Protocol Buffers

plugin.pb.h

#include <google/protobuf/compiler/plugin.pb.h>
namespace google::protobuf::compiler

API for protoc plugins.

This file defines a set of protocol message classes which make up the API to protoc code generator plugins. Plugins written in C++ should probably build on the API in plugin.h instead of dealing with the protobuf-level API, but plugins in other languages will need to deal with the raw messages as defined below.

The protocol compiler currently doesn't support auto-generated documentation, hence this page contains no descriptions. This file was generated by the protocol compiler from plugin.proto, whose contents are as follows:

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// http://code.google.com/p/protobuf/
//
// 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)
//
// WARNING:  The plugin interface is currently EXPERIMENTAL and is subject to
//   change.
//
// protoc (aka the Protocol Compiler) can be extended via plugins.  A plugin is
// just a program that reads a CodeGeneratorRequest from stdin and writes a
// CodeGeneratorResponse to stdout.
//
// Plugins written using C++ can use google/protobuf/compiler/plugin.h instead
// of dealing with the raw protocol defined here.
//
// A plugin executable needs only to be placed somewhere in the path.  The
// plugin should be named "protoc-gen-$NAME", and will then be used when the
// flag "--${NAME}_out" is passed to protoc.

package google.protobuf.compiler;
option java_package = "com.google.protobuf.compiler";
option java_outer_classname = "PluginProtos";

import "google/protobuf/descriptor.proto";

// An encoded CodeGeneratorRequest is written to the plugin's stdin.
message CodeGeneratorRequest {
  // The .proto files that were explicitly listed on the command-line.  The
  // code generator should generate code only for these files.  Each file's
  // descriptor will be included in proto_file, below.
  repeated string file_to_generate = 1;

  // The generator parameter passed on the command-line.
  optional string parameter = 2;

  // FileDescriptorProtos for all files in files_to_generate and everything
  // they import.  The files will appear in topological order, so each file
  // appears before any file that imports it.
  //
  // protoc guarantees that all proto_files will be written after
  // the fields above, even though this is not technically guaranteed by the
  // protobuf wire format.  This theoretically could allow a plugin to stream
  // in the FileDescriptorProtos and handle them one by one rather than read
  // the entire set into memory at once.  However, as of this writing, this
  // is not similarly optimized on protoc's end -- it will store all fields in
  // memory at once before sending them to the plugin.
  repeated FileDescriptorProto proto_file = 15;
}

// The plugin writes an encoded CodeGeneratorResponse to stdout.
message CodeGeneratorResponse {
  // Error message.  If non-empty, code generation failed.  The plugin process
  // should exit with status code zero even if it reports an error in this way.
  //
  // This should be used to indicate errors in .proto files which prevent the
  // code generator from generating correct code.  Errors which indicate a
  // problem in protoc itself -- such as the input CodeGeneratorRequest being
  // unparseable -- should be reported by writing a message to stderr and
  // exiting with a non-zero status code.
  optional string error = 1;

  // Represents a single generated file.
  message File {
    // The file name, relative to the output directory.  The name must not
    // contain "." or ".." components and must be relative, not be absolute (so,
    // the file cannot lie outside the output directory).  "/" must be used as
    // the path separator, not "\".
    //
    // If the name is omitted, the content will be appended to the previous
    // file.  This allows the generator to break large files into small chunks,
    // and allows the generated text to be streamed back to protoc so that large
    // files need not reside completely in memory at one time.  Note that as of
    // this writing protoc does not optimize for this -- it will read the entire
    // CodeGeneratorResponse before writing files to disk.
    optional string name = 1;

    // If non-empty, indicates that the named file should already exist, and the
    // content here is to be inserted into that file at a defined insertion
    // point.  This feature allows a code generator to extend the output
    // produced by another code generator.  The original generator may provide
    // insertion points by placing special annotations in the file that look
    // like:
    //   @@protoc_insertion_point(NAME)
    // The annotation can have arbitrary text before and after it on the line,
    // which allows it to be placed in a comment.  NAME should be replaced with
    // an identifier naming the point -- this is what other generators will use
    // as the insertion_point.  Code inserted at this point will be placed
    // immediately above the line containing the insertion point (thus multiple
    // insertions to the same point will come out in the order they were added).
    // The double-@ is intended to make it unlikely that the generated code
    // could contain things that look like insertion points by accident.
    //
    // For example, the C++ code generator places the following line in the
    // .pb.h files that it generates:
    //   // @@protoc_insertion_point(namespace_scope)
    // This line appears within the scope of the file's package namespace, but
    // outside of any particular class.  Another plugin can then specify the
    // insertion_point "namespace_scope" to generate additional classes or
    // other declarations that should be placed in this scope.
    //
    // Note that if the line containing the insertion point begins with
    // whitespace, the same whitespace will be added to every line of the
    // inserted text.  This is useful for languages like Python, where
    // indentation matters.  In these languages, the insertion point comment
    // should be indented the same amount as any inserted code will need to be
    // in order to work correctly in that context.
    //
    // The code generator that generates the initial file and the one which
    // inserts into it must both run as part of a single invocation of protoc.
    // Code generators are executed in the order in which they appear on the
    // command line.
    //
    // If |insertion_point| is present, |name| must also be present.
    optional string insertion_point = 2;

    // The file contents.
    optional string content = 15;
  }
  repeated File file = 15;
}

Classes in this file

See the docs for plugin.pb.h for more information about this class.
See the docs for plugin.pb.h for more information about this class.
See the docs for plugin.pb.h for more information about this class.

File Members

These definitions are not part of any class.
void LIBPROTOC_EXPORT
protobuf_AddDesc_google_2fprotobuf_2fcompiler_2fplugin_2eproto()
Internal implementation detail -- do not call these.
void
protobuf_AssignDesc_google_2fprotobuf_2fcompiler_2fplugin_2eproto()
void
protobuf_ShutdownFile_google_2fprotobuf_2fcompiler_2fplugin_2eproto()

class CodeGeneratorRequest: public Message

#include <google/protobuf/compiler/plugin.pb.h>
namespace google::protobuf::compiler

See the docs for plugin.pb.h for more information about this class.

Members

const int
kFileToGenerateFieldNumber = 1
const int
kParameterFieldNumber = 2
const int
kProtoFileFieldNumber = 15
CodeGeneratorRequest()
virtual
~CodeGeneratorRequest()
CodeGeneratorRequest(const CodeGeneratorRequest & from)
CodeGeneratorRequest &
operator=(const CodeGeneratorRequest & from)
const UnknownFieldSet &
unknown_fields() const
UnknownFieldSet *
mutable_unknown_fields()
void
Swap(CodeGeneratorRequest * other)
int
file_to_generate_size() const
repeated string file_to_generate = 1;
void
clear_file_to_generate()
const ::std::string &
file_to_generate(int index) const
inline::std::string *
mutable_file_to_generate(int index)
void
set_file_to_generate(int index, const ::std::string & value)
void
set_file_to_generate(int index, const char * value)
void
set_file_to_generate(int index, const char * value, size_t size)
inline::std::string *
add_file_to_generate()
void
add_file_to_generate(const ::std::string & value)
void
add_file_to_generate(const char * value)
void
add_file_to_generate(const char * value, size_t size)
const RepeatedPtrField< ::std::string > &
file_to_generate() const
RepeatedPtrField< ::std::string > *
mutable_file_to_generate()
bool
has_parameter() const
optional string parameter = 2;
void
clear_parameter()
const ::std::string &
parameter() const
void
set_parameter(const ::std::string & value)
void
set_parameter(const char * value)
void
set_parameter(const char * value, size_t size)
inline::std::string *
mutable_parameter()
inline::std::string *
release_parameter()
void
set_allocated_parameter(::std::string * parameter)
int
proto_file_size() const
repeated .google.protobuf.FileDescriptorProto proto_file = 15;
void
clear_proto_file()
const FileDescriptorProto &
proto_file(int index) const
FileDescriptorProto *
mutable_proto_file(int index)
FileDescriptorProto *
add_proto_file()
const RepeatedPtrField< FileDescriptorProto > &
proto_file() const
RepeatedPtrField< FileDescriptorProto > *
mutable_proto_file()
static const Descriptor *
descriptor()
static const CodeGeneratorRequest &
default_instance()

implements Message

virtual CodeGeneratorRequest *
New() const
Construct a new instance of the same type. more...
virtual void
CopyFrom(const Message & from)
Make this message into a copy of the given message. more...
virtual void
MergeFrom(const Message & from)
Merge the fields from the given message into this message. more...
void
CopyFrom(const CodeGeneratorRequest & from)
void
MergeFrom(const CodeGeneratorRequest & from)
virtual void
Clear()
Clear all fields of the message and set them to their default values. more...
virtual bool
IsInitialized() const
Quickly check if all required fields have values set.
virtual int
ByteSize() const
Computes the serialized size of the message. more...
virtual bool
MergePartialFromCodedStream(io::CodedInputStream * input)
Like MergeFromCodedStream(), but succeeds even if required fields are missing in the input. more...
virtual void
SerializeWithCachedSizes(io::CodedOutputStream * output) const
Serializes the message without recomputing the size. more...
virtual uint8 *
SerializeWithCachedSizesToArray(uint8 * target) const
Like SerializeWithCachedSizes, but writes directly to *target, returning a pointer to the byte immediately after the last byte written. more...
virtual int
GetCachedSize() const
Returns the result of the last call to ByteSize(). more...
virtual Metadata
GetMetadata() const
Get a struct containing the metadata for the Message. more...

virtual CodeGeneratorRequest *
    CodeGeneratorRequest::New() const

Construct a new instance of the same type.

Ownership is passed to the caller. (This is also defined in MessageLite, but is defined again here for return-type covariance.)


virtual void CodeGeneratorRequest::CopyFrom(
        const Message & from)

Make this message into a copy of the given message.

The given message must have the same descriptor, but need not necessarily be the same class. By default this is just implemented as "Clear(); MergeFrom(from);".


virtual void CodeGeneratorRequest::MergeFrom(
        const Message & from)

Merge the fields from the given message into this message.

Singular fields will be overwritten, except for embedded messages which will be merged. Repeated fields will be concatenated. The given message must be of the same type as this message (i.e. the exact same class).


virtual void CodeGeneratorRequest::Clear()

Clear all fields of the message and set them to their default values.

Clear() avoids freeing memory, assuming that any memory allocated to hold parts of the message will be needed again to hold the next message. If you actually want to free the memory used by a Message, you must delete it.


virtual int CodeGeneratorRequest::ByteSize() const

Computes the serialized size of the message.

This recursively calls ByteSize() on all embedded messages. If a subclass does not override this, it MUST override SetCachedSize().


virtual bool CodeGeneratorRequest::MergePartialFromCodedStream(
        io::CodedInputStream * input)

Like MergeFromCodedStream(), but succeeds even if required fields are missing in the input.

MergeFromCodedStream() is just implemented as MergePartialFromCodedStream() followed by IsInitialized().


virtual void CodeGeneratorRequest::SerializeWithCachedSizes(
        io::CodedOutputStream * output) const

Serializes the message without recomputing the size.

The message must not have changed since the last call to ByteSize(); if it has, the results are undefined.


virtual uint8 * CodeGeneratorRequest::SerializeWithCachedSizesToArray(
        uint8 * target) const

Like SerializeWithCachedSizes, but writes directly to *target, returning a pointer to the byte immediately after the last byte written.

"target" must point at a byte array of at least ByteSize() bytes.


virtual int CodeGeneratorRequest::GetCachedSize() const

Returns the result of the last call to ByteSize().

An embedded message's size is needed both to serialize it (because embedded messages are length-delimited) and to compute the outer message's size. Caching the size avoids computing it multiple times.

ByteSize() does not automatically use the cached size when available because this would require invalidating it every time the message was modified, which would be too hard and expensive. (E.g. if a deeply-nested sub-message is changed, all of its parents' cached sizes would need to be invalidated, which is too much work for an otherwise inlined setter method.)


virtual Metadata CodeGeneratorRequest::GetMetadata() const

Get a struct containing the metadata for the Message.

Most subclasses only need to implement this method, rather than the GetDescriptor() and GetReflection() wrappers.

class CodeGeneratorResponse_File: public Message

#include <google/protobuf/compiler/plugin.pb.h>
namespace google::protobuf::compiler

See the docs for plugin.pb.h for more information about this class.

Members

const int
kNameFieldNumber = 1
const int
kInsertionPointFieldNumber = 2
const int
kContentFieldNumber = 15
CodeGeneratorResponse_File()
virtual
~CodeGeneratorResponse_File()
CodeGeneratorResponse_File(const CodeGeneratorResponse_File & from)
CodeGeneratorResponse_File &
operator=(const CodeGeneratorResponse_File & from)
const UnknownFieldSet &
unknown_fields() const
UnknownFieldSet *
mutable_unknown_fields()
void
bool
has_name() const
optional string name = 1;
void
clear_name()
const ::std::string &
name() const
void
set_name(const ::std::string & value)
void
set_name(const char * value)
void
set_name(const char * value, size_t size)
inline::std::string *
mutable_name()
inline::std::string *
release_name()
void
set_allocated_name(::std::string * name)
bool
has_insertion_point() const
optional string insertion_point = 2;
void
clear_insertion_point()
const ::std::string &
insertion_point() const
void
set_insertion_point(const ::std::string & value)
void
set_insertion_point(const char * value)
void
set_insertion_point(const char * value, size_t size)
inline::std::string *
mutable_insertion_point()
inline::std::string *
release_insertion_point()
void
set_allocated_insertion_point(::std::string * insertion_point)
bool
has_content() const
optional string content = 15;
void
clear_content()
const ::std::string &
content() const
void
set_content(const ::std::string & value)
void
set_content(const char * value)
void
set_content(const char * value, size_t size)
inline::std::string *
mutable_content()
inline::std::string *
release_content()
void
set_allocated_content(::std::string * content)
static const Descriptor *
descriptor()
static const CodeGeneratorResponse_File &
default_instance()

implements Message

virtual CodeGeneratorResponse_File *
New() const
Construct a new instance of the same type. more...
virtual void
CopyFrom(const Message & from)
Make this message into a copy of the given message. more...
virtual void
MergeFrom(const Message & from)
Merge the fields from the given message into this message. more...
void
CopyFrom(const CodeGeneratorResponse_File & from)
void
MergeFrom(const CodeGeneratorResponse_File & from)
virtual void
Clear()
Clear all fields of the message and set them to their default values. more...
virtual bool
IsInitialized() const
Quickly check if all required fields have values set.
virtual int
ByteSize() const
Computes the serialized size of the message. more...
virtual bool
MergePartialFromCodedStream(io::CodedInputStream * input)
Like MergeFromCodedStream(), but succeeds even if required fields are missing in the input. more...
virtual void
SerializeWithCachedSizes(io::CodedOutputStream * output) const
Serializes the message without recomputing the size. more...
virtual uint8 *
SerializeWithCachedSizesToArray(uint8 * target) const
Like SerializeWithCachedSizes, but writes directly to *target, returning a pointer to the byte immediately after the last byte written. more...
virtual int
GetCachedSize() const
Returns the result of the last call to ByteSize(). more...
virtual Metadata
GetMetadata() const
Get a struct containing the metadata for the Message. more...

virtual CodeGeneratorResponse_File *
    CodeGeneratorResponse_File::New() const

Construct a new instance of the same type.

Ownership is passed to the caller. (This is also defined in MessageLite, but is defined again here for return-type covariance.)


virtual void CodeGeneratorResponse_File::CopyFrom(
        const Message & from)

Make this message into a copy of the given message.

The given message must have the same descriptor, but need not necessarily be the same class. By default this is just implemented as "Clear(); MergeFrom(from);".


virtual void CodeGeneratorResponse_File::MergeFrom(
        const Message & from)

Merge the fields from the given message into this message.

Singular fields will be overwritten, except for embedded messages which will be merged. Repeated fields will be concatenated. The given message must be of the same type as this message (i.e. the exact same class).


virtual void CodeGeneratorResponse_File::Clear()

Clear all fields of the message and set them to their default values.

Clear() avoids freeing memory, assuming that any memory allocated to hold parts of the message will be needed again to hold the next message. If you actually want to free the memory used by a Message, you must delete it.


virtual int CodeGeneratorResponse_File::ByteSize() const

Computes the serialized size of the message.

This recursively calls ByteSize() on all embedded messages. If a subclass does not override this, it MUST override SetCachedSize().


virtual bool CodeGeneratorResponse_File::MergePartialFromCodedStream(
        io::CodedInputStream * input)

Like MergeFromCodedStream(), but succeeds even if required fields are missing in the input.

MergeFromCodedStream() is just implemented as MergePartialFromCodedStream() followed by IsInitialized().


virtual void CodeGeneratorResponse_File::SerializeWithCachedSizes(
        io::CodedOutputStream * output) const

Serializes the message without recomputing the size.

The message must not have changed since the last call to ByteSize(); if it has, the results are undefined.


virtual uint8 * CodeGeneratorResponse_File::SerializeWithCachedSizesToArray(
        uint8 * target) const

Like SerializeWithCachedSizes, but writes directly to *target, returning a pointer to the byte immediately after the last byte written.

"target" must point at a byte array of at least ByteSize() bytes.


virtual int CodeGeneratorResponse_File::GetCachedSize() const

Returns the result of the last call to ByteSize().

An embedded message's size is needed both to serialize it (because embedded messages are length-delimited) and to compute the outer message's size. Caching the size avoids computing it multiple times.

ByteSize() does not automatically use the cached size when available because this would require invalidating it every time the message was modified, which would be too hard and expensive. (E.g. if a deeply-nested sub-message is changed, all of its parents' cached sizes would need to be invalidated, which is too much work for an otherwise inlined setter method.)


virtual Metadata CodeGeneratorResponse_File::GetMetadata() const

Get a struct containing the metadata for the Message.

Most subclasses only need to implement this method, rather than the GetDescriptor() and GetReflection() wrappers.

class CodeGeneratorResponse: public Message

#include <google/protobuf/compiler/plugin.pb.h>
namespace google::protobuf::compiler

See the docs for plugin.pb.h for more information about this class.

Members

typedef
const int
kErrorFieldNumber = 1
const int
kFileFieldNumber = 15
CodeGeneratorResponse()
virtual
~CodeGeneratorResponse()
CodeGeneratorResponse(const CodeGeneratorResponse & from)
CodeGeneratorResponse &
operator=(const CodeGeneratorResponse & from)
const UnknownFieldSet &
unknown_fields() const
UnknownFieldSet *
mutable_unknown_fields()
void
Swap(CodeGeneratorResponse * other)
bool
has_error() const
optional string error = 1;
void
clear_error()
const ::std::string &
error() const
void
set_error(const ::std::string & value)
void
set_error(const char * value)
void
set_error(const char * value, size_t size)
inline::std::string *
mutable_error()
inline::std::string *
release_error()
void
set_allocated_error(::std::string * error)
int
file_size() const
repeated .google.protobuf.compiler.CodeGeneratorResponse.File file = 15;
void
clear_file()
const compiler::CodeGeneratorResponse_File &
file(int index) const
compiler::CodeGeneratorResponse_File *
mutable_file(int index)
compiler::CodeGeneratorResponse_File *
add_file()
const RepeatedPtrField< compiler::CodeGeneratorResponse_File > &
file() const
RepeatedPtrField< compiler::CodeGeneratorResponse_File > *
mutable_file()
static const Descriptor *
descriptor()
static const CodeGeneratorResponse &
default_instance()

implements Message

virtual CodeGeneratorResponse *
New() const
Construct a new instance of the same type. more...
virtual void
CopyFrom(const Message & from)
Make this message into a copy of the given message. more...
virtual void
MergeFrom(const Message & from)
Merge the fields from the given message into this message. more...
void
CopyFrom(const CodeGeneratorResponse & from)
void
MergeFrom(const CodeGeneratorResponse & from)
virtual void
Clear()
Clear all fields of the message and set them to their default values. more...
virtual bool
IsInitialized() const
Quickly check if all required fields have values set.
virtual int
ByteSize() const
Computes the serialized size of the message. more...
virtual bool
MergePartialFromCodedStream(io::CodedInputStream * input)
Like MergeFromCodedStream(), but succeeds even if required fields are missing in the input. more...
virtual void
SerializeWithCachedSizes(io::CodedOutputStream * output) const
Serializes the message without recomputing the size. more...
virtual uint8 *
SerializeWithCachedSizesToArray(uint8 * target) const
Like SerializeWithCachedSizes, but writes directly to *target, returning a pointer to the byte immediately after the last byte written. more...
virtual int
GetCachedSize() const
Returns the result of the last call to ByteSize(). more...
virtual Metadata
GetMetadata() const
Get a struct containing the metadata for the Message. more...

virtual CodeGeneratorResponse *
    CodeGeneratorResponse::New() const

Construct a new instance of the same type.

Ownership is passed to the caller. (This is also defined in MessageLite, but is defined again here for return-type covariance.)


virtual void CodeGeneratorResponse::CopyFrom(
        const Message & from)

Make this message into a copy of the given message.

The given message must have the same descriptor, but need not necessarily be the same class. By default this is just implemented as "Clear(); MergeFrom(from);".


virtual void CodeGeneratorResponse::MergeFrom(
        const Message & from)

Merge the fields from the given message into this message.

Singular fields will be overwritten, except for embedded messages which will be merged. Repeated fields will be concatenated. The given message must be of the same type as this message (i.e. the exact same class).


virtual void CodeGeneratorResponse::Clear()

Clear all fields of the message and set them to their default values.

Clear() avoids freeing memory, assuming that any memory allocated to hold parts of the message will be needed again to hold the next message. If you actually want to free the memory used by a Message, you must delete it.


virtual int CodeGeneratorResponse::ByteSize() const

Computes the serialized size of the message.

This recursively calls ByteSize() on all embedded messages. If a subclass does not override this, it MUST override SetCachedSize().


virtual bool CodeGeneratorResponse::MergePartialFromCodedStream(
        io::CodedInputStream * input)

Like MergeFromCodedStream(), but succeeds even if required fields are missing in the input.

MergeFromCodedStream() is just implemented as MergePartialFromCodedStream() followed by IsInitialized().


virtual void CodeGeneratorResponse::SerializeWithCachedSizes(
        io::CodedOutputStream * output) const

Serializes the message without recomputing the size.

The message must not have changed since the last call to ByteSize(); if it has, the results are undefined.


virtual uint8 * CodeGeneratorResponse::SerializeWithCachedSizesToArray(
        uint8 * target) const

Like SerializeWithCachedSizes, but writes directly to *target, returning a pointer to the byte immediately after the last byte written.

"target" must point at a byte array of at least ByteSize() bytes.


virtual int CodeGeneratorResponse::GetCachedSize() const

Returns the result of the last call to ByteSize().

An embedded message's size is needed both to serialize it (because embedded messages are length-delimited) and to compute the outer message's size. Caching the size avoids computing it multiple times.

ByteSize() does not automatically use the cached size when available because this would require invalidating it every time the message was modified, which would be too hard and expensive. (E.g. if a deeply-nested sub-message is changed, all of its parents' cached sizes would need to be invalidated, which is too much work for an otherwise inlined setter method.)


virtual Metadata CodeGeneratorResponse::GetMetadata() const

Get a struct containing the metadata for the Message.

Most subclasses only need to implement this method, rather than the GetDescriptor() and GetReflection() wrappers.

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