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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Author: robinson@google.com (Will Robinson)
+//
+// Generates Python code for a given .proto file.
+
+#ifndef GOOGLE_PROTOBUF_COMPILER_PYTHON_GENERATOR_H__
+#define GOOGLE_PROTOBUF_COMPILER_PYTHON_GENERATOR_H__
+
+#include <string>
+
+#include <google/protobuf/compiler/code_generator.h>
+#include <google/protobuf/stubs/mutex.h>
+#include <google/protobuf/stubs/common.h>
+
+namespace google {
+namespace protobuf {
+
+class Descriptor;
+class EnumDescriptor;
+class EnumValueDescriptor;
+class FieldDescriptor;
+class OneofDescriptor;
+class ServiceDescriptor;
+
+namespace io { class Printer; }
+
+namespace compiler {
+namespace python {
+
+// CodeGenerator implementation for generated Python protocol buffer classes.
+// If you create your own protocol compiler binary and you want it to support
+// Python output, you can do so by registering an instance of this
+// CodeGenerator with the CommandLineInterface in your main() function.
+class LIBPROTOC_EXPORT Generator : public CodeGenerator {
+ public:
+ Generator();
+ virtual ~Generator();
+
+ // CodeGenerator methods.
+ virtual bool Generate(const FileDescriptor* file,
+ const string& parameter,
+ GeneratorContext* generator_context,
+ string* error) const;
+
+ private:
+ void PrintImports() const;
+ void PrintFileDescriptor() const;
+ void PrintTopLevelEnums() const;
+ void PrintAllNestedEnumsInFile() const;
+ void PrintNestedEnums(const Descriptor& descriptor) const;
+ void PrintEnum(const EnumDescriptor& enum_descriptor) const;
+
+ void PrintTopLevelExtensions() const;
+
+ void PrintFieldDescriptor(
+ const FieldDescriptor& field, bool is_extension) const;
+ void PrintFieldDescriptorsInDescriptor(
+ const Descriptor& message_descriptor,
+ bool is_extension,
+ const string& list_variable_name,
+ int (Descriptor::*CountFn)() const,
+ const FieldDescriptor* (Descriptor::*GetterFn)(int) const) const;
+ void PrintFieldsInDescriptor(const Descriptor& message_descriptor) const;
+ void PrintExtensionsInDescriptor(const Descriptor& message_descriptor) const;
+ void PrintMessageDescriptors() const;
+ void PrintDescriptor(const Descriptor& message_descriptor) const;
+ void PrintNestedDescriptors(const Descriptor& containing_descriptor) const;
+
+ void PrintMessages() const;
+ void PrintMessage(const Descriptor& message_descriptor, const string& prefix,
+ std::vector<string>* to_register) const;
+ void PrintNestedMessages(const Descriptor& containing_descriptor,
+ const string& prefix,
+ std::vector<string>* to_register) const;
+
+ void FixForeignFieldsInDescriptors() const;
+ void FixForeignFieldsInDescriptor(
+ const Descriptor& descriptor,
+ const Descriptor* containing_descriptor) const;
+ void FixForeignFieldsInField(const Descriptor* containing_type,
+ const FieldDescriptor& field,
+ const string& python_dict_name) const;
+ void AddMessageToFileDescriptor(const Descriptor& descriptor) const;
+ void AddEnumToFileDescriptor(const EnumDescriptor& descriptor) const;
+ void AddExtensionToFileDescriptor(const FieldDescriptor& descriptor) const;
+ void AddServiceToFileDescriptor(const ServiceDescriptor& descriptor) const;
+ string FieldReferencingExpression(const Descriptor* containing_type,
+ const FieldDescriptor& field,
+ const string& python_dict_name) const;
+ template <typename DescriptorT>
+ void FixContainingTypeInDescriptor(
+ const DescriptorT& descriptor,
+ const Descriptor* containing_descriptor) const;
+
+ void FixForeignFieldsInExtensions() const;
+ void FixForeignFieldsInExtension(
+ const FieldDescriptor& extension_field) const;
+ void FixForeignFieldsInNestedExtensions(const Descriptor& descriptor) const;
+
+ void PrintServices() const;
+ void PrintServiceDescriptors() const;
+ void PrintServiceDescriptor(const ServiceDescriptor& descriptor) const;
+ void PrintServiceClass(const ServiceDescriptor& descriptor) const;
+ void PrintServiceStub(const ServiceDescriptor& descriptor) const;
+ void PrintDescriptorKeyAndModuleName(
+ const ServiceDescriptor& descriptor) const;
+
+ void PrintEnumValueDescriptor(const EnumValueDescriptor& descriptor) const;
+ string OptionsValue(const string& serialized_options) const;
+ bool GeneratingDescriptorProto() const;
+
+ template <typename DescriptorT>
+ string ModuleLevelDescriptorName(const DescriptorT& descriptor) const;
+ string ModuleLevelMessageName(const Descriptor& descriptor) const;
+ string ModuleLevelServiceDescriptorName(
+ const ServiceDescriptor& descriptor) const;
+
+ template <typename DescriptorT, typename DescriptorProtoT>
+ void PrintSerializedPbInterval(
+ const DescriptorT& descriptor, DescriptorProtoT& proto) const;
+
+ void FixAllDescriptorOptions() const;
+ void FixOptionsForField(const FieldDescriptor& field) const;
+ void FixOptionsForOneof(const OneofDescriptor& oneof) const;
+ void FixOptionsForEnum(const EnumDescriptor& descriptor) const;
+ void FixOptionsForMessage(const Descriptor& descriptor) const;
+
+ void CopyPublicDependenciesAliases(
+ const string& copy_from, const FileDescriptor* file) const;
+
+ // Very coarse-grained lock to ensure that Generate() is reentrant.
+ // Guards file_, printer_ and file_descriptor_serialized_.
+ mutable Mutex mutex_;
+ mutable const FileDescriptor* file_; // Set in Generate(). Under mutex_.
+ mutable string file_descriptor_serialized_;
+ mutable io::Printer* printer_; // Set in Generate(). Under mutex_.
+
+ GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(Generator);
+};
+
+} // namespace python
+} // namespace compiler
+} // namespace protobuf
+
+} // namespace google
+#endif // GOOGLE_PROTOBUF_COMPILER_PYTHON_GENERATOR_H__