From e96ff30120a3834f7d1e31e43e591bf7cfbd731f Mon Sep 17 00:00:00 2001 From: Feng Xiao Date: Mon, 15 Jun 2015 18:21:48 -0700 Subject: Down-integrate from internal code base. [ci skip] Change-Id: I9391c09640e0b0b2b21c45a97a1fc91814d95c5d --- src/google/protobuf/util/internal/type_info.cc | 171 +++++++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 src/google/protobuf/util/internal/type_info.cc (limited to 'src/google/protobuf/util/internal/type_info.cc') diff --git a/src/google/protobuf/util/internal/type_info.cc b/src/google/protobuf/util/internal/type_info.cc new file mode 100644 index 00000000..6392e18c --- /dev/null +++ b/src/google/protobuf/util/internal/type_info.cc @@ -0,0 +1,171 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +namespace google { +namespace protobuf { +namespace util { +namespace converter { + +namespace { + +// A TypeInfo that looks up information provided by a TypeResolver. +class TypeInfoForTypeResolver : public TypeInfo { + public: + explicit TypeInfoForTypeResolver(TypeResolver* type_resolver) + : type_resolver_(type_resolver) {} + + virtual ~TypeInfoForTypeResolver() { + DeleteCachedTypes(&cached_types_); + DeleteCachedTypes(&cached_enums_); + } + + virtual util::StatusOr ResolveTypeUrl( + StringPiece type_url) { + map::iterator it = cached_types_.find(type_url); + if (it != cached_types_.end()) { + return it->second; + } + // Stores the string value so it can be referenced using StringPiece in the + // cached_types_ map. + const string& string_type_url = + *string_storage_.insert(type_url.ToString()).first; + google::protobuf::scoped_ptr type(new google::protobuf::Type()); + util::Status status = + type_resolver_->ResolveMessageType(string_type_url, type.get()); + StatusOrType result = + status.ok() ? StatusOrType(type.release()) : StatusOrType(status); + cached_types_[string_type_url] = result; + return result; + } + + virtual const google::protobuf::Type* GetType(StringPiece type_url) { + StatusOrType result = ResolveTypeUrl(type_url); + return result.ok() ? result.ValueOrDie() : NULL; + } + + virtual const google::protobuf::Enum* GetEnum(StringPiece type_url) { + map::iterator it = cached_enums_.find(type_url); + if (it != cached_enums_.end()) { + return it->second.ok() ? it->second.ValueOrDie() : NULL; + } + // Stores the string value so it can be referenced using StringPiece in the + // cached_enums_ map. + const string& string_type_url = + *string_storage_.insert(type_url.ToString()).first; + google::protobuf::scoped_ptr enum_type( + new google::protobuf::Enum()); + util::Status status = + type_resolver_->ResolveEnumType(string_type_url, enum_type.get()); + StatusOrEnum result = + status.ok() ? StatusOrEnum(enum_type.release()) : StatusOrEnum(status); + cached_enums_[string_type_url] = result; + return result.ok() ? result.ValueOrDie() : NULL; + } + + virtual const google::protobuf::Field* FindField( + const google::protobuf::Type* type, StringPiece camel_case_name) { + if (indexed_types_.find(type) == indexed_types_.end()) { + PopulateNameLookupTable(type); + indexed_types_.insert(type); + } + StringPiece name = + FindWithDefault(camel_case_name_table_, camel_case_name, StringPiece()); + if (name.empty()) { + // Didn't find a mapping. Use whatever provided. + name = camel_case_name; + } + return FindFieldInTypeOrNull(type, name); + } + + private: + typedef util::StatusOr StatusOrType; + typedef util::StatusOr StatusOrEnum; + + template + static void DeleteCachedTypes(map* cached_types) { + for (typename map::iterator it = cached_types->begin(); + it != cached_types->end(); ++it) { + if (it->second.ok()) { + delete it->second.ValueOrDie(); + } + } + } + + void PopulateNameLookupTable(const google::protobuf::Type* type) { + for (int i = 0; i < type->fields_size(); ++i) { + const google::protobuf::Field& field = type->fields(i); + StringPiece name = field.name(); + StringPiece camel_case_name = + *string_storage_.insert(ToCamelCase(name)).first; + const StringPiece* existing = InsertOrReturnExisting( + &camel_case_name_table_, camel_case_name, name); + if (existing && *existing != name) { + GOOGLE_LOG(WARNING) << "Field '" << name << "' and '" << *existing + << "' map to the same camel case name '" << camel_case_name + << "'."; + } + } + } + + TypeResolver* type_resolver_; + + // Stores string values that will be referenced by StringPieces in + // cached_types_, cached_enums_ and camel_case_name_table_. + set string_storage_; + + map cached_types_; + map cached_enums_; + + set indexed_types_; + map camel_case_name_table_; +}; +} // namespace + +TypeInfo* TypeInfo::NewTypeInfo(TypeResolver* type_resolver) { + return new TypeInfoForTypeResolver(type_resolver); +} + +} // namespace converter +} // namespace util +} // namespace protobuf +} // namespace google -- cgit v1.2.3