diff options
| -rw-r--r-- | .gitmodules | 3 | ||||
| -rwxr-xr-x | autogen.sh | 4 | ||||
| -rw-r--r-- | ruby/Rakefile | 22 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/defs.c (renamed from ruby/ext/protobuf_c/defs.c) | 0 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/encode_decode.c (renamed from ruby/ext/protobuf_c/encode_decode.c) | 0 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/extconf.rb | 10 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/message.c (renamed from ruby/ext/protobuf_c/message.c) | 0 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/protobuf.c (renamed from ruby/ext/protobuf_c/protobuf.c) | 0 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/protobuf.h (renamed from ruby/ext/protobuf_c/protobuf.h) | 10 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/repeated_field.c (renamed from ruby/ext/protobuf_c/repeated_field.c) | 0 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/storage.c (renamed from ruby/ext/protobuf_c/storage.c) | 0 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/upb.c | 10078 | ||||
| -rw-r--r-- | ruby/ext/google/protobuf_c/upb.h | 7439 | ||||
| -rw-r--r-- | ruby/ext/protobuf_c/extconf.rb | 23 | ||||
| -rw-r--r-- | ruby/google-protobuf.gemspec | 22 | ||||
| -rw-r--r-- | ruby/lib/google/protobuf.rb (renamed from ruby/lib/protobuf.rb) | 2 | ||||
| -rw-r--r-- | ruby/tests/basic.rb | 2 | ||||
| -rw-r--r-- | ruby/tests/stress.rb | 2 | ||||
| -rw-r--r-- | src/google/protobuf/compiler/ruby/ruby_generator.cc | 2 | ||||
| m--------- | upb | 0 |
20 files changed, 17557 insertions, 62 deletions
diff --git a/.gitmodules b/.gitmodules deleted file mode 100644 index 5351ea07..00000000 --- a/.gitmodules +++ /dev/null @@ -1,3 +0,0 @@ -[submodule "upb"] - path = upb - url = https://github.com/haberman/upb @@ -39,9 +39,5 @@ sed -i -e 's/RuntimeLibrary="5"/RuntimeLibrary="3"/g; # TODO(kenton): Remove the ",no-obsolete" part and fix the resulting warnings. autoreconf -f -i -Wall,no-obsolete -# pull down git submodules. -git submodule init -git submodule update - rm -rf autom4te.cache config.h.in~ exit 0 diff --git a/ruby/Rakefile b/ruby/Rakefile index b782b403..ae7d8059 100644 --- a/ruby/Rakefile +++ b/ruby/Rakefile @@ -1,35 +1,19 @@ require "rake/extensiontask" require "rake/testtask" -spec = Gem::Specification.new do |s| - s.name = "protobuf" - s.version = "2.6.2" - s.licenses = ["BSD"] - s.summary = "Protocol Buffers" - s.description = "Protocol Buffers are Google's data interchange format." - s.authors = ["Protobuf Authors"] - s.email = "protobuf@googlegroups.com" - - s.files = ["lib/protobuf_c.so", "lib/protobuf.rb"] -end +spec = Gem::Specification.load("google-protobuf.gemspec") Rake::ExtensionTask.new("protobuf_c", spec) do |ext| - ext.lib_dir = "lib" - ext.config_script = "extconf.rb" + ext.ext_dir = "ext/google/protobuf_c" + ext.lib_dir = "lib/google" end Rake::TestTask.new(:test => :build) do |t| t.test_files = FileList["tests/*.rb"] end -task :chmod do - File.chmod(0755, "lib/protobuf_c.so") -end - Gem::PackageTask.new(spec) do |pkg| end -task :package => :chmod -task :gem => :chmod task :build => [:clean, :compile] task :default => [:build] diff --git a/ruby/ext/protobuf_c/defs.c b/ruby/ext/google/protobuf_c/defs.c index bb6f10e1..bb6f10e1 100644 --- a/ruby/ext/protobuf_c/defs.c +++ b/ruby/ext/google/protobuf_c/defs.c diff --git a/ruby/ext/protobuf_c/encode_decode.c b/ruby/ext/google/protobuf_c/encode_decode.c index 8aba3c9e..8aba3c9e 100644 --- a/ruby/ext/protobuf_c/encode_decode.c +++ b/ruby/ext/google/protobuf_c/encode_decode.c diff --git a/ruby/ext/google/protobuf_c/extconf.rb b/ruby/ext/google/protobuf_c/extconf.rb new file mode 100644 index 00000000..7cf7bf6a --- /dev/null +++ b/ruby/ext/google/protobuf_c/extconf.rb @@ -0,0 +1,10 @@ +#!/usr/bin/ruby + +require 'mkmf' + +$CFLAGS += " -O3 -std=c99 -Wno-unused-function -DNDEBUG " + +$objs = ["protobuf.o", "defs.o", "storage.o", "message.o", + "repeated_field.o", "encode_decode.o", "upb.o"] + +create_makefile("google/protobuf_c") diff --git a/ruby/ext/protobuf_c/message.c b/ruby/ext/google/protobuf_c/message.c index 105b7807..105b7807 100644 --- a/ruby/ext/protobuf_c/message.c +++ b/ruby/ext/google/protobuf_c/message.c diff --git a/ruby/ext/protobuf_c/protobuf.c b/ruby/ext/google/protobuf_c/protobuf.c index d5862284..d5862284 100644 --- a/ruby/ext/protobuf_c/protobuf.c +++ b/ruby/ext/google/protobuf_c/protobuf.c diff --git a/ruby/ext/protobuf_c/protobuf.h b/ruby/ext/google/protobuf_c/protobuf.h index a7f6f539..c3a5d653 100644 --- a/ruby/ext/protobuf_c/protobuf.h +++ b/ruby/ext/google/protobuf_c/protobuf.h @@ -35,15 +35,7 @@ #include <ruby/vm.h> #include <ruby/encoding.h> -#include "upb/def.h" -#include "upb/handlers.h" -#include "upb/pb/decoder.h" -#include "upb/pb/encoder.h" -#include "upb/pb/glue.h" -#include "upb/json/parser.h" -#include "upb/json/printer.h" -#include "upb/shim/shim.h" -#include "upb/symtab.h" +#include "upb.h" // Forward decls. struct DescriptorPool; diff --git a/ruby/ext/protobuf_c/repeated_field.c b/ruby/ext/google/protobuf_c/repeated_field.c index 6bd13b07..6bd13b07 100644 --- a/ruby/ext/protobuf_c/repeated_field.c +++ b/ruby/ext/google/protobuf_c/repeated_field.c diff --git a/ruby/ext/protobuf_c/storage.c b/ruby/ext/google/protobuf_c/storage.c index c4d801af..c4d801af 100644 --- a/ruby/ext/protobuf_c/storage.c +++ b/ruby/ext/google/protobuf_c/storage.c diff --git a/ruby/ext/google/protobuf_c/upb.c b/ruby/ext/google/protobuf_c/upb.c new file mode 100644 index 00000000..c9f47195 --- /dev/null +++ b/ruby/ext/google/protobuf_c/upb.c @@ -0,0 +1,10078 @@ +// Amalgamated source file +#include "upb.h" +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2008-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + */ + + +#include <stdlib.h> +#include <string.h> + +typedef struct { + size_t len; + char str[1]; // Null-terminated string data follows. +} str_t; + +static str_t *newstr(const char *data, size_t len) { + str_t *ret = malloc(sizeof(*ret) + len); + if (!ret) return NULL; + ret->len = len; + memcpy(ret->str, data, len); + ret->str[len] = '\0'; + return ret; +} + +static void freestr(str_t *s) { free(s); } + +// isalpha() etc. from <ctype.h> are locale-dependent, which we don't want. +static bool upb_isbetween(char c, char low, char high) { + return c >= low && c <= high; +} + +static bool upb_isletter(char c) { + return upb_isbetween(c, 'A', 'Z') || upb_isbetween(c, 'a', 'z') || c == '_'; +} + +static bool upb_isalphanum(char c) { + return upb_isletter(c) || upb_isbetween(c, '0', '9'); +} + +static bool upb_isident(const char *str, size_t len, bool full, upb_status *s) { + bool start = true; + for (size_t i = 0; i < len; i++) { + char c = str[i]; + if (c == '.') { + if (start || !full) { + upb_status_seterrf(s, "invalid name: unexpected '.' (%s)", str); + return false; + } + start = true; + } else if (start) { + if (!upb_isletter(c)) { + upb_status_seterrf( + s, "invalid name: path components must start with a letter (%s)", + str); + return false; + } + start = false; + } else { + if (!upb_isalphanum(c)) { + upb_status_seterrf(s, "invalid name: non-alphanumeric character (%s)", + str); + return false; + } + } + } + return !start; +} + + +/* upb_def ********************************************************************/ + +upb_deftype_t upb_def_type(const upb_def *d) { return d->type; } + +const char *upb_def_fullname(const upb_def *d) { return d->fullname; } + +bool upb_def_setfullname(upb_def *def, const char *fullname, upb_status *s) { + assert(!upb_def_isfrozen(def)); + if (!upb_isident(fullname, strlen(fullname), true, s)) return false; + free((void*)def->fullname); + def->fullname = upb_strdup(fullname); + return true; +} + +upb_def *upb_def_dup(const upb_def *def, const void *o) { + switch (def->type) { + case UPB_DEF_MSG: + return UPB_UPCAST(upb_msgdef_dup(upb_downcast_msgdef(def), o)); + case UPB_DEF_FIELD: + return UPB_UPCAST(upb_fielddef_dup(upb_downcast_fielddef(def), o)); + case UPB_DEF_ENUM: + return UPB_UPCAST(upb_enumdef_dup(upb_downcast_enumdef(def), o)); + default: assert(false); return NULL; + } +} + +bool upb_def_isfrozen(const upb_def *def) { + return upb_refcounted_isfrozen(UPB_UPCAST(def)); +} + +void upb_def_ref(const upb_def *def, const void *owner) { + upb_refcounted_ref(UPB_UPCAST(def), owner); +} + +void upb_def_unref(const upb_def *def, const void *owner) { + upb_refcounted_unref(UPB_UPCAST(def), owner); +} + +void upb_def_donateref(const upb_def *def, const void *from, const void *to) { + upb_refcounted_donateref(UPB_UPCAST(def), from, to); +} + +void upb_def_checkref(const upb_def *def, const void *owner) { + upb_refcounted_checkref(UPB_UPCAST(def), owner); +} + +static bool upb_def_init(upb_def *def, upb_deftype_t type, + const struct upb_refcounted_vtbl *vtbl, + const void *owner) { + if (!upb_refcounted_init(UPB_UPCAST(def), vtbl, owner)) return false; + def->type = type; + def->fullname = NULL; + def->came_from_user = false; + return true; +} + +static void upb_def_uninit(upb_def *def) { + free((void*)def->fullname); +} + +static const char *msgdef_name(const upb_msgdef *m) { + const char *name = upb_def_fullname(UPB_UPCAST(m)); + return name ? name : "(anonymous)"; +} + +static bool upb_validate_field(upb_fielddef *f, upb_status *s) { + if (upb_fielddef_name(f) == NULL || upb_fielddef_number(f) == 0) { + upb_status_seterrmsg(s, "fielddef must have name and number set"); + return false; + } + + if (!f->type_is_set_) { + upb_status_seterrmsg(s, "fielddef type was not initialized"); + return false; + } + + if (upb_fielddef_lazy(f) && + upb_fielddef_descriptortype(f) != UPB_DESCRIPTOR_TYPE_MESSAGE) { + upb_status_seterrmsg(s, + "only length-delimited submessage fields may be lazy"); + return false; + } + + if (upb_fielddef_hassubdef(f)) { + if (f->subdef_is_symbolic) { + upb_status_seterrf(s, "field '%s.%s' has not been resolved", + msgdef_name(f->msg.def), upb_fielddef_name(f)); + return false; + } + + const upb_def *subdef = upb_fielddef_subdef(f); + if (subdef == NULL) { + upb_status_seterrf(s, "field %s.%s is missing required subdef", + msgdef_name(f->msg.def), upb_fielddef_name(f)); + return false; + } + + if (!upb_def_isfrozen(subdef) && !subdef->came_from_user) { + upb_status_seterrf(s, + "subdef of field %s.%s is not frozen or being frozen", + msgdef_name(f->msg.def), upb_fielddef_name(f)); + return false; + } + } + + if (upb_fielddef_type(f) == UPB_TYPE_ENUM) { + bool has_default_name = upb_fielddef_enumhasdefaultstr(f); + bool has_default_number = upb_fielddef_enumhasdefaultint32(f); + + // Previously verified by upb_validate_enumdef(). + assert(upb_enumdef_numvals(upb_fielddef_enumsubdef(f)) > 0); + + // We've already validated that we have an associated enumdef and that it + // has at least one member, so at least one of these should be true. + // Because if the user didn't set anything, we'll pick up the enum's + // default, but if the user *did* set something we should at least pick up + // the one they set (int32 or string). + assert(has_default_name || has_default_number); + + if (!has_default_name) { + upb_status_seterrf(s, + "enum default for field %s.%s (%d) is not in the enum", + msgdef_name(f->msg.def), upb_fielddef_name(f), + upb_fielddef_defaultint32(f)); + return false; + } + + if (!has_default_number) { + upb_status_seterrf(s, + "enum default for field %s.%s (%s) is not in the enum", + msgdef_name(f->msg.def), upb_fielddef_name(f), + upb_fielddef_defaultstr(f, NULL)); + return false; + } + + // Lift the effective numeric default into the field's default slot, in case + // we were only getting it "by reference" from the enumdef. + upb_fielddef_setdefaultint32(f, upb_fielddef_defaultint32(f)); + } + + return true; +} + +static bool upb_validate_enumdef(const upb_enumdef *e, upb_status *s) { + if (upb_enumdef_numvals(e) == 0) { + upb_status_seterrf(s, "enum %s has no members (must have at least one)", + upb_enumdef_fullname(e)); + return false; + } + + return true; +} + +// All submessage fields are lower than all other fields. +// Secondly, fields are increasing in order. +uint32_t field_rank(const upb_fielddef *f) { + uint32_t ret = upb_fielddef_number(f); + const uint32_t high_bit = 1 << 30; + assert(ret < high_bit); + if (!upb_fielddef_issubmsg(f)) + ret |= high_bit; + return ret; +} + +int cmp_fields(const void *p1, const void *p2) { + const upb_fielddef *f1 = *(upb_fielddef*const*)p1; + const upb_fielddef *f2 = *(upb_fielddef*const*)p2; + return field_rank(f1) - field_rank(f2); +} + +static bool assign_msg_indices(upb_msgdef *m, upb_status *s) { + // Sort fields. upb internally relies on UPB_TYPE_MESSAGE fields having the + // lowest indexes, but we do not publicly guarantee this. + int n = upb_msgdef_numfields(m); + upb_fielddef **fields = malloc(n * sizeof(*fields)); + if (!fields) return false; + + upb_msg_iter j; + int i; + m->submsg_field_count = 0; + for(i = 0, upb_msg_begin(&j, m); !upb_msg_done(&j); upb_msg_next(&j), i++) { + upb_fielddef *f = upb_msg_iter_field(&j); + assert(f->msg.def == m); + if (!upb_validate_field(f, s)) { + free(fields); + return false; + } + if (upb_fielddef_issubmsg(f)) { + m->submsg_field_count++; + } + fields[i] = f; + } + + qsort(fields, n, sizeof(*fields), cmp_fields); + + uint32_t selector = UPB_STATIC_SELECTOR_COUNT + m->submsg_field_count; + for (i = 0; i < n; i++) { + upb_fielddef *f = fields[i]; + f->index_ = i; + f->selector_base = selector + upb_handlers_selectorbaseoffset(f); + selector += upb_handlers_selectorcount(f); + } + m->selector_count = selector; + +#ifndef NDEBUG + // Verify that all selectors for the message are distinct. + // +#define TRY(type) \ + if (upb_handlers_getselector(f, type, &sel)) upb_inttable_insert(&t, sel, v); + + upb_inttable t; + upb_inttable_init(&t, UPB_CTYPE_BOOL); + upb_value v = upb_value_bool(true); + upb_selector_t sel; + upb_inttable_insert(&t, UPB_STARTMSG_SELECTOR, v); + upb_inttable_insert(&t, UPB_ENDMSG_SELECTOR, v); + for(upb_msg_begin(&j, m); !upb_msg_done(&j); upb_msg_next(&j)) { + upb_fielddef *f = upb_msg_iter_field(&j); + // These calls will assert-fail in upb_table if the value already exists. + TRY(UPB_HANDLER_INT32); + TRY(UPB_HANDLER_INT64) + TRY(UPB_HANDLER_UINT32) + TRY(UPB_HANDLER_UINT64) + TRY(UPB_HANDLER_FLOAT) + TRY(UPB_HANDLER_DOUBLE) + TRY(UPB_HANDLER_BOOL) + TRY(UPB_HANDLER_STARTSTR) + TRY(UPB_HANDLER_STRING) + TRY(UPB_HANDLER_ENDSTR) + TRY(UPB_HANDLER_STARTSUBMSG) + TRY(UPB_HANDLER_ENDSUBMSG) + TRY(UPB_HANDLER_STARTSEQ) + TRY(UPB_HANDLER_ENDSEQ) + } + upb_inttable_uninit(&t); +#undef TRY +#endif + + free(fields); + return true; +} + +bool upb_def_freeze(upb_def *const* defs, int n, upb_status *s) { + upb_status_clear(s); + + // First perform validation, in two passes so we can check that we have a + // transitive closure without needing to search. + for (int i = 0; i < n; i++) { + upb_def *def = defs[i]; + if (upb_def_isfrozen(def)) { + // Could relax this requirement if it's annoying. + upb_status_seterrmsg(s, "def is already frozen"); + goto err; + } else if (def->type == UPB_DEF_FIELD) { + upb_status_seterrmsg(s, "standalone fielddefs can not be frozen"); + goto err; + } else if (def->type == UPB_DEF_ENUM) { + if (!upb_validate_enumdef(upb_dyncast_enumdef(def), s)) { + goto err; + } + } else { + // Set now to detect transitive closure in the second pass. + def->came_from_user = true; + } + } + + // Second pass of validation. Also assign selector bases and indexes, and + // compact tables. + for (int i = 0; i < n; i++) { + upb_msgdef *m = upb_dyncast_msgdef_mutable(defs[i]); + upb_enumdef *e = upb_dyncast_enumdef_mutable(defs[i]); + if (m) { + upb_inttable_compact(&m->itof); + if (!assign_msg_indices(m, s)) { + goto err; + } + } else if (e) { + upb_inttable_compact(&e->iton); + } + } + + // Def graph contains FieldDefs between each MessageDef, so double the limit. + int maxdepth = UPB_MAX_MESSAGE_DEPTH * 2; + + // Validation all passed; freeze the defs. + bool ret = + upb_refcounted_freeze((upb_refcounted * const *)defs, n, s, maxdepth); + assert(!(s && ret != upb_ok(s))); + return ret; + +err: + for (int i = 0; i < n; i++) { + defs[i]->came_from_user = false; + } + assert(!(s && upb_ok(s))); + return false; +} + + +/* upb_enumdef ****************************************************************/ + +static void upb_enumdef_free(upb_refcounted *r) { + upb_enumdef *e = (upb_enumdef*)r; + upb_inttable_iter i; + upb_inttable_begin(&i, &e->iton); + for( ; !upb_inttable_done(&i); upb_inttable_next(&i)) { + // To clean up the upb_strdup() from upb_enumdef_addval(). + free(upb_value_getcstr(upb_inttable_iter_value(&i))); + } + upb_strtable_uninit(&e->ntoi); + upb_inttable_uninit(&e->iton); + upb_def_uninit(UPB_UPCAST(e)); + free(e); +} + +upb_enumdef *upb_enumdef_new(const void *owner) { + static const struct upb_refcounted_vtbl vtbl = {NULL, &upb_enumdef_free}; + upb_enumdef *e = malloc(sizeof(*e)); + if (!e) return NULL; + if (!upb_def_init(UPB_UPCAST(e), UPB_DEF_ENUM, &vtbl, owner)) goto err2; + if (!upb_strtable_init(&e->ntoi, UPB_CTYPE_INT32)) goto err2; + if (!upb_inttable_init(&e->iton, UPB_CTYPE_CSTR)) goto err1; + return e; + +err1: + upb_strtable_uninit(&e->ntoi); +err2: + free(e); + return NULL; +} + +upb_enumdef *upb_enumdef_dup(const upb_enumdef *e, const void *owner) { + upb_enumdef *new_e = upb_enumdef_new(owner); + if (!new_e) return NULL; + upb_enum_iter i; + for(upb_enum_begin(&i, e); !upb_enum_done(&i); upb_enum_next(&i)) { + bool success = upb_enumdef_addval( + new_e, upb_enum_iter_name(&i),upb_enum_iter_number(&i), NULL); + if (!success) { + upb_enumdef_unref(new_e, owner); + return NULL; + } + } + return new_e; +} + +bool upb_enumdef_isfrozen(const upb_enumdef *e) { + return upb_def_isfrozen(UPB_UPCAST(e)); +} + +void upb_enumdef_ref(const upb_enumdef *e, const void *owner) { + upb_def_ref(UPB_UPCAST(e), owner); +} + +void upb_enumdef_unref(const upb_enumdef *e, const void *owner) { + upb_def_unref(UPB_UPCAST(e), owner); +} + +void upb_enumdef_donateref( + const upb_enumdef *e, const void *from, const void *to) { + upb_def_donateref(UPB_UPCAST(e), from, to); +} + +void upb_enumdef_checkref(const upb_enumdef *e, const void *owner) { + upb_def_checkref(UPB_UPCAST(e), owner); +} + +bool upb_enumdef_freeze(upb_enumdef *e, upb_status *status) { + upb_def *d = UPB_UPCAST(e); + return upb_def_freeze(&d, 1, status); +} + +const char *upb_enumdef_fullname(const upb_enumdef *e) { + return upb_def_fullname(UPB_UPCAST(e)); +} + +bool upb_enumdef_setfullname(upb_enumdef *e, const char *fullname, + upb_status *s) { + return upb_def_setfullname(UPB_UPCAST(e), fullname, s); +} + +bool upb_enumdef_addval(upb_enumdef *e, const char *name, int32_t num, + upb_status *status) { + if (!upb_isident(name, strlen(name), false, status)) { + return false; + } + if (upb_enumdef_ntoiz(e, name, NULL)) { + upb_status_seterrf(status, "name '%s' is already defined", name); + return false; + } + if (!upb_strtable_insert(&e->ntoi, name, upb_value_int32(num))) { + upb_status_seterrmsg(status, "out of memory"); + return false; + } + if (!upb_inttable_lookup(&e->iton, num, NULL) && + !upb_inttable_insert(&e->iton, num, upb_value_cstr(upb_strdup(name)))) { + upb_status_seterrmsg(status, "out of memory"); + upb_strtable_remove(&e->ntoi, name, NULL); + return false; + } + if (upb_enumdef_numvals(e) == 1) { + bool ok = upb_enumdef_setdefault(e, num, NULL); + UPB_ASSERT_VAR(ok, ok); + } + return true; +} + +int32_t upb_enumdef_default(const upb_enumdef *e) { + assert(upb_enumdef_iton(e, e->defaultval)); + return e->defaultval; +} + +bool upb_enumdef_setdefault(upb_enumdef *e, int32_t val, upb_status *s) { + assert(!upb_enumdef_isfrozen(e)); + if (!upb_enumdef_iton(e, val)) { + upb_status_seterrf(s, "number '%d' is not in the enum.", val); + return false; + } + e->defaultval = val; + return true; +} + +int upb_enumdef_numvals(const upb_enumdef *e) { + return upb_strtable_count(&e->ntoi); +} + +void upb_enum_begin(upb_enum_iter *i, const upb_enumdef *e) { + // We iterate over the ntoi table, to account for duplicate numbers. + upb_strtable_begin(i, &e->ntoi); +} + +void upb_enum_next(upb_enum_iter *iter) { upb_strtable_next(iter); } +bool upb_enum_done(upb_enum_iter *iter) { return upb_strtable_done(iter); } + +bool upb_enumdef_ntoi(const upb_enumdef *def, const char *name, + size_t len, int32_t *num) { + upb_value v; + if (!upb_strtable_lookup2(&def->ntoi, name, len, &v)) { + return false; + } + if (num) *num = upb_value_getint32(v); + return true; +} + +const char *upb_enumdef_iton(const upb_enumdef *def, int32_t num) { + upb_value v; + return upb_inttable_lookup32(&def->iton, num, &v) ? + upb_value_getcstr(v) : NULL; +} + +const char *upb_enum_iter_name(upb_enum_iter *iter) { + return upb_strtable_iter_key(iter); +} + +int32_t upb_enum_iter_number(upb_enum_iter *iter) { + return upb_value_getint32(upb_strtable_iter_value(iter)); +} + + +/* upb_fielddef ***************************************************************/ + +static void upb_fielddef_init_default(upb_fielddef *f); + +static void upb_fielddef_uninit_default(upb_fielddef *f) { + if (f->type_is_set_ && f->default_is_string && f->defaultval.bytes) + freestr(f->defaultval.bytes); +} + +static void visitfield(const upb_refcounted *r, upb_refcounted_visit *visit, + void *closure) { + const upb_fielddef *f = (const upb_fielddef*)r; + if (upb_fielddef_containingtype(f)) { + visit(r, UPB_UPCAST2(upb_fielddef_containingtype(f)), closure); + } + if (upb_fielddef_subdef(f)) { + visit(r, UPB_UPCAST(upb_fielddef_subdef(f)), closure); + } +} + +static void freefield(upb_refcounted *r) { + upb_fielddef *f = (upb_fielddef*)r; + upb_fielddef_uninit_default(f); + if (f->subdef_is_symbolic) + free(f->sub.name); + upb_def_uninit(UPB_UPCAST(f)); + free(f); +} + +static const char *enumdefaultstr(const upb_fielddef *f) { + assert(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM); + const upb_enumdef *e = upb_fielddef_enumsubdef(f); + if (f->default_is_string && f->defaultval.bytes) { + // Default was explicitly set as a string. + str_t *s = f->defaultval.bytes; + return s->str; + } else if (e) { + if (!f->default_is_string) { + // Default was explicitly set as an integer; look it up in enumdef. + const char *name = upb_enumdef_iton(e, f->defaultval.sint); + if (name) { + return name; + } + } else { + // Default is completely unset; pull enumdef default. + if (upb_enumdef_numvals(e) > 0) { + const char *name = upb_enumdef_iton(e, upb_enumdef_default(e)); + assert(name); + return name; + } + } + } + return NULL; +} + +static bool enumdefaultint32(const upb_fielddef *f, int32_t *val) { + assert(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM); + const upb_enumdef *e = upb_fielddef_enumsubdef(f); + if (!f->default_is_string) { + // Default was explicitly set as an integer. + *val = f->defaultval.sint; + return true; + } else if (e) { + if (f->defaultval.bytes) { + // Default was explicitly set as a str; try to lookup corresponding int. + str_t *s = f->defaultval.bytes; + if (upb_enumdef_ntoiz(e, s->str, val)) { + return true; + } + } else { + // Default is unset; try to pull in enumdef default. + if (upb_enumdef_numvals(e) > 0) { + *val = upb_enumdef_default(e); + return true; + } + } + } + return false; +} + +upb_fielddef *upb_fielddef_new(const void *owner) { + static const struct upb_refcounted_vtbl vtbl = {visitfield, freefield}; + upb_fielddef *f = malloc(sizeof(*f)); + if (!f) return NULL; + if (!upb_def_init(UPB_UPCAST(f), UPB_DEF_FIELD, &vtbl, owner)) { + free(f); + return NULL; + } + f->msg.def = NULL; + f->sub.def = NULL; + f->subdef_is_symbolic = false; + f->msg_is_symbolic = false; + f->label_ = UPB_LABEL_OPTIONAL; + f->type_ = UPB_TYPE_INT32; + f->number_ = 0; + f->type_is_set_ = false; + f->tagdelim = false; + f->is_extension_ = false; + f->lazy_ = false; + f->packed_ = true; + + // For the moment we default this to UPB_INTFMT_VARIABLE, since it will work + // with all integer types and is in some since more "default" since the most + // normal-looking proto2 types int32/int64/uint32/uint64 use variable. + // + // Other options to consider: + // - there is no default; users must set this manually (like type). + // - default signed integers to UPB_INTFMT_ZIGZAG, since it's more likely to + // be an optimal default for signed integers. + f->intfmt = UPB_INTFMT_VARIABLE; + return f; +} + +upb_fielddef *upb_fielddef_dup(const upb_fielddef *f, const void *owner) { + upb_fielddef *newf = upb_fielddef_new(owner); + if (!newf) return NULL; + upb_fielddef_settype(newf, upb_fielddef_type(f)); + upb_fielddef_setlabel(newf, upb_fielddef_label(f)); + upb_fielddef_setnumber(newf, upb_fielddef_number(f), NULL); + upb_fielddef_setname(newf, upb_fielddef_name(f), NULL); + if (f->default_is_string && f->defaultval.bytes) { + str_t *s = f->defaultval.bytes; + upb_fielddef_setdefaultstr(newf, s->str, s->len, NULL); + } else { + newf->default_is_string = f->default_is_string; + newf->defaultval = f->defaultval; + } + + const char *srcname; + if (f->subdef_is_symbolic) { + srcname = f->sub.name; // Might be NULL. + } else { + srcname = f->sub.def ? upb_def_fullname(f->sub.def) : NULL; + } + if (srcname) { + char *newname = malloc(strlen(f->sub.def->fullname) + 2); + if (!newname) { + upb_fielddef_unref(newf, owner); + return NULL; + } + strcpy(newname, "."); + strcat(newname, f->sub.def->fullname); + upb_fielddef_setsubdefname(newf, newname, NULL); + free(newname); + } + + return newf; +} + +bool upb_fielddef_isfrozen(const upb_fielddef *f) { + return upb_def_isfrozen(UPB_UPCAST(f)); +} + +void upb_fielddef_ref(const upb_fielddef *f, const void *owner) { + upb_def_ref(UPB_UPCAST(f), owner); +} + +void upb_fielddef_unref(const upb_fielddef *f, const void *owner) { + upb_def_unref(UPB_UPCAST(f), owner); +} + +void upb_fielddef_donateref( + const upb_fielddef *f, const void *from, const void *to) { + upb_def_donateref(UPB_UPCAST(f), from, to); +} + +void upb_fielddef_checkref(const upb_fielddef *f, const void *owner) { + upb_def_checkref(UPB_UPCAST(f), owner); +} + +bool upb_fielddef_typeisset(const upb_fielddef *f) { + return f->type_is_set_; +} + +upb_fieldtype_t upb_fielddef_type(const upb_fielddef *f) { + assert(f->type_is_set_); + return f->type_; +} + +uint32_t upb_fielddef_index(const upb_fielddef *f) { + return f->index_; +} + +upb_label_t upb_fielddef_label(const upb_fielddef *f) { + return f->label_; +} + +upb_intfmt_t upb_fielddef_intfmt(const upb_fielddef *f) { + return f->intfmt; +} + +bool upb_fielddef_istagdelim(const upb_fielddef *f) { + return f->tagdelim; +} + +uint32_t upb_fielddef_number(const upb_fielddef *f) { + return f->number_; +} + +bool upb_fielddef_isextension(const upb_fielddef *f) { + return f->is_extension_; +} + +bool upb_fielddef_lazy(const upb_fielddef *f) { + return f->lazy_; +} + +bool upb_fielddef_packed(const upb_fielddef *f) { + return f->packed_; +} + +const char *upb_fielddef_name(const upb_fielddef *f) { + return upb_def_fullname(UPB_UPCAST(f)); +} + +const upb_msgdef *upb_fielddef_containingtype(const upb_fielddef *f) { + return f->msg_is_symbolic ? NULL : f->msg.def; +} + +upb_msgdef *upb_fielddef_containingtype_mutable(upb_fielddef *f) { + return (upb_msgdef*)upb_fielddef_containingtype(f); +} + +const char *upb_fielddef_containingtypename(upb_fielddef *f) { + return f->msg_is_symbolic ? f->msg.name : NULL; +} + +static void release_containingtype(upb_fielddef *f) { + if (f->msg_is_symbolic) free(f->msg.name); +} + +bool upb_fielddef_setcontainingtypename(upb_fielddef *f, const char *name, + upb_status *s) { + assert(!upb_fielddef_isfrozen(f)); + if (upb_fielddef_containingtype(f)) { + upb_status_seterrmsg(s, "field has already been added to a message."); + return false; + } + // TODO: validate name (upb_isident() doesn't quite work atm because this name + // may have a leading "."). + release_containingtype(f); + f->msg.name = upb_strdup(name); + f->msg_is_symbolic = true; + return true; +} + +bool upb_fielddef_setname(upb_fielddef *f, const char *name, upb_status *s) { + return upb_def_setfullname(UPB_UPCAST(f), name, s); +} + +static void chkdefaulttype(const upb_fielddef *f, upb_fieldtype_t type) { + UPB_UNUSED(f); + UPB_UNUSED(type); + assert(f->type_is_set_ && upb_fielddef_type(f) == type); +} + +int64_t upb_fielddef_defaultint64(const upb_fielddef *f) { + chkdefaulttype(f, UPB_TYPE_INT64); + return f->defaultval.sint; +} + +int32_t upb_fielddef_defaultint32(const upb_fielddef *f) { + if (f->type_is_set_ && upb_fielddef_type(f) == UPB_TYPE_ENUM) { + int32_t val; + bool ok = enumdefaultint32(f, &val); + UPB_ASSERT_VAR(ok, ok); + return val; + } else { + chkdefaulttype(f, UPB_TYPE_INT32); + return f->defaultval.sint; + } +} + +uint64_t upb_fielddef_defaultuint64(const upb_fielddef *f) { + chkdefaulttype(f, UPB_TYPE_UINT64); + return f->defaultval.uint; +} + +uint32_t upb_fielddef_defaultuint32(const upb_fielddef *f) { + chkdefaulttype(f, UPB_TYPE_UINT32); + return f->defaultval.uint; +} + +bool upb_fielddef_defaultbool(const upb_fielddef *f) { + chkdefaulttype(f, UPB_TYPE_BOOL); + return f->defaultval.uint; +} + +float upb_fielddef_defaultfloat(const upb_fielddef *f) { + chkdefaulttype(f, UPB_TYPE_FLOAT); + return f->defaultval.flt; +} + +double upb_fielddef_defaultdouble(const upb_fielddef *f) { + chkdefaulttype(f, UPB_TYPE_DOUBLE); + return f->defaultval.dbl; +} + +const char *upb_fielddef_defaultstr(const upb_fielddef *f, size_t *len) { + assert(f->type_is_set_); + assert(upb_fielddef_type(f) == UPB_TYPE_STRING || + upb_fielddef_type(f) == UPB_TYPE_BYTES || + upb_fielddef_type(f) == UPB_TYPE_ENUM); + + if (upb_fielddef_type(f) == UPB_TYPE_ENUM) { + const char *ret = enumdefaultstr(f); + assert(ret); + // Enum defaults can't have embedded NULLs. + if (len) *len = strlen(ret); + return ret; + } + + if (f->default_is_string) { + str_t *str = f->defaultval.bytes; + if (len) *len = str->len; + return str->str; + } + + return NULL; +} + +static void upb_fielddef_init_default(upb_fielddef *f) { + f->default_is_string = false; + switch (upb_fielddef_type(f)) { + case UPB_TYPE_DOUBLE: f->defaultval.dbl = 0; break; + case UPB_TYPE_FLOAT: f->defaultval.flt = 0; break; + case UPB_TYPE_INT32: + case UPB_TYPE_INT64: f->defaultval.sint = 0; break; + case UPB_TYPE_UINT64: + case UPB_TYPE_UINT32: + case UPB_TYPE_BOOL: f->defaultval.uint = 0; break; + case UPB_TYPE_STRING: + case UPB_TYPE_BYTES: + f->defaultval.bytes = newstr("", 0); + f->default_is_string = true; + break; + case UPB_TYPE_MESSAGE: break; + case UPB_TYPE_ENUM: + // This is our special sentinel that indicates "not set" for an enum. + f->default_is_string = true; + f->defaultval.bytes = NULL; + break; + } +} + +const upb_def *upb_fielddef_subdef(const upb_fielddef *f) { + return f->subdef_is_symbolic ? NULL : f->sub.def; +} + +const upb_msgdef *upb_fielddef_msgsubdef(const upb_fielddef *f) { + const upb_def *def = upb_fielddef_subdef(f); + return def ? upb_dyncast_msgdef(def) : NULL; +} + +const upb_enumdef *upb_fielddef_enumsubdef(const upb_fielddef *f) { + const upb_def *def = upb_fielddef_subdef(f); + return def ? upb_dyncast_enumdef(def) : NULL; +} + +upb_def *upb_fielddef_subdef_mutable(upb_fielddef *f) { + return (upb_def*)upb_fielddef_subdef(f); +} + +const char *upb_fielddef_subdefname(const upb_fielddef *f) { + if (f->subdef_is_symbolic) { + return f->sub.name; + } else if (f->sub.def) { + return upb_def_fullname(f->sub.def); + } else { + return NULL; + } +} + +bool upb_fielddef_setnumber(upb_fielddef *f, uint32_t number, upb_status *s) { + if (upb_fielddef_containingtype(f)) { + upb_status_seterrmsg( + s, "cannot change field number after adding to a message"); + return false; + } + if (number == 0 || number > UPB_MAX_FIELDNUMBER) { + upb_status_seterrf(s, "invalid field number (%u)", number); + return false; + } + f->number_ = number; + return true; +} + +void upb_fielddef_settype(upb_fielddef *f, upb_fieldtype_t type) { + assert(!upb_fielddef_isfrozen(f)); + assert(upb_fielddef_checktype(type)); + upb_fielddef_uninit_default(f); + f->type_ = type; + f->type_is_set_ = true; + upb_fielddef_init_default(f); +} + +void upb_fielddef_setdescriptortype(upb_fielddef *f, int type) { + assert(!upb_fielddef_isfrozen(f)); + switch (type) { + case UPB_DESCRIPTOR_TYPE_DOUBLE: + upb_fielddef_settype(f, UPB_TYPE_DOUBLE); + break; + case UPB_DESCRIPTOR_TYPE_FLOAT: + upb_fielddef_settype(f, UPB_TYPE_FLOAT); + break; + case UPB_DESCRIPTOR_TYPE_INT64: + case UPB_DESCRIPTOR_TYPE_SFIXED64: + case UPB_DESCRIPTOR_TYPE_SINT64: + upb_fielddef_settype(f, UPB_TYPE_INT64); + break; + case UPB_DESCRIPTOR_TYPE_UINT64: + case UPB_DESCRIPTOR_TYPE_FIXED64: + upb_fielddef_settype(f, UPB_TYPE_UINT64); + break; + case UPB_DESCRIPTOR_TYPE_INT32: + case UPB_DESCRIPTOR_TYPE_SFIXED32: + case UPB_DESCRIPTOR_TYPE_SINT32: + upb_fielddef_settype(f, UPB_TYPE_INT32); + break; + case UPB_DESCRIPTOR_TYPE_UINT32: + case UPB_DESCRIPTOR_TYPE_FIXED32: + upb_fielddef_settype(f, UPB_TYPE_UINT32); + break; + case UPB_DESCRIPTOR_TYPE_BOOL: + upb_fielddef_settype(f, UPB_TYPE_BOOL); + break; + case UPB_DESCRIPTOR_TYPE_STRING: + upb_fielddef_settype(f, UPB_TYPE_STRING); + break; + case UPB_DESCRIPTOR_TYPE_BYTES: + upb_fielddef_settype(f, UPB_TYPE_BYTES); + break; + case UPB_DESCRIPTOR_TYPE_GROUP: + case UPB_DESCRIPTOR_TYPE_MESSAGE: + upb_fielddef_settype(f, UPB_TYPE_MESSAGE); + break; + case UPB_DESCRIPTOR_TYPE_ENUM: + upb_fielddef_settype(f, UPB_TYPE_ENUM); + break; + default: assert(false); + } + + if (type == UPB_DESCRIPTOR_TYPE_FIXED64 || + type == UPB_DESCRIPTOR_TYPE_FIXED32 || + type == UPB_DESCRIPTOR_TYPE_SFIXED64 || + type == UPB_DESCRIPTOR_TYPE_SFIXED32) { + upb_fielddef_setintfmt(f, UPB_INTFMT_FIXED); + } else if (type == UPB_DESCRIPTOR_TYPE_SINT64 || + type == UPB_DESCRIPTOR_TYPE_SINT32) { + upb_fielddef_setintfmt(f, UPB_INTFMT_ZIGZAG); + } else { + upb_fielddef_setintfmt(f, UPB_INTFMT_VARIABLE); + } + + upb_fielddef_settagdelim(f, type == UPB_DESCRIPTOR_TYPE_GROUP); +} + +upb_descriptortype_t upb_fielddef_descriptortype(const upb_fielddef *f) { + switch (upb_fielddef_type(f)) { + case UPB_TYPE_FLOAT: return UPB_DESCRIPTOR_TYPE_FLOAT; + case UPB_TYPE_DOUBLE: return UPB_DESCRIPTOR_TYPE_DOUBLE; + case UPB_TYPE_BOOL: return UPB_DESCRIPTOR_TYPE_BOOL; + case UPB_TYPE_STRING: return UPB_DESCRIPTOR_TYPE_STRING; + case UPB_TYPE_BYTES: return UPB_DESCRIPTOR_TYPE_BYTES; + case UPB_TYPE_ENUM: return UPB_DESCRIPTOR_TYPE_ENUM; + case UPB_TYPE_INT32: + switch (upb_fielddef_intfmt(f)) { + case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_INT32; + case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_SFIXED32; + case UPB_INTFMT_ZIGZAG: return UPB_DESCRIPTOR_TYPE_SINT32; + } + case UPB_TYPE_INT64: + switch (upb_fielddef_intfmt(f)) { + case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_INT64; + case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_SFIXED64; + case UPB_INTFMT_ZIGZAG: return UPB_DESCRIPTOR_TYPE_SINT64; + } + case UPB_TYPE_UINT32: + switch (upb_fielddef_intfmt(f)) { + case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_UINT32; + case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_FIXED32; + case UPB_INTFMT_ZIGZAG: return -1; + } + case UPB_TYPE_UINT64: + switch (upb_fielddef_intfmt(f)) { + case UPB_INTFMT_VARIABLE: return UPB_DESCRIPTOR_TYPE_UINT64; + case UPB_INTFMT_FIXED: return UPB_DESCRIPTOR_TYPE_FIXED64; + case UPB_INTFMT_ZIGZAG: return -1; + } + case UPB_TYPE_MESSAGE: + return upb_fielddef_istagdelim(f) ? + UPB_DESCRIPTOR_TYPE_GROUP : UPB_DESCRIPTOR_TYPE_MESSAGE; + } + return 0; +} + +void upb_fielddef_setisextension(upb_fielddef *f, bool is_extension) { + assert(!upb_fielddef_isfrozen(f)); + f->is_extension_ = is_extension; +} + +void upb_fielddef_setlazy(upb_fielddef *f, bool lazy) { + assert(!upb_fielddef_isfrozen(f)); + f->lazy_ = lazy; +} + +void upb_fielddef_setpacked(upb_fielddef *f, bool packed) { + assert(!upb_fielddef_isfrozen(f)); + f->packed_ = packed; +} + +void upb_fielddef_setlabel(upb_fielddef *f, upb_label_t label) { + assert(!upb_fielddef_isfrozen(f)); + assert(upb_fielddef_checklabel(label)); + f->label_ = label; +} + +void upb_fielddef_setintfmt(upb_fielddef *f, upb_intfmt_t fmt) { + assert(!upb_fielddef_isfrozen(f)); + assert(upb_fielddef_checkintfmt(fmt)); + f->intfmt = fmt; +} + +void upb_fielddef_settagdelim(upb_fielddef *f, bool tag_delim) { + assert(!upb_fielddef_isfrozen(f)); + f->tagdelim = tag_delim; + f->tagdelim = tag_delim; +} + +static bool checksetdefault(upb_fielddef *f, upb_fieldtype_t type) { + if (!f->type_is_set_ || upb_fielddef_isfrozen(f) || + upb_fielddef_type(f) != type) { + assert(false); + return false; + } + if (f->default_is_string) { + str_t *s = f->defaultval.bytes; + assert(s || type == UPB_TYPE_ENUM); + if (s) freestr(s); + } + f->default_is_string = false; + return true; +} + +void upb_fielddef_setdefaultint64(upb_fielddef *f, int64_t value) { + if (checksetdefault(f, UPB_TYPE_INT64)) + f->defaultval.sint = value; +} + +void upb_fielddef_setdefaultint32(upb_fielddef *f, int32_t value) { + if ((upb_fielddef_type(f) == UPB_TYPE_ENUM && + checksetdefault(f, UPB_TYPE_ENUM)) || + checksetdefault(f, UPB_TYPE_INT32)) { + f->defaultval.sint = value; + } +} + +void upb_fielddef_setdefaultuint64(upb_fielddef *f, uint64_t value) { + if (checksetdefault(f, UPB_TYPE_UINT64)) + f->defaultval.uint = value; +} + +void upb_fielddef_setdefaultuint32(upb_fielddef *f, uint32_t value) { + if (checksetdefault(f, UPB_TYPE_UINT32)) + f->defaultval.uint = value; +} + +void upb_fielddef_setdefaultbool(upb_fielddef *f, bool value) { + if (checksetdefault(f, UPB_TYPE_BOOL)) + f->defaultval.uint = value; +} + +void upb_fielddef_setdefaultfloat(upb_fielddef *f, float value) { + if (checksetdefault(f, UPB_TYPE_FLOAT)) + f->defaultval.flt = value; +} + +void upb_fielddef_setdefaultdouble(upb_fielddef *f, double value) { + if (checksetdefault(f, UPB_TYPE_DOUBLE)) + f->defaultval.dbl = value; +} + +bool upb_fielddef_setdefaultstr(upb_fielddef *f, const void *str, size_t len, + upb_status *s) { + assert(upb_fielddef_isstring(f) || f->type_ == UPB_TYPE_ENUM); + if (f->type_ == UPB_TYPE_ENUM && !upb_isident(str, len, false, s)) + return false; + + if (f->default_is_string) { + str_t *s = f->defaultval.bytes; + assert(s || f->type_ == UPB_TYPE_ENUM); + if (s) freestr(s); + } else { + assert(f->type_ == UPB_TYPE_ENUM); + } + + str_t *str2 = newstr(str, len); + f->defaultval.bytes = str2; + f->default_is_string = true; + return true; +} + +void upb_fielddef_setdefaultcstr(upb_fielddef *f, const char *str, + upb_status *s) { + assert(f->type_is_set_); + upb_fielddef_setdefaultstr(f, str, str ? strlen(str) : 0, s); +} + +bool upb_fielddef_enumhasdefaultint32(const upb_fielddef *f) { + assert(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM); + int32_t val; + return enumdefaultint32(f, &val); +} + +bool upb_fielddef_enumhasdefaultstr(const upb_fielddef *f) { + assert(f->type_is_set_ && f->type_ == UPB_TYPE_ENUM); + return enumdefaultstr(f) != NULL; +} + +static bool upb_subdef_typecheck(upb_fielddef *f, const upb_def *subdef, + upb_status *s) { + if (f->type_ == UPB_TYPE_MESSAGE) { + if (upb_dyncast_msgdef(subdef)) return true; + upb_status_seterrmsg(s, "invalid subdef type for this submessage field"); + return false; + } else if (f->type_ == UPB_TYPE_ENUM) { + if (upb_dyncast_enumdef(subdef)) return true; + upb_status_seterrmsg(s, "invalid subdef type for this enum field"); + return false; + } else { + upb_status_seterrmsg(s, "only message and enum fields can have a subdef"); + return false; + } +} + +static void release_subdef(upb_fielddef *f) { + if (f->subdef_is_symbolic) { + free(f->sub.name); + } else if (f->sub.def) { + upb_unref2(f->sub.def, f); + } +} + +bool upb_fielddef_setsubdef(upb_fielddef *f, const upb_def *subdef, + upb_status *s) { + assert(!upb_fielddef_isfrozen(f)); + assert(upb_fielddef_hassubdef(f)); + if (subdef && !upb_subdef_typecheck(f, subdef, s)) return false; + release_subdef(f); + f->sub.def = subdef; + f->subdef_is_symbolic = false; + if (f->sub.def) upb_ref2(f->sub.def, f); + return true; +} + +bool upb_fielddef_setmsgsubdef(upb_fielddef *f, const upb_msgdef *subdef, + upb_status *s) { + return upb_fielddef_setsubdef(f, UPB_UPCAST(subdef), s); +} + +bool upb_fielddef_setenumsubdef(upb_fielddef *f, const upb_enumdef *subdef, + upb_status *s) { + return upb_fielddef_setsubdef(f, UPB_UPCAST(subdef), s); +} + +bool upb_fielddef_setsubdefname(upb_fielddef *f, const char *name, + upb_status *s) { + assert(!upb_fielddef_isfrozen(f)); + if (!upb_fielddef_hassubdef(f)) { + upb_status_seterrmsg(s, "field type does not accept a subdef"); + return false; + } + // TODO: validate name (upb_isident() doesn't quite work atm because this name + // may have a leading "."). + release_subdef(f); + f->sub.name = upb_strdup(name); + f->subdef_is_symbolic = true; + return true; +} + +bool upb_fielddef_issubmsg(const upb_fielddef *f) { + return upb_fielddef_type(f) == UPB_TYPE_MESSAGE; +} + +bool upb_fielddef_isstring(const upb_fielddef *f) { + return upb_fielddef_type(f) == UPB_TYPE_STRING || + upb_fielddef_type(f) == UPB_TYPE_BYTES; +} + +bool upb_fielddef_isseq(const upb_fielddef *f) { + return upb_fielddef_label(f) == UPB_LABEL_REPEATED; +} + +bool upb_fielddef_isprimitive(const upb_fielddef *f) { + return !upb_fielddef_isstring(f) && !upb_fielddef_issubmsg(f); +} + +bool upb_fielddef_hassubdef(const upb_fielddef *f) { + return upb_fielddef_issubmsg(f) || upb_fielddef_type(f) == UPB_TYPE_ENUM; +} + +static bool between(int32_t x, int32_t low, int32_t high) { + return x >= low && x <= high; +} + +bool upb_fielddef_checklabel(int32_t label) { return between(label, 1, 3); } +bool upb_fielddef_checktype(int32_t type) { return between(type, 1, 11); } +bool upb_fielddef_checkintfmt(int32_t fmt) { return between(fmt, 1, 3); } + +bool upb_fielddef_checkdescriptortype(int32_t type) { + return between(type, 1, 18); +} + +/* upb_msgdef *****************************************************************/ + +static void visitmsg(const upb_refcounted *r, upb_refcounted_visit *visit, + void *closure) { + const upb_msgdef *m = (const upb_msgdef*)r; + upb_msg_iter i; + for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) { + upb_fielddef *f = upb_msg_iter_field(&i); + visit(r, UPB_UPCAST2(f), closure); + } +} + +static void freemsg(upb_refcounted *r) { + upb_msgdef *m = (upb_msgdef*)r; + upb_strtable_uninit(&m->ntof); + upb_inttable_uninit(&m->itof); + upb_def_uninit(UPB_UPCAST(m)); + free(m); +} + +upb_msgdef *upb_msgdef_new(const void *owner) { + static const struct upb_refcounted_vtbl vtbl = {visitmsg, freemsg}; + upb_msgdef *m = malloc(sizeof(*m)); + if (!m) return NULL; + if (!upb_def_init(UPB_UPCAST(m), UPB_DEF_MSG, &vtbl, owner)) goto err2; + if (!upb_inttable_init(&m->itof, UPB_CTYPE_PTR)) goto err2; + if (!upb_strtable_init(&m->ntof, UPB_CTYPE_PTR)) goto err1; + return m; + +err1: + upb_inttable_uninit(&m->itof); +err2: + free(m); + return NULL; +} + +upb_msgdef *upb_msgdef_dup(const upb_msgdef *m, const void *owner) { + upb_msgdef *newm = upb_msgdef_new(owner); + if (!newm) return NULL; + bool ok = upb_def_setfullname(UPB_UPCAST(newm), + upb_def_fullname(UPB_UPCAST(m)), NULL); + UPB_ASSERT_VAR(ok, ok); + upb_msg_iter i; + for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) { + upb_fielddef *f = upb_fielddef_dup(upb_msg_iter_field(&i), &f); + if (!f || !upb_msgdef_addfield(newm, f, &f, NULL)) { + upb_msgdef_unref(newm, owner); + return NULL; + } + } + return newm; +} + +bool upb_msgdef_isfrozen(const upb_msgdef *m) { + return upb_def_isfrozen(UPB_UPCAST(m)); +} + +void upb_msgdef_ref(const upb_msgdef *m, const void *owner) { + upb_def_ref(UPB_UPCAST(m), owner); +} + +void upb_msgdef_unref(const upb_msgdef *m, const void *owner) { + upb_def_unref(UPB_UPCAST(m), owner); +} + +void upb_msgdef_donateref( + const upb_msgdef *m, const void *from, const void *to) { + upb_def_donateref(UPB_UPCAST(m), from, to); +} + +void upb_msgdef_checkref(const upb_msgdef *m, const void *owner) { + upb_def_checkref(UPB_UPCAST(m), owner); +} + +bool upb_msgdef_freeze(upb_msgdef *m, upb_status *status) { + upb_def *d = UPB_UPCAST(m); + return upb_def_freeze(&d, 1, status); +} + +const char *upb_msgdef_fullname(const upb_msgdef *m) { + return upb_def_fullname(UPB_UPCAST(m)); +} + +bool upb_msgdef_setfullname(upb_msgdef *m, const char *fullname, + upb_status *s) { + return upb_def_setfullname(UPB_UPCAST(m), fullname, s); +} + +bool upb_msgdef_addfield(upb_msgdef *m, upb_fielddef *f, const void *ref_donor, + upb_status *s) { + // TODO: extensions need to have a separate namespace, because proto2 allows a + // top-level extension (ie. one not in any package) to have the same name as a + // field from the message. + // + // This also implies that there needs to be a separate lookup-by-name method + // for extensions. It seems desirable for iteration to return both extensions + // and non-extensions though. + // + // We also need to validate that the field number is in an extension range iff + // it is an extension. + + // Check constraints for all fields before performing any action. + if (upb_fielddef_containingtype(f) != NULL) { + upb_status_seterrmsg(s, "fielddef already belongs to a message"); + return false; + } else if (upb_fielddef_name(f) == NULL || upb_fielddef_number(f) == 0) { + upb_status_seterrmsg(s, "field name or number were not set"); + return false; + } else if(upb_msgdef_itof(m, upb_fielddef_number(f)) || + upb_msgdef_ntofz(m, upb_fielddef_name(f))) { + upb_status_seterrmsg(s, "duplicate field name or number"); + return false; + } + + // Constraint checks ok, perform the action. + release_containingtype(f); + f->msg.def = m; + f->msg_is_symbolic = false; + upb_inttable_insert(&m->itof, upb_fielddef_number(f), upb_value_ptr(f)); + upb_strtable_insert(&m->ntof, upb_fielddef_name(f), upb_value_ptr(f)); + upb_ref2(f, m); + upb_ref2(m, f); + if (ref_donor) upb_fielddef_unref(f, ref_donor); + + return true; +} + +const upb_fielddef *upb_msgdef_itof(const upb_msgdef *m, uint32_t i) { + upb_value val; + return upb_inttable_lookup32(&m->itof, i, &val) ? + upb_value_getptr(val) : NULL; +} + +const upb_fielddef *upb_msgdef_ntof(const upb_msgdef *m, const char *name, + size_t len) { + upb_value val; + return upb_strtable_lookup2(&m->ntof, name, len, &val) ? + upb_value_getptr(val) : NULL; +} + +int upb_msgdef_numfields(const upb_msgdef *m) { + return upb_strtable_count(&m->ntof); +} + +void upb_msg_begin(upb_msg_iter *iter, const upb_msgdef *m) { + upb_inttable_begin(iter, &m->itof); +} + +void upb_msg_next(upb_msg_iter *iter) { upb_inttable_next(iter); } + +bool upb_msg_done(const upb_msg_iter *iter) { return upb_inttable_done(iter); } + +upb_fielddef *upb_msg_iter_field(const upb_msg_iter *iter) { + return (upb_fielddef*)upb_value_getptr(upb_inttable_iter_value(iter)); +} + +void upb_msg_iter_setdone(upb_msg_iter *iter) { + upb_inttable_iter_setdone(iter); +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2011-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * TODO(haberman): it's unclear whether a lot of the consistency checks should + * assert() or return false. + */ + + +#include <stdlib.h> +#include <string.h> + + +// Defined for the sole purpose of having a unique pointer value for +// UPB_NO_CLOSURE. +char _upb_noclosure; + +static void freehandlers(upb_refcounted *r) { + upb_handlers *h = (upb_handlers*)r; + + upb_inttable_iter i; + upb_inttable_begin(&i, &h->cleanup_); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + void *val = (void*)upb_inttable_iter_key(&i); + upb_value func_val = upb_inttable_iter_value(&i); + upb_handlerfree *func = upb_value_getfptr(func_val); + func(val); + } + + upb_inttable_uninit(&h->cleanup_); + upb_msgdef_unref(h->msg, h); + free(h->sub); + free(h); +} + +static void visithandlers(const upb_refcounted *r, upb_refcounted_visit *visit, + void *closure) { + const upb_handlers *h = (const upb_handlers*)r; + upb_msg_iter i; + for(upb_msg_begin(&i, h->msg); !upb_msg_done(&i); upb_msg_next(&i)) { + upb_fielddef *f = upb_msg_iter_field(&i); + if (!upb_fielddef_issubmsg(f)) continue; + const upb_handlers *sub = upb_handlers_getsubhandlers(h, f); + if (sub) visit(r, UPB_UPCAST(sub), closure); + } +} + +static const struct upb_refcounted_vtbl vtbl = {visithandlers, freehandlers}; + +typedef struct { + upb_inttable tab; // maps upb_msgdef* -> upb_handlers*. + upb_handlers_callback *callback; + const void *closure; +} dfs_state; + +// TODO(haberman): discard upb_handlers* objects that do not actually have any +// handlers set and cannot reach any upb_handlers* object that does. This is +// slightly tricky to do correctly. +static upb_handlers *newformsg(const upb_msgdef *m, const void *owner, + dfs_state *s) { + upb_handlers *h = upb_handlers_new(m, owner); + if (!h) return NULL; + if (!upb_inttable_insertptr(&s->tab, m, upb_value_ptr(h))) goto oom; + + s->callback(s->closure, h); + + // For each submessage field, get or create a handlers object and set it as + // the subhandlers. + upb_msg_iter i; + for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) { + upb_fielddef *f = upb_msg_iter_field(&i); + if (!upb_fielddef_issubmsg(f)) continue; + + const upb_msgdef *subdef = upb_downcast_msgdef(upb_fielddef_subdef(f)); + upb_value subm_ent; + if (upb_inttable_lookupptr(&s->tab, subdef, &subm_ent)) { + upb_handlers_setsubhandlers(h, f, upb_value_getptr(subm_ent)); + } else { + upb_handlers *sub_mh = newformsg(subdef, &sub_mh, s); + if (!sub_mh) goto oom; + upb_handlers_setsubhandlers(h, f, sub_mh); + upb_handlers_unref(sub_mh, &sub_mh); + } + } + return h; + +oom: + upb_handlers_unref(h, owner); + return NULL; +} + +// Given a selector for a STARTSUBMSG handler, resolves to a pointer to the +// subhandlers for this submessage field. +#define SUBH(h, selector) (h->sub[selector]) + +// The selector for a submessage field is the field index. +#define SUBH_F(h, f) SUBH(h, f->index_) + +static int32_t trygetsel(upb_handlers *h, const upb_fielddef *f, + upb_handlertype_t type) { + upb_selector_t sel; + assert(!upb_handlers_isfrozen(h)); + if (upb_handlers_msgdef(h) != upb_fielddef_containingtype(f)) { + upb_status_seterrf( + &h->status_, "type mismatch: field %s does not belong to message %s", + upb_fielddef_name(f), upb_msgdef_fullname(upb_handlers_msgdef(h))); + return -1; + } + if (!upb_handlers_getselector(f, type, &sel)) { + upb_status_seterrf( + &h->status_, + "type mismatch: cannot register handler type %d for field %s", + type, upb_fielddef_name(f)); + return -1; + } + return sel; +} + +static upb_selector_t handlers_getsel(upb_handlers *h, const upb_fielddef *f, + upb_handlertype_t type) { + int32_t sel = trygetsel(h, f, type); + assert(sel >= 0); + return sel; +} + +static const void **returntype(upb_handlers *h, const upb_fielddef *f, + upb_handlertype_t type) { + return &h->table[handlers_getsel(h, f, type)].attr.return_closure_type_; +} + +static bool doset(upb_handlers *h, int32_t sel, const upb_fielddef *f, + upb_handlertype_t type, upb_func *func, + upb_handlerattr *attr) { + assert(!upb_handlers_isfrozen(h)); + + if (sel < 0) { + upb_status_seterrmsg(&h->status_, + "incorrect handler type for this field."); + return false; + } + + if (h->table[sel].func) { + upb_status_seterrmsg(&h->status_, + "cannot change handler once it has been set."); + return false; + } + + upb_handlerattr set_attr = UPB_HANDLERATTR_INITIALIZER; + if (attr) { + set_attr = *attr; + } + + // Check that the given closure type matches the closure type that has been + // established for this context (if any). + const void *closure_type = upb_handlerattr_closuretype(&set_attr); + const void **context_closure_type; + + if (type == UPB_HANDLER_STRING) { + context_closure_type = returntype(h, f, UPB_HANDLER_STARTSTR); + } else if (f && upb_fielddef_isseq(f) && + type != UPB_HANDLER_STARTSEQ && + type != UPB_HANDLER_ENDSEQ) { + context_closure_type = returntype(h, f, UPB_HANDLER_STARTSEQ); + } else { + context_closure_type = &h->top_closure_type; + } + + if (closure_type && *context_closure_type && + closure_type != *context_closure_type) { + // TODO(haberman): better message for debugging. + upb_status_seterrmsg(&h->status_, "closure type does not match"); + return false; + } + + if (closure_type) + *context_closure_type = closure_type; + + // If this is a STARTSEQ or STARTSTR handler, check that the returned pointer + // matches any pre-existing expectations about what type is expected. + if (type == UPB_HANDLER_STARTSEQ || type == UPB_HANDLER_STARTSTR) { + const void *return_type = upb_handlerattr_returnclosuretype(&set_attr); + const void *table_return_type = + upb_handlerattr_returnclosuretype(&h->table[sel].attr); + if (return_type && table_return_type && return_type != table_return_type) { + upb_status_seterrmsg(&h->status_, "closure return type does not match"); + return false; + } + + if (table_return_type && !return_type) + upb_handlerattr_setreturnclosuretype(&set_attr, table_return_type); + } + + h->table[sel].func = (upb_func*)func; + h->table[sel].attr = set_attr; + return true; +} + +// Returns the effective closure type for this handler (which will propagate +// from outer frames if this frame has no START* handler). Not implemented for +// UPB_HANDLER_STRING at the moment since this is not needed. Returns NULL is +// the effective closure type is unspecified (either no handler was registered +// to specify it or the handler that was registered did not specify the closure +// type). +const void *effective_closure_type(upb_handlers *h, const upb_fielddef *f, + upb_handlertype_t type) { + assert(type != UPB_HANDLER_STRING); + const void *ret = h->top_closure_type; + upb_selector_t sel; + if (upb_fielddef_isseq(f) && + type != UPB_HANDLER_STARTSEQ && + type != UPB_HANDLER_ENDSEQ && + h->table[sel = handlers_getsel(h, f, UPB_HANDLER_STARTSEQ)].func) { + ret = upb_handlerattr_returnclosuretype(&h->table[sel].attr); + } + + if (type == UPB_HANDLER_STRING && + h->table[sel = handlers_getsel(h, f, UPB_HANDLER_STARTSTR)].func) { + ret = upb_handlerattr_returnclosuretype(&h->table[sel].attr); + } + + // The effective type of the submessage; not used yet. + // if (type == SUBMESSAGE && + // h->table[sel = handlers_getsel(h, f, UPB_HANDLER_STARTSUBMSG)].func) { + // ret = upb_handlerattr_returnclosuretype(&h->table[sel].attr); + // } + + return ret; +} + +// Checks whether the START* handler specified by f & type is missing even +// though it is required to convert the established type of an outer frame +// ("closure_type") into the established type of an inner frame (represented in +// the return closure type of this handler's attr. +bool checkstart(upb_handlers *h, const upb_fielddef *f, upb_handlertype_t type, + upb_status *status) { + upb_selector_t sel = handlers_getsel(h, f, type); + if (h->table[sel].func) return true; + const void *closure_type = effective_closure_type(h, f, type); + const upb_handlerattr *attr = &h->table[sel].attr; + const void *return_closure_type = upb_handlerattr_returnclosuretype(attr); + if (closure_type && return_closure_type && + closure_type != return_closure_type) { + upb_status_seterrf(status, + "expected start handler to return sub type for field %f", + upb_fielddef_name(f)); + return false; + } + return true; +} + +/* Public interface ***********************************************************/ + +bool upb_handlers_isfrozen(const upb_handlers *h) { + return upb_refcounted_isfrozen(UPB_UPCAST(h)); +} + +void upb_handlers_ref(const upb_handlers *h, const void *owner) { + upb_refcounted_ref(UPB_UPCAST(h), owner); +} + +void upb_handlers_unref(const upb_handlers *h, const void *owner) { + upb_refcounted_unref(UPB_UPCAST(h), owner); +} + +void upb_handlers_donateref( + const upb_handlers *h, const void *from, const void *to) { + upb_refcounted_donateref(UPB_UPCAST(h), from, to); +} + +void upb_handlers_checkref(const upb_handlers *h, const void *owner) { + upb_refcounted_checkref(UPB_UPCAST(h), owner); +} + +upb_handlers *upb_handlers_new(const upb_msgdef *md, const void *owner) { + assert(upb_msgdef_isfrozen(md)); + + int extra = sizeof(upb_handlers_tabent) * (md->selector_count - 1); + upb_handlers *h = calloc(sizeof(*h) + extra, 1); + if (!h) return NULL; + + h->msg = md; + upb_msgdef_ref(h->msg, h); + upb_status_clear(&h->status_); + h->sub = calloc(md->submsg_field_count, sizeof(*h->sub)); + if (!h->sub) goto oom; + if (!upb_refcounted_init(UPB_UPCAST(h), &vtbl, owner)) goto oom; + if (!upb_inttable_init(&h->cleanup_, UPB_CTYPE_FPTR)) goto oom; + + // calloc() above initialized all handlers to NULL. + return h; + +oom: + freehandlers(UPB_UPCAST(h)); + return NULL; +} + +const upb_handlers *upb_handlers_newfrozen(const upb_msgdef *m, + const void *owner, + upb_handlers_callback *callback, + const void *closure) { + dfs_state state; + state.callback = callback; + state.closure = closure; + if (!upb_inttable_init(&state.tab, UPB_CTYPE_PTR)) return NULL; + + upb_handlers *ret = newformsg(m, owner, &state); + + upb_inttable_uninit(&state.tab); + if (!ret) return NULL; + + upb_refcounted *r = UPB_UPCAST(ret); + bool ok = upb_refcounted_freeze(&r, 1, NULL, UPB_MAX_HANDLER_DEPTH); + UPB_ASSERT_VAR(ok, ok); + + return ret; +} + +const upb_status *upb_handlers_status(upb_handlers *h) { + assert(!upb_handlers_isfrozen(h)); + return &h->status_; +} + +void upb_handlers_clearerr(upb_handlers *h) { + assert(!upb_handlers_isfrozen(h)); + upb_status_clear(&h->status_); +} + +#define SETTER(name, handlerctype, handlertype) \ + bool upb_handlers_set ## name(upb_handlers *h, const upb_fielddef *f, \ + handlerctype func, upb_handlerattr *attr) { \ + int32_t sel = trygetsel(h, f, handlertype); \ + return doset(h, sel, f, handlertype, (upb_func*)func, attr); \ + } + +SETTER(int32, upb_int32_handlerfunc*, UPB_HANDLER_INT32); +SETTER(int64, upb_int64_handlerfunc*, UPB_HANDLER_INT64); +SETTER(uint32, upb_uint32_handlerfunc*, UPB_HANDLER_UINT32); +SETTER(uint64, upb_uint64_handlerfunc*, UPB_HANDLER_UINT64); +SETTER(float, upb_float_handlerfunc*, UPB_HANDLER_FLOAT); +SETTER(double, upb_double_handlerfunc*, UPB_HANDLER_DOUBLE); +SETTER(bool, upb_bool_handlerfunc*, UPB_HANDLER_BOOL); +SETTER(startstr, upb_startstr_handlerfunc*, UPB_HANDLER_STARTSTR); +SETTER(string, upb_string_handlerfunc*, UPB_HANDLER_STRING); +SETTER(endstr, upb_endfield_handlerfunc*, UPB_HANDLER_ENDSTR); +SETTER(startseq, upb_startfield_handlerfunc*, UPB_HANDLER_STARTSEQ); +SETTER(startsubmsg, upb_startfield_handlerfunc*, UPB_HANDLER_STARTSUBMSG); +SETTER(endsubmsg, upb_endfield_handlerfunc*, UPB_HANDLER_ENDSUBMSG); +SETTER(endseq, upb_endfield_handlerfunc*, UPB_HANDLER_ENDSEQ); + +#undef SETTER + +bool upb_handlers_setstartmsg(upb_handlers *h, upb_startmsg_handlerfunc *func, + upb_handlerattr *attr) { + return doset(h, UPB_STARTMSG_SELECTOR, NULL, UPB_HANDLER_INT32, + (upb_func *)func, attr); +} + +bool upb_handlers_setendmsg(upb_handlers *h, upb_endmsg_handlerfunc *func, + upb_handlerattr *attr) { + assert(!upb_handlers_isfrozen(h)); + return doset(h, UPB_ENDMSG_SELECTOR, NULL, UPB_HANDLER_INT32, + (upb_func *)func, attr); +} + +bool upb_handlers_setsubhandlers(upb_handlers *h, const upb_fielddef *f, + const upb_handlers *sub) { + assert(sub); + assert(!upb_handlers_isfrozen(h)); + assert(upb_fielddef_issubmsg(f)); + if (SUBH_F(h, f)) return false; // Can't reset. + if (UPB_UPCAST(upb_handlers_msgdef(sub)) != upb_fielddef_subdef(f)) { + return false; + } + SUBH_F(h, f) = sub; + upb_ref2(sub, h); + return true; +} + +const upb_handlers *upb_handlers_getsubhandlers(const upb_handlers *h, + const upb_fielddef *f) { + assert(upb_fielddef_issubmsg(f)); + return SUBH_F(h, f); +} + +bool upb_handlers_getattr(const upb_handlers *h, upb_selector_t sel, + upb_handlerattr *attr) { + if (!upb_handlers_gethandler(h, sel)) + return false; + *attr = h->table[sel].attr; + return true; +} + +const upb_handlers *upb_handlers_getsubhandlers_sel(const upb_handlers *h, + upb_selector_t sel) { + // STARTSUBMSG selector in sel is the field's selector base. + return SUBH(h, sel - UPB_STATIC_SELECTOR_COUNT); +} + +const upb_msgdef *upb_handlers_msgdef(const upb_handlers *h) { return h->msg; } + +bool upb_handlers_addcleanup(upb_handlers *h, void *p, upb_handlerfree *func) { + if (upb_inttable_lookupptr(&h->cleanup_, p, NULL)) { + return false; + } + bool ok = upb_inttable_insertptr(&h->cleanup_, p, upb_value_fptr(func)); + UPB_ASSERT_VAR(ok, ok); + return true; +} + + +/* "Static" methods ***********************************************************/ + +bool upb_handlers_freeze(upb_handlers *const*handlers, int n, upb_status *s) { + // TODO: verify we have a transitive closure. + for (int i = 0; i < n; i++) { + upb_handlers *h = handlers[i]; + + if (!upb_ok(&h->status_)) { + upb_status_seterrf(s, "handlers for message %s had error status: %s", + upb_msgdef_fullname(upb_handlers_msgdef(h)), + upb_status_errmsg(&h->status_)); + return false; + } + + // Check that there are no closure mismatches due to missing Start* handlers + // or subhandlers with different type-level types. + upb_msg_iter j; + for(upb_msg_begin(&j, h->msg); !upb_msg_done(&j); upb_msg_next(&j)) { + + const upb_fielddef *f = upb_msg_iter_field(&j); + if (upb_fielddef_isseq(f)) { + if (!checkstart(h, f, UPB_HANDLER_STARTSEQ, s)) + return false; + } + + if (upb_fielddef_isstring(f)) { + if (!checkstart(h, f, UPB_HANDLER_STARTSTR, s)) + return false; + } + + if (upb_fielddef_issubmsg(f)) { + bool hashandler = false; + if (upb_handlers_gethandler( + h, handlers_getsel(h, f, UPB_HANDLER_STARTSUBMSG)) || + upb_handlers_gethandler( + h, handlers_getsel(h, f, UPB_HANDLER_ENDSUBMSG))) { + hashandler = true; + } + + if (upb_fielddef_isseq(f) && + (upb_handlers_gethandler( + h, handlers_getsel(h, f, UPB_HANDLER_STARTSEQ)) || + upb_handlers_gethandler( + h, handlers_getsel(h, f, UPB_HANDLER_ENDSEQ)))) { + hashandler = true; + } + + if (hashandler && !upb_handlers_getsubhandlers(h, f)) { + // For now we add an empty subhandlers in this case. It makes the + // decoder code generator simpler, because it only has to handle two + // cases (submessage has handlers or not) as opposed to three + // (submessage has handlers in enclosing message but no subhandlers). + // + // This makes parsing less efficient in the case that we want to + // notice a submessage but skip its contents (like if we're testing + // for submessage presence or counting the number of repeated + // submessages). In this case we will end up parsing the submessage + // field by field and throwing away the results for each, instead of + // skipping the whole delimited thing at once. If this is an issue we + // can revisit it, but do remember that this only arises when you have + // handlers (startseq/startsubmsg/endsubmsg/endseq) set for the + // submessage but no subhandlers. The uses cases for this are + // limited. + upb_handlers *sub = upb_handlers_new(upb_fielddef_msgsubdef(f), &sub); + upb_handlers_setsubhandlers(h, f, sub); + upb_handlers_unref(sub, &sub); + } + + // TODO(haberman): check type of submessage. + // This is slightly tricky; also consider whether we should check that + // they match at setsubhandlers time. + } + } + } + + if (!upb_refcounted_freeze((upb_refcounted*const*)handlers, n, s, + UPB_MAX_HANDLER_DEPTH)) { + return false; + } + + return true; +} + +upb_handlertype_t upb_handlers_getprimitivehandlertype(const upb_fielddef *f) { + switch (upb_fielddef_type(f)) { + case UPB_TYPE_INT32: + case UPB_TYPE_ENUM: return UPB_HANDLER_INT32; + case UPB_TYPE_INT64: return UPB_HANDLER_INT64; + case UPB_TYPE_UINT32: return UPB_HANDLER_UINT32; + case UPB_TYPE_UINT64: return UPB_HANDLER_UINT64; + case UPB_TYPE_FLOAT: return UPB_HANDLER_FLOAT; + case UPB_TYPE_DOUBLE: return UPB_HANDLER_DOUBLE; + case UPB_TYPE_BOOL: return UPB_HANDLER_BOOL; + default: assert(false); return -1; // Invalid input. + } +} + +bool upb_handlers_getselector(const upb_fielddef *f, upb_handlertype_t type, + upb_selector_t *s) { + switch (type) { + case UPB_HANDLER_INT32: + case UPB_HANDLER_INT64: + case UPB_HANDLER_UINT32: + case UPB_HANDLER_UINT64: + case UPB_HANDLER_FLOAT: + case UPB_HANDLER_DOUBLE: + case UPB_HANDLER_BOOL: + if (!upb_fielddef_isprimitive(f) || + upb_handlers_getprimitivehandlertype(f) != type) + return false; + *s = f->selector_base; + break; + case UPB_HANDLER_STRING: + if (upb_fielddef_isstring(f)) { + *s = f->selector_base; + } else if (upb_fielddef_lazy(f)) { + *s = f->selector_base + 3; + } else { + return false; + } + break; + case UPB_HANDLER_STARTSTR: + if (upb_fielddef_isstring(f) || upb_fielddef_lazy(f)) { + *s = f->selector_base + 1; + } else { + return false; + } + break; + case UPB_HANDLER_ENDSTR: + if (upb_fielddef_isstring(f) || upb_fielddef_lazy(f)) { + *s = f->selector_base + 2; + } else { + return false; + } + break; + case UPB_HANDLER_STARTSEQ: + if (!upb_fielddef_isseq(f)) return false; + *s = f->selector_base - 2; + break; + case UPB_HANDLER_ENDSEQ: + if (!upb_fielddef_isseq(f)) return false; + *s = f->selector_base - 1; + break; + case UPB_HANDLER_STARTSUBMSG: + if (!upb_fielddef_issubmsg(f)) return false; + // Selectors for STARTSUBMSG are at the beginning of the table so that the + // selector can also be used as an index into the "sub" array of + // subhandlers. The indexes for the two into these two tables are the + // same, except that in the handler table the static selectors come first. + *s = f->index_ + UPB_STATIC_SELECTOR_COUNT; + break; + case UPB_HANDLER_ENDSUBMSG: + if (!upb_fielddef_issubmsg(f)) return false; + *s = f->selector_base; + break; + } + assert(*s < upb_fielddef_containingtype(f)->selector_count); + return true; +} + +uint32_t upb_handlers_selectorbaseoffset(const upb_fielddef *f) { + return upb_fielddef_isseq(f) ? 2 : 0; +} + +uint32_t upb_handlers_selectorcount(const upb_fielddef *f) { + uint32_t ret = 1; + if (upb_fielddef_isseq(f)) ret += 2; // STARTSEQ/ENDSEQ + if (upb_fielddef_isstring(f)) ret += 2; // [STRING]/STARTSTR/ENDSTR + if (upb_fielddef_issubmsg(f)) { + // ENDSUBMSG (STARTSUBMSG is at table beginning) + ret += 0; + if (upb_fielddef_lazy(f)) { + // STARTSTR/ENDSTR/STRING (for lazy) + ret += 3; + } + } + return ret; +} + + +/* upb_handlerattr ************************************************************/ + +void upb_handlerattr_init(upb_handlerattr *attr) { + upb_handlerattr from = UPB_HANDLERATTR_INITIALIZER; + memcpy(attr, &from, sizeof(*attr)); +} + +void upb_handlerattr_uninit(upb_handlerattr *attr) { + UPB_UNUSED(attr); +} + +bool upb_handlerattr_sethandlerdata(upb_handlerattr *attr, const void *hd) { + attr->handler_data_ = hd; + return true; +} + +bool upb_handlerattr_setclosuretype(upb_handlerattr *attr, const void *type) { + attr->closure_type_ = type; + return true; +} + +const void *upb_handlerattr_closuretype(const upb_handlerattr *attr) { + return attr->closure_type_; +} + +bool upb_handlerattr_setreturnclosuretype(upb_handlerattr *attr, + const void *type) { + attr->return_closure_type_ = type; + return true; +} + +const void *upb_handlerattr_returnclosuretype(const upb_handlerattr *attr) { + return attr->return_closure_type_; +} + +bool upb_handlerattr_setalwaysok(upb_handlerattr *attr, bool alwaysok) { + attr->alwaysok_ = alwaysok; + return true; +} + +bool upb_handlerattr_alwaysok(const upb_handlerattr *attr) { + return attr->alwaysok_; +} + +/* upb_bufhandle **************************************************************/ + +size_t upb_bufhandle_objofs(const upb_bufhandle *h) { + return h->objofs_; +} + +/* upb_byteshandler ***********************************************************/ + +void upb_byteshandler_init(upb_byteshandler* h) { + memset(h, 0, sizeof(*h)); +} + +// For when we support handlerfree callbacks. +void upb_byteshandler_uninit(upb_byteshandler* h) { + UPB_UNUSED(h); +} + +bool upb_byteshandler_setstartstr(upb_byteshandler *h, + upb_startstr_handlerfunc *func, void *d) { + h->table[UPB_STARTSTR_SELECTOR].func = (upb_func*)func; + h->table[UPB_STARTSTR_SELECTOR].attr.handler_data_ = d; + return true; +} + +bool upb_byteshandler_setstring(upb_byteshandler *h, + upb_string_handlerfunc *func, void *d) { + h->table[UPB_STRING_SELECTOR].func = (upb_func*)func; + h->table[UPB_STRING_SELECTOR].attr.handler_data_ = d; + return true; +} + +bool upb_byteshandler_setendstr(upb_byteshandler *h, + upb_endfield_handlerfunc *func, void *d) { + h->table[UPB_ENDSTR_SELECTOR].func = (upb_func*)func; + h->table[UPB_ENDSTR_SELECTOR].attr.handler_data_ = d; + return true; +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Our key invariants are: + * 1. reference cycles never span groups + * 2. for ref2(to, from), we increment to's count iff group(from) != group(to) + * + * The previous two are how we avoid leaking cycles. Other important + * invariants are: + * 3. for mutable objects "from" and "to", if there exists a ref2(to, from) + * this implies group(from) == group(to). (In practice, what we implement + * is even stronger; "from" and "to" will share a group if there has *ever* + * been a ref2(to, from), but all that is necessary for correctness is the + * weaker one). + * 4. mutable and immutable objects are never in the same group. + */ + + +#include <setjmp.h> +#include <stdlib.h> + +static void freeobj(upb_refcounted *o); + +const char untracked_val; +const void *UPB_UNTRACKED_REF = &untracked_val; + +/* arch-specific atomic primitives *******************************************/ + +#ifdef UPB_THREAD_UNSAFE ////////////////////////////////////////////////////// + +static void atomic_inc(uint32_t *a) { (*a)++; } +static bool atomic_dec(uint32_t *a) { return --(*a) == 0; } + +#elif defined(__GNUC__) || defined(__clang__) ////////////////////////////////// + +static void atomic_inc(uint32_t *a) { __sync_fetch_and_add(a, 1); } +static bool atomic_dec(uint32_t *a) { return __sync_sub_and_fetch(a, 1) == 0; } + +#elif defined(WIN32) /////////////////////////////////////////////////////////// + +#include <Windows.h> + +static void atomic_inc(upb_atomic_t *a) { InterlockedIncrement(&a->val); } +static bool atomic_dec(upb_atomic_t *a) { + return InterlockedDecrement(&a->val) == 0; +} + +#else +#error Atomic primitives not defined for your platform/CPU. \ + Implement them or compile with UPB_THREAD_UNSAFE. +#endif + +// All static objects point to this refcount. +// It is special-cased in ref/unref below. +uint32_t static_refcount = -1; + +// We can avoid atomic ops for statically-declared objects. +// This is a minor optimization but nice since we can avoid degrading under +// contention in this case. + +static void refgroup(uint32_t *group) { + if (group != &static_refcount) + atomic_inc(group); +} + +static bool unrefgroup(uint32_t *group) { + if (group == &static_refcount) { + return false; + } else { + return atomic_dec(group); + } +} + + +/* Reference tracking (debug only) ********************************************/ + +#ifdef UPB_DEBUG_REFS + +#ifdef UPB_THREAD_UNSAFE + +static void upb_lock() {} +static void upb_unlock() {} + +#else + +// User must define functions that lock/unlock a global mutex and link this +// file against them. +void upb_lock(); +void upb_unlock(); + +#endif + +// UPB_DEBUG_REFS mode counts on being able to malloc() memory in some +// code-paths that can normally never fail, like upb_refcounted_ref(). Since +// we have no way to propagage out-of-memory errors back to the user, and since +// these errors can only occur in UPB_DEBUG_REFS mode, we immediately fail. +#define CHECK_OOM(predicate) if (!(predicate)) { assert(predicate); exit(1); } + +typedef struct { + int count; // How many refs there are (duplicates only allowed for ref2). + bool is_ref2; +} trackedref; + +static trackedref *trackedref_new(bool is_ref2) { + trackedref *ret = malloc(sizeof(*ret)); + CHECK_OOM(ret); + ret->count = 1; + ret->is_ref2 = is_ref2; + return ret; +} + +static void track(const upb_refcounted *r, const void *owner, bool ref2) { + assert(owner); + if (owner == UPB_UNTRACKED_REF) return; + + upb_lock(); + upb_value v; + if (upb_inttable_lookupptr(r->refs, owner, &v)) { + trackedref *ref = upb_value_getptr(v); + // Since we allow multiple ref2's for the same to/from pair without + // allocating separate memory for each one, we lose the fine-grained + // tracking behavior we get with regular refs. Since ref2s only happen + // inside upb, we'll accept this limitation until/unless there is a really + // difficult upb-internal bug that can't be figured out without it. + assert(ref2); + assert(ref->is_ref2); + ref->count++; + } else { + trackedref *ref = trackedref_new(ref2); + bool ok = upb_inttable_insertptr(r->refs, owner, upb_value_ptr(ref)); + CHECK_OOM(ok); + if (ref2) { + // We know this cast is safe when it is a ref2, because it's coming from + // another refcounted object. + const upb_refcounted *from = owner; + assert(!upb_inttable_lookupptr(from->ref2s, r, NULL)); + ok = upb_inttable_insertptr(from->ref2s, r, upb_value_ptr(NULL)); + CHECK_OOM(ok); + } + } + upb_unlock(); +} + +static void untrack(const upb_refcounted *r, const void *owner, bool ref2) { + assert(owner); + if (owner == UPB_UNTRACKED_REF) return; + + upb_lock(); + upb_value v; + bool found = upb_inttable_lookupptr(r->refs, owner, &v); + // This assert will fail if an owner attempts to release a ref it didn't have. + UPB_ASSERT_VAR(found, found); + trackedref *ref = upb_value_getptr(v); + assert(ref->is_ref2 == ref2); + if (--ref->count == 0) { + free(ref); + upb_inttable_removeptr(r->refs, owner, NULL); + if (ref2) { + // We know this cast is safe when it is a ref2, because it's coming from + // another refcounted object. + const upb_refcounted *from = owner; + bool removed = upb_inttable_removeptr(from->ref2s, r, NULL); + assert(removed); + } + } + upb_unlock(); +} + +static void checkref(const upb_refcounted *r, const void *owner, bool ref2) { + upb_lock(); + upb_value v; + bool found = upb_inttable_lookupptr(r->refs, owner, &v); + UPB_ASSERT_VAR(found, found); + trackedref *ref = upb_value_getptr(v); + assert(ref->is_ref2 == ref2); + upb_unlock(); +} + +// Populates the given UPB_CTYPE_INT32 inttable with counts of ref2's that +// originate from the given owner. +static void getref2s(const upb_refcounted *owner, upb_inttable *tab) { + upb_lock(); + upb_inttable_iter i; + upb_inttable_begin(&i, owner->ref2s); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + upb_refcounted *to = (upb_refcounted*)upb_inttable_iter_key(&i); + + // To get the count we need to look in the target's table. + upb_value v; + bool found = upb_inttable_lookupptr(to->refs, owner, &v); + assert(found); + trackedref *ref = upb_value_getptr(v); + upb_value count = upb_value_int32(ref->count); + + bool ok = upb_inttable_insertptr(tab, to, count); + CHECK_OOM(ok); + } + upb_unlock(); +} + +typedef struct { + upb_inttable ref2; + const upb_refcounted *obj; +} check_state; + +static void visit_check(const upb_refcounted *obj, const upb_refcounted *subobj, + void *closure) { + check_state *s = closure; + assert(obj == s->obj); + assert(subobj); + upb_inttable *ref2 = &s->ref2; + upb_value v; + bool removed = upb_inttable_removeptr(ref2, subobj, &v); + // The following assertion will fail if the visit() function visits a subobj + // that it did not have a ref2 on, or visits the same subobj too many times. + assert(removed); + int32_t newcount = upb_value_getint32(v) - 1; + if (newcount > 0) { + upb_inttable_insert(ref2, (uintptr_t)subobj, upb_value_int32(newcount)); + } +} + +static void visit(const upb_refcounted *r, upb_refcounted_visit *v, + void *closure) { + // In DEBUG_REFS mode we know what existing ref2 refs there are, so we know + // exactly the set of nodes that visit() should visit. So we verify visit()'s + // correctness here. + check_state state; + state.obj = r; + bool ok = upb_inttable_init(&state.ref2, UPB_CTYPE_INT32); + CHECK_OOM(ok); + getref2s(r, &state.ref2); + + // This should visit any children in the ref2 table. + if (r->vtbl->visit) r->vtbl->visit(r, visit_check, &state); + + // This assertion will fail if the visit() function missed any children. + assert(upb_inttable_count(&state.ref2) == 0); + upb_inttable_uninit(&state.ref2); + if (r->vtbl->visit) r->vtbl->visit(r, v, closure); +} + +static bool trackinit(upb_refcounted *r) { + r->refs = malloc(sizeof(*r->refs)); + r->ref2s = malloc(sizeof(*r->ref2s)); + if (!r->refs || !r->ref2s) goto err1; + + if (!upb_inttable_init(r->refs, UPB_CTYPE_PTR)) goto err1; + if (!upb_inttable_init(r->ref2s, UPB_CTYPE_PTR)) goto err2; + return true; + +err2: + upb_inttable_uninit(r->refs); +err1: + free(r->refs); + free(r->ref2s); + return false; +} + +static void trackfree(const upb_refcounted *r) { + upb_inttable_uninit(r->refs); + upb_inttable_uninit(r->ref2s); + free(r->refs); + free(r->ref2s); +} + +#else + +static void track(const upb_refcounted *r, const void *owner, bool ref2) { + UPB_UNUSED(r); + UPB_UNUSED(owner); + UPB_UNUSED(ref2); +} + +static void untrack(const upb_refcounted *r, const void *owner, bool ref2) { + UPB_UNUSED(r); + UPB_UNUSED(owner); + UPB_UNUSED(ref2); +} + +static void checkref(const upb_refcounted *r, const void *owner, bool ref2) { + UPB_UNUSED(r); + UPB_UNUSED(owner); + UPB_UNUSED(ref2); +} + +static bool trackinit(upb_refcounted *r) { + UPB_UNUSED(r); + return true; +} + +static void trackfree(const upb_refcounted *r) { + UPB_UNUSED(r); +} + +static void visit(const upb_refcounted *r, upb_refcounted_visit *v, + void *closure) { + if (r->vtbl->visit) r->vtbl->visit(r, v, closure); +} + +#endif // UPB_DEBUG_REFS + + +/* freeze() *******************************************************************/ + +// The freeze() operation is by far the most complicated part of this scheme. +// We compute strongly-connected components and then mutate the graph such that +// we preserve the invariants documented at the top of this file. And we must +// handle out-of-memory errors gracefully (without leaving the graph +// inconsistent), which adds to the fun. + +// The state used by the freeze operation (shared across many functions). +typedef struct { + int depth; + int maxdepth; + uint64_t index; + // Maps upb_refcounted* -> attributes (color, etc). attr layout varies by + // color. + upb_inttable objattr; + upb_inttable stack; // stack of upb_refcounted* for Tarjan's algorithm. + upb_inttable groups; // array of uint32_t*, malloc'd refcounts for new groups + upb_status *status; + jmp_buf err; +} tarjan; + +static void release_ref2(const upb_refcounted *obj, + const upb_refcounted *subobj, + void *closure); + +// Node attributes ///////////////////////////////////////////////////////////// + +// After our analysis phase all nodes will be either GRAY or WHITE. + +typedef enum { + BLACK = 0, // Object has not been seen. + GRAY, // Object has been found via a refgroup but may not be reachable. + GREEN, // Object is reachable and is currently on the Tarjan stack. + WHITE, // Object is reachable and has been assigned a group (SCC). +} color_t; + +UPB_NORETURN static void err(tarjan *t) { longjmp(t->err, 1); } +UPB_NORETURN static void oom(tarjan *t) { + upb_status_seterrmsg(t->status, "out of memory"); + err(t); +} + +static uint64_t trygetattr(const tarjan *t, const upb_refcounted *r) { + upb_value v; + return upb_inttable_lookupptr(&t->objattr, r, &v) ? + upb_value_getuint64(v) : 0; +} + +static uint64_t getattr(const tarjan *t, const upb_refcounted *r) { + upb_value v; + bool found = upb_inttable_lookupptr(&t->objattr, r, &v); + UPB_ASSERT_VAR(found, found); + return upb_value_getuint64(v); +} + +static void setattr(tarjan *t, const upb_refcounted *r, uint64_t attr) { + upb_inttable_removeptr(&t->objattr, r, NULL); + upb_inttable_insertptr(&t->objattr, r, upb_value_uint64(attr)); +} + +static color_t color(tarjan *t, const upb_refcounted *r) { + return trygetattr(t, r) & 0x3; // Color is always stored in the low 2 bits. +} + +static void set_gray(tarjan *t, const upb_refcounted *r) { + assert(color(t, r) == BLACK); + setattr(t, r, GRAY); +} + +// Pushes an obj onto the Tarjan stack and sets it to GREEN. +static void push(tarjan *t, const upb_refcounted *r) { + assert(color(t, r) == BLACK || color(t, r) == GRAY); + // This defines the attr layout for the GREEN state. "index" and "lowlink" + // get 31 bits, which is plenty (limit of 2B objects frozen at a time). + setattr(t, r, GREEN | (t->index << 2) | (t->index << 33)); + if (++t->index == 0x80000000) { + upb_status_seterrmsg(t->status, "too many objects to freeze"); + err(t); + } + upb_inttable_push(&t->stack, upb_value_ptr((void*)r)); +} + +// Pops an obj from the Tarjan stack and sets it to WHITE, with a ptr to its +// SCC group. +static upb_refcounted *pop(tarjan *t) { + upb_refcounted *r = upb_value_getptr(upb_inttable_pop(&t->stack)); + assert(color(t, r) == GREEN); + // This defines the attr layout for nodes in the WHITE state. + // Top of group stack is [group, NULL]; we point at group. + setattr(t, r, WHITE | (upb_inttable_count(&t->groups) - 2) << 8); + return r; +} + +static void tarjan_newgroup(tarjan *t) { + uint32_t *group = malloc(sizeof(*group)); + if (!group) oom(t); + // Push group and empty group leader (we'll fill in leader later). + if (!upb_inttable_push(&t->groups, upb_value_ptr(group)) || + !upb_inttable_push(&t->groups, upb_value_ptr(NULL))) { + free(group); + oom(t); + } + *group = 0; +} + +static uint32_t idx(tarjan *t, const upb_refcounted *r) { + assert(color(t, r) == GREEN); + return (getattr(t, r) >> 2) & 0x7FFFFFFF; +} + +static uint32_t lowlink(tarjan *t, const upb_refcounted *r) { + if (color(t, r) == GREEN) { + return getattr(t, r) >> 33; + } else { + return UINT32_MAX; + } +} + +static void set_lowlink(tarjan *t, const upb_refcounted *r, uint32_t lowlink) { + assert(color(t, r) == GREEN); + setattr(t, r, ((uint64_t)lowlink << 33) | (getattr(t, r) & 0x1FFFFFFFF)); +} + +static uint32_t *group(tarjan *t, upb_refcounted *r) { + assert(color(t, r) == WHITE); + uint64_t groupnum = getattr(t, r) >> 8; + upb_value v; + bool found = upb_inttable_lookup(&t->groups, groupnum, &v); + UPB_ASSERT_VAR(found, found); + return upb_value_getptr(v); +} + +// If the group leader for this object's group has not previously been set, +// the given object is assigned to be its leader. +static upb_refcounted *groupleader(tarjan *t, upb_refcounted *r) { + assert(color(t, r) == WHITE); + uint64_t leader_slot = (getattr(t, r) >> 8) + 1; + upb_value v; + bool found = upb_inttable_lookup(&t->groups, leader_slot, &v); + UPB_ASSERT_VAR(found, found); + if (upb_value_getptr(v)) { + return upb_value_getptr(v); + } else { + upb_inttable_remove(&t->groups, leader_slot, NULL); + upb_inttable_insert(&t->groups, leader_slot, upb_value_ptr(r)); + return r; + } +} + + +// Tarjan's algorithm ////////////////////////////////////////////////////////// + +// See: +// http://en.wikipedia.org/wiki/Tarjan%27s_strongly_connected_components_algorithm +static void do_tarjan(const upb_refcounted *obj, tarjan *t); + +static void tarjan_visit(const upb_refcounted *obj, + const upb_refcounted *subobj, + void *closure) { + tarjan *t = closure; + if (++t->depth > t->maxdepth) { + upb_status_seterrf(t->status, "graph too deep to freeze (%d)", t->maxdepth); + err(t); + } else if (subobj->is_frozen || color(t, subobj) == WHITE) { + // Do nothing: we don't want to visit or color already-frozen nodes, + // and WHITE nodes have already been assigned a SCC. + } else if (color(t, subobj) < GREEN) { + // Subdef has not yet been visited; recurse on it. + do_tarjan(subobj, t); + set_lowlink(t, obj, UPB_MIN(lowlink(t, obj), lowlink(t, subobj))); + } else if (color(t, subobj) == GREEN) { + // Subdef is in the stack and hence in the current SCC. + set_lowlink(t, obj, UPB_MIN(lowlink(t, obj), idx(t, subobj))); + } + --t->depth; +} + +static void do_tarjan(const upb_refcounted *obj, tarjan *t) { + if (color(t, obj) == BLACK) { + // We haven't seen this object's group; mark the whole group GRAY. + const upb_refcounted *o = obj; + do { set_gray(t, o); } while ((o = o->next) != obj); + } + + push(t, obj); + visit(obj, tarjan_visit, t); + if (lowlink(t, obj) == idx(t, obj)) { + tarjan_newgroup(t); + while (pop(t) != obj) + ; + } +} + + +// freeze() //////////////////////////////////////////////////////////////////// + +static void crossref(const upb_refcounted *r, const upb_refcounted *subobj, + void *_t) { + tarjan *t = _t; + assert(color(t, r) > BLACK); + if (color(t, subobj) > BLACK && r->group != subobj->group) { + // Previously this ref was not reflected in subobj->group because they + // were in the same group; now that they are split a ref must be taken. + refgroup(subobj->group); + } +} + +static bool freeze(upb_refcounted *const*roots, int n, upb_status *s, + int maxdepth) { + volatile bool ret = false; + + // We run in two passes so that we can allocate all memory before performing + // any mutation of the input -- this allows us to leave the input unchanged + // in the case of memory allocation failure. + tarjan t; + t.index = 0; + t.depth = 0; + t.maxdepth = maxdepth; + t.status = s; + if (!upb_inttable_init(&t.objattr, UPB_CTYPE_UINT64)) goto err1; + if (!upb_inttable_init(&t.stack, UPB_CTYPE_PTR)) goto err2; + if (!upb_inttable_init(&t.groups, UPB_CTYPE_PTR)) goto err3; + if (setjmp(t.err) != 0) goto err4; + + + for (int i = 0; i < n; i++) { + if (color(&t, roots[i]) < GREEN) { + do_tarjan(roots[i], &t); + } + } + + // If we've made it this far, no further errors are possible so it's safe to + // mutate the objects without risk of leaving them in an inconsistent state. + ret = true; + + // The transformation that follows requires care. The preconditions are: + // - all objects in attr map are WHITE or GRAY, and are in mutable groups + // (groups of all mutable objs) + // - no ref2(to, from) refs have incremented count(to) if both "to" and + // "from" are in our attr map (this follows from invariants (2) and (3)) + + // Pass 1: we remove WHITE objects from their mutable groups, and add them to + // new groups according to the SCC's we computed. These new groups will + // consist of only frozen objects. None will be immediately collectible, + // because WHITE objects are by definition reachable from one of "roots", + // which the caller must own refs on. + upb_inttable_iter i; + upb_inttable_begin(&i, &t.objattr); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + upb_refcounted *obj = (upb_refcounted*)upb_inttable_iter_key(&i); + // Since removal from a singly-linked list requires access to the object's + // predecessor, we consider obj->next instead of obj for moving. With the + // while() loop we guarantee that we will visit every node's predecessor. + // Proof: + // 1. every node's predecessor is in our attr map. + // 2. though the loop body may change a node's predecessor, it will only + // change it to be the node we are currently operating on, so with a + // while() loop we guarantee ourselves the chance to remove each node. + while (color(&t, obj->next) == WHITE && + group(&t, obj->next) != obj->next->group) { + // Remove from old group. + upb_refcounted *move = obj->next; + if (obj == move) { + // Removing the last object from a group. + assert(*obj->group == obj->individual_count); + free(obj->group); + } else { + obj->next = move->next; + // This may decrease to zero; we'll collect GRAY objects (if any) that + // remain in the group in the third pass. + assert(*move->group >= move->individual_count); + *move->group -= move->individual_count; + } + + // Add to new group. + upb_refcounted *leader = groupleader(&t, move); + if (move == leader) { + // First object added to new group is its leader. + move->group = group(&t, move); + move->next = move; + *move->group = move->individual_count; + } else { + // Group already has at least one object in it. + assert(leader->group == group(&t, move)); + move->group = group(&t, move); + move->next = leader->next; + leader->next = move; + *move->group += move->individual_count; + } + + move->is_frozen = true; + } + } + + // Pass 2: GRAY and WHITE objects "obj" with ref2(to, obj) references must + // increment count(to) if group(obj) != group(to) (which could now be the + // case if "to" was just frozen). + upb_inttable_begin(&i, &t.objattr); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + upb_refcounted *obj = (upb_refcounted*)upb_inttable_iter_key(&i); + visit(obj, crossref, &t); + } + + // Pass 3: GRAY objects are collected if their group's refcount dropped to + // zero when we removed its white nodes. This can happen if they had only + // been kept alive by virtue of sharing a group with an object that was just + // frozen. + // + // It is important that we do this last, since the GRAY object's free() + // function could call unref2() on just-frozen objects, which will decrement + // refs that were added in pass 2. + upb_inttable_begin(&i, &t.objattr); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + upb_refcounted *obj = (upb_refcounted*)upb_inttable_iter_key(&i); + if (obj->group == NULL || *obj->group == 0) { + if (obj->group) { + // We eagerly free() the group's count (since we can't easily determine + // the group's remaining size it's the easiest way to ensure it gets + // done). + free(obj->group); + + // Visit to release ref2's (done in a separate pass since release_ref2 + // depends on o->group being unmodified so it can test merged()). + upb_refcounted *o = obj; + do { visit(o, release_ref2, NULL); } while ((o = o->next) != obj); + + // Mark "group" fields as NULL so we know to free the objects later in + // this loop, but also don't try to delete the group twice. + o = obj; + do { o->group = NULL; } while ((o = o->next) != obj); + } + freeobj(obj); + } + } + +err4: + if (!ret) { + upb_inttable_begin(&i, &t.groups); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) + free(upb_value_getptr(upb_inttable_iter_value(&i))); + } + upb_inttable_uninit(&t.groups); +err3: + upb_inttable_uninit(&t.stack); +err2: + upb_inttable_uninit(&t.objattr); +err1: + return ret; +} + + +/* Misc internal functions ***************************************************/ + +static bool merged(const upb_refcounted *r, const upb_refcounted *r2) { + return r->group == r2->group; +} + +static void merge(upb_refcounted *r, upb_refcounted *from) { + if (merged(r, from)) return; + *r->group += *from->group; + free(from->group); + upb_refcounted *base = from; + + // Set all refcount pointers in the "from" chain to the merged refcount. + // + // TODO(haberman): this linear algorithm can result in an overall O(n^2) bound + // if the user continuously extends a group by one object. Prevent this by + // using one of the techniques in this paper: + // ftp://www.ncedc.org/outgoing/geomorph/dino/orals/p245-tarjan.pdf + do { from->group = r->group; } while ((from = from->next) != base); + + // Merge the two circularly linked lists by swapping their next pointers. + upb_refcounted *tmp = r->next; + r->next = base->next; + base->next = tmp; +} + +static void unref(const upb_refcounted *r); + +static void release_ref2(const upb_refcounted *obj, + const upb_refcounted *subobj, + void *closure) { + UPB_UNUSED(closure); + untrack(subobj, obj, true); + if (!merged(obj, subobj)) { + assert(subobj->is_frozen); + unref(subobj); + } +} + +static void unref(const upb_refcounted *r) { + if (unrefgroup(r->group)) { + free(r->group); + + // In two passes, since release_ref2 needs a guarantee that any subobjs + // are alive. + const upb_refcounted *o = r; + do { visit(o, release_ref2, NULL); } while((o = o->next) != r); + + o = r; + do { + const upb_refcounted *next = o->next; + assert(o->is_frozen || o->individual_count == 0); + freeobj((upb_refcounted*)o); + o = next; + } while(o != r); + } +} + +static void freeobj(upb_refcounted *o) { + trackfree(o); + o->vtbl->free((upb_refcounted*)o); +} + + +/* Public interface ***********************************************************/ + +bool upb_refcounted_init(upb_refcounted *r, + const struct upb_refcounted_vtbl *vtbl, + const void *owner) { + r->next = r; + r->vtbl = vtbl; + r->individual_count = 0; + r->is_frozen = false; + r->group = malloc(sizeof(*r->group)); + if (!r->group) return false; + *r->group = 0; + if (!trackinit(r)) { + free(r->group); + return false; + } + upb_refcounted_ref(r, owner); + return true; +} + +bool upb_refcounted_isfrozen(const upb_refcounted *r) { + return r->is_frozen; +} + +void upb_refcounted_ref(const upb_refcounted *r, const void *owner) { + track(r, owner, false); + if (!r->is_frozen) + ((upb_refcounted*)r)->individual_count++; + refgroup(r->group); +} + +void upb_refcounted_unref(const upb_refcounted *r, const void *owner) { + untrack(r, owner, false); + if (!r->is_frozen) + ((upb_refcounted*)r)->individual_count--; + unref(r); +} + +void upb_refcounted_ref2(const upb_refcounted *r, upb_refcounted *from) { + assert(!from->is_frozen); // Non-const pointer implies this. + track(r, from, true); + if (r->is_frozen) { + refgroup(r->group); + } else { + merge((upb_refcounted*)r, from); + } +} + +void upb_refcounted_unref2(const upb_refcounted *r, upb_refcounted *from) { + assert(!from->is_frozen); // Non-const pointer implies this. + untrack(r, from, true); + if (r->is_frozen) { + unref(r); + } else { + assert(merged(r, from)); + } +} + +void upb_refcounted_donateref( + const upb_refcounted *r, const void *from, const void *to) { + assert(from != to); + if (to != NULL) + upb_refcounted_ref(r, to); + if (from != NULL) + upb_refcounted_unref(r, from); +} + +void upb_refcounted_checkref(const upb_refcounted *r, const void *owner) { + checkref(r, owner, false); +} + +bool upb_refcounted_freeze(upb_refcounted *const*roots, int n, upb_status *s, + int maxdepth) { + for (int i = 0; i < n; i++) { + assert(!roots[i]->is_frozen); + } + return freeze(roots, n, s, maxdepth); +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2013 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + */ + + +#include <stdlib.h> + +// Fallback implementation if the shim is not specialized by the JIT. +#define SHIM_WRITER(type, ctype) \ + bool upb_shim_set ## type (void *c, const void *hd, ctype val) { \ + uint8_t *m = c; \ + const upb_shim_data *d = hd; \ + if (d->hasbit > 0) \ + *(uint8_t*)&m[d->hasbit / 8] |= 1 << (d->hasbit % 8); \ + *(ctype*)&m[d->offset] = val; \ + return true; \ + } \ + +SHIM_WRITER(double, double) +SHIM_WRITER(float, float) +SHIM_WRITER(int32, int32_t) +SHIM_WRITER(int64, int64_t) +SHIM_WRITER(uint32, uint32_t) +SHIM_WRITER(uint64, uint64_t) +SHIM_WRITER(bool, bool) +#undef SHIM_WRITER + +bool upb_shim_set(upb_handlers *h, const upb_fielddef *f, size_t offset, + int32_t hasbit) { + upb_shim_data *d = malloc(sizeof(*d)); + if (!d) return false; + d->offset = offset; + d->hasbit = hasbit; + + upb_handlerattr attr = UPB_HANDLERATTR_INITIALIZER; + upb_handlerattr_sethandlerdata(&attr, d); + upb_handlerattr_setalwaysok(&attr, true); + upb_handlers_addcleanup(h, d, free); + +#define TYPE(u, l) \ + case UPB_TYPE_##u: \ + ok = upb_handlers_set##l(h, f, upb_shim_set##l, &attr); break; + + bool ok = false; + + switch (upb_fielddef_type(f)) { + TYPE(INT64, int64); + TYPE(INT32, int32); + TYPE(ENUM, int32); + TYPE(UINT64, uint64); + TYPE(UINT32, uint32); + TYPE(DOUBLE, double); + TYPE(FLOAT, float); + TYPE(BOOL, bool); + default: assert(false); break; + } +#undef TYPE + + upb_handlerattr_uninit(&attr); + return ok; +} + +const upb_shim_data *upb_shim_getdata(const upb_handlers *h, upb_selector_t s, + upb_fieldtype_t *type) { + upb_func *f = upb_handlers_gethandler(h, s); + + if ((upb_int64_handlerfunc*)f == upb_shim_setint64) { + *type = UPB_TYPE_INT64; + } else if ((upb_int32_handlerfunc*)f == upb_shim_setint32) { + *type = UPB_TYPE_INT32; + } else if ((upb_uint64_handlerfunc*)f == upb_shim_setuint64) { + *type = UPB_TYPE_UINT64; + } else if ((upb_uint32_handlerfunc*)f == upb_shim_setuint32) { + *type = UPB_TYPE_UINT32; + } else if ((upb_double_handlerfunc*)f == upb_shim_setdouble) { + *type = UPB_TYPE_DOUBLE; + } else if ((upb_float_handlerfunc*)f == upb_shim_setfloat) { + *type = UPB_TYPE_FLOAT; + } else if ((upb_bool_handlerfunc*)f == upb_shim_setbool) { + *type = UPB_TYPE_BOOL; + } else { + return NULL; + } + + return (const upb_shim_data*)upb_handlers_gethandlerdata(h, s); +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2008-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + */ + + +#include <stdlib.h> +#include <string.h> + +bool upb_symtab_isfrozen(const upb_symtab *s) { + return upb_refcounted_isfrozen(UPB_UPCAST(s)); +} + +void upb_symtab_ref(const upb_symtab *s, const void *owner) { + upb_refcounted_ref(UPB_UPCAST(s), owner); +} + +void upb_symtab_unref(const upb_symtab *s, const void *owner) { + upb_refcounted_unref(UPB_UPCAST(s), owner); +} + +void upb_symtab_donateref( + const upb_symtab *s, const void *from, const void *to) { + upb_refcounted_donateref(UPB_UPCAST(s), from, to); +} + +void upb_symtab_checkref(const upb_symtab *s, const void *owner) { + upb_refcounted_checkref(UPB_UPCAST(s), owner); +} + +static void upb_symtab_free(upb_refcounted *r) { + upb_symtab *s = (upb_symtab*)r; + upb_strtable_iter i; + upb_strtable_begin(&i, &s->symtab); + for (; !upb_strtable_done(&i); upb_strtable_next(&i)) { + const upb_def *def = upb_value_getptr(upb_strtable_iter_value(&i)); + upb_def_unref(def, s); + } + upb_strtable_uninit(&s->symtab); + free(s); +} + + +upb_symtab *upb_symtab_new(const void *owner) { + static const struct upb_refcounted_vtbl vtbl = {NULL, &upb_symtab_free}; + upb_symtab *s = malloc(sizeof(*s)); + upb_refcounted_init(UPB_UPCAST(s), &vtbl, owner); + upb_strtable_init(&s->symtab, UPB_CTYPE_PTR); + return s; +} + +void upb_symtab_freeze(upb_symtab *s) { + assert(!upb_symtab_isfrozen(s)); + upb_refcounted *r = UPB_UPCAST(s); + // The symtab does not take ref2's (see refcounted.h) on the defs, because + // defs cannot refer back to the table and therefore cannot create cycles. So + // 0 will suffice for maxdepth here. + bool ok = upb_refcounted_freeze(&r, 1, NULL, 0); + UPB_ASSERT_VAR(ok, ok); +} + +const upb_def *upb_symtab_lookup(const upb_symtab *s, const char *sym) { + upb_value v; + upb_def *ret = upb_strtable_lookup(&s->symtab, sym, &v) ? + upb_value_getptr(v) : NULL; + return ret; +} + +const upb_msgdef *upb_symtab_lookupmsg(const upb_symtab *s, const char *sym) { + upb_value v; + upb_def *def = upb_strtable_lookup(&s->symtab, sym, &v) ? + upb_value_getptr(v) : NULL; + return def ? upb_dyncast_msgdef(def) : NULL; +} + +const upb_enumdef *upb_symtab_lookupenum(const upb_symtab *s, const char *sym) { + upb_value v; + upb_def *def = upb_strtable_lookup(&s->symtab, sym, &v) ? + upb_value_getptr(v) : NULL; + return def ? upb_dyncast_enumdef(def) : NULL; +} + +// Given a symbol and the base symbol inside which it is defined, find the +// symbol's definition in t. +static upb_def *upb_resolvename(const upb_strtable *t, + const char *base, const char *sym) { + if(strlen(sym) == 0) return NULL; + if(sym[0] == '.') { + // Symbols starting with '.' are absolute, so we do a single lookup. + // Slice to omit the leading '.' + upb_value v; + return upb_strtable_lookup(t, sym + 1, &v) ? upb_value_getptr(v) : NULL; + } else { + // Remove components from base until we find an entry or run out. + // TODO: This branch is totally broken, but currently not used. + (void)base; + assert(false); + return NULL; + } +} + +const upb_def *upb_symtab_resolve(const upb_symtab *s, const char *base, + const char *sym) { + upb_def *ret = upb_resolvename(&s->symtab, base, sym); + return ret; +} + +// Searches def and its children to find defs that have the same name as any +// def in "addtab." Returns true if any where found, and as a side-effect adds +// duplicates of these defs into addtab. +// +// We use a modified depth-first traversal that traverses each SCC (which we +// already computed) as if it were a single node. This allows us to traverse +// the possibly-cyclic graph as if it were a DAG and to dup the correct set of +// nodes with O(n) time. +static bool upb_resolve_dfs(const upb_def *def, upb_strtable *addtab, + const void *new_owner, upb_inttable *seen, + upb_status *s) { + // Memoize results of this function for efficiency (since we're traversing a + // DAG this is not needed to limit the depth of the search). + upb_value v; + if (upb_inttable_lookup(seen, (uintptr_t)def, &v)) + return upb_value_getbool(v); + + // Visit submessages for all messages in the SCC. + bool need_dup = false; + const upb_def *base = def; + do { + assert(upb_def_isfrozen(def)); + if (def->type == UPB_DEF_FIELD) continue; + upb_value v; + if (upb_strtable_lookup(addtab, upb_def_fullname(def), &v)) { + need_dup = true; + } + + // For messages, continue the recursion by visiting all subdefs. + const upb_msgdef *m = upb_dyncast_msgdef(def); + if (m) { + upb_msg_iter i; + for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) { + upb_fielddef *f = upb_msg_iter_field(&i); + if (!upb_fielddef_hassubdef(f)) continue; + // |= to avoid short-circuit; we need its side-effects. + need_dup |= upb_resolve_dfs( + upb_fielddef_subdef(f), addtab, new_owner, seen, s); + if (!upb_ok(s)) return false; + } + } + } while ((def = (upb_def*)def->base.next) != base); + + if (need_dup) { + // Dup any defs that don't already have entries in addtab. + def = base; + do { + if (def->type == UPB_DEF_FIELD) continue; + const char *name = upb_def_fullname(def); + if (!upb_strtable_lookup(addtab, name, NULL)) { + upb_def *newdef = upb_def_dup(def, new_owner); + if (!newdef) goto oom; + newdef->came_from_user = false; + if (!upb_strtable_insert(addtab, name, upb_value_ptr(newdef))) + goto oom; + } + } while ((def = (upb_def*)def->base.next) != base); + } + + upb_inttable_insert(seen, (uintptr_t)def, upb_value_bool(need_dup)); + return need_dup; + +oom: + upb_status_seterrmsg(s, "out of memory"); + return false; +} + +// TODO(haberman): we need a lot more testing of error conditions. +// The came_from_user stuff in particular is not tested. +bool upb_symtab_add(upb_symtab *s, upb_def *const*defs, int n, void *ref_donor, + upb_status *status) { + assert(!upb_symtab_isfrozen(s)); + upb_def **add_defs = NULL; + upb_strtable addtab; + if (!upb_strtable_init(&addtab, UPB_CTYPE_PTR)) { + upb_status_seterrmsg(status, "out of memory"); + return false; + } + + // Add new defs to our "add" set. + for (int i = 0; i < n; i++) { + upb_def *def = defs[i]; + if (upb_def_isfrozen(def)) { + upb_status_seterrmsg(status, "added defs must be mutable"); + goto err; + } + assert(!upb_def_isfrozen(def)); + const char *fullname = upb_def_fullname(def); + if (!fullname) { + upb_status_seterrmsg( + status, "Anonymous defs cannot be added to a symtab"); + goto err; + } + + upb_fielddef *f = upb_dyncast_fielddef_mutable(def); + + if (f) { + if (!upb_fielddef_containingtypename(f)) { + upb_status_seterrmsg(status, + "Standalone fielddefs must have a containing type " + "(extendee) name set"); + goto err; + } + } else { + if (upb_strtable_lookup(&addtab, fullname, NULL)) { + upb_status_seterrf(status, "Conflicting defs named '%s'", fullname); + goto err; + } + // We need this to back out properly, because if there is a failure we + // need to donate the ref back to the caller. + def->came_from_user = true; + upb_def_donateref(def, ref_donor, s); + if (!upb_strtable_insert(&addtab, fullname, upb_value_ptr(def))) + goto oom_err; + } + } + + // Add standalone fielddefs (ie. extensions) to the appropriate messages. + // If the appropriate message only exists in the existing symtab, duplicate + // it so we have a mutable copy we can add the fields to. + for (int i = 0; i < n; i++) { + upb_def *def = defs[i]; + upb_fielddef *f = upb_dyncast_fielddef_mutable(def); + if (!f) continue; + const char *msgname = upb_fielddef_containingtypename(f); + // We validated this earlier in this function. + assert(msgname); + + // If the extendee name is absolutely qualified, move past the initial ".". + // TODO(haberman): it is not obvious what it would mean if this was not + // absolutely qualified. + if (msgname[0] == '.') { + msgname++; + } + + upb_value v; + upb_msgdef *m; + if (upb_strtable_lookup(&addtab, msgname, &v)) { + // Extendee is in the set of defs the user asked us to add. + m = upb_value_getptr(v); + } else { + // Need to find and dup the extendee from the existing symtab. + const upb_msgdef *frozen_m = upb_symtab_lookupmsg(s, msgname); + if (!frozen_m) { + upb_status_seterrf(status, + "Tried to extend message %s that does not exist " + "in this SymbolTable.", + msgname); + goto err; + } + m = upb_msgdef_dup(frozen_m, s); + if (!m) goto oom_err; + if (!upb_strtable_insert(&addtab, msgname, upb_value_ptr(m))) { + upb_msgdef_unref(m, s); + goto oom_err; + } + } + + if (!upb_msgdef_addfield(m, f, ref_donor, status)) { + goto err; + } + } + + // Add dups of any existing def that can reach a def with the same name as + // anything in our "add" set. + upb_inttable seen; + if (!upb_inttable_init(&seen, UPB_CTYPE_BOOL)) goto oom_err; + upb_strtable_iter i; + upb_strtable_begin(&i, &s->symtab); + for (; !upb_strtable_done(&i); upb_strtable_next(&i)) { + upb_def *def = upb_value_getptr(upb_strtable_iter_value(&i)); + upb_resolve_dfs(def, &addtab, s, &seen, status); + if (!upb_ok(status)) goto err; + } + upb_inttable_uninit(&seen); + + // Now using the table, resolve symbolic references for subdefs. + upb_strtable_begin(&i, &addtab); + for (; !upb_strtable_done(&i); upb_strtable_next(&i)) { + upb_def *def = upb_value_getptr(upb_strtable_iter_value(&i)); + upb_msgdef *m = upb_dyncast_msgdef_mutable(def); + if (!m) continue; + // Type names are resolved relative to the message in which they appear. + const char *base = upb_msgdef_fullname(m); + + upb_msg_iter j; + for(upb_msg_begin(&j, m); !upb_msg_done(&j); upb_msg_next(&j)) { + upb_fielddef *f = upb_msg_iter_field(&j); + const char *name = upb_fielddef_subdefname(f); + if (name && !upb_fielddef_subdef(f)) { + // Try the lookup in the current set of to-be-added defs first. If not + // there, try existing defs. + upb_def *subdef = upb_resolvename(&addtab, base, name); + if (subdef == NULL) { + subdef = upb_resolvename(&s->symtab, base, name); + } + if (subdef == NULL) { + upb_status_seterrf( + status, "couldn't resolve name '%s' in message '%s'", name, base); + goto err; + } else if (!upb_fielddef_setsubdef(f, subdef, status)) { + goto err; + } + } + } + } + + // We need an array of the defs in addtab, for passing to upb_def_freeze. + add_defs = malloc(sizeof(void*) * upb_strtable_count(&addtab)); + if (add_defs == NULL) goto oom_err; + upb_strtable_begin(&i, &addtab); + for (n = 0; !upb_strtable_done(&i); upb_strtable_next(&i)) { + add_defs[n++] = upb_value_getptr(upb_strtable_iter_value(&i)); + } + + if (!upb_def_freeze(add_defs, n, status)) goto err; + + // This must be delayed until all errors have been detected, since error + // recovery code uses this table to cleanup defs. + upb_strtable_uninit(&addtab); + + // TODO(haberman) we don't properly handle errors after this point (like + // OOM in upb_strtable_insert() below). + for (int i = 0; i < n; i++) { + upb_def *def = add_defs[i]; + const char *name = upb_def_fullname(def); + upb_value v; + if (upb_strtable_remove(&s->symtab, name, &v)) { + const upb_def *def = upb_value_getptr(v); + upb_def_unref(def, s); + } + bool success = upb_strtable_insert(&s->symtab, name, upb_value_ptr(def)); + UPB_ASSERT_VAR(success, success == true); + } + free(add_defs); + return true; + +oom_err: + upb_status_seterrmsg(status, "out of memory"); +err: { + // For defs the user passed in, we need to donate the refs back. For defs + // we dup'd, we need to just unref them. + upb_strtable_iter i; + upb_strtable_begin(&i, &addtab); + for (; !upb_strtable_done(&i); upb_strtable_next(&i)) { + upb_def *def = upb_value_getptr(upb_strtable_iter_value(&i)); + bool came_from_user = def->came_from_user; + def->came_from_user = false; + if (came_from_user) { + upb_def_donateref(def, s, ref_donor); + } else { + upb_def_unref(def, s); + } + } + } + upb_strtable_uninit(&addtab); + free(add_defs); + assert(!upb_ok(status)); + return false; +} + +// Iteration. + +static void advance_to_matching(upb_symtab_iter *iter) { + if (iter->type == UPB_DEF_ANY) + return; + + while (!upb_strtable_done(&iter->iter) && + iter->type != upb_symtab_iter_def(iter)->type) { + upb_strtable_next(&iter->iter); + } +} + +void upb_symtab_begin(upb_symtab_iter *iter, const upb_symtab *s, + upb_deftype_t type) { + upb_strtable_begin(&iter->iter, &s->symtab); + iter->type = type; + advance_to_matching(iter); +} + +void upb_symtab_next(upb_symtab_iter *iter) { + upb_strtable_next(&iter->iter); + advance_to_matching(iter); +} + +bool upb_symtab_done(const upb_symtab_iter *iter) { + return upb_strtable_done(&iter->iter); +} + +const upb_def *upb_symtab_iter_def(const upb_symtab_iter *iter) { + return upb_value_getptr(upb_strtable_iter_value(&iter->iter)); +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Implementation is heavily inspired by Lua's ltable.c. + */ + + +#include <stdlib.h> +#include <string.h> + +#define UPB_MAXARRSIZE 16 // 64k. + +// From Chromium. +#define ARRAY_SIZE(x) \ + ((sizeof(x)/sizeof(0[x])) / ((size_t)(!(sizeof(x) % sizeof(0[x]))))) + +static const double MAX_LOAD = 0.85; + +// The minimum utilization of the array part of a mixed hash/array table. This +// is a speed/memory-usage tradeoff (though it's not straightforward because of +// cache effects). The lower this is, the more memory we'll use. +static const double MIN_DENSITY = 0.1; + +bool is_pow2(uint64_t v) { return v == 0 || (v & (v - 1)) == 0; } + +int log2ceil(uint64_t v) { + int ret = 0; + bool pow2 = is_pow2(v); + while (v >>= 1) ret++; + ret = pow2 ? ret : ret + 1; // Ceiling. + return UPB_MIN(UPB_MAXARRSIZE, ret); +} + +char *upb_strdup(const char *s) { + size_t n = strlen(s) + 1; + char *p = malloc(n); + if (p) memcpy(p, s, n); + return p; +} + +// A type to represent the lookup key of either a strtable or an inttable. +// This is like upb_tabkey, but can carry a size also to allow lookups of +// non-NULL-terminated strings (we don't store string lengths in the table). +typedef struct { + upb_tabkey key; + uint32_t len; // For string keys only. +} lookupkey_t; + +static lookupkey_t strkey(const char *str) { + lookupkey_t k; + k.key.str = (char*)str; + k.len = strlen(str); + return k; +} + +static lookupkey_t strkey2(const char *str, size_t len) { + lookupkey_t k; + k.key.str = (char*)str; + k.len = len; + return k; +} + +static lookupkey_t intkey(uintptr_t key) { + lookupkey_t k; + k.key = upb_intkey(key); + return k; +} + +typedef uint32_t hashfunc_t(upb_tabkey key); +typedef bool eqlfunc_t(upb_tabkey k1, lookupkey_t k2); + +/* Base table (shared code) ***************************************************/ + +// For when we need to cast away const. +static upb_tabent *mutable_entries(upb_table *t) { + return (upb_tabent*)t->entries; +} + +static bool isfull(upb_table *t) { + return (double)(t->count + 1) / upb_table_size(t) > MAX_LOAD; +} + +static bool init(upb_table *t, upb_ctype_t ctype, uint8_t size_lg2) { + t->count = 0; + t->ctype = ctype; + t->size_lg2 = size_lg2; + t->mask = upb_table_size(t) ? upb_table_size(t) - 1 : 0; + size_t bytes = upb_table_size(t) * sizeof(upb_tabent); + if (bytes > 0) { + t->entries = malloc(bytes); + if (!t->entries) return false; + memset(mutable_entries(t), 0, bytes); + } else { + t->entries = NULL; + } + return true; +} + +static void uninit(upb_table *t) { free(mutable_entries(t)); } + +static upb_tabent *emptyent(upb_table *t) { + upb_tabent *e = mutable_entries(t) + upb_table_size(t); + while (1) { if (upb_tabent_isempty(--e)) return e; assert(e > t->entries); } +} + +static upb_tabent *getentry_mutable(upb_table *t, uint32_t hash) { + return (upb_tabent*)upb_getentry(t, hash); +} + +static const upb_tabent *findentry(const upb_table *t, lookupkey_t key, + uint32_t hash, eqlfunc_t *eql) { + if (t->size_lg2 == 0) return NULL; + const upb_tabent *e = upb_getentry(t, hash); + if (upb_tabent_isempty(e)) return NULL; + while (1) { + if (eql(e->key, key)) return e; + if ((e = e->next) == NULL) return NULL; + } +} + +static upb_tabent *findentry_mutable(upb_table *t, lookupkey_t key, + uint32_t hash, eqlfunc_t *eql) { + return (upb_tabent*)findentry(t, key, hash, eql); +} + +static bool lookup(const upb_table *t, lookupkey_t key, upb_value *v, + uint32_t hash, eqlfunc_t *eql) { + const upb_tabent *e = findentry(t, key, hash, eql); + if (e) { + if (v) { + _upb_value_setval(v, e->val, t->ctype); + } + return true; + } else { + return false; + } +} + +// The given key must not already exist in the table. +static void insert(upb_table *t, lookupkey_t key, upb_value val, + uint32_t hash, hashfunc_t *hashfunc, eqlfunc_t *eql) { + UPB_UNUSED(eql); + assert(findentry(t, key, hash, eql) == NULL); + assert(val.ctype == t->ctype); + t->count++; + upb_tabent *mainpos_e = getentry_mutable(t, hash); + upb_tabent *our_e = mainpos_e; + if (upb_tabent_isempty(mainpos_e)) { + // Our main position is empty; use it. + our_e->next = NULL; + } else { + // Collision. + upb_tabent *new_e = emptyent(t); + // Head of collider's chain. + upb_tabent *chain = getentry_mutable(t, hashfunc(mainpos_e->key)); + if (chain == mainpos_e) { + // Existing ent is in its main posisiton (it has the same hash as us, and + // is the head of our chain). Insert to new ent and append to this chain. + new_e->next = mainpos_e->next; + mainpos_e->next = new_e; + our_e = new_e; + } else { + // Existing ent is not in its main position (it is a node in some other + // chain). This implies that no existing ent in the table has our hash. + // Evict it (updating its chain) and use its ent for head of our chain. + *new_e = *mainpos_e; // copies next. + while (chain->next != mainpos_e) { + chain = (upb_tabent*)chain->next; + assert(chain); + } + chain->next = new_e; + our_e = mainpos_e; + our_e->next = NULL; + } + } + our_e->key = key.key; + our_e->val = val.val; + assert(findentry(t, key, hash, eql) == our_e); +} + +static bool rm(upb_table *t, lookupkey_t key, upb_value *val, + upb_tabkey *removed, uint32_t hash, eqlfunc_t *eql) { + upb_tabent *chain = getentry_mutable(t, hash); + if (upb_tabent_isempty(chain)) return false; + if (eql(chain->key, key)) { + // Element to remove is at the head of its chain. + t->count--; + if (val) { + _upb_value_setval(val, chain->val, t->ctype); + } + if (chain->next) { + upb_tabent *move = (upb_tabent*)chain->next; + *chain = *move; + if (removed) *removed = move->key; + move->key.num = 0; // Make the slot empty. + } else { + if (removed) *removed = chain->key; + chain->key.num = 0; // Make the slot empty. + } + return true; + } else { + // Element to remove is either in a non-head position or not in the table. + while (chain->next && !eql(chain->next->key, key)) + chain = (upb_tabent*)chain->next; + if (chain->next) { + // Found element to remove. + if (val) { + _upb_value_setval(val, chain->next->val, t->ctype); + } + upb_tabent *rm = (upb_tabent*)chain->next; + if (removed) *removed = rm->key; + rm->key.num = 0; + chain->next = rm->next; + t->count--; + return true; + } else { + return false; + } + } +} + +static size_t next(const upb_table *t, size_t i) { + do { + if (++i >= upb_table_size(t)) + return SIZE_MAX; + } while(upb_tabent_isempty(&t->entries[i])); + + return i; +} + +static size_t begin(const upb_table *t) { + return next(t, -1); +} + + +/* upb_strtable ***************************************************************/ + +// A simple "subclass" of upb_table that only adds a hash function for strings. + +static uint32_t strhash(upb_tabkey key) { + return MurmurHash2(key.str, strlen(key.str), 0); +} + +static bool streql(upb_tabkey k1, lookupkey_t k2) { + return strncmp(k1.str, k2.key.str, k2.len) == 0 && k1.str[k2.len] == '\0'; +} + +bool upb_strtable_init(upb_strtable *t, upb_ctype_t ctype) { + return init(&t->t, ctype, 2); +} + +void upb_strtable_uninit(upb_strtable *t) { + for (size_t i = 0; i < upb_table_size(&t->t); i++) + free((void*)t->t.entries[i].key.str); + uninit(&t->t); +} + +bool upb_strtable_resize(upb_strtable *t, size_t size_lg2) { + upb_strtable new_table; + if (!init(&new_table.t, t->t.ctype, size_lg2)) + return false; + upb_strtable_iter i; + upb_strtable_begin(&i, t); + for ( ; !upb_strtable_done(&i); upb_strtable_next(&i)) { + upb_strtable_insert( + &new_table, upb_strtable_iter_key(&i), upb_strtable_iter_value(&i)); + } + upb_strtable_uninit(t); + *t = new_table; + return true; +} + +bool upb_strtable_insert(upb_strtable *t, const char *k, upb_value v) { + if (isfull(&t->t)) { + // Need to resize. New table of double the size, add old elements to it. + if (!upb_strtable_resize(t, t->t.size_lg2 + 1)) { + return false; + } + } + if ((k = upb_strdup(k)) == NULL) return false; + + lookupkey_t key = strkey(k); + uint32_t hash = MurmurHash2(key.key.str, key.len, 0); + insert(&t->t, strkey(k), v, hash, &strhash, &streql); + return true; +} + +bool upb_strtable_lookup2(const upb_strtable *t, const char *key, size_t len, + upb_value *v) { + uint32_t hash = MurmurHash2(key, len, 0); + return lookup(&t->t, strkey2(key, len), v, hash, &streql); +} + +bool upb_strtable_remove(upb_strtable *t, const char *key, upb_value *val) { + uint32_t hash = MurmurHash2(key, strlen(key), 0); + upb_tabkey tabkey; + if (rm(&t->t, strkey(key), val, &tabkey, hash, &streql)) { + free((void*)tabkey.str); + return true; + } else { + return false; + } +} + +// Iteration + +static const upb_tabent *str_tabent(const upb_strtable_iter *i) { + return &i->t->t.entries[i->index]; +} + +void upb_strtable_begin(upb_strtable_iter *i, const upb_strtable *t) { + i->t = t; + i->index = begin(&t->t); +} + +void upb_strtable_next(upb_strtable_iter *i) { + i->index = next(&i->t->t, i->index); +} + +bool upb_strtable_done(const upb_strtable_iter *i) { + return i->index >= upb_table_size(&i->t->t) || + upb_tabent_isempty(str_tabent(i)); +} + +const char *upb_strtable_iter_key(upb_strtable_iter *i) { + assert(!upb_strtable_done(i)); + return str_tabent(i)->key.str; +} + +upb_value upb_strtable_iter_value(const upb_strtable_iter *i) { + assert(!upb_strtable_done(i)); + return _upb_value_val(str_tabent(i)->val, i->t->t.ctype); +} + +void upb_strtable_iter_setdone(upb_strtable_iter *i) { + i->index = SIZE_MAX; +} + +bool upb_strtable_iter_isequal(const upb_strtable_iter *i1, + const upb_strtable_iter *i2) { + if (upb_strtable_done(i1) && upb_strtable_done(i2)) + return true; + return i1->t == i2->t && i1->index == i2->index; +} + + +/* upb_inttable ***************************************************************/ + +// For inttables we use a hybrid structure where small keys are kept in an +// array and large keys are put in the hash table. + +static uint32_t inthash(upb_tabkey key) { return upb_inthash(key.num); } + +static bool inteql(upb_tabkey k1, lookupkey_t k2) { + return k1.num == k2.key.num; +} + +static _upb_value *mutable_array(upb_inttable *t) { + return (_upb_value*)t->array; +} + +static _upb_value *inttable_val(upb_inttable *t, uintptr_t key) { + if (key < t->array_size) { + return upb_arrhas(t->array[key]) ? &(mutable_array(t)[key]) : NULL; + } else { + upb_tabent *e = + findentry_mutable(&t->t, intkey(key), upb_inthash(key), &inteql); + return e ? &e->val : NULL; + } +} + +static const _upb_value *inttable_val_const(const upb_inttable *t, + uintptr_t key) { + return inttable_val((upb_inttable*)t, key); +} + +size_t upb_inttable_count(const upb_inttable *t) { + return t->t.count + t->array_count; +} + +static void check(upb_inttable *t) { + UPB_UNUSED(t); +#if defined(UPB_DEBUG_TABLE) && !defined(NDEBUG) + // This check is very expensive (makes inserts/deletes O(N)). + size_t count = 0; + upb_inttable_iter i; + upb_inttable_begin(&i, t); + for(; !upb_inttable_done(&i); upb_inttable_next(&i), count++) { + assert(upb_inttable_lookup(t, upb_inttable_iter_key(&i), NULL)); + } + assert(count == upb_inttable_count(t)); +#endif +} + +bool upb_inttable_sizedinit(upb_inttable *t, upb_ctype_t ctype, + size_t asize, int hsize_lg2) { + if (!init(&t->t, ctype, hsize_lg2)) return false; + // Always make the array part at least 1 long, so that we know key 0 + // won't be in the hash part, which simplifies things. + t->array_size = UPB_MAX(1, asize); + t->array_count = 0; + size_t array_bytes = t->array_size * sizeof(upb_value); + t->array = malloc(array_bytes); + if (!t->array) { + uninit(&t->t); + return false; + } + memset(mutable_array(t), 0xff, array_bytes); + check(t); + return true; +} + +bool upb_inttable_init(upb_inttable *t, upb_ctype_t ctype) { + return upb_inttable_sizedinit(t, ctype, 0, 4); +} + +void upb_inttable_uninit(upb_inttable *t) { + uninit(&t->t); + free(mutable_array(t)); +} + +bool upb_inttable_insert(upb_inttable *t, uintptr_t key, upb_value val) { + assert(upb_arrhas(val.val)); + if (key < t->array_size) { + assert(!upb_arrhas(t->array[key])); + t->array_count++; + mutable_array(t)[key] = val.val; + } else { + if (isfull(&t->t)) { + // Need to resize the hash part, but we re-use the array part. + upb_table new_table; + if (!init(&new_table, t->t.ctype, t->t.size_lg2 + 1)) + return false; + size_t i; + for (i = begin(&t->t); i < upb_table_size(&t->t); i = next(&t->t, i)) { + const upb_tabent *e = &t->t.entries[i]; + upb_value v; + _upb_value_setval(&v, e->val, t->t.ctype); + uint32_t hash = upb_inthash(e->key.num); + insert(&new_table, intkey(e->key.num), v, hash, &inthash, &inteql); + } + + assert(t->t.count == new_table.count); + + uninit(&t->t); + t->t = new_table; + } + insert(&t->t, intkey(key), val, upb_inthash(key), &inthash, &inteql); + } + check(t); + return true; +} + +bool upb_inttable_lookup(const upb_inttable *t, uintptr_t key, upb_value *v) { + const _upb_value *table_v = inttable_val_const(t, key); + if (!table_v) return false; + if (v) _upb_value_setval(v, *table_v, t->t.ctype); + return true; +} + +bool upb_inttable_replace(upb_inttable *t, uintptr_t key, upb_value val) { + _upb_value *table_v = inttable_val(t, key); + if (!table_v) return false; + *table_v = val.val; + return true; +} + +bool upb_inttable_remove(upb_inttable *t, uintptr_t key, upb_value *val) { + bool success; + if (key < t->array_size) { + if (upb_arrhas(t->array[key])) { + t->array_count--; + if (val) { + _upb_value_setval(val, t->array[key], t->t.ctype); + } + _upb_value empty = UPB_ARRAY_EMPTYENT; + mutable_array(t)[key] = empty; + success = true; + } else { + success = false; + } + } else { + upb_tabkey removed; + uint32_t hash = upb_inthash(key); + success = rm(&t->t, intkey(key), val, &removed, hash, &inteql); + } + check(t); + return success; +} + +bool upb_inttable_push(upb_inttable *t, upb_value val) { + return upb_inttable_insert(t, upb_inttable_count(t), val); +} + +upb_value upb_inttable_pop(upb_inttable *t) { + upb_value val; + bool ok = upb_inttable_remove(t, upb_inttable_count(t) - 1, &val); + UPB_ASSERT_VAR(ok, ok); + return val; +} + +bool upb_inttable_insertptr(upb_inttable *t, const void *key, upb_value val) { + return upb_inttable_insert(t, (uintptr_t)key, val); +} + +bool upb_inttable_lookupptr(const upb_inttable *t, const void *key, + upb_value *v) { + return upb_inttable_lookup(t, (uintptr_t)key, v); +} + +bool upb_inttable_removeptr(upb_inttable *t, const void *key, upb_value *val) { + return upb_inttable_remove(t, (uintptr_t)key, val); +} + +void upb_inttable_compact(upb_inttable *t) { + // Create a power-of-two histogram of the table keys. + int counts[UPB_MAXARRSIZE + 1] = {0}; + uintptr_t max_key = 0; + upb_inttable_iter i; + upb_inttable_begin(&i, t); + for (; !upb_inttable_done(&i); upb_inttable_next(&i)) { + uintptr_t key = upb_inttable_iter_key(&i); + if (key > max_key) { + max_key = key; + } + counts[log2ceil(key)]++; + } + + int arr_size; + int arr_count = upb_inttable_count(t); + + if (upb_inttable_count(t) >= max_key * MIN_DENSITY) { + // We can put 100% of the entries in the array part. + arr_size = max_key + 1; + } else { + // Find the largest power of two that satisfies the MIN_DENSITY definition. + for (int size_lg2 = ARRAY_SIZE(counts) - 1; size_lg2 > 1; size_lg2--) { + arr_size = 1 << size_lg2; + arr_count -= counts[size_lg2]; + if (arr_count >= arr_size * MIN_DENSITY) { + break; + } + } + } + + // Array part must always be at least 1 entry large to catch lookups of key + // 0. Key 0 must always be in the array part because "0" in the hash part + // denotes an empty entry. + arr_size = UPB_MAX(arr_size, 1); + + // Insert all elements into new, perfectly-sized table. + int hash_count = upb_inttable_count(t) - arr_count; + int hash_size = hash_count ? (hash_count / MAX_LOAD) + 1 : 0; + int hashsize_lg2 = log2ceil(hash_size); + assert(hash_count >= 0); + + upb_inttable new_t; + upb_inttable_sizedinit(&new_t, t->t.ctype, arr_size, hashsize_lg2); + upb_inttable_begin(&i, t); + for (; !upb_inttable_done(&i); upb_inttable_next(&i)) { + uintptr_t k = upb_inttable_iter_key(&i); + upb_inttable_insert(&new_t, k, upb_inttable_iter_value(&i)); + } + assert(new_t.array_size == arr_size); + assert(new_t.t.size_lg2 == hashsize_lg2); + upb_inttable_uninit(t); + *t = new_t; +} + +// Iteration. + +static const upb_tabent *int_tabent(const upb_inttable_iter *i) { + assert(!i->array_part); + return &i->t->t.entries[i->index]; +} + +static _upb_value int_arrent(const upb_inttable_iter *i) { + assert(i->array_part); + return i->t->array[i->index]; +} + +void upb_inttable_begin(upb_inttable_iter *i, const upb_inttable *t) { + i->t = t; + i->index = -1; + i->array_part = true; + upb_inttable_next(i); +} + +void upb_inttable_next(upb_inttable_iter *iter) { + const upb_inttable *t = iter->t; + if (iter->array_part) { + while (++iter->index < t->array_size) { + if (upb_arrhas(int_arrent(iter))) { + return; + } + } + iter->array_part = false; + iter->index = begin(&t->t); + } else { + iter->index = next(&t->t, iter->index); + } +} + +bool upb_inttable_done(const upb_inttable_iter *i) { + if (i->array_part) { + return i->index >= i->t->array_size || + !upb_arrhas(int_arrent(i)); + } else { + return i->index >= upb_table_size(&i->t->t) || + upb_tabent_isempty(int_tabent(i)); + } +} + +uintptr_t upb_inttable_iter_key(const upb_inttable_iter *i) { + assert(!upb_inttable_done(i)); + return i->array_part ? i->index : int_tabent(i)->key.num; +} + +upb_value upb_inttable_iter_value(const upb_inttable_iter *i) { + assert(!upb_inttable_done(i)); + return _upb_value_val( + i->array_part ? i->t->array[i->index] : int_tabent(i)->val, + i->t->t.ctype); +} + +void upb_inttable_iter_setdone(upb_inttable_iter *i) { + i->index = SIZE_MAX; + i->array_part = false; +} + +bool upb_inttable_iter_isequal(const upb_inttable_iter *i1, + const upb_inttable_iter *i2) { + if (upb_inttable_done(i1) && upb_inttable_done(i2)) + return true; + return i1->t == i2->t && i1->index == i2->index && + i1->array_part == i2->array_part; +} + +#ifdef UPB_UNALIGNED_READS_OK +//----------------------------------------------------------------------------- +// MurmurHash2, by Austin Appleby (released as public domain). +// Reformatted and C99-ified by Joshua Haberman. +// Note - This code makes a few assumptions about how your machine behaves - +// 1. We can read a 4-byte value from any address without crashing +// 2. sizeof(int) == 4 (in upb this limitation is removed by using uint32_t +// And it has a few limitations - +// 1. It will not work incrementally. +// 2. It will not produce the same results on little-endian and big-endian +// machines. +uint32_t MurmurHash2(const void *key, size_t len, uint32_t seed) { + // 'm' and 'r' are mixing constants generated offline. + // They're not really 'magic', they just happen to work well. + const uint32_t m = 0x5bd1e995; + const int32_t r = 24; + + // Initialize the hash to a 'random' value + uint32_t h = seed ^ len; + + // Mix 4 bytes at a time into the hash + const uint8_t * data = (const uint8_t *)key; + while(len >= 4) { + uint32_t k = *(uint32_t *)data; + + k *= m; + k ^= k >> r; + k *= m; + + h *= m; + h ^= k; + + data += 4; + len -= 4; + } + + // Handle the last few bytes of the input array + switch(len) { + case 3: h ^= data[2] << 16; + case 2: h ^= data[1] << 8; + case 1: h ^= data[0]; h *= m; + }; + + // Do a few final mixes of the hash to ensure the last few + // bytes are well-incorporated. + h ^= h >> 13; + h *= m; + h ^= h >> 15; + + return h; +} + +#else // !UPB_UNALIGNED_READS_OK + +//----------------------------------------------------------------------------- +// MurmurHashAligned2, by Austin Appleby +// Same algorithm as MurmurHash2, but only does aligned reads - should be safer +// on certain platforms. +// Performance will be lower than MurmurHash2 + +#define MIX(h,k,m) { k *= m; k ^= k >> r; k *= m; h *= m; h ^= k; } + +uint32_t MurmurHash2(const void * key, size_t len, uint32_t seed) { + const uint32_t m = 0x5bd1e995; + const int32_t r = 24; + const uint8_t * data = (const uint8_t *)key; + uint32_t h = seed ^ len; + uint8_t align = (uintptr_t)data & 3; + + if(align && (len >= 4)) { + // Pre-load the temp registers + uint32_t t = 0, d = 0; + + switch(align) { + case 1: t |= data[2] << 16; + case 2: t |= data[1] << 8; + case 3: t |= data[0]; + } + + t <<= (8 * align); + + data += 4-align; + len -= 4-align; + + int32_t sl = 8 * (4-align); + int32_t sr = 8 * align; + + // Mix + + while(len >= 4) { + d = *(uint32_t *)data; + t = (t >> sr) | (d << sl); + + uint32_t k = t; + + MIX(h,k,m); + + t = d; + + data += 4; + len -= 4; + } + + // Handle leftover data in temp registers + + d = 0; + + if(len >= align) { + switch(align) { + case 3: d |= data[2] << 16; + case 2: d |= data[1] << 8; + case 1: d |= data[0]; + } + + uint32_t k = (t >> sr) | (d << sl); + MIX(h,k,m); + + data += align; + len -= align; + + //---------- + // Handle tail bytes + + switch(len) { + case 3: h ^= data[2] << 16; + case 2: h ^= data[1] << 8; + case 1: h ^= data[0]; h *= m; + }; + } else { + switch(len) { + case 3: d |= data[2] << 16; + case 2: d |= data[1] << 8; + case 1: d |= data[0]; + case 0: h ^= (t >> sr) | (d << sl); h *= m; + } + } + + h ^= h >> 13; + h *= m; + h ^= h >> 15; + + return h; + } else { + while(len >= 4) { + uint32_t k = *(uint32_t *)data; + + MIX(h,k,m); + + data += 4; + len -= 4; + } + + //---------- + // Handle tail bytes + + switch(len) { + case 3: h ^= data[2] << 16; + case 2: h ^= data[1] << 8; + case 1: h ^= data[0]; h *= m; + }; + + h ^= h >> 13; + h *= m; + h ^= h >> 15; + + return h; + } +} +#undef MIX + +#endif // UPB_UNALIGNED_READS_OK +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + */ + +#include <errno.h> +#include <stdarg.h> +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +bool upb_dumptostderr(void *closure, const upb_status* status) { + UPB_UNUSED(closure); + fprintf(stderr, "%s\n", upb_status_errmsg(status)); + return false; +} + +// Guarantee null-termination and provide ellipsis truncation. +// It may be tempting to "optimize" this by initializing these final +// four bytes up-front and then being careful never to overwrite them, +// this is safer and simpler. +static void nullz(upb_status *status) { + const char *ellipsis = "..."; + size_t len = strlen(ellipsis); + assert(sizeof(status->msg) > len); + memcpy(status->msg + sizeof(status->msg) - len, ellipsis, len); +} + +void upb_status_clear(upb_status *status) { + upb_status blank = UPB_STATUS_INIT; + upb_status_copy(status, &blank); +} + +bool upb_ok(const upb_status *status) { return status->ok_; } + +upb_errorspace *upb_status_errspace(const upb_status *status) { + return status->error_space_; +} + +int upb_status_errcode(const upb_status *status) { return status->code_; } + +const char *upb_status_errmsg(const upb_status *status) { return status->msg; } + +void upb_status_seterrmsg(upb_status *status, const char *msg) { + if (!status) return; + status->ok_ = false; + strncpy(status->msg, msg, sizeof(status->msg)); + nullz(status); +} + +void upb_status_seterrf(upb_status *status, const char *fmt, ...) { + va_list args; + va_start(args, fmt); + upb_status_vseterrf(status, fmt, args); + va_end(args); +} + +void upb_status_vseterrf(upb_status *status, const char *fmt, va_list args) { + if (!status) return; + status->ok_ = false; + vsnprintf(status->msg, sizeof(status->msg), fmt, args); + nullz(status); +} + +void upb_status_seterrcode(upb_status *status, upb_errorspace *space, + int code) { + if (!status) return; + status->ok_ = false; + status->error_space_ = space; + status->code_ = code; + space->set_message(status, code); +} + +void upb_status_copy(upb_status *to, const upb_status *from) { + if (!to) return; + *to = *from; +} +// This file was generated by upbc (the upb compiler). +// Do not edit -- your changes will be discarded when the file is +// regenerated. + + +static const upb_msgdef msgs[20]; +static const upb_fielddef fields[81]; +static const upb_enumdef enums[4]; +static const upb_tabent strentries[236]; +static const upb_tabent intentries[14]; +static const _upb_value arrays[232]; + +#ifdef UPB_DEBUG_REFS +static upb_inttable reftables[212]; +#endif + +static const upb_msgdef msgs[20] = { + UPB_MSGDEF_INIT("google.protobuf.DescriptorProto", 27, 6, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[0], 8, 7), UPB_STRTABLE_INIT(7, 15, UPB_CTYPE_PTR, 4, &strentries[0]),&reftables[0], &reftables[1]), + UPB_MSGDEF_INIT("google.protobuf.DescriptorProto.ExtensionRange", 4, 0, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[8], 3, 2), UPB_STRTABLE_INIT(2, 3, UPB_CTYPE_PTR, 2, &strentries[16]),&reftables[2], &reftables[3]), + UPB_MSGDEF_INIT("google.protobuf.EnumDescriptorProto", 11, 2, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[11], 4, 3), UPB_STRTABLE_INIT(3, 3, UPB_CTYPE_PTR, 2, &strentries[20]),&reftables[4], &reftables[5]), + UPB_MSGDEF_INIT("google.protobuf.EnumOptions", 7, 1, UPB_INTTABLE_INIT(1, 1, UPB_CTYPE_PTR, 1, &intentries[0], &arrays[15], 8, 1), UPB_STRTABLE_INIT(2, 3, UPB_CTYPE_PTR, 2, &strentries[24]),&reftables[6], &reftables[7]), + UPB_MSGDEF_INIT("google.protobuf.EnumValueDescriptorProto", 8, 1, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[23], 4, 3), UPB_STRTABLE_INIT(3, 3, UPB_CTYPE_PTR, 2, &strentries[28]),&reftables[8], &reftables[9]), + UPB_MSGDEF_INIT("google.protobuf.EnumValueOptions", 6, 1, UPB_INTTABLE_INIT(1, 1, UPB_CTYPE_PTR, 1, &intentries[2], &arrays[27], 4, 0), UPB_STRTABLE_INIT(1, 3, UPB_CTYPE_PTR, 2, &strentries[32]),&reftables[10], &reftables[11]), + UPB_MSGDEF_INIT("google.protobuf.FieldDescriptorProto", 19, 1, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[31], 9, 8), UPB_STRTABLE_INIT(8, 15, UPB_CTYPE_PTR, 4, &strentries[36]),&reftables[12], &reftables[13]), + UPB_MSGDEF_INIT("google.protobuf.FieldOptions", 14, 1, UPB_INTTABLE_INIT(1, 1, UPB_CTYPE_PTR, 1, &intentries[4], &arrays[40], 32, 6), UPB_STRTABLE_INIT(7, 15, UPB_CTYPE_PTR, 4, &strentries[52]),&reftables[14], &reftables[15]), + UPB_MSGDEF_INIT("google.protobuf.FileDescriptorProto", 39, 6, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[72], 12, 11), UPB_STRTABLE_INIT(11, 15, UPB_CTYPE_PTR, 4, &strentries[68]),&reftables[16], &reftables[17]), + UPB_MSGDEF_INIT("google.protobuf.FileDescriptorSet", 6, 1, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[84], 2, 1), UPB_STRTABLE_INIT(1, 3, UPB_CTYPE_PTR, 2, &strentries[84]),&reftables[18], &reftables[19]), + UPB_MSGDEF_INIT("google.protobuf.FileOptions", 21, 1, UPB_INTTABLE_INIT(1, 1, UPB_CTYPE_PTR, 1, &intentries[6], &arrays[86], 64, 9), UPB_STRTABLE_INIT(10, 15, UPB_CTYPE_PTR, 4, &strentries[88]),&reftables[20], &reftables[21]), + UPB_MSGDEF_INIT("google.protobuf.MessageOptions", 8, 1, UPB_INTTABLE_INIT(1, 1, UPB_CTYPE_PTR, 1, &intentries[8], &arrays[150], 16, 2), UPB_STRTABLE_INIT(3, 3, UPB_CTYPE_PTR, 2, &strentries[104]),&reftables[22], &reftables[23]), + UPB_MSGDEF_INIT("google.protobuf.MethodDescriptorProto", 13, 1, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[166], 5, 4), UPB_STRTABLE_INIT(4, 7, UPB_CTYPE_PTR, 3, &strentries[108]),&reftables[24], &reftables[25]), + UPB_MSGDEF_INIT("google.protobuf.MethodOptions", 6, 1, UPB_INTTABLE_INIT(1, 1, UPB_CTYPE_PTR, 1, &intentries[10], &arrays[171], 4, 0), UPB_STRTABLE_INIT(1, 3, UPB_CTYPE_PTR, 2, &strentries[116]),&reftables[26], &reftables[27]), + UPB_MSGDEF_INIT("google.protobuf.ServiceDescriptorProto", 11, 2, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[175], 4, 3), UPB_STRTABLE_INIT(3, 3, UPB_CTYPE_PTR, 2, &strentries[120]),&reftables[28], &reftables[29]), + UPB_MSGDEF_INIT("google.protobuf.ServiceOptions", 6, 1, UPB_INTTABLE_INIT(1, 1, UPB_CTYPE_PTR, 1, &intentries[12], &arrays[179], 4, 0), UPB_STRTABLE_INIT(1, 3, UPB_CTYPE_PTR, 2, &strentries[124]),&reftables[30], &reftables[31]), + UPB_MSGDEF_INIT("google.protobuf.SourceCodeInfo", 6, 1, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[183], 2, 1), UPB_STRTABLE_INIT(1, 3, UPB_CTYPE_PTR, 2, &strentries[128]),&reftables[32], &reftables[33]), + UPB_MSGDEF_INIT("google.protobuf.SourceCodeInfo.Location", 14, 0, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[185], 5, 4), UPB_STRTABLE_INIT(4, 7, UPB_CTYPE_PTR, 3, &strentries[132]),&reftables[34], &reftables[35]), + UPB_MSGDEF_INIT("google.protobuf.UninterpretedOption", 18, 1, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[190], 9, 7), UPB_STRTABLE_INIT(7, 15, UPB_CTYPE_PTR, 4, &strentries[140]),&reftables[36], &reftables[37]), + UPB_MSGDEF_INIT("google.protobuf.UninterpretedOption.NamePart", 6, 0, UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_PTR, 0, NULL, &arrays[199], 3, 2), UPB_STRTABLE_INIT(2, 3, UPB_CTYPE_PTR, 2, &strentries[156]),&reftables[38], &reftables[39]), +}; + +static const upb_fielddef fields[81] = { + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "aggregate_value", 8, &msgs[18], NULL, 15, 6, {0},&reftables[40], &reftables[41]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "allow_alias", 2, &msgs[3], NULL, 6, 1, {0},&reftables[42], &reftables[43]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "cc_generic_services", 16, &msgs[10], NULL, 17, 6, {0},&reftables[44], &reftables[45]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_ENUM, 0, false, false, false, false, "ctype", 1, &msgs[7], UPB_UPCAST(&enums[2]), 6, 1, {0},&reftables[46], &reftables[47]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "default_value", 7, &msgs[6], NULL, 16, 7, {0},&reftables[48], &reftables[49]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_STRING, 0, false, false, false, false, "dependency", 3, &msgs[8], NULL, 30, 8, {0},&reftables[50], &reftables[51]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "deprecated", 3, &msgs[7], NULL, 8, 3, {0},&reftables[52], &reftables[53]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_DOUBLE, 0, false, false, false, false, "double_value", 6, &msgs[18], NULL, 11, 4, {0},&reftables[54], &reftables[55]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, false, "end", 2, &msgs[1], NULL, 3, 1, {0},&reftables[56], &reftables[57]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "enum_type", 4, &msgs[0], UPB_UPCAST(&msgs[2]), 16, 2, {0},&reftables[58], &reftables[59]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "enum_type", 5, &msgs[8], UPB_UPCAST(&msgs[2]), 13, 1, {0},&reftables[60], &reftables[61]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "experimental_map_key", 9, &msgs[7], NULL, 10, 5, {0},&reftables[62], &reftables[63]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "extendee", 2, &msgs[6], NULL, 7, 2, {0},&reftables[64], &reftables[65]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "extension", 7, &msgs[8], UPB_UPCAST(&msgs[6]), 19, 3, {0},&reftables[66], &reftables[67]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "extension", 6, &msgs[0], UPB_UPCAST(&msgs[6]), 22, 4, {0},&reftables[68], &reftables[69]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "extension_range", 5, &msgs[0], UPB_UPCAST(&msgs[1]), 19, 3, {0},&reftables[70], &reftables[71]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "field", 2, &msgs[0], UPB_UPCAST(&msgs[6]), 10, 0, {0},&reftables[72], &reftables[73]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "file", 1, &msgs[9], UPB_UPCAST(&msgs[8]), 5, 0, {0},&reftables[74], &reftables[75]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "go_package", 11, &msgs[10], NULL, 14, 5, {0},&reftables[76], &reftables[77]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "identifier_value", 3, &msgs[18], NULL, 6, 1, {0},&reftables[78], &reftables[79]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "input_type", 2, &msgs[12], NULL, 7, 2, {0},&reftables[80], &reftables[81]), + UPB_FIELDDEF_INIT(UPB_LABEL_REQUIRED, UPB_TYPE_BOOL, 0, false, false, false, false, "is_extension", 2, &msgs[19], NULL, 5, 1, {0},&reftables[82], &reftables[83]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "java_generate_equals_and_hash", 20, &msgs[10], NULL, 20, 9, {0},&reftables[84], &reftables[85]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "java_generic_services", 17, &msgs[10], NULL, 18, 7, {0},&reftables[86], &reftables[87]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "java_multiple_files", 10, &msgs[10], NULL, 13, 4, {0},&reftables[88], &reftables[89]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "java_outer_classname", 8, &msgs[10], NULL, 9, 2, {0},&reftables[90], &reftables[91]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "java_package", 1, &msgs[10], NULL, 6, 1, {0},&reftables[92], &reftables[93]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_ENUM, 0, false, false, false, false, "label", 4, &msgs[6], UPB_UPCAST(&enums[0]), 11, 4, {0},&reftables[94], &reftables[95]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "lazy", 5, &msgs[7], NULL, 9, 4, {0},&reftables[96], &reftables[97]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "leading_comments", 3, &msgs[17], NULL, 8, 2, {0},&reftables[98], &reftables[99]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "location", 1, &msgs[16], UPB_UPCAST(&msgs[17]), 5, 0, {0},&reftables[100], &reftables[101]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "message_set_wire_format", 1, &msgs[11], NULL, 6, 1, {0},&reftables[102], &reftables[103]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "message_type", 4, &msgs[8], UPB_UPCAST(&msgs[0]), 10, 0, {0},&reftables[104], &reftables[105]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "method", 2, &msgs[14], UPB_UPCAST(&msgs[12]), 6, 0, {0},&reftables[106], &reftables[107]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "name", 1, &msgs[8], NULL, 22, 6, {0},&reftables[108], &reftables[109]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "name", 1, &msgs[14], NULL, 8, 2, {0},&reftables[110], &reftables[111]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "name", 2, &msgs[18], UPB_UPCAST(&msgs[19]), 5, 0, {0},&reftables[112], &reftables[113]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "name", 1, &msgs[4], NULL, 4, 1, {0},&reftables[114], &reftables[115]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "name", 1, &msgs[0], NULL, 24, 6, {0},&reftables[116], &reftables[117]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "name", 1, &msgs[12], NULL, 4, 1, {0},&reftables[118], &reftables[119]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "name", 1, &msgs[2], NULL, 8, 2, {0},&reftables[120], &reftables[121]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "name", 1, &msgs[6], NULL, 4, 1, {0},&reftables[122], &reftables[123]), + UPB_FIELDDEF_INIT(UPB_LABEL_REQUIRED, UPB_TYPE_STRING, 0, false, false, false, false, "name_part", 1, &msgs[19], NULL, 2, 0, {0},&reftables[124], &reftables[125]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_INT64, UPB_INTFMT_VARIABLE, false, false, false, false, "negative_int_value", 5, &msgs[18], NULL, 10, 3, {0},&reftables[126], &reftables[127]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "nested_type", 3, &msgs[0], UPB_UPCAST(&msgs[0]), 13, 1, {0},&reftables[128], &reftables[129]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "no_standard_descriptor_accessor", 2, &msgs[11], NULL, 7, 2, {0},&reftables[130], &reftables[131]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, false, "number", 3, &msgs[6], NULL, 10, 3, {0},&reftables[132], &reftables[133]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, false, "number", 2, &msgs[4], NULL, 7, 2, {0},&reftables[134], &reftables[135]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_ENUM, 0, false, false, false, false, "optimize_for", 9, &msgs[10], UPB_UPCAST(&enums[3]), 12, 3, {0},&reftables[136], &reftables[137]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "options", 7, &msgs[0], UPB_UPCAST(&msgs[11]), 23, 5, {0},&reftables[138], &reftables[139]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "options", 3, &msgs[2], UPB_UPCAST(&msgs[3]), 7, 1, {0},&reftables[140], &reftables[141]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "options", 8, &msgs[6], UPB_UPCAST(&msgs[7]), 3, 0, {0},&reftables[142], &reftables[143]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "options", 3, &msgs[4], UPB_UPCAST(&msgs[5]), 3, 0, {0},&reftables[144], &reftables[145]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "options", 8, &msgs[8], UPB_UPCAST(&msgs[10]), 20, 4, {0},&reftables[146], &reftables[147]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "options", 3, &msgs[14], UPB_UPCAST(&msgs[15]), 7, 1, {0},&reftables[148], &reftables[149]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "options", 4, &msgs[12], UPB_UPCAST(&msgs[13]), 3, 0, {0},&reftables[150], &reftables[151]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "output_type", 3, &msgs[12], NULL, 10, 3, {0},&reftables[152], &reftables[153]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "package", 2, &msgs[8], NULL, 25, 7, {0},&reftables[154], &reftables[155]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "packed", 2, &msgs[7], NULL, 7, 2, {0},&reftables[156], &reftables[157]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, true, "path", 1, &msgs[17], NULL, 4, 0, {0},&reftables[158], &reftables[159]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_UINT64, UPB_INTFMT_VARIABLE, false, false, false, false, "positive_int_value", 4, &msgs[18], NULL, 9, 2, {0},&reftables[160], &reftables[161]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, false, "public_dependency", 10, &msgs[8], NULL, 35, 9, {0},&reftables[162], &reftables[163]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "py_generic_services", 18, &msgs[10], NULL, 19, 8, {0},&reftables[164], &reftables[165]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "service", 6, &msgs[8], UPB_UPCAST(&msgs[14]), 16, 2, {0},&reftables[166], &reftables[167]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_MESSAGE, 0, false, false, false, false, "source_code_info", 9, &msgs[8], UPB_UPCAST(&msgs[16]), 21, 5, {0},&reftables[168], &reftables[169]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, true, "span", 2, &msgs[17], NULL, 7, 1, {0},&reftables[170], &reftables[171]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, false, "start", 1, &msgs[1], NULL, 2, 0, {0},&reftables[172], &reftables[173]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BYTES, 0, false, false, false, false, "string_value", 7, &msgs[18], NULL, 12, 5, {0},&reftables[174], &reftables[175]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "trailing_comments", 4, &msgs[17], NULL, 11, 3, {0},&reftables[176], &reftables[177]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_ENUM, 0, false, false, false, false, "type", 5, &msgs[6], UPB_UPCAST(&enums[1]), 12, 5, {0},&reftables[178], &reftables[179]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_STRING, 0, false, false, false, false, "type_name", 6, &msgs[6], NULL, 13, 6, {0},&reftables[180], &reftables[181]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "uninterpreted_option", 999, &msgs[5], UPB_UPCAST(&msgs[18]), 5, 0, {0},&reftables[182], &reftables[183]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "uninterpreted_option", 999, &msgs[15], UPB_UPCAST(&msgs[18]), 5, 0, {0},&reftables[184], &reftables[185]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "uninterpreted_option", 999, &msgs[3], UPB_UPCAST(&msgs[18]), 5, 0, {0},&reftables[186], &reftables[187]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "uninterpreted_option", 999, &msgs[13], UPB_UPCAST(&msgs[18]), 5, 0, {0},&reftables[188], &reftables[189]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "uninterpreted_option", 999, &msgs[10], UPB_UPCAST(&msgs[18]), 5, 0, {0},&reftables[190], &reftables[191]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "uninterpreted_option", 999, &msgs[11], UPB_UPCAST(&msgs[18]), 5, 0, {0},&reftables[192], &reftables[193]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "uninterpreted_option", 999, &msgs[7], UPB_UPCAST(&msgs[18]), 5, 0, {0},&reftables[194], &reftables[195]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_MESSAGE, 0, false, false, false, false, "value", 2, &msgs[2], UPB_UPCAST(&msgs[4]), 6, 0, {0},&reftables[196], &reftables[197]), + UPB_FIELDDEF_INIT(UPB_LABEL_OPTIONAL, UPB_TYPE_BOOL, 0, false, false, false, false, "weak", 10, &msgs[7], NULL, 13, 6, {0},&reftables[198], &reftables[199]), + UPB_FIELDDEF_INIT(UPB_LABEL_REPEATED, UPB_TYPE_INT32, UPB_INTFMT_VARIABLE, false, false, false, false, "weak_dependency", 11, &msgs[8], NULL, 38, 10, {0},&reftables[200], &reftables[201]), +}; + +static const upb_enumdef enums[4] = { + UPB_ENUMDEF_INIT("google.protobuf.FieldDescriptorProto.Label", UPB_STRTABLE_INIT(3, 3, UPB_CTYPE_INT32, 2, &strentries[160]), UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_CSTR, 0, NULL, &arrays[202], 4, 3), 0, &reftables[202], &reftables[203]), + UPB_ENUMDEF_INIT("google.protobuf.FieldDescriptorProto.Type", UPB_STRTABLE_INIT(18, 31, UPB_CTYPE_INT32, 5, &strentries[164]), UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_CSTR, 0, NULL, &arrays[206], 19, 18), 0, &reftables[204], &reftables[205]), + UPB_ENUMDEF_INIT("google.protobuf.FieldOptions.CType", UPB_STRTABLE_INIT(3, 3, UPB_CTYPE_INT32, 2, &strentries[196]), UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_CSTR, 0, NULL, &arrays[225], 3, 3), 0, &reftables[206], &reftables[207]), + UPB_ENUMDEF_INIT("google.protobuf.FileOptions.OptimizeMode", UPB_STRTABLE_INIT(3, 3, UPB_CTYPE_INT32, 2, &strentries[200]), UPB_INTTABLE_INIT(0, 0, UPB_CTYPE_CSTR, 0, NULL, &arrays[228], 4, 3), 0, &reftables[208], &reftables[209]), +}; + +static const upb_tabent strentries[236] = { + {UPB_TABKEY_STR("extension"), UPB_VALUE_INIT_CONSTPTR(&fields[14]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[38]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("field"), UPB_VALUE_INIT_CONSTPTR(&fields[16]), NULL}, + {UPB_TABKEY_STR("extension_range"), UPB_VALUE_INIT_CONSTPTR(&fields[15]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("nested_type"), UPB_VALUE_INIT_CONSTPTR(&fields[44]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("options"), UPB_VALUE_INIT_CONSTPTR(&fields[49]), NULL}, + {UPB_TABKEY_STR("enum_type"), UPB_VALUE_INIT_CONSTPTR(&fields[9]), &strentries[14]}, + {UPB_TABKEY_STR("start"), UPB_VALUE_INIT_CONSTPTR(&fields[66]), NULL}, + {UPB_TABKEY_STR("end"), UPB_VALUE_INIT_CONSTPTR(&fields[8]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("value"), UPB_VALUE_INIT_CONSTPTR(&fields[78]), NULL}, + {UPB_TABKEY_STR("options"), UPB_VALUE_INIT_CONSTPTR(&fields[50]), NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[40]), &strentries[22]}, + {UPB_TABKEY_STR("uninterpreted_option"), UPB_VALUE_INIT_CONSTPTR(&fields[73]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("allow_alias"), UPB_VALUE_INIT_CONSTPTR(&fields[1]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("number"), UPB_VALUE_INIT_CONSTPTR(&fields[47]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("options"), UPB_VALUE_INIT_CONSTPTR(&fields[52]), NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[37]), &strentries[30]}, + {UPB_TABKEY_STR("uninterpreted_option"), UPB_VALUE_INIT_CONSTPTR(&fields[71]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("label"), UPB_VALUE_INIT_CONSTPTR(&fields[27]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[41]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("number"), UPB_VALUE_INIT_CONSTPTR(&fields[46]), &strentries[49]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("type_name"), UPB_VALUE_INIT_CONSTPTR(&fields[70]), NULL}, + {UPB_TABKEY_STR("extendee"), UPB_VALUE_INIT_CONSTPTR(&fields[12]), NULL}, + {UPB_TABKEY_STR("type"), UPB_VALUE_INIT_CONSTPTR(&fields[69]), &strentries[48]}, + {UPB_TABKEY_STR("default_value"), UPB_VALUE_INIT_CONSTPTR(&fields[4]), NULL}, + {UPB_TABKEY_STR("options"), UPB_VALUE_INIT_CONSTPTR(&fields[51]), NULL}, + {UPB_TABKEY_STR("experimental_map_key"), UPB_VALUE_INIT_CONSTPTR(&fields[11]), &strentries[67]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("weak"), UPB_VALUE_INIT_CONSTPTR(&fields[79]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("packed"), UPB_VALUE_INIT_CONSTPTR(&fields[58]), NULL}, + {UPB_TABKEY_STR("lazy"), UPB_VALUE_INIT_CONSTPTR(&fields[28]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("ctype"), UPB_VALUE_INIT_CONSTPTR(&fields[3]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("deprecated"), UPB_VALUE_INIT_CONSTPTR(&fields[6]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("uninterpreted_option"), UPB_VALUE_INIT_CONSTPTR(&fields[77]), NULL}, + {UPB_TABKEY_STR("extension"), UPB_VALUE_INIT_CONSTPTR(&fields[13]), NULL}, + {UPB_TABKEY_STR("weak_dependency"), UPB_VALUE_INIT_CONSTPTR(&fields[80]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[34]), NULL}, + {UPB_TABKEY_STR("service"), UPB_VALUE_INIT_CONSTPTR(&fields[63]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("source_code_info"), UPB_VALUE_INIT_CONSTPTR(&fields[64]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("dependency"), UPB_VALUE_INIT_CONSTPTR(&fields[5]), NULL}, + {UPB_TABKEY_STR("message_type"), UPB_VALUE_INIT_CONSTPTR(&fields[32]), NULL}, + {UPB_TABKEY_STR("package"), UPB_VALUE_INIT_CONSTPTR(&fields[57]), NULL}, + {UPB_TABKEY_STR("options"), UPB_VALUE_INIT_CONSTPTR(&fields[53]), &strentries[82]}, + {UPB_TABKEY_STR("enum_type"), UPB_VALUE_INIT_CONSTPTR(&fields[10]), NULL}, + {UPB_TABKEY_STR("public_dependency"), UPB_VALUE_INIT_CONSTPTR(&fields[61]), &strentries[81]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("file"), UPB_VALUE_INIT_CONSTPTR(&fields[17]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("uninterpreted_option"), UPB_VALUE_INIT_CONSTPTR(&fields[75]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("cc_generic_services"), UPB_VALUE_INIT_CONSTPTR(&fields[2]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("java_multiple_files"), UPB_VALUE_INIT_CONSTPTR(&fields[24]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("java_generic_services"), UPB_VALUE_INIT_CONSTPTR(&fields[23]), &strentries[102]}, + {UPB_TABKEY_STR("java_generate_equals_and_hash"), UPB_VALUE_INIT_CONSTPTR(&fields[22]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("go_package"), UPB_VALUE_INIT_CONSTPTR(&fields[18]), NULL}, + {UPB_TABKEY_STR("java_package"), UPB_VALUE_INIT_CONSTPTR(&fields[26]), NULL}, + {UPB_TABKEY_STR("optimize_for"), UPB_VALUE_INIT_CONSTPTR(&fields[48]), NULL}, + {UPB_TABKEY_STR("py_generic_services"), UPB_VALUE_INIT_CONSTPTR(&fields[62]), NULL}, + {UPB_TABKEY_STR("java_outer_classname"), UPB_VALUE_INIT_CONSTPTR(&fields[25]), NULL}, + {UPB_TABKEY_STR("message_set_wire_format"), UPB_VALUE_INIT_CONSTPTR(&fields[31]), &strentries[106]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("uninterpreted_option"), UPB_VALUE_INIT_CONSTPTR(&fields[76]), NULL}, + {UPB_TABKEY_STR("no_standard_descriptor_accessor"), UPB_VALUE_INIT_CONSTPTR(&fields[45]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[39]), NULL}, + {UPB_TABKEY_STR("input_type"), UPB_VALUE_INIT_CONSTPTR(&fields[20]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("output_type"), UPB_VALUE_INIT_CONSTPTR(&fields[56]), NULL}, + {UPB_TABKEY_STR("options"), UPB_VALUE_INIT_CONSTPTR(&fields[55]), NULL}, + {UPB_TABKEY_STR("uninterpreted_option"), UPB_VALUE_INIT_CONSTPTR(&fields[74]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("options"), UPB_VALUE_INIT_CONSTPTR(&fields[54]), &strentries[122]}, + {UPB_TABKEY_STR("method"), UPB_VALUE_INIT_CONSTPTR(&fields[33]), NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[35]), &strentries[121]}, + {UPB_TABKEY_STR("uninterpreted_option"), UPB_VALUE_INIT_CONSTPTR(&fields[72]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("location"), UPB_VALUE_INIT_CONSTPTR(&fields[30]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("span"), UPB_VALUE_INIT_CONSTPTR(&fields[65]), &strentries[139]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("trailing_comments"), UPB_VALUE_INIT_CONSTPTR(&fields[68]), NULL}, + {UPB_TABKEY_STR("leading_comments"), UPB_VALUE_INIT_CONSTPTR(&fields[29]), &strentries[137]}, + {UPB_TABKEY_STR("path"), UPB_VALUE_INIT_CONSTPTR(&fields[59]), NULL}, + {UPB_TABKEY_STR("double_value"), UPB_VALUE_INIT_CONSTPTR(&fields[7]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("name"), UPB_VALUE_INIT_CONSTPTR(&fields[36]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("negative_int_value"), UPB_VALUE_INIT_CONSTPTR(&fields[43]), NULL}, + {UPB_TABKEY_STR("aggregate_value"), UPB_VALUE_INIT_CONSTPTR(&fields[0]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("positive_int_value"), UPB_VALUE_INIT_CONSTPTR(&fields[60]), NULL}, + {UPB_TABKEY_STR("identifier_value"), UPB_VALUE_INIT_CONSTPTR(&fields[19]), NULL}, + {UPB_TABKEY_STR("string_value"), UPB_VALUE_INIT_CONSTPTR(&fields[67]), &strentries[154]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("is_extension"), UPB_VALUE_INIT_CONSTPTR(&fields[21]), NULL}, + {UPB_TABKEY_STR("name_part"), UPB_VALUE_INIT_CONSTPTR(&fields[42]), NULL}, + {UPB_TABKEY_STR("LABEL_REQUIRED"), UPB_VALUE_INIT_INT32(2), &strentries[162]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("LABEL_REPEATED"), UPB_VALUE_INIT_INT32(3), NULL}, + {UPB_TABKEY_STR("LABEL_OPTIONAL"), UPB_VALUE_INIT_INT32(1), NULL}, + {UPB_TABKEY_STR("TYPE_FIXED64"), UPB_VALUE_INIT_INT32(6), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("TYPE_STRING"), UPB_VALUE_INIT_INT32(9), NULL}, + {UPB_TABKEY_STR("TYPE_FLOAT"), UPB_VALUE_INIT_INT32(2), &strentries[193]}, + {UPB_TABKEY_STR("TYPE_DOUBLE"), UPB_VALUE_INIT_INT32(1), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("TYPE_INT32"), UPB_VALUE_INIT_INT32(5), NULL}, + {UPB_TABKEY_STR("TYPE_SFIXED32"), UPB_VALUE_INIT_INT32(15), NULL}, + {UPB_TABKEY_STR("TYPE_FIXED32"), UPB_VALUE_INIT_INT32(7), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("TYPE_MESSAGE"), UPB_VALUE_INIT_INT32(11), &strentries[194]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("TYPE_INT64"), UPB_VALUE_INIT_INT32(3), &strentries[191]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("TYPE_ENUM"), UPB_VALUE_INIT_INT32(14), NULL}, + {UPB_TABKEY_STR("TYPE_UINT32"), UPB_VALUE_INIT_INT32(13), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("TYPE_UINT64"), UPB_VALUE_INIT_INT32(4), &strentries[190]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("TYPE_SFIXED64"), UPB_VALUE_INIT_INT32(16), NULL}, + {UPB_TABKEY_STR("TYPE_BYTES"), UPB_VALUE_INIT_INT32(12), NULL}, + {UPB_TABKEY_STR("TYPE_SINT64"), UPB_VALUE_INIT_INT32(18), NULL}, + {UPB_TABKEY_STR("TYPE_BOOL"), UPB_VALUE_INIT_INT32(8), NULL}, + {UPB_TABKEY_STR("TYPE_GROUP"), UPB_VALUE_INIT_INT32(10), NULL}, + {UPB_TABKEY_STR("TYPE_SINT32"), UPB_VALUE_INIT_INT32(17), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("CORD"), UPB_VALUE_INIT_INT32(1), NULL}, + {UPB_TABKEY_STR("STRING"), UPB_VALUE_INIT_INT32(0), &strentries[197]}, + {UPB_TABKEY_STR("STRING_PIECE"), UPB_VALUE_INIT_INT32(2), NULL}, + {UPB_TABKEY_STR("CODE_SIZE"), UPB_VALUE_INIT_INT32(2), NULL}, + {UPB_TABKEY_STR("SPEED"), UPB_VALUE_INIT_INT32(1), &strentries[203]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("LITE_RUNTIME"), UPB_VALUE_INIT_INT32(3), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("google.protobuf.SourceCodeInfo.Location"), UPB_VALUE_INIT_CONSTPTR(&msgs[17]), NULL}, + {UPB_TABKEY_STR("google.protobuf.UninterpretedOption"), UPB_VALUE_INIT_CONSTPTR(&msgs[18]), NULL}, + {UPB_TABKEY_STR("google.protobuf.FileDescriptorProto"), UPB_VALUE_INIT_CONSTPTR(&msgs[8]), NULL}, + {UPB_TABKEY_STR("google.protobuf.MethodDescriptorProto"), UPB_VALUE_INIT_CONSTPTR(&msgs[12]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("google.protobuf.EnumValueOptions"), UPB_VALUE_INIT_CONSTPTR(&msgs[5]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("google.protobuf.DescriptorProto"), UPB_VALUE_INIT_CONSTPTR(&msgs[0]), &strentries[228]}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("google.protobuf.SourceCodeInfo"), UPB_VALUE_INIT_CONSTPTR(&msgs[16]), NULL}, + {UPB_TABKEY_STR("google.protobuf.FieldDescriptorProto.Type"), UPB_VALUE_INIT_CONSTPTR(&enums[1]), NULL}, + {UPB_TABKEY_STR("google.protobuf.DescriptorProto.ExtensionRange"), UPB_VALUE_INIT_CONSTPTR(&msgs[1]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_STR("google.protobuf.EnumValueDescriptorProto"), UPB_VALUE_INIT_CONSTPTR(&msgs[4]), NULL}, + {UPB_TABKEY_STR("google.protobuf.FieldOptions"), UPB_VALUE_INIT_CONSTPTR(&msgs[7]), NULL}, + {UPB_TABKEY_STR("google.protobuf.FileOptions"), UPB_VALUE_INIT_CONSTPTR(&msgs[10]), NULL}, + {UPB_TABKEY_STR("google.protobuf.EnumDescriptorProto"), UPB_VALUE_INIT_CONSTPTR(&msgs[2]), &strentries[233]}, + {UPB_TABKEY_STR("google.protobuf.FieldDescriptorProto.Label"), UPB_VALUE_INIT_CONSTPTR(&enums[0]), NULL}, + {UPB_TABKEY_STR("google.protobuf.ServiceDescriptorProto"), UPB_VALUE_INIT_CONSTPTR(&msgs[14]), NULL}, + {UPB_TABKEY_STR("google.protobuf.FieldOptions.CType"), UPB_VALUE_INIT_CONSTPTR(&enums[2]), &strentries[229]}, + {UPB_TABKEY_STR("google.protobuf.FileDescriptorSet"), UPB_VALUE_INIT_CONSTPTR(&msgs[9]), &strentries[235]}, + {UPB_TABKEY_STR("google.protobuf.EnumOptions"), UPB_VALUE_INIT_CONSTPTR(&msgs[3]), NULL}, + {UPB_TABKEY_STR("google.protobuf.FieldDescriptorProto"), UPB_VALUE_INIT_CONSTPTR(&msgs[6]), NULL}, + {UPB_TABKEY_STR("google.protobuf.FileOptions.OptimizeMode"), UPB_VALUE_INIT_CONSTPTR(&enums[3]), &strentries[221]}, + {UPB_TABKEY_STR("google.protobuf.ServiceOptions"), UPB_VALUE_INIT_CONSTPTR(&msgs[15]), NULL}, + {UPB_TABKEY_STR("google.protobuf.MessageOptions"), UPB_VALUE_INIT_CONSTPTR(&msgs[11]), NULL}, + {UPB_TABKEY_STR("google.protobuf.MethodOptions"), UPB_VALUE_INIT_CONSTPTR(&msgs[13]), &strentries[226]}, + {UPB_TABKEY_STR("google.protobuf.UninterpretedOption.NamePart"), UPB_VALUE_INIT_CONSTPTR(&msgs[19]), NULL}, +}; + +static const upb_tabent intentries[14] = { + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NUM(999), UPB_VALUE_INIT_CONSTPTR(&fields[73]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NUM(999), UPB_VALUE_INIT_CONSTPTR(&fields[71]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NUM(999), UPB_VALUE_INIT_CONSTPTR(&fields[77]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NUM(999), UPB_VALUE_INIT_CONSTPTR(&fields[75]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NUM(999), UPB_VALUE_INIT_CONSTPTR(&fields[76]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NUM(999), UPB_VALUE_INIT_CONSTPTR(&fields[74]), NULL}, + {UPB_TABKEY_NONE, UPB__VALUE_INIT_NONE, NULL}, + {UPB_TABKEY_NUM(999), UPB_VALUE_INIT_CONSTPTR(&fields[72]), NULL}, +}; + +static const _upb_value arrays[232] = { + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[38]), + UPB_VALUE_INIT_CONSTPTR(&fields[16]), + UPB_VALUE_INIT_CONSTPTR(&fields[44]), + UPB_VALUE_INIT_CONSTPTR(&fields[9]), + UPB_VALUE_INIT_CONSTPTR(&fields[15]), + UPB_VALUE_INIT_CONSTPTR(&fields[14]), + UPB_VALUE_INIT_CONSTPTR(&fields[49]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[66]), + UPB_VALUE_INIT_CONSTPTR(&fields[8]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[40]), + UPB_VALUE_INIT_CONSTPTR(&fields[78]), + UPB_VALUE_INIT_CONSTPTR(&fields[50]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[1]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[37]), + UPB_VALUE_INIT_CONSTPTR(&fields[47]), + UPB_VALUE_INIT_CONSTPTR(&fields[52]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[41]), + UPB_VALUE_INIT_CONSTPTR(&fields[12]), + UPB_VALUE_INIT_CONSTPTR(&fields[46]), + UPB_VALUE_INIT_CONSTPTR(&fields[27]), + UPB_VALUE_INIT_CONSTPTR(&fields[69]), + UPB_VALUE_INIT_CONSTPTR(&fields[70]), + UPB_VALUE_INIT_CONSTPTR(&fields[4]), + UPB_VALUE_INIT_CONSTPTR(&fields[51]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[3]), + UPB_VALUE_INIT_CONSTPTR(&fields[58]), + UPB_VALUE_INIT_CONSTPTR(&fields[6]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[28]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[11]), + UPB_VALUE_INIT_CONSTPTR(&fields[79]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[34]), + UPB_VALUE_INIT_CONSTPTR(&fields[57]), + UPB_VALUE_INIT_CONSTPTR(&fields[5]), + UPB_VALUE_INIT_CONSTPTR(&fields[32]), + UPB_VALUE_INIT_CONSTPTR(&fields[10]), + UPB_VALUE_INIT_CONSTPTR(&fields[63]), + UPB_VALUE_INIT_CONSTPTR(&fields[13]), + UPB_VALUE_INIT_CONSTPTR(&fields[53]), + UPB_VALUE_INIT_CONSTPTR(&fields[64]), + UPB_VALUE_INIT_CONSTPTR(&fields[61]), + UPB_VALUE_INIT_CONSTPTR(&fields[80]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[17]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[26]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[25]), + UPB_VALUE_INIT_CONSTPTR(&fields[48]), + UPB_VALUE_INIT_CONSTPTR(&fields[24]), + UPB_VALUE_INIT_CONSTPTR(&fields[18]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[2]), + UPB_VALUE_INIT_CONSTPTR(&fields[23]), + UPB_VALUE_INIT_CONSTPTR(&fields[62]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[22]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[31]), + UPB_VALUE_INIT_CONSTPTR(&fields[45]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[39]), + UPB_VALUE_INIT_CONSTPTR(&fields[20]), + UPB_VALUE_INIT_CONSTPTR(&fields[56]), + UPB_VALUE_INIT_CONSTPTR(&fields[55]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[35]), + UPB_VALUE_INIT_CONSTPTR(&fields[33]), + UPB_VALUE_INIT_CONSTPTR(&fields[54]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[30]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[59]), + UPB_VALUE_INIT_CONSTPTR(&fields[65]), + UPB_VALUE_INIT_CONSTPTR(&fields[29]), + UPB_VALUE_INIT_CONSTPTR(&fields[68]), + UPB_ARRAY_EMPTYENT, + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[36]), + UPB_VALUE_INIT_CONSTPTR(&fields[19]), + UPB_VALUE_INIT_CONSTPTR(&fields[60]), + UPB_VALUE_INIT_CONSTPTR(&fields[43]), + UPB_VALUE_INIT_CONSTPTR(&fields[7]), + UPB_VALUE_INIT_CONSTPTR(&fields[67]), + UPB_VALUE_INIT_CONSTPTR(&fields[0]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR(&fields[42]), + UPB_VALUE_INIT_CONSTPTR(&fields[21]), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR("LABEL_OPTIONAL"), + UPB_VALUE_INIT_CONSTPTR("LABEL_REQUIRED"), + UPB_VALUE_INIT_CONSTPTR("LABEL_REPEATED"), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR("TYPE_DOUBLE"), + UPB_VALUE_INIT_CONSTPTR("TYPE_FLOAT"), + UPB_VALUE_INIT_CONSTPTR("TYPE_INT64"), + UPB_VALUE_INIT_CONSTPTR("TYPE_UINT64"), + UPB_VALUE_INIT_CONSTPTR("TYPE_INT32"), + UPB_VALUE_INIT_CONSTPTR("TYPE_FIXED64"), + UPB_VALUE_INIT_CONSTPTR("TYPE_FIXED32"), + UPB_VALUE_INIT_CONSTPTR("TYPE_BOOL"), + UPB_VALUE_INIT_CONSTPTR("TYPE_STRING"), + UPB_VALUE_INIT_CONSTPTR("TYPE_GROUP"), + UPB_VALUE_INIT_CONSTPTR("TYPE_MESSAGE"), + UPB_VALUE_INIT_CONSTPTR("TYPE_BYTES"), + UPB_VALUE_INIT_CONSTPTR("TYPE_UINT32"), + UPB_VALUE_INIT_CONSTPTR("TYPE_ENUM"), + UPB_VALUE_INIT_CONSTPTR("TYPE_SFIXED32"), + UPB_VALUE_INIT_CONSTPTR("TYPE_SFIXED64"), + UPB_VALUE_INIT_CONSTPTR("TYPE_SINT32"), + UPB_VALUE_INIT_CONSTPTR("TYPE_SINT64"), + UPB_VALUE_INIT_CONSTPTR("STRING"), + UPB_VALUE_INIT_CONSTPTR("CORD"), + UPB_VALUE_INIT_CONSTPTR("STRING_PIECE"), + UPB_ARRAY_EMPTYENT, + UPB_VALUE_INIT_CONSTPTR("SPEED"), + UPB_VALUE_INIT_CONSTPTR("CODE_SIZE"), + UPB_VALUE_INIT_CONSTPTR("LITE_RUNTIME"), +}; + +static const upb_symtab symtab = UPB_SYMTAB_INIT(UPB_STRTABLE_INIT(24, 31, UPB_CTYPE_PTR, 5, &strentries[204]), &reftables[210], &reftables[211]); + +const upb_symtab *upbdefs_google_protobuf_descriptor(const void *owner) { + upb_symtab_ref(&symtab, owner); + return &symtab; +} + +#ifdef UPB_DEBUG_REFS +static upb_inttable reftables[212] = { + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), + UPB_EMPTY_INTTABLE_INIT(UPB_CTYPE_PTR), +}; +#endif + +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2008-2009 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * XXX: The routines in this file that consume a string do not currently + * support having the string span buffers. In the future, as upb_sink and + * its buffering/sharing functionality evolve there should be an easy and + * idiomatic way of correctly handling this case. For now, we accept this + * limitation since we currently only parse descriptors from single strings. + */ + + +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +static char *upb_strndup(const char *buf, size_t n) { + char *ret = malloc(n + 1); + if (!ret) return NULL; + memcpy(ret, buf, n); + ret[n] = '\0'; + return ret; +} + +// Returns a newly allocated string that joins input strings together, for +// example: +// join("Foo.Bar", "Baz") -> "Foo.Bar.Baz" +// join("", "Baz") -> "Baz" +// Caller owns a ref on the returned string. +static char *upb_join(const char *base, const char *name) { + if (!base || strlen(base) == 0) { + return upb_strdup(name); + } else { + char *ret = malloc(strlen(base) + strlen(name) + 2); + ret[0] = '\0'; + strcat(ret, base); + strcat(ret, "."); + strcat(ret, name); + return ret; + } +} + + +/* upb_deflist ****************************************************************/ + +void upb_deflist_init(upb_deflist *l) { + l->size = 0; + l->defs = NULL; + l->len = 0; + l->owned = true; +} + +void upb_deflist_uninit(upb_deflist *l) { + if (l->owned) + for(size_t i = 0; i < l->len; i++) + upb_def_unref(l->defs[i], l); + free(l->defs); +} + +bool upb_deflist_push(upb_deflist *l, upb_def *d) { + if(++l->len >= l->size) { + size_t new_size = UPB_MAX(l->size, 4); + new_size *= 2; + l->defs = realloc(l->defs, new_size * sizeof(void *)); + if (!l->defs) return false; + l->size = new_size; + } + l->defs[l->len - 1] = d; + return true; +} + +void upb_deflist_donaterefs(upb_deflist *l, void *owner) { + assert(l->owned); + for (size_t i = 0; i < l->len; i++) + upb_def_donateref(l->defs[i], l, owner); + l->owned = false; +} + +static upb_def *upb_deflist_last(upb_deflist *l) { + return l->defs[l->len-1]; +} + +// Qualify the defname for all defs starting with offset "start" with "str". +static void upb_deflist_qualify(upb_deflist *l, char *str, int32_t start) { + for (uint32_t i = start; i < l->len; i++) { + upb_def *def = l->defs[i]; + char *name = upb_join(str, upb_def_fullname(def)); + upb_def_setfullname(def, name, NULL); + free(name); + } +} + + +/* upb_descreader ************************************************************/ + +void upb_descreader_init(upb_descreader *r, const upb_handlers *handlers, + upb_status *status) { + UPB_UNUSED(status); + upb_deflist_init(&r->defs); + upb_sink_reset(upb_descreader_input(r), handlers, r); + r->stack_len = 0; + r->name = NULL; + r->default_string = NULL; +} + +void upb_descreader_uninit(upb_descreader *r) { + free(r->name); + upb_deflist_uninit(&r->defs); + free(r->default_string); + while (r->stack_len > 0) { + upb_descreader_frame *f = &r->stack[--r->stack_len]; + free(f->name); + } +} + +upb_def **upb_descreader_getdefs(upb_descreader *r, void *owner, int *n) { + *n = r->defs.len; + upb_deflist_donaterefs(&r->defs, owner); + return r->defs.defs; +} + +upb_sink *upb_descreader_input(upb_descreader *r) { + return &r->sink; +} + +static upb_msgdef *upb_descreader_top(upb_descreader *r) { + assert(r->stack_len > 1); + int index = r->stack[r->stack_len-1].start - 1; + assert(index >= 0); + return upb_downcast_msgdef_mutable(r->defs.defs[index]); +} + +static upb_def *upb_descreader_last(upb_descreader *r) { + return upb_deflist_last(&r->defs); +} + +// Start/end handlers for FileDescriptorProto and DescriptorProto (the two +// entities that have names and can contain sub-definitions. +void upb_descreader_startcontainer(upb_descreader *r) { + upb_descreader_frame *f = &r->stack[r->stack_len++]; + f->start = r->defs.len; + f->name = NULL; +} + +void upb_descreader_endcontainer(upb_descreader *r) { + upb_descreader_frame *f = &r->stack[--r->stack_len]; + upb_deflist_qualify(&r->defs, f->name, f->start); + free(f->name); + f->name = NULL; +} + +void upb_descreader_setscopename(upb_descreader *r, char *str) { + upb_descreader_frame *f = &r->stack[r->stack_len-1]; + free(f->name); + f->name = str; +} + +// Handlers for google.protobuf.FileDescriptorProto. +static bool file_startmsg(void *r, const void *hd) { + UPB_UNUSED(hd); + upb_descreader_startcontainer(r); + return true; +} + +static bool file_endmsg(void *closure, const void *hd, upb_status *status) { + UPB_UNUSED(hd); + UPB_UNUSED(status); + upb_descreader *r = closure; + upb_descreader_endcontainer(r); + return true; +} + +static size_t file_onpackage(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + // XXX: see comment at the top of the file. + upb_descreader_setscopename(r, upb_strndup(buf, n)); + return n; +} + +// Handlers for google.protobuf.EnumValueDescriptorProto. +static bool enumval_startmsg(void *closure, const void *hd) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + r->saw_number = false; + r->saw_name = false; + return true; +} + +static size_t enumval_onname(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + // XXX: see comment at the top of the file. + free(r->name); + r->name = upb_strndup(buf, n); + r->saw_name = true; + return n; +} + +static bool enumval_onnumber(void *closure, const void *hd, int32_t val) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + r->number = val; + r->saw_number = true; + return true; +} + +static bool enumval_endmsg(void *closure, const void *hd, upb_status *status) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + if(!r->saw_number || !r->saw_name) { + upb_status_seterrmsg(status, "Enum value missing name or number."); + return false; + } + upb_enumdef *e = upb_downcast_enumdef_mutable(upb_descreader_last(r)); + upb_enumdef_addval(e, r->name, r->number, status); + free(r->name); + r->name = NULL; + return true; +} + + +// Handlers for google.protobuf.EnumDescriptorProto. +static bool enum_startmsg(void *closure, const void *hd) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_deflist_push(&r->defs, UPB_UPCAST(upb_enumdef_new(&r->defs))); + return true; +} + +static bool enum_endmsg(void *closure, const void *hd, upb_status *status) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_enumdef *e = upb_downcast_enumdef_mutable(upb_descreader_last(r)); + if (upb_def_fullname(upb_descreader_last(r)) == NULL) { + upb_status_seterrmsg(status, "Enum had no name."); + return false; + } + if (upb_enumdef_numvals(e) == 0) { + upb_status_seterrmsg(status, "Enum had no values."); + return false; + } + return true; +} + +static size_t enum_onname(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + // XXX: see comment at the top of the file. + char *fullname = upb_strndup(buf, n); + upb_def_setfullname(upb_descreader_last(r), fullname, NULL); + free(fullname); + return n; +} + +// Handlers for google.protobuf.FieldDescriptorProto +static bool field_startmsg(void *closure, const void *hd) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + r->f = upb_fielddef_new(&r->defs); + free(r->default_string); + r->default_string = NULL; + + // fielddefs default to packed, but descriptors default to non-packed. + upb_fielddef_setpacked(r->f, false); + return true; +} + +// Converts the default value in string "str" into "d". Passes a ref on str. +// Returns true on success. +static bool parse_default(char *str, upb_fielddef *f) { + bool success = true; + char *end; + switch (upb_fielddef_type(f)) { + case UPB_TYPE_INT32: { + long val = strtol(str, &end, 0); + if (val > INT32_MAX || val < INT32_MIN || errno == ERANGE || *end) + success = false; + else + upb_fielddef_setdefaultint32(f, val); + break; + } + case UPB_TYPE_INT64: { + long long val = strtoll(str, &end, 0); + if (val > INT64_MAX || val < INT64_MIN || errno == ERANGE || *end) + success = false; + else + upb_fielddef_setdefaultint64(f, val); + break; + } + case UPB_TYPE_UINT32: { + long val = strtoul(str, &end, 0); + if (val > UINT32_MAX || errno == ERANGE || *end) + success = false; + else + upb_fielddef_setdefaultuint32(f, val); + break; + } + case UPB_TYPE_UINT64: { + unsigned long long val = strtoull(str, &end, 0); + if (val > UINT64_MAX || errno == ERANGE || *end) + success = false; + else + upb_fielddef_setdefaultuint64(f, val); + break; + } + case UPB_TYPE_DOUBLE: { + double val = strtod(str, &end); + if (errno == ERANGE || *end) + success = false; + else + upb_fielddef_setdefaultdouble(f, val); + break; + } + case UPB_TYPE_FLOAT: { + float val = strtof(str, &end); + if (errno == ERANGE || *end) + success = false; + else + upb_fielddef_setdefaultfloat(f, val); + break; + } + case UPB_TYPE_BOOL: { + if (strcmp(str, "false") == 0) + upb_fielddef_setdefaultbool(f, false); + else if (strcmp(str, "true") == 0) + upb_fielddef_setdefaultbool(f, true); + else + success = false; + break; + } + default: abort(); + } + return success; +} + +static bool field_endmsg(void *closure, const void *hd, upb_status *status) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_fielddef *f = r->f; + // TODO: verify that all required fields were present. + assert(upb_fielddef_number(f) != 0); + assert(upb_fielddef_name(f) != NULL); + assert((upb_fielddef_subdefname(f) != NULL) == upb_fielddef_hassubdef(f)); + + if (r->default_string) { + if (upb_fielddef_issubmsg(f)) { + upb_status_seterrmsg(status, "Submessages cannot have defaults."); + return false; + } + if (upb_fielddef_isstring(f) || upb_fielddef_type(f) == UPB_TYPE_ENUM) { + upb_fielddef_setdefaultcstr(f, r->default_string, NULL); + } else { + if (r->default_string && !parse_default(r->default_string, f)) { + // We don't worry too much about giving a great error message since the + // compiler should have ensured this was correct. + upb_status_seterrmsg(status, "Error converting default value."); + return false; + } + } + } + return true; +} + +static bool field_onlazy(void *closure, const void *hd, bool val) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_fielddef_setlazy(r->f, val); + return true; +} + +static bool field_onpacked(void *closure, const void *hd, bool val) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_fielddef_setpacked(r->f, val); + return true; +} + +static bool field_ontype(void *closure, const void *hd, int32_t val) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_fielddef_setdescriptortype(r->f, val); + return true; +} + +static bool field_onlabel(void *closure, const void *hd, int32_t val) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_fielddef_setlabel(r->f, val); + return true; +} + +static bool field_onnumber(void *closure, const void *hd, int32_t val) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + bool ok = upb_fielddef_setnumber(r->f, val, NULL); + UPB_ASSERT_VAR(ok, ok); + return true; +} + +static size_t field_onname(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + // XXX: see comment at the top of the file. + char *name = upb_strndup(buf, n); + upb_fielddef_setname(r->f, name, NULL); + free(name); + return n; +} + +static size_t field_ontypename(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + // XXX: see comment at the top of the file. + char *name = upb_strndup(buf, n); + upb_fielddef_setsubdefname(r->f, name, NULL); + free(name); + return n; +} + +static size_t field_onextendee(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + // XXX: see comment at the top of the file. + char *name = upb_strndup(buf, n); + upb_fielddef_setcontainingtypename(r->f, name, NULL); + free(name); + return n; +} + +static size_t field_ondefaultval(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + // Have to convert from string to the correct type, but we might not know the + // type yet, so we save it as a string until the end of the field. + // XXX: see comment at the top of the file. + free(r->default_string); + r->default_string = upb_strndup(buf, n); + return n; +} + +// Handlers for google.protobuf.DescriptorProto (representing a message). +static bool msg_startmsg(void *closure, const void *hd) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_deflist_push(&r->defs, UPB_UPCAST(upb_msgdef_new(&r->defs))); + upb_descreader_startcontainer(r); + return true; +} + +static bool msg_endmsg(void *closure, const void *hd, upb_status *status) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_msgdef *m = upb_descreader_top(r); + if(!upb_def_fullname(UPB_UPCAST(m))) { + upb_status_seterrmsg(status, "Encountered message with no name."); + return false; + } + upb_descreader_endcontainer(r); + return true; +} + +static size_t msg_onname(void *closure, const void *hd, const char *buf, + size_t n, const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_descreader *r = closure; + upb_msgdef *m = upb_descreader_top(r); + // XXX: see comment at the top of the file. + char *name = upb_strndup(buf, n); + upb_def_setfullname(UPB_UPCAST(m), name, NULL); + upb_descreader_setscopename(r, name); // Passes ownership of name. + return n; +} + +static bool msg_onendfield(void *closure, const void *hd) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + upb_msgdef *m = upb_descreader_top(r); + upb_msgdef_addfield(m, r->f, &r->defs, NULL); + r->f = NULL; + return true; +} + +static bool pushextension(void *closure, const void *hd) { + UPB_UNUSED(hd); + upb_descreader *r = closure; + assert(upb_fielddef_containingtypename(r->f)); + upb_fielddef_setisextension(r->f, true); + upb_deflist_push(&r->defs, UPB_UPCAST(r->f)); + r->f = NULL; + return true; +} + +#define D(name) upbdefs_google_protobuf_ ## name(s) + +static void reghandlers(const void *closure, upb_handlers *h) { + const upb_symtab *s = closure; + const upb_msgdef *m = upb_handlers_msgdef(h); + + if (m == D(DescriptorProto)) { + upb_handlers_setstartmsg(h, &msg_startmsg, NULL); + upb_handlers_setendmsg(h, &msg_endmsg, NULL); + upb_handlers_setstring(h, D(DescriptorProto_name), &msg_onname, NULL); + upb_handlers_setendsubmsg(h, D(DescriptorProto_field), &msg_onendfield, + NULL); + upb_handlers_setendsubmsg(h, D(DescriptorProto_extension), &pushextension, + NULL); + } else if (m == D(FileDescriptorProto)) { + upb_handlers_setstartmsg(h, &file_startmsg, NULL); + upb_handlers_setendmsg(h, &file_endmsg, NULL); + upb_handlers_setstring(h, D(FileDescriptorProto_package), &file_onpackage, + NULL); + upb_handlers_setendsubmsg(h, D(FileDescriptorProto_extension), &pushextension, + NULL); + } else if (m == D(EnumValueDescriptorProto)) { + upb_handlers_setstartmsg(h, &enumval_startmsg, NULL); + upb_handlers_setendmsg(h, &enumval_endmsg, NULL); + upb_handlers_setstring(h, D(EnumValueDescriptorProto_name), &enumval_onname, NULL); + upb_handlers_setint32(h, D(EnumValueDescriptorProto_number), &enumval_onnumber, + NULL); + } else if (m == D(EnumDescriptorProto)) { + upb_handlers_setstartmsg(h, &enum_startmsg, NULL); + upb_handlers_setendmsg(h, &enum_endmsg, NULL); + upb_handlers_setstring(h, D(EnumDescriptorProto_name), &enum_onname, NULL); + } else if (m == D(FieldDescriptorProto)) { + upb_handlers_setstartmsg(h, &field_startmsg, NULL); + upb_handlers_setendmsg(h, &field_endmsg, NULL); + upb_handlers_setint32(h, D(FieldDescriptorProto_type), &field_ontype, + NULL); + upb_handlers_setint32(h, D(FieldDescriptorProto_label), &field_onlabel, + NULL); + upb_handlers_setint32(h, D(FieldDescriptorProto_number), &field_onnumber, + NULL); + upb_handlers_setstring(h, D(FieldDescriptorProto_name), &field_onname, + NULL); + upb_handlers_setstring(h, D(FieldDescriptorProto_type_name), + &field_ontypename, NULL); + upb_handlers_setstring(h, D(FieldDescriptorProto_extendee), + &field_onextendee, NULL); + upb_handlers_setstring(h, D(FieldDescriptorProto_default_value), + &field_ondefaultval, NULL); + } else if (m == D(FieldOptions)) { + upb_handlers_setbool(h, D(FieldOptions_lazy), &field_onlazy, NULL); + upb_handlers_setbool(h, D(FieldOptions_packed), &field_onpacked, NULL); + } +} + +#undef D + +const upb_handlers *upb_descreader_newhandlers(const void *owner) { + const upb_symtab *s = upbdefs_google_protobuf_descriptor(&s); + const upb_handlers *h = upb_handlers_newfrozen( + upbdefs_google_protobuf_FileDescriptorSet(s), owner, reghandlers, s); + upb_symtab_unref(s, &s); + return h; +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2013 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Code to compile a upb::Handlers into bytecode for decoding a protobuf + * according to that specific schema and destination handlers. + * + * Compiling to bytecode is always the first step. If we are using the + * interpreted decoder we leave it as bytecode and interpret that. If we are + * using a JIT decoder we use a code generator to turn the bytecode into native + * code, LLVM IR, etc. + * + * Bytecode definition is in decoder.int.h. + */ + +#include <stdarg.h> + +#ifdef UPB_DUMP_BYTECODE +#include <stdio.h> +#endif + +#define MAXLABEL 5 +#define EMPTYLABEL -1 + +/* mgroup *********************************************************************/ + +static void freegroup(upb_refcounted *r) { + mgroup *g = (mgroup*)r; + upb_inttable_uninit(&g->methods); +#ifdef UPB_USE_JIT_X64 + upb_pbdecoder_freejit(g); +#endif + free(g->bytecode); + free(g); +} + +static void visitgroup(const upb_refcounted *r, upb_refcounted_visit *visit, + void *closure) { + const mgroup *g = (const mgroup*)r; + upb_inttable_iter i; + upb_inttable_begin(&i, &g->methods); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + upb_pbdecodermethod *method = upb_value_getptr(upb_inttable_iter_value(&i)); + visit(r, UPB_UPCAST(method), closure); + } +} + +mgroup *newgroup(const void *owner) { + mgroup *g = malloc(sizeof(*g)); + static const struct upb_refcounted_vtbl vtbl = {visitgroup, freegroup}; + upb_refcounted_init(UPB_UPCAST(g), &vtbl, owner); + upb_inttable_init(&g->methods, UPB_CTYPE_PTR); + g->bytecode = NULL; + g->bytecode_end = NULL; + return g; +} + + +/* upb_pbdecodermethod ********************************************************/ + +static void freemethod(upb_refcounted *r) { + upb_pbdecodermethod *method = (upb_pbdecodermethod*)r; + upb_byteshandler_uninit(&method->input_handler_); + + if (method->dest_handlers_) { + upb_handlers_unref(method->dest_handlers_, method); + } + + upb_inttable_uninit(&method->dispatch); + free(method); +} + +static void visitmethod(const upb_refcounted *r, upb_refcounted_visit *visit, + void *closure) { + const upb_pbdecodermethod *m = (const upb_pbdecodermethod*)r; + visit(r, m->group, closure); +} + +static upb_pbdecodermethod *newmethod(const upb_handlers *dest_handlers, + mgroup *group) { + static const struct upb_refcounted_vtbl vtbl = {visitmethod, freemethod}; + upb_pbdecodermethod *ret = malloc(sizeof(*ret)); + upb_refcounted_init(UPB_UPCAST(ret), &vtbl, &ret); + upb_byteshandler_init(&ret->input_handler_); + + // The method references the group and vice-versa, in a circular reference. + upb_ref2(ret, group); + upb_ref2(group, ret); + upb_inttable_insertptr(&group->methods, dest_handlers, upb_value_ptr(ret)); + upb_refcounted_unref(UPB_UPCAST(ret), &ret); + + ret->group = UPB_UPCAST(group); + ret->dest_handlers_ = dest_handlers; + ret->is_native_ = false; // If we JIT, it will update this later. + upb_inttable_init(&ret->dispatch, UPB_CTYPE_UINT64); + + if (ret->dest_handlers_) { + upb_handlers_ref(ret->dest_handlers_, ret); + } + return ret; +} + +void upb_pbdecodermethod_ref(const upb_pbdecodermethod *m, const void *owner) { + upb_refcounted_ref(UPB_UPCAST(m), owner); +} + +void upb_pbdecodermethod_unref(const upb_pbdecodermethod *m, + const void *owner) { + upb_refcounted_unref(UPB_UPCAST(m), owner); +} + +void upb_pbdecodermethod_donateref(const upb_pbdecodermethod *m, + const void *from, const void *to) { + upb_refcounted_donateref(UPB_UPCAST(m), from, to); +} + +void upb_pbdecodermethod_checkref(const upb_pbdecodermethod *m, + const void *owner) { + upb_refcounted_checkref(UPB_UPCAST(m), owner); +} + +const upb_handlers *upb_pbdecodermethod_desthandlers( + const upb_pbdecodermethod *m) { + return m->dest_handlers_; +} + +const upb_byteshandler *upb_pbdecodermethod_inputhandler( + const upb_pbdecodermethod *m) { + return &m->input_handler_; +} + +bool upb_pbdecodermethod_isnative(const upb_pbdecodermethod *m) { + return m->is_native_; +} + +const upb_pbdecodermethod *upb_pbdecodermethod_new( + const upb_pbdecodermethodopts *opts, const void *owner) { + upb_pbcodecache cache; + upb_pbcodecache_init(&cache); + const upb_pbdecodermethod *ret = + upb_pbcodecache_getdecodermethod(&cache, opts); + upb_pbdecodermethod_ref(ret, owner); + upb_pbcodecache_uninit(&cache); + return ret; +} + + +/* bytecode compiler **********************************************************/ + +// Data used only at compilation time. +typedef struct { + mgroup *group; + + uint32_t *pc; + int fwd_labels[MAXLABEL]; + int back_labels[MAXLABEL]; + + // For fields marked "lazy", parse them lazily or eagerly? + bool lazy; +} compiler; + +static compiler *newcompiler(mgroup *group, bool lazy) { + compiler *ret = malloc(sizeof(*ret)); + ret->group = group; + ret->lazy = lazy; + for (int i = 0; i < MAXLABEL; i++) { + ret->fwd_labels[i] = EMPTYLABEL; + ret->back_labels[i] = EMPTYLABEL; + } + return ret; +} + +static void freecompiler(compiler *c) { + free(c); +} + +const size_t ptr_words = sizeof(void*) / sizeof(uint32_t); + +// How many words an instruction is. +static int instruction_len(uint32_t instr) { + switch (getop(instr)) { + case OP_SETDISPATCH: return 1 + ptr_words; + case OP_TAGN: return 3; + case OP_SETBIGGROUPNUM: return 2; + default: return 1; + } +} + +bool op_has_longofs(int32_t instruction) { + switch (getop(instruction)) { + case OP_CALL: + case OP_BRANCH: + case OP_CHECKDELIM: + return true; + // The "tag" instructions only have 8 bytes available for the jump target, + // but that is ok because these opcodes only require short jumps. + case OP_TAG1: + case OP_TAG2: + case OP_TAGN: + return false; + default: + assert(false); + return false; + } +} + +static int32_t getofs(uint32_t instruction) { + if (op_has_longofs(instruction)) { + return (int32_t)instruction >> 8; + } else { + return (int8_t)(instruction >> 8); + } +} + +static void setofs(uint32_t *instruction, int32_t ofs) { + if (op_has_longofs(*instruction)) { + *instruction = getop(*instruction) | ofs << 8; + } else { + *instruction = (*instruction & ~0xff00) | ((ofs & 0xff) << 8); + } + assert(getofs(*instruction) == ofs); // Would fail in cases of overflow. +} + +static uint32_t pcofs(compiler *c) { return c->pc - c->group->bytecode; } + +// Defines a local label at the current PC location. All previous forward +// references are updated to point to this location. The location is noted +// for any future backward references. +static void label(compiler *c, unsigned int label) { + assert(label < MAXLABEL); + int val = c->fwd_labels[label]; + uint32_t *codep = (val == EMPTYLABEL) ? NULL : c->group->bytecode + val; + while (codep) { + int ofs = getofs(*codep); + setofs(codep, c->pc - codep - instruction_len(*codep)); + codep = ofs ? codep + ofs : NULL; + } + c->fwd_labels[label] = EMPTYLABEL; + c->back_labels[label] = pcofs(c); +} + +// Creates a reference to a numbered label; either a forward reference +// (positive arg) or backward reference (negative arg). For forward references +// the value returned now is actually a "next" pointer into a linked list of all +// instructions that use this label and will be patched later when the label is +// defined with label(). +// +// The returned value is the offset that should be written into the instruction. +static int32_t labelref(compiler *c, int label) { + assert(label < MAXLABEL); + if (label == LABEL_DISPATCH) { + // No resolving required. + return 0; + } else if (label < 0) { + // Backward local label. Relative to the next instruction. + uint32_t from = (c->pc + 1) - c->group->bytecode; + return c->back_labels[-label] - from; + } else { + // Forward local label: prepend to (possibly-empty) linked list. + int *lptr = &c->fwd_labels[label]; + int32_t ret = (*lptr == EMPTYLABEL) ? 0 : *lptr - pcofs(c); + *lptr = pcofs(c); + return ret; + } +} + +static void put32(compiler *c, uint32_t v) { + mgroup *g = c->group; + if (c->pc == g->bytecode_end) { + int ofs = pcofs(c); + size_t oldsize = g->bytecode_end - g->bytecode; + size_t newsize = UPB_MAX(oldsize * 2, 64); + // TODO(haberman): handle OOM. + g->bytecode = realloc(g->bytecode, newsize * sizeof(uint32_t)); + g->bytecode_end = g->bytecode + newsize; + c->pc = g->bytecode + ofs; + } + *c->pc++ = v; +} + +static void putop(compiler *c, opcode op, ...) { + va_list ap; + va_start(ap, op); + + switch (op) { + case OP_SETDISPATCH: { + uintptr_t ptr = (uintptr_t)va_arg(ap, void*); + put32(c, OP_SETDISPATCH); + put32(c, ptr); + if (sizeof(uintptr_t) > sizeof(uint32_t)) + put32(c, (uint64_t)ptr >> 32); + break; + } + case OP_STARTMSG: + case OP_ENDMSG: + case OP_PUSHLENDELIM: + case OP_POP: + case OP_SETDELIM: + case OP_HALT: + case OP_RET: + put32(c, op); + break; + case OP_PARSE_DOUBLE: + case OP_PARSE_FLOAT: + case OP_PARSE_INT64: + case OP_PARSE_UINT64: + case OP_PARSE_INT32: + case OP_PARSE_FIXED64: + case OP_PARSE_FIXED32: + case OP_PARSE_BOOL: + case OP_PARSE_UINT32: + case OP_PARSE_SFIXED32: + case OP_PARSE_SFIXED64: + case OP_PARSE_SINT32: + case OP_PARSE_SINT64: + case OP_STARTSEQ: + case OP_ENDSEQ: + case OP_STARTSUBMSG: + case OP_ENDSUBMSG: + case OP_STARTSTR: + case OP_STRING: + case OP_ENDSTR: + case OP_PUSHTAGDELIM: + put32(c, op | va_arg(ap, upb_selector_t) << 8); + break; + case OP_SETBIGGROUPNUM: + put32(c, op); + put32(c, va_arg(ap, int)); + break; + case OP_CALL: { + const upb_pbdecodermethod *method = va_arg(ap, upb_pbdecodermethod *); + put32(c, op | (method->code_base.ofs - (pcofs(c) + 1)) << 8); + break; + } + case OP_CHECKDELIM: + case OP_BRANCH: { + uint32_t instruction = op; + int label = va_arg(ap, int); + setofs(&instruction, labelref(c, label)); + put32(c, instruction); + break; + } + case OP_TAG1: + case OP_TAG2: { + int label = va_arg(ap, int); + uint64_t tag = va_arg(ap, uint64_t); + uint32_t instruction = op | (tag << 16); + assert(tag <= 0xffff); + setofs(&instruction, labelref(c, label)); + put32(c, instruction); + break; + } + case OP_TAGN: { + int label = va_arg(ap, int); + uint64_t tag = va_arg(ap, uint64_t); + uint32_t instruction = op | (upb_value_size(tag) << 16); + setofs(&instruction, labelref(c, label)); + put32(c, instruction); + put32(c, tag); + put32(c, tag >> 32); + break; + } + } + + va_end(ap); +} + +#if defined(UPB_USE_JIT_X64) || defined(UPB_DUMP_BYTECODE) + +const char *upb_pbdecoder_getopname(unsigned int op) { +#define OP(op) [OP_ ## op] = "OP_" #op +#define T(op) OP(PARSE_##op) + static const char *names[] = { + "<no opcode>", + T(DOUBLE), T(FLOAT), T(INT64), T(UINT64), T(INT32), T(FIXED64), T(FIXED32), + T(BOOL), T(UINT32), T(SFIXED32), T(SFIXED64), T(SINT32), T(SINT64), + OP(STARTMSG), OP(ENDMSG), OP(STARTSEQ), OP(ENDSEQ), OP(STARTSUBMSG), + OP(ENDSUBMSG), OP(STARTSTR), OP(STRING), OP(ENDSTR), OP(CALL), OP(RET), + OP(PUSHLENDELIM), OP(PUSHTAGDELIM), OP(SETDELIM), OP(CHECKDELIM), + OP(BRANCH), OP(TAG1), OP(TAG2), OP(TAGN), OP(SETDISPATCH), OP(POP), + OP(SETBIGGROUPNUM), OP(HALT), + }; + return op > OP_HALT ? names[0] : names[op]; +#undef OP +#undef T +} + +#endif + +#ifdef UPB_DUMP_BYTECODE + +static void dumpbc(uint32_t *p, uint32_t *end, FILE *f) { + + uint32_t *begin = p; + + while (p < end) { + fprintf(f, "%p %8tx", p, p - begin); + uint32_t instr = *p++; + uint8_t op = getop(instr); + fprintf(f, " %s", upb_pbdecoder_getopname(op)); + switch ((opcode)op) { + case OP_SETDISPATCH: { + const upb_inttable *dispatch; + memcpy(&dispatch, p, sizeof(void*)); + p += ptr_words; + const upb_pbdecodermethod *method = + (void *)((char *)dispatch - + offsetof(upb_pbdecodermethod, dispatch)); + fprintf(f, " %s", upb_msgdef_fullname( + upb_handlers_msgdef(method->dest_handlers_))); + break; + } + case OP_STARTMSG: + case OP_ENDMSG: + case OP_PUSHLENDELIM: + case OP_POP: + case OP_SETDELIM: + case OP_HALT: + case OP_RET: + break; + case OP_PARSE_DOUBLE: + case OP_PARSE_FLOAT: + case OP_PARSE_INT64: + case OP_PARSE_UINT64: + case OP_PARSE_INT32: + case OP_PARSE_FIXED64: + case OP_PARSE_FIXED32: + case OP_PARSE_BOOL: + case OP_PARSE_UINT32: + case OP_PARSE_SFIXED32: + case OP_PARSE_SFIXED64: + case OP_PARSE_SINT32: + case OP_PARSE_SINT64: + case OP_STARTSEQ: + case OP_ENDSEQ: + case OP_STARTSUBMSG: + case OP_ENDSUBMSG: + case OP_STARTSTR: + case OP_STRING: + case OP_ENDSTR: + case OP_PUSHTAGDELIM: + fprintf(f, " %d", instr >> 8); + break; + case OP_SETBIGGROUPNUM: + fprintf(f, " %d", *p++); + break; + case OP_CHECKDELIM: + case OP_CALL: + case OP_BRANCH: + fprintf(f, " =>0x%tx", p + getofs(instr) - begin); + break; + case OP_TAG1: + case OP_TAG2: { + fprintf(f, " tag:0x%x", instr >> 16); + if (getofs(instr)) { + fprintf(f, " =>0x%tx", p + getofs(instr) - begin); + } + break; + } + case OP_TAGN: { + uint64_t tag = *p++; + tag |= (uint64_t)*p++ << 32; + fprintf(f, " tag:0x%llx", (long long)tag); + fprintf(f, " n:%d", instr >> 16); + if (getofs(instr)) { + fprintf(f, " =>0x%tx", p + getofs(instr) - begin); + } + break; + } + } + fputs("\n", f); + } +} + +#endif + +static uint64_t get_encoded_tag(const upb_fielddef *f, int wire_type) { + uint32_t tag = (upb_fielddef_number(f) << 3) | wire_type; + uint64_t encoded_tag = upb_vencode32(tag); + // No tag should be greater than 5 bytes. + assert(encoded_tag <= 0xffffffffff); + return encoded_tag; +} + +static void putchecktag(compiler *c, const upb_fielddef *f, + int wire_type, int dest) { + uint64_t tag = get_encoded_tag(f, wire_type); + switch (upb_value_size(tag)) { + case 1: + putop(c, OP_TAG1, dest, tag); + break; + case 2: + putop(c, OP_TAG2, dest, tag); + break; + default: + putop(c, OP_TAGN, dest, tag); + break; + } +} + +static upb_selector_t getsel(const upb_fielddef *f, upb_handlertype_t type) { + upb_selector_t selector; + bool ok = upb_handlers_getselector(f, type, &selector); + UPB_ASSERT_VAR(ok, ok); + return selector; +} + +// Takes an existing, primary dispatch table entry and repacks it with a +// different alternate wire type. Called when we are inserting a secondary +// dispatch table entry for an alternate wire type. +static uint64_t repack(uint64_t dispatch, int new_wt2) { + uint64_t ofs; + uint8_t wt1; + uint8_t old_wt2; + upb_pbdecoder_unpackdispatch(dispatch, &ofs, &wt1, &old_wt2); + assert(old_wt2 == NO_WIRE_TYPE); // wt2 should not be set yet. + return upb_pbdecoder_packdispatch(ofs, wt1, new_wt2); +} + +// Marks the current bytecode position as the dispatch target for this message, +// field, and wire type. +static void dispatchtarget(compiler *c, upb_pbdecodermethod *method, + const upb_fielddef *f, int wire_type) { + // Offset is relative to msg base. + uint64_t ofs = pcofs(c) - method->code_base.ofs; + uint32_t fn = upb_fielddef_number(f); + upb_inttable *d = &method->dispatch; + upb_value v; + if (upb_inttable_remove(d, fn, &v)) { + // TODO: prioritize based on packed setting in .proto file. + uint64_t repacked = repack(upb_value_getuint64(v), wire_type); + upb_inttable_insert(d, fn, upb_value_uint64(repacked)); + upb_inttable_insert(d, fn + UPB_MAX_FIELDNUMBER, upb_value_uint64(ofs)); + } else { + uint64_t val = upb_pbdecoder_packdispatch(ofs, wire_type, NO_WIRE_TYPE); + upb_inttable_insert(d, fn, upb_value_uint64(val)); + } +} + +static void putpush(compiler *c, const upb_fielddef *f) { + if (upb_fielddef_descriptortype(f) == UPB_DESCRIPTOR_TYPE_MESSAGE) { + putop(c, OP_PUSHLENDELIM); + } else { + uint32_t fn = upb_fielddef_number(f); + if (fn >= 1 << 24) { + putop(c, OP_PUSHTAGDELIM, 0); + putop(c, OP_SETBIGGROUPNUM, fn); + } else { + putop(c, OP_PUSHTAGDELIM, fn); + } + } +} + +static upb_pbdecodermethod *find_submethod(const compiler *c, + const upb_pbdecodermethod *method, + const upb_fielddef *f) { + const upb_handlers *sub = + upb_handlers_getsubhandlers(method->dest_handlers_, f); + upb_value v; + return upb_inttable_lookupptr(&c->group->methods, sub, &v) + ? upb_value_getptr(v) + : NULL; +} + +static void putsel(compiler *c, opcode op, upb_selector_t sel, + const upb_handlers *h) { + if (upb_handlers_gethandler(h, sel)) { + putop(c, op, sel); + } +} + +// Puts an opcode to call a callback, but only if a callback actually exists for +// this field and handler type. +static void maybeput(compiler *c, opcode op, const upb_handlers *h, + const upb_fielddef *f, upb_handlertype_t type) { + putsel(c, op, getsel(f, type), h); +} + +static bool haslazyhandlers(const upb_handlers *h, const upb_fielddef *f) { + if (!upb_fielddef_lazy(f)) + return false; + + return upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_STARTSTR)) || + upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_STRING)) || + upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_ENDSTR)); +} + + +/* bytecode compiler code generation ******************************************/ + +// Symbolic names for our local labels. +#define LABEL_LOOPSTART 1 // Top of a repeated field loop. +#define LABEL_LOOPBREAK 2 // To jump out of a repeated loop +#define LABEL_FIELD 3 // Jump backward to find the most recent field. +#define LABEL_ENDMSG 4 // To reach the OP_ENDMSG instr for this msg. + +// Generates bytecode to parse a single non-lazy message field. +static void generate_msgfield(compiler *c, const upb_fielddef *f, + upb_pbdecodermethod *method) { + const upb_handlers *h = upb_pbdecodermethod_desthandlers(method); + const upb_pbdecodermethod *sub_m = find_submethod(c, method, f); + + if (!sub_m) { + // Don't emit any code for this field at all; it will be parsed as an + // unknown field. + return; + } + + label(c, LABEL_FIELD); + + int wire_type = + (upb_fielddef_descriptortype(f) == UPB_DESCRIPTOR_TYPE_MESSAGE) + ? UPB_WIRE_TYPE_DELIMITED + : UPB_WIRE_TYPE_START_GROUP; + + if (upb_fielddef_isseq(f)) { + putop(c, OP_CHECKDELIM, LABEL_ENDMSG); + putchecktag(c, f, wire_type, LABEL_DISPATCH); + dispatchtarget(c, method, f, wire_type); + putop(c, OP_PUSHTAGDELIM, 0); + putop(c, OP_STARTSEQ, getsel(f, UPB_HANDLER_STARTSEQ)); + label(c, LABEL_LOOPSTART); + putpush(c, f); + putop(c, OP_STARTSUBMSG, getsel(f, UPB_HANDLER_STARTSUBMSG)); + putop(c, OP_CALL, sub_m); + putop(c, OP_POP); + maybeput(c, OP_ENDSUBMSG, h, f, UPB_HANDLER_ENDSUBMSG); + if (wire_type == UPB_WIRE_TYPE_DELIMITED) { + putop(c, OP_SETDELIM); + } + putop(c, OP_CHECKDELIM, LABEL_LOOPBREAK); + putchecktag(c, f, wire_type, LABEL_LOOPBREAK); + putop(c, OP_BRANCH, -LABEL_LOOPSTART); + label(c, LABEL_LOOPBREAK); + putop(c, OP_POP); + maybeput(c, OP_ENDSEQ, h, f, UPB_HANDLER_ENDSEQ); + } else { + putop(c, OP_CHECKDELIM, LABEL_ENDMSG); + putchecktag(c, f, wire_type, LABEL_DISPATCH); + dispatchtarget(c, method, f, wire_type); + putpush(c, f); + putop(c, OP_STARTSUBMSG, getsel(f, UPB_HANDLER_STARTSUBMSG)); + putop(c, OP_CALL, sub_m); + putop(c, OP_POP); + maybeput(c, OP_ENDSUBMSG, h, f, UPB_HANDLER_ENDSUBMSG); + if (wire_type == UPB_WIRE_TYPE_DELIMITED) { + putop(c, OP_SETDELIM); + } + } +} + +// Generates bytecode to parse a single string or lazy submessage field. +static void generate_delimfield(compiler *c, const upb_fielddef *f, + upb_pbdecodermethod *method) { + const upb_handlers *h = upb_pbdecodermethod_desthandlers(method); + + label(c, LABEL_FIELD); + if (upb_fielddef_isseq(f)) { + putop(c, OP_CHECKDELIM, LABEL_ENDMSG); + putchecktag(c, f, UPB_WIRE_TYPE_DELIMITED, LABEL_DISPATCH); + dispatchtarget(c, method, f, UPB_WIRE_TYPE_DELIMITED); + putop(c, OP_PUSHTAGDELIM, 0); + putop(c, OP_STARTSEQ, getsel(f, UPB_HANDLER_STARTSEQ)); + label(c, LABEL_LOOPSTART); + putop(c, OP_PUSHLENDELIM); + putop(c, OP_STARTSTR, getsel(f, UPB_HANDLER_STARTSTR)); + // Need to emit even if no handler to skip past the string. + putop(c, OP_STRING, getsel(f, UPB_HANDLER_STRING)); + putop(c, OP_POP); + maybeput(c, OP_ENDSTR, h, f, UPB_HANDLER_ENDSTR); + putop(c, OP_SETDELIM); + putop(c, OP_CHECKDELIM, LABEL_LOOPBREAK); + putchecktag(c, f, UPB_WIRE_TYPE_DELIMITED, LABEL_LOOPBREAK); + putop(c, OP_BRANCH, -LABEL_LOOPSTART); + label(c, LABEL_LOOPBREAK); + putop(c, OP_POP); + maybeput(c, OP_ENDSEQ, h, f, UPB_HANDLER_ENDSEQ); + } else { + putop(c, OP_CHECKDELIM, LABEL_ENDMSG); + putchecktag(c, f, UPB_WIRE_TYPE_DELIMITED, LABEL_DISPATCH); + dispatchtarget(c, method, f, UPB_WIRE_TYPE_DELIMITED); + putop(c, OP_PUSHLENDELIM); + putop(c, OP_STARTSTR, getsel(f, UPB_HANDLER_STARTSTR)); + putop(c, OP_STRING, getsel(f, UPB_HANDLER_STRING)); + putop(c, OP_POP); + maybeput(c, OP_ENDSTR, h, f, UPB_HANDLER_ENDSTR); + putop(c, OP_SETDELIM); + } +} + +// Generates bytecode to parse a single primitive field. +static void generate_primitivefield(compiler *c, const upb_fielddef *f, + upb_pbdecodermethod *method) { + label(c, LABEL_FIELD); + + const upb_handlers *h = upb_pbdecodermethod_desthandlers(method); + upb_descriptortype_t descriptor_type = upb_fielddef_descriptortype(f); + + // From a decoding perspective, ENUM is the same as INT32. + if (descriptor_type == UPB_DESCRIPTOR_TYPE_ENUM) + descriptor_type = UPB_DESCRIPTOR_TYPE_INT32; + + opcode parse_type = (opcode)descriptor_type; + + // TODO(haberman): generate packed or non-packed first depending on "packed" + // setting in the fielddef. This will favor (in speed) whichever was + // specified. + + assert((int)parse_type >= 0 && parse_type <= OP_MAX); + upb_selector_t sel = getsel(f, upb_handlers_getprimitivehandlertype(f)); + int wire_type = upb_pb_native_wire_types[upb_fielddef_descriptortype(f)]; + if (upb_fielddef_isseq(f)) { + putop(c, OP_CHECKDELIM, LABEL_ENDMSG); + putchecktag(c, f, UPB_WIRE_TYPE_DELIMITED, LABEL_DISPATCH); + dispatchtarget(c, method, f, UPB_WIRE_TYPE_DELIMITED); + putop(c, OP_PUSHLENDELIM); + putop(c, OP_STARTSEQ, getsel(f, UPB_HANDLER_STARTSEQ)); // Packed + label(c, LABEL_LOOPSTART); + putop(c, parse_type, sel); + putop(c, OP_CHECKDELIM, LABEL_LOOPBREAK); + putop(c, OP_BRANCH, -LABEL_LOOPSTART); + dispatchtarget(c, method, f, wire_type); + putop(c, OP_PUSHTAGDELIM, 0); + putop(c, OP_STARTSEQ, getsel(f, UPB_HANDLER_STARTSEQ)); // Non-packed + label(c, LABEL_LOOPSTART); + putop(c, parse_type, sel); + putop(c, OP_CHECKDELIM, LABEL_LOOPBREAK); + putchecktag(c, f, wire_type, LABEL_LOOPBREAK); + putop(c, OP_BRANCH, -LABEL_LOOPSTART); + label(c, LABEL_LOOPBREAK); + putop(c, OP_POP); // Packed and non-packed join. + maybeput(c, OP_ENDSEQ, h, f, UPB_HANDLER_ENDSEQ); + putop(c, OP_SETDELIM); // Could remove for non-packed by dup ENDSEQ. + } else { + putop(c, OP_CHECKDELIM, LABEL_ENDMSG); + putchecktag(c, f, wire_type, LABEL_DISPATCH); + dispatchtarget(c, method, f, wire_type); + putop(c, parse_type, sel); + } +} + +// Adds bytecode for parsing the given message to the given decoderplan, +// while adding all dispatch targets to this message's dispatch table. +static void compile_method(compiler *c, upb_pbdecodermethod *method) { + assert(method); + + // Clear all entries in the dispatch table. + upb_inttable_uninit(&method->dispatch); + upb_inttable_init(&method->dispatch, UPB_CTYPE_UINT64); + + const upb_handlers *h = upb_pbdecodermethod_desthandlers(method); + const upb_msgdef *md = upb_handlers_msgdef(h); + + method->code_base.ofs = pcofs(c); + putop(c, OP_SETDISPATCH, &method->dispatch); + putsel(c, OP_STARTMSG, UPB_STARTMSG_SELECTOR, h); + label(c, LABEL_FIELD); + upb_msg_iter i; + for(upb_msg_begin(&i, md); !upb_msg_done(&i); upb_msg_next(&i)) { + const upb_fielddef *f = upb_msg_iter_field(&i); + upb_fieldtype_t type = upb_fielddef_type(f); + + if (type == UPB_TYPE_MESSAGE && !(haslazyhandlers(h, f) && c->lazy)) { + generate_msgfield(c, f, method); + } else if (type == UPB_TYPE_STRING || type == UPB_TYPE_BYTES || + type == UPB_TYPE_MESSAGE) { + generate_delimfield(c, f, method); + } else { + generate_primitivefield(c, f, method); + } + } + + // For now we just loop back to the last field of the message (or if none, + // the DISPATCH opcode for the message. + putop(c, OP_BRANCH, -LABEL_FIELD); + + // Insert both a label and a dispatch table entry for this end-of-msg. + label(c, LABEL_ENDMSG); + upb_value val = upb_value_uint64(pcofs(c) - method->code_base.ofs); + upb_inttable_insert(&method->dispatch, DISPATCH_ENDMSG, val); + + putsel(c, OP_ENDMSG, UPB_ENDMSG_SELECTOR, h); + putop(c, OP_RET); + + upb_inttable_compact(&method->dispatch); +} + +// Populate "methods" with new upb_pbdecodermethod objects reachable from "h". +// Returns the method for these handlers. +// +// Generates a new method for every destination handlers reachable from "h". +static void find_methods(compiler *c, const upb_handlers *h) { + upb_value v; + if (upb_inttable_lookupptr(&c->group->methods, h, &v)) + return; + newmethod(h, c->group); + + // Find submethods. + upb_msg_iter i; + const upb_msgdef *md = upb_handlers_msgdef(h); + for(upb_msg_begin(&i, md); !upb_msg_done(&i); upb_msg_next(&i)) { + const upb_fielddef *f = upb_msg_iter_field(&i); + const upb_handlers *sub_h; + if (upb_fielddef_type(f) == UPB_TYPE_MESSAGE && + (sub_h = upb_handlers_getsubhandlers(h, f)) != NULL) { + // We only generate a decoder method for submessages with handlers. + // Others will be parsed as unknown fields. + find_methods(c, sub_h); + } + } +} + +// (Re-)compile bytecode for all messages in "msgs." +// Overwrites any existing bytecode in "c". +static void compile_methods(compiler *c) { + // Start over at the beginning of the bytecode. + c->pc = c->group->bytecode; + + upb_inttable_iter i; + upb_inttable_begin(&i, &c->group->methods); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + upb_pbdecodermethod *method = upb_value_getptr(upb_inttable_iter_value(&i)); + compile_method(c, method); + } +} + +static void set_bytecode_handlers(mgroup *g) { + upb_inttable_iter i; + upb_inttable_begin(&i, &g->methods); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + upb_pbdecodermethod *m = upb_value_getptr(upb_inttable_iter_value(&i)); + + m->code_base.ptr = g->bytecode + m->code_base.ofs; + + upb_byteshandler *h = &m->input_handler_; + upb_byteshandler_setstartstr(h, upb_pbdecoder_startbc, m->code_base.ptr); + upb_byteshandler_setstring(h, upb_pbdecoder_decode, g); + upb_byteshandler_setendstr(h, upb_pbdecoder_end, m); + } +} + + +/* JIT setup. ******************************************************************/ + +#ifdef UPB_USE_JIT_X64 + +static void sethandlers(mgroup *g, bool allowjit) { + g->jit_code = NULL; + if (allowjit) { + // Compile byte-code into machine code, create handlers. + upb_pbdecoder_jit(g); + } else { + set_bytecode_handlers(g); + } +} + +#else // UPB_USE_JIT_X64 + +static void sethandlers(mgroup *g, bool allowjit) { + // No JIT compiled in; use bytecode handlers unconditionally. + UPB_UNUSED(allowjit); + set_bytecode_handlers(g); +} + +#endif // UPB_USE_JIT_X64 + + +// TODO(haberman): allow this to be constructed for an arbitrary set of dest +// handlers and other mgroups (but verify we have a transitive closure). +const mgroup *mgroup_new(const upb_handlers *dest, bool allowjit, bool lazy, + const void *owner) { + UPB_UNUSED(allowjit); + assert(upb_handlers_isfrozen(dest)); + + mgroup *g = newgroup(owner); + compiler *c = newcompiler(g, lazy); + find_methods(c, dest); + + // We compile in two passes: + // 1. all messages are assigned relative offsets from the beginning of the + // bytecode (saved in method->code_base). + // 2. forwards OP_CALL instructions can be correctly linked since message + // offsets have been previously assigned. + // + // Could avoid the second pass by linking OP_CALL instructions somehow. + compile_methods(c); + compile_methods(c); + g->bytecode_end = c->pc; + freecompiler(c); + +#ifdef UPB_DUMP_BYTECODE + FILE *f = fopen("/tmp/upb-bytecode", "wb"); + assert(f); + dumpbc(g->bytecode, g->bytecode_end, stderr); + dumpbc(g->bytecode, g->bytecode_end, f); + fclose(f); +#endif + + sethandlers(g, allowjit); + return g; +} + + +/* upb_pbcodecache ************************************************************/ + +void upb_pbcodecache_init(upb_pbcodecache *c) { + upb_inttable_init(&c->groups, UPB_CTYPE_CONSTPTR); + c->allow_jit_ = true; +} + +void upb_pbcodecache_uninit(upb_pbcodecache *c) { + upb_inttable_iter i; + upb_inttable_begin(&i, &c->groups); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + const mgroup *group = upb_value_getconstptr(upb_inttable_iter_value(&i)); + upb_refcounted_unref(UPB_UPCAST(group), c); + } + upb_inttable_uninit(&c->groups); +} + +bool upb_pbcodecache_allowjit(const upb_pbcodecache *c) { + return c->allow_jit_; +} + +bool upb_pbcodecache_setallowjit(upb_pbcodecache *c, bool allow) { + if (upb_inttable_count(&c->groups) > 0) + return false; + c->allow_jit_ = allow; + return true; +} + +const upb_pbdecodermethod *upb_pbcodecache_getdecodermethod( + upb_pbcodecache *c, const upb_pbdecodermethodopts *opts) { + // Right now we build a new DecoderMethod every time. + // TODO(haberman): properly cache methods by their true key. + const mgroup *g = mgroup_new(opts->handlers, c->allow_jit_, opts->lazy, c); + upb_inttable_push(&c->groups, upb_value_constptr(g)); + + upb_value v; + bool ok = upb_inttable_lookupptr(&g->methods, opts->handlers, &v); + UPB_ASSERT_VAR(ok, ok); + return upb_value_getptr(v); +} + + +/* upb_pbdecodermethodopts ****************************************************/ + +void upb_pbdecodermethodopts_init(upb_pbdecodermethodopts *opts, + const upb_handlers *h) { + opts->handlers = h; + opts->lazy = false; +} + +void upb_pbdecodermethodopts_setlazy(upb_pbdecodermethodopts *opts, bool lazy) { + opts->lazy = lazy; +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2008-2013 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * This file implements a VM for the interpreted (bytecode) decoder. + * + * Bytecode must previously have been generated using the bytecode compiler in + * compile_decoder.c. This decoder then walks through the bytecode op-by-op to + * parse the input. + * + * Decoding is fully resumable; we just keep a pointer to the current bytecode + * instruction and resume from there. A fair amount of the logic here is to + * handle the fact that values can span buffer seams and we have to be able to + * be capable of suspending/resuming from any byte in the stream. This + * sometimes requires keeping a few trailing bytes from the last buffer around + * in the "residual" buffer. + */ + +#include <inttypes.h> +#include <setjmp.h> +#include <stdarg.h> +#include <stddef.h> +#include <stdlib.h> + +#ifdef UPB_DUMP_BYTECODE +#include <stdio.h> +#endif + +#define CHECK_SUSPEND(x) if (!(x)) return upb_pbdecoder_suspend(d); + +// Error messages that are shared between the bytecode and JIT decoders. +const char *kPbDecoderStackOverflow = "Nesting too deep."; + +// Error messages shared within this file. +static const char *kUnterminatedVarint = "Unterminated varint."; + +/* upb_pbdecoder **************************************************************/ + +static opcode halt = OP_HALT; + +// Whether an op consumes any of the input buffer. +static bool consumes_input(opcode op) { + switch (op) { + case OP_SETDISPATCH: + case OP_STARTMSG: + case OP_ENDMSG: + case OP_STARTSEQ: + case OP_ENDSEQ: + case OP_STARTSUBMSG: + case OP_ENDSUBMSG: + case OP_STARTSTR: + case OP_ENDSTR: + case OP_PUSHTAGDELIM: + case OP_POP: + case OP_SETDELIM: + case OP_SETBIGGROUPNUM: + case OP_CHECKDELIM: + case OP_CALL: + case OP_RET: + case OP_BRANCH: + return false; + default: + return true; + } +} + +static bool in_residual_buf(const upb_pbdecoder *d, const char *p); + +// It's unfortunate that we have to micro-manage the compiler this way, +// especially since this tuning is necessarily specific to one hardware +// configuration. But emperically on a Core i7, performance increases 30-50% +// with these annotations. Every instance where these appear, gcc 4.2.1 made +// the wrong decision and degraded performance in benchmarks. +#define FORCEINLINE static inline __attribute__((always_inline)) +#define NOINLINE __attribute__((noinline)) + +static void seterr(upb_pbdecoder *d, const char *msg) { + // TODO(haberman): encapsulate this access to pipeline->status, but not sure + // exactly what that interface should look like. + upb_status_seterrmsg(d->status, msg); +} + +void upb_pbdecoder_seterr(upb_pbdecoder *d, const char *msg) { + seterr(d, msg); +} + + +/* Buffering ******************************************************************/ + +// We operate on one buffer at a time, which is either the user's buffer passed +// to our "decode" callback or some residual bytes from the previous buffer. + +// How many bytes can be safely read from d->ptr without reading past end-of-buf +// or past the current delimited end. +static size_t curbufleft(const upb_pbdecoder *d) { + assert(d->data_end >= d->ptr); + return d->data_end - d->ptr; +} + +// Overall stream offset of d->ptr. +uint64_t offset(const upb_pbdecoder *d) { + return d->bufstart_ofs + (d->ptr - d->buf); +} + +// Advances d->ptr. +static void advance(upb_pbdecoder *d, size_t len) { + assert(curbufleft(d) >= len); + d->ptr += len; +} + +static bool in_buf(const char *p, const char *buf, const char *end) { + return p >= buf && p <= end; +} + +static bool in_residual_buf(const upb_pbdecoder *d, const char *p) { + return in_buf(p, d->residual, d->residual_end); +} + +// Calculates the delim_end value, which is affected by both the current buffer +// and the parsing stack, so must be called whenever either is updated. +static void set_delim_end(upb_pbdecoder *d) { + size_t delim_ofs = d->top->end_ofs - d->bufstart_ofs; + if (delim_ofs <= (d->end - d->buf)) { + d->delim_end = d->buf + delim_ofs; + d->data_end = d->delim_end; + } else { + d->data_end = d->end; + d->delim_end = NULL; + } +} + +static void switchtobuf(upb_pbdecoder *d, const char *buf, const char *end) { + d->ptr = buf; + d->buf = buf; + d->end = end; + set_delim_end(d); +} + +static void advancetobuf(upb_pbdecoder *d, const char *buf, size_t len) { + assert(curbufleft(d) == 0); + d->bufstart_ofs += (d->end - d->buf); + switchtobuf(d, buf, buf + len); +} + +static void checkpoint(upb_pbdecoder *d) { + // The assertion here is in the interests of efficiency, not correctness. + // We are trying to ensure that we don't checkpoint() more often than + // necessary. + assert(d->checkpoint != d->ptr); + d->checkpoint = d->ptr; +} + +// Resumes the decoder from an initial state or from a previous suspend. +int32_t upb_pbdecoder_resume(upb_pbdecoder *d, void *p, const char *buf, + size_t size, const upb_bufhandle *handle) { + UPB_UNUSED(p); // Useless; just for the benefit of the JIT. + d->buf_param = buf; + d->size_param = size; + d->handle = handle; + if (d->residual_end > d->residual) { + // We have residual bytes from the last buffer. + assert(d->ptr == d->residual); + } else { + switchtobuf(d, buf, buf + size); + } + d->checkpoint = d->ptr; + if (d->top->groupnum < 0) { + CHECK_RETURN(upb_pbdecoder_skipunknown(d, -1, 0)); + d->checkpoint = d->ptr; + } + return DECODE_OK; +} + +// Suspends the decoder at the last checkpoint, without saving any residual +// bytes. If there are any unconsumed bytes, returns a short byte count. +size_t upb_pbdecoder_suspend(upb_pbdecoder *d) { + d->pc = d->last; + if (d->checkpoint == d->residual) { + // Checkpoint was in residual buf; no user bytes were consumed. + d->ptr = d->residual; + return 0; + } else { + assert(!in_residual_buf(d, d->checkpoint)); + assert(d->buf == d->buf_param); + size_t consumed = d->checkpoint - d->buf; + d->bufstart_ofs += consumed; + d->residual_end = d->residual; + switchtobuf(d, d->residual, d->residual_end); + return consumed; + } +} + +// Suspends the decoder at the last checkpoint, and saves any unconsumed +// bytes in our residual buffer. This is necessary if we need more user +// bytes to form a complete value, which might not be contiguous in the +// user's buffers. Always consumes all user bytes. +static size_t suspend_save(upb_pbdecoder *d) { + // We hit end-of-buffer before we could parse a full value. + // Save any unconsumed bytes (if any) to the residual buffer. + d->pc = d->last; + + if (d->checkpoint == d->residual) { + // Checkpoint was in residual buf; append user byte(s) to residual buf. + assert((d->residual_end - d->residual) + d->size_param <= + sizeof(d->residual)); + if (!in_residual_buf(d, d->ptr)) { + d->bufstart_ofs -= (d->residual_end - d->residual); + } + memcpy(d->residual_end, d->buf_param, d->size_param); + d->residual_end += d->size_param; + } else { + // Checkpoint was in user buf; old residual bytes not needed. + assert(!in_residual_buf(d, d->checkpoint)); + d->ptr = d->checkpoint; + size_t save = curbufleft(d); + assert(save <= sizeof(d->residual)); + memcpy(d->residual, d->ptr, save); + d->residual_end = d->residual + save; + d->bufstart_ofs = offset(d); + } + + switchtobuf(d, d->residual, d->residual_end); + return d->size_param; +} + +// Skips "bytes" bytes in the stream, which may be more than available. If we +// skip more bytes than are available, we return a long read count to the caller +// indicating how many bytes the caller should skip before passing a new buffer. +static int32_t skip(upb_pbdecoder *d, size_t bytes) { + assert(!in_residual_buf(d, d->ptr) || d->size_param == 0); + if (curbufleft(d) >= bytes) { + // Skipped data is all in current buffer. + advance(d, bytes); + return DECODE_OK; + } else { + // Skipped data extends beyond currently available buffers. + d->pc = d->last; + size_t skip = bytes - curbufleft(d); + d->bufstart_ofs += (d->end - d->buf) + skip; + d->residual_end = d->residual; + switchtobuf(d, d->residual, d->residual_end); + return d->size_param + skip; + } +} + +// Copies the next "bytes" bytes into "buf" and advances the stream. +// Requires that this many bytes are available in the current buffer. +FORCEINLINE void consumebytes(upb_pbdecoder *d, void *buf, size_t bytes) { + assert(bytes <= curbufleft(d)); + memcpy(buf, d->ptr, bytes); + advance(d, bytes); +} + +// Slow path for getting the next "bytes" bytes, regardless of whether they are +// available in the current buffer or not. Returns a status code as described +// in decoder.int.h. +static NOINLINE int32_t getbytes_slow(upb_pbdecoder *d, void *buf, + size_t bytes) { + const size_t avail = curbufleft(d); + consumebytes(d, buf, avail); + bytes -= avail; + assert(bytes > 0); + if (in_residual_buf(d, d->ptr)) { + advancetobuf(d, d->buf_param, d->size_param); + } + if (curbufleft(d) >= bytes) { + consumebytes(d, buf + avail, bytes); + return DECODE_OK; + } else if (d->data_end == d->delim_end) { + seterr(d, "Submessage ended in the middle of a value or group"); + return upb_pbdecoder_suspend(d); + } else { + return suspend_save(d); + } +} + +// Gets the next "bytes" bytes, regardless of whether they are available in the +// current buffer or not. Returns a status code as described in decoder.int.h. +FORCEINLINE int32_t getbytes(upb_pbdecoder *d, void *buf, size_t bytes) { + if (curbufleft(d) >= bytes) { + // Buffer has enough data to satisfy. + consumebytes(d, buf, bytes); + return DECODE_OK; + } else { + return getbytes_slow(d, buf, bytes); + } +} + +static NOINLINE size_t peekbytes_slow(upb_pbdecoder *d, void *buf, + size_t bytes) { + size_t ret = curbufleft(d); + memcpy(buf, d->ptr, ret); + if (in_residual_buf(d, d->ptr)) { + size_t copy = UPB_MIN(bytes - ret, d->size_param); + memcpy(buf + ret, d->buf_param, copy); + ret += copy; + } + return ret; +} + +FORCEINLINE size_t peekbytes(upb_pbdecoder *d, void *buf, size_t bytes) { + if (curbufleft(d) >= bytes) { + memcpy(buf, d->ptr, bytes); + return bytes; + } else { + return peekbytes_slow(d, buf, bytes); + } +} + + +/* Decoding of wire types *****************************************************/ + +// Slow path for decoding a varint from the current buffer position. +// Returns a status code as described in decoder.int.h. +NOINLINE int32_t upb_pbdecoder_decode_varint_slow(upb_pbdecoder *d, + uint64_t *u64) { + *u64 = 0; + uint8_t byte = 0x80; + int bitpos; + for(bitpos = 0; bitpos < 70 && (byte & 0x80); bitpos += 7) { + int32_t ret = getbytes(d, &byte, 1); + if (ret >= 0) return ret; + *u64 |= (uint64_t)(byte & 0x7F) << bitpos; + } + if(bitpos == 70 && (byte & 0x80)) { + seterr(d, kUnterminatedVarint); + return upb_pbdecoder_suspend(d); + } + return DECODE_OK; +} + +// Decodes a varint from the current buffer position. +// Returns a status code as described in decoder.int.h. +FORCEINLINE int32_t decode_varint(upb_pbdecoder *d, uint64_t *u64) { + if (curbufleft(d) > 0 && !(*d->ptr & 0x80)) { + *u64 = *d->ptr; + advance(d, 1); + return DECODE_OK; + } else if (curbufleft(d) >= 10) { + // Fast case. + upb_decoderet r = upb_vdecode_fast(d->ptr); + if (r.p == NULL) { + seterr(d, kUnterminatedVarint); + return upb_pbdecoder_suspend(d); + } + advance(d, r.p - d->ptr); + *u64 = r.val; + return DECODE_OK; + } else { + // Slow case -- varint spans buffer seam. + return upb_pbdecoder_decode_varint_slow(d, u64); + } +} + +// Decodes a 32-bit varint from the current buffer position. +// Returns a status code as described in decoder.int.h. +FORCEINLINE int32_t decode_v32(upb_pbdecoder *d, uint32_t *u32) { + uint64_t u64; + int32_t ret = decode_varint(d, &u64); + if (ret >= 0) return ret; + if (u64 > UINT32_MAX) { + seterr(d, "Unterminated 32-bit varint"); + // TODO(haberman) guarantee that this function return is >= 0 somehow, + // so we know this path will always be treated as error by our caller. + // Right now the size_t -> int32_t can overflow and produce negative values. + *u32 = 0; + return upb_pbdecoder_suspend(d); + } + *u32 = u64; + return DECODE_OK; +} + +// Decodes a fixed32 from the current buffer position. +// Returns a status code as described in decoder.int.h. +// TODO: proper byte swapping for big-endian machines. +FORCEINLINE int32_t decode_fixed32(upb_pbdecoder *d, uint32_t *u32) { + return getbytes(d, u32, 4); +} + +// Decodes a fixed64 from the current buffer position. +// Returns a status code as described in decoder.int.h. +// TODO: proper byte swapping for big-endian machines. +FORCEINLINE int32_t decode_fixed64(upb_pbdecoder *d, uint64_t *u64) { + return getbytes(d, u64, 8); +} + +// Non-static versions of the above functions. +// These are called by the JIT for fallback paths. +int32_t upb_pbdecoder_decode_f32(upb_pbdecoder *d, uint32_t *u32) { + return decode_fixed32(d, u32); +} + +int32_t upb_pbdecoder_decode_f64(upb_pbdecoder *d, uint64_t *u64) { + return decode_fixed64(d, u64); +} + +static double as_double(uint64_t n) { double d; memcpy(&d, &n, 8); return d; } +static float as_float(uint32_t n) { float f; memcpy(&f, &n, 4); return f; } + +// Pushes a frame onto the decoder stack. +static bool decoder_push(upb_pbdecoder *d, uint64_t end) { + upb_pbdecoder_frame *fr = d->top; + + if (end > fr->end_ofs) { + seterr(d, "Submessage end extends past enclosing submessage."); + return false; + } else if ((fr + 1) == d->limit) { + seterr(d, kPbDecoderStackOverflow); + return false; + } + + fr++; + fr->end_ofs = end; + fr->dispatch = NULL; + fr->groupnum = 0; + d->top = fr; + return true; +} + +static bool pushtagdelim(upb_pbdecoder *d, uint32_t arg) { + // While we expect to see an "end" tag (either ENDGROUP or a non-sequence + // field number) prior to hitting any enclosing submessage end, pushing our + // existing delim end prevents us from continuing to parse values from a + // corrupt proto that doesn't give us an END tag in time. + if (!decoder_push(d, d->top->end_ofs)) + return false; + d->top->groupnum = arg; + return true; +} + +// Pops a frame from the decoder stack. +static void decoder_pop(upb_pbdecoder *d) { d->top--; } + +NOINLINE int32_t upb_pbdecoder_checktag_slow(upb_pbdecoder *d, + uint64_t expected) { + uint64_t data = 0; + size_t bytes = upb_value_size(expected); + size_t read = peekbytes(d, &data, bytes); + if (read == bytes && data == expected) { + // Advance past matched bytes. + int32_t ok = getbytes(d, &data, read); + UPB_ASSERT_VAR(ok, ok < 0); + return DECODE_OK; + } else if (read < bytes && memcmp(&data, &expected, read) == 0) { + return suspend_save(d); + } else { + return DECODE_MISMATCH; + } +} + +int32_t upb_pbdecoder_skipunknown(upb_pbdecoder *d, int32_t fieldnum, + uint8_t wire_type) { + if (fieldnum >= 0) + goto have_tag; + + while (true) { + uint32_t tag; + CHECK_RETURN(decode_v32(d, &tag)); + wire_type = tag & 0x7; + fieldnum = tag >> 3; + +have_tag: + if (fieldnum == 0) { + seterr(d, "Saw invalid field number (0)"); + return upb_pbdecoder_suspend(d); + } + + // TODO: deliver to unknown field callback. + switch (wire_type) { + case UPB_WIRE_TYPE_32BIT: + CHECK_RETURN(skip(d, 4)); + break; + case UPB_WIRE_TYPE_64BIT: + CHECK_RETURN(skip(d, 8)); + break; + case UPB_WIRE_TYPE_VARINT: { + uint64_t u64; + CHECK_RETURN(decode_varint(d, &u64)); + break; + } + case UPB_WIRE_TYPE_DELIMITED: { + uint32_t len; + CHECK_RETURN(decode_v32(d, &len)); + CHECK_RETURN(skip(d, len)); + break; + } + case UPB_WIRE_TYPE_START_GROUP: + CHECK_SUSPEND(pushtagdelim(d, -fieldnum)); + break; + case UPB_WIRE_TYPE_END_GROUP: + if (fieldnum == -d->top->groupnum) { + decoder_pop(d); + } else if (fieldnum == d->top->groupnum) { + return DECODE_ENDGROUP; + } else { + seterr(d, "Unmatched ENDGROUP tag."); + return upb_pbdecoder_suspend(d); + } + break; + default: + seterr(d, "Invalid wire type"); + return upb_pbdecoder_suspend(d); + } + + if (d->top->groupnum >= 0) { + return DECODE_OK; + } + + if (d->ptr == d->delim_end) { + seterr(d, "Enclosing submessage ended in the middle of value or group"); + // Unlike most errors we notice during parsing, right now we have consumed + // all of the user's input. + // + // There are three different options for how to handle this case: + // + // 1. decode() = short count, error = set + // 2. decode() = full count, error = set + // 3. decode() = full count, error NOT set, short count and error will + // be reported on next call to decode() (or end()) + // + // (1) and (3) have the advantage that they preserve the invariant that an + // error occurs iff decode() returns a short count. + // + // (2) and (3) have the advantage of reflecting the fact that all of the + // bytes were in fact parsed (and possibly delivered to the unknown field + // handler, in the future when that is supported). + // + // (3) requires extra state in the decode (a place to store the "permanent + // error" that we should return for all subsequent attempts to decode). + // But we likely want this anyway. + // + // Right now we do (1), thanks to the fact that we checkpoint *after* this + // check. (3) may be a better choice long term; unclear at the moment. + return upb_pbdecoder_suspend(d); + } + + checkpoint(d); + } +} + +static void goto_endmsg(upb_pbdecoder *d) { + upb_value v; + bool found = upb_inttable_lookup32(d->top->dispatch, DISPATCH_ENDMSG, &v); + UPB_ASSERT_VAR(found, found); + d->pc = d->top->base + upb_value_getuint64(v); +} + +// Parses a tag and jumps to the corresponding bytecode instruction for this +// field. +// +// If the tag is unknown (or the wire type doesn't match), parses the field as +// unknown. If the tag is a valid ENDGROUP tag, jumps to the bytecode +// instruction for the end of message. +static int32_t dispatch(upb_pbdecoder *d) { + upb_inttable *dispatch = d->top->dispatch; + + // Decode tag. + uint32_t tag; + CHECK_RETURN(decode_v32(d, &tag)); + uint8_t wire_type = tag & 0x7; + uint32_t fieldnum = tag >> 3; + + // Lookup tag. Because of packed/non-packed compatibility, we have to + // check the wire type against two possibilities. + upb_value val; + if (fieldnum != DISPATCH_ENDMSG && + upb_inttable_lookup32(dispatch, fieldnum, &val)) { + uint64_t v = upb_value_getuint64(val); + if (wire_type == (v & 0xff)) { + d->pc = d->top->base + (v >> 16); + return DECODE_OK; + } else if (wire_type == ((v >> 8) & 0xff)) { + bool found = + upb_inttable_lookup(dispatch, fieldnum + UPB_MAX_FIELDNUMBER, &val); + UPB_ASSERT_VAR(found, found); + d->pc = d->top->base + upb_value_getuint64(val); + return DECODE_OK; + } + } + + // Unknown field or ENDGROUP. + int32_t ret = upb_pbdecoder_skipunknown(d, fieldnum, wire_type); + + if (ret == DECODE_ENDGROUP) { + goto_endmsg(d); + return DECODE_OK; + } else { + d->pc = d->last - 1; // Rewind to CHECKDELIM. + return ret; + } +} + +// Callers know that the stack is more than one deep because the opcodes that +// call this only occur after PUSH operations. +upb_pbdecoder_frame *outer_frame(upb_pbdecoder *d) { + assert(d->top != d->stack); + return d->top - 1; +} + + +/* The main decoding loop *****************************************************/ + +// The main decoder VM function. Uses traditional bytecode dispatch loop with a +// switch() statement. +size_t upb_pbdecoder_decode(void *closure, const void *hd, const char *buf, + size_t size, const upb_bufhandle *handle) { + upb_pbdecoder *d = closure; + const mgroup *group = hd; + assert(buf); + int32_t result = upb_pbdecoder_resume(d, NULL, buf, size, handle); + if (result == DECODE_ENDGROUP) { + goto_endmsg(d); + } + CHECK_RETURN(result); + UPB_UNUSED(group); + +#define VMCASE(op, code) \ + case op: { code; if (consumes_input(op)) checkpoint(d); break; } +#define PRIMITIVE_OP(type, wt, name, convfunc, ctype) \ + VMCASE(OP_PARSE_ ## type, { \ + ctype val; \ + CHECK_RETURN(decode_ ## wt(d, &val)); \ + upb_sink_put ## name(&d->top->sink, arg, (convfunc)(val)); \ + }) + + while(1) { + d->last = d->pc; + int32_t instruction = *d->pc++; + opcode op = getop(instruction); + uint32_t arg = instruction >> 8; + int32_t longofs = arg; + assert(d->ptr != d->residual_end); +#ifdef UPB_DUMP_BYTECODE + fprintf(stderr, "s_ofs=%d buf_ofs=%d data_rem=%d buf_rem=%d delim_rem=%d " + "%x %s (%d)\n", + (int)offset(d), + (int)(d->ptr - d->buf), + (int)(d->data_end - d->ptr), + (int)(d->end - d->ptr), + (int)((d->top->end_ofs - d->bufstart_ofs) - (d->ptr - d->buf)), + (int)(d->pc - 1 - group->bytecode), + upb_pbdecoder_getopname(op), + arg); +#endif + switch (op) { + // Technically, we are losing data if we see a 32-bit varint that is not + // properly sign-extended. We could detect this and error about the data + // loss, but proto2 does not do this, so we pass. + PRIMITIVE_OP(INT32, varint, int32, int32_t, uint64_t) + PRIMITIVE_OP(INT64, varint, int64, int64_t, uint64_t) + PRIMITIVE_OP(UINT32, varint, uint32, uint32_t, uint64_t) + PRIMITIVE_OP(UINT64, varint, uint64, uint64_t, uint64_t) + PRIMITIVE_OP(FIXED32, fixed32, uint32, uint32_t, uint32_t) + PRIMITIVE_OP(FIXED64, fixed64, uint64, uint64_t, uint64_t) + PRIMITIVE_OP(SFIXED32, fixed32, int32, int32_t, uint32_t) + PRIMITIVE_OP(SFIXED64, fixed64, int64, int64_t, uint64_t) + PRIMITIVE_OP(BOOL, varint, bool, bool, uint64_t) + PRIMITIVE_OP(DOUBLE, fixed64, double, as_double, uint64_t) + PRIMITIVE_OP(FLOAT, fixed32, float, as_float, uint32_t) + PRIMITIVE_OP(SINT32, varint, int32, upb_zzdec_32, uint64_t) + PRIMITIVE_OP(SINT64, varint, int64, upb_zzdec_64, uint64_t) + + VMCASE(OP_SETDISPATCH, + d->top->base = d->pc - 1; + memcpy(&d->top->dispatch, d->pc, sizeof(void*)); + d->pc += sizeof(void*) / sizeof(uint32_t); + ) + VMCASE(OP_STARTMSG, + CHECK_SUSPEND(upb_sink_startmsg(&d->top->sink)); + ) + VMCASE(OP_ENDMSG, + CHECK_SUSPEND(upb_sink_endmsg(&d->top->sink, d->status)); + ) + VMCASE(OP_STARTSEQ, + upb_pbdecoder_frame *outer = outer_frame(d); + CHECK_SUSPEND(upb_sink_startseq(&outer->sink, arg, &d->top->sink)); + ) + VMCASE(OP_ENDSEQ, + CHECK_SUSPEND(upb_sink_endseq(&d->top->sink, arg)); + ) + VMCASE(OP_STARTSUBMSG, + upb_pbdecoder_frame *outer = outer_frame(d); + CHECK_SUSPEND(upb_sink_startsubmsg(&outer->sink, arg, &d->top->sink)); + ) + VMCASE(OP_ENDSUBMSG, + CHECK_SUSPEND(upb_sink_endsubmsg(&d->top->sink, arg)); + ) + VMCASE(OP_STARTSTR, + uint32_t len = d->top->end_ofs - offset(d); + upb_pbdecoder_frame *outer = outer_frame(d); + CHECK_SUSPEND(upb_sink_startstr(&outer->sink, arg, len, &d->top->sink)); + if (len == 0) { + d->pc++; // Skip OP_STRING. + } + ) + VMCASE(OP_STRING, + uint32_t len = curbufleft(d); + size_t n = upb_sink_putstring(&d->top->sink, arg, d->ptr, len, handle); + if (n > len) { + if (n > d->top->end_ofs - offset(d)) { + seterr(d, "Tried to skip past end of string."); + return upb_pbdecoder_suspend(d); + } else { + int32_t ret = skip(d, n); + // This shouldn't return DECODE_OK, because n > len. + assert(ret >= 0); + return ret; + } + } + advance(d, n); + if (n < len || d->delim_end == NULL) { + // We aren't finished with this string yet. + d->pc--; // Repeat OP_STRING. + if (n > 0) checkpoint(d); + return upb_pbdecoder_suspend(d); + } + ) + VMCASE(OP_ENDSTR, + CHECK_SUSPEND(upb_sink_endstr(&d->top->sink, arg)); + ) + VMCASE(OP_PUSHTAGDELIM, + CHECK_SUSPEND(pushtagdelim(d, arg)); + ) + VMCASE(OP_SETBIGGROUPNUM, + d->top->groupnum = *d->pc++; + ) + VMCASE(OP_POP, + assert(d->top > d->stack); + decoder_pop(d); + ) + VMCASE(OP_PUSHLENDELIM, + uint32_t len; + CHECK_RETURN(decode_v32(d, &len)); + CHECK_SUSPEND(decoder_push(d, offset(d) + len)); + set_delim_end(d); + ) + VMCASE(OP_SETDELIM, + set_delim_end(d); + ) + VMCASE(OP_CHECKDELIM, + // We are guaranteed of this assert because we never allow ourselves to + // consume bytes beyond data_end, which covers delim_end when non-NULL. + assert(!(d->delim_end && d->ptr > d->delim_end)); + if (d->ptr == d->delim_end) + d->pc += longofs; + ) + VMCASE(OP_CALL, + d->callstack[d->call_len++] = d->pc; + d->pc += longofs; + ) + VMCASE(OP_RET, + assert(d->call_len > 0); + d->pc = d->callstack[--d->call_len]; + ) + VMCASE(OP_BRANCH, + d->pc += longofs; + ) + VMCASE(OP_TAG1, + CHECK_SUSPEND(curbufleft(d) > 0); + uint8_t expected = (arg >> 8) & 0xff; + if (*d->ptr == expected) { + advance(d, 1); + } else { + int8_t shortofs; + badtag: + shortofs = arg; + if (shortofs == LABEL_DISPATCH) { + CHECK_RETURN(dispatch(d)); + } else { + d->pc += shortofs; + break; // Avoid checkpoint(). + } + } + ) + VMCASE(OP_TAG2, + CHECK_SUSPEND(curbufleft(d) > 0); + uint16_t expected = (arg >> 8) & 0xffff; + if (curbufleft(d) >= 2) { + uint16_t actual; + memcpy(&actual, d->ptr, 2); + if (expected == actual) { + advance(d, 2); + } else { + goto badtag; + } + } else { + int32_t result = upb_pbdecoder_checktag_slow(d, expected); + if (result == DECODE_MISMATCH) goto badtag; + if (result >= 0) return result; + } + ) + VMCASE(OP_TAGN, { + uint64_t expected; + memcpy(&expected, d->pc, 8); + d->pc += 2; + int32_t result = upb_pbdecoder_checktag_slow(d, expected); + if (result == DECODE_MISMATCH) goto badtag; + if (result >= 0) return result; + }) + VMCASE(OP_HALT, { + return size; + }) + } + } +} + +void *upb_pbdecoder_startbc(void *closure, const void *pc, size_t size_hint) { + upb_pbdecoder *d = closure; + UPB_UNUSED(size_hint); + d->call_len = 1; + d->pc = pc; + return d; +} + +void *upb_pbdecoder_startjit(void *closure, const void *hd, size_t size_hint) { + UPB_UNUSED(hd); + UPB_UNUSED(size_hint); + upb_pbdecoder *d = closure; + d->call_len = 0; + return d; +} + +bool upb_pbdecoder_end(void *closure, const void *handler_data) { + upb_pbdecoder *d = closure; + const upb_pbdecodermethod *method = handler_data; + + if (d->residual_end > d->residual) { + seterr(d, "Unexpected EOF"); + return false; + } + + if (d->top->end_ofs != UINT64_MAX) { + seterr(d, "Unexpected EOF inside delimited string"); + return false; + } + + // Message ends here. + uint64_t end = offset(d); + d->top->end_ofs = end; + + char dummy; +#ifdef UPB_USE_JIT_X64 + const mgroup *group = (const mgroup*)method->group; + if (group->jit_code) { + if (d->top != d->stack) + d->stack->end_ofs = 0; + group->jit_code(closure, method->code_base.ptr, &dummy, 0, NULL); + } else { +#endif + d->stack->end_ofs = end; + const uint32_t *p = d->pc; + // Check the previous bytecode, but guard against beginning. + if (p != method->code_base.ptr) p--; + if (getop(*p) == OP_CHECKDELIM) { + // Rewind from OP_TAG* to OP_CHECKDELIM. + assert(getop(*d->pc) == OP_TAG1 || + getop(*d->pc) == OP_TAG2 || + getop(*d->pc) == OP_TAGN); + d->pc = p; + } + upb_pbdecoder_decode(closure, handler_data, &dummy, 0, NULL); +#ifdef UPB_USE_JIT_X64 + } +#endif + + if (d->call_len != 0) { + seterr(d, "Unexpected EOF"); + return false; + } + + return true; +} + +void upb_pbdecoder_init(upb_pbdecoder *d, const upb_pbdecodermethod *m, + upb_status *s) { + d->limit = &d->stack[UPB_DECODER_MAX_NESTING]; + upb_bytessink_reset(&d->input_, &m->input_handler_, d); + d->method_ = m; + d->callstack[0] = &halt; + d->status = s; + upb_pbdecoder_reset(d); +} + +void upb_pbdecoder_reset(upb_pbdecoder *d) { + d->top = d->stack; + d->top->end_ofs = UINT64_MAX; + d->top->groupnum = 0; + d->bufstart_ofs = 0; + d->ptr = d->residual; + d->buf = d->residual; + d->end = d->residual; + d->residual_end = d->residual; + d->call_len = 1; +} + +uint64_t upb_pbdecoder_bytesparsed(const upb_pbdecoder *d) { + return offset(d); +} + +// Not currently required, but to support outgrowing the static stack we need +// this. +void upb_pbdecoder_uninit(upb_pbdecoder *d) { + UPB_UNUSED(d); +} + +const upb_pbdecodermethod *upb_pbdecoder_method(const upb_pbdecoder *d) { + return d->method_; +} + +bool upb_pbdecoder_resetoutput(upb_pbdecoder *d, upb_sink* sink) { + // TODO(haberman): do we need to test whether the decoder is already on the + // stack (like calling this from within a callback)? Should we support + // rebinding the output at all? + assert(sink); + if (d->method_->dest_handlers_) { + if (sink->handlers != d->method_->dest_handlers_) + return false; + } + upb_sink_reset(&d->top->sink, sink->handlers, sink->closure); + return true; +} + +upb_bytessink *upb_pbdecoder_input(upb_pbdecoder *d) { + return &d->input_; +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2014 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Since we are implementing pure handlers (ie. without any out-of-band access + * to pre-computed lengths), we have to buffer all submessages before we can + * emit even their first byte. + * + * Not knowing the size of submessages also means we can't write a perfect + * zero-copy implementation, even with buffering. Lengths are stored as + * varints, which means that we don't know how many bytes to reserve for the + * length until we know what the length is. + * + * This leaves us with three main choices: + * + * 1. buffer all submessage data in a temporary buffer, then copy it exactly + * once into the output buffer. + * + * 2. attempt to buffer data directly into the output buffer, estimating how + * many bytes each length will take. When our guesses are wrong, use + * memmove() to grow or shrink the allotted space. + * + * 3. buffer directly into the output buffer, allocating a max length + * ahead-of-time for each submessage length. If we overallocated, we waste + * space, but no memcpy() or memmove() is required. This approach requires + * defining a maximum size for submessages and rejecting submessages that + * exceed that size. + * + * (2) and (3) have the potential to have better performance, but they are more + * complicated and subtle to implement: + * + * (3) requires making an arbitrary choice of the maximum message size; it + * wastes space when submessages are shorter than this and fails + * completely when they are longer. This makes it more finicky and + * requires configuration based on the input. It also makes it impossible + * to perfectly match the output of reference encoders that always use the + * optimal amount of space for each length. + * + * (2) requires guessing the the size upfront, and if multiple lengths are + * guessed wrong the minimum required number of memmove() operations may + * be complicated to compute correctly. Implemented properly, it may have + * a useful amortized or average cost, but more investigation is required + * to determine this and what the optimal algorithm is to achieve it. + * + * (1) makes you always pay for exactly one copy, but its implementation is + * the simplest and its performance is predictable. + * + * So for now, we implement (1) only. If we wish to optimize later, we should + * be able to do it without affecting users. + * + * The strategy is to buffer the segments of data that do *not* depend on + * unknown lengths in one buffer, and keep a separate buffer of segment pointers + * and lengths. When the top-level submessage ends, we can go beginning to end, + * alternating the writing of lengths with memcpy() of the rest of the data. + * At the top level though, no buffering is required. + */ + + +#include <stdlib.h> + +/* low-level buffering ********************************************************/ + +// Low-level functions for interacting with the output buffer. + +// TODO(haberman): handle pushback +static void putbuf(upb_pb_encoder *e, const char *buf, size_t len) { + size_t n = upb_bytessink_putbuf(e->output_, e->subc, buf, len, NULL); + UPB_ASSERT_VAR(n, n == len); +} + +static upb_pb_encoder_segment *top(upb_pb_encoder *e) { + return &e->segbuf[*e->top]; +} + +// Call to ensure that at least "bytes" bytes are available for writing at +// e->ptr. Returns false if the bytes could not be allocated. +static bool reserve(upb_pb_encoder *e, size_t bytes) { + if ((e->limit - e->ptr) < bytes) { + size_t needed = bytes + (e->ptr - e->buf); + size_t old_size = e->limit - e->buf; + size_t new_size = old_size; + while (new_size < needed) { + new_size *= 2; + } + + char *realloc_from = (e->buf == e->initbuf) ? NULL : e->buf; + char *new_buf = realloc(realloc_from, new_size); + + if (new_buf == NULL) { + return false; + } + + if (realloc_from == NULL) { + memcpy(new_buf, e->initbuf, old_size); + } + + e->ptr = new_buf + (e->ptr - e->buf); + e->runbegin = new_buf + (e->runbegin - e->buf); + e->limit = new_buf + new_size; + e->buf = new_buf; + } + + return true; +} + +// Call when "bytes" bytes have been writte at e->ptr. The caller *must* have +// previously called reserve() with at least this many bytes. +static void encoder_advance(upb_pb_encoder *e, size_t bytes) { + assert((e->limit - e->ptr) >= bytes); + e->ptr += bytes; +} + +// Call when all of the bytes for a handler have been written. Flushes the +// bytes if possible and necessary, returning false if this failed. +static bool commit(upb_pb_encoder *e) { + if (!e->top) { + // We aren't inside a delimited region. Flush our accumulated bytes to + // the output. + // + // TODO(haberman): in the future we may want to delay flushing for + // efficiency reasons. + putbuf(e, e->buf, e->ptr - e->buf); + e->ptr = e->buf; + } + + return true; +} + +// Writes the given bytes to the buffer, handling reserve/advance. +static bool encode_bytes(upb_pb_encoder *e, const void *data, size_t len) { + if (!reserve(e, len)) { + return false; + } + + memcpy(e->ptr, data, len); + encoder_advance(e, len); + return true; +} + +// Finish the current run by adding the run totals to the segment and message +// length. +static void accumulate(upb_pb_encoder *e) { + assert(e->ptr >= e->runbegin); + size_t run_len = e->ptr - e->runbegin; + e->segptr->seglen += run_len; + top(e)->msglen += run_len; + e->runbegin = e->ptr; +} + +// Call to indicate the start of delimited region for which the full length is +// not yet known. All data will be buffered until the length is known. +// Delimited regions may be nested; their lengths will all be tracked properly. +static bool start_delim(upb_pb_encoder *e) { + if (e->top) { + // We are already buffering, advance to the next segment and push it on the + // stack. + accumulate(e); + + if (++e->top == e->stacklimit) { + // TODO(haberman): grow stack? + return false; + } + + if (++e->segptr == e->seglimit) { + upb_pb_encoder_segment *realloc_from = + (e->segbuf == e->seginitbuf) ? NULL : e->segbuf; + size_t old_size = + (e->seglimit - e->segbuf) * sizeof(upb_pb_encoder_segment); + size_t new_size = old_size * 2; + upb_pb_encoder_segment *new_buf = realloc(realloc_from, new_size); + + if (new_buf == NULL) { + return false; + } + + if (realloc_from == NULL) { + memcpy(new_buf, e->seginitbuf, old_size); + } + + e->segptr = new_buf + (e->segptr - e->segbuf); + e->seglimit = new_buf + (new_size / sizeof(upb_pb_encoder_segment)); + e->segbuf = new_buf; + } + } else { + // We were previously at the top level, start buffering. + e->segptr = e->segbuf; + e->top = e->stack; + e->runbegin = e->ptr; + } + + *e->top = e->segptr - e->segbuf; + e->segptr->seglen = 0; + e->segptr->msglen = 0; + + return true; +} + +// Call to indicate the end of a delimited region. We now know the length of +// the delimited region. If we are not nested inside any other delimited +// regions, we can now emit all of the buffered data we accumulated. +static bool end_delim(upb_pb_encoder *e) { + accumulate(e); + size_t msglen = top(e)->msglen; + + if (e->top == e->stack) { + // All lengths are now available, emit all buffered data. + char buf[UPB_PB_VARINT_MAX_LEN]; + upb_pb_encoder_segment *s; + const char *ptr = e->buf; + for (s = e->segbuf; s <= e->segptr; s++) { + size_t lenbytes = upb_vencode64(s->msglen, buf); + putbuf(e, buf, lenbytes); + putbuf(e, ptr, s->seglen); + ptr += s->seglen; + } + + e->ptr = e->buf; + e->top = NULL; + } else { + // Need to keep buffering; propagate length info into enclosing submessages. + --e->top; + top(e)->msglen += msglen + upb_varint_size(msglen); + } + + return true; +} + + +/* tag_t **********************************************************************/ + +// A precomputed (pre-encoded) tag and length. + +typedef struct { + uint8_t bytes; + char tag[7]; +} tag_t; + +// Allocates a new tag for this field, and sets it in these handlerattr. +static void new_tag(upb_handlers *h, const upb_fielddef *f, upb_wiretype_t wt, + upb_handlerattr *attr) { + uint32_t n = upb_fielddef_number(f); + + tag_t *tag = malloc(sizeof(tag_t)); + tag->bytes = upb_vencode64((n << 3) | wt, tag->tag); + + upb_handlerattr_init(attr); + upb_handlerattr_sethandlerdata(attr, tag); + upb_handlers_addcleanup(h, tag, free); +} + +static bool encode_tag(upb_pb_encoder *e, const tag_t *tag) { + return encode_bytes(e, tag->tag, tag->bytes); +} + + +/* encoding of wire types *****************************************************/ + +static bool encode_fixed64(upb_pb_encoder *e, uint64_t val) { + // TODO(haberman): byte-swap for big endian. + return encode_bytes(e, &val, sizeof(uint64_t)); +} + +static bool encode_fixed32(upb_pb_encoder *e, uint32_t val) { + // TODO(haberman): byte-swap for big endian. + return encode_bytes(e, &val, sizeof(uint32_t)); +} + +static bool encode_varint(upb_pb_encoder *e, uint64_t val) { + if (!reserve(e, UPB_PB_VARINT_MAX_LEN)) { + return false; + } + + encoder_advance(e, upb_vencode64(val, e->ptr)); + return true; +} + +static uint64_t dbl2uint64(double d) { + uint64_t ret; + memcpy(&ret, &d, sizeof(uint64_t)); + return ret; +} + +static uint32_t flt2uint32(float d) { + uint32_t ret; + memcpy(&ret, &d, sizeof(uint32_t)); + return ret; +} + + +/* encoding of proto types ****************************************************/ + +static bool startmsg(void *c, const void *hd) { + upb_pb_encoder *e = c; + UPB_UNUSED(hd); + if (e->depth++ == 0) { + upb_bytessink_start(e->output_, 0, &e->subc); + } + return true; +} + +static bool endmsg(void *c, const void *hd, upb_status *status) { + upb_pb_encoder *e = c; + UPB_UNUSED(hd); + UPB_UNUSED(status); + if (--e->depth == 0) { + upb_bytessink_end(e->output_); + } + return true; +} + +static void *encode_startdelimfield(void *c, const void *hd) { + bool ok = encode_tag(c, hd) && commit(c) && start_delim(c); + return ok ? c : UPB_BREAK; +} + +static bool encode_enddelimfield(void *c, const void *hd) { + UPB_UNUSED(hd); + return end_delim(c); +} + +static void *encode_startgroup(void *c, const void *hd) { + return (encode_tag(c, hd) && commit(c)) ? c : UPB_BREAK; +} + +static bool encode_endgroup(void *c, const void *hd) { + return encode_tag(c, hd) && commit(c); +} + +static void *encode_startstr(void *c, const void *hd, size_t size_hint) { + UPB_UNUSED(size_hint); + return encode_startdelimfield(c, hd); +} + +static size_t encode_strbuf(void *c, const void *hd, const char *buf, + size_t len, const upb_bufhandle *h) { + UPB_UNUSED(hd); + UPB_UNUSED(h); + return encode_bytes(c, buf, len) ? len : 0; +} + +#define T(type, ctype, convert, encode) \ + static bool encode_scalar_##type(void *e, const void *hd, ctype val) { \ + return encode_tag(e, hd) && encode(e, (convert)(val)) && commit(e); \ + } \ + static bool encode_packed_##type(void *e, const void *hd, ctype val) { \ + UPB_UNUSED(hd); \ + return encode(e, (convert)(val)); \ + } + +T(double, double, dbl2uint64, encode_fixed64) +T(float, float, flt2uint32, encode_fixed32); +T(int64, int64_t, uint64_t, encode_varint); +T(int32, int32_t, uint32_t, encode_varint); +T(fixed64, uint64_t, uint64_t, encode_fixed64); +T(fixed32, uint32_t, uint32_t, encode_fixed32); +T(bool, bool, bool, encode_varint); +T(uint32, uint32_t, uint32_t, encode_varint); +T(uint64, uint64_t, uint64_t, encode_varint); +T(enum, int32_t, uint32_t, encode_varint); +T(sfixed32, int32_t, uint32_t, encode_fixed32); +T(sfixed64, int64_t, uint64_t, encode_fixed64); +T(sint32, int32_t, upb_zzenc_32, encode_varint); +T(sint64, int64_t, upb_zzenc_64, encode_varint); + +#undef T + + +/* code to build the handlers *************************************************/ + +static void newhandlers_callback(const void *closure, upb_handlers *h) { + UPB_UNUSED(closure); + + upb_handlers_setstartmsg(h, startmsg, NULL); + upb_handlers_setendmsg(h, endmsg, NULL); + + const upb_msgdef *m = upb_handlers_msgdef(h); + upb_msg_iter i; + for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) { + const upb_fielddef *f = upb_msg_iter_field(&i); + bool packed = upb_fielddef_isseq(f) && upb_fielddef_isprimitive(f) && + upb_fielddef_packed(f); + upb_handlerattr attr; + upb_wiretype_t wt = + packed ? UPB_WIRE_TYPE_DELIMITED + : upb_pb_native_wire_types[upb_fielddef_descriptortype(f)]; + + // Pre-encode the tag for this field. + new_tag(h, f, wt, &attr); + + if (packed) { + upb_handlers_setstartseq(h, f, encode_startdelimfield, &attr); + upb_handlers_setendseq(h, f, encode_enddelimfield, &attr); + } + +#define T(upper, lower, upbtype) \ + case UPB_DESCRIPTOR_TYPE_##upper: \ + if (packed) { \ + upb_handlers_set##upbtype(h, f, encode_packed_##lower, &attr); \ + } else { \ + upb_handlers_set##upbtype(h, f, encode_scalar_##lower, &attr); \ + } \ + break; + + switch (upb_fielddef_descriptortype(f)) { + T(DOUBLE, double, double); + T(FLOAT, float, float); + T(INT64, int64, int64); + T(INT32, int32, int32); + T(FIXED64, fixed64, uint64); + T(FIXED32, fixed32, uint32); + T(BOOL, bool, bool); + T(UINT32, uint32, uint32); + T(UINT64, uint64, uint64); + T(ENUM, enum, int32); + T(SFIXED32, sfixed32, int32); + T(SFIXED64, sfixed64, int64); + T(SINT32, sint32, int32); + T(SINT64, sint64, int64); + case UPB_DESCRIPTOR_TYPE_STRING: + case UPB_DESCRIPTOR_TYPE_BYTES: + upb_handlers_setstartstr(h, f, encode_startstr, &attr); + upb_handlers_setendstr(h, f, encode_enddelimfield, &attr); + upb_handlers_setstring(h, f, encode_strbuf, &attr); + break; + case UPB_DESCRIPTOR_TYPE_MESSAGE: + upb_handlers_setstartsubmsg(h, f, encode_startdelimfield, &attr); + upb_handlers_setendsubmsg(h, f, encode_enddelimfield, &attr); + break; + case UPB_DESCRIPTOR_TYPE_GROUP: { + // Endgroup takes a different tag (wire_type = END_GROUP). + upb_handlerattr attr2; + new_tag(h, f, UPB_WIRE_TYPE_END_GROUP, &attr2); + + upb_handlers_setstartsubmsg(h, f, encode_startgroup, &attr); + upb_handlers_setendsubmsg(h, f, encode_endgroup, &attr2); + + upb_handlerattr_uninit(&attr2); + break; + } + } + +#undef T + + upb_handlerattr_uninit(&attr); + } +} + + +/* public API *****************************************************************/ + +const upb_handlers *upb_pb_encoder_newhandlers(const upb_msgdef *m, + const void *owner) { + return upb_handlers_newfrozen(m, owner, newhandlers_callback, NULL); +} + +#define ARRAYSIZE(x) (sizeof(x) / sizeof(x[0])) + +void upb_pb_encoder_init(upb_pb_encoder *e, const upb_handlers *h) { + e->output_ = NULL; + e->subc = NULL; + e->buf = e->initbuf; + e->ptr = e->buf; + e->limit = e->buf + ARRAYSIZE(e->initbuf); + e->segbuf = e->seginitbuf; + e->seglimit = e->segbuf + ARRAYSIZE(e->seginitbuf); + e->stacklimit = e->stack + ARRAYSIZE(e->stack); + upb_sink_reset(&e->input_, h, e); +} + +void upb_pb_encoder_uninit(upb_pb_encoder *e) { + if (e->buf != e->initbuf) { + free(e->buf); + } + + if (e->segbuf != e->seginitbuf) { + free(e->segbuf); + } +} + +void upb_pb_encoder_resetoutput(upb_pb_encoder *e, upb_bytessink *output) { + upb_pb_encoder_reset(e); + e->output_ = output; + e->subc = output->closure; +} + +void upb_pb_encoder_reset(upb_pb_encoder *e) { + e->segptr = NULL; + e->top = NULL; + e->depth = 0; +} + +upb_sink *upb_pb_encoder_input(upb_pb_encoder *e) { return &e->input_; } +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2010-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + */ + + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +upb_def **upb_load_defs_from_descriptor(const char *str, size_t len, int *n, + void *owner, upb_status *status) { + // Create handlers. + const upb_handlers *reader_h = upb_descreader_newhandlers(&reader_h); + upb_pbdecodermethodopts opts; + upb_pbdecodermethodopts_init(&opts, reader_h); + const upb_pbdecodermethod *decoder_m = + upb_pbdecodermethod_new(&opts, &decoder_m); + + upb_pbdecoder decoder; + upb_descreader reader; + + upb_pbdecoder_init(&decoder, decoder_m, status); + upb_descreader_init(&reader, reader_h, status); + upb_pbdecoder_resetoutput(&decoder, upb_descreader_input(&reader)); + + // Push input data. + bool ok = upb_bufsrc_putbuf(str, len, upb_pbdecoder_input(&decoder)); + + upb_def **ret = NULL; + + if (!ok) goto cleanup; + upb_def **defs = upb_descreader_getdefs(&reader, owner, n); + ret = malloc(sizeof(upb_def*) * (*n)); + memcpy(ret, defs, sizeof(upb_def*) * (*n)); + +cleanup: + upb_pbdecoder_uninit(&decoder); + upb_descreader_uninit(&reader); + upb_handlers_unref(reader_h, &reader_h); + upb_pbdecodermethod_unref(decoder_m, &decoder_m); + return ret; +} + +bool upb_load_descriptor_into_symtab(upb_symtab *s, const char *str, size_t len, + upb_status *status) { + int n; + upb_def **defs = upb_load_defs_from_descriptor(str, len, &n, &defs, status); + if (!defs) return false; + bool success = upb_symtab_add(s, defs, n, &defs, status); + free(defs); + return success; +} + +char *upb_readfile(const char *filename, size_t *len) { + FILE *f = fopen(filename, "rb"); + if(!f) return NULL; + if(fseek(f, 0, SEEK_END) != 0) goto error; + long size = ftell(f); + if(size < 0) goto error; + if(fseek(f, 0, SEEK_SET) != 0) goto error; + char *buf = malloc(size + 1); + if(size && fread(buf, size, 1, f) != 1) goto error; + fclose(f); + if (len) *len = size; + return buf; + +error: + fclose(f); + return NULL; +} + +bool upb_load_descriptor_file_into_symtab(upb_symtab *symtab, const char *fname, + upb_status *status) { + size_t len; + char *data = upb_readfile(fname, &len); + if (!data) { + if (status) upb_status_seterrf(status, "Couldn't read file: %s", fname); + return false; + } + bool success = upb_load_descriptor_into_symtab(symtab, data, len, status); + free(data); + return success; +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * OPT: This is not optimized at all. It uses printf() which parses the format + * string every time, and it allocates memory for every put. + */ + + +#include <ctype.h> +#include <float.h> +#include <inttypes.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + + +#define CHECK(x) if ((x) < 0) goto err; + +static const char *shortname(const char *longname) { + const char *last = strrchr(longname, '.'); + return last ? last + 1 : longname; +} + +static int indent(upb_textprinter *p) { + int i; + if (!p->single_line_) + for (i = 0; i < p->indent_depth_; i++) + upb_bytessink_putbuf(p->output_, p->subc, " ", 2, NULL); + return 0; +} + +static int endfield(upb_textprinter *p) { + const char ch = (p->single_line_ ? ' ' : '\n'); + upb_bytessink_putbuf(p->output_, p->subc, &ch, 1, NULL); + return 0; +} + +static int putescaped(upb_textprinter *p, const char *buf, size_t len, + bool preserve_utf8) { + // Based on CEscapeInternal() from Google's protobuf release. + char dstbuf[4096], *dst = dstbuf, *dstend = dstbuf + sizeof(dstbuf); + const char *end = buf + len; + + // I think hex is prettier and more useful, but proto2 uses octal; should + // investigate whether it can parse hex also. + const bool use_hex = false; + bool last_hex_escape = false; // true if last output char was \xNN + + for (; buf < end; buf++) { + if (dstend - dst < 4) { + upb_bytessink_putbuf(p->output_, p->subc, dstbuf, dst - dstbuf, NULL); + dst = dstbuf; + } + + bool is_hex_escape = false; + switch (*buf) { + case '\n': *(dst++) = '\\'; *(dst++) = 'n'; break; + case '\r': *(dst++) = '\\'; *(dst++) = 'r'; break; + case '\t': *(dst++) = '\\'; *(dst++) = 't'; break; + case '\"': *(dst++) = '\\'; *(dst++) = '\"'; break; + case '\'': *(dst++) = '\\'; *(dst++) = '\''; break; + case '\\': *(dst++) = '\\'; *(dst++) = '\\'; break; + default: + // Note that if we emit \xNN and the buf character after that is a hex + // digit then that digit must be escaped too to prevent it being + // interpreted as part of the character code by C. + if ((!preserve_utf8 || (uint8_t)*buf < 0x80) && + (!isprint(*buf) || (last_hex_escape && isxdigit(*buf)))) { + sprintf(dst, (use_hex ? "\\x%02x" : "\\%03o"), (uint8_t)*buf); + is_hex_escape = use_hex; + dst += 4; + } else { + *(dst++) = *buf; break; + } + } + last_hex_escape = is_hex_escape; + } + // Flush remaining data. + upb_bytessink_putbuf(p->output_, p->subc, dstbuf, dst - dstbuf, NULL); + return 0; +} + +bool putf(upb_textprinter *p, const char *fmt, ...) { + va_list args; + va_start(args, fmt); + + // Run once to get the length of the string. + va_list args_copy; + va_copy(args_copy, args); + int len = vsnprintf(NULL, 0, fmt, args_copy); + va_end(args_copy); + + // + 1 for NULL terminator (vsnprintf() requires it even if we don't). + char *str = malloc(len + 1); + if (!str) return false; + int written = vsnprintf(str, len + 1, fmt, args); + va_end(args); + UPB_ASSERT_VAR(written, written == len); + + bool ok = upb_bytessink_putbuf(p->output_, p->subc, str, len, NULL); + free(str); + return ok; +} + + +/* handlers *******************************************************************/ + +static bool textprinter_startmsg(void *c, const void *hd) { + UPB_UNUSED(hd); + upb_textprinter *p = c; + if (p->indent_depth_ == 0) { + upb_bytessink_start(p->output_, 0, &p->subc); + } + return true; +} + +static bool textprinter_endmsg(void *c, const void *hd, upb_status *s) { + UPB_UNUSED(hd); + UPB_UNUSED(s); + upb_textprinter *p = c; + if (p->indent_depth_ == 0) { + upb_bytessink_end(p->output_); + } + return true; +} + +#define TYPE(name, ctype, fmt) \ + static bool textprinter_put ## name(void *closure, const void *handler_data, \ + ctype val) { \ + upb_textprinter *p = closure; \ + const upb_fielddef *f = handler_data; \ + CHECK(indent(p)); \ + putf(p, "%s: " fmt, upb_fielddef_name(f), val); \ + CHECK(endfield(p)); \ + return true; \ + err: \ + return false; \ +} + +static bool textprinter_putbool(void *closure, const void *handler_data, + bool val) { + upb_textprinter *p = closure; + const upb_fielddef *f = handler_data; + CHECK(indent(p)); + putf(p, "%s: %s", upb_fielddef_name(f), val ? "true" : "false"); + CHECK(endfield(p)); + return true; +err: + return false; +} + +#define STRINGIFY_HELPER(x) #x +#define STRINGIFY_MACROVAL(x) STRINGIFY_HELPER(x) + +TYPE(int32, int32_t, "%" PRId32) +TYPE(int64, int64_t, "%" PRId64) +TYPE(uint32, uint32_t, "%" PRIu32); +TYPE(uint64, uint64_t, "%" PRIu64) +TYPE(float, float, "%." STRINGIFY_MACROVAL(FLT_DIG) "g") +TYPE(double, double, "%." STRINGIFY_MACROVAL(DBL_DIG) "g") + +#undef TYPE + +// Output a symbolic value from the enum if found, else just print as int32. +static bool textprinter_putenum(void *closure, const void *handler_data, + int32_t val) { + upb_textprinter *p = closure; + const upb_fielddef *f = handler_data; + const upb_enumdef *enum_def = upb_downcast_enumdef(upb_fielddef_subdef(f)); + const char *label = upb_enumdef_iton(enum_def, val); + if (label) { + indent(p); + putf(p, "%s: %s", upb_fielddef_name(f), label); + endfield(p); + } else { + if (!textprinter_putint32(closure, handler_data, val)) + return false; + } + return true; +} + +static void *textprinter_startstr(void *closure, const void *handler_data, + size_t size_hint) { + const upb_fielddef *f = handler_data; + UPB_UNUSED(size_hint); + upb_textprinter *p = closure; + indent(p); + putf(p, "%s: \"", upb_fielddef_name(f)); + return p; +} + +static bool textprinter_endstr(void *closure, const void *handler_data) { + UPB_UNUSED(handler_data); + upb_textprinter *p = closure; + putf(p, "\""); + endfield(p); + return true; +} + +static size_t textprinter_putstr(void *closure, const void *hd, const char *buf, + size_t len, const upb_bufhandle *handle) { + UPB_UNUSED(handle); + upb_textprinter *p = closure; + const upb_fielddef *f = hd; + CHECK(putescaped(p, buf, len, upb_fielddef_type(f) == UPB_TYPE_STRING)); + return len; +err: + return 0; +} + +static void *textprinter_startsubmsg(void *closure, const void *handler_data) { + upb_textprinter *p = closure; + const char *name = handler_data; + CHECK(indent(p)); + putf(p, "%s {%c", name, p->single_line_ ? ' ' : '\n'); + p->indent_depth_++; + return p; +err: + return UPB_BREAK; +} + +static bool textprinter_endsubmsg(void *closure, const void *handler_data) { + UPB_UNUSED(handler_data); + upb_textprinter *p = closure; + p->indent_depth_--; + CHECK(indent(p)); + upb_bytessink_putbuf(p->output_, p->subc, "}", 1, NULL); + CHECK(endfield(p)); + return true; +err: + return false; +} + + +/* Public API *****************************************************************/ + +void upb_textprinter_init(upb_textprinter *p, const upb_handlers *h) { + p->single_line_ = false; + p->indent_depth_ = 0; + upb_sink_reset(&p->input_, h, p); +} + +void upb_textprinter_uninit(upb_textprinter *p) { + UPB_UNUSED(p); +} + +void upb_textprinter_reset(upb_textprinter *p, bool single_line) { + p->single_line_ = single_line; + p->indent_depth_ = 0; +} + +static void onmreg(const void *c, upb_handlers *h) { + UPB_UNUSED(c); + const upb_msgdef *m = upb_handlers_msgdef(h); + + upb_handlers_setstartmsg(h, textprinter_startmsg, NULL); + upb_handlers_setendmsg(h, textprinter_endmsg, NULL); + + upb_msg_iter i; + for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) { + upb_fielddef *f = upb_msg_iter_field(&i); + upb_handlerattr attr = UPB_HANDLERATTR_INITIALIZER; + upb_handlerattr_sethandlerdata(&attr, f); + switch (upb_fielddef_type(f)) { + case UPB_TYPE_INT32: + upb_handlers_setint32(h, f, textprinter_putint32, &attr); + break; + case UPB_TYPE_INT64: + upb_handlers_setint64(h, f, textprinter_putint64, &attr); + break; + case UPB_TYPE_UINT32: + upb_handlers_setuint32(h, f, textprinter_putuint32, &attr); + break; + case UPB_TYPE_UINT64: + upb_handlers_setuint64(h, f, textprinter_putuint64, &attr); + break; + case UPB_TYPE_FLOAT: + upb_handlers_setfloat(h, f, textprinter_putfloat, &attr); + break; + case UPB_TYPE_DOUBLE: + upb_handlers_setdouble(h, f, textprinter_putdouble, &attr); + break; + case UPB_TYPE_BOOL: + upb_handlers_setbool(h, f, textprinter_putbool, &attr); + break; + case UPB_TYPE_STRING: + case UPB_TYPE_BYTES: + upb_handlers_setstartstr(h, f, textprinter_startstr, &attr); + upb_handlers_setstring(h, f, textprinter_putstr, &attr); + upb_handlers_setendstr(h, f, textprinter_endstr, &attr); + break; + case UPB_TYPE_MESSAGE: { + const char *name = + upb_fielddef_istagdelim(f) + ? shortname(upb_msgdef_fullname(upb_fielddef_msgsubdef(f))) + : upb_fielddef_name(f); + upb_handlerattr_sethandlerdata(&attr, name); + upb_handlers_setstartsubmsg(h, f, textprinter_startsubmsg, &attr); + upb_handlers_setendsubmsg(h, f, textprinter_endsubmsg, &attr); + break; + } + case UPB_TYPE_ENUM: + upb_handlers_setint32(h, f, textprinter_putenum, &attr); + break; + } + } +} + +const upb_handlers *upb_textprinter_newhandlers(const upb_msgdef *m, + const void *owner) { + return upb_handlers_newfrozen(m, owner, &onmreg, NULL); +} + +upb_sink *upb_textprinter_input(upb_textprinter *p) { return &p->input_; } + +bool upb_textprinter_resetoutput(upb_textprinter *p, upb_bytessink *output) { + p->output_ = output; + return true; +} + +void upb_textprinter_setsingleline(upb_textprinter *p, bool single_line) { + p->single_line_ = single_line; +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2011 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + */ + + +// Index is descriptor type. +const uint8_t upb_pb_native_wire_types[] = { + UPB_WIRE_TYPE_END_GROUP, // ENDGROUP + UPB_WIRE_TYPE_64BIT, // DOUBLE + UPB_WIRE_TYPE_32BIT, // FLOAT + UPB_WIRE_TYPE_VARINT, // INT64 + UPB_WIRE_TYPE_VARINT, // UINT64 + UPB_WIRE_TYPE_VARINT, // INT32 + UPB_WIRE_TYPE_64BIT, // FIXED64 + UPB_WIRE_TYPE_32BIT, // FIXED32 + UPB_WIRE_TYPE_VARINT, // BOOL + UPB_WIRE_TYPE_DELIMITED, // STRING + UPB_WIRE_TYPE_START_GROUP, // GROUP + UPB_WIRE_TYPE_DELIMITED, // MESSAGE + UPB_WIRE_TYPE_DELIMITED, // BYTES + UPB_WIRE_TYPE_VARINT, // UINT32 + UPB_WIRE_TYPE_VARINT, // ENUM + UPB_WIRE_TYPE_32BIT, // SFIXED32 + UPB_WIRE_TYPE_64BIT, // SFIXED64 + UPB_WIRE_TYPE_VARINT, // SINT32 + UPB_WIRE_TYPE_VARINT, // SINT64 +}; + +// A basic branch-based decoder, uses 32-bit values to get good performance +// on 32-bit architectures (but performs well on 64-bits also). +// This scheme comes from the original Google Protobuf implementation (proto2). +upb_decoderet upb_vdecode_max8_branch32(upb_decoderet r) { + upb_decoderet err = {NULL, 0}; + const char *p = r.p; + uint32_t low = (uint32_t)r.val; + uint32_t high = 0; + uint32_t b; + b = *(p++); low |= (b & 0x7fU) << 14; if (!(b & 0x80)) goto done; + b = *(p++); low |= (b & 0x7fU) << 21; if (!(b & 0x80)) goto done; + b = *(p++); low |= (b & 0x7fU) << 28; + high = (b & 0x7fU) >> 4; if (!(b & 0x80)) goto done; + b = *(p++); high |= (b & 0x7fU) << 3; if (!(b & 0x80)) goto done; + b = *(p++); high |= (b & 0x7fU) << 10; if (!(b & 0x80)) goto done; + b = *(p++); high |= (b & 0x7fU) << 17; if (!(b & 0x80)) goto done; + b = *(p++); high |= (b & 0x7fU) << 24; if (!(b & 0x80)) goto done; + b = *(p++); high |= (b & 0x7fU) << 31; if (!(b & 0x80)) goto done; + return err; + +done: + r.val = ((uint64_t)high << 32) | low; + r.p = p; + return r; +} + +// Like the previous, but uses 64-bit values. +upb_decoderet upb_vdecode_max8_branch64(upb_decoderet r) { + const char *p = r.p; + uint64_t val = r.val; + uint64_t b; + upb_decoderet err = {NULL, 0}; + b = *(p++); val |= (b & 0x7fU) << 14; if (!(b & 0x80)) goto done; + b = *(p++); val |= (b & 0x7fU) << 21; if (!(b & 0x80)) goto done; + b = *(p++); val |= (b & 0x7fU) << 28; if (!(b & 0x80)) goto done; + b = *(p++); val |= (b & 0x7fU) << 35; if (!(b & 0x80)) goto done; + b = *(p++); val |= (b & 0x7fU) << 42; if (!(b & 0x80)) goto done; + b = *(p++); val |= (b & 0x7fU) << 49; if (!(b & 0x80)) goto done; + b = *(p++); val |= (b & 0x7fU) << 56; if (!(b & 0x80)) goto done; + b = *(p++); val |= (b & 0x7fU) << 63; if (!(b & 0x80)) goto done; + return err; + +done: + r.val = val; + r.p = p; + return r; +} + +// Given an encoded varint v, returns an integer with a single bit set that +// indicates the end of the varint. Subtracting one from this value will +// yield a mask that leaves only bits that are part of the varint. Returns +// 0 if the varint is unterminated. +static uint64_t upb_get_vstopbit(uint64_t v) { + uint64_t cbits = v | 0x7f7f7f7f7f7f7f7fULL; + return ~cbits & (cbits+1); +} + +// A branchless decoder. Credit to Pascal Massimino for the bit-twiddling. +upb_decoderet upb_vdecode_max8_massimino(upb_decoderet r) { + uint64_t b; + memcpy(&b, r.p, sizeof(b)); + uint64_t stop_bit = upb_get_vstopbit(b); + b = (b & 0x7f7f7f7f7f7f7f7fULL) & (stop_bit - 1); + b += b & 0x007f007f007f007fULL; + b += 3 * (b & 0x0000ffff0000ffffULL); + b += 15 * (b & 0x00000000ffffffffULL); + if (stop_bit == 0) { + // Error: unterminated varint. + upb_decoderet err_r = {(void*)0, 0}; + return err_r; + } + upb_decoderet my_r = {r.p + ((__builtin_ctzll(stop_bit) + 1) / 8), + r.val | (b << 7)}; + return my_r; +} + +// A branchless decoder. Credit to Daniel Wright for the bit-twiddling. +upb_decoderet upb_vdecode_max8_wright(upb_decoderet r) { + uint64_t b; + memcpy(&b, r.p, sizeof(b)); + uint64_t stop_bit = upb_get_vstopbit(b); + b &= (stop_bit - 1); + b = ((b & 0x7f007f007f007f00ULL) >> 1) | (b & 0x007f007f007f007fULL); + b = ((b & 0xffff0000ffff0000ULL) >> 2) | (b & 0x0000ffff0000ffffULL); + b = ((b & 0xffffffff00000000ULL) >> 4) | (b & 0x00000000ffffffffULL); + if (stop_bit == 0) { + // Error: unterminated varint. + upb_decoderet err_r = {(void*)0, 0}; + return err_r; + } + upb_decoderet my_r = {r.p + ((__builtin_ctzll(stop_bit) + 1) / 8), + r.val | (b << 14)}; + return my_r; +} + +#line 1 "upb/json/parser.rl" +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2014 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * A parser that uses the Ragel State Machine Compiler to generate + * the finite automata. + * + * Ragel only natively handles regular languages, but we can manually + * program it a bit to handle context-free languages like JSON, by using + * the "fcall" and "fret" constructs. + * + * This parser can handle the basics, but needs several things to be fleshed + * out: + * + * - handling of unicode escape sequences (including high surrogate pairs). + * - properly check and report errors for unknown fields, stack overflow, + * improper array nesting (or lack of nesting). + * - handling of base64 sequences with padding characters. + * - handling of push-back (non-success returns from sink functions). + * - handling of keys/escape-sequences/etc that span input buffers. + */ + +#include <stdio.h> +#include <stdint.h> +#include <assert.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> + + +#define PARSER_CHECK_RETURN(x) if (!(x)) return false + +static upb_selector_t getsel_for_handlertype(upb_json_parser *p, + upb_handlertype_t type) { + upb_selector_t sel; + bool ok = upb_handlers_getselector(p->top->f, type, &sel); + UPB_ASSERT_VAR(ok, ok); + return sel; +} + +static upb_selector_t parser_getsel(upb_json_parser *p) { + return getsel_for_handlertype( + p, upb_handlers_getprimitivehandlertype(p->top->f)); +} + +static void start_member(upb_json_parser *p) { + assert(!p->top->f); + assert(!p->accumulated); + p->accumulated_len = 0; +} + +static bool end_member(upb_json_parser *p) { + // TODO(haberman): support keys that span buffers or have escape sequences. + assert(!p->top->f); + assert(p->accumulated); + const upb_fielddef *f = + upb_msgdef_ntof(p->top->m, p->accumulated, p->accumulated_len); + + if (!f) { + // TODO(haberman): Ignore unknown fields if requested/configured to do so. + upb_status_seterrf(p->status, "No such field: %.*s\n", + (int)p->accumulated_len, p->accumulated); + return false; + } + + p->top->f = f; + p->accumulated = NULL; + + return true; +} + +static void start_object(upb_json_parser *p) { + upb_sink_startmsg(&p->top->sink); +} + +static void end_object(upb_json_parser *p) { + upb_status status; + upb_sink_endmsg(&p->top->sink, &status); +} + +static bool check_stack(upb_json_parser *p) { + if ((p->top + 1) == p->limit) { + upb_status_seterrmsg(p->status, "Nesting too deep"); + return false; + } + + return true; +} + +static bool start_subobject(upb_json_parser *p) { + assert(p->top->f); + + if (!upb_fielddef_issubmsg(p->top->f)) { + upb_status_seterrf(p->status, + "Object specified for non-message/group field: %s", + upb_fielddef_name(p->top->f)); + return false; + } + + if (!check_stack(p)) return false; + + upb_jsonparser_frame *inner = p->top + 1; + + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSUBMSG); + upb_sink_startsubmsg(&p->top->sink, sel, &inner->sink); + inner->m = upb_fielddef_msgsubdef(p->top->f); + inner->f = NULL; + p->top = inner; + + return true; +} + +static void end_subobject(upb_json_parser *p) { + p->top--; + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSUBMSG); + upb_sink_endsubmsg(&p->top->sink, sel); +} + +static bool start_array(upb_json_parser *p) { + assert(p->top->f); + + if (!upb_fielddef_isseq(p->top->f)) { + upb_status_seterrf(p->status, + "Array specified for non-repeated field: %s", + upb_fielddef_name(p->top->f)); + return false; + } + + if (!check_stack(p)) return false; + + upb_jsonparser_frame *inner = p->top + 1; + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSEQ); + upb_sink_startseq(&p->top->sink, sel, &inner->sink); + inner->m = p->top->m; + inner->f = p->top->f; + p->top = inner; + + return true; +} + +static void end_array(upb_json_parser *p) { + assert(p->top > p->stack); + + p->top--; + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSEQ); + upb_sink_endseq(&p->top->sink, sel); +} + +static void clear_member(upb_json_parser *p) { p->top->f = NULL; } + +static bool parser_putbool(upb_json_parser *p, bool val) { + if (upb_fielddef_type(p->top->f) != UPB_TYPE_BOOL) { + upb_status_seterrf(p->status, + "Boolean value specified for non-bool field: %s", + upb_fielddef_name(p->top->f)); + return false; + } + + bool ok = upb_sink_putbool(&p->top->sink, parser_getsel(p), val); + UPB_ASSERT_VAR(ok, ok); + return true; +} + +static void start_text(upb_json_parser *p, const char *ptr) { + p->text_begin = ptr; +} + +static const signed char b64table[] = { + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, 62/*+*/, -1, -1, -1, 63/*/ */, + 52/*0*/, 53/*1*/, 54/*2*/, 55/*3*/, 56/*4*/, 57/*5*/, 58/*6*/, 59/*7*/, + 60/*8*/, 61/*9*/, -1, -1, -1, -1, -1, -1, + -1, 0/*A*/, 1/*B*/, 2/*C*/, 3/*D*/, 4/*E*/, 5/*F*/, 6/*G*/, + 07/*H*/, 8/*I*/, 9/*J*/, 10/*K*/, 11/*L*/, 12/*M*/, 13/*N*/, 14/*O*/, + 15/*P*/, 16/*Q*/, 17/*R*/, 18/*S*/, 19/*T*/, 20/*U*/, 21/*V*/, 22/*W*/, + 23/*X*/, 24/*Y*/, 25/*Z*/, -1, -1, -1, -1, -1, + -1, 26/*a*/, 27/*b*/, 28/*c*/, 29/*d*/, 30/*e*/, 31/*f*/, 32/*g*/, + 33/*h*/, 34/*i*/, 35/*j*/, 36/*k*/, 37/*l*/, 38/*m*/, 39/*n*/, 40/*o*/, + 41/*p*/, 42/*q*/, 43/*r*/, 44/*s*/, 45/*t*/, 46/*u*/, 47/*v*/, 48/*w*/, + 49/*x*/, 50/*y*/, 51/*z*/, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1 +}; + +// Returns the table value sign-extended to 32 bits. Knowing that the upper +// bits will be 1 for unrecognized characters makes it easier to check for +// this error condition later (see below). +int32_t b64lookup(unsigned char ch) { return b64table[ch]; } + +// Returns true if the given character is not a valid base64 character or +// padding. +bool nonbase64(unsigned char ch) { return b64lookup(ch) == -1 && ch != '='; } + +static bool base64_push(upb_json_parser *p, upb_selector_t sel, const char *ptr, + size_t len) { + const char *limit = ptr + len; + for (; ptr < limit; ptr += 4) { + if (limit - ptr < 4) { + upb_status_seterrf(p->status, + "Base64 input for bytes field not a multiple of 4: %s", + upb_fielddef_name(p->top->f)); + return false; + } + + uint32_t val = b64lookup(ptr[0]) << 18 | + b64lookup(ptr[1]) << 12 | + b64lookup(ptr[2]) << 6 | + b64lookup(ptr[3]); + + // Test the upper bit; returns true if any of the characters returned -1. + if (val & 0x80000000) { + goto otherchar; + } + + char output[3]; + output[0] = val >> 16; + output[1] = (val >> 8) & 0xff; + output[2] = val & 0xff; + upb_sink_putstring(&p->top->sink, sel, output, 3, NULL); + } + return true; + +otherchar: + if (nonbase64(ptr[0]) || nonbase64(ptr[1]) || nonbase64(ptr[2]) || + nonbase64(ptr[3]) ) { + upb_status_seterrf(p->status, + "Non-base64 characters in bytes field: %s", + upb_fielddef_name(p->top->f)); + return false; + } if (ptr[2] == '=') { + // Last group contains only two input bytes, one output byte. + if (ptr[0] == '=' || ptr[1] == '=' || ptr[3] != '=') { + goto badpadding; + } + + uint32_t val = b64lookup(ptr[0]) << 18 | + b64lookup(ptr[1]) << 12; + + assert(!(val & 0x80000000)); + char output = val >> 16; + upb_sink_putstring(&p->top->sink, sel, &output, 1, NULL); + return true; + } else { + // Last group contains only three input bytes, two output bytes. + if (ptr[0] == '=' || ptr[1] == '=' || ptr[2] == '=') { + goto badpadding; + } + + uint32_t val = b64lookup(ptr[0]) << 18 | + b64lookup(ptr[1]) << 12 | + b64lookup(ptr[2]) << 6; + + char output[2]; + output[0] = val >> 16; + output[1] = (val >> 8) & 0xff; + upb_sink_putstring(&p->top->sink, sel, output, 2, NULL); + return true; + } + +badpadding: + upb_status_seterrf(p->status, + "Incorrect base64 padding for field: %s (%.*s)", + upb_fielddef_name(p->top->f), + 4, ptr); + return false; +} + +static bool end_text(upb_json_parser *p, const char *ptr, bool is_num) { + assert(!p->accumulated); // TODO: handle this case. + p->accumulated = p->text_begin; + p->accumulated_len = ptr - p->text_begin; + + if (p->top->f && upb_fielddef_isstring(p->top->f)) { + // This is a string field (as opposed to a member name). + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_STRING); + if (upb_fielddef_type(p->top->f) == UPB_TYPE_BYTES) { + PARSER_CHECK_RETURN(base64_push(p, sel, p->accumulated, + p->accumulated_len)); + } else { + upb_sink_putstring(&p->top->sink, sel, p->accumulated, p->accumulated_len, NULL); + } + p->accumulated = NULL; + } else if (p->top->f && + upb_fielddef_type(p->top->f) == UPB_TYPE_ENUM && + !is_num) { + + // Enum case: resolve enum symbolic name to integer value. + const upb_enumdef *enumdef = + (const upb_enumdef*)upb_fielddef_subdef(p->top->f); + + int32_t int_val = 0; + if (upb_enumdef_ntoi(enumdef, p->accumulated, p->accumulated_len, + &int_val)) { + upb_selector_t sel = parser_getsel(p); + upb_sink_putint32(&p->top->sink, sel, int_val); + } else { + upb_status_seterrmsg(p->status, "Enum value name unknown"); + return false; + } + p->accumulated = NULL; + } + + return true; +} + +static bool start_stringval(upb_json_parser *p) { + assert(p->top->f); + + if (upb_fielddef_isstring(p->top->f)) { + if (!check_stack(p)) return false; + + // Start a new parser frame: parser frames correspond one-to-one with + // handler frames, and string events occur in a sub-frame. + upb_jsonparser_frame *inner = p->top + 1; + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSTR); + upb_sink_startstr(&p->top->sink, sel, 0, &inner->sink); + inner->m = p->top->m; + inner->f = p->top->f; + p->top = inner; + + return true; + } else if (upb_fielddef_type(p->top->f) == UPB_TYPE_ENUM) { + // Do nothing -- symbolic enum names in quotes remain in the + // current parser frame. + return true; + } else { + upb_status_seterrf(p->status, + "String specified for non-string/non-enum field: %s", + upb_fielddef_name(p->top->f)); + return false; + } + +} + +static void end_stringval(upb_json_parser *p) { + if (upb_fielddef_isstring(p->top->f)) { + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSTR); + upb_sink_endstr(&p->top->sink, sel); + p->top--; + } +} + +static void start_number(upb_json_parser *p, const char *ptr) { + start_text(p, ptr); + assert(p->accumulated == NULL); +} + +static void end_number(upb_json_parser *p, const char *ptr) { + end_text(p, ptr, true); + const char *myend = p->accumulated + p->accumulated_len; + char *end; + + switch (upb_fielddef_type(p->top->f)) { + case UPB_TYPE_ENUM: + case UPB_TYPE_INT32: { + long val = strtol(p->accumulated, &end, 0); + if (val > INT32_MAX || val < INT32_MIN || errno == ERANGE || end != myend) + assert(false); + else + upb_sink_putint32(&p->top->sink, parser_getsel(p), val); + break; + } + case UPB_TYPE_INT64: { + long long val = strtoll(p->accumulated, &end, 0); + if (val > INT64_MAX || val < INT64_MIN || errno == ERANGE || end != myend) + assert(false); + else + upb_sink_putint64(&p->top->sink, parser_getsel(p), val); + break; + } + case UPB_TYPE_UINT32: { + unsigned long val = strtoul(p->accumulated, &end, 0); + if (val > UINT32_MAX || errno == ERANGE || end != myend) + assert(false); + else + upb_sink_putuint32(&p->top->sink, parser_getsel(p), val); + break; + } + case UPB_TYPE_UINT64: { + unsigned long long val = strtoull(p->accumulated, &end, 0); + if (val > UINT64_MAX || errno == ERANGE || end != myend) + assert(false); + else + upb_sink_putuint64(&p->top->sink, parser_getsel(p), val); + break; + } + case UPB_TYPE_DOUBLE: { + double val = strtod(p->accumulated, &end); + if (errno == ERANGE || end != myend) + assert(false); + else + upb_sink_putdouble(&p->top->sink, parser_getsel(p), val); + break; + } + case UPB_TYPE_FLOAT: { + float val = strtof(p->accumulated, &end); + if (errno == ERANGE || end != myend) + assert(false); + else + upb_sink_putfloat(&p->top->sink, parser_getsel(p), val); + break; + } + default: + assert(false); + } + + p->accumulated = NULL; +} + +static char escape_char(char in) { + switch (in) { + case 'r': return '\r'; + case 't': return '\t'; + case 'n': return '\n'; + case 'f': return '\f'; + case 'b': return '\b'; + case '/': return '/'; + case '"': return '"'; + case '\\': return '\\'; + default: + assert(0); + return 'x'; + } +} + +static void escape(upb_json_parser *p, const char *ptr) { + char ch = escape_char(*ptr); + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_STRING); + upb_sink_putstring(&p->top->sink, sel, &ch, 1, NULL); +} + +static uint8_t hexdigit(char ch) { + if (ch >= '0' && ch <= '9') { + return ch - '0'; + } else if (ch >= 'a' && ch <= 'f') { + return ch - 'a' + 10; + } else { + assert(ch >= 'A' && ch <= 'F'); + return ch - 'A' + 10; + } +} + +static void start_hex(upb_json_parser *p, const char *ptr) { + start_text(p, ptr); +} + +static void hex(upb_json_parser *p, const char *end) { + const char *start = p->text_begin; + UPB_ASSERT_VAR(end, end - start == 4); + uint16_t codepoint = + (hexdigit(start[0]) << 12) | + (hexdigit(start[1]) << 8) | + (hexdigit(start[2]) << 4) | + hexdigit(start[3]); + // emit the codepoint as UTF-8. + char utf8[3]; // support \u0000 -- \uFFFF -- need only three bytes. + int length = 0; + if (codepoint <= 0x7F) { + utf8[0] = codepoint; + length = 1; + } else if (codepoint <= 0x07FF) { + utf8[1] = (codepoint & 0x3F) | 0x80; + codepoint >>= 6; + utf8[0] = (codepoint & 0x1F) | 0xC0; + length = 2; + } else /* codepoint <= 0xFFFF */ { + utf8[2] = (codepoint & 0x3F) | 0x80; + codepoint >>= 6; + utf8[1] = (codepoint & 0x3F) | 0x80; + codepoint >>= 6; + utf8[0] = (codepoint & 0x0F) | 0xE0; + length = 3; + } + // TODO(haberman): Handle high surrogates: if codepoint is a high surrogate + // we have to wait for the next escape to get the full code point). + + upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_STRING); + upb_sink_putstring(&p->top->sink, sel, utf8, length, NULL); +} + +#define CHECK_RETURN_TOP(x) if (!(x)) goto error + +// What follows is the Ragel parser itself. The language is specified in Ragel +// and the actions call our C functions above. + +#line 596 "upb/json/parser.rl" + + + +#line 514 "upb/json/parser.c" +static const char _json_actions[] = { + 0, 1, 0, 1, 2, 1, 3, 1, + 4, 1, 5, 1, 6, 1, 7, 1, + 9, 1, 11, 1, 12, 1, 13, 1, + 14, 1, 15, 1, 16, 1, 24, 1, + 26, 2, 3, 7, 2, 5, 2, 2, + 5, 7, 2, 10, 8, 2, 12, 14, + 2, 13, 14, 2, 17, 1, 2, 18, + 26, 2, 19, 8, 2, 20, 26, 2, + 21, 26, 2, 22, 26, 2, 23, 26, + 2, 25, 26, 3, 13, 10, 8 +}; + +static const unsigned char _json_key_offsets[] = { + 0, 0, 4, 9, 14, 18, 22, 27, + 32, 37, 41, 45, 48, 51, 53, 57, + 61, 63, 65, 70, 72, 74, 83, 89, + 95, 101, 107, 109, 118, 118, 118, 123, + 128, 133, 133, 134, 135, 136, 137, 137, + 138, 139, 140, 140, 141, 142, 143, 143, + 148, 153, 157, 161, 166, 171, 176, 180, + 180, 183, 183, 183 +}; + +static const char _json_trans_keys[] = { + 32, 123, 9, 13, 32, 34, 125, 9, + 13, 32, 34, 125, 9, 13, 32, 58, + 9, 13, 32, 58, 9, 13, 32, 93, + 125, 9, 13, 32, 44, 125, 9, 13, + 32, 44, 125, 9, 13, 32, 34, 9, + 13, 45, 48, 49, 57, 48, 49, 57, + 46, 69, 101, 48, 57, 69, 101, 48, + 57, 43, 45, 48, 57, 48, 57, 48, + 57, 46, 69, 101, 48, 57, 34, 92, + 34, 92, 34, 47, 92, 98, 102, 110, + 114, 116, 117, 48, 57, 65, 70, 97, + 102, 48, 57, 65, 70, 97, 102, 48, + 57, 65, 70, 97, 102, 48, 57, 65, + 70, 97, 102, 34, 92, 34, 45, 91, + 102, 110, 116, 123, 48, 57, 32, 93, + 125, 9, 13, 32, 44, 93, 9, 13, + 32, 93, 125, 9, 13, 97, 108, 115, + 101, 117, 108, 108, 114, 117, 101, 32, + 34, 125, 9, 13, 32, 34, 125, 9, + 13, 32, 58, 9, 13, 32, 58, 9, + 13, 32, 93, 125, 9, 13, 32, 44, + 125, 9, 13, 32, 44, 125, 9, 13, + 32, 34, 9, 13, 32, 9, 13, 0 +}; + +static const char _json_single_lengths[] = { + 0, 2, 3, 3, 2, 2, 3, 3, + 3, 2, 2, 1, 3, 0, 2, 2, + 0, 0, 3, 2, 2, 9, 0, 0, + 0, 0, 2, 7, 0, 0, 3, 3, + 3, 0, 1, 1, 1, 1, 0, 1, + 1, 1, 0, 1, 1, 1, 0, 3, + 3, 2, 2, 3, 3, 3, 2, 0, + 1, 0, 0, 0 +}; + +static const char _json_range_lengths[] = { + 0, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 0, 1, 1, 1, + 1, 1, 1, 0, 0, 0, 3, 3, + 3, 3, 0, 1, 0, 0, 1, 1, + 1, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 1, + 1, 1, 1, 1, 1, 1, 1, 0, + 1, 0, 0, 0 +}; + +static const short _json_index_offsets[] = { + 0, 0, 4, 9, 14, 18, 22, 27, + 32, 37, 41, 45, 48, 52, 54, 58, + 62, 64, 66, 71, 74, 77, 87, 91, + 95, 99, 103, 106, 115, 116, 117, 122, + 127, 132, 133, 135, 137, 139, 141, 142, + 144, 146, 148, 149, 151, 153, 155, 156, + 161, 166, 170, 174, 179, 184, 189, 193, + 194, 197, 198, 199 +}; + +static const char _json_indicies[] = { + 0, 2, 0, 1, 3, 4, 5, 3, + 1, 6, 7, 8, 6, 1, 9, 10, + 9, 1, 11, 12, 11, 1, 12, 1, + 1, 12, 13, 14, 15, 16, 14, 1, + 17, 18, 8, 17, 1, 18, 7, 18, + 1, 19, 20, 21, 1, 20, 21, 1, + 23, 24, 24, 22, 25, 1, 24, 24, + 25, 22, 26, 26, 27, 1, 27, 1, + 27, 22, 23, 24, 24, 21, 22, 29, + 30, 28, 32, 33, 31, 34, 34, 34, + 34, 34, 34, 34, 34, 35, 1, 36, + 36, 36, 1, 37, 37, 37, 1, 38, + 38, 38, 1, 39, 39, 39, 1, 41, + 42, 40, 43, 44, 45, 46, 47, 48, + 49, 44, 1, 50, 51, 53, 54, 1, + 53, 52, 55, 56, 54, 55, 1, 56, + 1, 1, 56, 52, 57, 58, 1, 59, + 1, 60, 1, 61, 1, 62, 63, 1, + 64, 1, 65, 1, 66, 67, 1, 68, + 1, 69, 1, 70, 71, 72, 73, 71, + 1, 74, 75, 76, 74, 1, 77, 78, + 77, 1, 79, 80, 79, 1, 80, 1, + 1, 80, 81, 82, 83, 84, 82, 1, + 85, 86, 76, 85, 1, 86, 75, 86, + 1, 87, 88, 88, 1, 1, 1, 1, + 0 +}; + +static const char _json_trans_targs[] = { + 1, 0, 2, 3, 4, 56, 3, 4, + 56, 5, 6, 5, 6, 7, 8, 9, + 56, 8, 9, 11, 12, 18, 57, 13, + 15, 14, 16, 17, 20, 58, 21, 20, + 58, 21, 19, 22, 23, 24, 25, 26, + 20, 58, 21, 28, 29, 30, 34, 39, + 43, 47, 59, 59, 31, 30, 33, 31, + 32, 59, 35, 36, 37, 38, 59, 40, + 41, 42, 59, 44, 45, 46, 59, 48, + 49, 55, 48, 49, 55, 50, 51, 50, + 51, 52, 53, 54, 55, 53, 54, 59, + 56 +}; + +static const char _json_trans_actions[] = { + 0, 0, 0, 21, 75, 48, 0, 42, + 23, 17, 17, 0, 0, 15, 19, 19, + 45, 0, 0, 0, 0, 0, 1, 0, + 0, 0, 0, 0, 3, 13, 0, 0, + 33, 5, 11, 0, 7, 0, 0, 0, + 36, 39, 9, 57, 51, 25, 0, 0, + 0, 29, 60, 54, 15, 0, 27, 0, + 0, 31, 0, 0, 0, 0, 66, 0, + 0, 0, 69, 0, 0, 0, 63, 21, + 75, 48, 0, 42, 23, 17, 17, 0, + 0, 15, 19, 19, 45, 0, 0, 72, + 0 +}; + +static const int json_start = 1; +static const int json_first_final = 56; +static const int json_error = 0; + +static const int json_en_number_machine = 10; +static const int json_en_string_machine = 19; +static const int json_en_value_machine = 27; +static const int json_en_main = 1; + + +#line 599 "upb/json/parser.rl" + +size_t parse(void *closure, const void *hd, const char *buf, size_t size, + const upb_bufhandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + upb_json_parser *parser = closure; + + // Variables used by Ragel's generated code. + int cs = parser->current_state; + int *stack = parser->parser_stack; + int top = parser->parser_top; + + const char *p = buf; + const char *pe = buf + size; + + +#line 684 "upb/json/parser.c" + { + int _klen; + unsigned int _trans; + const char *_acts; + unsigned int _nacts; + const char *_keys; + + if ( p == pe ) + goto _test_eof; + if ( cs == 0 ) + goto _out; +_resume: + _keys = _json_trans_keys + _json_key_offsets[cs]; + _trans = _json_index_offsets[cs]; + + _klen = _json_single_lengths[cs]; + if ( _klen > 0 ) { + const char *_lower = _keys; + const char *_mid; + const char *_upper = _keys + _klen - 1; + while (1) { + if ( _upper < _lower ) + break; + + _mid = _lower + ((_upper-_lower) >> 1); + if ( (*p) < *_mid ) + _upper = _mid - 1; + else if ( (*p) > *_mid ) + _lower = _mid + 1; + else { + _trans += (unsigned int)(_mid - _keys); + goto _match; + } + } + _keys += _klen; + _trans += _klen; + } + + _klen = _json_range_lengths[cs]; + if ( _klen > 0 ) { + const char *_lower = _keys; + const char *_mid; + const char *_upper = _keys + (_klen<<1) - 2; + while (1) { + if ( _upper < _lower ) + break; + + _mid = _lower + (((_upper-_lower) >> 1) & ~1); + if ( (*p) < _mid[0] ) + _upper = _mid - 2; + else if ( (*p) > _mid[1] ) + _lower = _mid + 2; + else { + _trans += (unsigned int)((_mid - _keys)>>1); + goto _match; + } + } + _trans += _klen; + } + +_match: + _trans = _json_indicies[_trans]; + cs = _json_trans_targs[_trans]; + + if ( _json_trans_actions[_trans] == 0 ) + goto _again; + + _acts = _json_actions + _json_trans_actions[_trans]; + _nacts = (unsigned int) *_acts++; + while ( _nacts-- > 0 ) + { + switch ( *_acts++ ) + { + case 0: +#line 517 "upb/json/parser.rl" + { p--; {cs = stack[--top]; goto _again;} } + break; + case 1: +#line 518 "upb/json/parser.rl" + { p--; {stack[top++] = cs; cs = 10; goto _again;} } + break; + case 2: +#line 522 "upb/json/parser.rl" + { start_text(parser, p); } + break; + case 3: +#line 523 "upb/json/parser.rl" + { CHECK_RETURN_TOP(end_text(parser, p, false)); } + break; + case 4: +#line 529 "upb/json/parser.rl" + { start_hex(parser, p); } + break; + case 5: +#line 530 "upb/json/parser.rl" + { hex(parser, p); } + break; + case 6: +#line 536 "upb/json/parser.rl" + { escape(parser, p); } + break; + case 7: +#line 539 "upb/json/parser.rl" + { {cs = stack[--top]; goto _again;} } + break; + case 8: +#line 540 "upb/json/parser.rl" + { {stack[top++] = cs; cs = 19; goto _again;} } + break; + case 9: +#line 542 "upb/json/parser.rl" + { p--; {stack[top++] = cs; cs = 27; goto _again;} } + break; + case 10: +#line 547 "upb/json/parser.rl" + { start_member(parser); } + break; + case 11: +#line 548 "upb/json/parser.rl" + { CHECK_RETURN_TOP(end_member(parser)); } + break; + case 12: +#line 551 "upb/json/parser.rl" + { clear_member(parser); } + break; + case 13: +#line 557 "upb/json/parser.rl" + { start_object(parser); } + break; + case 14: +#line 560 "upb/json/parser.rl" + { end_object(parser); } + break; + case 15: +#line 566 "upb/json/parser.rl" + { CHECK_RETURN_TOP(start_array(parser)); } + break; + case 16: +#line 570 "upb/json/parser.rl" + { end_array(parser); } + break; + case 17: +#line 575 "upb/json/parser.rl" + { start_number(parser, p); } + break; + case 18: +#line 576 "upb/json/parser.rl" + { end_number(parser, p); } + break; + case 19: +#line 578 "upb/json/parser.rl" + { CHECK_RETURN_TOP(start_stringval(parser)); } + break; + case 20: +#line 579 "upb/json/parser.rl" + { end_stringval(parser); } + break; + case 21: +#line 581 "upb/json/parser.rl" + { CHECK_RETURN_TOP(parser_putbool(parser, true)); } + break; + case 22: +#line 583 "upb/json/parser.rl" + { CHECK_RETURN_TOP(parser_putbool(parser, false)); } + break; + case 23: +#line 585 "upb/json/parser.rl" + { /* null value */ } + break; + case 24: +#line 587 "upb/json/parser.rl" + { CHECK_RETURN_TOP(start_subobject(parser)); } + break; + case 25: +#line 588 "upb/json/parser.rl" + { end_subobject(parser); } + break; + case 26: +#line 593 "upb/json/parser.rl" + { p--; {cs = stack[--top]; goto _again;} } + break; +#line 866 "upb/json/parser.c" + } + } + +_again: + if ( cs == 0 ) + goto _out; + if ( ++p != pe ) + goto _resume; + _test_eof: {} + _out: {} + } + +#line 615 "upb/json/parser.rl" + + if (p != pe) { + upb_status_seterrf(parser->status, "Parse error at %s\n", p); + } + +error: + // Save parsing state back to parser. + parser->current_state = cs; + parser->parser_top = top; + + return p - buf; +} + +bool end(void *closure, const void *hd) { + UPB_UNUSED(closure); + UPB_UNUSED(hd); + return true; +} + +void upb_json_parser_init(upb_json_parser *p, upb_status *status) { + p->limit = p->stack + UPB_JSON_MAX_DEPTH; + upb_byteshandler_init(&p->input_handler_); + upb_byteshandler_setstring(&p->input_handler_, parse, NULL); + upb_byteshandler_setendstr(&p->input_handler_, end, NULL); + upb_bytessink_reset(&p->input_, &p->input_handler_, p); + p->status = status; +} + +void upb_json_parser_uninit(upb_json_parser *p) { + upb_byteshandler_uninit(&p->input_handler_); +} + +void upb_json_parser_reset(upb_json_parser *p) { + p->top = p->stack; + p->top->f = NULL; + + int cs; + int top; + // Emit Ragel initialization of the parser. + +#line 920 "upb/json/parser.c" + { + cs = json_start; + top = 0; + } + +#line 655 "upb/json/parser.rl" + p->current_state = cs; + p->parser_top = top; + p->text_begin = NULL; + p->accumulated = NULL; + p->accumulated_len = 0; +} + +void upb_json_parser_resetoutput(upb_json_parser *p, upb_sink *sink) { + upb_json_parser_reset(p); + upb_sink_reset(&p->top->sink, sink->handlers, sink->closure); + p->top->m = upb_handlers_msgdef(sink->handlers); + p->accumulated = NULL; +} + +upb_bytessink *upb_json_parser_input(upb_json_parser *p) { + return &p->input_; +} +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2014 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * This currently uses snprintf() to format primitives, and could be optimized + * further. + */ + + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdint.h> + +// StringPiece; a pointer plus a length. +typedef struct { + const char *ptr; + size_t len; +} strpc; + +strpc *newstrpc(upb_handlers *h, const upb_fielddef *f) { + strpc *ret = malloc(sizeof(*ret)); + ret->ptr = upb_fielddef_name(f); + ret->len = strlen(ret->ptr); + upb_handlers_addcleanup(h, ret, free); + return ret; +} + +// ------------ JSON string printing: values, maps, arrays -------------------- + +static void print_data( + upb_json_printer *p, const char *buf, unsigned int len) { + // TODO: Will need to change if we support pushback from the sink. + size_t n = upb_bytessink_putbuf(p->output_, p->subc_, buf, len, NULL); + UPB_ASSERT_VAR(n, n == len); +} + +static void print_comma(upb_json_printer *p) { + if (!p->first_elem_[p->depth_]) { + print_data(p, ",", 1); + } + p->first_elem_[p->depth_] = false; +} + +// Helpers that print properly formatted elements to the JSON output stream. + +// Used for escaping control chars in strings. +static const char kControlCharLimit = 0x20; + +static inline bool is_json_escaped(char c) { + // See RFC 4627. + unsigned char uc = (unsigned char)c; + return uc < kControlCharLimit || uc == '"' || uc == '\\'; +} + +static inline char* json_nice_escape(char c) { + switch (c) { + case '"': return "\\\""; + case '\\': return "\\\\"; + case '\b': return "\\b"; + case '\f': return "\\f"; + case '\n': return "\\n"; + case '\r': return "\\r"; + case '\t': return "\\t"; + default: return NULL; + } +} + +// Write a properly escaped string chunk. The surrounding quotes are *not* +// printed; this is so that the caller has the option of emitting the string +// content in chunks. +static void putstring(upb_json_printer *p, const char *buf, unsigned int len) { + const char* unescaped_run = NULL; + for (unsigned int i = 0; i < len; i++) { + char c = buf[i]; + // Handle escaping. + if (is_json_escaped(c)) { + // Use a "nice" escape, like \n, if one exists for this character. + const char* escape = json_nice_escape(c); + // If we don't have a specific 'nice' escape code, use a \uXXXX-style + // escape. + char escape_buf[8]; + if (!escape) { + unsigned char byte = (unsigned char)c; + snprintf(escape_buf, sizeof(escape_buf), "\\u%04x", (int)byte); + escape = escape_buf; + } + + // N.B. that we assume that the input encoding is equal to the output + // encoding (both UTF-8 for now), so for chars >= 0x20 and != \, ", we + // can simply pass the bytes through. + + // If there's a current run of unescaped chars, print that run first. + if (unescaped_run) { + print_data(p, unescaped_run, &buf[i] - unescaped_run); + unescaped_run = NULL; + } + // Then print the escape code. + print_data(p, escape, strlen(escape)); + } else { + // Add to the current unescaped run of characters. + if (unescaped_run == NULL) { + unescaped_run = &buf[i]; + } + } + } + + // If the string ended in a run of unescaped characters, print that last run. + if (unescaped_run) { + print_data(p, unescaped_run, &buf[len] - unescaped_run); + } +} + +#define CHKLENGTH(x) if (!(x)) return -1; + +// Helpers that format floating point values according to our custom formats. +// Right now we use %.8g and %.17g for float/double, respectively, to match +// proto2::util::JsonFormat's defaults. May want to change this later. + +static size_t fmt_double(double val, char* buf, size_t length) { + size_t n = snprintf(buf, length, "%.17g", val); + CHKLENGTH(n > 0 && n < length); + return n; +} + +static size_t fmt_float(float val, char* buf, size_t length) { + size_t n = snprintf(buf, length, "%.8g", val); + CHKLENGTH(n > 0 && n < length); + return n; +} + +static size_t fmt_bool(bool val, char* buf, size_t length) { + size_t n = snprintf(buf, length, "%s", (val ? "true" : "false")); + CHKLENGTH(n > 0 && n < length); + return n; +} + +static size_t fmt_int64(long val, char* buf, size_t length) { + size_t n = snprintf(buf, length, "%ld", val); + CHKLENGTH(n > 0 && n < length); + return n; +} + +static size_t fmt_uint64(unsigned long long val, char* buf, size_t length) { + size_t n = snprintf(buf, length, "%llu", val); + CHKLENGTH(n > 0 && n < length); + return n; +} + +// Print a map key given a field name. Called by scalar field handlers and by +// startseq for repeated fields. +static bool putkey(void *closure, const void *handler_data) { + upb_json_printer *p = closure; + const strpc *key = handler_data; + print_comma(p); + print_data(p, "\"", 1); + putstring(p, key->ptr, key->len); + print_data(p, "\":", 2); + return true; +} + +#define CHKFMT(val) if ((val) == -1) return false; +#define CHK(val) if (!(val)) return false; + +#define TYPE_HANDLERS(type, fmt_func) \ + static bool put##type(void *closure, const void *handler_data, type val) { \ + upb_json_printer *p = closure; \ + UPB_UNUSED(handler_data); \ + char data[64]; \ + size_t length = fmt_func(val, data, sizeof(data)); \ + CHKFMT(length); \ + print_data(p, data, length); \ + return true; \ + } \ + static bool scalar_##type(void *closure, const void *handler_data, \ + type val) { \ + CHK(putkey(closure, handler_data)); \ + CHK(put##type(closure, handler_data, val)); \ + return true; \ + } \ + static bool repeated_##type(void *closure, const void *handler_data, \ + type val) { \ + upb_json_printer *p = closure; \ + print_comma(p); \ + CHK(put##type(closure, handler_data, val)); \ + return true; \ + } + +TYPE_HANDLERS(double, fmt_double); +TYPE_HANDLERS(float, fmt_float); +TYPE_HANDLERS(bool, fmt_bool); +TYPE_HANDLERS(int32_t, fmt_int64); +TYPE_HANDLERS(uint32_t, fmt_int64); +TYPE_HANDLERS(int64_t, fmt_int64); +TYPE_HANDLERS(uint64_t, fmt_uint64); + +#undef TYPE_HANDLERS + +typedef struct { + void *keyname; + const upb_enumdef *enumdef; +} EnumHandlerData; + +static bool scalar_enum(void *closure, const void *handler_data, + int32_t val) { + const EnumHandlerData *hd = handler_data; + upb_json_printer *p = closure; + CHK(putkey(closure, hd->keyname)); + + const char *symbolic_name = upb_enumdef_iton(hd->enumdef, val); + if (symbolic_name) { + print_data(p, "\"", 1); + putstring(p, symbolic_name, strlen(symbolic_name)); + print_data(p, "\"", 1); + } else { + putint32_t(closure, NULL, val); + } + + return true; +} + +static bool repeated_enum(void *closure, const void *handler_data, + int32_t val) { + const EnumHandlerData *hd = handler_data; + upb_json_printer *p = closure; + print_comma(p); + + const char *symbolic_name = upb_enumdef_iton(hd->enumdef, val); + if (symbolic_name) { + print_data(p, "\"", 1); + putstring(p, symbolic_name, strlen(symbolic_name)); + print_data(p, "\"", 1); + } else { + putint32_t(closure, NULL, val); + } + + return true; +} + +static void *scalar_startsubmsg(void *closure, const void *handler_data) { + return putkey(closure, handler_data) ? closure : UPB_BREAK; +} + +static void *repeated_startsubmsg(void *closure, const void *handler_data) { + UPB_UNUSED(handler_data); + upb_json_printer *p = closure; + print_comma(p); + return closure; +} + +static bool startmap(void *closure, const void *handler_data) { + UPB_UNUSED(handler_data); + upb_json_printer *p = closure; + if (p->depth_++ == 0) { + upb_bytessink_start(p->output_, 0, &p->subc_); + } + p->first_elem_[p->depth_] = true; + print_data(p, "{", 1); + return true; +} + +static bool endmap(void *closure, const void *handler_data, upb_status *s) { + UPB_UNUSED(handler_data); + UPB_UNUSED(s); + upb_json_printer *p = closure; + if (--p->depth_ == 0) { + upb_bytessink_end(p->output_); + } + print_data(p, "}", 1); + return true; +} + +static void *startseq(void *closure, const void *handler_data) { + upb_json_printer *p = closure; + CHK(putkey(closure, handler_data)); + p->depth_++; + p->first_elem_[p->depth_] = true; + print_data(p, "[", 1); + return closure; +} + +static bool endseq(void *closure, const void *handler_data) { + UPB_UNUSED(handler_data); + upb_json_printer *p = closure; + print_data(p, "]", 1); + p->depth_--; + return true; +} + +static size_t putstr(void *closure, const void *handler_data, const char *str, + size_t len, const upb_bufhandle *handle) { + UPB_UNUSED(handler_data); + UPB_UNUSED(handle); + upb_json_printer *p = closure; + putstring(p, str, len); + return len; +} + +// This has to Base64 encode the bytes, because JSON has no "bytes" type. +static size_t putbytes(void *closure, const void *handler_data, const char *str, + size_t len, const upb_bufhandle *handle) { + UPB_UNUSED(handler_data); + UPB_UNUSED(handle); + upb_json_printer *p = closure; + + // This is the regular base64, not the "web-safe" version. + static const char base64[] = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + + // Base64-encode. + char data[16000]; + const char *limit = data + sizeof(data); + const unsigned char *from = (const unsigned char*)str; + char *to = data; + size_t remaining = len; + while (remaining > 2) { + // TODO(haberman): handle encoded lengths > sizeof(data) + UPB_ASSERT_VAR(limit, (limit - to) >= 4); + + to[0] = base64[from[0] >> 2]; + to[1] = base64[((from[0] & 0x3) << 4) | (from[1] >> 4)]; + to[2] = base64[((from[1] & 0xf) << 2) | (from[2] >> 6)]; + to[3] = base64[from[2] & 0x3f]; + + remaining -= 3; + to += 4; + from += 3; + } + + switch (remaining) { + case 2: + to[0] = base64[from[0] >> 2]; + to[1] = base64[((from[0] & 0x3) << 4) | (from[1] >> 4)]; + to[2] = base64[(from[1] & 0xf) << 2]; + to[3] = '='; + to += 4; + from += 2; + break; + case 1: + to[0] = base64[from[0] >> 2]; + to[1] = base64[((from[0] & 0x3) << 4)]; + to[2] = '='; + to[3] = '='; + to += 4; + from += 1; + break; + } + + size_t bytes = to - data; + print_data(p, "\"", 1); + putstring(p, data, bytes); + print_data(p, "\"", 1); + return len; +} + +static void *scalar_startstr(void *closure, const void *handler_data, + size_t size_hint) { + UPB_UNUSED(handler_data); + UPB_UNUSED(size_hint); + upb_json_printer *p = closure; + CHK(putkey(closure, handler_data)); + print_data(p, "\"", 1); + return p; +} + +static size_t scalar_str(void *closure, const void *handler_data, + const char *str, size_t len, + const upb_bufhandle *handle) { + CHK(putstr(closure, handler_data, str, len, handle)); + return len; +} + +static bool scalar_endstr(void *closure, const void *handler_data) { + UPB_UNUSED(handler_data); + upb_json_printer *p = closure; + print_data(p, "\"", 1); + return true; +} + +static void *repeated_startstr(void *closure, const void *handler_data, + size_t size_hint) { + UPB_UNUSED(handler_data); + UPB_UNUSED(size_hint); + upb_json_printer *p = closure; + print_comma(p); + print_data(p, "\"", 1); + return p; +} + +static size_t repeated_str(void *closure, const void *handler_data, + const char *str, size_t len, + const upb_bufhandle *handle) { + CHK(putstr(closure, handler_data, str, len, handle)); + return len; +} + +static bool repeated_endstr(void *closure, const void *handler_data) { + UPB_UNUSED(handler_data); + upb_json_printer *p = closure; + print_data(p, "\"", 1); + return true; +} + +static size_t scalar_bytes(void *closure, const void *handler_data, + const char *str, size_t len, + const upb_bufhandle *handle) { + CHK(putkey(closure, handler_data)); + CHK(putbytes(closure, handler_data, str, len, handle)); + return len; +} + +static size_t repeated_bytes(void *closure, const void *handler_data, + const char *str, size_t len, + const upb_bufhandle *handle) { + upb_json_printer *p = closure; + print_comma(p); + CHK(putbytes(closure, handler_data, str, len, handle)); + return len; +} + +void printer_sethandlers(const void *closure, upb_handlers *h) { + UPB_UNUSED(closure); + + upb_handlerattr empty_attr = UPB_HANDLERATTR_INITIALIZER; + upb_handlers_setstartmsg(h, startmap, &empty_attr); + upb_handlers_setendmsg(h, endmap, &empty_attr); + +#define TYPE(type, name, ctype) \ + case type: \ + if (upb_fielddef_isseq(f)) { \ + upb_handlers_set##name(h, f, repeated_##ctype, &empty_attr); \ + } else { \ + upb_handlers_set##name(h, f, scalar_##ctype, &name_attr); \ + } \ + break; + + upb_msg_iter i; + upb_msg_begin(&i, upb_handlers_msgdef(h)); + for(; !upb_msg_done(&i); upb_msg_next(&i)) { + const upb_fielddef *f = upb_msg_iter_field(&i); + + upb_handlerattr name_attr = UPB_HANDLERATTR_INITIALIZER; + upb_handlerattr_sethandlerdata(&name_attr, newstrpc(h, f)); + + if (upb_fielddef_isseq(f)) { + upb_handlers_setstartseq(h, f, startseq, &name_attr); + upb_handlers_setendseq(h, f, endseq, &empty_attr); + } + + switch (upb_fielddef_type(f)) { + TYPE(UPB_TYPE_FLOAT, float, float); + TYPE(UPB_TYPE_DOUBLE, double, double); + TYPE(UPB_TYPE_BOOL, bool, bool); + TYPE(UPB_TYPE_INT32, int32, int32_t); + TYPE(UPB_TYPE_UINT32, uint32, uint32_t); + TYPE(UPB_TYPE_INT64, int64, int64_t); + TYPE(UPB_TYPE_UINT64, uint64, uint64_t); + case UPB_TYPE_ENUM: { + // For now, we always emit symbolic names for enums. We may want an + // option later to control this behavior, but we will wait for a real + // need first. + EnumHandlerData *hd = malloc(sizeof(EnumHandlerData)); + hd->enumdef = (const upb_enumdef *)upb_fielddef_subdef(f); + hd->keyname = newstrpc(h, f); + upb_handlers_addcleanup(h, hd, free); + upb_handlerattr enum_attr = UPB_HANDLERATTR_INITIALIZER; + upb_handlerattr_sethandlerdata(&enum_attr, hd); + + if (upb_fielddef_isseq(f)) { + upb_handlers_setint32(h, f, repeated_enum, &enum_attr); + } else { + upb_handlers_setint32(h, f, scalar_enum, &enum_attr); + } + + upb_handlerattr_uninit(&enum_attr); + break; + } + case UPB_TYPE_STRING: + if (upb_fielddef_isseq(f)) { + upb_handlers_setstartstr(h, f, repeated_startstr, &empty_attr); + upb_handlers_setstring(h, f, repeated_str, &empty_attr); + upb_handlers_setendstr(h, f, repeated_endstr, &empty_attr); + } else { + upb_handlers_setstartstr(h, f, scalar_startstr, &name_attr); + upb_handlers_setstring(h, f, scalar_str, &empty_attr); + upb_handlers_setendstr(h, f, scalar_endstr, &empty_attr); + } + break; + case UPB_TYPE_BYTES: + // XXX: this doesn't support strings that span buffers yet. The base64 + // encoder will need to be made resumable for this to work properly. + if (upb_fielddef_isseq(f)) { + upb_handlers_setstring(h, f, repeated_bytes, &empty_attr); + } else { + upb_handlers_setstring(h, f, scalar_bytes, &name_attr); + } + break; + case UPB_TYPE_MESSAGE: + if (upb_fielddef_isseq(f)) { + upb_handlers_setstartsubmsg(h, f, repeated_startsubmsg, &name_attr); + } else { + upb_handlers_setstartsubmsg(h, f, scalar_startsubmsg, &name_attr); + } + break; + } + + upb_handlerattr_uninit(&name_attr); + } + + upb_handlerattr_uninit(&empty_attr); +#undef TYPE +} + +/* Public API *****************************************************************/ + +void upb_json_printer_init(upb_json_printer *p, const upb_handlers *h) { + p->output_ = NULL; + p->depth_ = 0; + upb_sink_reset(&p->input_, h, p); +} + +void upb_json_printer_uninit(upb_json_printer *p) { + UPB_UNUSED(p); +} + +void upb_json_printer_reset(upb_json_printer *p) { + p->depth_ = 0; +} + +void upb_json_printer_resetoutput(upb_json_printer *p, upb_bytessink *output) { + upb_json_printer_reset(p); + p->output_ = output; +} + +upb_sink *upb_json_printer_input(upb_json_printer *p) { + return &p->input_; +} + +const upb_handlers *upb_json_printer_newhandlers(const upb_msgdef *md, + const void *owner) { + return upb_handlers_newfrozen(md, owner, printer_sethandlers, NULL); +} diff --git a/ruby/ext/google/protobuf_c/upb.h b/ruby/ext/google/protobuf_c/upb.h new file mode 100644 index 00000000..150aef10 --- /dev/null +++ b/ruby/ext/google/protobuf_c/upb.h @@ -0,0 +1,7439 @@ +// Amalgamated source file +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Defs are upb's internal representation of the constructs that can appear + * in a .proto file: + * + * - upb_msgdef: describes a "message" construct. + * - upb_fielddef: describes a message field. + * - upb_enumdef: describes an enum. + * (TODO: definitions of services). + * + * Like upb_refcounted objects, defs are mutable only until frozen, and are + * only thread-safe once frozen. + * + * This is a mixed C/C++ interface that offers a full API to both languages. + * See the top-level README for more information. + */ + +#ifndef UPB_DEF_H_ +#define UPB_DEF_H_ + +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * A refcounting scheme that supports circular refs. It accomplishes this by + * partitioning the set of objects into groups such that no cycle spans groups; + * we can then reference-count the group as a whole and ignore refs within the + * group. When objects are mutable, these groups are computed very + * conservatively; we group any objects that have ever had a link between them. + * When objects are frozen, we compute strongly-connected components which + * allows us to be precise and only group objects that are actually cyclic. + * + * This is a mixed C/C++ interface that offers a full API to both languages. + * See the top-level README for more information. + */ + +#ifndef UPB_REFCOUNTED_H_ +#define UPB_REFCOUNTED_H_ + +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * This header is INTERNAL-ONLY! Its interfaces are not public or stable! + * This file defines very fast int->upb_value (inttable) and string->upb_value + * (strtable) hash tables. + * + * The table uses chained scatter with Brent's variation (inspired by the Lua + * implementation of hash tables). The hash function for strings is Austin + * Appleby's "MurmurHash." + * + * The inttable uses uintptr_t as its key, which guarantees it can be used to + * store pointers or integers of at least 32 bits (upb isn't really useful on + * systems where sizeof(void*) < 4). + * + * The table must be homogenous (all values of the same type). In debug + * mode, we check this on insert and lookup. + */ + +#ifndef UPB_TABLE_H_ +#define UPB_TABLE_H_ + +#include <assert.h> +#include <stdint.h> +#include <string.h> +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * This file contains shared definitions that are widely used across upb. + * + * This is a mixed C/C++ interface that offers a full API to both languages. + * See the top-level README for more information. + */ + +#ifndef UPB_H_ +#define UPB_H_ + +#include <assert.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stddef.h> + +// inline if possible, emit standalone code if required. +#ifdef __cplusplus +#define UPB_INLINE inline +#else +#define UPB_INLINE static inline +#endif + +#if __STDC_VERSION__ >= 199901L +#define UPB_C99 +#endif + +#if ((defined(__cplusplus) && __cplusplus >= 201103L) || \ + defined(__GXX_EXPERIMENTAL_CXX0X__)) && !defined(UPB_NO_CXX11) +#define UPB_CXX11 +#endif + +#ifdef UPB_CXX11 +#include <type_traits> +#define UPB_DISALLOW_COPY_AND_ASSIGN(class_name) \ + class_name(const class_name&) = delete; \ + void operator=(const class_name&) = delete; +#define UPB_DISALLOW_POD_OPS(class_name, full_class_name) \ + class_name() = delete; \ + ~class_name() = delete; \ + /* Friend Pointer<T> so it can access base class. */ \ + friend class Pointer<full_class_name>; \ + friend class Pointer<const full_class_name>; \ + UPB_DISALLOW_COPY_AND_ASSIGN(class_name) +#define UPB_ASSERT_STDLAYOUT(type) \ + static_assert(std::is_standard_layout<type>::value, \ + #type " must be standard layout"); +#else // !defined(UPB_CXX11) +#define UPB_DISALLOW_COPY_AND_ASSIGN(class_name) \ + class_name(const class_name&); \ + void operator=(const class_name&); +#define UPB_DISALLOW_POD_OPS(class_name, full_class_name) \ + class_name(); \ + ~class_name(); \ + /* Friend Pointer<T> so it can access base class. */ \ + friend class Pointer<full_class_name>; \ + friend class Pointer<const full_class_name>; \ + UPB_DISALLOW_COPY_AND_ASSIGN(class_name) +#define UPB_ASSERT_STDLAYOUT(type) +#endif + + +#ifdef __cplusplus + +#define UPB_PRIVATE_FOR_CPP private: +#define UPB_DECLARE_TYPE(cppname, cname) typedef cppname cname; +#define UPB_BEGIN_EXTERN_C extern "C" { +#define UPB_END_EXTERN_C } +#define UPB_DEFINE_STRUCT0(cname, members) members; +#define UPB_DEFINE_STRUCT(cname, cbase, members) \ + public: \ + cbase* base() { return &base_; } \ + const cbase* base() const { return &base_; } \ + \ + private: \ + cbase base_; \ + members; +#define UPB_DEFINE_CLASS0(cppname, cppmethods, members) \ + class cppname { \ + cppmethods \ + members \ + }; \ + UPB_ASSERT_STDLAYOUT(cppname); +#define UPB_DEFINE_CLASS1(cppname, cppbase, cppmethods, members) \ + UPB_DEFINE_CLASS0(cppname, cppmethods, members) \ + namespace upb { \ + template <> \ + class Pointer<cppname> : public PointerBase<cppname, cppbase> { \ + public: \ + explicit Pointer(cppname* ptr) : PointerBase(ptr) {} \ + }; \ + template <> \ + class Pointer<const cppname> \ + : public PointerBase<const cppname, const cppbase> { \ + public: \ + explicit Pointer(const cppname* ptr) : PointerBase(ptr) {} \ + }; \ + } +#define UPB_DEFINE_CLASS2(cppname, cppbase, cppbase2, cppmethods, members) \ + UPB_DEFINE_CLASS0(cppname, UPB_QUOTE(cppmethods), members) \ + namespace upb { \ + template <> \ + class Pointer<cppname> : public PointerBase2<cppname, cppbase, cppbase2> { \ + public: \ + explicit Pointer(cppname* ptr) : PointerBase2(ptr) {} \ + }; \ + template <> \ + class Pointer<const cppname> \ + : public PointerBase2<const cppname, const cppbase, const cppbase2> { \ + public: \ + explicit Pointer(const cppname* ptr) : PointerBase2(ptr) {} \ + }; \ + } + +#else // !defined(__cplusplus) + +#define UPB_PRIVATE_FOR_CPP +#define UPB_DECLARE_TYPE(cppname, cname) \ + struct cname; \ + typedef struct cname cname; +#define UPB_BEGIN_EXTERN_C +#define UPB_END_EXTERN_C +#define UPB_DEFINE_STRUCT0(cname, members) \ + struct cname { \ + members; \ + }; +#define UPB_DEFINE_STRUCT(cname, cbase, members) \ + struct cname { \ + cbase base; \ + members; \ + }; +#define UPB_DEFINE_CLASS0(cppname, cppmethods, members) members +#define UPB_DEFINE_CLASS1(cppname, cppbase, cppmethods, members) members +#define UPB_DEFINE_CLASS2(cppname, cppbase, cppbase2, cppmethods, members) \ + members + +#endif // defined(__cplusplus) + +#ifdef __GNUC__ +#define UPB_NORETURN __attribute__((__noreturn__)) +#else +#define UPB_NORETURN +#endif + +#define UPB_MAX(x, y) ((x) > (y) ? (x) : (y)) +#define UPB_MIN(x, y) ((x) < (y) ? (x) : (y)) + +#define UPB_UNUSED(var) (void)var + +// Code with commas confuses the preprocessor when passed as arguments, whether +// C++ type names with commas (eg. Foo<int, int>) or code blocks that declare +// variables (ie. int foo, bar). +#define UPB_QUOTE(...) __VA_ARGS__ + +// For asserting something about a variable when the variable is not used for +// anything else. This prevents "unused variable" warnings when compiling in +// debug mode. +#define UPB_ASSERT_VAR(var, predicate) UPB_UNUSED(var); assert(predicate) + +// Generic function type. +typedef void upb_func(); + +/* Casts **********************************************************************/ + +// Upcasts for C. For downcasts see the definitions of the subtypes. +#define UPB_UPCAST(obj) (&(obj)->base) +#define UPB_UPCAST2(obj) UPB_UPCAST(UPB_UPCAST(obj)) + +#ifdef __cplusplus + +// Downcasts for C++. We can't use C++ inheritance directly and maintain +// compatibility with C. So our inheritance is undeclared in C++. +// Specializations of these casting functions are defined for appropriate type +// pairs, and perform the necessary checks. +// +// Example: +// upb::Def* def = <...>; +// upb::MessageDef* = upb::dyn_cast<upb::MessageDef*>(def); + +namespace upb { + +// Casts to a direct subclass. The caller must know that cast is correct; an +// incorrect cast will throw an assertion failure in debug mode. +template<class To, class From> To down_cast(From* f); + +// Casts to a direct subclass. If the class does not actually match the given +// subtype, returns NULL. +template<class To, class From> To dyn_cast(From* f); + +// Pointer<T> is a simple wrapper around a T*. It is only constructed for +// upcast() below, and its sole purpose is to be implicitly convertable to T* or +// pointers to base classes, just as a pointer would be in regular C++ if the +// inheritance were directly expressed as C++ inheritance. +template <class T> class Pointer; + +// Casts to any base class, or the type itself (ie. can be a no-op). +template <class T> inline Pointer<T> upcast(T *f) { return Pointer<T>(f); } + +template <class T, class Base> +class PointerBase { + public: + explicit PointerBase(T* ptr) : ptr_(ptr) {} + operator T*() { return ptr_; } + operator Base*() { return ptr_->base(); } + + private: + T* ptr_; +}; + +template <class T, class Base, class Base2> +class PointerBase2 : public PointerBase<T, Base> { + public: + explicit PointerBase2(T* ptr) : PointerBase<T, Base>(ptr) {} + operator Base2*() { return Pointer<Base>(*this); } +}; + +} + +#endif + + +/* upb::reffed_ptr ************************************************************/ + +#ifdef __cplusplus + +#include <algorithm> // For std::swap(). + +namespace upb { + +// Provides RAII semantics for upb refcounted objects. Each reffed_ptr owns a +// ref on whatever object it points to (if any). +template <class T> class reffed_ptr { + public: + reffed_ptr() : ptr_(NULL) {} + + // If ref_donor is NULL, takes a new ref, otherwise adopts from ref_donor. + template <class U> + reffed_ptr(U* val, const void* ref_donor = NULL) + : ptr_(upb::upcast(val)) { + if (ref_donor) { + assert(ptr_); + ptr_->DonateRef(ref_donor, this); + } else if (ptr_) { + ptr_->Ref(this); + } + } + + template <class U> + reffed_ptr(const reffed_ptr<U>& other) + : ptr_(upb::upcast(other.get())) { + if (ptr_) ptr_->Ref(this); + } + + ~reffed_ptr() { if (ptr_) ptr_->Unref(this); } + + template <class U> + reffed_ptr& operator=(const reffed_ptr<U>& other) { + reset(other.get()); + return *this; + } + + reffed_ptr& operator=(const reffed_ptr& other) { + reset(other.get()); + return *this; + } + + // TODO(haberman): add C++11 move construction/assignment for greater + // efficiency. + + void swap(reffed_ptr& other) { + if (ptr_ == other.ptr_) { + return; + } + + if (ptr_) ptr_->DonateRef(this, &other); + if (other.ptr_) other.ptr_->DonateRef(&other, this); + std::swap(ptr_, other.ptr_); + } + + T& operator*() const { + assert(ptr_); + return *ptr_; + } + + T* operator->() const { + assert(ptr_); + return ptr_; + } + + T* get() const { return ptr_; } + + // If ref_donor is NULL, takes a new ref, otherwise adopts from ref_donor. + template <class U> + void reset(U* ptr = NULL, const void* ref_donor = NULL) { + reffed_ptr(ptr, ref_donor).swap(*this); + } + + template <class U> + reffed_ptr<U> down_cast() { + return reffed_ptr<U>(upb::down_cast<U*>(get())); + } + + template <class U> + reffed_ptr<U> dyn_cast() { + return reffed_ptr<U>(upb::dyn_cast<U*>(get())); + } + + // Plain release() is unsafe; if we were the only owner, it would leak the + // object. Instead we provide this: + T* ReleaseTo(const void* new_owner) { + T* ret = NULL; + ptr_->DonateRef(this, new_owner); + std::swap(ret, ptr_); + return ret; + } + + private: + T* ptr_; +}; + +} // namespace upb + +#endif // __cplusplus + + +/* upb::Status ****************************************************************/ + +#ifdef __cplusplus +namespace upb { +class ErrorSpace; +class Status; +} +#endif + +UPB_DECLARE_TYPE(upb::ErrorSpace, upb_errorspace); +UPB_DECLARE_TYPE(upb::Status, upb_status); + +// The maximum length of an error message before it will get truncated. +#define UPB_STATUS_MAX_MESSAGE 128 + +// An error callback function is used to report errors from some component. +// The function can return "true" to indicate that the component should try +// to recover and proceed, but this is not always possible. +typedef bool upb_errcb_t(void *closure, const upb_status* status); + +UPB_DEFINE_CLASS0(upb::ErrorSpace, +, +UPB_DEFINE_STRUCT0(upb_errorspace, + const char *name; + // Should the error message in the status object according to this code. + void (*set_message)(upb_status* status, int code); +)); + +// Object representing a success or failure status. +// It owns no resources and allocates no memory, so it should work +// even in OOM situations. +UPB_DEFINE_CLASS0(upb::Status, + public: + Status(); + + // Returns true if there is no error. + bool ok() const; + + // Optional error space and code, useful if the caller wants to + // programmatically check the specific kind of error. + ErrorSpace* error_space(); + int code() const; + + const char *error_message() const; + + // The error message will be truncated if it is longer than + // UPB_STATUS_MAX_MESSAGE-4. + void SetErrorMessage(const char* msg); + void SetFormattedErrorMessage(const char* fmt, ...); + + // If there is no error message already, this will use the ErrorSpace to + // populate the error message for this code. The caller can still call + // SetErrorMessage() to give a more specific message. + void SetErrorCode(ErrorSpace* space, int code); + + // Resets the status to a successful state with no message. + void Clear(); + + void CopyFrom(const Status& other); + + private: + UPB_DISALLOW_COPY_AND_ASSIGN(Status); +, +UPB_DEFINE_STRUCT0(upb_status, + bool ok_; + + // Specific status code defined by some error space (optional). + int code_; + upb_errorspace *error_space_; + + // Error message; NULL-terminated. + char msg[UPB_STATUS_MAX_MESSAGE]; +)); + +#define UPB_STATUS_INIT {true, 0, NULL, {0}} + +#ifdef __cplusplus +extern "C" { +#endif + +// The returned string is invalidated by any other call into the status. +const char *upb_status_errmsg(const upb_status *status); +bool upb_ok(const upb_status *status); +upb_errorspace *upb_status_errspace(const upb_status *status); +int upb_status_errcode(const upb_status *status); + +// Any of the functions that write to a status object allow status to be NULL, +// to support use cases where the function's caller does not care about the +// status message. +void upb_status_clear(upb_status *status); +void upb_status_seterrmsg(upb_status *status, const char *msg); +void upb_status_seterrf(upb_status *status, const char *fmt, ...); +void upb_status_vseterrf(upb_status *status, const char *fmt, va_list args); +void upb_status_seterrcode(upb_status *status, upb_errorspace *space, int code); +void upb_status_copy(upb_status *to, const upb_status *from); + +#ifdef __cplusplus +} // extern "C" + +namespace upb { + +// C++ Wrappers +inline Status::Status() { Clear(); } +inline bool Status::ok() const { return upb_ok(this); } +inline const char* Status::error_message() const { + return upb_status_errmsg(this); +} +inline void Status::SetErrorMessage(const char* msg) { + upb_status_seterrmsg(this, msg); +} +inline void Status::SetFormattedErrorMessage(const char* fmt, ...) { + va_list args; + va_start(args, fmt); + upb_status_vseterrf(this, fmt, args); + va_end(args); +} +inline void Status::SetErrorCode(ErrorSpace* space, int code) { + upb_status_seterrcode(this, space, code); +} +inline void Status::Clear() { upb_status_clear(this); } +inline void Status::CopyFrom(const Status& other) { + upb_status_copy(this, &other); +} + +} // namespace upb + +#endif + +#endif /* UPB_H_ */ + +#ifdef __cplusplus +extern "C" { +#endif + + +/* upb_value ******************************************************************/ + +// A tagged union (stored untagged inside the table) so that we can check that +// clients calling table accessors are correctly typed without having to have +// an explosion of accessors. +typedef enum { + UPB_CTYPE_INT32 = 1, + UPB_CTYPE_INT64 = 2, + UPB_CTYPE_UINT32 = 3, + UPB_CTYPE_UINT64 = 4, + UPB_CTYPE_BOOL = 5, + UPB_CTYPE_CSTR = 6, + UPB_CTYPE_PTR = 7, + UPB_CTYPE_CONSTPTR = 8, + UPB_CTYPE_FPTR = 9, +} upb_ctype_t; + +typedef union { + int32_t int32; + int64_t int64; + uint64_t uint64; + uint32_t uint32; + bool _bool; + char *cstr; + void *ptr; + const void *constptr; + upb_func *fptr; +} _upb_value; + +typedef struct { + _upb_value val; +#ifndef NDEBUG + // In debug mode we carry the value type around also so we can check accesses + // to be sure the right member is being read. + upb_ctype_t ctype; +#endif +} upb_value; + +#ifdef UPB_C99 +#define UPB_VALUE_INIT(v, member) {.member = v} +#endif +#define UPB__VALUE_INIT_NONE UPB_VALUE_INIT(NULL, ptr) + +#ifdef NDEBUG +#define SET_TYPE(dest, val) UPB_UNUSED(val) +#define UPB_VALUE_INIT_NONE {UPB__VALUE_INIT_NONE} +#else +#define SET_TYPE(dest, val) dest = val +// Non-existent type, all reads will fail. +#define UPB_VALUE_INIT_NONE {UPB__VALUE_INIT_NONE, -1} +#endif + +#define UPB_VALUE_INIT_INT32(v) UPB_VALUE_INIT(v, int32) +#define UPB_VALUE_INIT_INT64(v) UPB_VALUE_INIT(v, int64) +#define UPB_VALUE_INIT_UINT32(v) UPB_VALUE_INIT(v, uint32) +#define UPB_VALUE_INIT_UINT64(v) UPB_VALUE_INIT(v, uint64) +#define UPB_VALUE_INIT_BOOL(v) UPB_VALUE_INIT(v, _bool) +#define UPB_VALUE_INIT_CSTR(v) UPB_VALUE_INIT(v, cstr) +#define UPB_VALUE_INIT_PTR(v) UPB_VALUE_INIT(v, ptr) +#define UPB_VALUE_INIT_CONSTPTR(v) UPB_VALUE_INIT(v, constptr) +#define UPB_VALUE_INIT_FPTR(v) UPB_VALUE_INIT(v, fptr) + +// Like strdup(), which isn't always available since it's not ANSI C. +char *upb_strdup(const char *s); + +UPB_INLINE void _upb_value_setval(upb_value *v, _upb_value val, + upb_ctype_t ctype) { + v->val = val; + SET_TYPE(v->ctype, ctype); +} + +UPB_INLINE upb_value _upb_value_val(_upb_value val, upb_ctype_t ctype) { + upb_value ret; + _upb_value_setval(&ret, val, ctype); + return ret; +} + +// For each value ctype, define the following set of functions: +// +// // Get/set an int32 from a upb_value. +// int32_t upb_value_getint32(upb_value val); +// void upb_value_setint32(upb_value *val, int32_t cval); +// +// // Construct a new upb_value from an int32. +// upb_value upb_value_int32(int32_t val); +#define FUNCS(name, membername, type_t, proto_type) \ + UPB_INLINE void upb_value_set ## name(upb_value *val, type_t cval) { \ + val->val.uint64 = 0; \ + SET_TYPE(val->ctype, proto_type); \ + val->val.membername = cval; \ + } \ + UPB_INLINE upb_value upb_value_ ## name(type_t val) { \ + upb_value ret; \ + upb_value_set ## name(&ret, val); \ + return ret; \ + } \ + UPB_INLINE type_t upb_value_get ## name(upb_value val) { \ + assert(val.ctype == proto_type); \ + return val.val.membername; \ + } + +FUNCS(int32, int32, int32_t, UPB_CTYPE_INT32); +FUNCS(int64, int64, int64_t, UPB_CTYPE_INT64); +FUNCS(uint32, uint32, uint32_t, UPB_CTYPE_UINT32); +FUNCS(uint64, uint64, uint64_t, UPB_CTYPE_UINT64); +FUNCS(bool, _bool, bool, UPB_CTYPE_BOOL); +FUNCS(cstr, cstr, char*, UPB_CTYPE_CSTR); +FUNCS(ptr, ptr, void*, UPB_CTYPE_PTR); +FUNCS(constptr, constptr, const void*, UPB_CTYPE_CONSTPTR); +FUNCS(fptr, fptr, upb_func*, UPB_CTYPE_FPTR); + +#undef FUNCS + + +/* upb_table ******************************************************************/ + +typedef union { + uintptr_t num; + const char *str; // We own, nullz. +} upb_tabkey; + +#define UPB_TABKEY_NUM(n) {n} +#ifdef UPB_C99 +#define UPB_TABKEY_STR(s) {.str = s} +#endif +// TODO(haberman): C++ +#define UPB_TABKEY_NONE {0} + +typedef struct _upb_tabent { + upb_tabkey key; + _upb_value val; + // Internal chaining. This is const so we can create static initializers for + // tables. We cast away const sometimes, but *only* when the containing + // upb_table is known to be non-const. This requires a bit of care, but + // the subtlety is confined to table.c. + const struct _upb_tabent *next; +} upb_tabent; + +typedef struct { + size_t count; // Number of entries in the hash part. + size_t mask; // Mask to turn hash value -> bucket. + upb_ctype_t ctype; // Type of all values. + uint8_t size_lg2; // Size of the hash table part is 2^size_lg2 entries. + + // Hash table entries. + // Making this const isn't entirely accurate; what we really want is for it to + // have the same const-ness as the table it's inside. But there's no way to + // declare that in C. So we have to make it const so that we can statically + // initialize const hash tables. Then we cast away const when we have to. + const upb_tabent *entries; +} upb_table; + +typedef struct { + upb_table t; +} upb_strtable; + +#define UPB_STRTABLE_INIT(count, mask, ctype, size_lg2, entries) \ + {{count, mask, ctype, size_lg2, entries}} + +typedef struct { + upb_table t; // For entries that don't fit in the array part. + const _upb_value *array; // Array part of the table. See const note above. + size_t array_size; // Array part size. + size_t array_count; // Array part number of elements. +} upb_inttable; + +#define UPB_INTTABLE_INIT(count, mask, ctype, size_lg2, ent, a, asize, acount) \ + {{count, mask, ctype, size_lg2, ent}, a, asize, acount} + +#define UPB_EMPTY_INTTABLE_INIT(ctype) \ + UPB_INTTABLE_INIT(0, 0, ctype, 0, NULL, NULL, 0, 0) + +#define UPB_ARRAY_EMPTYVAL -1 +#define UPB_ARRAY_EMPTYENT UPB_VALUE_INIT_INT64(UPB_ARRAY_EMPTYVAL) + +UPB_INLINE size_t upb_table_size(const upb_table *t) { + if (t->size_lg2 == 0) + return 0; + else + return 1 << t->size_lg2; +} + +// Internal-only functions, in .h file only out of necessity. +UPB_INLINE bool upb_tabent_isempty(const upb_tabent *e) { + return e->key.num == 0; +} + +// Used by some of the unit tests for generic hashing functionality. +uint32_t MurmurHash2(const void * key, size_t len, uint32_t seed); + +UPB_INLINE upb_tabkey upb_intkey(uintptr_t key) { + upb_tabkey k; + k.num = key; + return k; +} + +UPB_INLINE uint32_t upb_inthash(uintptr_t key) { + return (uint32_t)key; +} + +static const upb_tabent *upb_getentry(const upb_table *t, uint32_t hash) { + return t->entries + (hash & t->mask); +} + +UPB_INLINE bool upb_arrhas(_upb_value v) { + return v.uint64 != (uint64_t)UPB_ARRAY_EMPTYVAL; +} + +// Initialize and uninitialize a table, respectively. If memory allocation +// failed, false is returned that the table is uninitialized. +bool upb_inttable_init(upb_inttable *table, upb_ctype_t ctype); +bool upb_strtable_init(upb_strtable *table, upb_ctype_t ctype); +void upb_inttable_uninit(upb_inttable *table); +void upb_strtable_uninit(upb_strtable *table); + +// Returns the number of values in the table. +size_t upb_inttable_count(const upb_inttable *t); +UPB_INLINE size_t upb_strtable_count(const upb_strtable *t) { + return t->t.count; +} + +// Inserts the given key into the hashtable with the given value. The key must +// not already exist in the hash table. For string tables, the key must be +// NULL-terminated, and the table will make an internal copy of the key. +// Inttables must not insert a value of UINTPTR_MAX. +// +// If a table resize was required but memory allocation failed, false is +// returned and the table is unchanged. +bool upb_inttable_insert(upb_inttable *t, uintptr_t key, upb_value val); +bool upb_strtable_insert(upb_strtable *t, const char *key, upb_value val); + +// Looks up key in this table, returning "true" if the key was found. +// If v is non-NULL, copies the value for this key into *v. +bool upb_inttable_lookup(const upb_inttable *t, uintptr_t key, upb_value *v); +bool upb_strtable_lookup2(const upb_strtable *t, const char *key, size_t len, + upb_value *v); + +// For NULL-terminated strings. +UPB_INLINE bool upb_strtable_lookup(const upb_strtable *t, const char *key, + upb_value *v) { + return upb_strtable_lookup2(t, key, strlen(key), v); +} + +// Removes an item from the table. Returns true if the remove was successful, +// and stores the removed item in *val if non-NULL. +bool upb_inttable_remove(upb_inttable *t, uintptr_t key, upb_value *val); +bool upb_strtable_remove(upb_strtable *t, const char *key, upb_value *val); + +// Updates an existing entry in an inttable. If the entry does not exist, +// returns false and does nothing. Unlike insert/remove, this does not +// invalidate iterators. +bool upb_inttable_replace(upb_inttable *t, uintptr_t key, upb_value val); + +// Handy routines for treating an inttable like a stack. May not be mixed with +// other insert/remove calls. +bool upb_inttable_push(upb_inttable *t, upb_value val); +upb_value upb_inttable_pop(upb_inttable *t); + +// Convenience routines for inttables with pointer keys. +bool upb_inttable_insertptr(upb_inttable *t, const void *key, upb_value val); +bool upb_inttable_removeptr(upb_inttable *t, const void *key, upb_value *val); +bool upb_inttable_lookupptr( + const upb_inttable *t, const void *key, upb_value *val); + +// Optimizes the table for the current set of entries, for both memory use and +// lookup time. Client should call this after all entries have been inserted; +// inserting more entries is legal, but will likely require a table resize. +void upb_inttable_compact(upb_inttable *t); + +// A special-case inlinable version of the lookup routine for 32-bit integers. +UPB_INLINE bool upb_inttable_lookup32(const upb_inttable *t, uint32_t key, + upb_value *v) { + *v = upb_value_int32(0); // Silence compiler warnings. + if (key < t->array_size) { + _upb_value arrval = t->array[key]; + if (upb_arrhas(arrval)) { + _upb_value_setval(v, arrval, t->t.ctype); + return true; + } else { + return false; + } + } else { + const upb_tabent *e; + if (t->t.entries == NULL) return false; + for (e = upb_getentry(&t->t, upb_inthash(key)); true; e = e->next) { + if ((uint32_t)e->key.num == key) { + _upb_value_setval(v, e->val, t->t.ctype); + return true; + } + if (e->next == NULL) return false; + } + } +} + +// Exposed for testing only. +bool upb_strtable_resize(upb_strtable *t, size_t size_lg2); + +/* Iterators ******************************************************************/ + +// Iterators for int and string tables. We are subject to some kind of unusual +// design constraints: +// +// For high-level languages: +// - we must be able to guarantee that we don't crash or corrupt memory even if +// the program accesses an invalidated iterator. +// +// For C++11 range-based for: +// - iterators must be copyable +// - iterators must be comparable +// - it must be possible to construct an "end" value. +// +// Iteration order is undefined. +// +// Modifying the table invalidates iterators. upb_{str,int}table_done() is +// guaranteed to work even on an invalidated iterator, as long as the table it +// is iterating over has not been freed. Calling next() or accessing data from +// an invalidated iterator yields unspecified elements from the table, but it is +// guaranteed not to crash and to return real table elements (except when done() +// is true). + + +/* upb_strtable_iter **********************************************************/ + +// upb_strtable_iter i; +// upb_strtable_begin(&i, t); +// for(; !upb_strtable_done(&i); upb_strtable_next(&i)) { +// const char *key = upb_strtable_iter_key(&i); +// const upb_value val = upb_strtable_iter_value(&i); +// // ... +// } + +typedef struct { + const upb_strtable *t; + size_t index; +} upb_strtable_iter; + +void upb_strtable_begin(upb_strtable_iter *i, const upb_strtable *t); +void upb_strtable_next(upb_strtable_iter *i); +bool upb_strtable_done(const upb_strtable_iter *i); +const char *upb_strtable_iter_key(upb_strtable_iter *i); +upb_value upb_strtable_iter_value(const upb_strtable_iter *i); +void upb_strtable_iter_setdone(upb_strtable_iter *i); +bool upb_strtable_iter_isequal(const upb_strtable_iter *i1, + const upb_strtable_iter *i2); + + +/* upb_inttable_iter **********************************************************/ + +// upb_inttable_iter i; +// upb_inttable_begin(&i, t); +// for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { +// uintptr_t key = upb_inttable_iter_key(&i); +// upb_value val = upb_inttable_iter_value(&i); +// // ... +// } + +typedef struct { + const upb_inttable *t; + size_t index; + bool array_part; +} upb_inttable_iter; + +void upb_inttable_begin(upb_inttable_iter *i, const upb_inttable *t); +void upb_inttable_next(upb_inttable_iter *i); +bool upb_inttable_done(const upb_inttable_iter *i); +uintptr_t upb_inttable_iter_key(const upb_inttable_iter *i); +upb_value upb_inttable_iter_value(const upb_inttable_iter *i); +void upb_inttable_iter_setdone(upb_inttable_iter *i); +bool upb_inttable_iter_isequal(const upb_inttable_iter *i1, + const upb_inttable_iter *i2); + + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* UPB_TABLE_H_ */ + +// Reference tracking will check ref()/unref() operations to make sure the +// ref ownership is correct. Where possible it will also make tools like +// Valgrind attribute ref leaks to the code that took the leaked ref, not +// the code that originally created the object. +// +// Enabling this requires the application to define upb_lock()/upb_unlock() +// functions that acquire/release a global mutex (or #define UPB_THREAD_UNSAFE). +#ifndef NDEBUG +#define UPB_DEBUG_REFS +#endif + +#ifdef __cplusplus +namespace upb { class RefCounted; } +#endif + +UPB_DECLARE_TYPE(upb::RefCounted, upb_refcounted); + +struct upb_refcounted_vtbl; + +UPB_DEFINE_CLASS0(upb::RefCounted, + public: + // Returns true if the given object is frozen. + bool IsFrozen() const; + + // Increases the ref count, the new ref is owned by "owner" which must not + // already own a ref (and should not itself be a refcounted object if the ref + // could possibly be circular; see below). + // Thread-safe iff "this" is frozen. + void Ref(const void *owner) const; + + // Release a ref that was acquired from upb_refcounted_ref() and collects any + // objects it can. + void Unref(const void *owner) const; + + // Moves an existing ref from "from" to "to", without changing the overall + // ref count. DonateRef(foo, NULL, owner) is the same as Ref(foo, owner), + // but "to" may not be NULL. + void DonateRef(const void *from, const void *to) const; + + // Verifies that a ref to the given object is currently held by the given + // owner. Only effective in UPB_DEBUG_REFS builds. + void CheckRef(const void *owner) const; + + private: + UPB_DISALLOW_POD_OPS(RefCounted, upb::RefCounted); +, +UPB_DEFINE_STRUCT0(upb_refcounted, + // A single reference count shared by all objects in the group. + uint32_t *group; + + // A singly-linked list of all objects in the group. + upb_refcounted *next; + + // Table of function pointers for this type. + const struct upb_refcounted_vtbl *vtbl; + + // Maintained only when mutable, this tracks the number of refs (but not + // ref2's) to this object. *group should be the sum of all individual_count + // in the group. + uint32_t individual_count; + + bool is_frozen; + +#ifdef UPB_DEBUG_REFS + upb_inttable *refs; // Maps owner -> trackedref for incoming refs. + upb_inttable *ref2s; // Set of targets for outgoing ref2s. +#endif +)); + +UPB_BEGIN_EXTERN_C // { + +// It is better to use tracked refs when possible, for the extra debugging +// capability. But if this is not possible (because you don't have easy access +// to a stable pointer value that is associated with the ref), you can pass +// UPB_UNTRACKED_REF instead. +extern const void *UPB_UNTRACKED_REF; + +// Native C API. +bool upb_refcounted_isfrozen(const upb_refcounted *r); +void upb_refcounted_ref(const upb_refcounted *r, const void *owner); +void upb_refcounted_unref(const upb_refcounted *r, const void *owner); +void upb_refcounted_donateref( + const upb_refcounted *r, const void *from, const void *to); +void upb_refcounted_checkref(const upb_refcounted *r, const void *owner); + + +// Internal-to-upb Interface /////////////////////////////////////////////////// + +typedef void upb_refcounted_visit(const upb_refcounted *r, + const upb_refcounted *subobj, + void *closure); + +struct upb_refcounted_vtbl { + // Must visit all subobjects that are currently ref'd via upb_refcounted_ref2. + // Must be longjmp()-safe. + void (*visit)(const upb_refcounted *r, upb_refcounted_visit *visit, void *c); + + // Must free the object and release all references to other objects. + void (*free)(upb_refcounted *r); +}; + +// Initializes the refcounted with a single ref for the given owner. Returns +// false if memory could not be allocated. +bool upb_refcounted_init(upb_refcounted *r, + const struct upb_refcounted_vtbl *vtbl, + const void *owner); + +// Adds a ref from one refcounted object to another ("from" must not already +// own a ref). These refs may be circular; cycles will be collected correctly +// (if conservatively). These refs do not need to be freed in from's free() +// function. +void upb_refcounted_ref2(const upb_refcounted *r, upb_refcounted *from); + +// Removes a ref that was acquired from upb_refcounted_ref2(), and collects any +// object it can. This is only necessary when "from" no longer points to "r", +// and not from from's "free" function. +void upb_refcounted_unref2(const upb_refcounted *r, upb_refcounted *from); + +#define upb_ref2(r, from) \ + upb_refcounted_ref2((const upb_refcounted*)r, (upb_refcounted*)from) +#define upb_unref2(r, from) \ + upb_refcounted_unref2((const upb_refcounted*)r, (upb_refcounted*)from) + +// Freezes all mutable object reachable by ref2() refs from the given roots. +// This will split refcounting groups into precise SCC groups, so that +// refcounting of frozen objects can be more aggressive. If memory allocation +// fails, or if more than 2**31 mutable objects are reachable from "roots", or +// if the maximum depth of the graph exceeds "maxdepth", false is returned and +// the objects are unchanged. +// +// After this operation succeeds, the objects are frozen/const, and may not be +// used through non-const pointers. In particular, they may not be passed as +// the second parameter of upb_refcounted_{ref,unref}2(). On the upside, all +// operations on frozen refcounteds are threadsafe, and objects will be freed +// at the precise moment that they become unreachable. +// +// Caller must own refs on each object in the "roots" list. +bool upb_refcounted_freeze(upb_refcounted *const*roots, int n, upb_status *s, + int maxdepth); + +// Shared by all compiled-in refcounted objects. +extern uint32_t static_refcount; + +UPB_END_EXTERN_C // } + +#ifdef UPB_DEBUG_REFS +#define UPB_REFCOUNT_INIT(refs, ref2s) \ + {&static_refcount, NULL, NULL, 0, true, refs, ref2s} +#else +#define UPB_REFCOUNT_INIT(refs, ref2s) {&static_refcount, NULL, NULL, 0, true} +#endif + +#ifdef __cplusplus +// C++ Wrappers. +namespace upb { +inline bool RefCounted::IsFrozen() const { + return upb_refcounted_isfrozen(this); +} +inline void RefCounted::Ref(const void *owner) const { + upb_refcounted_ref(this, owner); +} +inline void RefCounted::Unref(const void *owner) const { + upb_refcounted_unref(this, owner); +} +inline void RefCounted::DonateRef(const void *from, const void *to) const { + upb_refcounted_donateref(this, from, to); +} +inline void RefCounted::CheckRef(const void *owner) const { + upb_refcounted_checkref(this, owner); +} +} // namespace upb +#endif + +#endif // UPB_REFCOUNT_H_ + +#ifdef __cplusplus +#include <cstring> +#include <string> +#include <vector> + +namespace upb { +class Def; +class EnumDef; +class FieldDef; +class MessageDef; +} +#endif + +UPB_DECLARE_TYPE(upb::Def, upb_def); +UPB_DECLARE_TYPE(upb::EnumDef, upb_enumdef); +UPB_DECLARE_TYPE(upb::FieldDef, upb_fielddef); +UPB_DECLARE_TYPE(upb::MessageDef, upb_msgdef); + +// Maximum field number allowed for FieldDefs. This is an inherent limit of the +// protobuf wire format. +#define UPB_MAX_FIELDNUMBER ((1 << 29) - 1) + +// The maximum message depth that the type graph can have. This is a resource +// limit for the C stack since we sometimes need to recursively traverse the +// graph. Cycles are ok; the traversal will stop when it detects a cycle, but +// we must hit the cycle before the maximum depth is reached. +// +// If having a single static limit is too inflexible, we can add another variant +// of Def::Freeze that allows specifying this as a parameter. +#define UPB_MAX_MESSAGE_DEPTH 64 + + +/* upb::Def: base class for defs *********************************************/ + +// All the different kind of defs we support. These correspond 1:1 with +// declarations in a .proto file. +typedef enum { + UPB_DEF_MSG, + UPB_DEF_FIELD, + UPB_DEF_ENUM, + UPB_DEF_SERVICE, // Not yet implemented. + UPB_DEF_ANY = -1, // Wildcard for upb_symtab_get*() +} upb_deftype_t; + +// The base class of all defs. Its base is upb::RefCounted (use upb::upcast() +// to convert). +UPB_DEFINE_CLASS1(upb::Def, upb::RefCounted, + public: + typedef upb_deftype_t Type; + + Def* Dup(const void *owner) const; + + // Functionality from upb::RefCounted. + bool IsFrozen() const; + void Ref(const void* owner) const; + void Unref(const void* owner) const; + void DonateRef(const void* from, const void* to) const; + void CheckRef(const void* owner) const; + + Type def_type() const; + + // "fullname" is the def's fully-qualified name (eg. foo.bar.Message). + const char *full_name() const; + + // The def must be mutable. Caller retains ownership of fullname. Defs are + // not required to have a name; if a def has no name when it is frozen, it + // will remain an anonymous def. On failure, returns false and details in "s" + // if non-NULL. + bool set_full_name(const char* fullname, upb::Status* s); + bool set_full_name(const std::string &fullname, upb::Status* s); + + // Freezes the given defs; this validates all constraints and marks the defs + // as frozen (read-only). "defs" may not contain any fielddefs, but fields + // of any msgdefs will be frozen. + // + // Symbolic references to sub-types and enum defaults must have already been + // resolved. Any mutable defs reachable from any of "defs" must also be in + // the list; more formally, "defs" must be a transitive closure of mutable + // defs. + // + // After this operation succeeds, the finalized defs must only be accessed + // through a const pointer! + static bool Freeze(Def* const* defs, int n, Status* status); + static bool Freeze(const std::vector<Def*>& defs, Status* status); + + private: + UPB_DISALLOW_POD_OPS(Def, upb::Def); +, +UPB_DEFINE_STRUCT(upb_def, upb_refcounted, + const char *fullname; + upb_deftype_t type : 8; + // Used as a flag during the def's mutable stage. Must be false unless + // it is currently being used by a function on the stack. This allows + // us to easily determine which defs were passed into the function's + // current invocation. + bool came_from_user; +)); + +#define UPB_DEF_INIT(name, type, refs, ref2s) \ + { UPB_REFCOUNT_INIT(refs, ref2s), name, type, false } + +UPB_BEGIN_EXTERN_C // { + +// Native C API. +upb_def *upb_def_dup(const upb_def *def, const void *owner); + +// From upb_refcounted. +bool upb_def_isfrozen(const upb_def *def); +void upb_def_ref(const upb_def *def, const void *owner); +void upb_def_unref(const upb_def *def, const void *owner); +void upb_def_donateref(const upb_def *def, const void *from, const void *to); +void upb_def_checkref(const upb_def *def, const void *owner); + +upb_deftype_t upb_def_type(const upb_def *d); +const char *upb_def_fullname(const upb_def *d); +bool upb_def_setfullname(upb_def *def, const char *fullname, upb_status *s); +bool upb_def_freeze(upb_def *const *defs, int n, upb_status *s); + +UPB_END_EXTERN_C // } + + +/* upb::Def casts *************************************************************/ + +#ifdef __cplusplus +#define UPB_CPP_CASTS(cname, cpptype) \ + namespace upb { \ + template <> \ + inline cpptype *down_cast<cpptype *, Def>(Def * def) { \ + return upb_downcast_##cname##_mutable(def); \ + } \ + template <> \ + inline cpptype *dyn_cast<cpptype *, Def>(Def * def) { \ + return upb_dyncast_##cname##_mutable(def); \ + } \ + template <> \ + inline const cpptype *down_cast<const cpptype *, const Def>( \ + const Def *def) { \ + return upb_downcast_##cname(def); \ + } \ + template <> \ + inline const cpptype *dyn_cast<const cpptype *, const Def>(const Def *def) { \ + return upb_dyncast_##cname(def); \ + } \ + template <> \ + inline const cpptype *down_cast<const cpptype *, Def>(Def * def) { \ + return upb_downcast_##cname(def); \ + } \ + template <> \ + inline const cpptype *dyn_cast<const cpptype *, Def>(Def * def) { \ + return upb_dyncast_##cname(def); \ + } \ + } // namespace upb +#else +#define UPB_CPP_CASTS(cname, cpptype) +#endif + +// Dynamic casts, for determining if a def is of a particular type at runtime. +// Downcasts, for when some wants to assert that a def is of a particular type. +// These are only checked if we are building debug. +#define UPB_DEF_CASTS(lower, upper, cpptype) \ + UPB_INLINE const upb_##lower *upb_dyncast_##lower(const upb_def *def) { \ + if (upb_def_type(def) != UPB_DEF_##upper) return NULL; \ + return (upb_##lower *)def; \ + } \ + UPB_INLINE const upb_##lower *upb_downcast_##lower(const upb_def *def) { \ + assert(upb_def_type(def) == UPB_DEF_##upper); \ + return (const upb_##lower *)def; \ + } \ + UPB_INLINE upb_##lower *upb_dyncast_##lower##_mutable(upb_def *def) { \ + return (upb_##lower *)upb_dyncast_##lower(def); \ + } \ + UPB_INLINE upb_##lower *upb_downcast_##lower##_mutable(upb_def *def) { \ + return (upb_##lower *)upb_downcast_##lower(def); \ + } \ + UPB_CPP_CASTS(lower, cpptype) + +#define UPB_DEFINE_DEF(cppname, lower, upper, cppmethods, members) \ + UPB_DEFINE_CLASS2(cppname, upb::Def, upb::RefCounted, UPB_QUOTE(cppmethods), \ + members) \ + UPB_DEF_CASTS(lower, upper, cppname) + + +/* upb::FieldDef **************************************************************/ + +// The types a field can have. Note that this list is not identical to the +// types defined in descriptor.proto, which gives INT32 and SINT32 separate +// types (we distinguish the two with the "integer encoding" enum below). +typedef enum { + UPB_TYPE_FLOAT = 1, + UPB_TYPE_DOUBLE = 2, + UPB_TYPE_BOOL = 3, + UPB_TYPE_STRING = 4, + UPB_TYPE_BYTES = 5, + UPB_TYPE_MESSAGE = 6, + UPB_TYPE_ENUM = 7, // Enum values are int32. + UPB_TYPE_INT32 = 8, + UPB_TYPE_UINT32 = 9, + UPB_TYPE_INT64 = 10, + UPB_TYPE_UINT64 = 11, +} upb_fieldtype_t; + +// The repeated-ness of each field; this matches descriptor.proto. +typedef enum { + UPB_LABEL_OPTIONAL = 1, + UPB_LABEL_REQUIRED = 2, + UPB_LABEL_REPEATED = 3, +} upb_label_t; + +// How integers should be encoded in serializations that offer multiple +// integer encoding methods. +typedef enum { + UPB_INTFMT_VARIABLE = 1, + UPB_INTFMT_FIXED = 2, + UPB_INTFMT_ZIGZAG = 3, // Only for signed types (INT32/INT64). +} upb_intfmt_t; + +// Descriptor types, as defined in descriptor.proto. +typedef enum { + UPB_DESCRIPTOR_TYPE_DOUBLE = 1, + UPB_DESCRIPTOR_TYPE_FLOAT = 2, + UPB_DESCRIPTOR_TYPE_INT64 = 3, + UPB_DESCRIPTOR_TYPE_UINT64 = 4, + UPB_DESCRIPTOR_TYPE_INT32 = 5, + UPB_DESCRIPTOR_TYPE_FIXED64 = 6, + UPB_DESCRIPTOR_TYPE_FIXED32 = 7, + UPB_DESCRIPTOR_TYPE_BOOL = 8, + UPB_DESCRIPTOR_TYPE_STRING = 9, + UPB_DESCRIPTOR_TYPE_GROUP = 10, + UPB_DESCRIPTOR_TYPE_MESSAGE = 11, + UPB_DESCRIPTOR_TYPE_BYTES = 12, + UPB_DESCRIPTOR_TYPE_UINT32 = 13, + UPB_DESCRIPTOR_TYPE_ENUM = 14, + UPB_DESCRIPTOR_TYPE_SFIXED32 = 15, + UPB_DESCRIPTOR_TYPE_SFIXED64 = 16, + UPB_DESCRIPTOR_TYPE_SINT32 = 17, + UPB_DESCRIPTOR_TYPE_SINT64 = 18, +} upb_descriptortype_t; + + +// A upb_fielddef describes a single field in a message. It is most often +// found as a part of a upb_msgdef, but can also stand alone to represent +// an extension. +// +// Its base class is upb::Def (use upb::upcast() to convert). +UPB_DEFINE_DEF(upb::FieldDef, fielddef, FIELD, + public: + typedef upb_fieldtype_t Type; + typedef upb_label_t Label; + typedef upb_intfmt_t IntegerFormat; + typedef upb_descriptortype_t DescriptorType; + + // These return true if the given value is a valid member of the enumeration. + static bool CheckType(int32_t val); + static bool CheckLabel(int32_t val); + static bool CheckDescriptorType(int32_t val); + static bool CheckIntegerFormat(int32_t val); + + // These convert to the given enumeration; they require that the value is + // valid. + static Type ConvertType(int32_t val); + static Label ConvertLabel(int32_t val); + static DescriptorType ConvertDescriptorType(int32_t val); + static IntegerFormat ConvertIntegerFormat(int32_t val); + + // Returns NULL if memory allocation failed. + static reffed_ptr<FieldDef> New(); + + // Duplicates the given field, returning NULL if memory allocation failed. + // When a fielddef is duplicated, the subdef (if any) is made symbolic if it + // wasn't already. If the subdef is set but has no name (which is possible + // since msgdefs are not required to have a name) the new fielddef's subdef + // will be unset. + FieldDef* Dup(const void* owner) const; + + // Functionality from upb::RefCounted. + bool IsFrozen() const; + void Ref(const void* owner) const; + void Unref(const void* owner) const; + void DonateRef(const void* from, const void* to) const; + void CheckRef(const void* owner) const; + + // Functionality from upb::Def. + const char* full_name() const; + + bool type_is_set() const; // Whether set_[descriptor_]type() has been called. + Type type() const; // Requires that type_is_set() == true. + Label label() const; // Defaults to UPB_LABEL_OPTIONAL. + const char* name() const; // NULL if uninitialized. + uint32_t number() const; // Returns 0 if uninitialized. + bool is_extension() const; + + // For UPB_TYPE_MESSAGE fields only where is_tag_delimited() == false, + // indicates whether this field should have lazy parsing handlers that yield + // the unparsed string for the submessage. + // + // TODO(haberman): I think we want to move this into a FieldOptions container + // when we add support for custom options (the FieldOptions struct will + // contain both regular FieldOptions like "lazy" *and* custom options). + bool lazy() const; + + // For non-string, non-submessage fields, this indicates whether binary + // protobufs are encoded in packed or non-packed format. + // + // TODO(haberman): see note above about putting options like this into a + // FieldOptions container. + bool packed() const; + + // An integer that can be used as an index into an array of fields for + // whatever message this field belongs to. Guaranteed to be less than + // f->containing_type()->field_count(). May only be accessed once the def has + // been finalized. + int index() const; + + // The MessageDef to which this field belongs. + // + // If this field has been added to a MessageDef, that message can be retrieved + // directly (this is always the case for frozen FieldDefs). + // + // If the field has not yet been added to a MessageDef, you can set the name + // of the containing type symbolically instead. This is mostly useful for + // extensions, where the extension is declared separately from the message. + const MessageDef* containing_type() const; + const char* containing_type_name(); + + // The field's type according to the enum in descriptor.proto. This is not + // the same as UPB_TYPE_*, because it distinguishes between (for example) + // INT32 and SINT32, whereas our "type" enum does not. This return of + // descriptor_type() is a function of type(), integer_format(), and + // is_tag_delimited(). Likewise set_descriptor_type() sets all three + // appropriately. + DescriptorType descriptor_type() const; + + // Convenient field type tests. + bool IsSubMessage() const; + bool IsString() const; + bool IsSequence() const; + bool IsPrimitive() const; + + // How integers are encoded. Only meaningful for integer types. + // Defaults to UPB_INTFMT_VARIABLE, and is reset when "type" changes. + IntegerFormat integer_format() const; + + // Whether a submessage field is tag-delimited or not (if false, then + // length-delimited). May only be set when type() == UPB_TYPE_MESSAGE. + bool is_tag_delimited() const; + + // Returns the non-string default value for this fielddef, which may either + // be something the client set explicitly or the "default default" (0 for + // numbers, empty for strings). The field's type indicates the type of the + // returned value, except for enum fields that are still mutable. + // + // Requires that the given function matches the field's current type. + int64_t default_int64() const; + int32_t default_int32() const; + uint64_t default_uint64() const; + uint32_t default_uint32() const; + bool default_bool() const; + float default_float() const; + double default_double() const; + + // The resulting string is always NULL-terminated. If non-NULL, the length + // will be stored in *len. + const char *default_string(size_t* len) const; + + // For frozen UPB_TYPE_ENUM fields, enum defaults can always be read as either + // string or int32, and both of these methods will always return true. + // + // For mutable UPB_TYPE_ENUM fields, the story is a bit more complicated. + // Enum defaults are unusual. They can be specified either as string or int32, + // but to be valid the enum must have that value as a member. And if no + // default is specified, the "default default" comes from the EnumDef. + // + // We allow reading the default as either an int32 or a string, but only if + // we have a meaningful value to report. We have a meaningful value if it was + // set explicitly, or if we could get the "default default" from the EnumDef. + // Also if you explicitly set the name and we find the number in the EnumDef + bool EnumHasStringDefault() const; + bool EnumHasInt32Default() const; + + // Submessage and enum fields must reference a "subdef", which is the + // upb::MessageDef or upb::EnumDef that defines their type. Note that when + // the FieldDef is mutable it may not have a subdef *yet*, but this function + // still returns true to indicate that the field's type requires a subdef. + bool HasSubDef() const; + + // Returns the enum or submessage def for this field, if any. The field's + // type must match (ie. you may only call enum_subdef() for fields where + // type() == UPB_TYPE_ENUM). Returns NULL if the subdef has not been set or + // is currently set symbolically. + const EnumDef* enum_subdef() const; + const MessageDef* message_subdef() const; + + // Returns the generic subdef for this field. Requires that HasSubDef() (ie. + // only works for UPB_TYPE_ENUM and UPB_TYPE_MESSAGE fields). + const Def* subdef() const; + + // Returns the symbolic name of the subdef. If the subdef is currently set + // unresolved (ie. set symbolically) returns the symbolic name. If it has + // been resolved to a specific subdef, returns the name from that subdef. + const char* subdef_name() const; + + ////////////////////////////////////////////////////////////////////////////// + // Setters (non-const methods), only valid for mutable FieldDefs! + ////////////////////////////////////////////////////////////////////////////// + + bool set_full_name(const char* fullname, upb::Status* s); + bool set_full_name(const std::string& fullname, upb::Status* s); + + // This may only be called if containing_type() == NULL (ie. the field has not + // been added to a message yet). + bool set_containing_type_name(const char *name, Status* status); + bool set_containing_type_name(const std::string& name, Status* status); + + // Defaults to false. When we freeze, we ensure that this can only be true + // for length-delimited message fields. Prior to freezing this can be true or + // false with no restrictions. + void set_lazy(bool lazy); + + // Defaults to true. Sets whether this field is encoded in packed format. + void set_packed(bool packed); + + // "type" or "descriptor_type" MUST be set explicitly before the fielddef is + // finalized. These setters require that the enum value is valid; if the + // value did not come directly from an enum constant, the caller should + // validate it first with the functions above (CheckFieldType(), etc). + void set_type(Type type); + void set_label(Label label); + void set_descriptor_type(DescriptorType type); + void set_is_extension(bool is_extension); + + // "number" and "name" must be set before the FieldDef is added to a + // MessageDef, and may not be set after that. + // + // "name" is the same as full_name()/set_full_name(), but since fielddefs + // most often use simple, non-qualified names, we provide this accessor + // also. Generally only extensions will want to think of this name as + // fully-qualified. + bool set_number(uint32_t number, upb::Status* s); + bool set_name(const char* name, upb::Status* s); + bool set_name(const std::string& name, upb::Status* s); + + void set_integer_format(IntegerFormat format); + bool set_tag_delimited(bool tag_delimited, upb::Status* s); + + // Sets default value for the field. The call must exactly match the type + // of the field. Enum fields may use either setint32 or setstring to set + // the default numerically or symbolically, respectively, but symbolic + // defaults must be resolved before finalizing (see ResolveEnumDefault()). + // + // Changing the type of a field will reset its default. + void set_default_int64(int64_t val); + void set_default_int32(int32_t val); + void set_default_uint64(uint64_t val); + void set_default_uint32(uint32_t val); + void set_default_bool(bool val); + void set_default_float(float val); + void set_default_double(double val); + bool set_default_string(const void *str, size_t len, Status *s); + bool set_default_string(const std::string &str, Status *s); + void set_default_cstr(const char *str, Status *s); + + // Before a fielddef is frozen, its subdef may be set either directly (with a + // upb::Def*) or symbolically. Symbolic refs must be resolved before the + // containing msgdef can be frozen (see upb_resolve() above). upb always + // guarantees that any def reachable from a live def will also be kept alive. + // + // Both methods require that upb_hassubdef(f) (so the type must be set prior + // to calling these methods). Returns false if this is not the case, or if + // the given subdef is not of the correct type. The subdef is reset if the + // field's type is changed. The subdef can be set to NULL to clear it. + bool set_subdef(const Def* subdef, Status* s); + bool set_enum_subdef(const EnumDef* subdef, Status* s); + bool set_message_subdef(const MessageDef* subdef, Status* s); + bool set_subdef_name(const char* name, Status* s); + bool set_subdef_name(const std::string &name, Status* s); + + private: + UPB_DISALLOW_POD_OPS(FieldDef, upb::FieldDef); +, +UPB_DEFINE_STRUCT(upb_fielddef, upb_def, + union { + int64_t sint; + uint64_t uint; + double dbl; + float flt; + void *bytes; + } defaultval; + union { + const upb_msgdef *def; // If !msg_is_symbolic. + char *name; // If msg_is_symbolic. + } msg; + union { + const upb_def *def; // If !subdef_is_symbolic. + char *name; // If subdef_is_symbolic. + } sub; // The msgdef or enumdef for this field, if upb_hassubdef(f). + bool subdef_is_symbolic; + bool msg_is_symbolic; + bool default_is_string; + bool type_is_set_; // False until type is explicitly set. + bool is_extension_; + bool lazy_; + bool packed_; + upb_intfmt_t intfmt; + bool tagdelim; + upb_fieldtype_t type_; + upb_label_t label_; + uint32_t number_; + uint32_t selector_base; // Used to index into a upb::Handlers table. + uint32_t index_; +)); + +#define UPB_FIELDDEF_INIT(label, type, intfmt, tagdelim, is_extension, lazy, \ + packed, name, num, msgdef, subdef, selector_base, \ + index, defaultval, refs, ref2s) \ + { \ + UPB_DEF_INIT(name, UPB_DEF_FIELD, refs, ref2s), defaultval, {msgdef}, \ + {subdef}, false, false, \ + type == UPB_TYPE_STRING || type == UPB_TYPE_BYTES, true, is_extension, \ + lazy, packed, intfmt, tagdelim, type, label, num, selector_base, index \ + } + +UPB_BEGIN_EXTERN_C // { + +// Native C API. +upb_fielddef *upb_fielddef_new(const void *owner); +upb_fielddef *upb_fielddef_dup(const upb_fielddef *f, const void *owner); + +// From upb_refcounted. +bool upb_fielddef_isfrozen(const upb_fielddef *f); +void upb_fielddef_ref(const upb_fielddef *f, const void *owner); +void upb_fielddef_unref(const upb_fielddef *f, const void *owner); +void upb_fielddef_donateref(const upb_fielddef *f, const void *from, + const void *to); +void upb_fielddef_checkref(const upb_fielddef *f, const void *owner); + +// From upb_def. +const char *upb_fielddef_fullname(const upb_fielddef *f); +bool upb_fielddef_setfullname(upb_fielddef *f, const char *fullname, + upb_status *s); + +bool upb_fielddef_typeisset(const upb_fielddef *f); +upb_fieldtype_t upb_fielddef_type(const upb_fielddef *f); +upb_descriptortype_t upb_fielddef_descriptortype(const upb_fielddef *f); +upb_label_t upb_fielddef_label(const upb_fielddef *f); +uint32_t upb_fielddef_number(const upb_fielddef *f); +const char *upb_fielddef_name(const upb_fielddef *f); +bool upb_fielddef_isextension(const upb_fielddef *f); +bool upb_fielddef_lazy(const upb_fielddef *f); +bool upb_fielddef_packed(const upb_fielddef *f); +const upb_msgdef *upb_fielddef_containingtype(const upb_fielddef *f); +upb_msgdef *upb_fielddef_containingtype_mutable(upb_fielddef *f); +const char *upb_fielddef_containingtypename(upb_fielddef *f); +upb_intfmt_t upb_fielddef_intfmt(const upb_fielddef *f); +uint32_t upb_fielddef_index(const upb_fielddef *f); +bool upb_fielddef_istagdelim(const upb_fielddef *f); +bool upb_fielddef_issubmsg(const upb_fielddef *f); +bool upb_fielddef_isstring(const upb_fielddef *f); +bool upb_fielddef_isseq(const upb_fielddef *f); +bool upb_fielddef_isprimitive(const upb_fielddef *f); +int64_t upb_fielddef_defaultint64(const upb_fielddef *f); +int32_t upb_fielddef_defaultint32(const upb_fielddef *f); +uint64_t upb_fielddef_defaultuint64(const upb_fielddef *f); +uint32_t upb_fielddef_defaultuint32(const upb_fielddef *f); +bool upb_fielddef_defaultbool(const upb_fielddef *f); +float upb_fielddef_defaultfloat(const upb_fielddef *f); +double upb_fielddef_defaultdouble(const upb_fielddef *f); +const char *upb_fielddef_defaultstr(const upb_fielddef *f, size_t *len); +bool upb_fielddef_enumhasdefaultint32(const upb_fielddef *f); +bool upb_fielddef_enumhasdefaultstr(const upb_fielddef *f); +bool upb_fielddef_hassubdef(const upb_fielddef *f); +const upb_def *upb_fielddef_subdef(const upb_fielddef *f); +const upb_msgdef *upb_fielddef_msgsubdef(const upb_fielddef *f); +const upb_enumdef *upb_fielddef_enumsubdef(const upb_fielddef *f); +const char *upb_fielddef_subdefname(const upb_fielddef *f); + +void upb_fielddef_settype(upb_fielddef *f, upb_fieldtype_t type); +void upb_fielddef_setdescriptortype(upb_fielddef *f, int type); +void upb_fielddef_setlabel(upb_fielddef *f, upb_label_t label); +bool upb_fielddef_setnumber(upb_fielddef *f, uint32_t number, upb_status *s); +bool upb_fielddef_setname(upb_fielddef *f, const char *name, upb_status *s); +bool upb_fielddef_setcontainingtypename(upb_fielddef *f, const char *name, + upb_status *s); +void upb_fielddef_setisextension(upb_fielddef *f, bool is_extension); +void upb_fielddef_setlazy(upb_fielddef *f, bool lazy); +void upb_fielddef_setpacked(upb_fielddef *f, bool packed); +void upb_fielddef_setintfmt(upb_fielddef *f, upb_intfmt_t fmt); +void upb_fielddef_settagdelim(upb_fielddef *f, bool tag_delim); +void upb_fielddef_setdefaultint64(upb_fielddef *f, int64_t val); +void upb_fielddef_setdefaultint32(upb_fielddef *f, int32_t val); +void upb_fielddef_setdefaultuint64(upb_fielddef *f, uint64_t val); +void upb_fielddef_setdefaultuint32(upb_fielddef *f, uint32_t val); +void upb_fielddef_setdefaultbool(upb_fielddef *f, bool val); +void upb_fielddef_setdefaultfloat(upb_fielddef *f, float val); +void upb_fielddef_setdefaultdouble(upb_fielddef *f, double val); +bool upb_fielddef_setdefaultstr(upb_fielddef *f, const void *str, size_t len, + upb_status *s); +void upb_fielddef_setdefaultcstr(upb_fielddef *f, const char *str, + upb_status *s); +bool upb_fielddef_setsubdef(upb_fielddef *f, const upb_def *subdef, + upb_status *s); +bool upb_fielddef_setmsgsubdef(upb_fielddef *f, const upb_msgdef *subdef, + upb_status *s); +bool upb_fielddef_setenumsubdef(upb_fielddef *f, const upb_enumdef *subdef, + upb_status *s); +bool upb_fielddef_setsubdefname(upb_fielddef *f, const char *name, + upb_status *s); + +bool upb_fielddef_checklabel(int32_t label); +bool upb_fielddef_checktype(int32_t type); +bool upb_fielddef_checkdescriptortype(int32_t type); +bool upb_fielddef_checkintfmt(int32_t fmt); + +UPB_END_EXTERN_C // } + + +/* upb::MessageDef ************************************************************/ + +typedef upb_inttable_iter upb_msg_iter; + +// Structure that describes a single .proto message type. +// +// Its base class is upb::Def (use upb::upcast() to convert). +UPB_DEFINE_DEF(upb::MessageDef, msgdef, MSG, UPB_QUOTE( + public: + // Returns NULL if memory allocation failed. + static reffed_ptr<MessageDef> New(); + + // Functionality from upb::RefCounted. + bool IsFrozen() const; + void Ref(const void* owner) const; + void Unref(const void* owner) const; + void DonateRef(const void* from, const void* to) const; + void CheckRef(const void* owner) const; + + // Functionality from upb::Def. + const char* full_name() const; + bool set_full_name(const char* fullname, Status* s); + bool set_full_name(const std::string& fullname, Status* s); + + // Call to freeze this MessageDef. + // WARNING: this will fail if this message has any unfrozen submessages! + // Messages with cycles must be frozen as a batch using upb::Def::Freeze(). + bool Freeze(Status* s); + + // The number of fields that belong to the MessageDef. + int field_count() const; + + // Adds a field (upb_fielddef object) to a msgdef. Requires that the msgdef + // and the fielddefs are mutable. The fielddef's name and number must be + // set, and the message may not already contain any field with this name or + // number, and this fielddef may not be part of another message. In error + // cases false is returned and the msgdef is unchanged. + bool AddField(FieldDef* f, Status* s); + bool AddField(const reffed_ptr<FieldDef>& f, Status* s); + + // These return NULL if the field is not found. + FieldDef* FindFieldByNumber(uint32_t number); + FieldDef* FindFieldByName(const char *name, size_t len); + const FieldDef* FindFieldByNumber(uint32_t number) const; + const FieldDef* FindFieldByName(const char* name, size_t len) const; + + + FieldDef* FindFieldByName(const char *name) { + return FindFieldByName(name, strlen(name)); + } + const FieldDef* FindFieldByName(const char *name) const { + return FindFieldByName(name, strlen(name)); + } + + template <class T> + FieldDef* FindFieldByName(const T& str) { + return FindFieldByName(str.c_str(), str.size()); + } + template <class T> + const FieldDef* FindFieldByName(const T& str) const { + return FindFieldByName(str.c_str(), str.size()); + } + + // Returns a new msgdef that is a copy of the given msgdef (and a copy of all + // the fields) but with any references to submessages broken and replaced + // with just the name of the submessage. Returns NULL if memory allocation + // failed. + // + // TODO(haberman): which is more useful, keeping fields resolved or + // unresolving them? If there's no obvious answer, Should this functionality + // just be moved into symtab.c? + MessageDef* Dup(const void* owner) const; + + // Iteration over fields. The order is undefined. + class iterator : public std::iterator<std::forward_iterator_tag, FieldDef*> { + public: + explicit iterator(MessageDef* md); + static iterator end(MessageDef* md); + + void operator++(); + FieldDef* operator*() const; + bool operator!=(const iterator& other) const; + bool operator==(const iterator& other) const; + + private: + upb_msg_iter iter_; + }; + + class const_iterator + : public std::iterator<std::forward_iterator_tag, const FieldDef*> { + public: + explicit const_iterator(const MessageDef* md); + static const_iterator end(const MessageDef* md); + + void operator++(); + const FieldDef* operator*() const; + bool operator!=(const const_iterator& other) const; + bool operator==(const const_iterator& other) const; + + private: + upb_msg_iter iter_; + }; + + iterator begin(); + iterator end(); + const_iterator begin() const; + const_iterator end() const; + + private: + UPB_DISALLOW_POD_OPS(MessageDef, upb::MessageDef); +), +UPB_DEFINE_STRUCT(upb_msgdef, upb_def, + size_t selector_count; + uint32_t submsg_field_count; + + // Tables for looking up fields by number and name. + upb_inttable itof; // int to field + upb_strtable ntof; // name to field + + // TODO(haberman): proper extension ranges (there can be multiple). +)); + +#define UPB_MSGDEF_INIT(name, selector_count, submsg_field_count, itof, ntof, \ + refs, ref2s) \ + { \ + UPB_DEF_INIT(name, UPB_DEF_MSG, refs, ref2s), selector_count, \ + submsg_field_count, itof, ntof \ + } + +UPB_BEGIN_EXTERN_C // { + +// Returns NULL if memory allocation failed. +upb_msgdef *upb_msgdef_new(const void *owner); + +// From upb_refcounted. +bool upb_msgdef_isfrozen(const upb_msgdef *m); +void upb_msgdef_ref(const upb_msgdef *m, const void *owner); +void upb_msgdef_unref(const upb_msgdef *m, const void *owner); +void upb_msgdef_donateref(const upb_msgdef *m, const void *from, + const void *to); +void upb_msgdef_checkref(const upb_msgdef *m, const void *owner); +bool upb_msgdef_freeze(upb_msgdef *m, upb_status *status); + +// From upb_def. +const char *upb_msgdef_fullname(const upb_msgdef *m); +bool upb_msgdef_setfullname(upb_msgdef *m, const char *fullname, upb_status *s); + +upb_msgdef *upb_msgdef_dup(const upb_msgdef *m, const void *owner); +bool upb_msgdef_addfield(upb_msgdef *m, upb_fielddef *f, const void *ref_donor, + upb_status *s); + +// Field lookup in a couple of different variations: +// - itof = int to field +// - ntof = name to field +// - ntofz = name to field, null-terminated string. +const upb_fielddef *upb_msgdef_itof(const upb_msgdef *m, uint32_t i); +const upb_fielddef *upb_msgdef_ntof(const upb_msgdef *m, const char *name, + size_t len); +int upb_msgdef_numfields(const upb_msgdef *m); + +UPB_INLINE const upb_fielddef *upb_msgdef_ntofz(const upb_msgdef *m, + const char *name) { + return upb_msgdef_ntof(m, name, strlen(name)); +} + +UPB_INLINE upb_fielddef *upb_msgdef_itof_mutable(upb_msgdef *m, uint32_t i) { + return (upb_fielddef*)upb_msgdef_itof(m, i); +} + +UPB_INLINE upb_fielddef *upb_msgdef_ntof_mutable(upb_msgdef *m, + const char *name, size_t len) { + return (upb_fielddef *)upb_msgdef_ntof(m, name, len); +} + +// upb_msg_iter i; +// for(upb_msg_begin(&i, m); !upb_msg_done(&i); upb_msg_next(&i)) { +// upb_fielddef *f = upb_msg_iter_field(&i); +// // ... +// } +// +// For C we don't have separate iterators for const and non-const. +// It is the caller's responsibility to cast the upb_fielddef* to +// const if the upb_msgdef* is const. +void upb_msg_begin(upb_msg_iter *iter, const upb_msgdef *m); +void upb_msg_next(upb_msg_iter *iter); +bool upb_msg_done(const upb_msg_iter *iter); +upb_fielddef *upb_msg_iter_field(const upb_msg_iter *iter); +void upb_msg_iter_setdone(upb_msg_iter *iter); + +UPB_END_EXTERN_C // } + + +/* upb::EnumDef ***************************************************************/ + +typedef upb_strtable_iter upb_enum_iter; + +// Class that represents an enum. Its base class is upb::Def (convert with +// upb::upcast()). +UPB_DEFINE_DEF(upb::EnumDef, enumdef, ENUM, + public: + // Returns NULL if memory allocation failed. + static reffed_ptr<EnumDef> New(); + + // Functionality from upb::RefCounted. + bool IsFrozen() const; + void Ref(const void* owner) const; + void Unref(const void* owner) const; + void DonateRef(const void* from, const void* to) const; + void CheckRef(const void* owner) const; + + // Functionality from upb::Def. + const char* full_name() const; + bool set_full_name(const char* fullname, Status* s); + bool set_full_name(const std::string& fullname, Status* s); + + // Call to freeze this EnumDef. + bool Freeze(Status* s); + + // The value that is used as the default when no field default is specified. + // If not set explicitly, the first value that was added will be used. + // The default value must be a member of the enum. + // Requires that value_count() > 0. + int32_t default_value() const; + + // Sets the default value. If this value is not valid, returns false and an + // error message in status. + bool set_default_value(int32_t val, Status* status); + + // Returns the number of values currently defined in the enum. Note that + // multiple names can refer to the same number, so this may be greater than + // the total number of unique numbers. + int value_count() const; + + // Adds a single name/number pair to the enum. Fails if this name has + // already been used by another value. + bool AddValue(const char* name, int32_t num, Status* status); + bool AddValue(const std::string& name, int32_t num, Status* status); + + // Lookups from name to integer, returning true if found. + bool FindValueByName(const char* name, int32_t* num) const; + + // Finds the name corresponding to the given number, or NULL if none was + // found. If more than one name corresponds to this number, returns the + // first one that was added. + const char* FindValueByNumber(int32_t num) const; + + // Returns a new EnumDef with all the same values. The new EnumDef will be + // owned by the given owner. + EnumDef* Dup(const void* owner) const; + + // Iteration over name/value pairs. The order is undefined. + // Adding an enum val invalidates any iterators. + // + // TODO: make compatible with range-for, with elements as pairs? + class Iterator { + public: + explicit Iterator(const EnumDef*); + + int32_t number(); + const char *name(); + bool Done(); + void Next(); + + private: + upb_enum_iter iter_; + }; + + private: + UPB_DISALLOW_POD_OPS(EnumDef, upb::EnumDef); +, +UPB_DEFINE_STRUCT(upb_enumdef, upb_def, + upb_strtable ntoi; + upb_inttable iton; + int32_t defaultval; +)); + +#define UPB_ENUMDEF_INIT(name, ntoi, iton, defaultval, refs, ref2s) \ + { UPB_DEF_INIT(name, UPB_DEF_ENUM, refs, ref2s), ntoi, iton, defaultval } + +UPB_BEGIN_EXTERN_C // { + +// Native C API. +upb_enumdef *upb_enumdef_new(const void *owner); +upb_enumdef *upb_enumdef_dup(const upb_enumdef *e, const void *owner); + +// From upb_refcounted. +void upb_enumdef_unref(const upb_enumdef *e, const void *owner); +bool upb_enumdef_isfrozen(const upb_enumdef *e); +void upb_enumdef_ref(const upb_enumdef *e, const void *owner); +void upb_enumdef_donateref(const upb_enumdef *m, const void *from, + const void *to); +void upb_enumdef_checkref(const upb_enumdef *e, const void *owner); +bool upb_enumdef_freeze(upb_enumdef *e, upb_status *status); + +// From upb_def. +const char *upb_enumdef_fullname(const upb_enumdef *e); +bool upb_enumdef_setfullname(upb_enumdef *e, const char *fullname, + upb_status *s); + +int32_t upb_enumdef_default(const upb_enumdef *e); +bool upb_enumdef_setdefault(upb_enumdef *e, int32_t val, upb_status *s); +int upb_enumdef_numvals(const upb_enumdef *e); +bool upb_enumdef_addval(upb_enumdef *e, const char *name, int32_t num, + upb_status *status); + +// Enum lookups: +// - ntoi: look up a name with specified length. +// - ntoiz: look up a name provided as a null-terminated string. +// - iton: look up an integer, returning the name as a null-terminated string. +bool upb_enumdef_ntoi(const upb_enumdef *e, const char *name, size_t len, + int32_t *num); +UPB_INLINE bool upb_enumdef_ntoiz(const upb_enumdef *e, + const char *name, int32_t *num) { + return upb_enumdef_ntoi(e, name, strlen(name), num); +} +const char *upb_enumdef_iton(const upb_enumdef *e, int32_t num); + +// upb_enum_iter i; +// for(upb_enum_begin(&i, e); !upb_enum_done(&i); upb_enum_next(&i)) { +// // ... +// } +void upb_enum_begin(upb_enum_iter *iter, const upb_enumdef *e); +void upb_enum_next(upb_enum_iter *iter); +bool upb_enum_done(upb_enum_iter *iter); +const char *upb_enum_iter_name(upb_enum_iter *iter); +int32_t upb_enum_iter_number(upb_enum_iter *iter); + +UPB_END_EXTERN_C // } + + +#ifdef __cplusplus + +UPB_INLINE const char* upb_safecstr(const std::string& str) { + assert(str.size() == std::strlen(str.c_str())); + return str.c_str(); +} + +// Inline C++ wrappers. +namespace upb { + +inline Def* Def::Dup(const void* owner) const { + return upb_def_dup(this, owner); +} +inline bool Def::IsFrozen() const { return upb_def_isfrozen(this); } +inline void Def::Ref(const void* owner) const { upb_def_ref(this, owner); } +inline void Def::Unref(const void* owner) const { upb_def_unref(this, owner); } +inline void Def::DonateRef(const void* from, const void* to) const { + upb_def_donateref(this, from, to); +} +inline void Def::CheckRef(const void* owner) const { + upb_def_checkref(this, owner); +} +inline Def::Type Def::def_type() const { return upb_def_type(this); } +inline const char* Def::full_name() const { return upb_def_fullname(this); } +inline bool Def::set_full_name(const char* fullname, Status* s) { + return upb_def_setfullname(this, fullname, s); +} +inline bool Def::set_full_name(const std::string& fullname, Status* s) { + return upb_def_setfullname(this, upb_safecstr(fullname), s); +} +inline bool Def::Freeze(Def* const* defs, int n, Status* status) { + return upb_def_freeze(defs, n, status); +} +inline bool Def::Freeze(const std::vector<Def*>& defs, Status* status) { + return upb_def_freeze((Def* const*)&defs[0], defs.size(), status); +} + +inline bool FieldDef::CheckType(int32_t val) { + return upb_fielddef_checktype(val); +} +inline bool FieldDef::CheckLabel(int32_t val) { + return upb_fielddef_checklabel(val); +} +inline bool FieldDef::CheckDescriptorType(int32_t val) { + return upb_fielddef_checkdescriptortype(val); +} +inline bool FieldDef::CheckIntegerFormat(int32_t val) { + return upb_fielddef_checkintfmt(val); +} +inline FieldDef::Type FieldDef::ConvertType(int32_t val) { + assert(CheckType(val)); + return static_cast<FieldDef::Type>(val); +} +inline FieldDef::Label FieldDef::ConvertLabel(int32_t val) { + assert(CheckLabel(val)); + return static_cast<FieldDef::Label>(val); +} +inline FieldDef::DescriptorType FieldDef::ConvertDescriptorType(int32_t val) { + assert(CheckDescriptorType(val)); + return static_cast<FieldDef::DescriptorType>(val); +} +inline FieldDef::IntegerFormat FieldDef::ConvertIntegerFormat(int32_t val) { + assert(CheckIntegerFormat(val)); + return static_cast<FieldDef::IntegerFormat>(val); +} + +inline reffed_ptr<FieldDef> FieldDef::New() { + upb_fielddef *f = upb_fielddef_new(&f); + return reffed_ptr<FieldDef>(f, &f); +} +inline FieldDef* FieldDef::Dup(const void* owner) const { + return upb_fielddef_dup(this, owner); +} +inline bool FieldDef::IsFrozen() const { return upb_fielddef_isfrozen(this); } +inline void FieldDef::Ref(const void* owner) const { + upb_fielddef_ref(this, owner); +} +inline void FieldDef::Unref(const void* owner) const { + upb_fielddef_unref(this, owner); +} +inline void FieldDef::DonateRef(const void* from, const void* to) const { + upb_fielddef_donateref(this, from, to); +} +inline void FieldDef::CheckRef(const void* owner) const { + upb_fielddef_checkref(this, owner); +} +inline const char* FieldDef::full_name() const { + return upb_fielddef_fullname(this); +} +inline bool FieldDef::set_full_name(const char* fullname, Status* s) { + return upb_fielddef_setfullname(this, fullname, s); +} +inline bool FieldDef::set_full_name(const std::string& fullname, Status* s) { + return upb_fielddef_setfullname(this, upb_safecstr(fullname), s); +} +inline bool FieldDef::type_is_set() const { + return upb_fielddef_typeisset(this); +} +inline FieldDef::Type FieldDef::type() const { return upb_fielddef_type(this); } +inline FieldDef::DescriptorType FieldDef::descriptor_type() const { + return upb_fielddef_descriptortype(this); +} +inline FieldDef::Label FieldDef::label() const { + return upb_fielddef_label(this); +} +inline uint32_t FieldDef::number() const { return upb_fielddef_number(this); } +inline const char* FieldDef::name() const { return upb_fielddef_name(this); } +inline bool FieldDef::is_extension() const { + return upb_fielddef_isextension(this); +} +inline bool FieldDef::lazy() const { + return upb_fielddef_lazy(this); +} +inline void FieldDef::set_lazy(bool lazy) { + upb_fielddef_setlazy(this, lazy); +} +inline bool FieldDef::packed() const { + return upb_fielddef_packed(this); +} +inline void FieldDef::set_packed(bool packed) { + upb_fielddef_setpacked(this, packed); +} +inline const MessageDef* FieldDef::containing_type() const { + return upb_fielddef_containingtype(this); +} +inline const char* FieldDef::containing_type_name() { + return upb_fielddef_containingtypename(this); +} +inline bool FieldDef::set_number(uint32_t number, Status* s) { + return upb_fielddef_setnumber(this, number, s); +} +inline bool FieldDef::set_name(const char *name, Status* s) { + return upb_fielddef_setname(this, name, s); +} +inline bool FieldDef::set_name(const std::string& name, Status* s) { + return upb_fielddef_setname(this, upb_safecstr(name), s); +} +inline bool FieldDef::set_containing_type_name(const char *name, Status* s) { + return upb_fielddef_setcontainingtypename(this, name, s); +} +inline bool FieldDef::set_containing_type_name(const std::string &name, + Status *s) { + return upb_fielddef_setcontainingtypename(this, upb_safecstr(name), s); +} +inline void FieldDef::set_type(upb_fieldtype_t type) { + upb_fielddef_settype(this, type); +} +inline void FieldDef::set_is_extension(bool is_extension) { + upb_fielddef_setisextension(this, is_extension); +} +inline void FieldDef::set_descriptor_type(FieldDef::DescriptorType type) { + upb_fielddef_setdescriptortype(this, type); +} +inline void FieldDef::set_label(upb_label_t label) { + upb_fielddef_setlabel(this, label); +} +inline bool FieldDef::IsSubMessage() const { + return upb_fielddef_issubmsg(this); +} +inline bool FieldDef::IsString() const { return upb_fielddef_isstring(this); } +inline bool FieldDef::IsSequence() const { return upb_fielddef_isseq(this); } +inline int64_t FieldDef::default_int64() const { + return upb_fielddef_defaultint64(this); +} +inline int32_t FieldDef::default_int32() const { + return upb_fielddef_defaultint32(this); +} +inline uint64_t FieldDef::default_uint64() const { + return upb_fielddef_defaultuint64(this); +} +inline uint32_t FieldDef::default_uint32() const { + return upb_fielddef_defaultuint32(this); +} +inline bool FieldDef::default_bool() const { + return upb_fielddef_defaultbool(this); +} +inline float FieldDef::default_float() const { + return upb_fielddef_defaultfloat(this); +} +inline double FieldDef::default_double() const { + return upb_fielddef_defaultdouble(this); +} +inline const char* FieldDef::default_string(size_t* len) const { + return upb_fielddef_defaultstr(this, len); +} +inline void FieldDef::set_default_int64(int64_t value) { + upb_fielddef_setdefaultint64(this, value); +} +inline void FieldDef::set_default_int32(int32_t value) { + upb_fielddef_setdefaultint32(this, value); +} +inline void FieldDef::set_default_uint64(uint64_t value) { + upb_fielddef_setdefaultuint64(this, value); +} +inline void FieldDef::set_default_uint32(uint32_t value) { + upb_fielddef_setdefaultuint32(this, value); +} +inline void FieldDef::set_default_bool(bool value) { + upb_fielddef_setdefaultbool(this, value); +} +inline void FieldDef::set_default_float(float value) { + upb_fielddef_setdefaultfloat(this, value); +} +inline void FieldDef::set_default_double(double value) { + upb_fielddef_setdefaultdouble(this, value); +} +inline bool FieldDef::set_default_string(const void *str, size_t len, + Status *s) { + return upb_fielddef_setdefaultstr(this, str, len, s); +} +inline bool FieldDef::set_default_string(const std::string& str, Status* s) { + return upb_fielddef_setdefaultstr(this, str.c_str(), str.size(), s); +} +inline void FieldDef::set_default_cstr(const char* str, Status* s) { + return upb_fielddef_setdefaultcstr(this, str, s); +} +inline bool FieldDef::HasSubDef() const { return upb_fielddef_hassubdef(this); } +inline const Def* FieldDef::subdef() const { return upb_fielddef_subdef(this); } +inline const MessageDef *FieldDef::message_subdef() const { + return upb_fielddef_msgsubdef(this); +} +inline const EnumDef *FieldDef::enum_subdef() const { + return upb_fielddef_enumsubdef(this); +} +inline const char* FieldDef::subdef_name() const { + return upb_fielddef_subdefname(this); +} +inline bool FieldDef::set_subdef(const Def* subdef, Status* s) { + return upb_fielddef_setsubdef(this, subdef, s); +} +inline bool FieldDef::set_enum_subdef(const EnumDef* subdef, Status* s) { + return upb_fielddef_setenumsubdef(this, subdef, s); +} +inline bool FieldDef::set_message_subdef(const MessageDef* subdef, Status* s) { + return upb_fielddef_setmsgsubdef(this, subdef, s); +} +inline bool FieldDef::set_subdef_name(const char* name, Status* s) { + return upb_fielddef_setsubdefname(this, name, s); +} +inline bool FieldDef::set_subdef_name(const std::string& name, Status* s) { + return upb_fielddef_setsubdefname(this, upb_safecstr(name), s); +} + +inline reffed_ptr<MessageDef> MessageDef::New() { + upb_msgdef *m = upb_msgdef_new(&m); + return reffed_ptr<MessageDef>(m, &m); +} +inline bool MessageDef::IsFrozen() const { return upb_msgdef_isfrozen(this); } +inline void MessageDef::Ref(const void* owner) const { + return upb_msgdef_ref(this, owner); +} +inline void MessageDef::Unref(const void* owner) const { + return upb_msgdef_unref(this, owner); +} +inline void MessageDef::DonateRef(const void* from, const void* to) const { + return upb_msgdef_donateref(this, from, to); +} +inline void MessageDef::CheckRef(const void* owner) const { + return upb_msgdef_checkref(this, owner); +} +inline const char *MessageDef::full_name() const { + return upb_msgdef_fullname(this); +} +inline bool MessageDef::set_full_name(const char* fullname, Status* s) { + return upb_msgdef_setfullname(this, fullname, s); +} +inline bool MessageDef::set_full_name(const std::string& fullname, Status* s) { + return upb_msgdef_setfullname(this, upb_safecstr(fullname), s); +} +inline bool MessageDef::Freeze(Status* status) { + return upb_msgdef_freeze(this, status); +} +inline int MessageDef::field_count() const { + return upb_msgdef_numfields(this); +} +inline bool MessageDef::AddField(upb_fielddef* f, Status* s) { + return upb_msgdef_addfield(this, f, NULL, s); +} +inline bool MessageDef::AddField(const reffed_ptr<FieldDef>& f, Status* s) { + return upb_msgdef_addfield(this, f.get(), NULL, s); +} +inline FieldDef* MessageDef::FindFieldByNumber(uint32_t number) { + return upb_msgdef_itof_mutable(this, number); +} +inline FieldDef* MessageDef::FindFieldByName(const char* name, size_t len) { + return upb_msgdef_ntof_mutable(this, name, len); +} +inline const FieldDef* MessageDef::FindFieldByNumber(uint32_t number) const { + return upb_msgdef_itof(this, number); +} +inline const FieldDef *MessageDef::FindFieldByName(const char *name, + size_t len) const { + return upb_msgdef_ntof(this, name, len); +} +inline MessageDef* MessageDef::Dup(const void *owner) const { + return upb_msgdef_dup(this, owner); +} +inline MessageDef::iterator MessageDef::begin() { return iterator(this); } +inline MessageDef::iterator MessageDef::end() { return iterator::end(this); } +inline MessageDef::const_iterator MessageDef::begin() const { + return const_iterator(this); +} +inline MessageDef::const_iterator MessageDef::end() const { + return const_iterator::end(this); +} + +inline MessageDef::iterator::iterator(MessageDef* md) { + upb_msg_begin(&iter_, md); +} +inline MessageDef::iterator MessageDef::iterator::end(MessageDef* md) { + MessageDef::iterator iter(md); + upb_msg_iter_setdone(&iter.iter_); + return iter; +} +inline FieldDef* MessageDef::iterator::operator*() const { + return upb_msg_iter_field(&iter_); +} +inline void MessageDef::iterator::operator++() { return upb_msg_next(&iter_); } +inline bool MessageDef::iterator::operator==(const iterator &other) const { + return upb_inttable_iter_isequal(&iter_, &other.iter_); +} +inline bool MessageDef::iterator::operator!=(const iterator &other) const { + return !(*this == other); +} + +inline MessageDef::const_iterator::const_iterator(const MessageDef* md) { + upb_msg_begin(&iter_, md); +} +inline MessageDef::const_iterator MessageDef::const_iterator::end( + const MessageDef *md) { + MessageDef::const_iterator iter(md); + upb_msg_iter_setdone(&iter.iter_); + return iter; +} +inline const FieldDef* MessageDef::const_iterator::operator*() const { + return upb_msg_iter_field(&iter_); +} +inline void MessageDef::const_iterator::operator++() { + return upb_msg_next(&iter_); +} +inline bool MessageDef::const_iterator::operator==( + const const_iterator &other) const { + return upb_inttable_iter_isequal(&iter_, &other.iter_); +} +inline bool MessageDef::const_iterator::operator!=( + const const_iterator &other) const { + return !(*this == other); +} + +inline reffed_ptr<EnumDef> EnumDef::New() { + upb_enumdef *e = upb_enumdef_new(&e); + return reffed_ptr<EnumDef>(e, &e); +} +inline bool EnumDef::IsFrozen() const { return upb_enumdef_isfrozen(this); } +inline void EnumDef::Ref(const void* owner) const { + return upb_enumdef_ref(this, owner); +} +inline void EnumDef::Unref(const void* owner) const { + return upb_enumdef_unref(this, owner); +} +inline void EnumDef::DonateRef(const void* from, const void* to) const { + return upb_enumdef_donateref(this, from, to); +} +inline void EnumDef::CheckRef(const void* owner) const { + return upb_enumdef_checkref(this, owner); +} +inline const char* EnumDef::full_name() const { + return upb_enumdef_fullname(this); +} +inline bool EnumDef::set_full_name(const char* fullname, Status* s) { + return upb_enumdef_setfullname(this, fullname, s); +} +inline bool EnumDef::set_full_name(const std::string& fullname, Status* s) { + return upb_enumdef_setfullname(this, upb_safecstr(fullname), s); +} +inline bool EnumDef::Freeze(Status* status) { + return upb_enumdef_freeze(this, status); +} +inline int32_t EnumDef::default_value() const { + return upb_enumdef_default(this); +} +inline bool EnumDef::set_default_value(int32_t val, Status* status) { + return upb_enumdef_setdefault(this, val, status); +} +inline int EnumDef::value_count() const { return upb_enumdef_numvals(this); } +inline bool EnumDef::AddValue(const char* name, int32_t num, Status* status) { + return upb_enumdef_addval(this, name, num, status); +} +inline bool EnumDef::AddValue(const std::string& name, int32_t num, + Status* status) { + return upb_enumdef_addval(this, upb_safecstr(name), num, status); +} +inline bool EnumDef::FindValueByName(const char* name, int32_t *num) const { + return upb_enumdef_ntoiz(this, name, num); +} +inline const char* EnumDef::FindValueByNumber(int32_t num) const { + return upb_enumdef_iton(this, num); +} +inline EnumDef* EnumDef::Dup(const void* owner) const { + return upb_enumdef_dup(this, owner); +} + +inline EnumDef::Iterator::Iterator(const EnumDef* e) { + upb_enum_begin(&iter_, e); +} +inline int32_t EnumDef::Iterator::number() { + return upb_enum_iter_number(&iter_); +} +inline const char* EnumDef::Iterator::name() { + return upb_enum_iter_name(&iter_); +} +inline bool EnumDef::Iterator::Done() { return upb_enum_done(&iter_); } +inline void EnumDef::Iterator::Next() { return upb_enum_next(&iter_); } +} // namespace upb +#endif + +#undef UPB_DEFINE_DEF +#undef UPB_DEF_CASTS +#undef UPB_CPP_CASTS + +#endif /* UPB_DEF_H_ */ +// This file contains accessors for a set of compiled-in defs. +// Note that unlike Google's protobuf, it does *not* define +// generated classes or any other kind of data structure for +// actually storing protobufs. It only contains *defs* which +// let you reflect over a protobuf *schema*. +// +// This file was generated by upbc (the upb compiler). +// Do not edit -- your changes will be discarded when the file is +// regenerated. + +#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_UPB_H_ +#define GOOGLE_PROTOBUF_DESCRIPTOR_UPB_H_ + +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * A symtab (symbol table) stores a name->def map of upb_defs. Clients could + * always create such tables themselves, but upb_symtab has logic for resolving + * symbolic references, and in particular, for keeping a whole set of consistent + * defs when replacing some subset of those defs. This logic is nontrivial. + * + * This is a mixed C/C++ interface that offers a full API to both languages. + * See the top-level README for more information. + */ + +#ifndef UPB_SYMTAB_H_ +#define UPB_SYMTAB_H_ + + +#ifdef __cplusplus +#include <vector> +namespace upb { class SymbolTable; } +#endif + +UPB_DECLARE_TYPE(upb::SymbolTable, upb_symtab); + +typedef struct { + UPB_PRIVATE_FOR_CPP + upb_strtable_iter iter; + upb_deftype_t type; +} upb_symtab_iter; + +// Non-const methods in upb::SymbolTable are NOT thread-safe. +UPB_DEFINE_CLASS1(upb::SymbolTable, upb::RefCounted, + public: + // Returns a new symbol table with a single ref owned by "owner." + // Returns NULL if memory allocation failed. + static reffed_ptr<SymbolTable> New(); + + // Functionality from upb::RefCounted. + bool IsFrozen() const; + void Ref(const void* owner) const; + void Unref(const void* owner) const; + void DonateRef(const void *from, const void *to) const; + void CheckRef(const void *owner) const; + + // For all lookup functions, the returned pointer is not owned by the + // caller; it may be invalidated by any non-const call or unref of the + // SymbolTable! To protect against this, take a ref if desired. + + // Freezes the symbol table: prevents further modification of it. + // After the Freeze() operation is successful, the SymbolTable must only be + // accessed via a const pointer. + // + // Unlike with upb::MessageDef/upb::EnumDef/etc, freezing a SymbolTable is not + // a necessary step in using a SymbolTable. If you have no need for it to be + // immutable, there is no need to freeze it ever. However sometimes it is + // useful, and SymbolTables that are statically compiled into the binary are + // always frozen by nature. + void Freeze(); + + // Resolves the given symbol using the rules described in descriptor.proto, + // namely: + // + // If the name starts with a '.', it is fully-qualified. Otherwise, + // C++-like scoping rules are used to find the type (i.e. first the nested + // types within this message are searched, then within the parent, on up + // to the root namespace). + // + // If not found, returns NULL. + const Def* Resolve(const char* base, const char* sym) const; + + // Finds an entry in the symbol table with this exact name. If not found, + // returns NULL. + const Def* Lookup(const char *sym) const; + const MessageDef* LookupMessage(const char *sym) const; + const EnumDef* LookupEnum(const char *sym) const; + + // TODO: introduce a C++ iterator, but make it nice and templated so that if + // you ask for an iterator of MessageDef the iterated elements are strongly + // typed as MessageDef*. + + // Adds the given mutable defs to the symtab, resolving all symbols + // (including enum default values) and finalizing the defs. Only one def per + // name may be in the list, but defs can replace existing defs in the symtab. + // All defs must have a name -- anonymous defs are not allowed. Anonymous + // defs can still be frozen by calling upb_def_freeze() directly. + // + // Any existing defs that can reach defs that are being replaced will + // themselves be replaced also, so that the resulting set of defs is fully + // consistent. + // + // This logic implemented in this method is a convenience; ultimately it + // calls some combination of upb_fielddef_setsubdef(), upb_def_dup(), and + // upb_freeze(), any of which the client could call themself. However, since + // the logic for doing so is nontrivial, we provide it here. + // + // The entire operation either succeeds or fails. If the operation fails, + // the symtab is unchanged, false is returned, and status indicates the + // error. The caller passes a ref on all defs to the symtab (even if the + // operation fails). + // + // TODO(haberman): currently failure will leave the symtab unchanged, but may + // leave the defs themselves partially resolved. Does this matter? If so we + // could do a prepass that ensures that all symbols are resolvable and bail + // if not, so we don't mutate anything until we know the operation will + // succeed. + // + // TODO(haberman): since the defs must be mutable, refining a frozen def + // requires making mutable copies of the entire tree. This is wasteful if + // only a few messages are changing. We may want to add a way of adding a + // tree of frozen defs to the symtab (perhaps an alternate constructor where + // you pass the root of the tree?) + bool Add(Def*const* defs, int n, void* ref_donor, upb_status* status); + + bool Add(const std::vector<Def*>& defs, void *owner, Status* status) { + return Add((Def*const*)&defs[0], defs.size(), owner, status); + } + + private: + UPB_DISALLOW_POD_OPS(SymbolTable, upb::SymbolTable); +, +UPB_DEFINE_STRUCT(upb_symtab, upb_refcounted, + upb_strtable symtab; +)); + +#define UPB_SYMTAB_INIT(symtab, refs, ref2s) \ + { UPB_REFCOUNT_INIT(refs, ref2s), symtab } + +UPB_BEGIN_EXTERN_C // { + +// Native C API. +// From upb_refcounted. +bool upb_symtab_isfrozen(const upb_symtab *s); +void upb_symtab_ref(const upb_symtab *s, const void *owner); +void upb_symtab_unref(const upb_symtab *s, const void *owner); +void upb_symtab_donateref( + const upb_symtab *s, const void *from, const void *to); +void upb_symtab_checkref(const upb_symtab *s, const void *owner); + +upb_symtab *upb_symtab_new(const void *owner); +void upb_symtab_freeze(upb_symtab *s); +const upb_def *upb_symtab_resolve(const upb_symtab *s, const char *base, + const char *sym); +const upb_def *upb_symtab_lookup(const upb_symtab *s, const char *sym); +const upb_msgdef *upb_symtab_lookupmsg(const upb_symtab *s, const char *sym); +const upb_enumdef *upb_symtab_lookupenum(const upb_symtab *s, const char *sym); +bool upb_symtab_add(upb_symtab *s, upb_def *const*defs, int n, void *ref_donor, + upb_status *status); + +// upb_symtab_iter i; +// for(upb_symtab_begin(&i, s, type); !upb_symtab_done(&i); +// upb_symtab_next(&i)) { +// const upb_def *def = upb_symtab_iter_def(&i); +// // ... +// } +// +// For C we don't have separate iterators for const and non-const. +// It is the caller's responsibility to cast the upb_fielddef* to +// const if the upb_msgdef* is const. +void upb_symtab_begin(upb_symtab_iter *iter, const upb_symtab *s, + upb_deftype_t type); +void upb_symtab_next(upb_symtab_iter *iter); +bool upb_symtab_done(const upb_symtab_iter *iter); +const upb_def *upb_symtab_iter_def(const upb_symtab_iter *iter); + +UPB_END_EXTERN_C // } + +#ifdef __cplusplus +// C++ inline wrappers. +namespace upb { +inline reffed_ptr<SymbolTable> SymbolTable::New() { + upb_symtab *s = upb_symtab_new(&s); + return reffed_ptr<SymbolTable>(s, &s); +} + +inline bool SymbolTable::IsFrozen() const { + return upb_symtab_isfrozen(this); +} +inline void SymbolTable::Ref(const void *owner) const { + upb_symtab_ref(this, owner); +} +inline void SymbolTable::Unref(const void *owner) const { + upb_symtab_unref(this, owner); +} +inline void SymbolTable::DonateRef(const void *from, const void *to) const { + upb_symtab_donateref(this, from, to); +} +inline void SymbolTable::CheckRef(const void *owner) const { + upb_symtab_checkref(this, owner); +} + +inline void SymbolTable::Freeze() { + return upb_symtab_freeze(this); +} +inline const Def *SymbolTable::Resolve(const char *base, + const char *sym) const { + return upb_symtab_resolve(this, base, sym); +} +inline const Def* SymbolTable::Lookup(const char *sym) const { + return upb_symtab_lookup(this, sym); +} +inline const MessageDef *SymbolTable::LookupMessage(const char *sym) const { + return upb_symtab_lookupmsg(this, sym); +} +inline bool SymbolTable::Add( + Def*const* defs, int n, void* ref_donor, upb_status* status) { + return upb_symtab_add(this, (upb_def*const*)defs, n, ref_donor, status); +} +} // namespace upb +#endif + +#endif /* UPB_SYMTAB_H_ */ + +#ifdef __cplusplus +extern "C" { +#endif + +// Enums + +typedef enum { + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_OPTIONAL = 1, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_REQUIRED = 2, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_REPEATED = 3, +} google_protobuf_FieldDescriptorProto_Label; + +typedef enum { + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_DOUBLE = 1, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FLOAT = 2, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT64 = 3, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_UINT64 = 4, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT32 = 5, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FIXED64 = 6, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_FIXED32 = 7, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BOOL = 8, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_STRING = 9, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_GROUP = 10, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_MESSAGE = 11, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_BYTES = 12, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_UINT32 = 13, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_ENUM = 14, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED32 = 15, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SFIXED64 = 16, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT32 = 17, + GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_SINT64 = 18, +} google_protobuf_FieldDescriptorProto_Type; + +typedef enum { + GOOGLE_PROTOBUF_FIELDOPTIONS_STRING = 0, + GOOGLE_PROTOBUF_FIELDOPTIONS_CORD = 1, + GOOGLE_PROTOBUF_FIELDOPTIONS_STRING_PIECE = 2, +} google_protobuf_FieldOptions_CType; + +typedef enum { + GOOGLE_PROTOBUF_FILEOPTIONS_SPEED = 1, + GOOGLE_PROTOBUF_FILEOPTIONS_CODE_SIZE = 2, + GOOGLE_PROTOBUF_FILEOPTIONS_LITE_RUNTIME = 3, +} google_protobuf_FileOptions_OptimizeMode; + +// Selectors + +// google.protobuf.DescriptorProto +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_FIELD_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_NESTED_TYPE_STARTSUBMSG 3 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_ENUM_TYPE_STARTSUBMSG 4 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_RANGE_STARTSUBMSG 5 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_STARTSUBMSG 6 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_OPTIONS_STARTSUBMSG 7 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_FIELD_STARTSEQ 8 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_FIELD_ENDSEQ 9 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_FIELD_ENDSUBMSG 10 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_NESTED_TYPE_STARTSEQ 11 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_NESTED_TYPE_ENDSEQ 12 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_NESTED_TYPE_ENDSUBMSG 13 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_ENUM_TYPE_STARTSEQ 14 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_ENUM_TYPE_ENDSEQ 15 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_ENUM_TYPE_ENDSUBMSG 16 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_RANGE_STARTSEQ 17 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_RANGE_ENDSEQ 18 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_RANGE_ENDSUBMSG 19 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_STARTSEQ 20 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_ENDSEQ 21 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSION_ENDSUBMSG 22 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_OPTIONS_ENDSUBMSG 23 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_NAME_STRING 24 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_NAME_STARTSTR 25 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_NAME_ENDSTR 26 + +// google.protobuf.DescriptorProto.ExtensionRange +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSIONRANGE_START_INT32 2 +#define SEL_GOOGLE_PROTOBUF_DESCRIPTORPROTO_EXTENSIONRANGE_END_INT32 3 + +// google.protobuf.EnumDescriptorProto +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_VALUE_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_OPTIONS_STARTSUBMSG 3 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_VALUE_STARTSEQ 4 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_VALUE_ENDSEQ 5 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_VALUE_ENDSUBMSG 6 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_OPTIONS_ENDSUBMSG 7 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_NAME_STRING 8 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_NAME_STARTSTR 9 +#define SEL_GOOGLE_PROTOBUF_ENUMDESCRIPTORPROTO_NAME_ENDSTR 10 + +// google.protobuf.EnumOptions +#define SEL_GOOGLE_PROTOBUF_ENUMOPTIONS_UNINTERPRETED_OPTION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_ENUMOPTIONS_UNINTERPRETED_OPTION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_ENUMOPTIONS_UNINTERPRETED_OPTION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_ENUMOPTIONS_UNINTERPRETED_OPTION_ENDSUBMSG 5 +#define SEL_GOOGLE_PROTOBUF_ENUMOPTIONS_ALLOW_ALIAS_BOOL 6 + +// google.protobuf.EnumValueDescriptorProto +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEDESCRIPTORPROTO_OPTIONS_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEDESCRIPTORPROTO_OPTIONS_ENDSUBMSG 3 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEDESCRIPTORPROTO_NAME_STRING 4 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEDESCRIPTORPROTO_NAME_STARTSTR 5 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEDESCRIPTORPROTO_NAME_ENDSTR 6 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEDESCRIPTORPROTO_NUMBER_INT32 7 + +// google.protobuf.EnumValueOptions +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEOPTIONS_UNINTERPRETED_OPTION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEOPTIONS_UNINTERPRETED_OPTION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEOPTIONS_UNINTERPRETED_OPTION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_ENUMVALUEOPTIONS_UNINTERPRETED_OPTION_ENDSUBMSG 5 + +// google.protobuf.FieldDescriptorProto +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_OPTIONS_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_OPTIONS_ENDSUBMSG 3 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_NAME_STRING 4 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_NAME_STARTSTR 5 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_NAME_ENDSTR 6 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_EXTENDEE_STRING 7 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_EXTENDEE_STARTSTR 8 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_EXTENDEE_ENDSTR 9 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_NUMBER_INT32 10 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_LABEL_INT32 11 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_INT32 12 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_NAME_STRING 13 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_NAME_STARTSTR 14 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_TYPE_NAME_ENDSTR 15 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_DEFAULT_VALUE_STRING 16 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_DEFAULT_VALUE_STARTSTR 17 +#define SEL_GOOGLE_PROTOBUF_FIELDDESCRIPTORPROTO_DEFAULT_VALUE_ENDSTR 18 + +// google.protobuf.FieldOptions +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_UNINTERPRETED_OPTION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_UNINTERPRETED_OPTION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_UNINTERPRETED_OPTION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_UNINTERPRETED_OPTION_ENDSUBMSG 5 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_CTYPE_INT32 6 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_PACKED_BOOL 7 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_DEPRECATED_BOOL 8 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_LAZY_BOOL 9 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_EXPERIMENTAL_MAP_KEY_STRING 10 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_EXPERIMENTAL_MAP_KEY_STARTSTR 11 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_EXPERIMENTAL_MAP_KEY_ENDSTR 12 +#define SEL_GOOGLE_PROTOBUF_FIELDOPTIONS_WEAK_BOOL 13 + +// google.protobuf.FileDescriptorProto +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_MESSAGE_TYPE_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_ENUM_TYPE_STARTSUBMSG 3 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_SERVICE_STARTSUBMSG 4 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_EXTENSION_STARTSUBMSG 5 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_OPTIONS_STARTSUBMSG 6 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_SOURCE_CODE_INFO_STARTSUBMSG 7 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_MESSAGE_TYPE_STARTSEQ 8 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_MESSAGE_TYPE_ENDSEQ 9 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_MESSAGE_TYPE_ENDSUBMSG 10 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_ENUM_TYPE_STARTSEQ 11 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_ENUM_TYPE_ENDSEQ 12 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_ENUM_TYPE_ENDSUBMSG 13 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_SERVICE_STARTSEQ 14 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_SERVICE_ENDSEQ 15 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_SERVICE_ENDSUBMSG 16 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_EXTENSION_STARTSEQ 17 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_EXTENSION_ENDSEQ 18 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_EXTENSION_ENDSUBMSG 19 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_OPTIONS_ENDSUBMSG 20 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_SOURCE_CODE_INFO_ENDSUBMSG 21 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_NAME_STRING 22 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_NAME_STARTSTR 23 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_NAME_ENDSTR 24 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_PACKAGE_STRING 25 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_PACKAGE_STARTSTR 26 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_PACKAGE_ENDSTR 27 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_DEPENDENCY_STARTSEQ 28 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_DEPENDENCY_ENDSEQ 29 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_DEPENDENCY_STRING 30 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_DEPENDENCY_STARTSTR 31 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_DEPENDENCY_ENDSTR 32 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_PUBLIC_DEPENDENCY_STARTSEQ 33 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_PUBLIC_DEPENDENCY_ENDSEQ 34 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_PUBLIC_DEPENDENCY_INT32 35 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_WEAK_DEPENDENCY_STARTSEQ 36 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_WEAK_DEPENDENCY_ENDSEQ 37 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORPROTO_WEAK_DEPENDENCY_INT32 38 + +// google.protobuf.FileDescriptorSet +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORSET_FILE_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORSET_FILE_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORSET_FILE_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_FILEDESCRIPTORSET_FILE_ENDSUBMSG 5 + +// google.protobuf.FileOptions +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_UNINTERPRETED_OPTION_ENDSUBMSG 5 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_PACKAGE_STRING 6 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_PACKAGE_STARTSTR 7 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_PACKAGE_ENDSTR 8 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_OUTER_CLASSNAME_STRING 9 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_OUTER_CLASSNAME_STARTSTR 10 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_OUTER_CLASSNAME_ENDSTR 11 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_OPTIMIZE_FOR_INT32 12 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_MULTIPLE_FILES_BOOL 13 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_GO_PACKAGE_STRING 14 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_GO_PACKAGE_STARTSTR 15 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_GO_PACKAGE_ENDSTR 16 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_CC_GENERIC_SERVICES_BOOL 17 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_GENERIC_SERVICES_BOOL 18 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_PY_GENERIC_SERVICES_BOOL 19 +#define SEL_GOOGLE_PROTOBUF_FILEOPTIONS_JAVA_GENERATE_EQUALS_AND_HASH_BOOL 20 + +// google.protobuf.MessageOptions +#define SEL_GOOGLE_PROTOBUF_MESSAGEOPTIONS_UNINTERPRETED_OPTION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_MESSAGEOPTIONS_UNINTERPRETED_OPTION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_MESSAGEOPTIONS_UNINTERPRETED_OPTION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_MESSAGEOPTIONS_UNINTERPRETED_OPTION_ENDSUBMSG 5 +#define SEL_GOOGLE_PROTOBUF_MESSAGEOPTIONS_MESSAGE_SET_WIRE_FORMAT_BOOL 6 +#define SEL_GOOGLE_PROTOBUF_MESSAGEOPTIONS_NO_STANDARD_DESCRIPTOR_ACCESSOR_BOOL 7 + +// google.protobuf.MethodDescriptorProto +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_OPTIONS_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_OPTIONS_ENDSUBMSG 3 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_NAME_STRING 4 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_NAME_STARTSTR 5 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_NAME_ENDSTR 6 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_INPUT_TYPE_STRING 7 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_INPUT_TYPE_STARTSTR 8 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_INPUT_TYPE_ENDSTR 9 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_OUTPUT_TYPE_STRING 10 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_OUTPUT_TYPE_STARTSTR 11 +#define SEL_GOOGLE_PROTOBUF_METHODDESCRIPTORPROTO_OUTPUT_TYPE_ENDSTR 12 + +// google.protobuf.MethodOptions +#define SEL_GOOGLE_PROTOBUF_METHODOPTIONS_UNINTERPRETED_OPTION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_METHODOPTIONS_UNINTERPRETED_OPTION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_METHODOPTIONS_UNINTERPRETED_OPTION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_METHODOPTIONS_UNINTERPRETED_OPTION_ENDSUBMSG 5 + +// google.protobuf.ServiceDescriptorProto +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_METHOD_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_OPTIONS_STARTSUBMSG 3 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_METHOD_STARTSEQ 4 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_METHOD_ENDSEQ 5 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_METHOD_ENDSUBMSG 6 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_OPTIONS_ENDSUBMSG 7 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_NAME_STRING 8 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_NAME_STARTSTR 9 +#define SEL_GOOGLE_PROTOBUF_SERVICEDESCRIPTORPROTO_NAME_ENDSTR 10 + +// google.protobuf.ServiceOptions +#define SEL_GOOGLE_PROTOBUF_SERVICEOPTIONS_UNINTERPRETED_OPTION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_SERVICEOPTIONS_UNINTERPRETED_OPTION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_SERVICEOPTIONS_UNINTERPRETED_OPTION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_SERVICEOPTIONS_UNINTERPRETED_OPTION_ENDSUBMSG 5 + +// google.protobuf.SourceCodeInfo +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_ENDSUBMSG 5 + +// google.protobuf.SourceCodeInfo.Location +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_PATH_STARTSEQ 2 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_PATH_ENDSEQ 3 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_PATH_INT32 4 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_SPAN_STARTSEQ 5 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_SPAN_ENDSEQ 6 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_SPAN_INT32 7 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_LEADING_COMMENTS_STRING 8 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_LEADING_COMMENTS_STARTSTR 9 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_LEADING_COMMENTS_ENDSTR 10 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_TRAILING_COMMENTS_STRING 11 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_TRAILING_COMMENTS_STARTSTR 12 +#define SEL_GOOGLE_PROTOBUF_SOURCECODEINFO_LOCATION_TRAILING_COMMENTS_ENDSTR 13 + +// google.protobuf.UninterpretedOption +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAME_STARTSUBMSG 2 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAME_STARTSEQ 3 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAME_ENDSEQ 4 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAME_ENDSUBMSG 5 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_IDENTIFIER_VALUE_STRING 6 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_IDENTIFIER_VALUE_STARTSTR 7 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_IDENTIFIER_VALUE_ENDSTR 8 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_POSITIVE_INT_VALUE_UINT64 9 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NEGATIVE_INT_VALUE_INT64 10 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_DOUBLE_VALUE_DOUBLE 11 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_STRING_VALUE_STRING 12 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_STRING_VALUE_STARTSTR 13 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_STRING_VALUE_ENDSTR 14 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_AGGREGATE_VALUE_STRING 15 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_AGGREGATE_VALUE_STARTSTR 16 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_AGGREGATE_VALUE_ENDSTR 17 + +// google.protobuf.UninterpretedOption.NamePart +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAMEPART_NAME_PART_STRING 2 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAMEPART_NAME_PART_STARTSTR 3 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAMEPART_NAME_PART_ENDSTR 4 +#define SEL_GOOGLE_PROTOBUF_UNINTERPRETEDOPTION_NAMEPART_IS_EXTENSION_BOOL 5 + +const upb_symtab *upbdefs_google_protobuf_descriptor(const void *owner); + +// MessageDefs +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_DescriptorProto(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.DescriptorProto"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_DescriptorProto_ExtensionRange(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.DescriptorProto.ExtensionRange"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_EnumDescriptorProto(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.EnumDescriptorProto"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_EnumOptions(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.EnumOptions"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_EnumValueDescriptorProto(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.EnumValueDescriptorProto"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_EnumValueOptions(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.EnumValueOptions"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_FieldDescriptorProto(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.FieldDescriptorProto"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_FieldOptions(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.FieldOptions"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_FileDescriptorProto(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.FileDescriptorProto"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_FileDescriptorSet(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.FileDescriptorSet"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_FileOptions(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.FileOptions"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_MessageOptions(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.MessageOptions"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_MethodDescriptorProto(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.MethodDescriptorProto"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_MethodOptions(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.MethodOptions"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_ServiceDescriptorProto(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.ServiceDescriptorProto"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_ServiceOptions(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.ServiceOptions"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_SourceCodeInfo(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.SourceCodeInfo"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_SourceCodeInfo_Location(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.SourceCodeInfo.Location"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_UninterpretedOption(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.UninterpretedOption"); + assert(m); + return m; +} +UPB_INLINE const upb_msgdef *upbdefs_google_protobuf_UninterpretedOption_NamePart(const upb_symtab *s) { + const upb_msgdef *m = upb_symtab_lookupmsg(s, "google.protobuf.UninterpretedOption.NamePart"); + assert(m); + return m; +} + + +// EnumDefs +UPB_INLINE const upb_enumdef *upbdefs_google_protobuf_FieldDescriptorProto_Label(const upb_symtab *s) { + const upb_enumdef *e = upb_symtab_lookupenum(s, "google.protobuf.FieldDescriptorProto.Label"); + assert(e); + return e; +} +UPB_INLINE const upb_enumdef *upbdefs_google_protobuf_FieldDescriptorProto_Type(const upb_symtab *s) { + const upb_enumdef *e = upb_symtab_lookupenum(s, "google.protobuf.FieldDescriptorProto.Type"); + assert(e); + return e; +} +UPB_INLINE const upb_enumdef *upbdefs_google_protobuf_FieldOptions_CType(const upb_symtab *s) { + const upb_enumdef *e = upb_symtab_lookupenum(s, "google.protobuf.FieldOptions.CType"); + assert(e); + return e; +} +UPB_INLINE const upb_enumdef *upbdefs_google_protobuf_FileOptions_OptimizeMode(const upb_symtab *s) { + const upb_enumdef *e = upb_symtab_lookupenum(s, "google.protobuf.FileOptions.OptimizeMode"); + assert(e); + return e; +} + +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_ExtensionRange_end(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto_ExtensionRange(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_ExtensionRange_start(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto_ExtensionRange(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_enum_type(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto(s), 4); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_extension(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto(s), 6); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_extension_range(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto(s), 5); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_field(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_nested_type(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_DescriptorProto_options(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_DescriptorProto(s), 7); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumDescriptorProto_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumDescriptorProto(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumDescriptorProto_options(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumDescriptorProto(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumDescriptorProto_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumDescriptorProto(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumOptions_allow_alias(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumOptions(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumOptions_uninterpreted_option(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumOptions(s), 999); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumValueDescriptorProto_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumValueDescriptorProto(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumValueDescriptorProto_number(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumValueDescriptorProto(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumValueDescriptorProto_options(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumValueDescriptorProto(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_EnumValueOptions_uninterpreted_option(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_EnumValueOptions(s), 999); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_default_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 7); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_extendee(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_label(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 4); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_number(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_options(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 8); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_type(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 5); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldDescriptorProto_type_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldDescriptorProto(s), 6); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldOptions_ctype(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldOptions(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldOptions_deprecated(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldOptions(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldOptions_experimental_map_key(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldOptions(s), 9); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldOptions_lazy(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldOptions(s), 5); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldOptions_packed(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldOptions(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldOptions_uninterpreted_option(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldOptions(s), 999); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FieldOptions_weak(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FieldOptions(s), 10); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_dependency(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_enum_type(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 5); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_extension(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 7); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_message_type(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 4); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_options(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 8); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_package(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_public_dependency(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 10); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_service(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 6); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_source_code_info(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 9); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorProto_weak_dependency(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorProto(s), 11); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileDescriptorSet_file(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileDescriptorSet(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_cc_generic_services(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 16); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_go_package(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 11); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_java_generate_equals_and_hash(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 20); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_java_generic_services(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 17); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_java_multiple_files(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 10); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_java_outer_classname(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 8); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_java_package(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_optimize_for(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 9); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_py_generic_services(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 18); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_FileOptions_uninterpreted_option(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_FileOptions(s), 999); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MessageOptions_message_set_wire_format(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MessageOptions(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MessageOptions_no_standard_descriptor_accessor(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MessageOptions(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MessageOptions_uninterpreted_option(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MessageOptions(s), 999); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MethodDescriptorProto_input_type(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MethodDescriptorProto(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MethodDescriptorProto_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MethodDescriptorProto(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MethodDescriptorProto_options(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MethodDescriptorProto(s), 4); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MethodDescriptorProto_output_type(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MethodDescriptorProto(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_MethodOptions_uninterpreted_option(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_MethodOptions(s), 999); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_ServiceDescriptorProto_method(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_ServiceDescriptorProto(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_ServiceDescriptorProto_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_ServiceDescriptorProto(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_ServiceDescriptorProto_options(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_ServiceDescriptorProto(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_ServiceOptions_uninterpreted_option(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_ServiceOptions(s), 999); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_SourceCodeInfo_Location_leading_comments(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_SourceCodeInfo_Location(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_SourceCodeInfo_Location_path(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_SourceCodeInfo_Location(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_SourceCodeInfo_Location_span(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_SourceCodeInfo_Location(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_SourceCodeInfo_Location_trailing_comments(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_SourceCodeInfo_Location(s), 4); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_SourceCodeInfo_location(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_SourceCodeInfo(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_NamePart_is_extension(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption_NamePart(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_NamePart_name_part(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption_NamePart(s), 1); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_aggregate_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption(s), 8); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_double_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption(s), 6); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_identifier_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption(s), 3); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_name(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption(s), 2); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_negative_int_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption(s), 5); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_positive_int_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption(s), 4); } +UPB_INLINE const upb_fielddef *upbdefs_google_protobuf_UninterpretedOption_string_value(const upb_symtab *s) { return upb_msgdef_itof(upbdefs_google_protobuf_UninterpretedOption(s), 7); } + +#ifdef __cplusplus +}; // extern "C" +#endif + +#ifdef __cplusplus + +namespace upbdefs { +namespace google { +namespace protobuf { +namespace descriptor { +inline upb::reffed_ptr<const upb::SymbolTable> SymbolTable() { + const upb::SymbolTable* s = upbdefs_google_protobuf_descriptor(&s); + return upb::reffed_ptr<const upb::SymbolTable>(s, &s); +} +} // namespace descriptor +} // namespace protobuf +} // namespace google + +#define RETURN_REFFED(type, func) \ + const type* obj = func(upbdefs::google::protobuf::descriptor::SymbolTable().get()); \ + return upb::reffed_ptr<const type>(obj); + +namespace google { +namespace protobuf { +namespace DescriptorProto { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_DescriptorProto) } +inline upb::reffed_ptr<const upb::FieldDef> enum_type() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_enum_type) } +inline upb::reffed_ptr<const upb::FieldDef> extension() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_extension) } +inline upb::reffed_ptr<const upb::FieldDef> extension_range() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_extension_range) } +inline upb::reffed_ptr<const upb::FieldDef> field() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_field) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_name) } +inline upb::reffed_ptr<const upb::FieldDef> nested_type() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_nested_type) } +inline upb::reffed_ptr<const upb::FieldDef> options() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_options) } +} // namespace DescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace DescriptorProto { +namespace ExtensionRange { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_DescriptorProto_ExtensionRange) } +inline upb::reffed_ptr<const upb::FieldDef> end() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_ExtensionRange_end) } +inline upb::reffed_ptr<const upb::FieldDef> start() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_DescriptorProto_ExtensionRange_start) } +} // namespace ExtensionRange +} // namespace DescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace EnumDescriptorProto { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_EnumDescriptorProto) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumDescriptorProto_name) } +inline upb::reffed_ptr<const upb::FieldDef> options() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumDescriptorProto_options) } +inline upb::reffed_ptr<const upb::FieldDef> value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumDescriptorProto_value) } +} // namespace EnumDescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace EnumOptions { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_EnumOptions) } +inline upb::reffed_ptr<const upb::FieldDef> allow_alias() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumOptions_allow_alias) } +inline upb::reffed_ptr<const upb::FieldDef> uninterpreted_option() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumOptions_uninterpreted_option) } +} // namespace EnumOptions +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace EnumValueDescriptorProto { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_EnumValueDescriptorProto) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumValueDescriptorProto_name) } +inline upb::reffed_ptr<const upb::FieldDef> number() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumValueDescriptorProto_number) } +inline upb::reffed_ptr<const upb::FieldDef> options() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumValueDescriptorProto_options) } +} // namespace EnumValueDescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace EnumValueOptions { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_EnumValueOptions) } +inline upb::reffed_ptr<const upb::FieldDef> uninterpreted_option() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_EnumValueOptions_uninterpreted_option) } +} // namespace EnumValueOptions +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace FieldDescriptorProto { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_FieldDescriptorProto) } +inline upb::reffed_ptr<const upb::FieldDef> default_value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_default_value) } +inline upb::reffed_ptr<const upb::FieldDef> extendee() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_extendee) } +inline upb::reffed_ptr<const upb::FieldDef> label() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_label) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_name) } +inline upb::reffed_ptr<const upb::FieldDef> number() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_number) } +inline upb::reffed_ptr<const upb::FieldDef> options() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_options) } +inline upb::reffed_ptr<const upb::FieldDef> type() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_type) } +inline upb::reffed_ptr<const upb::FieldDef> type_name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldDescriptorProto_type_name) } +inline upb::reffed_ptr<const upb::EnumDef> Label() { RETURN_REFFED(upb::EnumDef, upbdefs_google_protobuf_FieldDescriptorProto_Label) } +inline upb::reffed_ptr<const upb::EnumDef> Type() { RETURN_REFFED(upb::EnumDef, upbdefs_google_protobuf_FieldDescriptorProto_Type) } +} // namespace FieldDescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace FieldOptions { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_FieldOptions) } +inline upb::reffed_ptr<const upb::FieldDef> ctype() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldOptions_ctype) } +inline upb::reffed_ptr<const upb::FieldDef> deprecated() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldOptions_deprecated) } +inline upb::reffed_ptr<const upb::FieldDef> experimental_map_key() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldOptions_experimental_map_key) } +inline upb::reffed_ptr<const upb::FieldDef> lazy() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldOptions_lazy) } +inline upb::reffed_ptr<const upb::FieldDef> packed() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldOptions_packed) } +inline upb::reffed_ptr<const upb::FieldDef> uninterpreted_option() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldOptions_uninterpreted_option) } +inline upb::reffed_ptr<const upb::FieldDef> weak() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FieldOptions_weak) } +inline upb::reffed_ptr<const upb::EnumDef> CType() { RETURN_REFFED(upb::EnumDef, upbdefs_google_protobuf_FieldOptions_CType) } +} // namespace FieldOptions +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace FileDescriptorProto { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_FileDescriptorProto) } +inline upb::reffed_ptr<const upb::FieldDef> dependency() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_dependency) } +inline upb::reffed_ptr<const upb::FieldDef> enum_type() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_enum_type) } +inline upb::reffed_ptr<const upb::FieldDef> extension() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_extension) } +inline upb::reffed_ptr<const upb::FieldDef> message_type() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_message_type) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_name) } +inline upb::reffed_ptr<const upb::FieldDef> options() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_options) } +inline upb::reffed_ptr<const upb::FieldDef> package() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_package) } +inline upb::reffed_ptr<const upb::FieldDef> public_dependency() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_public_dependency) } +inline upb::reffed_ptr<const upb::FieldDef> service() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_service) } +inline upb::reffed_ptr<const upb::FieldDef> source_code_info() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_source_code_info) } +inline upb::reffed_ptr<const upb::FieldDef> weak_dependency() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorProto_weak_dependency) } +} // namespace FileDescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace FileDescriptorSet { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_FileDescriptorSet) } +inline upb::reffed_ptr<const upb::FieldDef> file() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileDescriptorSet_file) } +} // namespace FileDescriptorSet +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace FileOptions { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_FileOptions) } +inline upb::reffed_ptr<const upb::FieldDef> cc_generic_services() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_cc_generic_services) } +inline upb::reffed_ptr<const upb::FieldDef> go_package() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_go_package) } +inline upb::reffed_ptr<const upb::FieldDef> java_generate_equals_and_hash() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_java_generate_equals_and_hash) } +inline upb::reffed_ptr<const upb::FieldDef> java_generic_services() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_java_generic_services) } +inline upb::reffed_ptr<const upb::FieldDef> java_multiple_files() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_java_multiple_files) } +inline upb::reffed_ptr<const upb::FieldDef> java_outer_classname() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_java_outer_classname) } +inline upb::reffed_ptr<const upb::FieldDef> java_package() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_java_package) } +inline upb::reffed_ptr<const upb::FieldDef> optimize_for() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_optimize_for) } +inline upb::reffed_ptr<const upb::FieldDef> py_generic_services() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_py_generic_services) } +inline upb::reffed_ptr<const upb::FieldDef> uninterpreted_option() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_FileOptions_uninterpreted_option) } +inline upb::reffed_ptr<const upb::EnumDef> OptimizeMode() { RETURN_REFFED(upb::EnumDef, upbdefs_google_protobuf_FileOptions_OptimizeMode) } +} // namespace FileOptions +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace MessageOptions { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_MessageOptions) } +inline upb::reffed_ptr<const upb::FieldDef> message_set_wire_format() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MessageOptions_message_set_wire_format) } +inline upb::reffed_ptr<const upb::FieldDef> no_standard_descriptor_accessor() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MessageOptions_no_standard_descriptor_accessor) } +inline upb::reffed_ptr<const upb::FieldDef> uninterpreted_option() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MessageOptions_uninterpreted_option) } +} // namespace MessageOptions +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace MethodDescriptorProto { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_MethodDescriptorProto) } +inline upb::reffed_ptr<const upb::FieldDef> input_type() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MethodDescriptorProto_input_type) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MethodDescriptorProto_name) } +inline upb::reffed_ptr<const upb::FieldDef> options() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MethodDescriptorProto_options) } +inline upb::reffed_ptr<const upb::FieldDef> output_type() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MethodDescriptorProto_output_type) } +} // namespace MethodDescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace MethodOptions { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_MethodOptions) } +inline upb::reffed_ptr<const upb::FieldDef> uninterpreted_option() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_MethodOptions_uninterpreted_option) } +} // namespace MethodOptions +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace ServiceDescriptorProto { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_ServiceDescriptorProto) } +inline upb::reffed_ptr<const upb::FieldDef> method() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_ServiceDescriptorProto_method) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_ServiceDescriptorProto_name) } +inline upb::reffed_ptr<const upb::FieldDef> options() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_ServiceDescriptorProto_options) } +} // namespace ServiceDescriptorProto +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace ServiceOptions { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_ServiceOptions) } +inline upb::reffed_ptr<const upb::FieldDef> uninterpreted_option() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_ServiceOptions_uninterpreted_option) } +} // namespace ServiceOptions +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace SourceCodeInfo { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_SourceCodeInfo) } +inline upb::reffed_ptr<const upb::FieldDef> location() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_SourceCodeInfo_location) } +} // namespace SourceCodeInfo +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace SourceCodeInfo { +namespace Location { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_SourceCodeInfo_Location) } +inline upb::reffed_ptr<const upb::FieldDef> leading_comments() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_SourceCodeInfo_Location_leading_comments) } +inline upb::reffed_ptr<const upb::FieldDef> path() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_SourceCodeInfo_Location_path) } +inline upb::reffed_ptr<const upb::FieldDef> span() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_SourceCodeInfo_Location_span) } +inline upb::reffed_ptr<const upb::FieldDef> trailing_comments() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_SourceCodeInfo_Location_trailing_comments) } +} // namespace Location +} // namespace SourceCodeInfo +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace UninterpretedOption { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_UninterpretedOption) } +inline upb::reffed_ptr<const upb::FieldDef> aggregate_value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_aggregate_value) } +inline upb::reffed_ptr<const upb::FieldDef> double_value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_double_value) } +inline upb::reffed_ptr<const upb::FieldDef> identifier_value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_identifier_value) } +inline upb::reffed_ptr<const upb::FieldDef> name() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_name) } +inline upb::reffed_ptr<const upb::FieldDef> negative_int_value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_negative_int_value) } +inline upb::reffed_ptr<const upb::FieldDef> positive_int_value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_positive_int_value) } +inline upb::reffed_ptr<const upb::FieldDef> string_value() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_string_value) } +} // namespace UninterpretedOption +} // namespace protobuf +} // namespace google + +namespace google { +namespace protobuf { +namespace UninterpretedOption { +namespace NamePart { +inline upb::reffed_ptr<const upb::MessageDef> MessageDef() { RETURN_REFFED(upb::MessageDef, upbdefs_google_protobuf_UninterpretedOption_NamePart) } +inline upb::reffed_ptr<const upb::FieldDef> is_extension() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_NamePart_is_extension) } +inline upb::reffed_ptr<const upb::FieldDef> name_part() { RETURN_REFFED(upb::FieldDef, upbdefs_google_protobuf_UninterpretedOption_NamePart_name_part) } +} // namespace NamePart +} // namespace UninterpretedOption +} // namespace protobuf +} // namespace google + +} // namespace upbdefs + + +#undef RETURN_REFFED +#endif // __cplusplus + +#endif // GOOGLE_PROTOBUF_DESCRIPTOR_UPB_H_ +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2010-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * A upb_handlers is like a virtual table for a upb_msgdef. Each field of the + * message can have associated functions that will be called when we are + * parsing or visiting a stream of data. This is similar to how handlers work + * in SAX (the Simple API for XML). + * + * The handlers have no idea where the data is coming from, so a single set of + * handlers could be used with two completely different data sources (for + * example, a parser and a visitor over in-memory objects). This decoupling is + * the most important feature of upb, because it allows parsers and serializers + * to be highly reusable. + * + * This is a mixed C/C++ interface that offers a full API to both languages. + * See the top-level README for more information. + */ + +#ifndef UPB_HANDLERS_H +#define UPB_HANDLERS_H + + +#ifdef __cplusplus +namespace upb { +class BufferHandle; +class BytesHandler; +class HandlerAttributes; +class Handlers; +template <class T> class Handler; +template <class T> struct CanonicalType; +} // namespace upb +#endif + +UPB_DECLARE_TYPE(upb::BufferHandle, upb_bufhandle); +UPB_DECLARE_TYPE(upb::BytesHandler, upb_byteshandler); +UPB_DECLARE_TYPE(upb::HandlerAttributes, upb_handlerattr); +UPB_DECLARE_TYPE(upb::Handlers, upb_handlers); + +// The maximum depth that the handler graph can have. This is a resource limit +// for the C stack since we sometimes need to recursively traverse the graph. +// Cycles are ok; the traversal will stop when it detects a cycle, but we must +// hit the cycle before the maximum depth is reached. +// +// If having a single static limit is too inflexible, we can add another variant +// of Handlers::Freeze that allows specifying this as a parameter. +#define UPB_MAX_HANDLER_DEPTH 64 + +// All the different types of handlers that can be registered. +// Only needed for the advanced functions in upb::Handlers. +typedef enum { + UPB_HANDLER_INT32, + UPB_HANDLER_INT64, + UPB_HANDLER_UINT32, + UPB_HANDLER_UINT64, + UPB_HANDLER_FLOAT, + UPB_HANDLER_DOUBLE, + UPB_HANDLER_BOOL, + UPB_HANDLER_STARTSTR, + UPB_HANDLER_STRING, + UPB_HANDLER_ENDSTR, + UPB_HANDLER_STARTSUBMSG, + UPB_HANDLER_ENDSUBMSG, + UPB_HANDLER_STARTSEQ, + UPB_HANDLER_ENDSEQ, +} upb_handlertype_t; + +#define UPB_HANDLER_MAX (UPB_HANDLER_ENDSEQ+1) + +#define UPB_BREAK NULL + +// A convenient definition for when no closure is needed. +extern char _upb_noclosure; +#define UPB_NO_CLOSURE &_upb_noclosure + +// A selector refers to a specific field handler in the Handlers object +// (for example: the STARTSUBMSG handler for field "field15"). +typedef int32_t upb_selector_t; + +UPB_BEGIN_EXTERN_C + +// Forward-declares for C inline accessors. We need to declare these here +// so we can "friend" them in the class declarations in C++. +UPB_INLINE upb_func *upb_handlers_gethandler(const upb_handlers *h, + upb_selector_t s); +UPB_INLINE const void *upb_handlerattr_handlerdata(const upb_handlerattr *attr); +UPB_INLINE const void *upb_handlers_gethandlerdata(const upb_handlers *h, + upb_selector_t s); + +UPB_INLINE void upb_bufhandle_init(upb_bufhandle *h); +UPB_INLINE void upb_bufhandle_setobj(upb_bufhandle *h, const void *obj, + const void *type); +UPB_INLINE void upb_bufhandle_setbuf(upb_bufhandle *h, const char *buf, + size_t ofs); +UPB_INLINE const void *upb_bufhandle_obj(const upb_bufhandle *h); +UPB_INLINE const void *upb_bufhandle_objtype(const upb_bufhandle *h); +UPB_INLINE const char *upb_bufhandle_buf(const upb_bufhandle *h); + +UPB_END_EXTERN_C + + +// Static selectors for upb::Handlers. +#define UPB_STARTMSG_SELECTOR 0 +#define UPB_ENDMSG_SELECTOR 1 +#define UPB_STATIC_SELECTOR_COUNT 2 + +// Static selectors for upb::BytesHandler. +#define UPB_STARTSTR_SELECTOR 0 +#define UPB_STRING_SELECTOR 1 +#define UPB_ENDSTR_SELECTOR 2 + +typedef void upb_handlerfree(void *d); + +// A set of attributes that accompanies a handler's function pointer. +UPB_DEFINE_CLASS0(upb::HandlerAttributes, + public: + HandlerAttributes(); + ~HandlerAttributes(); + + // Sets the handler data that will be passed as the second parameter of the + // handler. To free this pointer when the handlers are freed, call + // Handlers::AddCleanup(). + bool SetHandlerData(const void *handler_data); + const void* handler_data() const; + + // Use this to specify the type of the closure. This will be checked against + // all other closure types for handler that use the same closure. + // Registration will fail if this does not match all other non-NULL closure + // types. + bool SetClosureType(const void *closure_type); + const void* closure_type() const; + + // Use this to specify the type of the returned closure. Only used for + // Start*{String,SubMessage,Sequence} handlers. This must match the closure + // type of any handlers that use it (for example, the StringBuf handler must + // match the closure returned from StartString). + bool SetReturnClosureType(const void *return_closure_type); + const void* return_closure_type() const; + + // Set to indicate that the handler always returns "ok" (either "true" or a + // non-NULL closure). This is a hint that can allow code generators to + // generate more efficient code. + bool SetAlwaysOk(bool always_ok); + bool always_ok() const; + + private: + friend UPB_INLINE const void * ::upb_handlerattr_handlerdata( + const upb_handlerattr *attr); +, +UPB_DEFINE_STRUCT0(upb_handlerattr, + const void *handler_data_; + const void *closure_type_; + const void *return_closure_type_; + bool alwaysok_; +)); + +#define UPB_HANDLERATTR_INITIALIZER {NULL, NULL, NULL, false} + +typedef struct { + upb_func *func; + // It is wasteful to include the entire attributes here: + // + // * Some of the information is redundant (like storing the closure type + // separately for each handler that must match). + // * Some of the info is only needed prior to freeze() (like closure types). + // * alignment padding wastes a lot of space for alwaysok_. + // + // If/when the size and locality of handlers is an issue, we can optimize this + // not to store the entire attr like this. We do not expose the table's + // layout to allow this optimization in the future. + upb_handlerattr attr; +} upb_handlers_tabent; + +// Extra information about a buffer that is passed to a StringBuf handler. +// TODO(haberman): allow the handle to be pinned so that it will outlive +// the handler invocation. +UPB_DEFINE_CLASS0(upb::BufferHandle, + public: + BufferHandle(); + ~BufferHandle(); + + // The beginning of the buffer. This may be different than the pointer + // passed to a StringBuf handler because the handler may receive data + // that is from the middle or end of a larger buffer. + const char* buffer() const; + + // The offset within the attached object where this buffer begins. Only + // meaningful if there is an attached object. + size_t object_offset() const; + + // Note that object_offset is the offset of "buf" within the attached object. + void SetBuffer(const char* buf, size_t object_offset); + + // The BufferHandle can have an "attached object", which can be used to + // tunnel through a pointer to the buffer's underlying representation. + template <class T> + void SetAttachedObject(const T* obj); + + // Returns NULL if the attached object is not of this type. + template <class T> + const T* GetAttachedObject() const; + + private: + friend UPB_INLINE void ::upb_bufhandle_init(upb_bufhandle *h); + friend UPB_INLINE void ::upb_bufhandle_setobj(upb_bufhandle *h, + const void *obj, + const void *type); + friend UPB_INLINE void ::upb_bufhandle_setbuf(upb_bufhandle *h, + const char *buf, size_t ofs); + friend UPB_INLINE const void* ::upb_bufhandle_obj(const upb_bufhandle *h); + friend UPB_INLINE const void* ::upb_bufhandle_objtype( + const upb_bufhandle *h); + friend UPB_INLINE const char* ::upb_bufhandle_buf(const upb_bufhandle *h); +, +UPB_DEFINE_STRUCT0(upb_bufhandle, + const char *buf_; + const void *obj_; + const void *objtype_; + size_t objofs_; +)); + +// A upb::Handlers object represents the set of handlers associated with a +// message in the graph of messages. You can think of it as a big virtual +// table with functions corresponding to all the events that can fire while +// parsing or visiting a message of a specific type. +// +// Any handlers that are not set behave as if they had successfully consumed +// the value. Any unset Start* handlers will propagate their closure to the +// inner frame. +// +// The easiest way to create the *Handler objects needed by the Set* methods is +// with the UpbBind() and UpbMakeHandler() macros; see below. +UPB_DEFINE_CLASS1(upb::Handlers, upb::RefCounted, + public: + typedef upb_selector_t Selector; + typedef upb_handlertype_t Type; + + typedef Handler<void *(*)(void *, const void *)> StartFieldHandler; + typedef Handler<bool (*)(void *, const void *)> EndFieldHandler; + typedef Handler<bool (*)(void *, const void *)> StartMessageHandler; + typedef Handler<bool (*)(void *, const void *, Status*)> EndMessageHandler; + typedef Handler<void *(*)(void *, const void *, size_t)> StartStringHandler; + typedef Handler<size_t (*)(void *, const void *, const char *, size_t, + const BufferHandle *)> StringHandler; + + template <class T> struct ValueHandler { + typedef Handler<bool(*)(void *, const void *, T)> H; + }; + + typedef ValueHandler<int32_t>::H Int32Handler; + typedef ValueHandler<int64_t>::H Int64Handler; + typedef ValueHandler<uint32_t>::H UInt32Handler; + typedef ValueHandler<uint64_t>::H UInt64Handler; + typedef ValueHandler<float>::H FloatHandler; + typedef ValueHandler<double>::H DoubleHandler; + typedef ValueHandler<bool>::H BoolHandler; + + // Any function pointer can be converted to this and converted back to its + // correct type. + typedef void GenericFunction(); + + typedef void HandlersCallback(const void *closure, upb_handlers *h); + + // Returns a new handlers object for the given frozen msgdef. + // Returns NULL if memory allocation failed. + static reffed_ptr<Handlers> New(const MessageDef *m); + + // Convenience function for registering a graph of handlers that mirrors the + // graph of msgdefs for some message. For "m" and all its children a new set + // of handlers will be created and the given callback will be invoked, + // allowing the client to register handlers for this message. Note that any + // subhandlers set by the callback will be overwritten. + static reffed_ptr<const Handlers> NewFrozen(const MessageDef *m, + HandlersCallback *callback, + const void *closure); + + // Functionality from upb::RefCounted. + bool IsFrozen() const; + void Ref(const void* owner) const; + void Unref(const void* owner) const; + void DonateRef(const void *from, const void *to) const; + void CheckRef(const void *owner) const; + + // All handler registration functions return bool to indicate success or + // failure; details about failures are stored in this status object. If a + // failure does occur, it must be cleared before the Handlers are frozen, + // otherwise the freeze() operation will fail. The functions may *only* be + // used while the Handlers are mutable. + const Status* status(); + void ClearError(); + + // Call to freeze these Handlers. Requires that any SubHandlers are already + // frozen. For cycles, you must use the static version below and freeze the + // whole graph at once. + bool Freeze(Status* s); + + // Freezes the given set of handlers. You may not freeze a handler without + // also freezing any handlers they point to. + static bool Freeze(Handlers*const* handlers, int n, Status* s); + static bool Freeze(const std::vector<Handlers*>& handlers, Status* s); + + // Returns the msgdef associated with this handlers object. + const MessageDef* message_def() const; + + // Adds the given pointer and function to the list of cleanup functions that + // will be run when these handlers are freed. If this pointer has previously + // been registered, the function returns false and does nothing. + bool AddCleanup(void *ptr, upb_handlerfree *cleanup); + + // Sets the startmsg handler for the message, which is defined as follows: + // + // bool startmsg(MyType* closure) { + // // Called when the message begins. Returns true if processing should + // // continue. + // return true; + // } + bool SetStartMessageHandler(const StartMessageHandler& handler); + + // Sets the endmsg handler for the message, which is defined as follows: + // + // bool endmsg(MyType* closure, upb_status *status) { + // // Called when processing of this message ends, whether in success or + // // failure. "status" indicates the final status of processing, and + // // can also be modified in-place to update the final status. + // } + bool SetEndMessageHandler(const EndMessageHandler& handler); + + // Sets the value handler for the given field, which is defined as follows + // (this is for an int32 field; other field types will pass their native + // C/C++ type for "val"): + // + // bool OnValue(MyClosure* c, const MyHandlerData* d, int32_t val) { + // // Called when the field's value is encountered. "d" contains + // // whatever data was bound to this field when it was registered. + // // Returns true if processing should continue. + // return true; + // } + // + // handers->SetInt32Handler(f, UpbBind(OnValue, new MyHandlerData(...))); + // + // The value type must exactly match f->type(). + // For example, a handler that takes an int32_t parameter may only be used for + // fields of type UPB_TYPE_INT32 and UPB_TYPE_ENUM. + // + // Returns false if the handler failed to register; in this case the cleanup + // handler (if any) will be called immediately. + bool SetInt32Handler (const FieldDef* f, const Int32Handler& h); + bool SetInt64Handler (const FieldDef* f, const Int64Handler& h); + bool SetUInt32Handler(const FieldDef* f, const UInt32Handler& h); + bool SetUInt64Handler(const FieldDef* f, const UInt64Handler& h); + bool SetFloatHandler (const FieldDef* f, const FloatHandler& h); + bool SetDoubleHandler(const FieldDef* f, const DoubleHandler& h); + bool SetBoolHandler (const FieldDef* f, const BoolHandler& h); + + // Like the previous, but templated on the type on the value (ie. int32). + // This is mostly useful to call from other templates. To call this you must + // specify the template parameter explicitly, ie: + // h->SetValueHandler<T>(f, UpbBind(MyHandler<T>, MyData)); + template <class T> + bool SetValueHandler( + const FieldDef *f, + const typename ValueHandler<typename CanonicalType<T>::Type>::H& handler); + + // Sets handlers for a string field, which are defined as follows: + // + // MySubClosure* startstr(MyClosure* c, const MyHandlerData* d, + // size_t size_hint) { + // // Called when a string value begins. The return value indicates the + // // closure for the string. "size_hint" indicates the size of the + // // string if it is known, however if the string is length-delimited + // // and the end-of-string is not available size_hint will be zero. + // // This case is indistinguishable from the case where the size is + // // known to be zero. + // // + // // TODO(haberman): is it important to distinguish these cases? + // // If we had ssize_t as a type we could make -1 "unknown", but + // // ssize_t is POSIX (not ANSI) and therefore less portable. + // // In practice I suspect it won't be important to distinguish. + // return closure; + // } + // + // size_t str(MyClosure* closure, const MyHandlerData* d, + // const char *str, size_t len) { + // // Called for each buffer of string data; the multiple physical buffers + // // are all part of the same logical string. The return value indicates + // // how many bytes were consumed. If this number is less than "len", + // // this will also indicate that processing should be halted for now, + // // like returning false or UPB_BREAK from any other callback. If + // // number is greater than "len", the excess bytes will be skipped over + // // and not passed to the callback. + // return len; + // } + // + // bool endstr(MyClosure* c, const MyHandlerData* d) { + // // Called when a string value ends. Return value indicates whether + // // processing should continue. + // return true; + // } + bool SetStartStringHandler(const FieldDef* f, const StartStringHandler& h); + bool SetStringHandler(const FieldDef* f, const StringHandler& h); + bool SetEndStringHandler(const FieldDef* f, const EndFieldHandler& h); + + // Sets the startseq handler, which is defined as follows: + // + // MySubClosure *startseq(MyClosure* c, const MyHandlerData* d) { + // // Called when a sequence (repeated field) begins. The returned + // // pointer indicates the closure for the sequence (or UPB_BREAK + // // to interrupt processing). + // return closure; + // } + // + // h->SetStartSequenceHandler(f, UpbBind(startseq, new MyHandlerData(...))); + // + // Returns "false" if "f" does not belong to this message or is not a + // repeated field. + bool SetStartSequenceHandler(const FieldDef* f, const StartFieldHandler& h); + + // Sets the startsubmsg handler for the given field, which is defined as + // follows: + // + // MySubClosure* startsubmsg(MyClosure* c, const MyHandlerData* d) { + // // Called when a submessage begins. The returned pointer indicates the + // // closure for the sequence (or UPB_BREAK to interrupt processing). + // return closure; + // } + // + // h->SetStartSubMessageHandler(f, UpbBind(startsubmsg, + // new MyHandlerData(...))); + // + // Returns "false" if "f" does not belong to this message or is not a + // submessage/group field. + bool SetStartSubMessageHandler(const FieldDef* f, const StartFieldHandler& h); + + // Sets the endsubmsg handler for the given field, which is defined as + // follows: + // + // bool endsubmsg(MyClosure* c, const MyHandlerData* d) { + // // Called when a submessage ends. Returns true to continue processing. + // return true; + // } + // + // Returns "false" if "f" does not belong to this message or is not a + // submessage/group field. + bool SetEndSubMessageHandler(const FieldDef *f, const EndFieldHandler &h); + + // Starts the endsubseq handler for the given field, which is defined as + // follows: + // + // bool endseq(MyClosure* c, const MyHandlerData* d) { + // // Called when a sequence ends. Returns true continue processing. + // return true; + // } + // + // Returns "false" if "f" does not belong to this message or is not a + // repeated field. + bool SetEndSequenceHandler(const FieldDef* f, const EndFieldHandler& h); + + // Sets or gets the object that specifies handlers for the given field, which + // must be a submessage or group. Returns NULL if no handlers are set. + bool SetSubHandlers(const FieldDef* f, const Handlers* sub); + const Handlers* GetSubHandlers(const FieldDef* f) const; + + // Equivalent to GetSubHandlers, but takes the STARTSUBMSG selector for the + // field. + const Handlers* GetSubHandlers(Selector startsubmsg) const; + + // A selector refers to a specific field handler in the Handlers object + // (for example: the STARTSUBMSG handler for field "field15"). + // On success, returns true and stores the selector in "s". + // If the FieldDef or Type are invalid, returns false. + // The returned selector is ONLY valid for Handlers whose MessageDef + // contains this FieldDef. + static bool GetSelector(const FieldDef* f, Type type, Selector* s); + + // Given a START selector of any kind, returns the corresponding END selector. + static Selector GetEndSelector(Selector start_selector); + + // Returns the function pointer for this handler. It is the client's + // responsibility to cast to the correct function type before calling it. + GenericFunction* GetHandler(Selector selector); + + // Sets the given attributes to the attributes for this selector. + bool GetAttributes(Selector selector, HandlerAttributes* attr); + + // Returns the handler data that was registered with this handler. + const void* GetHandlerData(Selector selector); + + // Could add any of the following functions as-needed, with some minor + // implementation changes: + // + // const FieldDef* GetFieldDef(Selector selector); + // static bool IsSequence(Selector selector); + + private: + UPB_DISALLOW_POD_OPS(Handlers, upb::Handlers); + + friend UPB_INLINE GenericFunction *::upb_handlers_gethandler( + const upb_handlers *h, upb_selector_t s); + friend UPB_INLINE const void *::upb_handlers_gethandlerdata( + const upb_handlers *h, upb_selector_t s); + +, +UPB_DEFINE_STRUCT(upb_handlers, upb_refcounted, + const upb_msgdef *msg; + const upb_handlers **sub; + const void *top_closure_type; + upb_inttable cleanup_; + upb_status status_; // Used only when mutable. + upb_handlers_tabent table[1]; // Dynamically-sized field handler array. +)); + + +#ifdef __cplusplus + +namespace upb { + +// Convenience macros for creating a Handler object that is wrapped with a +// type-safe wrapper function that converts the "void*" parameters/returns +// of the underlying C API into nice C++ function. +// +// Sample usage: +// void OnValue1(MyClosure* c, const MyHandlerData* d, int32_t val) { +// // do stuff ... +// } +// +// // Handler that doesn't need any data bound to it. +// void OnValue2(MyClosure* c, int32_t val) { +// // do stuff ... +// } +// +// // Handler that returns bool so it can return failure if necessary. +// bool OnValue3(MyClosure* c, int32_t val) { +// // do stuff ... +// return ok; +// } +// +// // Member function handler. +// class MyClosure { +// public: +// void OnValue(int32_t val) { +// // do stuff ... +// } +// }; +// +// // Takes ownership of the MyHandlerData. +// handlers->SetInt32Handler(f1, UpbBind(OnValue1, new MyHandlerData(...))); +// handlers->SetInt32Handler(f2, UpbMakeHandler(OnValue2)); +// handlers->SetInt32Handler(f1, UpbMakeHandler(OnValue3)); +// handlers->SetInt32Handler(f2, UpbMakeHandler(&MyClosure::OnValue)); + +#ifdef UPB_CXX11 + +// In C++11, the "template" disambiguator can appear even outside templates, +// so all calls can safely use this pair of macros. + +#define UpbMakeHandler(f) upb::MatchFunc(f).template GetFunc<f>() + +// We have to be careful to only evaluate "d" once. +#define UpbBind(f, d) upb::MatchFunc(f).template GetFunc<f>((d)) + +#else + +// Prior to C++11, the "template" disambiguator may only appear inside a +// template, so the regular macro must not use "template" + +#define UpbMakeHandler(f) upb::MatchFunc(f).GetFunc<f>() + +#define UpbBind(f, d) upb::MatchFunc(f).GetFunc<f>((d)) + +#endif // UPB_CXX11 + +// This macro must be used in C++98 for calls from inside a template. But we +// define this variant in all cases; code that wants to be compatible with both +// C++98 and C++11 should always use this macro when calling from a template. +#define UpbMakeHandlerT(f) upb::MatchFunc(f).template GetFunc<f>() + +// We have to be careful to only evaluate "d" once. +#define UpbBindT(f, d) upb::MatchFunc(f).template GetFunc<f>((d)) + +// Handler: a struct that contains the (handler, data, deleter) tuple that is +// used to register all handlers. Users can Make() these directly but it's +// more convenient to use the UpbMakeHandler/UpbBind macros above. +template <class T> class Handler { + public: + // The underlying, handler function signature that upb uses internally. + typedef T FuncPtr; + + // Intentionally implicit. + template <class F> Handler(F func); + ~Handler(); + + private: + void AddCleanup(Handlers* h) const { + if (cleanup_func_) { + bool ok = h->AddCleanup(cleanup_data_, cleanup_func_); + UPB_ASSERT_VAR(ok, ok); + } + } + + UPB_DISALLOW_COPY_AND_ASSIGN(Handler); + friend class Handlers; + FuncPtr handler_; + mutable HandlerAttributes attr_; + mutable bool registered_; + void *cleanup_data_; + upb_handlerfree *cleanup_func_; +}; + +} // namespace upb + +#endif // __cplusplus + +UPB_BEGIN_EXTERN_C + +// Native C API. + +// Handler function typedefs. +typedef bool upb_startmsg_handlerfunc(void *c, const void*); +typedef bool upb_endmsg_handlerfunc(void *c, const void *, upb_status *status); +typedef void* upb_startfield_handlerfunc(void *c, const void *hd); +typedef bool upb_endfield_handlerfunc(void *c, const void *hd); +typedef bool upb_int32_handlerfunc(void *c, const void *hd, int32_t val); +typedef bool upb_int64_handlerfunc(void *c, const void *hd, int64_t val); +typedef bool upb_uint32_handlerfunc(void *c, const void *hd, uint32_t val); +typedef bool upb_uint64_handlerfunc(void *c, const void *hd, uint64_t val); +typedef bool upb_float_handlerfunc(void *c, const void *hd, float val); +typedef bool upb_double_handlerfunc(void *c, const void *hd, double val); +typedef bool upb_bool_handlerfunc(void *c, const void *hd, bool val); +typedef void *upb_startstr_handlerfunc(void *c, const void *hd, + size_t size_hint); +typedef size_t upb_string_handlerfunc(void *c, const void *hd, const char *buf, + size_t n, const upb_bufhandle* handle); + +// upb_bufhandle +size_t upb_bufhandle_objofs(const upb_bufhandle *h); + +// upb_handlerattr +void upb_handlerattr_init(upb_handlerattr *attr); +void upb_handlerattr_uninit(upb_handlerattr *attr); + +bool upb_handlerattr_sethandlerdata(upb_handlerattr *attr, const void *hd); +bool upb_handlerattr_setclosuretype(upb_handlerattr *attr, const void *type); +const void *upb_handlerattr_closuretype(const upb_handlerattr *attr); +bool upb_handlerattr_setreturnclosuretype(upb_handlerattr *attr, + const void *type); +const void *upb_handlerattr_returnclosuretype(const upb_handlerattr *attr); +bool upb_handlerattr_setalwaysok(upb_handlerattr *attr, bool alwaysok); +bool upb_handlerattr_alwaysok(const upb_handlerattr *attr); + +UPB_INLINE const void *upb_handlerattr_handlerdata( + const upb_handlerattr *attr) { + return attr->handler_data_; +} + +// upb_handlers +typedef void upb_handlers_callback(const void *closure, upb_handlers *h); +upb_handlers *upb_handlers_new(const upb_msgdef *m, + const void *owner); +const upb_handlers *upb_handlers_newfrozen(const upb_msgdef *m, + const void *owner, + upb_handlers_callback *callback, + const void *closure); +bool upb_handlers_isfrozen(const upb_handlers *h); +void upb_handlers_ref(const upb_handlers *h, const void *owner); +void upb_handlers_unref(const upb_handlers *h, const void *owner); +void upb_handlers_donateref(const upb_handlers *h, const void *from, + const void *to); +void upb_handlers_checkref(const upb_handlers *h, const void *owner); + +const upb_status *upb_handlers_status(upb_handlers *h); +void upb_handlers_clearerr(upb_handlers *h); +const upb_msgdef *upb_handlers_msgdef(const upb_handlers *h); +bool upb_handlers_addcleanup(upb_handlers *h, void *p, upb_handlerfree *hfree); + +bool upb_handlers_setstartmsg(upb_handlers *h, upb_startmsg_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setendmsg(upb_handlers *h, upb_endmsg_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setint32(upb_handlers *h, const upb_fielddef *f, + upb_int32_handlerfunc *func, upb_handlerattr *attr); +bool upb_handlers_setint64(upb_handlers *h, const upb_fielddef *f, + upb_int64_handlerfunc *func, upb_handlerattr *attr); +bool upb_handlers_setuint32(upb_handlers *h, const upb_fielddef *f, + upb_uint32_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setuint64(upb_handlers *h, const upb_fielddef *f, + upb_uint64_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setfloat(upb_handlers *h, const upb_fielddef *f, + upb_float_handlerfunc *func, upb_handlerattr *attr); +bool upb_handlers_setdouble(upb_handlers *h, const upb_fielddef *f, + upb_double_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setbool(upb_handlers *h, const upb_fielddef *f, + upb_bool_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setstartstr(upb_handlers *h, const upb_fielddef *f, + upb_startstr_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setstring(upb_handlers *h, const upb_fielddef *f, + upb_string_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setendstr(upb_handlers *h, const upb_fielddef *f, + upb_endfield_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setstartseq(upb_handlers *h, const upb_fielddef *f, + upb_startfield_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setstartsubmsg(upb_handlers *h, const upb_fielddef *f, + upb_startfield_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setendsubmsg(upb_handlers *h, const upb_fielddef *f, + upb_endfield_handlerfunc *func, + upb_handlerattr *attr); +bool upb_handlers_setendseq(upb_handlers *h, const upb_fielddef *f, + upb_endfield_handlerfunc *func, + upb_handlerattr *attr); + +bool upb_handlers_setsubhandlers(upb_handlers *h, const upb_fielddef *f, + const upb_handlers *sub); +const upb_handlers *upb_handlers_getsubhandlers(const upb_handlers *h, + const upb_fielddef *f); +const upb_handlers *upb_handlers_getsubhandlers_sel(const upb_handlers *h, + upb_selector_t sel); + +UPB_INLINE upb_func *upb_handlers_gethandler(const upb_handlers *h, + upb_selector_t s) { + return (upb_func *)h->table[s].func; +} + +bool upb_handlers_getattr(const upb_handlers *h, upb_selector_t s, + upb_handlerattr *attr); + +UPB_INLINE const void *upb_handlers_gethandlerdata(const upb_handlers *h, + upb_selector_t s) { + return upb_handlerattr_handlerdata(&h->table[s].attr); +} + +// Handler types for single fields. +// Right now we only have one for TYPE_BYTES but ones for other types +// should follow. +// +// These follow the same handlers protocol for fields of a message. +UPB_DEFINE_CLASS0(upb::BytesHandler, + public: + BytesHandler(); + ~BytesHandler(); +, +UPB_DEFINE_STRUCT0(upb_byteshandler, + upb_handlers_tabent table[3]; +)); + +void upb_byteshandler_init(upb_byteshandler *h); +void upb_byteshandler_uninit(upb_byteshandler *h); + +// Caller must ensure that "d" outlives the handlers. +// TODO(haberman): support handlerfree function for the data. +// TODO(haberman): should this have a "freeze" operation? It's not necessary +// for memory management, but could be useful to force immutability and provide +// a convenient moment to verify that all registration succeeded. +bool upb_byteshandler_setstartstr(upb_byteshandler *h, + upb_startstr_handlerfunc *func, void *d); +bool upb_byteshandler_setstring(upb_byteshandler *h, + upb_string_handlerfunc *func, void *d); +bool upb_byteshandler_setendstr(upb_byteshandler *h, + upb_endfield_handlerfunc *func, void *d); + +// "Static" methods +bool upb_handlers_freeze(upb_handlers *const *handlers, int n, upb_status *s); +upb_handlertype_t upb_handlers_getprimitivehandlertype(const upb_fielddef *f); +bool upb_handlers_getselector(const upb_fielddef *f, upb_handlertype_t type, + upb_selector_t *s); +UPB_INLINE upb_selector_t upb_handlers_getendselector(upb_selector_t start) { + return start + 1; +} + +// Internal-only. +uint32_t upb_handlers_selectorbaseoffset(const upb_fielddef *f); +uint32_t upb_handlers_selectorcount(const upb_fielddef *f); + +UPB_END_EXTERN_C + +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2011-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Inline definitions for handlers.h, which are particularly long and a bit + * tricky. + */ + +#ifndef UPB_HANDLERS_INL_H_ +#define UPB_HANDLERS_INL_H_ + +#include <limits.h> + +// Type detection and typedefs for integer types. +// For platforms where there are multiple 32-bit or 64-bit types, we need to be +// able to enumerate them so we can properly create overloads for all variants. +// +// If any platform existed where there were three integer types with the same +// size, this would have to become more complicated. For example, short, int, +// and long could all be 32-bits. Even more diabolically, short, int, long, +// and long long could all be 64 bits and still be standard-compliant. +// However, few platforms are this strange, and it's unlikely that upb will be +// used on the strangest ones. + +// Can't count on stdint.h limits like INT32_MAX, because in C++ these are +// only defined when __STDC_LIMIT_MACROS are defined before the *first* include +// of stdint.h. We can't guarantee that someone else didn't include these first +// without defining __STDC_LIMIT_MACROS. +#define UPB_INT32_MAX 0x7fffffffLL +#define UPB_INT32_MIN (-UPB_INT32_MAX - 1) +#define UPB_INT64_MAX 0x7fffffffffffffffLL +#define UPB_INT64_MIN (-UPB_INT64_MAX - 1) + +#if INT_MAX == UPB_INT32_MAX && INT_MIN == UPB_INT32_MIN +#define UPB_INT_IS_32BITS 1 +#endif + +#if LONG_MAX == UPB_INT32_MAX && LONG_MIN == UPB_INT32_MIN +#define UPB_LONG_IS_32BITS 1 +#endif + +#if LONG_MAX == UPB_INT64_MAX && LONG_MIN == UPB_INT64_MIN +#define UPB_LONG_IS_64BITS 1 +#endif + +#if LLONG_MAX == UPB_INT64_MAX && LLONG_MIN == UPB_INT64_MIN +#define UPB_LLONG_IS_64BITS 1 +#endif + +// We use macros instead of typedefs so we can undefine them later and avoid +// leaking them outside this header file. +#if UPB_INT_IS_32BITS +#define UPB_INT32_T int +#define UPB_UINT32_T unsigned int + +#if UPB_LONG_IS_32BITS +#define UPB_TWO_32BIT_TYPES 1 +#define UPB_INT32ALT_T long +#define UPB_UINT32ALT_T unsigned long +#endif // UPB_LONG_IS_32BITS + +#elif UPB_LONG_IS_32BITS // && !UPB_INT_IS_32BITS +#define UPB_INT32_T long +#define UPB_UINT32_T unsigned long +#endif // UPB_INT_IS_32BITS + + +#if UPB_LONG_IS_64BITS +#define UPB_INT64_T long +#define UPB_UINT64_T unsigned long + +#if UPB_LLONG_IS_64BITS +#define UPB_TWO_64BIT_TYPES 1 +#define UPB_INT64ALT_T long long +#define UPB_UINT64ALT_T unsigned long long +#endif // UPB_LLONG_IS_64BITS + +#elif UPB_LLONG_IS_64BITS // && !UPB_LONG_IS_64BITS +#define UPB_INT64_T long long +#define UPB_UINT64_T unsigned long long +#endif // UPB_LONG_IS_64BITS + +#undef UPB_INT32_MAX +#undef UPB_INT32_MIN +#undef UPB_INT64_MAX +#undef UPB_INT64_MIN +#undef UPB_INT_IS_32BITS +#undef UPB_LONG_IS_32BITS +#undef UPB_LONG_IS_64BITS +#undef UPB_LLONG_IS_64BITS + +// C inline methods. + +// upb_bufhandle +UPB_INLINE void upb_bufhandle_init(upb_bufhandle *h) { + h->obj_ = NULL; + h->objtype_ = NULL; + h->buf_ = NULL; + h->objofs_ = 0; +} +UPB_INLINE void upb_bufhandle_uninit(upb_bufhandle *h) { + UPB_UNUSED(h); +} +UPB_INLINE void upb_bufhandle_setobj(upb_bufhandle *h, const void *obj, + const void *type) { + h->obj_ = obj; + h->objtype_ = type; +} +UPB_INLINE void upb_bufhandle_setbuf(upb_bufhandle *h, const char *buf, + size_t ofs) { + h->buf_ = buf; + h->objofs_ = ofs; +} +UPB_INLINE const void *upb_bufhandle_obj(const upb_bufhandle *h) { + return h->obj_; +} +UPB_INLINE const void *upb_bufhandle_objtype(const upb_bufhandle *h) { + return h->objtype_; +} +UPB_INLINE const char *upb_bufhandle_buf(const upb_bufhandle *h) { + return h->buf_; +} + + +#ifdef __cplusplus + +namespace upb { + +typedef void CleanupFunc(void *ptr); + +// Template to remove "const" from "const T*" and just return "T*". +// +// We define a nonsense default because otherwise it will fail to instantiate as +// a function parameter type even in cases where we don't expect any caller to +// actually match the overload. +class CouldntRemoveConst {}; +template <class T> struct remove_constptr { typedef CouldntRemoveConst type; }; +template <class T> struct remove_constptr<const T *> { typedef T *type; }; + +// Template that we use below to remove a template specialization from +// consideration if it matches a specific type. +template <class T, class U> struct disable_if_same { typedef void Type; }; +template <class T> struct disable_if_same<T, T> {}; + +template <class T> void DeletePointer(void *p) { delete static_cast<T>(p); } + +template <class T1, class T2> +struct FirstUnlessVoid { + typedef T1 value; +}; + +template <class T2> +struct FirstUnlessVoid<void, T2> { + typedef T2 value; +}; + +template<class T, class U> +struct is_same { + static bool value; +}; + +template<class T> +struct is_same<T, T> { + static bool value; +}; + +template<class T, class U> +bool is_same<T, U>::value = false; + +template<class T> +bool is_same<T, T>::value = true; + +// FuncInfo //////////////////////////////////////////////////////////////////// + +// Info about the user's original, pre-wrapped function. +template <class C, class R = void> +struct FuncInfo { + // The type of the closure that the function takes (its first param). + typedef C Closure; + + // The return type. + typedef R Return; +}; + +// Func //////////////////////////////////////////////////////////////////////// + +// Func1, Func2, Func3: Template classes representing a function and its +// signature. +// +// Since the function is a template parameter, calling the function can be +// inlined at compile-time and does not require a function pointer at runtime. +// These functions are not bound to a handler data so have no data or cleanup +// handler. +struct UnboundFunc { + CleanupFunc *GetCleanup() { return NULL; } + void *GetData() { return NULL; } +}; + +template <class R, class P1, R F(P1), class I> +struct Func1 : public UnboundFunc { + typedef R Return; + typedef I FuncInfo; + static R Call(P1 p1) { return F(p1); } +}; + +template <class R, class P1, class P2, R F(P1, P2), class I> +struct Func2 : public UnboundFunc { + typedef R Return; + typedef I FuncInfo; + static R Call(P1 p1, P2 p2) { return F(p1, p2); } +}; + +template <class R, class P1, class P2, class P3, R F(P1, P2, P3), class I> +struct Func3 : public UnboundFunc { + typedef R Return; + typedef I FuncInfo; + static R Call(P1 p1, P2 p2, P3 p3) { return F(p1, p2, p3); } +}; + +template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4), + class I> +struct Func4 : public UnboundFunc { + typedef R Return; + typedef I FuncInfo; + static R Call(P1 p1, P2 p2, P3 p3, P4 p4) { return F(p1, p2, p3, p4); } +}; + +template <class R, class P1, class P2, class P3, class P4, class P5, + R F(P1, P2, P3, P4, P5), class I> +struct Func5 : public UnboundFunc { + typedef R Return; + typedef I FuncInfo; + static R Call(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) { + return F(p1, p2, p3, p4, p5); + } +}; + +// BoundFunc /////////////////////////////////////////////////////////////////// + +// BoundFunc2, BoundFunc3: Like Func2/Func3 except also contains a value that +// shall be bound to the function's second parameter. +// +// Note that the second parameter is a const pointer, but our stored bound value +// is non-const so we can free it when the handlers are destroyed. +template <class T> +struct BoundFunc { + typedef typename remove_constptr<T>::type MutableP2; + explicit BoundFunc(MutableP2 data_) : data(data_) {} + CleanupFunc *GetCleanup() { return &DeletePointer<MutableP2>; } + MutableP2 GetData() { return data; } + MutableP2 data; +}; + +template <class R, class P1, class P2, R F(P1, P2), class I> +struct BoundFunc2 : public BoundFunc<P2> { + typedef BoundFunc<P2> Base; + typedef I FuncInfo; + explicit BoundFunc2(typename Base::MutableP2 arg) : Base(arg) {} +}; + +template <class R, class P1, class P2, class P3, R F(P1, P2, P3), class I> +struct BoundFunc3 : public BoundFunc<P2> { + typedef BoundFunc<P2> Base; + typedef I FuncInfo; + explicit BoundFunc3(typename Base::MutableP2 arg) : Base(arg) {} +}; + +template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4), + class I> +struct BoundFunc4 : public BoundFunc<P2> { + typedef BoundFunc<P2> Base; + typedef I FuncInfo; + explicit BoundFunc4(typename Base::MutableP2 arg) : Base(arg) {} +}; + +template <class R, class P1, class P2, class P3, class P4, class P5, + R F(P1, P2, P3, P4, P5), class I> +struct BoundFunc5 : public BoundFunc<P2> { + typedef BoundFunc<P2> Base; + typedef I FuncInfo; + explicit BoundFunc5(typename Base::MutableP2 arg) : Base(arg) {} +}; + +// FuncSig ///////////////////////////////////////////////////////////////////// + +// FuncSig1, FuncSig2, FuncSig3: template classes reflecting a function +// *signature*, but without a specific function attached. +// +// These classes contain member functions that can be invoked with a +// specific function to return a Func/BoundFunc class. +template <class R, class P1> +struct FuncSig1 { + template <R F(P1)> + Func1<R, P1, F, FuncInfo<P1, R> > GetFunc() { + return Func1<R, P1, F, FuncInfo<P1, R> >(); + } +}; + +template <class R, class P1, class P2> +struct FuncSig2 { + template <R F(P1, P2)> + Func2<R, P1, P2, F, FuncInfo<P1, R> > GetFunc() { + return Func2<R, P1, P2, F, FuncInfo<P1, R> >(); + } + + template <R F(P1, P2)> + BoundFunc2<R, P1, P2, F, FuncInfo<P1, R> > GetFunc( + typename remove_constptr<P2>::type param2) { + return BoundFunc2<R, P1, P2, F, FuncInfo<P1, R> >(param2); + } +}; + +template <class R, class P1, class P2, class P3> +struct FuncSig3 { + template <R F(P1, P2, P3)> + Func3<R, P1, P2, P3, F, FuncInfo<P1, R> > GetFunc() { + return Func3<R, P1, P2, P3, F, FuncInfo<P1, R> >(); + } + + template <R F(P1, P2, P3)> + BoundFunc3<R, P1, P2, P3, F, FuncInfo<P1, R> > GetFunc( + typename remove_constptr<P2>::type param2) { + return BoundFunc3<R, P1, P2, P3, F, FuncInfo<P1, R> >(param2); + } +}; + +template <class R, class P1, class P2, class P3, class P4> +struct FuncSig4 { + template <R F(P1, P2, P3, P4)> + Func4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> > GetFunc() { + return Func4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> >(); + } + + template <R F(P1, P2, P3, P4)> + BoundFunc4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> > GetFunc( + typename remove_constptr<P2>::type param2) { + return BoundFunc4<R, P1, P2, P3, P4, F, FuncInfo<P1, R> >(param2); + } +}; + +template <class R, class P1, class P2, class P3, class P4, class P5> +struct FuncSig5 { + template <R F(P1, P2, P3, P4, P5)> + Func5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> > GetFunc() { + return Func5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> >(); + } + + template <R F(P1, P2, P3, P4, P5)> + BoundFunc5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> > GetFunc( + typename remove_constptr<P2>::type param2) { + return BoundFunc5<R, P1, P2, P3, P4, P5, F, FuncInfo<P1, R> >(param2); + } +}; + +// Overloaded template function that can construct the appropriate FuncSig* +// class given a function pointer by deducing the template parameters. +template <class R, class P1> +inline FuncSig1<R, P1> MatchFunc(R (*f)(P1)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return FuncSig1<R, P1>(); +} + +template <class R, class P1, class P2> +inline FuncSig2<R, P1, P2> MatchFunc(R (*f)(P1, P2)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return FuncSig2<R, P1, P2>(); +} + +template <class R, class P1, class P2, class P3> +inline FuncSig3<R, P1, P2, P3> MatchFunc(R (*f)(P1, P2, P3)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return FuncSig3<R, P1, P2, P3>(); +} + +template <class R, class P1, class P2, class P3, class P4> +inline FuncSig4<R, P1, P2, P3, P4> MatchFunc(R (*f)(P1, P2, P3, P4)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return FuncSig4<R, P1, P2, P3, P4>(); +} + +template <class R, class P1, class P2, class P3, class P4, class P5> +inline FuncSig5<R, P1, P2, P3, P4, P5> MatchFunc(R (*f)(P1, P2, P3, P4, P5)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return FuncSig5<R, P1, P2, P3, P4, P5>(); +} + +// MethodSig /////////////////////////////////////////////////////////////////// + +// CallMethod*: a function template that calls a given method. +template <class R, class C, R (C::*F)()> +R CallMethod0(C *obj) { + return ((*obj).*F)(); +} + +template <class R, class C, class P1, R (C::*F)(P1)> +R CallMethod1(C *obj, P1 arg1) { + return ((*obj).*F)(arg1); +} + +template <class R, class C, class P1, class P2, R (C::*F)(P1, P2)> +R CallMethod2(C *obj, P1 arg1, P2 arg2) { + return ((*obj).*F)(arg1, arg2); +} + +template <class R, class C, class P1, class P2, class P3, R (C::*F)(P1, P2, P3)> +R CallMethod3(C *obj, P1 arg1, P2 arg2, P3 arg3) { + return ((*obj).*F)(arg1, arg2, arg3); +} + +template <class R, class C, class P1, class P2, class P3, class P4, + R (C::*F)(P1, P2, P3, P4)> +R CallMethod4(C *obj, P1 arg1, P2 arg2, P3 arg3, P4 arg4) { + return ((*obj).*F)(arg1, arg2, arg3, arg4); +} + +// MethodSig: like FuncSig, but for member functions. +// +// GetFunc() returns a normal FuncN object, so after calling GetFunc() no +// more logic is required to special-case methods. +template <class R, class C> +struct MethodSig0 { + template <R (C::*F)()> + Func1<R, C *, CallMethod0<R, C, F>, FuncInfo<C *, R> > GetFunc() { + return Func1<R, C *, CallMethod0<R, C, F>, FuncInfo<C *, R> >(); + } +}; + +template <class R, class C, class P1> +struct MethodSig1 { + template <R (C::*F)(P1)> + Func2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> > GetFunc() { + return Func2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> >(); + } + + template <R (C::*F)(P1)> + BoundFunc2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> > GetFunc( + typename remove_constptr<P1>::type param1) { + return BoundFunc2<R, C *, P1, CallMethod1<R, C, P1, F>, FuncInfo<C *, R> >( + param1); + } +}; + +template <class R, class C, class P1, class P2> +struct MethodSig2 { + template <R (C::*F)(P1, P2)> + Func3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>, FuncInfo<C *, R> > + GetFunc() { + return Func3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>, + FuncInfo<C *, R> >(); + } + + template <R (C::*F)(P1, P2)> + BoundFunc3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>, FuncInfo<C *, R> > + GetFunc(typename remove_constptr<P1>::type param1) { + return BoundFunc3<R, C *, P1, P2, CallMethod2<R, C, P1, P2, F>, + FuncInfo<C *, R> >(param1); + } +}; + +template <class R, class C, class P1, class P2, class P3> +struct MethodSig3 { + template <R (C::*F)(P1, P2, P3)> + Func4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>, FuncInfo<C *, R> > + GetFunc() { + return Func4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>, + FuncInfo<C *, R> >(); + } + + template <R (C::*F)(P1, P2, P3)> + BoundFunc4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>, + FuncInfo<C *, R> > + GetFunc(typename remove_constptr<P1>::type param1) { + return BoundFunc4<R, C *, P1, P2, P3, CallMethod3<R, C, P1, P2, P3, F>, + FuncInfo<C *, R> >(param1); + } +}; + +template <class R, class C, class P1, class P2, class P3, class P4> +struct MethodSig4 { + template <R (C::*F)(P1, P2, P3, P4)> + Func5<R, C *, P1, P2, P3, P4, CallMethod4<R, C, P1, P2, P3, P4, F>, + FuncInfo<C *, R> > + GetFunc() { + return Func5<R, C *, P1, P2, P3, P4, CallMethod4<R, C, P1, P2, P3, P4, F>, + FuncInfo<C *, R> >(); + } + + template <R (C::*F)(P1, P2, P3, P4)> + BoundFunc5<R, C *, P1, P2, P3, P4, CallMethod4<R, C, P1, P2, P3, P4, F>, + FuncInfo<C *, R> > + GetFunc(typename remove_constptr<P1>::type param1) { + return BoundFunc5<R, C *, P1, P2, P3, P4, + CallMethod4<R, C, P1, P2, P3, P4, F>, FuncInfo<C *, R> >( + param1); + } +}; + +template <class R, class C> +inline MethodSig0<R, C> MatchFunc(R (C::*f)()) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return MethodSig0<R, C>(); +} + +template <class R, class C, class P1> +inline MethodSig1<R, C, P1> MatchFunc(R (C::*f)(P1)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return MethodSig1<R, C, P1>(); +} + +template <class R, class C, class P1, class P2> +inline MethodSig2<R, C, P1, P2> MatchFunc(R (C::*f)(P1, P2)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return MethodSig2<R, C, P1, P2>(); +} + +template <class R, class C, class P1, class P2, class P3> +inline MethodSig3<R, C, P1, P2, P3> MatchFunc(R (C::*f)(P1, P2, P3)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return MethodSig3<R, C, P1, P2, P3>(); +} + +template <class R, class C, class P1, class P2, class P3, class P4> +inline MethodSig4<R, C, P1, P2, P3, P4> MatchFunc(R (C::*f)(P1, P2, P3, P4)) { + UPB_UNUSED(f); // Only used for template parameter deduction. + return MethodSig4<R, C, P1, P2, P3, P4>(); +} + +// MaybeWrapReturn ///////////////////////////////////////////////////////////// + +// Template class that attempts to wrap the return value of the function so it +// matches the expected type. There are two main adjustments it may make: +// +// 1. If the function returns void, make it return the expected type and with +// a value that always indicates success. +// 2. If the function is expected to return void* but doesn't, wrap it so it +// does (either by returning the closure param if the wrapped function +// returns void or by casting a different pointer type to void* for +// return). + +// Template parameters are FuncN type and desired return type. +template <class F, class R, class Enable = void> +struct MaybeWrapReturn; + +// If the return type matches, return the given function unwrapped. +template <class F> +struct MaybeWrapReturn<F, typename F::Return> { + typedef F Func; +}; + +// Function wrapper that munges the return value from void to (bool)true. +template <class P1, class P2, void F(P1, P2)> +bool ReturnTrue2(P1 p1, P2 p2) { + F(p1, p2); + return true; +} + +template <class P1, class P2, class P3, void F(P1, P2, P3)> +bool ReturnTrue3(P1 p1, P2 p2, P3 p3) { + F(p1, p2, p3); + return true; +} + +// Function wrapper that munges the return value from void to (void*)arg1 +template <class P1, class P2, void F(P1, P2)> +void *ReturnClosure2(P1 p1, P2 p2) { + F(p1, p2); + return p1; +} + +template <class P1, class P2, class P3, void F(P1, P2, P3)> +void *ReturnClosure3(P1 p1, P2 p2, P3 p3) { + F(p1, p2, p3); + return p1; +} + +// Function wrapper that munges the return value from R to void*. +template <class R, class P1, class P2, R F(P1, P2)> +void *CastReturnToVoidPtr2(P1 p1, P2 p2) { + return F(p1, p2); +} + +template <class R, class P1, class P2, class P3, R F(P1, P2, P3)> +void *CastReturnToVoidPtr3(P1 p1, P2 p2, P3 p3) { + return F(p1, p2, p3); +} + +// Function wrapper that munges the return value from bool to void*. +template <class P1, class P2, bool F(P1, P2)> +void *ReturnClosureOrBreak2(P1 p1, P2 p2) { + return F(p1, p2) ? p1 : UPB_BREAK; +} + +template <class P1, class P2, class P3, bool F(P1, P2, P3)> +void *ReturnClosureOrBreak3(P1 p1, P2 p2, P3 p3) { + return F(p1, p2, p3) ? p1 : UPB_BREAK; +} + +// For the string callback, which takes five params, returns the size param. +template <class P1, class P2, + void F(P1, P2, const char *, size_t, const BufferHandle *)> +size_t ReturnStringLen(P1 p1, P2 p2, const char *p3, size_t p4, + const BufferHandle *p5) { + F(p1, p2, p3, p4, p5); + return p4; +} + +// For the string callback, which takes five params, returns the size param or +// zero. +template <class P1, class P2, + bool F(P1, P2, const char *, size_t, const BufferHandle *)> +size_t ReturnNOr0(P1 p1, P2 p2, const char *p3, size_t p4, + const BufferHandle *p5) { + return F(p1, p2, p3, p4, p5) ? p4 : 0; +} + +// If we have a function returning void but want a function returning bool, wrap +// it in a function that returns true. +template <class P1, class P2, void F(P1, P2), class I> +struct MaybeWrapReturn<Func2<void, P1, P2, F, I>, bool> { + typedef Func2<bool, P1, P2, ReturnTrue2<P1, P2, F>, I> Func; +}; + +template <class P1, class P2, class P3, void F(P1, P2, P3), class I> +struct MaybeWrapReturn<Func3<void, P1, P2, P3, F, I>, bool> { + typedef Func3<bool, P1, P2, P3, ReturnTrue3<P1, P2, P3, F>, I> Func; +}; + +// If our function returns void but we want one returning void*, wrap it in a +// function that returns the first argument. +template <class P1, class P2, void F(P1, P2), class I> +struct MaybeWrapReturn<Func2<void, P1, P2, F, I>, void *> { + typedef Func2<void *, P1, P2, ReturnClosure2<P1, P2, F>, I> Func; +}; + +template <class P1, class P2, class P3, void F(P1, P2, P3), class I> +struct MaybeWrapReturn<Func3<void, P1, P2, P3, F, I>, void *> { + typedef Func3<void *, P1, P2, P3, ReturnClosure3<P1, P2, P3, F>, I> Func; +}; + +// If our function returns R* but we want one returning void*, wrap it in a +// function that casts to void*. +template <class R, class P1, class P2, R *F(P1, P2), class I> +struct MaybeWrapReturn<Func2<R *, P1, P2, F, I>, void *, + typename disable_if_same<R *, void *>::Type> { + typedef Func2<void *, P1, P2, CastReturnToVoidPtr2<R *, P1, P2, F>, I> Func; +}; + +template <class R, class P1, class P2, class P3, R *F(P1, P2, P3), class I> +struct MaybeWrapReturn<Func3<R *, P1, P2, P3, F, I>, void *, + typename disable_if_same<R *, void *>::Type> { + typedef Func3<void *, P1, P2, P3, CastReturnToVoidPtr3<R *, P1, P2, P3, F>, I> + Func; +}; + +// If our function returns bool but we want one returning void*, wrap it in a +// function that returns either the first param or UPB_BREAK. +template <class P1, class P2, bool F(P1, P2), class I> +struct MaybeWrapReturn<Func2<bool, P1, P2, F, I>, void *> { + typedef Func2<void *, P1, P2, ReturnClosureOrBreak2<P1, P2, F>, I> Func; +}; + +template <class P1, class P2, class P3, bool F(P1, P2, P3), class I> +struct MaybeWrapReturn<Func3<bool, P1, P2, P3, F, I>, void *> { + typedef Func3<void *, P1, P2, P3, ReturnClosureOrBreak3<P1, P2, P3, F>, I> + Func; +}; + +// If our function returns void but we want one returning size_t, wrap it in a +// function that returns the size argument. +template <class P1, class P2, + void F(P1, P2, const char *, size_t, const BufferHandle *), class I> +struct MaybeWrapReturn< + Func5<void, P1, P2, const char *, size_t, const BufferHandle *, F, I>, + size_t> { + typedef Func5<size_t, P1, P2, const char *, size_t, const BufferHandle *, + ReturnStringLen<P1, P2, F>, I> Func; +}; + +// If our function returns bool but we want one returning size_t, wrap it in a +// function that returns either 0 or the buf size. +template <class P1, class P2, + bool F(P1, P2, const char *, size_t, const BufferHandle *), class I> +struct MaybeWrapReturn< + Func5<bool, P1, P2, const char *, size_t, const BufferHandle *, F, I>, + size_t> { + typedef Func5<size_t, P1, P2, const char *, size_t, const BufferHandle *, + ReturnNOr0<P1, P2, F>, I> Func; +}; + +// ConvertParams /////////////////////////////////////////////////////////////// + +// Template class that converts the function parameters if necessary, and +// ignores the HandlerData parameter if appropriate. +// +// Template parameter is the are FuncN function type. +template <class F, class T> +struct ConvertParams; + +// Function that discards the handler data parameter. +template <class R, class P1, R F(P1)> +R IgnoreHandlerData2(void *p1, const void *hd) { + UPB_UNUSED(hd); + return F(static_cast<P1>(p1)); +} + +template <class R, class P1, class P2Wrapper, class P2Wrapped, + R F(P1, P2Wrapped)> +R IgnoreHandlerData3(void *p1, const void *hd, P2Wrapper p2) { + UPB_UNUSED(hd); + return F(static_cast<P1>(p1), p2); +} + +template <class R, class P1, class P2, class P3, R F(P1, P2, P3)> +R IgnoreHandlerData4(void *p1, const void *hd, P2 p2, P3 p3) { + UPB_UNUSED(hd); + return F(static_cast<P1>(p1), p2, p3); +} + +template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4)> +R IgnoreHandlerData5(void *p1, const void *hd, P2 p2, P3 p3, P4 p4) { + UPB_UNUSED(hd); + return F(static_cast<P1>(p1), p2, p3, p4); +} + +template <class R, class P1, R F(P1, const char*, size_t)> +R IgnoreHandlerDataIgnoreHandle(void *p1, const void *hd, const char *p2, + size_t p3, const BufferHandle *handle) { + UPB_UNUSED(hd); + UPB_UNUSED(handle); + return F(static_cast<P1>(p1), p2, p3); +} + +// Function that casts the handler data parameter. +template <class R, class P1, class P2, R F(P1, P2)> +R CastHandlerData2(void *c, const void *hd) { + return F(static_cast<P1>(c), static_cast<P2>(hd)); +} + +template <class R, class P1, class P2, class P3Wrapper, class P3Wrapped, + R F(P1, P2, P3Wrapped)> +R CastHandlerData3(void *c, const void *hd, P3Wrapper p3) { + return F(static_cast<P1>(c), static_cast<P2>(hd), p3); +} + +template <class R, class P1, class P2, class P3, class P4, class P5, + R F(P1, P2, P3, P4, P5)> +R CastHandlerData5(void *c, const void *hd, P3 p3, P4 p4, P5 p5) { + return F(static_cast<P1>(c), static_cast<P2>(hd), p3, p4, p5); +} + +template <class R, class P1, class P2, R F(P1, P2, const char *, size_t)> +R CastHandlerDataIgnoreHandle(void *c, const void *hd, const char *p3, + size_t p4, const BufferHandle *handle) { + UPB_UNUSED(handle); + return F(static_cast<P1>(c), static_cast<P2>(hd), p3, p4); +} + +// For unbound functions, ignore the handler data. +template <class R, class P1, R F(P1), class I, class T> +struct ConvertParams<Func1<R, P1, F, I>, T> { + typedef Func2<R, void *, const void *, IgnoreHandlerData2<R, P1, F>, I> Func; +}; + +template <class R, class P1, class P2, R F(P1, P2), class I, + class R2, class P1_2, class P2_2, class P3_2> +struct ConvertParams<Func2<R, P1, P2, F, I>, + R2 (*)(P1_2, P2_2, P3_2)> { + typedef Func3<R, void *, const void *, P3_2, + IgnoreHandlerData3<R, P1, P3_2, P2, F>, I> Func; +}; + +// For StringBuffer only; this ignores both the handler data and the +// BufferHandle. +template <class R, class P1, R F(P1, const char *, size_t), class I, class T> +struct ConvertParams<Func3<R, P1, const char *, size_t, F, I>, T> { + typedef Func5<R, void *, const void *, const char *, size_t, + const BufferHandle *, IgnoreHandlerDataIgnoreHandle<R, P1, F>, + I> Func; +}; + +template <class R, class P1, class P2, class P3, class P4, R F(P1, P2, P3, P4), + class I, class T> +struct ConvertParams<Func4<R, P1, P2, P3, P4, F, I>, T> { + typedef Func5<R, void *, const void *, P2, P3, P4, + IgnoreHandlerData5<R, P1, P2, P3, P4, F>, I> Func; +}; + +// For bound functions, cast the handler data. +template <class R, class P1, class P2, R F(P1, P2), class I, class T> +struct ConvertParams<BoundFunc2<R, P1, P2, F, I>, T> { + typedef Func2<R, void *, const void *, CastHandlerData2<R, P1, P2, F>, I> + Func; +}; + +template <class R, class P1, class P2, class P3, R F(P1, P2, P3), class I, + class R2, class P1_2, class P2_2, class P3_2> +struct ConvertParams<BoundFunc3<R, P1, P2, P3, F, I>, + R2 (*)(P1_2, P2_2, P3_2)> { + typedef Func3<R, void *, const void *, P3_2, + CastHandlerData3<R, P1, P2, P3_2, P3, F>, I> Func; +}; + +// For StringBuffer only; this ignores the BufferHandle. +template <class R, class P1, class P2, R F(P1, P2, const char *, size_t), + class I, class T> +struct ConvertParams<BoundFunc4<R, P1, P2, const char *, size_t, F, I>, T> { + typedef Func5<R, void *, const void *, const char *, size_t, + const BufferHandle *, CastHandlerDataIgnoreHandle<R, P1, P2, F>, + I> Func; +}; + +template <class R, class P1, class P2, class P3, class P4, class P5, + R F(P1, P2, P3, P4, P5), class I, class T> +struct ConvertParams<BoundFunc5<R, P1, P2, P3, P4, P5, F, I>, T> { + typedef Func5<R, void *, const void *, P3, P4, P5, + CastHandlerData5<R, P1, P2, P3, P4, P5, F>, I> Func; +}; + +// utype/ltype are upper/lower-case, ctype is canonical C type, vtype is +// variant C type. +#define TYPE_METHODS(utype, ltype, ctype, vtype) \ + template <> struct CanonicalType<vtype> { \ + typedef ctype Type; \ + }; \ + template <> \ + inline bool Handlers::SetValueHandler<vtype>( \ + const FieldDef *f, \ + const Handlers::utype ## Handler& handler) { \ + assert(!handler.registered_); \ + handler.AddCleanup(this); \ + handler.registered_ = true; \ + return upb_handlers_set##ltype(this, f, handler.handler_, &handler.attr_); \ + } \ + +TYPE_METHODS(Double, double, double, double); +TYPE_METHODS(Float, float, float, float); +TYPE_METHODS(UInt64, uint64, uint64_t, UPB_UINT64_T); +TYPE_METHODS(UInt32, uint32, uint32_t, UPB_UINT32_T); +TYPE_METHODS(Int64, int64, int64_t, UPB_INT64_T); +TYPE_METHODS(Int32, int32, int32_t, UPB_INT32_T); +TYPE_METHODS(Bool, bool, bool, bool); + +#ifdef UPB_TWO_32BIT_TYPES +TYPE_METHODS(Int32, int32, int32_t, UPB_INT32ALT_T); +TYPE_METHODS(UInt32, uint32, uint32_t, UPB_UINT32ALT_T); +#endif + +#ifdef UPB_TWO_64BIT_TYPES +TYPE_METHODS(Int64, int64, int64_t, UPB_INT64ALT_T); +TYPE_METHODS(UInt64, uint64, uint64_t, UPB_UINT64ALT_T); +#endif +#undef TYPE_METHODS + +template <> struct CanonicalType<Status*> { + typedef Status* Type; +}; + +// Type methods that are only one-per-canonical-type and not one-per-cvariant. + +#define TYPE_METHODS(utype, ctype) \ + inline bool Handlers::Set##utype##Handler(const FieldDef *f, \ + const utype##Handler &h) { \ + return SetValueHandler<ctype>(f, h); \ + } \ + +TYPE_METHODS(Double, double); +TYPE_METHODS(Float, float); +TYPE_METHODS(UInt64, uint64_t); +TYPE_METHODS(UInt32, uint32_t); +TYPE_METHODS(Int64, int64_t); +TYPE_METHODS(Int32, int32_t); +TYPE_METHODS(Bool, bool); +#undef TYPE_METHODS + +template <class F> struct ReturnOf; + +template <class R, class P1, class P2> +struct ReturnOf<R (*)(P1, P2)> { + typedef R Return; +}; + +template <class R, class P1, class P2, class P3> +struct ReturnOf<R (*)(P1, P2, P3)> { + typedef R Return; +}; + +template <class R, class P1, class P2, class P3, class P4> +struct ReturnOf<R (*)(P1, P2, P3, P4)> { + typedef R Return; +}; + +template <class R, class P1, class P2, class P3, class P4, class P5> +struct ReturnOf<R (*)(P1, P2, P3, P4, P5)> { + typedef R Return; +}; + +template<class T> const void *UniquePtrForType() { + static const char ch = 0; + return &ch; +} + +template <class T> +template <class F> +inline Handler<T>::Handler(F func) + : registered_(false), + cleanup_data_(func.GetData()), + cleanup_func_(func.GetCleanup()) { + upb_handlerattr_sethandlerdata(&attr_, func.GetData()); + typedef typename ReturnOf<T>::Return Return; + typedef typename ConvertParams<F, T>::Func ConvertedParamsFunc; + typedef typename MaybeWrapReturn<ConvertedParamsFunc, Return>::Func + ReturnWrappedFunc; + handler_ = ReturnWrappedFunc().Call; + + // Set attributes based on what templates can statically tell us about the + // user's function. + + // If the original function returns void, then we know that we wrapped it to + // always return ok. + bool always_ok = is_same<typename F::FuncInfo::Return, void>::value; + attr_.SetAlwaysOk(always_ok); + + // Closure parameter and return type. + attr_.SetClosureType(UniquePtrForType<typename F::FuncInfo::Closure>()); + + // We use the closure type (from the first parameter) if the return type is + // void. This is all nonsense for non START* handlers, but it doesn't matter + // because in that case the value will be ignored. + typedef typename FirstUnlessVoid<typename F::FuncInfo::Return, + typename F::FuncInfo::Closure>::value + EffectiveReturn; + attr_.SetReturnClosureType(UniquePtrForType<EffectiveReturn>()); +} + +template <class T> +inline Handler<T>::~Handler() { + assert(registered_); +} + +inline HandlerAttributes::HandlerAttributes() { upb_handlerattr_init(this); } +inline HandlerAttributes::~HandlerAttributes() { upb_handlerattr_uninit(this); } +inline bool HandlerAttributes::SetHandlerData(const void *hd) { + return upb_handlerattr_sethandlerdata(this, hd); +} +inline const void* HandlerAttributes::handler_data() const { + return upb_handlerattr_handlerdata(this); +} +inline bool HandlerAttributes::SetClosureType(const void *type) { + return upb_handlerattr_setclosuretype(this, type); +} +inline const void* HandlerAttributes::closure_type() const { + return upb_handlerattr_closuretype(this); +} +inline bool HandlerAttributes::SetReturnClosureType(const void *type) { + return upb_handlerattr_setreturnclosuretype(this, type); +} +inline const void* HandlerAttributes::return_closure_type() const { + return upb_handlerattr_returnclosuretype(this); +} +inline bool HandlerAttributes::SetAlwaysOk(bool always_ok) { + return upb_handlerattr_setalwaysok(this, always_ok); +} +inline bool HandlerAttributes::always_ok() const { + return upb_handlerattr_alwaysok(this); +} + +inline BufferHandle::BufferHandle() { upb_bufhandle_init(this); } +inline BufferHandle::~BufferHandle() { upb_bufhandle_uninit(this); } +inline const char* BufferHandle::buffer() const { + return upb_bufhandle_buf(this); +} +inline size_t BufferHandle::object_offset() const { + return upb_bufhandle_objofs(this); +} +inline void BufferHandle::SetBuffer(const char* buf, size_t ofs) { + upb_bufhandle_setbuf(this, buf, ofs); +} +template <class T> +void BufferHandle::SetAttachedObject(const T* obj) { + upb_bufhandle_setobj(this, obj, UniquePtrForType<T>()); +} +template <class T> +const T* BufferHandle::GetAttachedObject() const { + return upb_bufhandle_objtype(this) == UniquePtrForType<T>() + ? static_cast<const T *>(upb_bufhandle_obj(this)) + : NULL; +} + +inline reffed_ptr<Handlers> Handlers::New(const MessageDef *m) { + upb_handlers *h = upb_handlers_new(m, &h); + return reffed_ptr<Handlers>(h, &h); +} +inline reffed_ptr<const Handlers> Handlers::NewFrozen( + const MessageDef *m, upb_handlers_callback *callback, + const void *closure) { + const upb_handlers *h = upb_handlers_newfrozen(m, &h, callback, closure); + return reffed_ptr<const Handlers>(h, &h); +} +inline bool Handlers::IsFrozen() const { return upb_handlers_isfrozen(this); } +inline void Handlers::Ref(const void *owner) const { + upb_handlers_ref(this, owner); +} +inline void Handlers::Unref(const void *owner) const { + upb_handlers_unref(this, owner); +} +inline void Handlers::DonateRef(const void *from, const void *to) const { + upb_handlers_donateref(this, from, to); +} +inline void Handlers::CheckRef(const void *owner) const { + upb_handlers_checkref(this, owner); +} +inline const Status* Handlers::status() { + return upb_handlers_status(this); +} +inline void Handlers::ClearError() { + return upb_handlers_clearerr(this); +} +inline bool Handlers::Freeze(Status *s) { + upb::Handlers* h = this; + return upb_handlers_freeze(&h, 1, s); +} +inline bool Handlers::Freeze(Handlers *const *handlers, int n, Status *s) { + return upb_handlers_freeze(handlers, n, s); +} +inline bool Handlers::Freeze(const std::vector<Handlers*>& h, Status* status) { + return upb_handlers_freeze((Handlers* const*)&h[0], h.size(), status); +} +inline const MessageDef *Handlers::message_def() const { + return upb_handlers_msgdef(this); +} +inline bool Handlers::AddCleanup(void *p, upb_handlerfree *func) { + return upb_handlers_addcleanup(this, p, func); +} +inline bool Handlers::SetStartMessageHandler( + const Handlers::StartMessageHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setstartmsg(this, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetEndMessageHandler( + const Handlers::EndMessageHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setendmsg(this, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetStartStringHandler(const FieldDef *f, + const StartStringHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setstartstr(this, f, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetEndStringHandler(const FieldDef *f, + const EndFieldHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setendstr(this, f, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetStringHandler(const FieldDef *f, + const StringHandler& handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setstring(this, f, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetStartSequenceHandler( + const FieldDef *f, const StartFieldHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setstartseq(this, f, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetStartSubMessageHandler( + const FieldDef *f, const StartFieldHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setstartsubmsg(this, f, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetEndSubMessageHandler(const FieldDef *f, + const EndFieldHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setendsubmsg(this, f, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetEndSequenceHandler(const FieldDef *f, + const EndFieldHandler &handler) { + assert(!handler.registered_); + handler.registered_ = true; + handler.AddCleanup(this); + return upb_handlers_setendseq(this, f, handler.handler_, &handler.attr_); +} +inline bool Handlers::SetSubHandlers(const FieldDef *f, const Handlers *sub) { + return upb_handlers_setsubhandlers(this, f, sub); +} +inline const Handlers *Handlers::GetSubHandlers(const FieldDef *f) const { + return upb_handlers_getsubhandlers(this, f); +} +inline const Handlers *Handlers::GetSubHandlers(Handlers::Selector sel) const { + return upb_handlers_getsubhandlers_sel(this, sel); +} +inline bool Handlers::GetSelector(const FieldDef *f, Handlers::Type type, + Handlers::Selector *s) { + return upb_handlers_getselector(f, type, s); +} +inline Handlers::Selector Handlers::GetEndSelector(Handlers::Selector start) { + return upb_handlers_getendselector(start); +} +inline Handlers::GenericFunction *Handlers::GetHandler( + Handlers::Selector selector) { + return upb_handlers_gethandler(this, selector); +} +inline const void *Handlers::GetHandlerData(Handlers::Selector selector) { + return upb_handlers_gethandlerdata(this, selector); +} + +inline BytesHandler::BytesHandler() { + upb_byteshandler_init(this); +} + +inline BytesHandler::~BytesHandler() { + upb_byteshandler_uninit(this); +} + +} // namespace upb + +#endif // __cplusplus + + +#undef UPB_TWO_32BIT_TYPES +#undef UPB_TWO_64BIT_TYPES +#undef UPB_INT32_T +#undef UPB_UINT32_T +#undef UPB_INT32ALT_T +#undef UPB_UINT32ALT_T +#undef UPB_INT64_T +#undef UPB_UINT64_T +#undef UPB_INT64ALT_T +#undef UPB_UINT64ALT_T + +#endif // UPB_HANDLERS_INL_H_ + +#endif // UPB_HANDLERS_H +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2010-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * A upb_sink is an object that binds a upb_handlers object to some runtime + * state. It is the object that can actually receive data via the upb_handlers + * interface. + * + * Unlike upb_def and upb_handlers, upb_sink is never frozen, immutable, or + * thread-safe. You can create as many of them as you want, but each one may + * only be used in a single thread at a time. + * + * If we compare with class-based OOP, a you can think of a upb_def as an + * abstract base class, a upb_handlers as a concrete derived class, and a + * upb_sink as an object (class instance). + */ + +#ifndef UPB_SINK_H +#define UPB_SINK_H + + +#ifdef __cplusplus +namespace upb { +class BufferSource; +class BytesSink; +class Sink; +} +#endif + +UPB_DECLARE_TYPE(upb::BufferSource, upb_bufsrc); +UPB_DECLARE_TYPE(upb::BytesSink, upb_bytessink); +UPB_DECLARE_TYPE(upb::Sink, upb_sink); + +// Internal-only struct for the sink. +struct upb_sinkframe { + UPB_PRIVATE_FOR_CPP + const upb_handlers *h; + void *closure; + + // For any frames besides the top, this is the END* callback that will run + // when the subframe is popped (for example, for a "sequence" frame the frame + // above it will be a UPB_HANDLER_ENDSEQ handler). But this is only + // necessary for assertion checking inside upb_sink and can be omitted if the + // sink has only one caller. + // + // TODO(haberman): have a mechanism for ensuring that a sink only has one + // caller. + upb_selector_t selector; +}; + +// The maximum nesting depth that upb::Sink will allow. Matches proto2's limit. +// TODO: make this a runtime-settable property of Sink. +#define UPB_SINK_MAX_NESTING 64 + +// A upb::Sink is an object that binds a upb::Handlers object to some runtime +// state. It represents an endpoint to which data can be sent. +// +// TODO(haberman): right now all of these functions take selectors. Should they +// take selectorbase instead? +// +// ie. instead of calling: +// sink->StartString(FOO_FIELD_START_STRING, ...) +// a selector base would let you say: +// sink->StartString(FOO_FIELD, ...) +// +// This would make call sites a little nicer and require emitting fewer selector +// definitions in .h files. +// +// But the current scheme has the benefit that you can retrieve a function +// pointer for any handler with handlers->GetHandler(selector), without having +// to have a separate GetHandler() function for each handler type. The JIT +// compiler uses this. To accommodate we'd have to expose a separate +// GetHandler() for every handler type. +// +// Also to ponder: selectors right now are independent of a specific Handlers +// instance. In other words, they allocate a number to every possible handler +// that *could* be registered, without knowing anything about what handlers +// *are* registered. That means that using selectors as table offsets prohibits +// us from compacting the handler table at Freeze() time. If the table is very +// sparse, this could be wasteful. +// +// Having another selector-like thing that is specific to a Handlers instance +// would allow this compacting, but then it would be impossible to write code +// ahead-of-time that can be bound to any Handlers instance at runtime. For +// example, a .proto file parser written as straight C will not know what +// Handlers it will be bound to, so when it calls sink->StartString() what +// selector will it pass? It needs a selector like we have today, that is +// independent of any particular upb::Handlers. +// +// Is there a way then to allow Handlers table compaction? +UPB_DEFINE_CLASS0(upb::Sink, + public: + // Constructor with no initialization; must be Reset() before use. + Sink() {} + + // Constructs a new sink for the given frozen handlers and closure. + // + // TODO: once the Handlers know the expected closure type, verify that T + // matches it. + template <class T> Sink(const Handlers* handlers, T* closure); + + // Resets the value of the sink. + template <class T> void Reset(const Handlers* handlers, T* closure); + + // Returns the top-level object that is bound to this sink. + // + // TODO: once the Handlers know the expected closure type, verify that T + // matches it. + template <class T> T* GetObject() const; + + // Functions for pushing data into the sink. + // + // These return false if processing should stop (either due to error or just + // to suspend). + // + // These may not be called from within one of the same sink's handlers (in + // other words, handlers are not re-entrant). + + // Should be called at the start and end of every message; both the top-level + // message and submessages. This means that submessages should use the + // following sequence: + // sink->StartSubMessage(startsubmsg_selector); + // sink->StartMessage(); + // // ... + // sink->EndMessage(&status); + // sink->EndSubMessage(endsubmsg_selector); + bool StartMessage(); + bool EndMessage(Status* status); + + // Putting of individual values. These work for both repeated and + // non-repeated fields, but for repeated fields you must wrap them in + // calls to StartSequence()/EndSequence(). + bool PutInt32(Handlers::Selector s, int32_t val); + bool PutInt64(Handlers::Selector s, int64_t val); + bool PutUInt32(Handlers::Selector s, uint32_t val); + bool PutUInt64(Handlers::Selector s, uint64_t val); + bool PutFloat(Handlers::Selector s, float val); + bool PutDouble(Handlers::Selector s, double val); + bool PutBool(Handlers::Selector s, bool val); + + // Putting of string/bytes values. Each string can consist of zero or more + // non-contiguous buffers of data. + // + // For StartString(), the function will write a sink for the string to "sub." + // The sub-sink must be used for any/all PutStringBuffer() calls. + bool StartString(Handlers::Selector s, size_t size_hint, Sink* sub); + size_t PutStringBuffer(Handlers::Selector s, const char *buf, size_t len, + const BufferHandle *handle); + bool EndString(Handlers::Selector s); + + // For submessage fields. + // + // For StartSubMessage(), the function will write a sink for the string to + // "sub." The sub-sink must be used for any/all handlers called within the + // submessage. + bool StartSubMessage(Handlers::Selector s, Sink* sub); + bool EndSubMessage(Handlers::Selector s); + + // For repeated fields of any type, the sequence of values must be wrapped in + // these calls. + // + // For StartSequence(), the function will write a sink for the string to + // "sub." The sub-sink must be used for any/all handlers called within the + // sequence. + bool StartSequence(Handlers::Selector s, Sink* sub); + bool EndSequence(Handlers::Selector s); + + // Copy and assign specifically allowed. + // We don't even bother making these members private because so many + // functions need them and this is mainly just a dumb data container anyway. +, +UPB_DEFINE_STRUCT0(upb_sink, + const upb_handlers *handlers; + void *closure; +)); + +UPB_DEFINE_CLASS0(upb::BytesSink, + public: + BytesSink() {} + + // Constructs a new sink for the given frozen handlers and closure. + // + // TODO(haberman): once the Handlers know the expected closure type, verify + // that T matches it. + template <class T> BytesSink(const BytesHandler* handler, T* closure); + + // Resets the value of the sink. + template <class T> void Reset(const BytesHandler* handler, T* closure); + + bool Start(size_t size_hint, void **subc); + size_t PutBuffer(void *subc, const char *buf, size_t len, + const BufferHandle *handle); + bool End(); +, +UPB_DEFINE_STRUCT0(upb_bytessink, + const upb_byteshandler *handler; + void *closure; +)); + +// A class for pushing a flat buffer of data to a BytesSink. +// You can construct an instance of this to get a resumable source, +// or just call the static PutBuffer() to do a non-resumable push all in one go. +UPB_DEFINE_CLASS0(upb::BufferSource, + public: + BufferSource(); + BufferSource(const char* buf, size_t len, BytesSink* sink); + + // Returns true if the entire buffer was pushed successfully. Otherwise the + // next call to PutNext() will resume where the previous one left off. + // TODO(haberman): implement this. + bool PutNext(); + + // A static version; with this version is it not possible to resume in the + // case of failure or a partially-consumed buffer. + static bool PutBuffer(const char* buf, size_t len, BytesSink* sink); + + template <class T> static bool PutBuffer(const T& str, BytesSink* sink) { + return PutBuffer(str.c_str(), str.size(), sink); + } +, +UPB_DEFINE_STRUCT0(upb_bufsrc, +)); + +UPB_BEGIN_EXTERN_C // { + +// Inline definitions. + +UPB_INLINE void upb_bytessink_reset(upb_bytessink *s, const upb_byteshandler *h, + void *closure) { + s->handler = h; + s->closure = closure; +} + +UPB_INLINE bool upb_bytessink_start(upb_bytessink *s, size_t size_hint, + void **subc) { + *subc = s->closure; + if (!s->handler) return true; + upb_startstr_handlerfunc *start = + (upb_startstr_handlerfunc *)s->handler->table[UPB_STARTSTR_SELECTOR].func; + + if (!start) return true; + *subc = start(s->closure, upb_handlerattr_handlerdata( + &s->handler->table[UPB_STARTSTR_SELECTOR].attr), + size_hint); + return *subc != NULL; +} + +UPB_INLINE size_t upb_bytessink_putbuf(upb_bytessink *s, void *subc, + const char *buf, size_t size, + const upb_bufhandle* handle) { + if (!s->handler) return true; + upb_string_handlerfunc *putbuf = + (upb_string_handlerfunc *)s->handler->table[UPB_STRING_SELECTOR].func; + + if (!putbuf) return true; + return putbuf(subc, upb_handlerattr_handlerdata( + &s->handler->table[UPB_STRING_SELECTOR].attr), + buf, size, handle); +} + +UPB_INLINE bool upb_bytessink_end(upb_bytessink *s) { + if (!s->handler) return true; + upb_endfield_handlerfunc *end = + (upb_endfield_handlerfunc *)s->handler->table[UPB_ENDSTR_SELECTOR].func; + + if (!end) return true; + return end(s->closure, + upb_handlerattr_handlerdata( + &s->handler->table[UPB_ENDSTR_SELECTOR].attr)); +} + +UPB_INLINE bool upb_bufsrc_putbuf(const char *buf, size_t len, + upb_bytessink *sink) { + void *subc; + upb_bufhandle handle; + upb_bufhandle_init(&handle); + upb_bufhandle_setbuf(&handle, buf, 0); + bool ret = upb_bytessink_start(sink, len, &subc); + if (ret && len != 0) { + ret = (upb_bytessink_putbuf(sink, subc, buf, len, &handle) == len); + } + if (ret) { + ret = upb_bytessink_end(sink); + } + upb_bufhandle_uninit(&handle); + return ret; +} + +#define PUTVAL(type, ctype) \ + UPB_INLINE bool upb_sink_put##type(upb_sink *s, upb_selector_t sel, \ + ctype val) { \ + if (!s->handlers) return true; \ + upb_##type##_handlerfunc *func = \ + (upb_##type##_handlerfunc *)upb_handlers_gethandler(s->handlers, sel); \ + if (!func) return true; \ + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); \ + return func(s->closure, hd, val); \ + } + +PUTVAL(int32, int32_t); +PUTVAL(int64, int64_t); +PUTVAL(uint32, uint32_t); +PUTVAL(uint64, uint64_t); +PUTVAL(float, float); +PUTVAL(double, double); +PUTVAL(bool, bool); +#undef PUTVAL + +UPB_INLINE void upb_sink_reset(upb_sink *s, const upb_handlers *h, void *c) { + s->handlers = h; + s->closure = c; +} + +UPB_INLINE size_t upb_sink_putstring(upb_sink *s, upb_selector_t sel, + const char *buf, size_t n, + const upb_bufhandle *handle) { + if (!s->handlers) return n; + upb_string_handlerfunc *handler = + (upb_string_handlerfunc *)upb_handlers_gethandler(s->handlers, sel); + + if (!handler) return n; + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); + return handler(s->closure, hd, buf, n, handle); +} + +UPB_INLINE bool upb_sink_startmsg(upb_sink *s) { + if (!s->handlers) return true; + upb_startmsg_handlerfunc *startmsg = + (upb_startmsg_handlerfunc *)upb_handlers_gethandler(s->handlers, + UPB_STARTMSG_SELECTOR); + if (!startmsg) return true; + const void *hd = + upb_handlers_gethandlerdata(s->handlers, UPB_STARTMSG_SELECTOR); + return startmsg(s->closure, hd); +} + +UPB_INLINE bool upb_sink_endmsg(upb_sink *s, upb_status *status) { + if (!s->handlers) return true; + upb_endmsg_handlerfunc *endmsg = + (upb_endmsg_handlerfunc *)upb_handlers_gethandler(s->handlers, + UPB_ENDMSG_SELECTOR); + + if (!endmsg) return true; + const void *hd = + upb_handlers_gethandlerdata(s->handlers, UPB_ENDMSG_SELECTOR); + return endmsg(s->closure, hd, status); +} + +UPB_INLINE bool upb_sink_startseq(upb_sink *s, upb_selector_t sel, + upb_sink *sub) { + sub->closure = s->closure; + sub->handlers = s->handlers; + if (!s->handlers) return true; + upb_startfield_handlerfunc *startseq = + (upb_startfield_handlerfunc*)upb_handlers_gethandler(s->handlers, sel); + + if (!startseq) return true; + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); + sub->closure = startseq(s->closure, hd); + return sub->closure ? true : false; +} + +UPB_INLINE bool upb_sink_endseq(upb_sink *s, upb_selector_t sel) { + if (!s->handlers) return true; + upb_endfield_handlerfunc *endseq = + (upb_endfield_handlerfunc*)upb_handlers_gethandler(s->handlers, sel); + + if (!endseq) return true; + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); + return endseq(s->closure, hd); +} + +UPB_INLINE bool upb_sink_startstr(upb_sink *s, upb_selector_t sel, + size_t size_hint, upb_sink *sub) { + sub->closure = s->closure; + sub->handlers = s->handlers; + if (!s->handlers) return true; + upb_startstr_handlerfunc *startstr = + (upb_startstr_handlerfunc*)upb_handlers_gethandler(s->handlers, sel); + + if (!startstr) return true; + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); + sub->closure = startstr(s->closure, hd, size_hint); + return sub->closure ? true : false; +} + +UPB_INLINE bool upb_sink_endstr(upb_sink *s, upb_selector_t sel) { + if (!s->handlers) return true; + upb_endfield_handlerfunc *endstr = + (upb_endfield_handlerfunc*)upb_handlers_gethandler(s->handlers, sel); + + if (!endstr) return true; + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); + return endstr(s->closure, hd); +} + +UPB_INLINE bool upb_sink_startsubmsg(upb_sink *s, upb_selector_t sel, + upb_sink *sub) { + sub->closure = s->closure; + if (!s->handlers) { + sub->handlers = NULL; + return true; + } + sub->handlers = upb_handlers_getsubhandlers_sel(s->handlers, sel); + upb_startfield_handlerfunc *startsubmsg = + (upb_startfield_handlerfunc*)upb_handlers_gethandler(s->handlers, sel); + + if (!startsubmsg) return true; + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); + sub->closure = startsubmsg(s->closure, hd); + return sub->closure ? true : false; +} + +UPB_INLINE bool upb_sink_endsubmsg(upb_sink *s, upb_selector_t sel) { + if (!s->handlers) return true; + upb_endfield_handlerfunc *endsubmsg = + (upb_endfield_handlerfunc*)upb_handlers_gethandler(s->handlers, sel); + + if (!endsubmsg) return s->closure; + const void *hd = upb_handlers_gethandlerdata(s->handlers, sel); + return endsubmsg(s->closure, hd); +} + +UPB_END_EXTERN_C // } + +#ifdef __cplusplus + +namespace upb { + +template <class T> Sink::Sink(const Handlers* handlers, T* closure) { + upb_sink_reset(this, handlers, closure); +} +template <class T> +inline void Sink::Reset(const Handlers* handlers, T* closure) { + upb_sink_reset(this, handlers, closure); +} +inline bool Sink::StartMessage() { + return upb_sink_startmsg(this); +} +inline bool Sink::EndMessage(Status* status) { + return upb_sink_endmsg(this, status); +} +inline bool Sink::PutInt32(Handlers::Selector sel, int32_t val) { + return upb_sink_putint32(this, sel, val); +} +inline bool Sink::PutInt64(Handlers::Selector sel, int64_t val) { + return upb_sink_putint64(this, sel, val); +} +inline bool Sink::PutUInt32(Handlers::Selector sel, uint32_t val) { + return upb_sink_putuint32(this, sel, val); +} +inline bool Sink::PutUInt64(Handlers::Selector sel, uint64_t val) { + return upb_sink_putuint64(this, sel, val); +} +inline bool Sink::PutFloat(Handlers::Selector sel, float val) { + return upb_sink_putfloat(this, sel, val); +} +inline bool Sink::PutDouble(Handlers::Selector sel, double val) { + return upb_sink_putdouble(this, sel, val); +} +inline bool Sink::PutBool(Handlers::Selector sel, bool val) { + return upb_sink_putbool(this, sel, val); +} +inline bool Sink::StartString(Handlers::Selector sel, size_t size_hint, + Sink *sub) { + return upb_sink_startstr(this, sel, size_hint, sub); +} +inline size_t Sink::PutStringBuffer(Handlers::Selector sel, const char *buf, + size_t len, const BufferHandle* handle) { + return upb_sink_putstring(this, sel, buf, len, handle); +} +inline bool Sink::EndString(Handlers::Selector sel) { + return upb_sink_endstr(this, sel); +} +inline bool Sink::StartSubMessage(Handlers::Selector sel, Sink* sub) { + return upb_sink_startsubmsg(this, sel, sub); +} +inline bool Sink::EndSubMessage(Handlers::Selector sel) { + return upb_sink_endsubmsg(this, sel); +} +inline bool Sink::StartSequence(Handlers::Selector sel, Sink* sub) { + return upb_sink_startseq(this, sel, sub); +} +inline bool Sink::EndSequence(Handlers::Selector sel) { + return upb_sink_endseq(this, sel); +} + +template <class T> +BytesSink::BytesSink(const BytesHandler* handler, T* closure) { + Reset(handler, closure); +} + +template <class T> +void BytesSink::Reset(const BytesHandler *handler, T *closure) { + upb_bytessink_reset(this, handler, closure); +} +inline bool BytesSink::Start(size_t size_hint, void **subc) { + return upb_bytessink_start(this, size_hint, subc); +} +inline size_t BytesSink::PutBuffer(void *subc, const char *buf, size_t len, + const BufferHandle *handle) { + return upb_bytessink_putbuf(this, subc, buf, len, handle); +} +inline bool BytesSink::End() { + return upb_bytessink_end(this); +} + +inline bool BufferSource::PutBuffer(const char *buf, size_t len, + BytesSink *sink) { + return upb_bufsrc_putbuf(buf, len, sink); +} + +} // namespace upb +#endif + +#endif +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2013 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * For handlers that do very tiny, very simple operations, the function call + * overhead of calling a handler can be significant. This file allows the + * user to define handlers that do something very simple like store the value + * to memory and/or set a hasbit. JIT compilers can then special-case these + * handlers and emit specialized code for them instead of actually calling the + * handler. + * + * The functionality is very simple/limited right now but may expand to be able + * to call another function. + */ + +#ifndef UPB_SHIM_H +#define UPB_SHIM_H + + +typedef struct { + size_t offset; + int32_t hasbit; +} upb_shim_data; + +#ifdef __cplusplus + +namespace upb { + +struct Shim { + typedef upb_shim_data Data; + + // Sets a handler for the given field that writes the value to the given + // offset and, if hasbit >= 0, sets a bit at the given bit offset. Returns + // true if the handler was set successfully. + static bool Set(Handlers *h, const FieldDef *f, size_t ofs, int32_t hasbit); + + // If this handler is a shim, returns the corresponding upb::Shim::Data and + // stores the type in "type". Otherwise returns NULL. + static const Data* GetData(const Handlers* h, Handlers::Selector s, + FieldDef::Type* type); +}; + +} // namespace upb + +#endif + +UPB_BEGIN_EXTERN_C // { + +// C API. +bool upb_shim_set(upb_handlers *h, const upb_fielddef *f, size_t offset, + int32_t hasbit); +const upb_shim_data *upb_shim_getdata(const upb_handlers *h, upb_selector_t s, + upb_fieldtype_t *type); + +UPB_END_EXTERN_C // } + +#ifdef __cplusplus +// C++ Wrappers. +namespace upb { +inline bool Shim::Set(Handlers* h, const FieldDef* f, size_t ofs, + int32_t hasbit) { + return upb_shim_set(h, f, ofs, hasbit); +} +inline const Shim::Data* Shim::GetData(const Handlers* h, Handlers::Selector s, + FieldDef::Type* type) { + return upb_shim_getdata(h, s, type); +} +} // namespace upb +#endif + +#endif // UPB_SHIM_H +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2011 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * upb::descriptor::Reader provides a way of building upb::Defs from + * data in descriptor.proto format. + */ + +#ifndef UPB_DESCRIPTOR_H +#define UPB_DESCRIPTOR_H + + +#ifdef __cplusplus +namespace upb { +namespace descriptor { +class Reader; +} // namespace descriptor +} // namespace upb +#endif + +UPB_DECLARE_TYPE(upb::descriptor::Reader, upb_descreader); + +// Internal-only structs used by Reader. + +// upb_deflist is an internal-only dynamic array for storing a growing list of +// upb_defs. +typedef struct { + UPB_PRIVATE_FOR_CPP + upb_def **defs; + size_t len; + size_t size; + bool owned; +} upb_deflist; + +// We keep a stack of all the messages scopes we are currently in, as well as +// the top-level file scope. This is necessary to correctly qualify the +// definitions that are contained inside. "name" tracks the name of the +// message or package (a bare name -- not qualified by any enclosing scopes). +typedef struct { + UPB_PRIVATE_FOR_CPP + char *name; + // Index of the first def that is under this scope. For msgdefs, the + // msgdef itself is at start-1. + int start; +} upb_descreader_frame; + +// The maximum number of nested declarations that are allowed, ie. +// message Foo { +// message Bar { +// message Baz { +// } +// } +// } +// +// This is a resource limit that affects how big our runtime stack can grow. +// TODO: make this a runtime-settable property of the Reader instance. +#define UPB_MAX_MESSAGE_NESTING 64 + +// Class that receives descriptor data according to the descriptor.proto schema +// and use it to build upb::Defs corresponding to that schema. +UPB_DEFINE_CLASS0(upb::descriptor::Reader, + public: + // These handlers must have come from NewHandlers() and must outlive the + // Reader. + // + // TODO: generate the handlers statically (like we do with the + // descriptor.proto defs) so that there is no need to pass this parameter (or + // to build/memory-manage the handlers at runtime at all). Unfortunately this + // is a bit tricky to implement for Handlers, but necessary to simplify this + // interface. + Reader(const Handlers* handlers, Status* status); + ~Reader(); + + // Resets the reader's state and discards any defs it may have built. + void Reset(); + + // The reader's input; this is where descriptor.proto data should be sent. + Sink* input(); + + // Returns an array of all defs that have been parsed, and transfers ownership + // of them to "owner". The number of defs is stored in *n. Ownership of the + // returned array is retained and is invalidated by any other call into + // Reader. + // + // These defs are not frozen or resolved; they are ready to be added to a + // symtab. + upb::Def** GetDefs(void* owner, int* n); + + // Builds and returns handlers for the reader, owned by "owner." + static Handlers* NewHandlers(const void* owner); +, +UPB_DEFINE_STRUCT0(upb_descreader, + upb_sink sink; + upb_deflist defs; + upb_descreader_frame stack[UPB_MAX_MESSAGE_NESTING]; + int stack_len; + + uint32_t number; + char *name; + bool saw_number; + bool saw_name; + + char *default_string; + + upb_fielddef *f; +)); + +UPB_BEGIN_EXTERN_C // { + +// C API. +void upb_descreader_init(upb_descreader *r, const upb_handlers *handlers, + upb_status *status); +void upb_descreader_uninit(upb_descreader *r); +void upb_descreader_reset(upb_descreader *r); +upb_sink *upb_descreader_input(upb_descreader *r); +upb_def **upb_descreader_getdefs(upb_descreader *r, void *owner, int *n); +const upb_handlers *upb_descreader_newhandlers(const void *owner); + +UPB_END_EXTERN_C // } + +#ifdef __cplusplus +// C++ implementation details. ///////////////////////////////////////////////// +namespace upb { +namespace descriptor { +inline Reader::Reader(const Handlers *h, Status *s) { + upb_descreader_init(this, h, s); +} +inline Reader::~Reader() { upb_descreader_uninit(this); } +inline void Reader::Reset() { upb_descreader_reset(this); } +inline Sink* Reader::input() { return upb_descreader_input(this); } +inline upb::Def** Reader::GetDefs(void* owner, int* n) { + return upb_descreader_getdefs(this, owner, n); +} +} // namespace descriptor +} // namespace upb +#endif + +#endif // UPB_DESCRIPTOR_H +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009-2014 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Internal-only definitions for the decoder. + */ + +#ifndef UPB_DECODER_INT_H_ +#define UPB_DECODER_INT_H_ + +#include <stdlib.h> +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009-2014 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * upb::pb::Decoder implements a high performance, streaming, resumable decoder + * for the binary protobuf format. + * + * This interface works the same regardless of what decoder backend is being + * used. A client of this class does not need to know whether decoding is using + * a JITted decoder (DynASM, LLVM, etc) or an interpreted decoder. By default, + * it will always use the fastest available decoder. However, you can call + * set_allow_jit(false) to disable any JIT decoder that might be available. + * This is primarily useful for testing purposes. + */ + +#ifndef UPB_DECODER_H_ +#define UPB_DECODER_H_ + + +#ifdef __cplusplus +namespace upb { +namespace pb { +class CodeCache; +class Decoder; +class DecoderMethod; +class DecoderMethodOptions; +} // namespace pb +} // namespace upb +#endif + +UPB_DECLARE_TYPE(upb::pb::CodeCache, upb_pbcodecache); +UPB_DECLARE_TYPE(upb::pb::Decoder, upb_pbdecoder); +UPB_DECLARE_TYPE(upb::pb::DecoderMethod, upb_pbdecodermethod); +UPB_DECLARE_TYPE(upb::pb::DecoderMethodOptions, upb_pbdecodermethodopts); + +// The maximum that any submessages can be nested. Matches proto2's limit. +// This specifies the size of the decoder's statically-sized array and therefore +// setting it high will cause the upb::pb::Decoder object to be larger. +// +// If necessary we can add a runtime-settable property to Decoder that allow +// this to be larger than the compile-time setting, but this would add +// complexity, particularly since we would have to decide how/if to give users +// the ability to set a custom memory allocation function. +#define UPB_DECODER_MAX_NESTING 64 + +// Internal-only struct used by the decoder. +typedef struct { + UPB_PRIVATE_FOR_CPP + // Space optimization note: we store two pointers here that the JIT + // doesn't need at all; the upb_handlers* inside the sink and + // the dispatch table pointer. We can optimze so that the JIT uses + // smaller stack frames than the interpreter. The only thing we need + // to guarantee is that the fallback routines can find end_ofs. + upb_sink sink; + + // The absolute stream offset of the end-of-frame delimiter. + // Non-delimited frames (groups and non-packed repeated fields) reuse the + // delimiter of their parent, even though the frame may not end there. + // + // NOTE: the JIT stores a slightly different value here for non-top frames. + // It stores the value relative to the end of the enclosed message. But the + // top frame is still stored the same way, which is important for ensuring + // that calls from the JIT into C work correctly. + uint64_t end_ofs; + const uint32_t *base; + + // 0 indicates a length-delimited field. + // A positive number indicates a known group. + // A negative number indicates an unknown group. + int32_t groupnum; + upb_inttable *dispatch; // Not used by the JIT. +} upb_pbdecoder_frame; + +// The parameters one uses to construct a DecoderMethod. +// TODO(haberman): move allowjit here? Seems more convenient for users. +UPB_DEFINE_CLASS0(upb::pb::DecoderMethodOptions, + public: + // Parameter represents the destination handlers that this method will push + // to. + explicit DecoderMethodOptions(const Handlers* dest_handlers); + + // Should the decoder push submessages to lazy handlers for fields that have + // them? The caller should set this iff the lazy handlers expect data that is + // in protobuf binary format and the caller wishes to lazy parse it. + void set_lazy(bool lazy); +, +UPB_DEFINE_STRUCT0(upb_pbdecodermethodopts, + const upb_handlers *handlers; + bool lazy; +)); + +// Represents the code to parse a protobuf according to a destination Handlers. +UPB_DEFINE_CLASS1(upb::pb::DecoderMethod, upb::RefCounted, + public: + // From upb::ReferenceCounted. + void Ref(const void* owner) const; + void Unref(const void* owner) const; + void DonateRef(const void* from, const void* to) const; + void CheckRef(const void* owner) const; + + // The destination handlers that are statically bound to this method. + // This method is only capable of outputting to a sink that uses these + // handlers. + const Handlers* dest_handlers() const; + + // The input handlers for this decoder method. + const BytesHandler* input_handler() const; + + // Whether this method is native. + bool is_native() const; + + // Convenience method for generating a DecoderMethod without explicitly + // creating a CodeCache. + static reffed_ptr<const DecoderMethod> New(const DecoderMethodOptions& opts); + + private: + UPB_DISALLOW_POD_OPS(DecoderMethod, upb::pb::DecoderMethod); +, +UPB_DEFINE_STRUCT(upb_pbdecodermethod, upb_refcounted, + // While compiling, the base is relative in "ofs", after compiling it is + // absolute in "ptr". + union { + uint32_t ofs; // PC offset of method. + void *ptr; // Pointer to bytecode or machine code for this method. + } code_base; + + // The decoder method group to which this method belongs. We own a ref. + // Owning a ref on the entire group is more coarse-grained than is strictly + // necessary; all we truly require is that methods we directly reference + // outlive us, while the group could contain many other messages we don't + // require. But the group represents the messages that were + // allocated+compiled together, so it makes the most sense to free them + // together also. + const upb_refcounted *group; + + // Whether this method is native code or bytecode. + bool is_native_; + + // The handler one calls to invoke this method. + upb_byteshandler input_handler_; + + // The destination handlers this method is bound to. We own a ref. + const upb_handlers *dest_handlers_; + + // Dispatch table -- used by both bytecode decoder and JIT when encountering a + // field number that wasn't the one we were expecting to see. See + // decoder.int.h for the layout of this table. + upb_inttable dispatch; +)); + +// A Decoder receives binary protobuf data on its input sink and pushes the +// decoded data to its output sink. +UPB_DEFINE_CLASS0(upb::pb::Decoder, + public: + // Constructs a decoder instance for the given method, which must outlive this + // decoder. Any errors during parsing will be set on the given status, which + // must also outlive this decoder. + Decoder(const DecoderMethod* method, Status* status); + ~Decoder(); + + // Returns the DecoderMethod this decoder is parsing from. + // TODO(haberman): Do users need to be able to rebind this? + const DecoderMethod* method() const; + + // Resets the state of the decoder. + void Reset(); + + // Returns number of bytes successfully parsed. + // + // This can be useful for determining the stream position where an error + // occurred. + // + // This value may not be up-to-date when called from inside a parsing + // callback. + uint64_t BytesParsed() const; + + // Resets the output sink of the Decoder. + // The given sink must match method()->dest_handlers(). + // + // This must be called at least once before the decoder can be used. It may + // only be called with the decoder is in a state where it was just created or + // reset with pipeline.Reset(). The given sink must be from the same pipeline + // as this decoder. + bool ResetOutput(Sink* sink); + + // The sink on which this decoder receives input. + BytesSink* input(); + + private: + UPB_DISALLOW_COPY_AND_ASSIGN(Decoder); +, +UPB_DEFINE_STRUCT0(upb_pbdecoder, UPB_QUOTE( + // Our input sink. + upb_bytessink input_; + + // The decoder method we are parsing with (owned). + const upb_pbdecodermethod *method_; + + size_t call_len; + const uint32_t *pc, *last; + + // Current input buffer and its stream offset. + const char *buf, *ptr, *end, *checkpoint; + + // End of the delimited region, relative to ptr, or NULL if not in this buf. + const char *delim_end; + + // End of the delimited region, relative to ptr, or end if not in this buf. + const char *data_end; + + // Overall stream offset of "buf." + uint64_t bufstart_ofs; + + // Buffer for residual bytes not parsed from the previous buffer. + // The maximum number of residual bytes we require is 12; a five-byte + // unknown tag plus an eight-byte value, less one because the value + // is only a partial value. + char residual[12]; + char *residual_end; + + // Stores the user buffer passed to our decode function. + const char *buf_param; + size_t size_param; + const upb_bufhandle *handle; + +#ifdef UPB_USE_JIT_X64 + // Used momentarily by the generated code to store a value while a user + // function is called. + uint32_t tmp_len; + + const void *saved_rsp; +#endif + + upb_status *status; + + // Our internal stack. + upb_pbdecoder_frame *top, *limit; + upb_pbdecoder_frame stack[UPB_DECODER_MAX_NESTING]; +#ifdef UPB_USE_JIT_X64 + // Each native stack frame needs two pointers, plus we need a few frames for + // the enter/exit trampolines. + const uint32_t *callstack[(UPB_DECODER_MAX_NESTING * 2) + 10]; +#else + const uint32_t *callstack[UPB_DECODER_MAX_NESTING]; +#endif +))); + +// A class for caching protobuf processing code, whether bytecode for the +// interpreted decoder or machine code for the JIT. +// +// This class is not thread-safe. +UPB_DEFINE_CLASS0(upb::pb::CodeCache, + public: + CodeCache(); + ~CodeCache(); + + // Whether the cache is allowed to generate machine code. Defaults to true. + // There is no real reason to turn it off except for testing or if you are + // having a specific problem with the JIT. + // + // Note that allow_jit = true does not *guarantee* that the code will be JIT + // compiled. If this platform is not supported or the JIT was not compiled + // in, the code may still be interpreted. + bool allow_jit() const; + + // This may only be called when the object is first constructed, and prior to + // any code generation, otherwise returns false and does nothing. + bool set_allow_jit(bool allow); + + // Returns a DecoderMethod that can push data to the given handlers. + // If a suitable method already exists, it will be returned from the cache. + // + // Specifying the destination handlers here allows the DecoderMethod to be + // statically bound to the destination handlers if possible, which can allow + // more efficient decoding. However the returned method may or may not + // actually be statically bound. But in all cases, the returned method can + // push data to the given handlers. + const DecoderMethod *GetDecoderMethod(const DecoderMethodOptions& opts); + + // If/when someone needs to explicitly create a dynamically-bound + // DecoderMethod*, we can add a method to get it here. + + private: + UPB_DISALLOW_COPY_AND_ASSIGN(CodeCache); +, +UPB_DEFINE_STRUCT0(upb_pbcodecache, + bool allow_jit_; + + // Array of mgroups. + upb_inttable groups; +)); + +UPB_BEGIN_EXTERN_C // { + +void upb_pbdecoder_init(upb_pbdecoder *d, const upb_pbdecodermethod *method, + upb_status *status); +void upb_pbdecoder_uninit(upb_pbdecoder *d); +void upb_pbdecoder_reset(upb_pbdecoder *d); +const upb_pbdecodermethod *upb_pbdecoder_method(const upb_pbdecoder *d); +bool upb_pbdecoder_resetoutput(upb_pbdecoder *d, upb_sink *sink); +upb_bytessink *upb_pbdecoder_input(upb_pbdecoder *d); +uint64_t upb_pbdecoder_bytesparsed(const upb_pbdecoder *d); + +void upb_pbdecodermethodopts_init(upb_pbdecodermethodopts *opts, + const upb_handlers *h); +void upb_pbdecodermethodopts_setlazy(upb_pbdecodermethodopts *opts, bool lazy); + +void upb_pbdecodermethod_ref(const upb_pbdecodermethod *m, const void *owner); +void upb_pbdecodermethod_unref(const upb_pbdecodermethod *m, const void *owner); +void upb_pbdecodermethod_donateref(const upb_pbdecodermethod *m, + const void *from, const void *to); +void upb_pbdecodermethod_checkref(const upb_pbdecodermethod *m, + const void *owner); +const upb_handlers *upb_pbdecodermethod_desthandlers( + const upb_pbdecodermethod *m); +const upb_byteshandler *upb_pbdecodermethod_inputhandler( + const upb_pbdecodermethod *m); +bool upb_pbdecodermethod_isnative(const upb_pbdecodermethod *m); +const upb_pbdecodermethod *upb_pbdecodermethod_new( + const upb_pbdecodermethodopts *opts, const void *owner); + +void upb_pbcodecache_init(upb_pbcodecache *c); +void upb_pbcodecache_uninit(upb_pbcodecache *c); +bool upb_pbcodecache_allowjit(const upb_pbcodecache *c); +bool upb_pbcodecache_setallowjit(upb_pbcodecache *c, bool allow); +const upb_pbdecodermethod *upb_pbcodecache_getdecodermethod( + upb_pbcodecache *c, const upb_pbdecodermethodopts *opts); + +UPB_END_EXTERN_C // } + +#ifdef __cplusplus + +namespace upb { + +namespace pb { + +inline Decoder::Decoder(const DecoderMethod* m, Status* s) { + upb_pbdecoder_init(this, m, s); +} +inline Decoder::~Decoder() { + upb_pbdecoder_uninit(this); +} +inline const DecoderMethod* Decoder::method() const { + return upb_pbdecoder_method(this); +} +inline void Decoder::Reset() { + upb_pbdecoder_reset(this); +} +inline uint64_t Decoder::BytesParsed() const { + return upb_pbdecoder_bytesparsed(this); +} +inline bool Decoder::ResetOutput(Sink* sink) { + return upb_pbdecoder_resetoutput(this, sink); +} +inline BytesSink* Decoder::input() { + return upb_pbdecoder_input(this); +} + +inline DecoderMethodOptions::DecoderMethodOptions(const Handlers* h) { + upb_pbdecodermethodopts_init(this, h); +} +inline void DecoderMethodOptions::set_lazy(bool lazy) { + upb_pbdecodermethodopts_setlazy(this, lazy); +} + +inline void DecoderMethod::Ref(const void *owner) const { + upb_pbdecodermethod_ref(this, owner); +} +inline void DecoderMethod::Unref(const void *owner) const { + upb_pbdecodermethod_unref(this, owner); +} +inline void DecoderMethod::DonateRef(const void *from, const void *to) const { + upb_pbdecodermethod_donateref(this, from, to); +} +inline void DecoderMethod::CheckRef(const void *owner) const { + upb_pbdecodermethod_checkref(this, owner); +} +inline const Handlers* DecoderMethod::dest_handlers() const { + return upb_pbdecodermethod_desthandlers(this); +} +inline const BytesHandler* DecoderMethod::input_handler() const { + return upb_pbdecodermethod_inputhandler(this); +} +inline bool DecoderMethod::is_native() const { + return upb_pbdecodermethod_isnative(this); +} +// static +inline reffed_ptr<const DecoderMethod> DecoderMethod::New( + const DecoderMethodOptions &opts) { + const upb_pbdecodermethod *m = upb_pbdecodermethod_new(&opts, &m); + return reffed_ptr<const DecoderMethod>(m, &m); +} + +inline CodeCache::CodeCache() { + upb_pbcodecache_init(this); +} +inline CodeCache::~CodeCache() { + upb_pbcodecache_uninit(this); +} +inline bool CodeCache::allow_jit() const { + return upb_pbcodecache_allowjit(this); +} +inline bool CodeCache::set_allow_jit(bool allow) { + return upb_pbcodecache_setallowjit(this, allow); +} +inline const DecoderMethod *CodeCache::GetDecoderMethod( + const DecoderMethodOptions& opts) { + return upb_pbcodecache_getdecodermethod(this, &opts); +} + +} // namespace pb +} // namespace upb + +#endif // __cplusplus + +#endif /* UPB_DECODER_H_ */ + +// Opcode definitions. The canonical meaning of each opcode is its +// implementation in the interpreter (the JIT is written to match this). +// +// All instructions have the opcode in the low byte. +// Instruction format for most instructions is: +// +// +-------------------+--------+ +// | arg (24) | op (8) | +// +-------------------+--------+ +// +// Exceptions are indicated below. A few opcodes are multi-word. +typedef enum { + // Opcodes 1-8, 13, 15-18 parse their respective descriptor types. + // Arg for all of these is the upb selector for this field. +#define T(type) OP_PARSE_ ## type = UPB_DESCRIPTOR_TYPE_ ## type + T(DOUBLE), T(FLOAT), T(INT64), T(UINT64), T(INT32), T(FIXED64), T(FIXED32), + T(BOOL), T(UINT32), T(SFIXED32), T(SFIXED64), T(SINT32), T(SINT64), +#undef T + OP_STARTMSG = 9, // No arg. + OP_ENDMSG = 10, // No arg. + OP_STARTSEQ = 11, + OP_ENDSEQ = 12, + OP_STARTSUBMSG = 14, + OP_ENDSUBMSG = 19, + OP_STARTSTR = 20, + OP_STRING = 21, + OP_ENDSTR = 22, + + OP_PUSHTAGDELIM = 23, // No arg. + OP_PUSHLENDELIM = 24, // No arg. + OP_POP = 25, // No arg. + OP_SETDELIM = 26, // No arg. + OP_SETBIGGROUPNUM = 27, // two words: | unused (24) | opc || groupnum (32) | + OP_CHECKDELIM = 28, + OP_CALL = 29, + OP_RET = 30, + OP_BRANCH = 31, + + // Different opcodes depending on how many bytes expected. + OP_TAG1 = 32, // | expected tag (16) | jump target (8) | opc (8) | + OP_TAG2 = 33, // | expected tag (16) | jump target (8) | opc (8) | + OP_TAGN = 34, // three words: + // | unused (16) | jump target(8) | opc (8) | + // | expected tag 1 (32) | + // | expected tag 2 (32) | + + OP_SETDISPATCH = 35, // N words: + // | unused (24) | opc | + // | upb_inttable* (32 or 64) | + + OP_HALT = 36, // No arg. +} opcode; + +#define OP_MAX OP_HALT + +UPB_INLINE opcode getop(uint32_t instr) { return instr & 0xff; } + +// Method group; represents a set of decoder methods that had their code +// emitted together, and must therefore be freed together. Immutable once +// created. It is possible we may want to expose this to users at some point. +// +// Overall ownership of Decoder objects looks like this: +// +// +----------+ +// | | <---> DecoderMethod +// | method | +// CodeCache ---> | group | <---> DecoderMethod +// | | +// | (mgroup) | <---> DecoderMethod +// +----------+ +typedef struct { + upb_refcounted base; + + // Maps upb_msgdef/upb_handlers -> upb_pbdecodermethod. We own refs on the + // methods. + upb_inttable methods; + + // When we add the ability to link to previously existing mgroups, we'll + // need an array of mgroups we reference here, and own refs on them. + + // The bytecode for our methods, if any exists. Owned by us. + uint32_t *bytecode; + uint32_t *bytecode_end; + +#ifdef UPB_USE_JIT_X64 + // JIT-generated machine code, if any. + upb_string_handlerfunc *jit_code; + // The size of the jit_code (required to munmap()). + size_t jit_size; + char *debug_info; + void *dl; +#endif +} mgroup; + +// Decoder entry points; used as handlers. +void *upb_pbdecoder_startbc(void *closure, const void *pc, size_t size_hint); +void *upb_pbdecoder_startjit(void *closure, const void *hd, size_t size_hint); +size_t upb_pbdecoder_decode(void *closure, const void *hd, const char *buf, + size_t size, const upb_bufhandle *handle); +bool upb_pbdecoder_end(void *closure, const void *handler_data); + +// Decoder-internal functions that the JIT calls to handle fallback paths. +int32_t upb_pbdecoder_resume(upb_pbdecoder *d, void *p, const char *buf, + size_t size, const upb_bufhandle *handle); +size_t upb_pbdecoder_suspend(upb_pbdecoder *d); +int32_t upb_pbdecoder_skipunknown(upb_pbdecoder *d, int32_t fieldnum, + uint8_t wire_type); +int32_t upb_pbdecoder_checktag_slow(upb_pbdecoder *d, uint64_t expected); +int32_t upb_pbdecoder_decode_varint_slow(upb_pbdecoder *d, uint64_t *u64); +int32_t upb_pbdecoder_decode_f32(upb_pbdecoder *d, uint32_t *u32); +int32_t upb_pbdecoder_decode_f64(upb_pbdecoder *d, uint64_t *u64); +void upb_pbdecoder_seterr(upb_pbdecoder *d, const char *msg); + +// Error messages that are shared between the bytecode and JIT decoders. +extern const char *kPbDecoderStackOverflow; + +// Access to decoderplan members needed by the decoder. +const char *upb_pbdecoder_getopname(unsigned int op); + +// JIT codegen entry point. +void upb_pbdecoder_jit(mgroup *group); +void upb_pbdecoder_freejit(mgroup *group); + +// A special label that means "do field dispatch for this message and branch to +// wherever that takes you." +#define LABEL_DISPATCH 0 + +// A special slot in the dispatch table that stores the epilogue (ENDMSG and/or +// RET) for branching to when we find an appropriate ENDGROUP tag. +#define DISPATCH_ENDMSG 0 + +// It's important to use this invalid wire type instead of 0 (which is a valid +// wire type). +#define NO_WIRE_TYPE 0xff + +// The dispatch table layout is: +// [field number] -> [ 48-bit offset ][ 8-bit wt2 ][ 8-bit wt1 ] +// +// If wt1 matches, jump to the 48-bit offset. If wt2 matches, lookup +// (UPB_MAX_FIELDNUMBER + fieldnum) and jump there. +// +// We need two wire types because of packed/non-packed compatibility. A +// primitive repeated field can use either wire type and be valid. While we +// could key the table on fieldnum+wiretype, the table would be 8x sparser. +// +// Storing two wire types in the primary value allows us to quickly rule out +// the second wire type without needing to do a separate lookup (this case is +// less common than an unknown field). +UPB_INLINE uint64_t upb_pbdecoder_packdispatch(uint64_t ofs, uint8_t wt1, + uint8_t wt2) { + return (ofs << 16) | (wt2 << 8) | wt1; +} + +UPB_INLINE void upb_pbdecoder_unpackdispatch(uint64_t dispatch, uint64_t *ofs, + uint8_t *wt1, uint8_t *wt2) { + *wt1 = (uint8_t)dispatch; + *wt2 = (uint8_t)(dispatch >> 8); + *ofs = dispatch >> 16; +} + +// All of the functions in decoder.c that return int32_t return values according +// to the following scheme: +// 1. negative values indicate a return code from the following list. +// 2. positive values indicate that error or end of buffer was hit, and +// that the decode function should immediately return the given value +// (the decoder state has already been suspended and is ready to be +// resumed). +#define DECODE_OK -1 +#define DECODE_MISMATCH -2 // Used only from checktag_slow(). +#define DECODE_ENDGROUP -3 // Used only from checkunknown(). + +#define CHECK_RETURN(x) { int32_t ret = x; if (ret >= 0) return ret; } + +#endif // UPB_DECODER_INT_H_ +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2011 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * A number of routines for varint manipulation (we keep them all around to + * have multiple approaches available for benchmarking). + */ + +#ifndef UPB_VARINT_DECODER_H_ +#define UPB_VARINT_DECODER_H_ + +#include <assert.h> +#include <stdint.h> +#include <string.h> + +#ifdef __cplusplus +extern "C" { +#endif + +// A list of types as they are encoded on-the-wire. +typedef enum { + UPB_WIRE_TYPE_VARINT = 0, + UPB_WIRE_TYPE_64BIT = 1, + UPB_WIRE_TYPE_DELIMITED = 2, + UPB_WIRE_TYPE_START_GROUP = 3, + UPB_WIRE_TYPE_END_GROUP = 4, + UPB_WIRE_TYPE_32BIT = 5, +} upb_wiretype_t; + +#define UPB_MAX_WIRE_TYPE 5 + +// The maximum number of bytes that it takes to encode a 64-bit varint. +// Note that with a better encoding this could be 9 (TODO: write up a +// wiki document about this). +#define UPB_PB_VARINT_MAX_LEN 10 + +// Array of the "native" (ie. non-packed-repeated) wire type for the given a +// descriptor type (upb_descriptortype_t). +extern const uint8_t upb_pb_native_wire_types[]; + +/* Zig-zag encoding/decoding **************************************************/ + +UPB_INLINE int32_t upb_zzdec_32(uint32_t n) { + return (n >> 1) ^ -(int32_t)(n & 1); +} +UPB_INLINE int64_t upb_zzdec_64(uint64_t n) { + return (n >> 1) ^ -(int64_t)(n & 1); +} +UPB_INLINE uint32_t upb_zzenc_32(int32_t n) { return (n << 1) ^ (n >> 31); } +UPB_INLINE uint64_t upb_zzenc_64(int64_t n) { return (n << 1) ^ (n >> 63); } + +/* Decoding *******************************************************************/ + +// All decoding functions return this struct by value. +typedef struct { + const char *p; // NULL if the varint was unterminated. + uint64_t val; +} upb_decoderet; + +// Four functions for decoding a varint of at most eight bytes. They are all +// functionally identical, but are implemented in different ways and likely have +// different performance profiles. We keep them around for performance testing. +// +// Note that these functions may not read byte-by-byte, so they must not be used +// unless there are at least eight bytes left in the buffer! +upb_decoderet upb_vdecode_max8_branch32(upb_decoderet r); +upb_decoderet upb_vdecode_max8_branch64(upb_decoderet r); +upb_decoderet upb_vdecode_max8_wright(upb_decoderet r); +upb_decoderet upb_vdecode_max8_massimino(upb_decoderet r); + +// Template for a function that checks the first two bytes with branching +// and dispatches 2-10 bytes with a separate function. Note that this may read +// up to 10 bytes, so it must not be used unless there are at least ten bytes +// left in the buffer! +#define UPB_VARINT_DECODER_CHECK2(name, decode_max8_function) \ +UPB_INLINE upb_decoderet upb_vdecode_check2_ ## name(const char *_p) { \ + uint8_t *p = (uint8_t*)_p; \ + if ((*p & 0x80) == 0) { upb_decoderet r = {_p + 1, *p & 0x7fU}; return r; } \ + upb_decoderet r = {_p + 2, (*p & 0x7fU) | ((*(p + 1) & 0x7fU) << 7)}; \ + if ((*(p + 1) & 0x80) == 0) return r; \ + return decode_max8_function(r); \ +} + +UPB_VARINT_DECODER_CHECK2(branch32, upb_vdecode_max8_branch32); +UPB_VARINT_DECODER_CHECK2(branch64, upb_vdecode_max8_branch64); +UPB_VARINT_DECODER_CHECK2(wright, upb_vdecode_max8_wright); +UPB_VARINT_DECODER_CHECK2(massimino, upb_vdecode_max8_massimino); +#undef UPB_VARINT_DECODER_CHECK2 + +// Our canonical functions for decoding varints, based on the currently +// favored best-performing implementations. +UPB_INLINE upb_decoderet upb_vdecode_fast(const char *p) { + if (sizeof(long) == 8) + return upb_vdecode_check2_branch64(p); + else + return upb_vdecode_check2_branch32(p); +} + +UPB_INLINE upb_decoderet upb_vdecode_max8_fast(upb_decoderet r) { + return upb_vdecode_max8_massimino(r); +} + + +/* Encoding *******************************************************************/ + +UPB_INLINE int upb_value_size(uint64_t val) { +#ifdef __GNUC__ + int high_bit = 63 - __builtin_clzll(val); // 0-based, undef if val == 0. +#else + int high_bit = 0; + uint64_t tmp = val; + while(tmp >>= 1) high_bit++; +#endif + return val == 0 ? 1 : high_bit / 8 + 1; +} + +// Encodes a 64-bit varint into buf (which must be >=UPB_PB_VARINT_MAX_LEN +// bytes long), returning how many bytes were used. +// +// TODO: benchmark and optimize if necessary. +UPB_INLINE size_t upb_vencode64(uint64_t val, char *buf) { + if (val == 0) { buf[0] = 0; return 1; } + size_t i = 0; + while (val) { + uint8_t byte = val & 0x7fU; + val >>= 7; + if (val) byte |= 0x80U; + buf[i++] = byte; + } + return i; +} + +UPB_INLINE size_t upb_varint_size(uint64_t val) { + char buf[UPB_PB_VARINT_MAX_LEN]; + return upb_vencode64(val, buf); +} + +// Encodes a 32-bit varint, *not* sign-extended. +UPB_INLINE uint64_t upb_vencode32(uint32_t val) { + char buf[UPB_PB_VARINT_MAX_LEN]; + size_t bytes = upb_vencode64(val, buf); + uint64_t ret = 0; + assert(bytes <= 5); + memcpy(&ret, buf, bytes); + assert(ret <= 0xffffffffffU); + return ret; +} + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* UPB_VARINT_DECODER_H_ */ +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009-2010 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * Implements a set of upb_handlers that write protobuf data to the binary wire + * format. + * + * This encoder implementation does not have any access to any out-of-band or + * precomputed lengths for submessages, so it must buffer submessages internally + * before it can emit the first byte. + */ + +#ifndef UPB_ENCODER_H_ +#define UPB_ENCODER_H_ + + +#ifdef __cplusplus +namespace upb { +namespace pb { +class Encoder; +} // namespace pb +} // namespace upb +#endif + +UPB_DECLARE_TYPE(upb::pb::Encoder, upb_pb_encoder); + +#define UPB_PBENCODER_MAX_NESTING 100 + +/* upb::pb::Encoder ***********************************************************/ + +// The output buffer is divided into segments; a segment is a string of data +// that is "ready to go" -- it does not need any varint lengths inserted into +// the middle. The seams between segments are where varints will be inserted +// once they are known. +// +// We also use the concept of a "run", which is a range of encoded bytes that +// occur at a single submessage level. Every segment contains one or more runs. +// +// A segment can span messages. Consider: +// +// .--Submessage lengths---------. +// | | | +// | V V +// V | |--------------- | |----------------- +// Submessages: | |----------------------------------------------- +// Top-level msg: ------------------------------------------------------------ +// +// Segments: ----- ------------------- ----------------- +// Runs: *---- *--------------*--- *---------------- +// (* marks the start) +// +// Note that the top-level menssage is not in any segment because it does not +// have any length preceding it. +// +// A segment is only interrupted when another length needs to be inserted. So +// observe how the second segment spans both the inner submessage and part of +// the next enclosing message. +typedef struct { + UPB_PRIVATE_FOR_CPP + uint32_t msglen; // The length to varint-encode before this segment. + uint32_t seglen; // Length of the segment. +} upb_pb_encoder_segment; + +UPB_DEFINE_CLASS0(upb::pb::Encoder, + public: + Encoder(const upb::Handlers* handlers); + ~Encoder(); + + static reffed_ptr<const Handlers> NewHandlers(const upb::MessageDef* msg); + + // Resets the state of the printer, so that it will expect to begin a new + // document. + void Reset(); + + // Resets the output pointer which will serve as our closure. + void ResetOutput(BytesSink* output); + + // The input to the encoder. + Sink* input(); + + private: + UPB_DISALLOW_COPY_AND_ASSIGN(Encoder); +, +UPB_DEFINE_STRUCT0(upb_pb_encoder, UPB_QUOTE( + // Our input and output. + upb_sink input_; + upb_bytessink *output_; + + // The "subclosure" -- used as the inner closure as part of the bytessink + // protocol. + void *subc; + + // The output buffer and limit, and our current write position. "buf" + // initially points to "initbuf", but is dynamically allocated if we need to + // grow beyond the initial size. + char *buf, *ptr, *limit; + + // The beginning of the current run, or undefined if we are at the top level. + char *runbegin; + + // The list of segments we are accumulating. + upb_pb_encoder_segment *segbuf, *segptr, *seglimit; + + // The stack of enclosing submessages. Each entry in the stack points to the + // segment where this submessage's length is being accumulated. + int stack[UPB_PBENCODER_MAX_NESTING], *top, *stacklimit; + + // Depth of startmsg/endmsg calls. + int depth; + + // Initial buffers for the output buffer and segment buffer. If we outgrow + // these we will dynamically allocate bigger ones. + char initbuf[256]; + upb_pb_encoder_segment seginitbuf[32]; +))); + +UPB_BEGIN_EXTERN_C + +const upb_handlers *upb_pb_encoder_newhandlers(const upb_msgdef *m, + const void *owner); +void upb_pb_encoder_reset(upb_pb_encoder *e); +upb_sink *upb_pb_encoder_input(upb_pb_encoder *p); +void upb_pb_encoder_init(upb_pb_encoder *e, const upb_handlers *h); +void upb_pb_encoder_resetoutput(upb_pb_encoder *e, upb_bytessink *output); +void upb_pb_encoder_uninit(upb_pb_encoder *e); + +UPB_END_EXTERN_C + +#ifdef __cplusplus + +namespace upb { +namespace pb { +inline Encoder::Encoder(const upb::Handlers* handlers) { + upb_pb_encoder_init(this, handlers); +} +inline Encoder::~Encoder() { + upb_pb_encoder_uninit(this); +} +inline void Encoder::Reset() { + upb_pb_encoder_reset(this); +} +inline void Encoder::ResetOutput(BytesSink* output) { + upb_pb_encoder_resetoutput(this, output); +} +inline Sink* Encoder::input() { + return upb_pb_encoder_input(this); +} +inline reffed_ptr<const Handlers> Encoder::NewHandlers( + const upb::MessageDef *md) { + const Handlers* h = upb_pb_encoder_newhandlers(md, &h); + return reffed_ptr<const Handlers>(h, &h); +} +} // namespace pb +} // namespace upb + +#endif + +#endif /* UPB_ENCODER_H_ */ +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2011-2012 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * upb's core components like upb_decoder and upb_msg are carefully designed to + * avoid depending on each other for maximum orthogonality. In other words, + * you can use a upb_decoder to decode into *any* kind of structure; upb_msg is + * just one such structure. A upb_msg can be serialized/deserialized into any + * format, protobuf binary format is just one such format. + * + * However, for convenience we provide functions here for doing common + * operations like deserializing protobuf binary format into a upb_msg. The + * compromise is that this file drags in almost all of upb as a dependency, + * which could be undesirable if you're trying to use a trimmed-down build of + * upb. + * + * While these routines are convenient, they do not reuse any encoding/decoding + * state. For example, if a decoder is JIT-based, it will be re-JITted every + * time these functions are called. For this reason, if you are parsing lots + * of data and efficiency is an issue, these may not be the best functions to + * use (though they are useful for prototyping, before optimizing). + */ + +#ifndef UPB_GLUE_H +#define UPB_GLUE_H + +#include <stdbool.h> + +#ifdef __cplusplus +extern "C" { +#endif + +// Loads all defs from the given protobuf binary descriptor, setting default +// accessors and a default layout on all messages. The caller owns the +// returned array of defs, which will be of length *n. On error NULL is +// returned and status is set (if non-NULL). +upb_def **upb_load_defs_from_descriptor(const char *str, size_t len, int *n, + void *owner, upb_status *status); + +// Like the previous but also adds the loaded defs to the given symtab. +bool upb_load_descriptor_into_symtab(upb_symtab *symtab, const char *str, + size_t len, upb_status *status); + +// Like the previous but also reads the descriptor from the given filename. +bool upb_load_descriptor_file_into_symtab(upb_symtab *symtab, const char *fname, + upb_status *status); + +// Reads the given filename into a character string, returning NULL if there +// was an error. +char *upb_readfile(const char *filename, size_t *len); + +#ifdef __cplusplus +} /* extern "C" */ + +namespace upb { + +// All routines that load descriptors expect the descriptor to be a +// FileDescriptorSet. +inline bool LoadDescriptorFileIntoSymtab(SymbolTable* s, const char *fname, + Status* status) { + return upb_load_descriptor_file_into_symtab(s, fname, status); +} + +inline bool LoadDescriptorIntoSymtab(SymbolTable* s, const char* str, + size_t len, Status* status) { + return upb_load_descriptor_into_symtab(s, str, len, status); +} + +// Templated so it can accept both string and std::string. +template <typename T> +bool LoadDescriptorIntoSymtab(SymbolTable* s, const T& desc, Status* status) { + return upb_load_descriptor_into_symtab(s, desc.c_str(), desc.size(), status); +} + +} // namespace upb + +#endif + +#endif +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2009 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + */ + +#ifndef UPB_TEXT_H_ +#define UPB_TEXT_H_ + + +#ifdef __cplusplus +namespace upb { +namespace pb { +class TextPrinter; +} // namespace pb +} // namespace upb +#endif + +UPB_DECLARE_TYPE(upb::pb::TextPrinter, upb_textprinter); + +UPB_DEFINE_CLASS0(upb::pb::TextPrinter, + public: + // The given handlers must have come from NewHandlers(). It must outlive the + // TextPrinter. + explicit TextPrinter(const upb::Handlers* handlers); + + void SetSingleLineMode(bool single_line); + + bool ResetOutput(BytesSink* output); + Sink* input(); + + // If handler caching becomes a requirement we can add a code cache as in + // decoder.h + static reffed_ptr<const Handlers> NewHandlers(const MessageDef* md); + + private: +, +UPB_DEFINE_STRUCT0(upb_textprinter, + upb_sink input_; + upb_bytessink *output_; + int indent_depth_; + bool single_line_; + void *subc; +)); + +UPB_BEGIN_EXTERN_C // { + +// C API. +void upb_textprinter_init(upb_textprinter *p, const upb_handlers *h); +void upb_textprinter_uninit(upb_textprinter *p); +bool upb_textprinter_resetoutput(upb_textprinter *p, upb_bytessink *output); +void upb_textprinter_setsingleline(upb_textprinter *p, bool single_line); +upb_sink *upb_textprinter_input(upb_textprinter *p); + +const upb_handlers *upb_textprinter_newhandlers(const upb_msgdef *m, + const void *owner); + +UPB_END_EXTERN_C // } + +#ifdef __cplusplus + +namespace upb { +namespace pb { +inline TextPrinter::TextPrinter(const upb::Handlers* handlers) { + upb_textprinter_init(this, handlers); +} +inline void TextPrinter::SetSingleLineMode(bool single_line) { + upb_textprinter_setsingleline(this, single_line); +} +inline bool TextPrinter::ResetOutput(BytesSink* output) { + return upb_textprinter_resetoutput(this, output); +} +inline Sink* TextPrinter::input() { + return upb_textprinter_input(this); +} +inline reffed_ptr<const Handlers> TextPrinter::NewHandlers( + const MessageDef *md) { + const Handlers* h = upb_textprinter_newhandlers(md, &h); + return reffed_ptr<const Handlers>(h, &h); +} +} // namespace pb +} // namespace upb + +#endif + +#endif /* UPB_TEXT_H_ */ +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2014 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * upb::json::Parser can parse JSON according to a specific schema. + * Support for parsing arbitrary JSON (schema-less) will be added later. + */ + +#ifndef UPB_JSON_PARSER_H_ +#define UPB_JSON_PARSER_H_ + + +#ifdef __cplusplus +namespace upb { +namespace json { +class Parser; +} // namespace json +} // namespace upb +#endif + +UPB_DECLARE_TYPE(upb::json::Parser, upb_json_parser); + +// Internal-only struct used by the parser. +typedef struct { + UPB_PRIVATE_FOR_CPP + upb_sink sink; + const upb_msgdef *m; + const upb_fielddef *f; +} upb_jsonparser_frame; + + +/* upb::json::Parser **********************************************************/ + +#define UPB_JSON_MAX_DEPTH 64 + +// Parses an incoming BytesStream, pushing the results to the destination sink. +UPB_DEFINE_CLASS0(upb::json::Parser, + public: + Parser(Status* status); + ~Parser(); + + // Resets the state of the printer, so that it will expect to begin a new + // document. + void Reset(); + + // Resets the output pointer which will serve as our closure. Implies + // Reset(). + void ResetOutput(Sink* output); + + // The input to the printer. + BytesSink* input(); +, +UPB_DEFINE_STRUCT0(upb_json_parser, + upb_byteshandler input_handler_; + upb_bytessink input_; + + // Stack to track the JSON scopes we are in. + upb_jsonparser_frame stack[UPB_JSON_MAX_DEPTH]; + upb_jsonparser_frame *top; + upb_jsonparser_frame *limit; + + upb_status *status; + + // Ragel's internal parsing stack for the parsing state machine. + int current_state; + int parser_stack[UPB_JSON_MAX_DEPTH]; + int parser_top; + + // A pointer to the beginning of whatever text we are currently parsing. + const char *text_begin; + + // We have to accumulate text for member names, integers, unicode escapes, and + // base64 partial results. + const char *accumulated; + size_t accumulated_len; + // TODO: add members and code for allocating a buffer when necessary (when the + // member spans input buffers or contains escapes). +)); + +UPB_BEGIN_EXTERN_C + +void upb_json_parser_init(upb_json_parser *p, upb_status *status); +void upb_json_parser_uninit(upb_json_parser *p); +void upb_json_parser_reset(upb_json_parser *p); +void upb_json_parser_resetoutput(upb_json_parser *p, upb_sink *output); +upb_bytessink *upb_json_parser_input(upb_json_parser *p); + +UPB_END_EXTERN_C + +#ifdef __cplusplus + +namespace upb { +namespace json { +inline Parser::Parser(Status* status) { upb_json_parser_init(this, status); } +inline Parser::~Parser() { upb_json_parser_uninit(this); } +inline void Parser::Reset() { upb_json_parser_reset(this); } +inline void Parser::ResetOutput(Sink* output) { + upb_json_parser_resetoutput(this, output); +} +inline BytesSink* Parser::input() { + return upb_json_parser_input(this); +} +} // namespace json +} // namespace upb + +#endif + + +#endif // UPB_JSON_PARSER_H_ +/* + * upb - a minimalist implementation of protocol buffers. + * + * Copyright (c) 2014 Google Inc. See LICENSE for details. + * Author: Josh Haberman <jhaberman@gmail.com> + * + * upb::json::Printer allows you to create handlers that emit JSON + * according to a specific protobuf schema. + */ + +#ifndef UPB_JSON_TYPED_PRINTER_H_ +#define UPB_JSON_TYPED_PRINTER_H_ + + +#ifdef __cplusplus +namespace upb { +namespace json { +class Printer; +} // namespace json +} // namespace upb +#endif + +UPB_DECLARE_TYPE(upb::json::Printer, upb_json_printer); + + +/* upb::json::Printer *********************************************************/ + +// Prints an incoming stream of data to a BytesSink in JSON format. +UPB_DEFINE_CLASS0(upb::json::Printer, + public: + Printer(const upb::Handlers* handlers); + ~Printer(); + + // Resets the state of the printer, so that it will expect to begin a new + // document. + void Reset(); + + // Resets the output pointer which will serve as our closure. Implies + // Reset(). + void ResetOutput(BytesSink* output); + + // The input to the printer. + Sink* input(); + + // Returns handlers for printing according to the specified schema. + static reffed_ptr<const Handlers> NewHandlers(const upb::MessageDef* md); +, +UPB_DEFINE_STRUCT0(upb_json_printer, + upb_sink input_; + // BytesSink closure. + void *subc_; + upb_bytessink *output_; + + // We track the depth so that we know when to emit startstr/endstr on the + // output. + int depth_; + // Have we emitted the first element? This state is necessary to emit commas + // without leaving a trailing comma in arrays/maps. We keep this state per + // frame depth. + // + // Why max_depth * 2? UPB_MAX_HANDLER_DEPTH counts depth as nested messages. + // We count frames (contexts in which we separate elements by commas) as both + // repeated fields and messages (maps), and the worst case is a + // message->repeated field->submessage->repeated field->... nesting. + bool first_elem_[UPB_MAX_HANDLER_DEPTH * 2]; +)); + +UPB_BEGIN_EXTERN_C // { + +// Native C API. + +void upb_json_printer_init(upb_json_printer *p, const upb_handlers *h); +void upb_json_printer_uninit(upb_json_printer *p); +void upb_json_printer_reset(upb_json_printer *p); +void upb_json_printer_resetoutput(upb_json_printer *p, upb_bytessink *output); +upb_sink *upb_json_printer_input(upb_json_printer *p); +const upb_handlers *upb_json_printer_newhandlers(const upb_msgdef *md, + const void *owner); + +UPB_END_EXTERN_C // } + +#ifdef __cplusplus + +namespace upb { +namespace json { +inline Printer::Printer(const upb::Handlers* handlers) { + upb_json_printer_init(this, handlers); +} +inline Printer::~Printer() { upb_json_printer_uninit(this); } +inline void Printer::Reset() { upb_json_printer_reset(this); } +inline void Printer::ResetOutput(BytesSink* output) { + upb_json_printer_resetoutput(this, output); +} +inline Sink* Printer::input() { return upb_json_printer_input(this); } +inline reffed_ptr<const Handlers> Printer::NewHandlers( + const upb::MessageDef *md) { + const Handlers* h = upb_json_printer_newhandlers(md, &h); + return reffed_ptr<const Handlers>(h, &h); +} +} // namespace json +} // namespace upb + +#endif + +#endif // UPB_JSON_TYPED_PRINTER_H_ diff --git a/ruby/ext/protobuf_c/extconf.rb b/ruby/ext/protobuf_c/extconf.rb deleted file mode 100644 index 7f23b1a8..00000000 --- a/ruby/ext/protobuf_c/extconf.rb +++ /dev/null @@ -1,23 +0,0 @@ -#!/usr/bin/ruby - -require 'mkmf' - -upb_path = File.absolute_path(File.dirname($0)) + "/../../../upb" -libs = ["upb_pic", "upb.pb_pic", "upb.json_pic"] -system("cd #{upb_path}; make " + libs.map{|l| "lib/lib#{l}.a"}.join(" ")) - -$CFLAGS += " -O3 -std=c99 -Wno-unused-function -DNDEBUG" - -find_header("upb/upb.h", upb_path) or - raise "Can't find upb headers" -find_library("upb_pic", "upb_msgdef_new", upb_path + "/lib") or - raise "Can't find upb lib" -find_library("upb.pb_pic", "upb_pbdecoder_init", upb_path + "/lib") or - raise "Can't find upb.pb lib" -find_library("upb.json_pic", "upb_json_printer_init", upb_path + "/lib") or - raise "Can't find upb.pb lib" - -$objs = ["protobuf.o", "defs.o", "storage.o", "message.o", - "repeated_field.o", "encode_decode.o"] - -create_makefile("protobuf_c") diff --git a/ruby/google-protobuf.gemspec b/ruby/google-protobuf.gemspec new file mode 100644 index 00000000..87033ac4 --- /dev/null +++ b/ruby/google-protobuf.gemspec @@ -0,0 +1,22 @@ +class << Gem::Specification + def find_c_source(dir) + `cd #{dir}; git ls-files "*.c" "*.h" extconf.rb Makefile`.split + .map{|f| "#{dir}/#{f}"} + end +end + +Gem::Specification.new do |s| + s.name = "google-protobuf" + s.version = "3.0.0.alpha.2" + s.licenses = ["BSD"] + s.summary = "Protocol Buffers" + s.description = "Protocol Buffers are Google's data interchange format." + s.authors = ["Protobuf Authors"] + s.email = "protobuf@googlegroups.com" + s.require_paths = ["lib"] + s.extensions = ["ext/google/protobuf_c/extconf.rb"] + s.files = ["lib/google/protobuf.rb"] + + # extension C source + find_c_source("ext/google/protobuf_c") + s.test_files = `git ls-files -- tests`.split +end diff --git a/ruby/lib/protobuf.rb b/ruby/lib/google/protobuf.rb index 2ace48f9..74053332 100644 --- a/ruby/lib/protobuf.rb +++ b/ruby/lib/google/protobuf.rb @@ -28,4 +28,4 @@ # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -require 'protobuf_c' +require 'google/protobuf_c' diff --git a/ruby/tests/basic.rb b/ruby/tests/basic.rb index 237fbb06..05b3a0fa 100644 --- a/ruby/tests/basic.rb +++ b/ruby/tests/basic.rb @@ -1,6 +1,6 @@ #!/usr/bin/ruby -require 'protobuf' +require 'google/protobuf' require 'test/unit' # ------------- generated code -------------- diff --git a/ruby/tests/stress.rb b/ruby/tests/stress.rb index cc4bbf5c..1bd768ed 100644 --- a/ruby/tests/stress.rb +++ b/ruby/tests/stress.rb @@ -1,6 +1,6 @@ #!/usr/bin/ruby -require 'protobuf' +require 'google/protobuf' require 'test/unit' module StressTest diff --git a/src/google/protobuf/compiler/ruby/ruby_generator.cc b/src/google/protobuf/compiler/ruby/ruby_generator.cc index 82ccd72b..e70425ff 100644 --- a/src/google/protobuf/compiler/ruby/ruby_generator.cc +++ b/src/google/protobuf/compiler/ruby/ruby_generator.cc @@ -261,7 +261,7 @@ void GenerateFile(const google::protobuf::FileDescriptor* file, "filename", file->name()); printer->Print( - "require 'protobuf'\n\n"); + "require 'google/protobuf'\n\n"); for (int i = 0; i < file->dependency_count(); i++) { const std::string& name = file->dependency(i)->name(); diff --git a/upb b/upb deleted file mode 160000 -Subproject 56913be6bb57f81dbbf7baf9cc9a0a2cd1a3649 |