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// 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)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#ifndef GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__
#define GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__
#include <memory>
#include <string>
#include <vector>
#include <google/protobuf/compiler/cpp/cpp_field.h>
#include <google/protobuf/compiler/cpp/cpp_options.h>
namespace google {
namespace protobuf {
namespace io {
class Printer; // printer.h
}
}
namespace protobuf {
namespace compiler {
namespace cpp {
class EnumGenerator; // enum.h
class ExtensionGenerator; // extension.h
class MessageGenerator {
public:
// See generator.cc for the meaning of dllexport_decl.
explicit MessageGenerator(const Descriptor* descriptor,
const Options& options);
~MessageGenerator();
// Header stuff.
// Generate foward declarations for this class and all its nested types.
void GenerateForwardDeclaration(io::Printer* printer);
// Generate definitions of all nested enums (must come before class
// definitions because those classes use the enums definitions).
void GenerateEnumDefinitions(io::Printer* printer);
// Generate specializations of GetEnumDescriptor<MyEnum>().
// Precondition: in ::google::protobuf namespace.
void GenerateGetEnumDescriptorSpecializations(io::Printer* printer);
// Generate definitions for this class and all its nested types.
void GenerateClassDefinition(io::Printer* printer);
// Generate definitions of inline methods (placed at the end of the header
// file).
void GenerateInlineMethods(io::Printer* printer);
// Source file stuff.
// Generate code which declares all the global descriptor pointers which
// will be initialized by the methods below.
void GenerateDescriptorDeclarations(io::Printer* printer);
// Generate code that initializes the global variable storing the message's
// descriptor.
void GenerateDescriptorInitializer(io::Printer* printer, int index);
// Generate code that calls MessageFactory::InternalRegisterGeneratedMessage()
// for all types.
void GenerateTypeRegistrations(io::Printer* printer);
// Generates code that allocates the message's default instance.
void GenerateDefaultInstanceAllocator(io::Printer* printer);
// Generates code that initializes the message's default instance. This
// is separate from allocating because all default instances must be
// allocated before any can be initialized.
void GenerateDefaultInstanceInitializer(io::Printer* printer);
// Generates code that should be run when ShutdownProtobufLibrary() is called,
// to delete all dynamically-allocated objects.
void GenerateShutdownCode(io::Printer* printer);
// Generate all non-inline methods for this class.
void GenerateClassMethods(io::Printer* printer);
private:
// Generate declarations and definitions of accessors for fields.
void GenerateFieldAccessorDeclarations(io::Printer* printer);
void GenerateFieldAccessorDefinitions(io::Printer* printer);
// Generate the field offsets array.
void GenerateOffsets(io::Printer* printer);
// Generate constructors and destructor.
void GenerateStructors(io::Printer* printer);
// The compiler typically generates multiple copies of each constructor and
// destructor: http://gcc.gnu.org/bugs.html#nonbugs_cxx
// Placing common code in a separate method reduces the generated code size.
//
// Generate the shared constructor code.
void GenerateSharedConstructorCode(io::Printer* printer);
// Generate the shared destructor code.
void GenerateSharedDestructorCode(io::Printer* printer);
// Generate standard Message methods.
void GenerateClear(io::Printer* printer);
void GenerateOneofClear(io::Printer* printer);
void GenerateMergeFromCodedStream(io::Printer* printer);
void GenerateSerializeWithCachedSizes(io::Printer* printer);
void GenerateSerializeWithCachedSizesToArray(io::Printer* printer);
void GenerateSerializeWithCachedSizesBody(io::Printer* printer,
bool to_array);
void GenerateByteSize(io::Printer* printer);
void GenerateMergeFrom(io::Printer* printer);
void GenerateCopyFrom(io::Printer* printer);
void GenerateSwap(io::Printer* printer);
void GenerateIsInitialized(io::Printer* printer);
// Helpers for GenerateSerializeWithCachedSizes().
void GenerateSerializeOneField(io::Printer* printer,
const FieldDescriptor* field,
bool unbounded);
void GenerateSerializeOneExtensionRange(
io::Printer* printer, const Descriptor::ExtensionRange* range,
bool unbounded);
const Descriptor* descriptor_;
string classname_;
Options options_;
FieldGeneratorMap field_generators_;
vector< vector<string> > runs_of_fields_; // that might be trivially cleared
scoped_array<scoped_ptr<MessageGenerator> > nested_generators_;
scoped_array<scoped_ptr<EnumGenerator> > enum_generators_;
scoped_array<scoped_ptr<ExtensionGenerator> > extension_generators_;
bool uses_string_;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MessageGenerator);
};
} // namespace cpp
} // namespace compiler
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__
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