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Diffstat (limited to 'third_party/protobuf/3.6.0/src/google/protobuf/descriptor.h')
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diff --git a/third_party/protobuf/3.6.0/src/google/protobuf/descriptor.h b/third_party/protobuf/3.6.0/src/google/protobuf/descriptor.h new file mode 100644 index 0000000000..115d4ddc26 --- /dev/null +++ b/third_party/protobuf/3.6.0/src/google/protobuf/descriptor.h @@ -0,0 +1,2138 @@ +// 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. + +// Author: kenton@google.com (Kenton Varda) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. +// +// This file contains classes which describe a type of protocol message. +// You can use a message's descriptor to learn at runtime what fields +// it contains and what the types of those fields are. The Message +// interface also allows you to dynamically access and modify individual +// fields by passing the FieldDescriptor of the field you are interested +// in. +// +// Most users will not care about descriptors, because they will write +// code specific to certain protocol types and will simply use the classes +// generated by the protocol compiler directly. Advanced users who want +// to operate on arbitrary types (not known at compile time) may want to +// read descriptors in order to learn about the contents of a message. +// A very small number of users will want to construct their own +// Descriptors, either because they are implementing Message manually or +// because they are writing something like the protocol compiler. +// +// For an example of how you might use descriptors, see the code example +// at the top of message.h. + +#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_H__ +#define GOOGLE_PROTOBUF_DESCRIPTOR_H__ + +#include <memory> +#include <set> +#include <string> +#include <vector> +#include <google/protobuf/stubs/common.h> +#include <google/protobuf/stubs/mutex.h> +#include <google/protobuf/stubs/once.h> + +// TYPE_BOOL is defined in the MacOS's ConditionalMacros.h. +#ifdef TYPE_BOOL +#undef TYPE_BOOL +#endif // TYPE_BOOL + +namespace google { +namespace protobuf { + +// Defined in this file. +class Descriptor; +class FieldDescriptor; +class OneofDescriptor; +class EnumDescriptor; +class EnumValueDescriptor; +class ServiceDescriptor; +class MethodDescriptor; +class FileDescriptor; +class DescriptorDatabase; +class DescriptorPool; + +// Defined in descriptor.proto +class DescriptorProto; +class DescriptorProto_ExtensionRange; +class FieldDescriptorProto; +class OneofDescriptorProto; +class EnumDescriptorProto; +class EnumValueDescriptorProto; +class ServiceDescriptorProto; +class MethodDescriptorProto; +class FileDescriptorProto; +class MessageOptions; +class FieldOptions; +class OneofOptions; +class EnumOptions; +class EnumValueOptions; +class ExtensionRangeOptions; +class ServiceOptions; +class MethodOptions; +class FileOptions; +class UninterpretedOption; +class SourceCodeInfo; + +// Defined in message.h +class Message; + +// Defined in descriptor.cc +class DescriptorBuilder; +class FileDescriptorTables; +struct Symbol; + +// Defined in unknown_field_set.h. +class UnknownField; + +// Defined in generated_message_reflection.h. +namespace internal { +class GeneratedMessageReflection; +} // namespace internal + +// Defined in command_line_interface.cc +namespace compiler { +class CommandLineInterface; +} // namespace compiler + +namespace descriptor_unittest { +class DescriptorTest; +} // namespace descriptor_unittest + +// Defined in printer.h +namespace io { +class Printer; +} // namespace io + +// NB, all indices are zero-based. +struct SourceLocation { + int start_line; + int end_line; + int start_column; + int end_column; + + // Doc comments found at the source location. + // See the comments in SourceCodeInfo.Location (descriptor.proto) for details. + string leading_comments; + string trailing_comments; + std::vector<string> leading_detached_comments; +}; + +// Options when generating machine-parsable output from a descriptor with +// DebugString(). +struct DebugStringOptions { + // include original user comments as recorded in SourceLocation entries. N.B. + // that this must be |false| by default: several other pieces of code (for + // example, the C++ code generation for fields in the proto compiler) rely on + // DebugString() output being unobstructed by user comments. + bool include_comments; + // If true, elide the braced body in the debug string. + bool elide_group_body; + bool elide_oneof_body; + + DebugStringOptions() + : include_comments(false), + elide_group_body(false), + elide_oneof_body(false) {} +}; + +// A class to handle the simplest cases of a lazily linked descriptor +// for a message type that isn't built at the time of cross linking, +// which is needed when a pool has lazily_build_dependencies_ set. +// Must be instantiated as mutable in a descriptor. +namespace internal { +class LIBPROTOBUF_EXPORT LazyDescriptor { + public: + // Init function to be called at init time of a descriptor containing + // a LazyDescriptor. + void Init() { + descriptor_ = NULL; + name_ = NULL; + once_ = NULL; + file_ = NULL; + } + + // Sets the value of the descriptor if it is known during the descriptor + // building process. Not thread safe, should only be called during the + // descriptor build process. Should not be called after SetLazy has been + // called. + void Set(const Descriptor* descriptor); + + // Sets the information needed to lazily cross link the descriptor at a later + // time, SetLazy is not thread safe, should be called only once at descriptor + // build time if the symbol wasn't found and building of the file containing + // that type is delayed because lazily_build_dependencies_ is set on the pool. + // Should not be called after Set() has been called. + void SetLazy(const string& name, const FileDescriptor* file); + + // Returns the current value of the descriptor, thread-safe. If SetLazy(...) + // has been called, will do a one-time cross link of the type specified, + // building the descriptor file that contains the type if necessary. + inline const Descriptor* Get() { + Once(); + return descriptor_; + } + + private: + static void OnceStatic(LazyDescriptor* lazy); + void OnceInternal(); + void Once(); + + const Descriptor* descriptor_; + const string* name_; + GoogleOnceDynamic* once_; + const FileDescriptor* file_; +}; +} // namespace internal + +// Describes a type of protocol message, or a particular group within a +// message. To obtain the Descriptor for a given message object, call +// Message::GetDescriptor(). Generated message classes also have a +// static method called descriptor() which returns the type's descriptor. +// Use DescriptorPool to construct your own descriptors. +class LIBPROTOBUF_EXPORT Descriptor { + public: + // The name of the message type, not including its scope. + const string& name() const; + + // The fully-qualified name of the message type, scope delimited by + // periods. For example, message type "Foo" which is declared in package + // "bar" has full name "bar.Foo". If a type "Baz" is nested within + // Foo, Baz's full_name is "bar.Foo.Baz". To get only the part that + // comes after the last '.', use name(). + const string& full_name() const; + + // Index of this descriptor within the file or containing type's message + // type array. + int index() const; + + // The .proto file in which this message type was defined. Never NULL. + const FileDescriptor* file() const; + + // If this Descriptor describes a nested type, this returns the type + // in which it is nested. Otherwise, returns NULL. + const Descriptor* containing_type() const; + + // Get options for this message type. These are specified in the .proto file + // by placing lines like "option foo = 1234;" in the message definition. + // Allowed options are defined by MessageOptions in + // google/protobuf/descriptor.proto, and any available extensions of that + // message. + const MessageOptions& options() const; + + // Write the contents of this Descriptor into the given DescriptorProto. + // The target DescriptorProto must be clear before calling this; if it + // isn't, the result may be garbage. + void CopyTo(DescriptorProto* proto) const; + + // Write the contents of this decriptor in a human-readable form. Output + // will be suitable for re-parsing. + string DebugString() const; + + // Similar to DebugString(), but additionally takes options (e.g., + // include original user comments in output). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + // Returns true if this is a placeholder for an unknown type. This will + // only be the case if this descriptor comes from a DescriptorPool + // with AllowUnknownDependencies() set. + bool is_placeholder() const; + + // Field stuff ----------------------------------------------------- + + // The number of fields in this message type. + int field_count() const; + // Gets a field by index, where 0 <= index < field_count(). + // These are returned in the order they were defined in the .proto file. + const FieldDescriptor* field(int index) const; + + // Looks up a field by declared tag number. Returns NULL if no such field + // exists. + const FieldDescriptor* FindFieldByNumber(int number) const; + // Looks up a field by name. Returns NULL if no such field exists. + const FieldDescriptor* FindFieldByName(const string& name) const; + + // Looks up a field by lowercased name (as returned by lowercase_name()). + // This lookup may be ambiguous if multiple field names differ only by case, + // in which case the field returned is chosen arbitrarily from the matches. + const FieldDescriptor* FindFieldByLowercaseName( + const string& lowercase_name) const; + + // Looks up a field by camel-case name (as returned by camelcase_name()). + // This lookup may be ambiguous if multiple field names differ in a way that + // leads them to have identical camel-case names, in which case the field + // returned is chosen arbitrarily from the matches. + const FieldDescriptor* FindFieldByCamelcaseName( + const string& camelcase_name) const; + + // The number of oneofs in this message type. + int oneof_decl_count() const; + // Get a oneof by index, where 0 <= index < oneof_decl_count(). + // These are returned in the order they were defined in the .proto file. + const OneofDescriptor* oneof_decl(int index) const; + + // Looks up a oneof by name. Returns NULL if no such oneof exists. + const OneofDescriptor* FindOneofByName(const string& name) const; + + // Nested type stuff ----------------------------------------------- + + // The number of nested types in this message type. + int nested_type_count() const; + // Gets a nested type by index, where 0 <= index < nested_type_count(). + // These are returned in the order they were defined in the .proto file. + const Descriptor* nested_type(int index) const; + + // Looks up a nested type by name. Returns NULL if no such nested type + // exists. + const Descriptor* FindNestedTypeByName(const string& name) const; + + // Enum stuff ------------------------------------------------------ + + // The number of enum types in this message type. + int enum_type_count() const; + // Gets an enum type by index, where 0 <= index < enum_type_count(). + // These are returned in the order they were defined in the .proto file. + const EnumDescriptor* enum_type(int index) const; + + // Looks up an enum type by name. Returns NULL if no such enum type exists. + const EnumDescriptor* FindEnumTypeByName(const string& name) const; + + // Looks up an enum value by name, among all enum types in this message. + // Returns NULL if no such value exists. + const EnumValueDescriptor* FindEnumValueByName(const string& name) const; + + // Extensions ------------------------------------------------------ + + // A range of field numbers which are designated for third-party + // extensions. + struct ExtensionRange { + typedef ExtensionRangeOptions OptionsType; + + // See Descriptor::CopyTo(). + void CopyTo(DescriptorProto_ExtensionRange* proto) const; + + int start; // inclusive + int end; // exclusive + + const ExtensionRangeOptions* options_; + }; + + // The number of extension ranges in this message type. + int extension_range_count() const; + // Gets an extension range by index, where 0 <= index < + // extension_range_count(). These are returned in the order they were defined + // in the .proto file. + const ExtensionRange* extension_range(int index) const; + + // Returns true if the number is in one of the extension ranges. + bool IsExtensionNumber(int number) const; + + // Returns NULL if no extension range contains the given number. + const ExtensionRange* FindExtensionRangeContainingNumber(int number) const; + + // The number of extensions -- extending *other* messages -- that were + // defined nested within this message type's scope. + int extension_count() const; + // Get an extension by index, where 0 <= index < extension_count(). + // These are returned in the order they were defined in the .proto file. + const FieldDescriptor* extension(int index) const; + + // Looks up a named extension (which extends some *other* message type) + // defined within this message type's scope. + const FieldDescriptor* FindExtensionByName(const string& name) const; + + // Similar to FindFieldByLowercaseName(), but finds extensions defined within + // this message type's scope. + const FieldDescriptor* FindExtensionByLowercaseName(const string& name) const; + + // Similar to FindFieldByCamelcaseName(), but finds extensions defined within + // this message type's scope. + const FieldDescriptor* FindExtensionByCamelcaseName(const string& name) const; + + // Reserved fields ------------------------------------------------- + + // A range of reserved field numbers. + struct ReservedRange { + int start; // inclusive + int end; // exclusive + }; + + // The number of reserved ranges in this message type. + int reserved_range_count() const; + // Gets an reserved range by index, where 0 <= index < + // reserved_range_count(). These are returned in the order they were defined + // in the .proto file. + const ReservedRange* reserved_range(int index) const; + + // Returns true if the number is in one of the reserved ranges. + bool IsReservedNumber(int number) const; + + // Returns NULL if no reserved range contains the given number. + const ReservedRange* FindReservedRangeContainingNumber(int number) const; + + // The number of reserved field names in this message type. + int reserved_name_count() const; + + // Gets a reserved name by index, where 0 <= index < reserved_name_count(). + const string& reserved_name(int index) const; + + // Returns true if the field name is reserved. + bool IsReservedName(const string& name) const; + + // Source Location --------------------------------------------------- + + // Updates |*out_location| to the source location of the complete + // extent of this message declaration. Returns false and leaves + // |*out_location| unchanged iff location information was not available. + bool GetSourceLocation(SourceLocation* out_location) const; + + private: + typedef MessageOptions OptionsType; + + // Allows tests to test CopyTo(proto, true). + friend class ::google::protobuf::descriptor_unittest::DescriptorTest; + + // Allows access to GetLocationPath for annotations. + friend class ::google::protobuf::io::Printer; + + // Fill the json_name field of FieldDescriptorProto. + void CopyJsonNameTo(DescriptorProto* proto) const; + + // Internal version of DebugString; controls the level of indenting for + // correct depth. Takes |options| to control debug-string options, and + // |include_opening_clause| to indicate whether the "message ... " part of the + // clause has already been generated (this varies depending on context). + void DebugString(int depth, string *contents, + const DebugStringOptions& options, + bool include_opening_clause) const; + + // Walks up the descriptor tree to generate the source location path + // to this descriptor from the file root. + void GetLocationPath(std::vector<int>* output) const; + + const string* name_; + const string* full_name_; + const FileDescriptor* file_; + const Descriptor* containing_type_; + const MessageOptions* options_; + + // These arrays are separated from their sizes to minimize padding on 64-bit. + FieldDescriptor* fields_; + OneofDescriptor* oneof_decls_; + Descriptor* nested_types_; + EnumDescriptor* enum_types_; + ExtensionRange* extension_ranges_; + FieldDescriptor* extensions_; + ReservedRange* reserved_ranges_; + const string** reserved_names_; + + int field_count_; + int oneof_decl_count_; + int nested_type_count_; + int enum_type_count_; + int extension_range_count_; + int extension_count_; + int reserved_range_count_; + int reserved_name_count_; + + // True if this is a placeholder for an unknown type. + bool is_placeholder_; + // True if this is a placeholder and the type name wasn't fully-qualified. + bool is_unqualified_placeholder_; + + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<Descriptor>() and AllocateArray<Descriptor>() in descriptor.cc + // and update them to initialize the field. + + // Must be constructed using DescriptorPool. + Descriptor() {} + friend class DescriptorBuilder; + friend class DescriptorPool; + friend class EnumDescriptor; + friend class FieldDescriptor; + friend class OneofDescriptor; + friend class MethodDescriptor; + friend class FileDescriptor; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(Descriptor); +}; + + +// Describes a single field of a message. To get the descriptor for a given +// field, first get the Descriptor for the message in which it is defined, +// then call Descriptor::FindFieldByName(). To get a FieldDescriptor for +// an extension, do one of the following: +// - Get the Descriptor or FileDescriptor for its containing scope, then +// call Descriptor::FindExtensionByName() or +// FileDescriptor::FindExtensionByName(). +// - Given a DescriptorPool, call DescriptorPool::FindExtensionByNumber(). +// - Given a Reflection for a message object, call +// Reflection::FindKnownExtensionByName() or +// Reflection::FindKnownExtensionByNumber(). +// Use DescriptorPool to construct your own descriptors. +class LIBPROTOBUF_EXPORT FieldDescriptor { + public: + // Identifies a field type. 0 is reserved for errors. The order is weird + // for historical reasons. Types 12 and up are new in proto2. + enum Type { + TYPE_DOUBLE = 1, // double, exactly eight bytes on the wire. + TYPE_FLOAT = 2, // float, exactly four bytes on the wire. + TYPE_INT64 = 3, // int64, varint on the wire. Negative numbers + // take 10 bytes. Use TYPE_SINT64 if negative + // values are likely. + TYPE_UINT64 = 4, // uint64, varint on the wire. + TYPE_INT32 = 5, // int32, varint on the wire. Negative numbers + // take 10 bytes. Use TYPE_SINT32 if negative + // values are likely. + TYPE_FIXED64 = 6, // uint64, exactly eight bytes on the wire. + TYPE_FIXED32 = 7, // uint32, exactly four bytes on the wire. + TYPE_BOOL = 8, // bool, varint on the wire. + TYPE_STRING = 9, // UTF-8 text. + TYPE_GROUP = 10, // Tag-delimited message. Deprecated. + TYPE_MESSAGE = 11, // Length-delimited message. + + TYPE_BYTES = 12, // Arbitrary byte array. + TYPE_UINT32 = 13, // uint32, varint on the wire + TYPE_ENUM = 14, // Enum, varint on the wire + TYPE_SFIXED32 = 15, // int32, exactly four bytes on the wire + TYPE_SFIXED64 = 16, // int64, exactly eight bytes on the wire + TYPE_SINT32 = 17, // int32, ZigZag-encoded varint on the wire + TYPE_SINT64 = 18, // int64, ZigZag-encoded varint on the wire + + MAX_TYPE = 18, // Constant useful for defining lookup tables + // indexed by Type. + }; + + // Specifies the C++ data type used to represent the field. There is a + // fixed mapping from Type to CppType where each Type maps to exactly one + // CppType. 0 is reserved for errors. + enum CppType { + CPPTYPE_INT32 = 1, // TYPE_INT32, TYPE_SINT32, TYPE_SFIXED32 + CPPTYPE_INT64 = 2, // TYPE_INT64, TYPE_SINT64, TYPE_SFIXED64 + CPPTYPE_UINT32 = 3, // TYPE_UINT32, TYPE_FIXED32 + CPPTYPE_UINT64 = 4, // TYPE_UINT64, TYPE_FIXED64 + CPPTYPE_DOUBLE = 5, // TYPE_DOUBLE + CPPTYPE_FLOAT = 6, // TYPE_FLOAT + CPPTYPE_BOOL = 7, // TYPE_BOOL + CPPTYPE_ENUM = 8, // TYPE_ENUM + CPPTYPE_STRING = 9, // TYPE_STRING, TYPE_BYTES + CPPTYPE_MESSAGE = 10, // TYPE_MESSAGE, TYPE_GROUP + + MAX_CPPTYPE = 10, // Constant useful for defining lookup tables + // indexed by CppType. + }; + + // Identifies whether the field is optional, required, or repeated. 0 is + // reserved for errors. + enum Label { + LABEL_OPTIONAL = 1, // optional + LABEL_REQUIRED = 2, // required + LABEL_REPEATED = 3, // repeated + + MAX_LABEL = 3, // Constant useful for defining lookup tables + // indexed by Label. + }; + + // Valid field numbers are positive integers up to kMaxNumber. + static const int kMaxNumber = (1 << 29) - 1; + + // First field number reserved for the protocol buffer library implementation. + // Users may not declare fields that use reserved numbers. + static const int kFirstReservedNumber = 19000; + // Last field number reserved for the protocol buffer library implementation. + // Users may not declare fields that use reserved numbers. + static const int kLastReservedNumber = 19999; + + const string& name() const; // Name of this field within the message. + const string& full_name() const; // Fully-qualified name of the field. + const string& json_name() const; // JSON name of this field. + const FileDescriptor* file() const;// File in which this field was defined. + bool is_extension() const; // Is this an extension field? + int number() const; // Declared tag number. + + // Same as name() except converted to lower-case. This (and especially the + // FindFieldByLowercaseName() method) can be useful when parsing formats + // which prefer to use lowercase naming style. (Although, technically + // field names should be lowercased anyway according to the protobuf style + // guide, so this only makes a difference when dealing with old .proto files + // which do not follow the guide.) + const string& lowercase_name() const; + + // Same as name() except converted to camel-case. In this conversion, any + // time an underscore appears in the name, it is removed and the next + // letter is capitalized. Furthermore, the first letter of the name is + // lower-cased. Examples: + // FooBar -> fooBar + // foo_bar -> fooBar + // fooBar -> fooBar + // This (and especially the FindFieldByCamelcaseName() method) can be useful + // when parsing formats which prefer to use camel-case naming style. + const string& camelcase_name() const; + + Type type() const; // Declared type of this field. + const char* type_name() const; // Name of the declared type. + CppType cpp_type() const; // C++ type of this field. + const char* cpp_type_name() const; // Name of the C++ type. + Label label() const; // optional/required/repeated + + bool is_required() const; // shorthand for label() == LABEL_REQUIRED + bool is_optional() const; // shorthand for label() == LABEL_OPTIONAL + bool is_repeated() const; // shorthand for label() == LABEL_REPEATED + bool is_packable() const; // shorthand for is_repeated() && + // IsTypePackable(type()) + bool is_packed() const; // shorthand for is_packable() && + // options().packed() + bool is_map() const; // shorthand for type() == TYPE_MESSAGE && + // message_type()->options().map_entry() + + // Index of this field within the message's field array, or the file or + // extension scope's extensions array. + int index() const; + + // Does this field have an explicitly-declared default value? + bool has_default_value() const; + + // Whether the user has specified the json_name field option in the .proto + // file. + bool has_json_name() const; + + // Get the field default value if cpp_type() == CPPTYPE_INT32. If no + // explicit default was defined, the default is 0. + int32 default_value_int32() const; + // Get the field default value if cpp_type() == CPPTYPE_INT64. If no + // explicit default was defined, the default is 0. + int64 default_value_int64() const; + // Get the field default value if cpp_type() == CPPTYPE_UINT32. If no + // explicit default was defined, the default is 0. + uint32 default_value_uint32() const; + // Get the field default value if cpp_type() == CPPTYPE_UINT64. If no + // explicit default was defined, the default is 0. + uint64 default_value_uint64() const; + // Get the field default value if cpp_type() == CPPTYPE_FLOAT. If no + // explicit default was defined, the default is 0.0. + float default_value_float() const; + // Get the field default value if cpp_type() == CPPTYPE_DOUBLE. If no + // explicit default was defined, the default is 0.0. + double default_value_double() const; + // Get the field default value if cpp_type() == CPPTYPE_BOOL. If no + // explicit default was defined, the default is false. + bool default_value_bool() const; + // Get the field default value if cpp_type() == CPPTYPE_ENUM. If no + // explicit default was defined, the default is the first value defined + // in the enum type (all enum types are required to have at least one value). + // This never returns NULL. + const EnumValueDescriptor* default_value_enum() const; + // Get the field default value if cpp_type() == CPPTYPE_STRING. If no + // explicit default was defined, the default is the empty string. + const string& default_value_string() const; + + // The Descriptor for the message of which this is a field. For extensions, + // this is the extended type. Never NULL. + const Descriptor* containing_type() const; + + // If the field is a member of a oneof, this is the one, otherwise this is + // NULL. + const OneofDescriptor* containing_oneof() const; + + // If the field is a member of a oneof, returns the index in that oneof. + int index_in_oneof() const; + + // An extension may be declared within the scope of another message. If this + // field is an extension (is_extension() is true), then extension_scope() + // returns that message, or NULL if the extension was declared at global + // scope. If this is not an extension, extension_scope() is undefined (may + // assert-fail). + const Descriptor* extension_scope() const; + + // If type is TYPE_MESSAGE or TYPE_GROUP, returns a descriptor for the + // message or the group type. Otherwise, returns null. + const Descriptor* message_type() const; + // If type is TYPE_ENUM, returns a descriptor for the enum. Otherwise, + // returns null. + const EnumDescriptor* enum_type() const; + + // Get the FieldOptions for this field. This includes things listed in + // square brackets after the field definition. E.g., the field: + // optional string text = 1 [ctype=CORD]; + // has the "ctype" option set. Allowed options are defined by FieldOptions + // in google/protobuf/descriptor.proto, and any available extensions of that + // message. + const FieldOptions& options() const; + + // See Descriptor::CopyTo(). + void CopyTo(FieldDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + string DebugString() const; + + // See Descriptor::DebugStringWithOptions(). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + // Helper method to get the CppType for a particular Type. + static CppType TypeToCppType(Type type); + + // Helper method to get the name of a Type. + static const char* TypeName(Type type); + + // Helper method to get the name of a CppType. + static const char* CppTypeName(CppType cpp_type); + + // Return true iff [packed = true] is valid for fields of this type. + static inline bool IsTypePackable(Type field_type); + + // Source Location --------------------------------------------------- + + // Updates |*out_location| to the source location of the complete + // extent of this field declaration. Returns false and leaves + // |*out_location| unchanged iff location information was not available. + bool GetSourceLocation(SourceLocation* out_location) const; + + private: + typedef FieldOptions OptionsType; + + // Allows access to GetLocationPath for annotations. + friend class ::google::protobuf::io::Printer; + + // Fill the json_name field of FieldDescriptorProto. + void CopyJsonNameTo(FieldDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + enum PrintLabelFlag { PRINT_LABEL, OMIT_LABEL }; + void DebugString(int depth, PrintLabelFlag print_label_flag, + string* contents, const DebugStringOptions& options) const; + + // formats the default value appropriately and returns it as a string. + // Must have a default value to call this. If quote_string_type is true, then + // types of CPPTYPE_STRING whill be surrounded by quotes and CEscaped. + string DefaultValueAsString(bool quote_string_type) const; + + // Helper function that returns the field type name for DebugString. + string FieldTypeNameDebugString() const; + + // Walks up the descriptor tree to generate the source location path + // to this descriptor from the file root. + void GetLocationPath(std::vector<int>* output) const; + + // Returns true if this is a map message type. + bool is_map_message_type() const; + + const string* name_; + const string* full_name_; + const string* lowercase_name_; + const string* camelcase_name_; + // If has_json_name_ is true, it's the value specified by the user. + // Otherwise, it has the same value as camelcase_name_. + const string* json_name_; + const FileDescriptor* file_; + GoogleOnceDynamic* type_once_; + static void TypeOnceInit(const FieldDescriptor* to_init); + void InternalTypeOnceInit() const; + mutable Type type_; + Label label_; + bool has_default_value_; + // Whether the user has specified the json_name field option in the .proto + // file. + bool has_json_name_; + bool is_extension_; + int number_; + int index_in_oneof_; + const Descriptor* containing_type_; + const OneofDescriptor* containing_oneof_; + const Descriptor* extension_scope_; + mutable const Descriptor* message_type_; + mutable const EnumDescriptor* enum_type_; + const FieldOptions* options_; + const string* type_name_; + const string* default_value_enum_name_; + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<FieldDescriptor>() and AllocateArray<FieldDescriptor>() in + // descriptor.cc and update them to initialize the field. + + union { + int32 default_value_int32_; + int64 default_value_int64_; + uint32 default_value_uint32_; + uint64 default_value_uint64_; + float default_value_float_; + double default_value_double_; + bool default_value_bool_; + + mutable const EnumValueDescriptor* default_value_enum_; + const string* default_value_string_; + }; + + static const CppType kTypeToCppTypeMap[MAX_TYPE + 1]; + + static const char * const kTypeToName[MAX_TYPE + 1]; + + static const char * const kCppTypeToName[MAX_CPPTYPE + 1]; + + static const char * const kLabelToName[MAX_LABEL + 1]; + + // Must be constructed using DescriptorPool. + FieldDescriptor() {} + friend class DescriptorBuilder; + friend class FileDescriptor; + friend class Descriptor; + friend class OneofDescriptor; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldDescriptor); +}; + + +// Describes a oneof defined in a message type. +class LIBPROTOBUF_EXPORT OneofDescriptor { + public: + const string& name() const; // Name of this oneof. + const string& full_name() const; // Fully-qualified name of the oneof. + + // Index of this oneof within the message's oneof array. + int index() const; + + // The .proto file in which this oneof was defined. Never NULL. + const FileDescriptor* file() const; + // The Descriptor for the message containing this oneof. + const Descriptor* containing_type() const; + + // The number of (non-extension) fields which are members of this oneof. + int field_count() const; + // Get a member of this oneof, in the order in which they were declared in the + // .proto file. Does not include extensions. + const FieldDescriptor* field(int index) const; + + const OneofOptions& options() const; + + // See Descriptor::CopyTo(). + void CopyTo(OneofDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + string DebugString() const; + + // See Descriptor::DebugStringWithOptions(). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + // Source Location --------------------------------------------------- + + // Updates |*out_location| to the source location of the complete + // extent of this oneof declaration. Returns false and leaves + // |*out_location| unchanged iff location information was not available. + bool GetSourceLocation(SourceLocation* out_location) const; + + private: + typedef OneofOptions OptionsType; + + // Allows access to GetLocationPath for annotations. + friend class ::google::protobuf::io::Printer; + + // See Descriptor::DebugString(). + void DebugString(int depth, string* contents, + const DebugStringOptions& options) const; + + // Walks up the descriptor tree to generate the source location path + // to this descriptor from the file root. + void GetLocationPath(std::vector<int>* output) const; + + const string* name_; + const string* full_name_; + const Descriptor* containing_type_; + bool is_extendable_; + int field_count_; + const FieldDescriptor** fields_; + const OneofOptions* options_; + + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<OneofDescriptor>() and AllocateArray<OneofDescriptor>() + // in descriptor.cc and update them to initialize the field. + + // Must be constructed using DescriptorPool. + OneofDescriptor() {} + friend class DescriptorBuilder; + friend class Descriptor; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(OneofDescriptor); +}; + +// Describes an enum type defined in a .proto file. To get the EnumDescriptor +// for a generated enum type, call TypeName_descriptor(). Use DescriptorPool +// to construct your own descriptors. +class LIBPROTOBUF_EXPORT EnumDescriptor { + public: + // The name of this enum type in the containing scope. + const string& name() const; + + // The fully-qualified name of the enum type, scope delimited by periods. + const string& full_name() const; + + // Index of this enum within the file or containing message's enum array. + int index() const; + + // The .proto file in which this enum type was defined. Never NULL. + const FileDescriptor* file() const; + + // The number of values for this EnumDescriptor. Guaranteed to be greater + // than zero. + int value_count() const; + // Gets a value by index, where 0 <= index < value_count(). + // These are returned in the order they were defined in the .proto file. + const EnumValueDescriptor* value(int index) const; + + // Looks up a value by name. Returns NULL if no such value exists. + const EnumValueDescriptor* FindValueByName(const string& name) const; + // Looks up a value by number. Returns NULL if no such value exists. If + // multiple values have this number, the first one defined is returned. + const EnumValueDescriptor* FindValueByNumber(int number) const; + + // If this enum type is nested in a message type, this is that message type. + // Otherwise, NULL. + const Descriptor* containing_type() const; + + // Get options for this enum type. These are specified in the .proto file by + // placing lines like "option foo = 1234;" in the enum definition. Allowed + // options are defined by EnumOptions in google/protobuf/descriptor.proto, + // and any available extensions of that message. + const EnumOptions& options() const; + + // See Descriptor::CopyTo(). + void CopyTo(EnumDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + string DebugString() const; + + // See Descriptor::DebugStringWithOptions(). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + // Returns true if this is a placeholder for an unknown enum. This will + // only be the case if this descriptor comes from a DescriptorPool + // with AllowUnknownDependencies() set. + bool is_placeholder() const; + + // Reserved fields ------------------------------------------------- + + // A range of reserved field numbers. + struct ReservedRange { + int start; // inclusive + int end; // inclusive + }; + + // The number of reserved ranges in this message type. + int reserved_range_count() const; + // Gets an reserved range by index, where 0 <= index < + // reserved_range_count(). These are returned in the order they were defined + // in the .proto file. + const EnumDescriptor::ReservedRange* reserved_range(int index) const; + + // Returns true if the number is in one of the reserved ranges. + bool IsReservedNumber(int number) const; + + // Returns NULL if no reserved range contains the given number. + const EnumDescriptor::ReservedRange* + FindReservedRangeContainingNumber(int number) const; + + // The number of reserved field names in this message type. + int reserved_name_count() const; + + // Gets a reserved name by index, where 0 <= index < reserved_name_count(). + const string& reserved_name(int index) const; + + // Returns true if the field name is reserved. + bool IsReservedName(const string& name) const; + + // Source Location --------------------------------------------------- + + // Updates |*out_location| to the source location of the complete + // extent of this enum declaration. Returns false and leaves + // |*out_location| unchanged iff location information was not available. + bool GetSourceLocation(SourceLocation* out_location) const; + + private: + typedef EnumOptions OptionsType; + + // Allows access to GetLocationPath for annotations. + friend class ::google::protobuf::io::Printer; + + // Looks up a value by number. If the value does not exist, dynamically + // creates a new EnumValueDescriptor for that value, assuming that it was + // unknown. If a new descriptor is created, this is done in a thread-safe way, + // and future calls will return the same value descriptor pointer. + // + // This is private but is used by GeneratedMessageReflection (which is + // friended below) to return a valid EnumValueDescriptor from GetEnum() when + // this feature is enabled. + const EnumValueDescriptor* + FindValueByNumberCreatingIfUnknown(int number) const; + + + // See Descriptor::DebugString(). + void DebugString(int depth, string *contents, + const DebugStringOptions& options) const; + + // Walks up the descriptor tree to generate the source location path + // to this descriptor from the file root. + void GetLocationPath(std::vector<int>* output) const; + + const string* name_; + const string* full_name_; + const FileDescriptor* file_; + const Descriptor* containing_type_; + const EnumOptions* options_; + + // True if this is a placeholder for an unknown type. + bool is_placeholder_; + // True if this is a placeholder and the type name wasn't fully-qualified. + bool is_unqualified_placeholder_; + + int value_count_; + EnumValueDescriptor* values_; + + int reserved_range_count_; + int reserved_name_count_; + EnumDescriptor::ReservedRange* reserved_ranges_; + const string** reserved_names_; + + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<EnumDescriptor>() and AllocateArray<EnumDescriptor>() in + // descriptor.cc and update them to initialize the field. + + // Must be constructed using DescriptorPool. + EnumDescriptor() {} + friend class DescriptorBuilder; + friend class Descriptor; + friend class FieldDescriptor; + friend class EnumValueDescriptor; + friend class FileDescriptor; + friend class DescriptorPool; + friend class internal::GeneratedMessageReflection; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumDescriptor); +}; + +// Describes an individual enum constant of a particular type. To get the +// EnumValueDescriptor for a given enum value, first get the EnumDescriptor +// for its type, then use EnumDescriptor::FindValueByName() or +// EnumDescriptor::FindValueByNumber(). Use DescriptorPool to construct +// your own descriptors. +class LIBPROTOBUF_EXPORT EnumValueDescriptor { + public: + const string& name() const; // Name of this enum constant. + int index() const; // Index within the enums's Descriptor. + int number() const; // Numeric value of this enum constant. + + // The full_name of an enum value is a sibling symbol of the enum type. + // e.g. the full name of FieldDescriptorProto::TYPE_INT32 is actually + // "google.protobuf.FieldDescriptorProto.TYPE_INT32", NOT + // "google.protobuf.FieldDescriptorProto.Type.TYPE_INT32". This is to conform + // with C++ scoping rules for enums. + const string& full_name() const; + + // The .proto file in which this value was defined. Never NULL. + const FileDescriptor* file() const; + // The type of this value. Never NULL. + const EnumDescriptor* type() const; + + // Get options for this enum value. These are specified in the .proto file + // by adding text like "[foo = 1234]" after an enum value definition. + // Allowed options are defined by EnumValueOptions in + // google/protobuf/descriptor.proto, and any available extensions of that + // message. + const EnumValueOptions& options() const; + + // See Descriptor::CopyTo(). + void CopyTo(EnumValueDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + string DebugString() const; + + // See Descriptor::DebugStringWithOptions(). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + + // Source Location --------------------------------------------------- + + // Updates |*out_location| to the source location of the complete + // extent of this enum value declaration. Returns false and leaves + // |*out_location| unchanged iff location information was not available. + bool GetSourceLocation(SourceLocation* out_location) const; + + private: + typedef EnumValueOptions OptionsType; + + // Allows access to GetLocationPath for annotations. + friend class ::google::protobuf::io::Printer; + + // See Descriptor::DebugString(). + void DebugString(int depth, string *contents, + const DebugStringOptions& options) const; + + // Walks up the descriptor tree to generate the source location path + // to this descriptor from the file root. + void GetLocationPath(std::vector<int>* output) const; + + const string* name_; + const string* full_name_; + int number_; + const EnumDescriptor* type_; + const EnumValueOptions* options_; + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<EnumValueDescriptor>() and AllocateArray<EnumValueDescriptor>() + // in descriptor.cc and update them to initialize the field. + + // Must be constructed using DescriptorPool. + EnumValueDescriptor() {} + friend class DescriptorBuilder; + friend class EnumDescriptor; + friend class DescriptorPool; + friend class FileDescriptorTables; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumValueDescriptor); +}; + +// Describes an RPC service. To get the ServiceDescriptor for a service, +// call Service::GetDescriptor(). Generated service classes also have a +// static method called descriptor() which returns the type's +// ServiceDescriptor. Use DescriptorPool to construct your own descriptors. +class LIBPROTOBUF_EXPORT ServiceDescriptor { + public: + // The name of the service, not including its containing scope. + const string& name() const; + // The fully-qualified name of the service, scope delimited by periods. + const string& full_name() const; + // Index of this service within the file's services array. + int index() const; + + // The .proto file in which this service was defined. Never NULL. + const FileDescriptor* file() const; + + // Get options for this service type. These are specified in the .proto file + // by placing lines like "option foo = 1234;" in the service definition. + // Allowed options are defined by ServiceOptions in + // google/protobuf/descriptor.proto, and any available extensions of that + // message. + const ServiceOptions& options() const; + + // The number of methods this service defines. + int method_count() const; + // Gets a MethodDescriptor by index, where 0 <= index < method_count(). + // These are returned in the order they were defined in the .proto file. + const MethodDescriptor* method(int index) const; + + // Look up a MethodDescriptor by name. + const MethodDescriptor* FindMethodByName(const string& name) const; + // See Descriptor::CopyTo(). + void CopyTo(ServiceDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + string DebugString() const; + + // See Descriptor::DebugStringWithOptions(). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + + // Source Location --------------------------------------------------- + + // Updates |*out_location| to the source location of the complete + // extent of this service declaration. Returns false and leaves + // |*out_location| unchanged iff location information was not available. + bool GetSourceLocation(SourceLocation* out_location) const; + + private: + typedef ServiceOptions OptionsType; + + // Allows access to GetLocationPath for annotations. + friend class ::google::protobuf::io::Printer; + + // See Descriptor::DebugString(). + void DebugString(string *contents, const DebugStringOptions& options) const; + + // Walks up the descriptor tree to generate the source location path + // to this descriptor from the file root. + void GetLocationPath(std::vector<int>* output) const; + + const string* name_; + const string* full_name_; + const FileDescriptor* file_; + const ServiceOptions* options_; + MethodDescriptor* methods_; + int method_count_; + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<ServiceDescriptor>() and AllocateArray<ServiceDescriptor>() in + // descriptor.cc and update them to initialize the field. + + // Must be constructed using DescriptorPool. + ServiceDescriptor() {} + friend class DescriptorBuilder; + friend class FileDescriptor; + friend class MethodDescriptor; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ServiceDescriptor); +}; + + +// Describes an individual service method. To obtain a MethodDescriptor given +// a service, first get its ServiceDescriptor, then call +// ServiceDescriptor::FindMethodByName(). Use DescriptorPool to construct your +// own descriptors. +class LIBPROTOBUF_EXPORT MethodDescriptor { + public: + // Name of this method, not including containing scope. + const string& name() const; + // The fully-qualified name of the method, scope delimited by periods. + const string& full_name() const; + // Index within the service's Descriptor. + int index() const; + + // The .proto file in which this method was defined. Never NULL. + const FileDescriptor* file() const; + // Gets the service to which this method belongs. Never NULL. + const ServiceDescriptor* service() const; + + // Gets the type of protocol message which this method accepts as input. + const Descriptor* input_type() const; + // Gets the type of protocol message which this message produces as output. + const Descriptor* output_type() const; + + // Gets whether the client streams multiple requests. + bool client_streaming() const; + // Gets whether the server streams multiple responses. + bool server_streaming() const; + + // Get options for this method. These are specified in the .proto file by + // placing lines like "option foo = 1234;" in curly-braces after a method + // declaration. Allowed options are defined by MethodOptions in + // google/protobuf/descriptor.proto, and any available extensions of that + // message. + const MethodOptions& options() const; + + // See Descriptor::CopyTo(). + void CopyTo(MethodDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + string DebugString() const; + + // See Descriptor::DebugStringWithOptions(). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + + // Source Location --------------------------------------------------- + + // Updates |*out_location| to the source location of the complete + // extent of this method declaration. Returns false and leaves + // |*out_location| unchanged iff location information was not available. + bool GetSourceLocation(SourceLocation* out_location) const; + + private: + typedef MethodOptions OptionsType; + + // Allows access to GetLocationPath for annotations. + friend class ::google::protobuf::io::Printer; + + // See Descriptor::DebugString(). + void DebugString(int depth, string *contents, + const DebugStringOptions& options) const; + + // Walks up the descriptor tree to generate the source location path + // to this descriptor from the file root. + void GetLocationPath(std::vector<int>* output) const; + + const string* name_; + const string* full_name_; + const ServiceDescriptor* service_; + mutable internal::LazyDescriptor input_type_; + mutable internal::LazyDescriptor output_type_; + const MethodOptions* options_; + bool client_streaming_; + bool server_streaming_; + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<MethodDescriptor>() and AllocateArray<MethodDescriptor>() in + // descriptor.cc and update them to initialize the field. + + // Must be constructed using DescriptorPool. + MethodDescriptor() {} + friend class DescriptorBuilder; + friend class ServiceDescriptor; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MethodDescriptor); +}; + + +// Describes a whole .proto file. To get the FileDescriptor for a compiled-in +// file, get the descriptor for something defined in that file and call +// descriptor->file(). Use DescriptorPool to construct your own descriptors. +class LIBPROTOBUF_EXPORT FileDescriptor { + public: + // The filename, relative to the source tree. + // e.g. "google/protobuf/descriptor.proto" + const string& name() const; + + // The package, e.g. "google.protobuf.compiler". + const string& package() const; + + // The DescriptorPool in which this FileDescriptor and all its contents were + // allocated. Never NULL. + const DescriptorPool* pool() const; + + // The number of files imported by this one. + int dependency_count() const; + // Gets an imported file by index, where 0 <= index < dependency_count(). + // These are returned in the order they were defined in the .proto file. + const FileDescriptor* dependency(int index) const; + + // The number of files public imported by this one. + // The public dependency list is a subset of the dependency list. + int public_dependency_count() const; + // Gets a public imported file by index, where 0 <= index < + // public_dependency_count(). + // These are returned in the order they were defined in the .proto file. + const FileDescriptor* public_dependency(int index) const; + + // The number of files that are imported for weak fields. + // The weak dependency list is a subset of the dependency list. + int weak_dependency_count() const; + // Gets a weak imported file by index, where 0 <= index < + // weak_dependency_count(). + // These are returned in the order they were defined in the .proto file. + const FileDescriptor* weak_dependency(int index) const; + + // Number of top-level message types defined in this file. (This does not + // include nested types.) + int message_type_count() const; + // Gets a top-level message type, where 0 <= index < message_type_count(). + // These are returned in the order they were defined in the .proto file. + const Descriptor* message_type(int index) const; + + // Number of top-level enum types defined in this file. (This does not + // include nested types.) + int enum_type_count() const; + // Gets a top-level enum type, where 0 <= index < enum_type_count(). + // These are returned in the order they were defined in the .proto file. + const EnumDescriptor* enum_type(int index) const; + + // Number of services defined in this file. + int service_count() const; + // Gets a service, where 0 <= index < service_count(). + // These are returned in the order they were defined in the .proto file. + const ServiceDescriptor* service(int index) const; + + // Number of extensions defined at file scope. (This does not include + // extensions nested within message types.) + int extension_count() const; + // Gets an extension's descriptor, where 0 <= index < extension_count(). + // These are returned in the order they were defined in the .proto file. + const FieldDescriptor* extension(int index) const; + + // Get options for this file. These are specified in the .proto file by + // placing lines like "option foo = 1234;" at the top level, outside of any + // other definitions. Allowed options are defined by FileOptions in + // google/protobuf/descriptor.proto, and any available extensions of that + // message. + const FileOptions& options() const; + + // Syntax of this file. + enum Syntax { + SYNTAX_UNKNOWN = 0, + SYNTAX_PROTO2 = 2, + SYNTAX_PROTO3 = 3, + }; + Syntax syntax() const; + static const char* SyntaxName(Syntax syntax); + + // Find a top-level message type by name. Returns NULL if not found. + const Descriptor* FindMessageTypeByName(const string& name) const; + // Find a top-level enum type by name. Returns NULL if not found. + const EnumDescriptor* FindEnumTypeByName(const string& name) const; + // Find an enum value defined in any top-level enum by name. Returns NULL if + // not found. + const EnumValueDescriptor* FindEnumValueByName(const string& name) const; + // Find a service definition by name. Returns NULL if not found. + const ServiceDescriptor* FindServiceByName(const string& name) const; + // Find a top-level extension definition by name. Returns NULL if not found. + const FieldDescriptor* FindExtensionByName(const string& name) const; + // Similar to FindExtensionByName(), but searches by lowercased-name. See + // Descriptor::FindFieldByLowercaseName(). + const FieldDescriptor* FindExtensionByLowercaseName(const string& name) const; + // Similar to FindExtensionByName(), but searches by camelcased-name. See + // Descriptor::FindFieldByCamelcaseName(). + const FieldDescriptor* FindExtensionByCamelcaseName(const string& name) const; + + // See Descriptor::CopyTo(). + // Notes: + // - This method does NOT copy source code information since it is relatively + // large and rarely needed. See CopySourceCodeInfoTo() below. + void CopyTo(FileDescriptorProto* proto) const; + // Write the source code information of this FileDescriptor into the given + // FileDescriptorProto. See CopyTo() above. + void CopySourceCodeInfoTo(FileDescriptorProto* proto) const; + // Fill the json_name field of FieldDescriptorProto for all fields. Can only + // be called after CopyTo(). + void CopyJsonNameTo(FileDescriptorProto* proto) const; + + // See Descriptor::DebugString(). + string DebugString() const; + + // See Descriptor::DebugStringWithOptions(). + string DebugStringWithOptions(const DebugStringOptions& options) const; + + // Returns true if this is a placeholder for an unknown file. This will + // only be the case if this descriptor comes from a DescriptorPool + // with AllowUnknownDependencies() set. + bool is_placeholder() const; + + // Updates |*out_location| to the source location of the complete extent of + // this file declaration (namely, the empty path). + bool GetSourceLocation(SourceLocation* out_location) const; + + // Updates |*out_location| to the source location of the complete + // extent of the declaration or declaration-part denoted by |path|. + // Returns false and leaves |*out_location| unchanged iff location + // information was not available. (See SourceCodeInfo for + // description of path encoding.) + bool GetSourceLocation(const std::vector<int>& path, + SourceLocation* out_location) const; + + private: + typedef FileOptions OptionsType; + + const string* name_; + const string* package_; + const DescriptorPool* pool_; + GoogleOnceDynamic* dependencies_once_; + static void DependenciesOnceInit(const FileDescriptor* to_init); + void InternalDependenciesOnceInit() const; + + // These are arranged to minimze padding on 64-bit. + int dependency_count_; + int public_dependency_count_; + int weak_dependency_count_; + int message_type_count_; + int enum_type_count_; + int service_count_; + int extension_count_; + Syntax syntax_; + bool is_placeholder_; + + // Indicates the FileDescriptor is completed building. Used to verify + // that type accessor functions that can possibly build a dependent file + // aren't called during the process of building the file. + bool finished_building_; + + mutable const FileDescriptor** dependencies_; + const string** dependencies_names_; + int* public_dependencies_; + int* weak_dependencies_; + Descriptor* message_types_; + EnumDescriptor* enum_types_; + ServiceDescriptor* services_; + FieldDescriptor* extensions_; + const FileOptions* options_; + + const FileDescriptorTables* tables_; + const SourceCodeInfo* source_code_info_; + + // IMPORTANT: If you add a new field, make sure to search for all instances + // of Allocate<FileDescriptor>() and AllocateArray<FileDescriptor>() in + // descriptor.cc and update them to initialize the field. + + FileDescriptor() {} + friend class DescriptorBuilder; + friend class DescriptorPool; + friend class Descriptor; + friend class FieldDescriptor; + friend class internal::LazyDescriptor; + friend class OneofDescriptor; + friend class EnumDescriptor; + friend class EnumValueDescriptor; + friend class MethodDescriptor; + friend class ServiceDescriptor; + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FileDescriptor); +}; + + +// =================================================================== + +// Used to construct descriptors. +// +// Normally you won't want to build your own descriptors. Message classes +// constructed by the protocol compiler will provide them for you. However, +// if you are implementing Message on your own, or if you are writing a +// program which can operate on totally arbitrary types and needs to load +// them from some sort of database, you might need to. +// +// Since Descriptors are composed of a whole lot of cross-linked bits of +// data that would be a pain to put together manually, the +// DescriptorPool class is provided to make the process easier. It can +// take a FileDescriptorProto (defined in descriptor.proto), validate it, +// and convert it to a set of nicely cross-linked Descriptors. +// +// DescriptorPool also helps with memory management. Descriptors are +// composed of many objects containing static data and pointers to each +// other. In all likelihood, when it comes time to delete this data, +// you'll want to delete it all at once. In fact, it is not uncommon to +// have a whole pool of descriptors all cross-linked with each other which +// you wish to delete all at once. This class represents such a pool, and +// handles the memory management for you. +// +// You can also search for descriptors within a DescriptorPool by name, and +// extensions by number. +class LIBPROTOBUF_EXPORT DescriptorPool { + public: + // Create a normal, empty DescriptorPool. + DescriptorPool(); + + // Constructs a DescriptorPool that, when it can't find something among the + // descriptors already in the pool, looks for it in the given + // DescriptorDatabase. + // Notes: + // - If a DescriptorPool is constructed this way, its BuildFile*() methods + // must not be called (they will assert-fail). The only way to populate + // the pool with descriptors is to call the Find*By*() methods. + // - The Find*By*() methods may block the calling thread if the + // DescriptorDatabase blocks. This in turn means that parsing messages + // may block if they need to look up extensions. + // - The Find*By*() methods will use mutexes for thread-safety, thus making + // them slower even when they don't have to fall back to the database. + // In fact, even the Find*By*() methods of descriptor objects owned by + // this pool will be slower, since they will have to obtain locks too. + // - An ErrorCollector may optionally be given to collect validation errors + // in files loaded from the database. If not given, errors will be printed + // to GOOGLE_LOG(ERROR). Remember that files are built on-demand, so this + // ErrorCollector may be called from any thread that calls one of the + // Find*By*() methods. + // - The DescriptorDatabase must not be mutated during the lifetime of + // the DescriptorPool. Even if the client takes care to avoid data races, + // changes to the content of the DescriptorDatabase may not be reflected + // in subsequent lookups in the DescriptorPool. + class ErrorCollector; + explicit DescriptorPool(DescriptorDatabase* fallback_database, + ErrorCollector* error_collector = NULL); + + ~DescriptorPool(); + + // Get a pointer to the generated pool. Generated protocol message classes + // which are compiled into the binary will allocate their descriptors in + // this pool. Do not add your own descriptors to this pool. + static const DescriptorPool* generated_pool(); + + + // Find a FileDescriptor in the pool by file name. Returns NULL if not + // found. + const FileDescriptor* FindFileByName(const string& name) const; + + // Find the FileDescriptor in the pool which defines the given symbol. + // If any of the Find*ByName() methods below would succeed, then this is + // equivalent to calling that method and calling the result's file() method. + // Otherwise this returns NULL. + const FileDescriptor* FindFileContainingSymbol( + const string& symbol_name) const; + + // Looking up descriptors ------------------------------------------ + // These find descriptors by fully-qualified name. These will find both + // top-level descriptors and nested descriptors. They return NULL if not + // found. + + const Descriptor* FindMessageTypeByName(const string& name) const; + const FieldDescriptor* FindFieldByName(const string& name) const; + const FieldDescriptor* FindExtensionByName(const string& name) const; + const OneofDescriptor* FindOneofByName(const string& name) const; + const EnumDescriptor* FindEnumTypeByName(const string& name) const; + const EnumValueDescriptor* FindEnumValueByName(const string& name) const; + const ServiceDescriptor* FindServiceByName(const string& name) const; + const MethodDescriptor* FindMethodByName(const string& name) const; + + // Finds an extension of the given type by number. The extendee must be + // a member of this DescriptorPool or one of its underlays. + const FieldDescriptor* FindExtensionByNumber(const Descriptor* extendee, + int number) const; + + // Finds extensions of extendee. The extensions will be appended to + // out in an undefined order. Only extensions defined directly in + // this DescriptorPool or one of its underlays are guaranteed to be + // found: extensions defined in the fallback database might not be found + // depending on the database implementation. + void FindAllExtensions(const Descriptor* extendee, + std::vector<const FieldDescriptor*>* out) const; + + // Building descriptors -------------------------------------------- + + // When converting a FileDescriptorProto to a FileDescriptor, various + // errors might be detected in the input. The caller may handle these + // programmatically by implementing an ErrorCollector. + class LIBPROTOBUF_EXPORT ErrorCollector { + public: + inline ErrorCollector() {} + virtual ~ErrorCollector(); + + // These constants specify what exact part of the construct is broken. + // This is useful e.g. for mapping the error back to an exact location + // in a .proto file. + enum ErrorLocation { + NAME, // the symbol name, or the package name for files + NUMBER, // field or extension range number + TYPE, // field type + EXTENDEE, // field extendee + DEFAULT_VALUE, // field default value + INPUT_TYPE, // method input type + OUTPUT_TYPE, // method output type + OPTION_NAME, // name in assignment + OPTION_VALUE, // value in option assignment + OTHER // some other problem + }; + + // Reports an error in the FileDescriptorProto. Use this function if the + // problem occurred should interrupt building the FileDescriptorProto. + virtual void AddError( + const string& filename, // File name in which the error occurred. + const string& element_name, // Full name of the erroneous element. + const Message* descriptor, // Descriptor of the erroneous element. + ErrorLocation location, // One of the location constants, above. + const string& message // Human-readable error message. + ) = 0; + + // Reports a warning in the FileDescriptorProto. Use this function if the + // problem occurred should NOT interrupt building the FileDescriptorProto. + virtual void AddWarning( + const string& /*filename*/, // File name in which the error occurred. + const string& /*element_name*/, // Full name of the erroneous element. + const Message* /*descriptor*/, // Descriptor of the erroneous element. + ErrorLocation /*location*/, // One of the location constants, above. + const string& /*message*/ // Human-readable error message. + ) {} + + private: + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ErrorCollector); + }; + + // Convert the FileDescriptorProto to real descriptors and place them in + // this DescriptorPool. All dependencies of the file must already be in + // the pool. Returns the resulting FileDescriptor, or NULL if there were + // problems with the input (e.g. the message was invalid, or dependencies + // were missing). Details about the errors are written to GOOGLE_LOG(ERROR). + const FileDescriptor* BuildFile(const FileDescriptorProto& proto); + + // Same as BuildFile() except errors are sent to the given ErrorCollector. + const FileDescriptor* BuildFileCollectingErrors( + const FileDescriptorProto& proto, + ErrorCollector* error_collector); + + // By default, it is an error if a FileDescriptorProto contains references + // to types or other files that are not found in the DescriptorPool (or its + // backing DescriptorDatabase, if any). If you call + // AllowUnknownDependencies(), however, then unknown types and files + // will be replaced by placeholder descriptors (which can be identified by + // the is_placeholder() method). This can allow you to + // perform some useful operations with a .proto file even if you do not + // have access to other .proto files on which it depends. However, some + // heuristics must be used to fill in the gaps in information, and these + // can lead to descriptors which are inaccurate. For example, the + // DescriptorPool may be forced to guess whether an unknown type is a message + // or an enum, as well as what package it resides in. Furthermore, + // placeholder types will not be discoverable via FindMessageTypeByName() + // and similar methods, which could confuse some descriptor-based algorithms. + // Generally, the results of this option should be handled with extreme care. + void AllowUnknownDependencies() { allow_unknown_ = true; } + + // By default, weak imports are allowed to be missing, in which case we will + // use a placeholder for the dependency and convert the field to be an Empty + // message field. If you call EnforceWeakDependencies(true), however, the + // DescriptorPool will report a import not found error. + void EnforceWeakDependencies(bool enforce) { enforce_weak_ = enforce; } + + // Internal stuff -------------------------------------------------- + // These methods MUST NOT be called from outside the proto2 library. + // These methods may contain hidden pitfalls and may be removed in a + // future library version. + + // Create a DescriptorPool which is overlaid on top of some other pool. + // If you search for a descriptor in the overlay and it is not found, the + // underlay will be searched as a backup. If the underlay has its own + // underlay, that will be searched next, and so on. This also means that + // files built in the overlay will be cross-linked with the underlay's + // descriptors if necessary. The underlay remains property of the caller; + // it must remain valid for the lifetime of the newly-constructed pool. + // + // Example: Say you want to parse a .proto file at runtime in order to use + // its type with a DynamicMessage. Say this .proto file has dependencies, + // but you know that all the dependencies will be things that are already + // compiled into the binary. For ease of use, you'd like to load the types + // right out of generated_pool() rather than have to parse redundant copies + // of all these .protos and runtime. But, you don't want to add the parsed + // types directly into generated_pool(): this is not allowed, and would be + // bad design anyway. So, instead, you could use generated_pool() as an + // underlay for a new DescriptorPool in which you add only the new file. + // + // WARNING: Use of underlays can lead to many subtle gotchas. Instead, + // try to formulate what you want to do in terms of DescriptorDatabases. + explicit DescriptorPool(const DescriptorPool* underlay); + + // Called by generated classes at init time to add their descriptors to + // generated_pool. Do NOT call this in your own code! filename must be a + // permanent string (e.g. a string literal). + static void InternalAddGeneratedFile( + const void* encoded_file_descriptor, int size); + + // Disallow [enforce_utf8 = false] in .proto files. + void DisallowEnforceUtf8() { disallow_enforce_utf8_ = true; } + + + // For internal use only: Gets a non-const pointer to the generated pool. + // This is called at static-initialization time only, so thread-safety is + // not a concern. If both an underlay and a fallback database are present, + // the underlay takes precedence. + static DescriptorPool* internal_generated_pool(); + + // For internal use only: Changes the behavior of BuildFile() such that it + // allows the file to make reference to message types declared in other files + // which it did not officially declare as dependencies. + void InternalDontEnforceDependencies(); + + // For internal use only: Enables lazy building of dependencies of a file. + // Delay the building of dependencies of a file descriptor until absolutely + // necessary, like when message_type() is called on a field that is defined + // in that dependency's file. This will cause functional issues if a proto + // or one of it's dependencies has errors. Should only be enabled for the + // generated_pool_ (because no descriptor build errors are guaranteed by + // the compilation generation process), testing, or if a lack of descriptor + // build errors can be guaranteed for a pool. + void InternalSetLazilyBuildDependencies() { + lazily_build_dependencies_ = true; + // This needs to be set when lazily building dependencies, as it breaks + // dependency checking. + InternalDontEnforceDependencies(); + } + + // For internal use only. + void internal_set_underlay(const DescriptorPool* underlay) { + underlay_ = underlay; + } + + // For internal (unit test) use only: Returns true if a FileDescriptor has + // been constructed for the given file, false otherwise. Useful for testing + // lazy descriptor initialization behavior. + bool InternalIsFileLoaded(const string& filename) const; + + + // Add a file to unused_import_track_files_. DescriptorBuilder will log + // warnings for those files if there is any unused import. + void AddUnusedImportTrackFile(const string& file_name); + void ClearUnusedImportTrackFiles(); + + private: + friend class Descriptor; + friend class internal::LazyDescriptor; + friend class FieldDescriptor; + friend class EnumDescriptor; + friend class ServiceDescriptor; + friend class MethodDescriptor; + friend class FileDescriptor; + friend class StreamDescriptor; + friend class DescriptorBuilder; + friend class FileDescriptorTables; + + // Return true if the given name is a sub-symbol of any non-package + // descriptor that already exists in the descriptor pool. (The full + // definition of such types is already known.) + bool IsSubSymbolOfBuiltType(const string& name) const; + + // Tries to find something in the fallback database and link in the + // corresponding proto file. Returns true if successful, in which case + // the caller should search for the thing again. These are declared + // const because they are called by (semantically) const methods. + bool TryFindFileInFallbackDatabase(const string& name) const; + bool TryFindSymbolInFallbackDatabase(const string& name) const; + bool TryFindExtensionInFallbackDatabase(const Descriptor* containing_type, + int field_number) const; + + // Like BuildFile() but called internally when the file has been loaded from + // fallback_database_. Declared const because it is called by (semantically) + // const methods. + const FileDescriptor* BuildFileFromDatabase( + const FileDescriptorProto& proto) const; + + // Helper for when lazily_build_dependencies_ is set, can look up a symbol + // after the file's descriptor is built, and can build the file where that + // symbol is defined if necessary. Will create a placeholder if the type + // doesn't exist in the fallback database, or the file doesn't build + // successfully. + Symbol CrossLinkOnDemandHelper(const string& name, bool expecting_enum) const; + + // Create a placeholder FileDescriptor of the specified name + FileDescriptor* NewPlaceholderFile(const string& name) const; + FileDescriptor* NewPlaceholderFileWithMutexHeld(const string& name) const; + + enum PlaceholderType { + PLACEHOLDER_MESSAGE, + PLACEHOLDER_ENUM, + PLACEHOLDER_EXTENDABLE_MESSAGE + }; + // Create a placeholder Descriptor of the specified name + Symbol NewPlaceholder(const string& name, + PlaceholderType placeholder_type) const; + Symbol NewPlaceholderWithMutexHeld(const string& name, + PlaceholderType placeholder_type) const; + + // If fallback_database_ is NULL, this is NULL. Otherwise, this is a mutex + // which must be locked while accessing tables_. + Mutex* mutex_; + + // See constructor. + DescriptorDatabase* fallback_database_; + ErrorCollector* default_error_collector_; + const DescriptorPool* underlay_; + + // This class contains a lot of hash maps with complicated types that + // we'd like to keep out of the header. + class Tables; + std::unique_ptr<Tables> tables_; + + bool enforce_dependencies_; + bool lazily_build_dependencies_; + bool allow_unknown_; + bool enforce_weak_; + bool disallow_enforce_utf8_; + std::set<string> unused_import_track_files_; + + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(DescriptorPool); +}; + + +// inline methods ==================================================== + +// These macros makes this repetitive code more readable. +#define PROTOBUF_DEFINE_ACCESSOR(CLASS, FIELD, TYPE) \ + inline TYPE CLASS::FIELD() const { return FIELD##_; } + +// Strings fields are stored as pointers but returned as const references. +#define PROTOBUF_DEFINE_STRING_ACCESSOR(CLASS, FIELD) \ + inline const string& CLASS::FIELD() const { return *FIELD##_; } + +// Arrays take an index parameter, obviously. +#define PROTOBUF_DEFINE_ARRAY_ACCESSOR(CLASS, FIELD, TYPE) \ + inline TYPE CLASS::FIELD(int index) const { return FIELD##s_ + index; } + +#define PROTOBUF_DEFINE_OPTIONS_ACCESSOR(CLASS, TYPE) \ + inline const TYPE& CLASS::options() const { return *options_; } + +PROTOBUF_DEFINE_STRING_ACCESSOR(Descriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(Descriptor, full_name) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, file, const FileDescriptor*) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, containing_type, const Descriptor*) + +PROTOBUF_DEFINE_ACCESSOR(Descriptor, field_count, int) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, oneof_decl_count, int) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, nested_type_count, int) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, enum_type_count, int) + +PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, field, const FieldDescriptor*) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, oneof_decl, const OneofDescriptor*) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, nested_type, const Descriptor*) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, enum_type, const EnumDescriptor*) + +PROTOBUF_DEFINE_ACCESSOR(Descriptor, extension_range_count, int) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, extension_count, int) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, extension_range, + const Descriptor::ExtensionRange*) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, extension, + const FieldDescriptor*) + +PROTOBUF_DEFINE_ACCESSOR(Descriptor, reserved_range_count, int) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, reserved_range, + const Descriptor::ReservedRange*) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, reserved_name_count, int) + +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(Descriptor, MessageOptions) +PROTOBUF_DEFINE_ACCESSOR(Descriptor, is_placeholder, bool) + +PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, full_name) +PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, json_name) +PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, lowercase_name) +PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, camelcase_name) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, file, const FileDescriptor*) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, number, int) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, is_extension, bool) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, label, FieldDescriptor::Label) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, containing_type, const Descriptor*) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, containing_oneof, + const OneofDescriptor*) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, index_in_oneof, int) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, extension_scope, const Descriptor*) +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(FieldDescriptor, FieldOptions) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, has_default_value, bool) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, has_json_name, bool) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_int32 , int32 ) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_int64 , int64 ) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_uint32, uint32) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_uint64, uint64) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_float , float ) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_double, double) +PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_bool , bool ) +PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, default_value_string) + +PROTOBUF_DEFINE_STRING_ACCESSOR(OneofDescriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(OneofDescriptor, full_name) +PROTOBUF_DEFINE_ACCESSOR(OneofDescriptor, containing_type, const Descriptor*) +PROTOBUF_DEFINE_ACCESSOR(OneofDescriptor, field_count, int) +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(OneofDescriptor, OneofOptions) + +PROTOBUF_DEFINE_STRING_ACCESSOR(EnumDescriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(EnumDescriptor, full_name) +PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, file, const FileDescriptor*) +PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, containing_type, const Descriptor*) +PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, value_count, int) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(EnumDescriptor, value, + const EnumValueDescriptor*) +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(EnumDescriptor, EnumOptions) +PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, is_placeholder, bool) +PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, reserved_range_count, int) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(EnumDescriptor, reserved_range, + const EnumDescriptor::ReservedRange*) +PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, reserved_name_count, int) + +PROTOBUF_DEFINE_STRING_ACCESSOR(EnumValueDescriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(EnumValueDescriptor, full_name) +PROTOBUF_DEFINE_ACCESSOR(EnumValueDescriptor, number, int) +PROTOBUF_DEFINE_ACCESSOR(EnumValueDescriptor, type, const EnumDescriptor*) +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(EnumValueDescriptor, EnumValueOptions) + +PROTOBUF_DEFINE_STRING_ACCESSOR(ServiceDescriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(ServiceDescriptor, full_name) +PROTOBUF_DEFINE_ACCESSOR(ServiceDescriptor, file, const FileDescriptor*) +PROTOBUF_DEFINE_ACCESSOR(ServiceDescriptor, method_count, int) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(ServiceDescriptor, method, + const MethodDescriptor*) +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(ServiceDescriptor, ServiceOptions) + +PROTOBUF_DEFINE_STRING_ACCESSOR(MethodDescriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(MethodDescriptor, full_name) +PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, service, const ServiceDescriptor*) +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(MethodDescriptor, MethodOptions) +PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, client_streaming, bool) +PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, server_streaming, bool) + +PROTOBUF_DEFINE_STRING_ACCESSOR(FileDescriptor, name) +PROTOBUF_DEFINE_STRING_ACCESSOR(FileDescriptor, package) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, pool, const DescriptorPool*) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, dependency_count, int) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, public_dependency_count, int) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, weak_dependency_count, int) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, message_type_count, int) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, enum_type_count, int) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, service_count, int) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, extension_count, int) +PROTOBUF_DEFINE_OPTIONS_ACCESSOR(FileDescriptor, FileOptions) +PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, is_placeholder, bool) + +PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, message_type, const Descriptor*) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, enum_type, const EnumDescriptor*) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, service, + const ServiceDescriptor*) +PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, extension, + const FieldDescriptor*) + +#undef PROTOBUF_DEFINE_ACCESSOR +#undef PROTOBUF_DEFINE_STRING_ACCESSOR +#undef PROTOBUF_DEFINE_ARRAY_ACCESSOR + +// A few accessors differ from the macros... + +inline bool Descriptor::IsExtensionNumber(int number) const { + return FindExtensionRangeContainingNumber(number) != NULL; +} + +inline bool Descriptor::IsReservedNumber(int number) const { + return FindReservedRangeContainingNumber(number) != NULL; +} + +inline bool Descriptor::IsReservedName(const string& name) const { + for (int i = 0; i < reserved_name_count(); i++) { + if (name == reserved_name(i)) { + return true; + } + } + return false; +} + +// Can't use PROTOBUF_DEFINE_ARRAY_ACCESSOR because reserved_names_ is actually +// an array of pointers rather than the usual array of objects. +inline const string& Descriptor::reserved_name(int index) const { + return *reserved_names_[index]; +} + +inline bool EnumDescriptor::IsReservedNumber(int number) const { + return FindReservedRangeContainingNumber(number) != NULL; +} + +inline bool EnumDescriptor::IsReservedName(const string& name) const { + for (int i = 0; i < reserved_name_count(); i++) { + if (name == reserved_name(i)) { + return true; + } + } + return false; +} + +// Can't use PROTOBUF_DEFINE_ARRAY_ACCESSOR because reserved_names_ is actually +// an array of pointers rather than the usual array of objects. +inline const string& EnumDescriptor::reserved_name(int index) const { + return *reserved_names_[index]; +} + +inline FieldDescriptor::Type FieldDescriptor::type() const { + if (type_once_) { + type_once_->Init(&FieldDescriptor::TypeOnceInit, this); + } + return type_; +} + +inline bool FieldDescriptor::is_required() const { + return label() == LABEL_REQUIRED; +} + +inline bool FieldDescriptor::is_optional() const { + return label() == LABEL_OPTIONAL; +} + +inline bool FieldDescriptor::is_repeated() const { + return label() == LABEL_REPEATED; +} + +inline bool FieldDescriptor::is_packable() const { + return is_repeated() && IsTypePackable(type()); +} + +inline bool FieldDescriptor::is_map() const { + return type() == TYPE_MESSAGE && is_map_message_type(); +} + +// To save space, index() is computed by looking at the descriptor's position +// in the parent's array of children. +inline int FieldDescriptor::index() const { + if (!is_extension_) { + return static_cast<int>(this - containing_type()->fields_); + } else if (extension_scope_ != NULL) { + return static_cast<int>(this - extension_scope_->extensions_); + } else { + return static_cast<int>(this - file_->extensions_); + } +} + +inline int Descriptor::index() const { + if (containing_type_ == NULL) { + return static_cast<int>(this - file_->message_types_); + } else { + return static_cast<int>(this - containing_type_->nested_types_); + } +} + +inline const FileDescriptor* OneofDescriptor::file() const { + return containing_type()->file(); +} + +inline int OneofDescriptor::index() const { + return static_cast<int>(this - containing_type_->oneof_decls_); +} + +inline int EnumDescriptor::index() const { + if (containing_type_ == NULL) { + return static_cast<int>(this - file_->enum_types_); + } else { + return static_cast<int>(this - containing_type_->enum_types_); + } +} + +inline const FileDescriptor* EnumValueDescriptor::file() const { + return type()->file(); +} + +inline int EnumValueDescriptor::index() const { + return static_cast<int>(this - type_->values_); +} + +inline int ServiceDescriptor::index() const { + return static_cast<int>(this - file_->services_); +} + +inline const FileDescriptor* MethodDescriptor::file() const { + return service()->file(); +} + +inline int MethodDescriptor::index() const { + return static_cast<int>(this - service_->methods_); +} + +inline const char* FieldDescriptor::type_name() const { + return kTypeToName[type()]; +} + +inline FieldDescriptor::CppType FieldDescriptor::cpp_type() const { + return kTypeToCppTypeMap[type()]; +} + +inline const char* FieldDescriptor::cpp_type_name() const { + return kCppTypeToName[kTypeToCppTypeMap[type()]]; +} + +inline FieldDescriptor::CppType FieldDescriptor::TypeToCppType(Type type) { + return kTypeToCppTypeMap[type]; +} + +inline const char* FieldDescriptor::TypeName(Type type) { + return kTypeToName[type]; +} + +inline const char* FieldDescriptor::CppTypeName(CppType cpp_type) { + return kCppTypeToName[cpp_type]; +} + +inline bool FieldDescriptor::IsTypePackable(Type field_type) { + return (field_type != FieldDescriptor::TYPE_STRING && + field_type != FieldDescriptor::TYPE_GROUP && + field_type != FieldDescriptor::TYPE_MESSAGE && + field_type != FieldDescriptor::TYPE_BYTES); +} + +inline const FileDescriptor* FileDescriptor::public_dependency( + int index) const { + return dependency(public_dependencies_[index]); +} + +inline const FileDescriptor* FileDescriptor::weak_dependency( + int index) const { + return dependency(weak_dependencies_[index]); +} + +inline FileDescriptor::Syntax FileDescriptor::syntax() const { + return syntax_; +} + +// Can't use PROTOBUF_DEFINE_ARRAY_ACCESSOR because fields_ is actually an array +// of pointers rather than the usual array of objects. +inline const FieldDescriptor* OneofDescriptor::field(int index) const { + return fields_[index]; +} + +} // namespace protobuf + +} // namespace google +#endif // GOOGLE_PROTOBUF_DESCRIPTOR_H__ |