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// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// http://code.google.com/p/protobuf/
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Author: kenton@google.com (Kenton Varda)
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// Based on original Protocol Buffers design by
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// Sanjay Ghemawat, Jeff Dean, and others.
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// This file contains classes which describe a type of protocol message.
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// You can use a message's descriptor to learn at runtime what fields
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// it contains and what the types of those fields are. The Message
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// interface also allows you to dynamically access and modify individual
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// fields by passing the FieldDescriptor of the field you are interested
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// Most users will not care about descriptors, because they will write
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// code specific to certain protocol types and will simply use the classes
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// generated by the protocol compiler directly. Advanced users who want
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// to operate on arbitrary types (not known at compile time) may want to
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// read descriptors in order to learn about the contents of a message.
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// A very small number of users will want to construct their own
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// Descriptors, either because they are implementing Message manually or
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// because they are writing something like the protocol compiler.
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// For an example of how you might use descriptors, see the code example
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// at the top of message.h.
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#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_H__
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#define GOOGLE_PROTOBUF_DESCRIPTOR_H__
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#include <google/protobuf/stubs/common.h>
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// TYPE_BOOL is defined in the MacOS's ConditionalMacros.h.
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// Defined in this file.
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class FieldDescriptor;
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class EnumValueDescriptor;
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class ServiceDescriptor;
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class MethodDescriptor;
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class DescriptorDatabase;
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// Defined in descriptor.proto
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class DescriptorProto;
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class FieldDescriptorProto;
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class EnumDescriptorProto;
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class EnumValueDescriptorProto;
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class ServiceDescriptorProto;
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class MethodDescriptorProto;
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class FileDescriptorProto;
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class EnumValueOptions;
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class UninterpretedOption;
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// Defined in message.h
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// Defined in descriptor.cc
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class DescriptorBuilder;
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class FileDescriptorTables;
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// Defined in unknown_field_set.h.
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// NB, all indices are zero-based.
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struct SourceLocation {
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// Doc comments found at the source location.
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// TODO(kenton): Maybe this struct should have been named SourceInfo or
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// something instead. Oh well.
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string leading_comments;
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string trailing_comments;
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// Describes a type of protocol message, or a particular group within a
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// message. To obtain the Descriptor for a given message object, call
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// Message::GetDescriptor(). Generated message classes also have a
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// static method called descriptor() which returns the type's descriptor.
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// Use DescriptorPool to construct your own descriptors.
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class LIBPROTOBUF_EXPORT Descriptor {
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// The name of the message type, not including its scope.
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const string& name() const;
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// The fully-qualified name of the message type, scope delimited by
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// periods. For example, message type "Foo" which is declared in package
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// "bar" has full name "bar.Foo". If a type "Baz" is nested within
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// Foo, Baz's full_name is "bar.Foo.Baz". To get only the part that
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// comes after the last '.', use name().
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const string& full_name() const;
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// Index of this descriptor within the file or containing type's message
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// The .proto file in which this message type was defined. Never NULL.
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const FileDescriptor* file() const;
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// If this Descriptor describes a nested type, this returns the type
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// in which it is nested. Otherwise, returns NULL.
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const Descriptor* containing_type() const;
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// Get options for this message type. These are specified in the .proto file
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// by placing lines like "option foo = 1234;" in the message definition.
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// Allowed options are defined by MessageOptions in
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// google/protobuf/descriptor.proto, and any available extensions of that
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const MessageOptions& options() const;
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// Write the contents of this Descriptor into the given DescriptorProto.
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// The target DescriptorProto must be clear before calling this; if it
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// isn't, the result may be garbage.
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void CopyTo(DescriptorProto* proto) const;
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// Write the contents of this decriptor in a human-readable form. Output
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// will be suitable for re-parsing.
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string DebugString() const;
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// Field stuff -----------------------------------------------------
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// The number of fields in this message type.
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int field_count() const;
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// Gets a field by index, where 0 <= index < field_count().
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// These are returned in the order they were defined in the .proto file.
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const FieldDescriptor* field(int index) const;
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// Looks up a field by declared tag number. Returns NULL if no such field
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const FieldDescriptor* FindFieldByNumber(int number) const;
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// Looks up a field by name. Returns NULL if no such field exists.
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const FieldDescriptor* FindFieldByName(const string& name) const;
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// Looks up a field by lowercased name (as returned by lowercase_name()).
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// This lookup may be ambiguous if multiple field names differ only by case,
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// in which case the field returned is chosen arbitrarily from the matches.
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const FieldDescriptor* FindFieldByLowercaseName(
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const string& lowercase_name) const;
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// Looks up a field by camel-case name (as returned by camelcase_name()).
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// This lookup may be ambiguous if multiple field names differ in a way that
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// leads them to have identical camel-case names, in which case the field
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// returned is chosen arbitrarily from the matches.
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const FieldDescriptor* FindFieldByCamelcaseName(
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const string& camelcase_name) const;
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// Nested type stuff -----------------------------------------------
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// The number of nested types in this message type.
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int nested_type_count() const;
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// Gets a nested type by index, where 0 <= index < nested_type_count().
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// These are returned in the order they were defined in the .proto file.
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const Descriptor* nested_type(int index) const;
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// Looks up a nested type by name. Returns NULL if no such nested type
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const Descriptor* FindNestedTypeByName(const string& name) const;
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// Enum stuff ------------------------------------------------------
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// The number of enum types in this message type.
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int enum_type_count() const;
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// Gets an enum type by index, where 0 <= index < enum_type_count().
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// These are returned in the order they were defined in the .proto file.
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const EnumDescriptor* enum_type(int index) const;
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// Looks up an enum type by name. Returns NULL if no such enum type exists.
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const EnumDescriptor* FindEnumTypeByName(const string& name) const;
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// Looks up an enum value by name, among all enum types in this message.
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// Returns NULL if no such value exists.
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const EnumValueDescriptor* FindEnumValueByName(const string& name) const;
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// Extensions ------------------------------------------------------
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// A range of field numbers which are designated for third-party
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struct ExtensionRange {
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int start; // inclusive
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int end; // exclusive
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// The number of extension ranges in this message type.
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int extension_range_count() const;
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// Gets an extension range by index, where 0 <= index <
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// extension_range_count(). These are returned in the order they were defined
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// in the .proto file.
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const ExtensionRange* extension_range(int index) const;
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// Returns true if the number is in one of the extension ranges.
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bool IsExtensionNumber(int number) const;
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// The number of extensions -- extending *other* messages -- that were
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// defined nested within this message type's scope.
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int extension_count() const;
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// Get an extension by index, where 0 <= index < extension_count().
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// These are returned in the order they were defined in the .proto file.
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const FieldDescriptor* extension(int index) const;
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// Looks up a named extension (which extends some *other* message type)
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// defined within this message type's scope.
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const FieldDescriptor* FindExtensionByName(const string& name) const;
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// Similar to FindFieldByLowercaseName(), but finds extensions defined within
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// this message type's scope.
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const FieldDescriptor* FindExtensionByLowercaseName(const string& name) const;
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// Similar to FindFieldByCamelcaseName(), but finds extensions defined within
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// this message type's scope.
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const FieldDescriptor* FindExtensionByCamelcaseName(const string& name) const;
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// Source Location ---------------------------------------------------
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// Updates |*out_location| to the source location of the complete
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// extent of this message declaration. Returns false and leaves
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// |*out_location| unchanged iff location information was not available.
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bool GetSourceLocation(SourceLocation* out_location) const;
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typedef MessageOptions OptionsType;
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// Internal version of DebugString; controls the level of indenting for
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void DebugString(int depth, string *contents) const;
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// Walks up the descriptor tree to generate the source location path
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// to this descriptor from the file root.
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void GetLocationPath(vector<int>* output) const;
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const string* full_name_;
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const FileDescriptor* file_;
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const Descriptor* containing_type_;
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const MessageOptions* options_;
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// True if this is a placeholder for an unknown type.
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bool is_placeholder_;
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// True if this is a placeholder and the type name wasn't fully-qualified.
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bool is_unqualified_placeholder_;
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FieldDescriptor* fields_;
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int nested_type_count_;
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Descriptor* nested_types_;
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int enum_type_count_;
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EnumDescriptor* enum_types_;
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int extension_range_count_;
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ExtensionRange* extension_ranges_;
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int extension_count_;
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FieldDescriptor* extensions_;
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// IMPORTANT: If you add a new field, make sure to search for all instances
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// of Allocate<Descriptor>() and AllocateArray<Descriptor>() in descriptor.cc
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// and update them to initialize the field.
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// Must be constructed using DescriptorPool.
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friend class DescriptorBuilder;
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friend class EnumDescriptor;
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friend class FieldDescriptor;
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friend class MethodDescriptor;
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friend class FileDescriptor;
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GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(Descriptor);
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// Describes a single field of a message. To get the descriptor for a given
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// field, first get the Descriptor for the message in which it is defined,
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// then call Descriptor::FindFieldByName(). To get a FieldDescriptor for
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// an extension, do one of the following:
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// - Get the Descriptor or FileDescriptor for its containing scope, then
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// call Descriptor::FindExtensionByName() or
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// FileDescriptor::FindExtensionByName().
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// - Given a DescriptorPool, call DescriptorPool::FindExtensionByNumber().
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// - Given a Reflection for a message object, call
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// Reflection::FindKnownExtensionByName() or
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// Reflection::FindKnownExtensionByNumber().
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// Use DescriptorPool to construct your own descriptors.
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class LIBPROTOBUF_EXPORT FieldDescriptor {
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// Identifies a field type. 0 is reserved for errors. The order is weird
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// for historical reasons. Types 12 and up are new in proto2.
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TYPE_DOUBLE = 1, // double, exactly eight bytes on the wire.
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TYPE_FLOAT = 2, // float, exactly four bytes on the wire.
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TYPE_INT64 = 3, // int64, varint on the wire. Negative numbers
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// take 10 bytes. Use TYPE_SINT64 if negative
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// values are likely.
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TYPE_UINT64 = 4, // uint64, varint on the wire.
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TYPE_INT32 = 5, // int32, varint on the wire. Negative numbers
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// take 10 bytes. Use TYPE_SINT32 if negative
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// values are likely.
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TYPE_FIXED64 = 6, // uint64, exactly eight bytes on the wire.
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TYPE_FIXED32 = 7, // uint32, exactly four bytes on the wire.
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TYPE_BOOL = 8, // bool, varint on the wire.
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TYPE_STRING = 9, // UTF-8 text.
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TYPE_GROUP = 10, // Tag-delimited message. Deprecated.
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TYPE_MESSAGE = 11, // Length-delimited message.
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TYPE_BYTES = 12, // Arbitrary byte array.
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TYPE_UINT32 = 13, // uint32, varint on the wire
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TYPE_ENUM = 14, // Enum, varint on the wire
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TYPE_SFIXED32 = 15, // int32, exactly four bytes on the wire
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TYPE_SFIXED64 = 16, // int64, exactly eight bytes on the wire
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TYPE_SINT32 = 17, // int32, ZigZag-encoded varint on the wire
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TYPE_SINT64 = 18, // int64, ZigZag-encoded varint on the wire
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MAX_TYPE = 18, // Constant useful for defining lookup tables
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// Specifies the C++ data type used to represent the field. There is a
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// fixed mapping from Type to CppType where each Type maps to exactly one
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// CppType. 0 is reserved for errors.
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CPPTYPE_INT32 = 1, // TYPE_INT32, TYPE_SINT32, TYPE_SFIXED32
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CPPTYPE_INT64 = 2, // TYPE_INT64, TYPE_SINT64, TYPE_SFIXED64
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CPPTYPE_UINT32 = 3, // TYPE_UINT32, TYPE_FIXED32
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CPPTYPE_UINT64 = 4, // TYPE_UINT64, TYPE_FIXED64
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CPPTYPE_DOUBLE = 5, // TYPE_DOUBLE
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CPPTYPE_FLOAT = 6, // TYPE_FLOAT
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CPPTYPE_BOOL = 7, // TYPE_BOOL
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CPPTYPE_ENUM = 8, // TYPE_ENUM
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CPPTYPE_STRING = 9, // TYPE_STRING, TYPE_BYTES
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CPPTYPE_MESSAGE = 10, // TYPE_MESSAGE, TYPE_GROUP
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MAX_CPPTYPE = 10, // Constant useful for defining lookup tables
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// indexed by CppType.
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// Identifies whether the field is optional, required, or repeated. 0 is
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// reserved for errors.
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LABEL_OPTIONAL = 1, // optional
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LABEL_REQUIRED = 2, // required
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LABEL_REPEATED = 3, // repeated
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MAX_LABEL = 3, // Constant useful for defining lookup tables
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// Valid field numbers are positive integers up to kMaxNumber.
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static const int kMaxNumber = (1 << 29) - 1;
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// First field number reserved for the protocol buffer library implementation.
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// Users may not declare fields that use reserved numbers.
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static const int kFirstReservedNumber = 19000;
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// Last field number reserved for the protocol buffer library implementation.
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// Users may not declare fields that use reserved numbers.
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static const int kLastReservedNumber = 19999;
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const string& name() const; // Name of this field within the message.
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const string& full_name() const; // Fully-qualified name of the field.
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const FileDescriptor* file() const;// File in which this field was defined.
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bool is_extension() const; // Is this an extension field?
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int number() const; // Declared tag number.
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// Same as name() except converted to lower-case. This (and especially the
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// FindFieldByLowercaseName() method) can be useful when parsing formats
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// which prefer to use lowercase naming style. (Although, technically
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// field names should be lowercased anyway according to the protobuf style
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// guide, so this only makes a difference when dealing with old .proto files
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// which do not follow the guide.)
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const string& lowercase_name() const;
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// Same as name() except converted to camel-case. In this conversion, any
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// time an underscore appears in the name, it is removed and the next
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// letter is capitalized. Furthermore, the first letter of the name is
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// lower-cased. Examples:
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// This (and especially the FindFieldByCamelcaseName() method) can be useful
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// when parsing formats which prefer to use camel-case naming style.
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const string& camelcase_name() const;
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Type type() const; // Declared type of this field.
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const char* type_name() const; // Name of the declared type.
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CppType cpp_type() const; // C++ type of this field.
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const char* cpp_type_name() const; // Name of the C++ type.
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Label label() const; // optional/required/repeated
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bool is_required() const; // shorthand for label() == LABEL_REQUIRED
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bool is_optional() const; // shorthand for label() == LABEL_OPTIONAL
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bool is_repeated() const; // shorthand for label() == LABEL_REPEATED
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bool is_packable() const; // shorthand for is_repeated() &&
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// IsTypePackable(type())
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bool is_packed() const; // shorthand for is_packable() &&
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// options().packed()
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// Index of this field within the message's field array, or the file or
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// extension scope's extensions array.
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// Does this field have an explicitly-declared default value?
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bool has_default_value() const;
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// Get the field default value if cpp_type() == CPPTYPE_INT32. If no
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// explicit default was defined, the default is 0.
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int32 default_value_int32() const;
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// Get the field default value if cpp_type() == CPPTYPE_INT64. If no
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// explicit default was defined, the default is 0.
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int64 default_value_int64() const;
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// Get the field default value if cpp_type() == CPPTYPE_UINT32. If no
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// explicit default was defined, the default is 0.
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uint32 default_value_uint32() const;
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// Get the field default value if cpp_type() == CPPTYPE_UINT64. If no
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// explicit default was defined, the default is 0.
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uint64 default_value_uint64() const;
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// Get the field default value if cpp_type() == CPPTYPE_FLOAT. If no
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// explicit default was defined, the default is 0.0.
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float default_value_float() const;
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// Get the field default value if cpp_type() == CPPTYPE_DOUBLE. If no
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// explicit default was defined, the default is 0.0.
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double default_value_double() const;
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// Get the field default value if cpp_type() == CPPTYPE_BOOL. If no
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// explicit default was defined, the default is false.
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bool default_value_bool() const;
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// Get the field default value if cpp_type() == CPPTYPE_ENUM. If no
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// explicit default was defined, the default is the first value defined
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// in the enum type (all enum types are required to have at least one value).
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// This never returns NULL.
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const EnumValueDescriptor* default_value_enum() const;
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// Get the field default value if cpp_type() == CPPTYPE_STRING. If no
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// explicit default was defined, the default is the empty string.
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const string& default_value_string() const;
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// The Descriptor for the message of which this is a field. For extensions,
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// this is the extended type. Never NULL.
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const Descriptor* containing_type() const;
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// An extension may be declared within the scope of another message. If this
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// field is an extension (is_extension() is true), then extension_scope()
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// returns that message, or NULL if the extension was declared at global
479
// scope. If this is not an extension, extension_scope() is undefined (may
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const Descriptor* extension_scope() const;
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// If type is TYPE_MESSAGE or TYPE_GROUP, returns a descriptor for the
484
// message or the group type. Otherwise, undefined.
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const Descriptor* message_type() const;
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// If type is TYPE_ENUM, returns a descriptor for the enum. Otherwise,
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const EnumDescriptor* enum_type() const;
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// EXPERIMENTAL; DO NOT USE.
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// If this field is a map field, experimental_map_key() is the field
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// that is the key for this map.
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// experimental_map_key()->containing_type() is the same as message_type().
494
const FieldDescriptor* experimental_map_key() const;
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// Get the FieldOptions for this field. This includes things listed in
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// square brackets after the field definition. E.g., the field:
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// optional string text = 1 [ctype=CORD];
499
// has the "ctype" option set. Allowed options are defined by FieldOptions
500
// in google/protobuf/descriptor.proto, and any available extensions of that
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const FieldOptions& options() const;
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// See Descriptor::CopyTo().
505
void CopyTo(FieldDescriptorProto* proto) const;
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// See Descriptor::DebugString().
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string DebugString() const;
510
// Helper method to get the CppType for a particular Type.
511
static CppType TypeToCppType(Type type);
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// Return true iff [packed = true] is valid for fields of this type.
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static inline bool IsTypePackable(Type field_type);
516
// Source Location ---------------------------------------------------
518
// Updates |*out_location| to the source location of the complete
519
// extent of this field declaration. Returns false and leaves
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// |*out_location| unchanged iff location information was not available.
521
bool GetSourceLocation(SourceLocation* out_location) const;
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typedef FieldOptions OptionsType;
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// See Descriptor::DebugString().
527
void DebugString(int depth, string *contents) const;
529
// formats the default value appropriately and returns it as a string.
530
// Must have a default value to call this. If quote_string_type is true, then
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// types of CPPTYPE_STRING whill be surrounded by quotes and CEscaped.
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string DefaultValueAsString(bool quote_string_type) const;
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// Walks up the descriptor tree to generate the source location path
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// to this descriptor from the file root.
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void GetLocationPath(vector<int>* output) const;
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const string* full_name_;
540
const string* lowercase_name_;
541
const string* camelcase_name_;
542
const FileDescriptor* file_;
547
const Descriptor* containing_type_;
548
const Descriptor* extension_scope_;
549
const Descriptor* message_type_;
550
const EnumDescriptor* enum_type_;
551
const FieldDescriptor* experimental_map_key_;
552
const FieldOptions* options_;
553
// IMPORTANT: If you add a new field, make sure to search for all instances
554
// of Allocate<FieldDescriptor>() and AllocateArray<FieldDescriptor>() in
555
// descriptor.cc and update them to initialize the field.
557
bool has_default_value_;
559
int32 default_value_int32_;
560
int64 default_value_int64_;
561
uint32 default_value_uint32_;
562
uint64 default_value_uint64_;
563
float default_value_float_;
564
double default_value_double_;
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bool default_value_bool_;
567
const EnumValueDescriptor* default_value_enum_;
568
const string* default_value_string_;
571
static const CppType kTypeToCppTypeMap[MAX_TYPE + 1];
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static const char * const kTypeToName[MAX_TYPE + 1];
575
static const char * const kCppTypeToName[MAX_CPPTYPE + 1];
577
static const char * const kLabelToName[MAX_LABEL + 1];
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// Must be constructed using DescriptorPool.
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friend class DescriptorBuilder;
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friend class FileDescriptor;
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friend class Descriptor;
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GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldDescriptor);
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// Describes an enum type defined in a .proto file. To get the EnumDescriptor
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// for a generated enum type, call TypeName_descriptor(). Use DescriptorPool
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// to construct your own descriptors.
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class LIBPROTOBUF_EXPORT EnumDescriptor {
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// The name of this enum type in the containing scope.
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const string& name() const;
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// The fully-qualified name of the enum type, scope delimited by periods.
596
const string& full_name() const;
598
// Index of this enum within the file or containing message's enum array.
601
// The .proto file in which this enum type was defined. Never NULL.
602
const FileDescriptor* file() const;
604
// The number of values for this EnumDescriptor. Guaranteed to be greater
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int value_count() const;
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// Gets a value by index, where 0 <= index < value_count().
608
// These are returned in the order they were defined in the .proto file.
609
const EnumValueDescriptor* value(int index) const;
611
// Looks up a value by name. Returns NULL if no such value exists.
612
const EnumValueDescriptor* FindValueByName(const string& name) const;
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// Looks up a value by number. Returns NULL if no such value exists. If
614
// multiple values have this number, the first one defined is returned.
615
const EnumValueDescriptor* FindValueByNumber(int number) const;
617
// If this enum type is nested in a message type, this is that message type.
619
const Descriptor* containing_type() const;
621
// Get options for this enum type. These are specified in the .proto file by
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// placing lines like "option foo = 1234;" in the enum definition. Allowed
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// options are defined by EnumOptions in google/protobuf/descriptor.proto,
624
// and any available extensions of that message.
625
const EnumOptions& options() const;
627
// See Descriptor::CopyTo().
628
void CopyTo(EnumDescriptorProto* proto) const;
630
// See Descriptor::DebugString().
631
string DebugString() const;
633
// Source Location ---------------------------------------------------
635
// Updates |*out_location| to the source location of the complete
636
// extent of this enum declaration. Returns false and leaves
637
// |*out_location| unchanged iff location information was not available.
638
bool GetSourceLocation(SourceLocation* out_location) const;
641
typedef EnumOptions OptionsType;
643
// See Descriptor::DebugString().
644
void DebugString(int depth, string *contents) const;
646
// Walks up the descriptor tree to generate the source location path
647
// to this descriptor from the file root.
648
void GetLocationPath(vector<int>* output) const;
651
const string* full_name_;
652
const FileDescriptor* file_;
653
const Descriptor* containing_type_;
654
const EnumOptions* options_;
656
// True if this is a placeholder for an unknown type.
657
bool is_placeholder_;
658
// True if this is a placeholder and the type name wasn't fully-qualified.
659
bool is_unqualified_placeholder_;
662
EnumValueDescriptor* values_;
663
// IMPORTANT: If you add a new field, make sure to search for all instances
664
// of Allocate<EnumDescriptor>() and AllocateArray<EnumDescriptor>() in
665
// descriptor.cc and update them to initialize the field.
667
// Must be constructed using DescriptorPool.
669
friend class DescriptorBuilder;
670
friend class Descriptor;
671
friend class FieldDescriptor;
672
friend class EnumValueDescriptor;
673
friend class FileDescriptor;
674
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumDescriptor);
677
// Describes an individual enum constant of a particular type. To get the
678
// EnumValueDescriptor for a given enum value, first get the EnumDescriptor
679
// for its type, then use EnumDescriptor::FindValueByName() or
680
// EnumDescriptor::FindValueByNumber(). Use DescriptorPool to construct
681
// your own descriptors.
682
class LIBPROTOBUF_EXPORT EnumValueDescriptor {
684
const string& name() const; // Name of this enum constant.
685
int index() const; // Index within the enums's Descriptor.
686
int number() const; // Numeric value of this enum constant.
688
// The full_name of an enum value is a sibling symbol of the enum type.
689
// e.g. the full name of FieldDescriptorProto::TYPE_INT32 is actually
690
// "google.protobuf.FieldDescriptorProto.TYPE_INT32", NOT
691
// "google.protobuf.FieldDescriptorProto.Type.TYPE_INT32". This is to conform
692
// with C++ scoping rules for enums.
693
const string& full_name() const;
695
// The type of this value. Never NULL.
696
const EnumDescriptor* type() const;
698
// Get options for this enum value. These are specified in the .proto file
699
// by adding text like "[foo = 1234]" after an enum value definition.
700
// Allowed options are defined by EnumValueOptions in
701
// google/protobuf/descriptor.proto, and any available extensions of that
703
const EnumValueOptions& options() const;
705
// See Descriptor::CopyTo().
706
void CopyTo(EnumValueDescriptorProto* proto) const;
708
// See Descriptor::DebugString().
709
string DebugString() const;
711
// Source Location ---------------------------------------------------
713
// Updates |*out_location| to the source location of the complete
714
// extent of this enum value declaration. Returns false and leaves
715
// |*out_location| unchanged iff location information was not available.
716
bool GetSourceLocation(SourceLocation* out_location) const;
719
typedef EnumValueOptions OptionsType;
721
// See Descriptor::DebugString().
722
void DebugString(int depth, string *contents) const;
724
// Walks up the descriptor tree to generate the source location path
725
// to this descriptor from the file root.
726
void GetLocationPath(vector<int>* output) const;
729
const string* full_name_;
731
const EnumDescriptor* type_;
732
const EnumValueOptions* options_;
733
// IMPORTANT: If you add a new field, make sure to search for all instances
734
// of Allocate<EnumValueDescriptor>() and AllocateArray<EnumValueDescriptor>()
735
// in descriptor.cc and update them to initialize the field.
737
// Must be constructed using DescriptorPool.
738
EnumValueDescriptor() {}
739
friend class DescriptorBuilder;
740
friend class EnumDescriptor;
741
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumValueDescriptor);
744
// Describes an RPC service. To get the ServiceDescriptor for a service,
745
// call Service::GetDescriptor(). Generated service classes also have a
746
// static method called descriptor() which returns the type's
747
// ServiceDescriptor. Use DescriptorPool to construct your own descriptors.
748
class LIBPROTOBUF_EXPORT ServiceDescriptor {
750
// The name of the service, not including its containing scope.
751
const string& name() const;
752
// The fully-qualified name of the service, scope delimited by periods.
753
const string& full_name() const;
754
// Index of this service within the file's services array.
757
// The .proto file in which this service was defined. Never NULL.
758
const FileDescriptor* file() const;
760
// Get options for this service type. These are specified in the .proto file
761
// by placing lines like "option foo = 1234;" in the service definition.
762
// Allowed options are defined by ServiceOptions in
763
// google/protobuf/descriptor.proto, and any available extensions of that
765
const ServiceOptions& options() const;
767
// The number of methods this service defines.
768
int method_count() const;
769
// Gets a MethodDescriptor by index, where 0 <= index < method_count().
770
// These are returned in the order they were defined in the .proto file.
771
const MethodDescriptor* method(int index) const;
773
// Look up a MethodDescriptor by name.
774
const MethodDescriptor* FindMethodByName(const string& name) const;
775
// See Descriptor::CopyTo().
776
void CopyTo(ServiceDescriptorProto* proto) const;
778
// See Descriptor::DebugString().
779
string DebugString() const;
781
// Source Location ---------------------------------------------------
783
// Updates |*out_location| to the source location of the complete
784
// extent of this service declaration. Returns false and leaves
785
// |*out_location| unchanged iff location information was not available.
786
bool GetSourceLocation(SourceLocation* out_location) const;
789
typedef ServiceOptions OptionsType;
791
// See Descriptor::DebugString().
792
void DebugString(string *contents) const;
794
// Walks up the descriptor tree to generate the source location path
795
// to this descriptor from the file root.
796
void GetLocationPath(vector<int>* output) const;
799
const string* full_name_;
800
const FileDescriptor* file_;
801
const ServiceOptions* options_;
803
MethodDescriptor* methods_;
804
// IMPORTANT: If you add a new field, make sure to search for all instances
805
// of Allocate<ServiceDescriptor>() and AllocateArray<ServiceDescriptor>() in
806
// descriptor.cc and update them to initialize the field.
808
// Must be constructed using DescriptorPool.
809
ServiceDescriptor() {}
810
friend class DescriptorBuilder;
811
friend class FileDescriptor;
812
friend class MethodDescriptor;
813
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ServiceDescriptor);
816
// Describes an individual service method. To obtain a MethodDescriptor given
817
// a service, first get its ServiceDescriptor, then call
818
// ServiceDescriptor::FindMethodByName(). Use DescriptorPool to construct your
820
class LIBPROTOBUF_EXPORT MethodDescriptor {
822
// Name of this method, not including containing scope.
823
const string& name() const;
824
// The fully-qualified name of the method, scope delimited by periods.
825
const string& full_name() const;
826
// Index within the service's Descriptor.
829
// Gets the service to which this method belongs. Never NULL.
830
const ServiceDescriptor* service() const;
832
// Gets the type of protocol message which this method accepts as input.
833
const Descriptor* input_type() const;
834
// Gets the type of protocol message which this message produces as output.
835
const Descriptor* output_type() const;
837
// Get options for this method. These are specified in the .proto file by
838
// placing lines like "option foo = 1234;" in curly-braces after a method
839
// declaration. Allowed options are defined by MethodOptions in
840
// google/protobuf/descriptor.proto, and any available extensions of that
842
const MethodOptions& options() const;
844
// See Descriptor::CopyTo().
845
void CopyTo(MethodDescriptorProto* proto) const;
847
// See Descriptor::DebugString().
848
string DebugString() const;
850
// Source Location ---------------------------------------------------
852
// Updates |*out_location| to the source location of the complete
853
// extent of this method declaration. Returns false and leaves
854
// |*out_location| unchanged iff location information was not available.
855
bool GetSourceLocation(SourceLocation* out_location) const;
858
typedef MethodOptions OptionsType;
860
// See Descriptor::DebugString().
861
void DebugString(int depth, string *contents) const;
863
// Walks up the descriptor tree to generate the source location path
864
// to this descriptor from the file root.
865
void GetLocationPath(vector<int>* output) const;
868
const string* full_name_;
869
const ServiceDescriptor* service_;
870
const Descriptor* input_type_;
871
const Descriptor* output_type_;
872
const MethodOptions* options_;
873
// IMPORTANT: If you add a new field, make sure to search for all instances
874
// of Allocate<MethodDescriptor>() and AllocateArray<MethodDescriptor>() in
875
// descriptor.cc and update them to initialize the field.
877
// Must be constructed using DescriptorPool.
878
MethodDescriptor() {}
879
friend class DescriptorBuilder;
880
friend class ServiceDescriptor;
881
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MethodDescriptor);
885
// Describes a whole .proto file. To get the FileDescriptor for a compiled-in
886
// file, get the descriptor for something defined in that file and call
887
// descriptor->file(). Use DescriptorPool to construct your own descriptors.
888
class LIBPROTOBUF_EXPORT FileDescriptor {
890
// The filename, relative to the source tree.
891
// e.g. "google/protobuf/descriptor.proto"
892
const string& name() const;
894
// The package, e.g. "google.protobuf.compiler".
895
const string& package() const;
897
// The DescriptorPool in which this FileDescriptor and all its contents were
898
// allocated. Never NULL.
899
const DescriptorPool* pool() const;
901
// The number of files imported by this one.
902
int dependency_count() const;
903
// Gets an imported file by index, where 0 <= index < dependency_count().
904
// These are returned in the order they were defined in the .proto file.
905
const FileDescriptor* dependency(int index) const;
907
// The number of files public imported by this one.
908
// The public dependency list is a subset of the dependency list.
909
int public_dependency_count() const;
910
// Gets a public imported file by index, where 0 <= index <
911
// public_dependency_count().
912
// These are returned in the order they were defined in the .proto file.
913
const FileDescriptor* public_dependency(int index) const;
915
// The number of files that are imported for weak fields.
916
// The weak dependency list is a subset of the dependency list.
917
int weak_dependency_count() const;
918
// Gets a weak imported file by index, where 0 <= index <
919
// weak_dependency_count().
920
// These are returned in the order they were defined in the .proto file.
921
const FileDescriptor* weak_dependency(int index) const;
923
// Number of top-level message types defined in this file. (This does not
924
// include nested types.)
925
int message_type_count() const;
926
// Gets a top-level message type, where 0 <= index < message_type_count().
927
// These are returned in the order they were defined in the .proto file.
928
const Descriptor* message_type(int index) const;
930
// Number of top-level enum types defined in this file. (This does not
931
// include nested types.)
932
int enum_type_count() const;
933
// Gets a top-level enum type, where 0 <= index < enum_type_count().
934
// These are returned in the order they were defined in the .proto file.
935
const EnumDescriptor* enum_type(int index) const;
937
// Number of services defined in this file.
938
int service_count() const;
939
// Gets a service, where 0 <= index < service_count().
940
// These are returned in the order they were defined in the .proto file.
941
const ServiceDescriptor* service(int index) const;
943
// Number of extensions defined at file scope. (This does not include
944
// extensions nested within message types.)
945
int extension_count() const;
946
// Gets an extension's descriptor, where 0 <= index < extension_count().
947
// These are returned in the order they were defined in the .proto file.
948
const FieldDescriptor* extension(int index) const;
950
// Get options for this file. These are specified in the .proto file by
951
// placing lines like "option foo = 1234;" at the top level, outside of any
952
// other definitions. Allowed options are defined by FileOptions in
953
// google/protobuf/descriptor.proto, and any available extensions of that
955
const FileOptions& options() const;
957
// Find a top-level message type by name. Returns NULL if not found.
958
const Descriptor* FindMessageTypeByName(const string& name) const;
959
// Find a top-level enum type by name. Returns NULL if not found.
960
const EnumDescriptor* FindEnumTypeByName(const string& name) const;
961
// Find an enum value defined in any top-level enum by name. Returns NULL if
963
const EnumValueDescriptor* FindEnumValueByName(const string& name) const;
964
// Find a service definition by name. Returns NULL if not found.
965
const ServiceDescriptor* FindServiceByName(const string& name) const;
966
// Find a top-level extension definition by name. Returns NULL if not found.
967
const FieldDescriptor* FindExtensionByName(const string& name) const;
968
// Similar to FindExtensionByName(), but searches by lowercased-name. See
969
// Descriptor::FindFieldByLowercaseName().
970
const FieldDescriptor* FindExtensionByLowercaseName(const string& name) const;
971
// Similar to FindExtensionByName(), but searches by camelcased-name. See
972
// Descriptor::FindFieldByCamelcaseName().
973
const FieldDescriptor* FindExtensionByCamelcaseName(const string& name) const;
975
// See Descriptor::CopyTo().
977
// - This method does NOT copy source code information since it is relatively
978
// large and rarely needed. See CopySourceCodeInfoTo() below.
979
void CopyTo(FileDescriptorProto* proto) const;
980
// Write the source code information of this FileDescriptor into the given
981
// FileDescriptorProto. See CopyTo() above.
982
void CopySourceCodeInfoTo(FileDescriptorProto* proto) const;
984
// See Descriptor::DebugString().
985
string DebugString() const;
988
// Source Location ---------------------------------------------------
990
// Updates |*out_location| to the source location of the complete
991
// extent of the declaration or declaration-part denoted by |path|.
992
// Returns false and leaves |*out_location| unchanged iff location
993
// information was not available. (See SourceCodeInfo for
994
// description of path encoding.)
995
bool GetSourceLocation(const vector<int>& path,
996
SourceLocation* out_location) const;
998
typedef FileOptions OptionsType;
1000
const string* name_;
1001
const string* package_;
1002
const DescriptorPool* pool_;
1003
int dependency_count_;
1004
const FileDescriptor** dependencies_;
1005
int public_dependency_count_;
1006
int* public_dependencies_;
1007
int weak_dependency_count_;
1008
int* weak_dependencies_;
1009
int message_type_count_;
1010
Descriptor* message_types_;
1011
int enum_type_count_;
1012
EnumDescriptor* enum_types_;
1014
ServiceDescriptor* services_;
1015
int extension_count_;
1016
FieldDescriptor* extensions_;
1017
const FileOptions* options_;
1019
const FileDescriptorTables* tables_;
1020
const SourceCodeInfo* source_code_info_;
1021
// IMPORTANT: If you add a new field, make sure to search for all instances
1022
// of Allocate<FileDescriptor>() and AllocateArray<FileDescriptor>() in
1023
// descriptor.cc and update them to initialize the field.
1026
friend class DescriptorBuilder;
1027
friend class Descriptor;
1028
friend class FieldDescriptor;
1029
friend class EnumDescriptor;
1030
friend class EnumValueDescriptor;
1031
friend class MethodDescriptor;
1032
friend class ServiceDescriptor;
1033
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FileDescriptor);
1036
// ===================================================================
1038
// Used to construct descriptors.
1040
// Normally you won't want to build your own descriptors. Message classes
1041
// constructed by the protocol compiler will provide them for you. However,
1042
// if you are implementing Message on your own, or if you are writing a
1043
// program which can operate on totally arbitrary types and needs to load
1044
// them from some sort of database, you might need to.
1046
// Since Descriptors are composed of a whole lot of cross-linked bits of
1047
// data that would be a pain to put together manually, the
1048
// DescriptorPool class is provided to make the process easier. It can
1049
// take a FileDescriptorProto (defined in descriptor.proto), validate it,
1050
// and convert it to a set of nicely cross-linked Descriptors.
1052
// DescriptorPool also helps with memory management. Descriptors are
1053
// composed of many objects containing static data and pointers to each
1054
// other. In all likelihood, when it comes time to delete this data,
1055
// you'll want to delete it all at once. In fact, it is not uncommon to
1056
// have a whole pool of descriptors all cross-linked with each other which
1057
// you wish to delete all at once. This class represents such a pool, and
1058
// handles the memory management for you.
1060
// You can also search for descriptors within a DescriptorPool by name, and
1061
// extensions by number.
1062
class LIBPROTOBUF_EXPORT DescriptorPool {
1064
// Create a normal, empty DescriptorPool.
1067
// Constructs a DescriptorPool that, when it can't find something among the
1068
// descriptors already in the pool, looks for it in the given
1069
// DescriptorDatabase.
1071
// - If a DescriptorPool is constructed this way, its BuildFile*() methods
1072
// must not be called (they will assert-fail). The only way to populate
1073
// the pool with descriptors is to call the Find*By*() methods.
1074
// - The Find*By*() methods may block the calling thread if the
1075
// DescriptorDatabase blocks. This in turn means that parsing messages
1076
// may block if they need to look up extensions.
1077
// - The Find*By*() methods will use mutexes for thread-safety, thus making
1078
// them slower even when they don't have to fall back to the database.
1079
// In fact, even the Find*By*() methods of descriptor objects owned by
1080
// this pool will be slower, since they will have to obtain locks too.
1081
// - An ErrorCollector may optionally be given to collect validation errors
1082
// in files loaded from the database. If not given, errors will be printed
1083
// to GOOGLE_LOG(ERROR). Remember that files are built on-demand, so this
1084
// ErrorCollector may be called from any thread that calls one of the
1085
// Find*By*() methods.
1086
class ErrorCollector;
1087
explicit DescriptorPool(DescriptorDatabase* fallback_database,
1088
ErrorCollector* error_collector = NULL);
1092
// Get a pointer to the generated pool. Generated protocol message classes
1093
// which are compiled into the binary will allocate their descriptors in
1094
// this pool. Do not add your own descriptors to this pool.
1095
static const DescriptorPool* generated_pool();
1097
// Find a FileDescriptor in the pool by file name. Returns NULL if not
1099
const FileDescriptor* FindFileByName(const string& name) const;
1101
// Find the FileDescriptor in the pool which defines the given symbol.
1102
// If any of the Find*ByName() methods below would succeed, then this is
1103
// equivalent to calling that method and calling the result's file() method.
1104
// Otherwise this returns NULL.
1105
const FileDescriptor* FindFileContainingSymbol(
1106
const string& symbol_name) const;
1108
// Looking up descriptors ------------------------------------------
1109
// These find descriptors by fully-qualified name. These will find both
1110
// top-level descriptors and nested descriptors. They return NULL if not
1113
const Descriptor* FindMessageTypeByName(const string& name) const;
1114
const FieldDescriptor* FindFieldByName(const string& name) const;
1115
const FieldDescriptor* FindExtensionByName(const string& name) const;
1116
const EnumDescriptor* FindEnumTypeByName(const string& name) const;
1117
const EnumValueDescriptor* FindEnumValueByName(const string& name) const;
1118
const ServiceDescriptor* FindServiceByName(const string& name) const;
1119
const MethodDescriptor* FindMethodByName(const string& name) const;
1121
// Finds an extension of the given type by number. The extendee must be
1122
// a member of this DescriptorPool or one of its underlays.
1123
const FieldDescriptor* FindExtensionByNumber(const Descriptor* extendee,
1126
// Finds extensions of extendee. The extensions will be appended to
1127
// out in an undefined order. Only extensions defined directly in
1128
// this DescriptorPool or one of its underlays are guaranteed to be
1129
// found: extensions defined in the fallback database might not be found
1130
// depending on the database implementation.
1131
void FindAllExtensions(const Descriptor* extendee,
1132
vector<const FieldDescriptor*>* out) const;
1134
// Building descriptors --------------------------------------------
1136
// When converting a FileDescriptorProto to a FileDescriptor, various
1137
// errors might be detected in the input. The caller may handle these
1138
// programmatically by implementing an ErrorCollector.
1139
class LIBPROTOBUF_EXPORT ErrorCollector {
1141
inline ErrorCollector() {}
1142
virtual ~ErrorCollector();
1144
// These constants specify what exact part of the construct is broken.
1145
// This is useful e.g. for mapping the error back to an exact location
1146
// in a .proto file.
1147
enum ErrorLocation {
1148
NAME, // the symbol name, or the package name for files
1149
NUMBER, // field or extension range number
1151
EXTENDEE, // field extendee
1152
DEFAULT_VALUE, // field default value
1153
INPUT_TYPE, // method input type
1154
OUTPUT_TYPE, // method output type
1155
OPTION_NAME, // name in assignment
1156
OPTION_VALUE, // value in option assignment
1157
OTHER // some other problem
1160
// Reports an error in the FileDescriptorProto.
1161
virtual void AddError(
1162
const string& filename, // File name in which the error occurred.
1163
const string& element_name, // Full name of the erroneous element.
1164
const Message* descriptor, // Descriptor of the erroneous element.
1165
ErrorLocation location, // One of the location constants, above.
1166
const string& message // Human-readable error message.
1170
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ErrorCollector);
1173
// Convert the FileDescriptorProto to real descriptors and place them in
1174
// this DescriptorPool. All dependencies of the file must already be in
1175
// the pool. Returns the resulting FileDescriptor, or NULL if there were
1176
// problems with the input (e.g. the message was invalid, or dependencies
1177
// were missing). Details about the errors are written to GOOGLE_LOG(ERROR).
1178
const FileDescriptor* BuildFile(const FileDescriptorProto& proto);
1180
// Same as BuildFile() except errors are sent to the given ErrorCollector.
1181
const FileDescriptor* BuildFileCollectingErrors(
1182
const FileDescriptorProto& proto,
1183
ErrorCollector* error_collector);
1185
// By default, it is an error if a FileDescriptorProto contains references
1186
// to types or other files that are not found in the DescriptorPool (or its
1187
// backing DescriptorDatabase, if any). If you call
1188
// AllowUnknownDependencies(), however, then unknown types and files
1189
// will be replaced by placeholder descriptors. This can allow you to
1190
// perform some useful operations with a .proto file even if you do not
1191
// have access to other .proto files on which it depends. However, some
1192
// heuristics must be used to fill in the gaps in information, and these
1193
// can lead to descriptors which are inaccurate. For example, the
1194
// DescriptorPool may be forced to guess whether an unknown type is a message
1195
// or an enum, as well as what package it resides in. Furthermore,
1196
// placeholder types will not be discoverable via FindMessageTypeByName()
1197
// and similar methods, which could confuse some descriptor-based algorithms.
1198
// Generally, the results of this option should only be relied upon for
1199
// debugging purposes.
1200
void AllowUnknownDependencies() { allow_unknown_ = true; }
1202
// Internal stuff --------------------------------------------------
1203
// These methods MUST NOT be called from outside the proto2 library.
1204
// These methods may contain hidden pitfalls and may be removed in a
1205
// future library version.
1207
// Create a DescriptorPool which is overlaid on top of some other pool.
1208
// If you search for a descriptor in the overlay and it is not found, the
1209
// underlay will be searched as a backup. If the underlay has its own
1210
// underlay, that will be searched next, and so on. This also means that
1211
// files built in the overlay will be cross-linked with the underlay's
1212
// descriptors if necessary. The underlay remains property of the caller;
1213
// it must remain valid for the lifetime of the newly-constructed pool.
1215
// Example: Say you want to parse a .proto file at runtime in order to use
1216
// its type with a DynamicMessage. Say this .proto file has dependencies,
1217
// but you know that all the dependencies will be things that are already
1218
// compiled into the binary. For ease of use, you'd like to load the types
1219
// right out of generated_pool() rather than have to parse redundant copies
1220
// of all these .protos and runtime. But, you don't want to add the parsed
1221
// types directly into generated_pool(): this is not allowed, and would be
1222
// bad design anyway. So, instead, you could use generated_pool() as an
1223
// underlay for a new DescriptorPool in which you add only the new file.
1225
// WARNING: Use of underlays can lead to many subtle gotchas. Instead,
1226
// try to formulate what you want to do in terms of DescriptorDatabases.
1227
explicit DescriptorPool(const DescriptorPool* underlay);
1229
// Called by generated classes at init time to add their descriptors to
1230
// generated_pool. Do NOT call this in your own code! filename must be a
1231
// permanent string (e.g. a string literal).
1232
static void InternalAddGeneratedFile(
1233
const void* encoded_file_descriptor, int size);
1236
// For internal use only: Gets a non-const pointer to the generated pool.
1237
// This is called at static-initialization time only, so thread-safety is
1238
// not a concern. If both an underlay and a fallback database are present,
1239
// the underlay takes precedence.
1240
static DescriptorPool* internal_generated_pool();
1242
// For internal use only: Changes the behavior of BuildFile() such that it
1243
// allows the file to make reference to message types declared in other files
1244
// which it did not officially declare as dependencies.
1245
void InternalDontEnforceDependencies();
1247
// For internal use only.
1248
void internal_set_underlay(const DescriptorPool* underlay) {
1249
underlay_ = underlay;
1252
// For internal (unit test) use only: Returns true if a FileDescriptor has
1253
// been constructed for the given file, false otherwise. Useful for testing
1254
// lazy descriptor initialization behavior.
1255
bool InternalIsFileLoaded(const string& filename) const;
1258
friend class Descriptor;
1259
friend class FieldDescriptor;
1260
friend class EnumDescriptor;
1261
friend class ServiceDescriptor;
1262
friend class FileDescriptor;
1263
friend class DescriptorBuilder;
1265
// Return true if the given name is a sub-symbol of any non-package
1266
// descriptor that already exists in the descriptor pool. (The full
1267
// definition of such types is already known.)
1268
bool IsSubSymbolOfBuiltType(const string& name) const;
1270
// Tries to find something in the fallback database and link in the
1271
// corresponding proto file. Returns true if successful, in which case
1272
// the caller should search for the thing again. These are declared
1273
// const because they are called by (semantically) const methods.
1274
bool TryFindFileInFallbackDatabase(const string& name) const;
1275
bool TryFindSymbolInFallbackDatabase(const string& name) const;
1276
bool TryFindExtensionInFallbackDatabase(const Descriptor* containing_type,
1277
int field_number) const;
1279
// Like BuildFile() but called internally when the file has been loaded from
1280
// fallback_database_. Declared const because it is called by (semantically)
1282
const FileDescriptor* BuildFileFromDatabase(
1283
const FileDescriptorProto& proto) const;
1285
// If fallback_database_ is NULL, this is NULL. Otherwise, this is a mutex
1286
// which must be locked while accessing tables_.
1290
DescriptorDatabase* fallback_database_;
1291
ErrorCollector* default_error_collector_;
1292
const DescriptorPool* underlay_;
1294
// This class contains a lot of hash maps with complicated types that
1295
// we'd like to keep out of the header.
1297
scoped_ptr<Tables> tables_;
1299
bool enforce_dependencies_;
1300
bool allow_unknown_;
1302
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(DescriptorPool);
1305
// inline methods ====================================================
1307
// These macros makes this repetitive code more readable.
1308
#define PROTOBUF_DEFINE_ACCESSOR(CLASS, FIELD, TYPE) \
1309
inline TYPE CLASS::FIELD() const { return FIELD##_; }
1311
// Strings fields are stored as pointers but returned as const references.
1312
#define PROTOBUF_DEFINE_STRING_ACCESSOR(CLASS, FIELD) \
1313
inline const string& CLASS::FIELD() const { return *FIELD##_; }
1315
// Arrays take an index parameter, obviously.
1316
#define PROTOBUF_DEFINE_ARRAY_ACCESSOR(CLASS, FIELD, TYPE) \
1317
inline TYPE CLASS::FIELD(int index) const { return FIELD##s_ + index; }
1319
#define PROTOBUF_DEFINE_OPTIONS_ACCESSOR(CLASS, TYPE) \
1320
inline const TYPE& CLASS::options() const { return *options_; }
1322
PROTOBUF_DEFINE_STRING_ACCESSOR(Descriptor, name)
1323
PROTOBUF_DEFINE_STRING_ACCESSOR(Descriptor, full_name)
1324
PROTOBUF_DEFINE_ACCESSOR(Descriptor, file, const FileDescriptor*)
1325
PROTOBUF_DEFINE_ACCESSOR(Descriptor, containing_type, const Descriptor*)
1327
PROTOBUF_DEFINE_ACCESSOR(Descriptor, field_count, int)
1328
PROTOBUF_DEFINE_ACCESSOR(Descriptor, nested_type_count, int)
1329
PROTOBUF_DEFINE_ACCESSOR(Descriptor, enum_type_count, int)
1331
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, field, const FieldDescriptor*)
1332
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, nested_type, const Descriptor*)
1333
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, enum_type, const EnumDescriptor*)
1335
PROTOBUF_DEFINE_ACCESSOR(Descriptor, extension_range_count, int)
1336
PROTOBUF_DEFINE_ACCESSOR(Descriptor, extension_count, int)
1337
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, extension_range,
1338
const Descriptor::ExtensionRange*)
1339
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, extension,
1340
const FieldDescriptor*)
1341
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(Descriptor, MessageOptions)
1343
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, name)
1344
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, full_name)
1345
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, lowercase_name)
1346
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, camelcase_name)
1347
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, file, const FileDescriptor*)
1348
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, number, int)
1349
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, is_extension, bool)
1350
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, type, FieldDescriptor::Type)
1351
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, label, FieldDescriptor::Label)
1352
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, containing_type, const Descriptor*)
1353
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, extension_scope, const Descriptor*)
1354
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, message_type, const Descriptor*)
1355
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, enum_type, const EnumDescriptor*)
1356
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, experimental_map_key,
1357
const FieldDescriptor*)
1358
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(FieldDescriptor, FieldOptions)
1359
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, has_default_value, bool)
1360
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_int32 , int32 )
1361
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_int64 , int64 )
1362
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_uint32, uint32)
1363
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_uint64, uint64)
1364
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_float , float )
1365
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_double, double)
1366
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_bool , bool )
1367
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_enum,
1368
const EnumValueDescriptor*)
1369
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, default_value_string)
1371
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumDescriptor, name)
1372
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumDescriptor, full_name)
1373
PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, file, const FileDescriptor*)
1374
PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, containing_type, const Descriptor*)
1375
PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, value_count, int)
1376
PROTOBUF_DEFINE_ARRAY_ACCESSOR(EnumDescriptor, value,
1377
const EnumValueDescriptor*)
1378
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(EnumDescriptor, EnumOptions)
1380
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumValueDescriptor, name)
1381
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumValueDescriptor, full_name)
1382
PROTOBUF_DEFINE_ACCESSOR(EnumValueDescriptor, number, int)
1383
PROTOBUF_DEFINE_ACCESSOR(EnumValueDescriptor, type, const EnumDescriptor*)
1384
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(EnumValueDescriptor, EnumValueOptions)
1386
PROTOBUF_DEFINE_STRING_ACCESSOR(ServiceDescriptor, name)
1387
PROTOBUF_DEFINE_STRING_ACCESSOR(ServiceDescriptor, full_name)
1388
PROTOBUF_DEFINE_ACCESSOR(ServiceDescriptor, file, const FileDescriptor*)
1389
PROTOBUF_DEFINE_ACCESSOR(ServiceDescriptor, method_count, int)
1390
PROTOBUF_DEFINE_ARRAY_ACCESSOR(ServiceDescriptor, method,
1391
const MethodDescriptor*)
1392
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(ServiceDescriptor, ServiceOptions)
1394
PROTOBUF_DEFINE_STRING_ACCESSOR(MethodDescriptor, name)
1395
PROTOBUF_DEFINE_STRING_ACCESSOR(MethodDescriptor, full_name)
1396
PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, service, const ServiceDescriptor*)
1397
PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, input_type, const Descriptor*)
1398
PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, output_type, const Descriptor*)
1399
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(MethodDescriptor, MethodOptions)
1400
PROTOBUF_DEFINE_STRING_ACCESSOR(FileDescriptor, name)
1401
PROTOBUF_DEFINE_STRING_ACCESSOR(FileDescriptor, package)
1402
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, pool, const DescriptorPool*)
1403
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, dependency_count, int)
1404
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, public_dependency_count, int)
1405
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, weak_dependency_count, int)
1406
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, message_type_count, int)
1407
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, enum_type_count, int)
1408
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, service_count, int)
1409
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, extension_count, int)
1410
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(FileDescriptor, FileOptions)
1412
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, message_type, const Descriptor*)
1413
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, enum_type, const EnumDescriptor*)
1414
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, service,
1415
const ServiceDescriptor*)
1416
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, extension,
1417
const FieldDescriptor*)
1419
#undef PROTOBUF_DEFINE_ACCESSOR
1420
#undef PROTOBUF_DEFINE_STRING_ACCESSOR
1421
#undef PROTOBUF_DEFINE_ARRAY_ACCESSOR
1423
// A few accessors differ from the macros...
1425
inline bool FieldDescriptor::is_required() const {
1426
return label() == LABEL_REQUIRED;
1429
inline bool FieldDescriptor::is_optional() const {
1430
return label() == LABEL_OPTIONAL;
1433
inline bool FieldDescriptor::is_repeated() const {
1434
return label() == LABEL_REPEATED;
1437
inline bool FieldDescriptor::is_packable() const {
1438
return is_repeated() && IsTypePackable(type());
1441
// To save space, index() is computed by looking at the descriptor's position
1442
// in the parent's array of children.
1443
inline int FieldDescriptor::index() const {
1444
if (!is_extension_) {
1445
return this - containing_type_->fields_;
1446
} else if (extension_scope_ != NULL) {
1447
return this - extension_scope_->extensions_;
1449
return this - file_->extensions_;
1453
inline int Descriptor::index() const {
1454
if (containing_type_ == NULL) {
1455
return this - file_->message_types_;
1457
return this - containing_type_->nested_types_;
1461
inline int EnumDescriptor::index() const {
1462
if (containing_type_ == NULL) {
1463
return this - file_->enum_types_;
1465
return this - containing_type_->enum_types_;
1469
inline int EnumValueDescriptor::index() const {
1470
return this - type_->values_;
1473
inline int ServiceDescriptor::index() const {
1474
return this - file_->services_;
1477
inline int MethodDescriptor::index() const {
1478
return this - service_->methods_;
1481
inline const char* FieldDescriptor::type_name() const {
1482
return kTypeToName[type_];
1485
inline FieldDescriptor::CppType FieldDescriptor::cpp_type() const {
1486
return kTypeToCppTypeMap[type_];
1489
inline const char* FieldDescriptor::cpp_type_name() const {
1490
return kCppTypeToName[kTypeToCppTypeMap[type_]];
1493
inline FieldDescriptor::CppType FieldDescriptor::TypeToCppType(Type type) {
1494
return kTypeToCppTypeMap[type];
1497
inline bool FieldDescriptor::IsTypePackable(Type field_type) {
1498
return (field_type != FieldDescriptor::TYPE_STRING &&
1499
field_type != FieldDescriptor::TYPE_GROUP &&
1500
field_type != FieldDescriptor::TYPE_MESSAGE &&
1501
field_type != FieldDescriptor::TYPE_BYTES);
1504
inline const FileDescriptor* FileDescriptor::dependency(int index) const {
1505
return dependencies_[index];
1508
inline const FileDescriptor* FileDescriptor::public_dependency(
1510
return dependencies_[public_dependencies_[index]];
1513
inline const FileDescriptor* FileDescriptor::weak_dependency(
1515
return dependencies_[weak_dependencies_[index]];
1518
} // namespace protobuf
1520
} // namespace google
1521
#endif // GOOGLE_PROTOBUF_DESCRIPTOR_H__