Remove //base dependency

protoc_plugins/json_values_converter.py

-#!/usr/bin/env python
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""protoc plugin to create c++ reader/writer for json-encoded protobufs
-
-The reader/writer use Chrome's base::Values.
-"""
-
-import optparse
-import os
-
-from util import plugin, plugin_protos, writer
-from util.plugin import Indented
-
-class CppConverterWriter(writer.CodeWriter):
-  def WriteProtoFile(self, proto_file, output_dir):
-    err = proto_file.CheckSupported()
-    if err:
-      self.AddError(err)
-      return
-
-    self.WriteCStyleHeader()
-
-    self.Output('#include "{output_dir}{generated_pb_h}"',
-                output_dir=output_dir + '/' if output_dir else '',
-                generated_pb_h=proto_file.CppBaseHeader())
-    self.Output('')
-
-    self.Output('// proto dependencies')
-
-    for dep in proto_file.GetDependencies():
-      self.WriteIncludeForProtoFile(dep)
-
-    self.Output('')
-    self.Output('// base dependencies')
-    self.Output('#include "base/values.h"')
-    self.Output('')
-    self.Output('#include <memory>')
-    self.Output('#include <string>')
-    self.Output('#include <utility>')
-    self.Output('')
-
-    namespaces = proto_file.ProtoNamespaces() + ['json']
-    for name in namespaces:
-      self.Output('namespace {name} {{', name=name)
-      self.IncreaseIndent()
-
-    for message in proto_file.GetMessages():
-      self.WriteMessage(message)
-
-    # Nothing to do for enums
-
-    for name in namespaces:
-      self.DecreaseIndent()
-      self.Output('}}')
-
-  def WriteMessage(self, message):
-    self.Output('class {class_name} {{',
-                class_name=message.CppConverterClassName())
-    self.Output(' public:')
-    with self.AddIndent():
-      for nested_class in message.GetMessages():
-        self.WriteMessage(nested_class)
-
-      generated_class_name = message.QualifiedTypes().cpp_base
-      # Nothing to write for enums.
-
-      self.Output(
-          'static bool ReadFromValue(const base::Value* json, {generated_class_name}* message) {{\n'
-          #'  {generated_class_name} message;\n'
-          '  const base::DictionaryValue* dict;\n'
-          '  if (!json->GetAsDictionary(&dict)) goto error;\n'
-          '',
-          generated_class_name=generated_class_name)
-
-      with self.AddIndent():
-        for field_proto in message.GetFields():
-          self.WriteFieldRead(field_proto)
-
-      self.Output(
-          '  return true;\n'
-          '\n'
-          'error:\n'
-          '  return false;\n'
-          '}}\n'
-          '\n'
-          'static std::unique_ptr<base::DictionaryValue> WriteToValue(const {generated_class_name}& message) {{\n'
-          '  std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());\n'
-          '',
-          generated_class_name=generated_class_name)
-
-      with self.AddIndent():
-        for field_proto in message.GetFields():
-          self.FieldWriteToValue(field_proto)
-
-      self.Output(
-          '  return dict;\n'
-          '',
-          generated_class_name=generated_class_name)
-      self.Output('}}')
-
-    self.Output('}};')
-    self.Output('')
-
-  def FieldWriteToValue(self, field):
-    if field.IsRepeated():
-      self.Output('{{')
-    else:
-      self.Output('if (message.has_{field_name}()) {{\n', field_name=field.name)
-
-    with self.AddIndent():
-      if field.IsRepeated():
-        self.RepeatedMemberFieldWriteToValue(field)
-      else:
-        self.OptionalMemberFieldWriteToValue(field)
-
-    self.Output('}}')
-
-  def RepeatedMemberFieldWriteToValue(self, field):
-    prologue = (
-        'base::ListValue* field_list = new base::ListValue();\n'
-        'dict->Set("{field_number}", field_list);\n'
-        'for (int i = 0; i < message.{field_name}_size(); ++i) {{\n'
-        )
-
-    if field.IsClassType():
-      middle = (
-          'std::unique_ptr<base::Value> inner_message_value = \n'
-          '    {inner_class_converter}::WriteToValue(message.{field_name}(i));\n'
-          'field_list->Append(std::move(inner_message_value));\n'
-          )
-    else:
-      middle = (
-          'field_list->Append{value_type}(message.{field_name}(i));\n'
-          )
-    self.Output(
-        prologue + Indented(middle) + '\n}}',
-        field_number=field.JavascriptIndex(),
-        field_name=field.name,
-        value_type=field.CppValueType() if not field.IsClassType() else None,
-        inner_class_converter=field.CppConverterType()
-        )
-
-  def OptionalMemberFieldWriteToValue(self, field):
-    if field.IsClassType():
-      body = (
-          'std::unique_ptr<base::Value> inner_message_value = \n'
-          '    {inner_class_converter}::WriteToValue(message.{field_name}());\n'
-          'dict->Set("{field_number}", std::move(inner_message_value));\n'
-          )
-    else:
-      body = (
-          'dict->Set{value_type}("{field_number}", message.{field_name}());\n'
-          )
-
-    self.Output(
-        body,
-        field_number=field.JavascriptIndex(),
-        field_name=field.name,
-        value_type=field.CppValueType() if not field.IsClassType() else None,
-        inner_class_converter=field.CppConverterType(),
-        )
-
-  def WriteFieldRead(self, field):
-    self.Output('if (dict->HasKey("{field_number}")) {{',
-                field_number=field.JavascriptIndex())
-
-    with self.AddIndent():
-      if field.IsRepeated():
-        self.RepeatedMemberFieldRead(field)
-      else:
-        self.OptionalMemberFieldRead(field)
-
-    self.Output('}}')
-
-  def RepeatedMemberFieldRead(self, field):
-    prologue = (
-        'const base::ListValue* field_list;\n'
-        'if (!dict->GetList("{field_number}", &field_list)) {{\n'
-        '  goto error;\n'
-        '}}\n'
-        'for (size_t i = 0; i < field_list->GetSize(); ++i) {{\n'
-        )
-
-    if field.IsClassType():
-      middle = (
-          'const base::Value* inner_message_value;\n'
-          'if (!field_list->Get(i, &inner_message_value)) {{\n'
-          '  goto error;\n'
-          '}}\n'
-          'if (!{inner_class_parser}::ReadFromValue(inner_message_value, message->add_{field_name}())) {{\n'
-          '  goto error;\n'
-          '}}\n'
-          )
-    else:
-      middle = (
-          '{cpp_type} field_value;\n'
-          'if (!field_list->Get{value_type}(i, &field_value)) {{\n'
-          '  goto error;\n'
-          '}}\n'
-          'message->add_{field_name}(field_value);\n'
-          )
-
-    self.Output(
-        prologue + Indented(middle) + '\n}}',
-        field_number=field.JavascriptIndex(),
-        field_name=field.name,
-        cpp_type=field.CppPrimitiveType() if not field.IsClassType() else None,
-        value_type=field.CppValueType() if not field.IsClassType() else None,
-        inner_class_parser=field.CppConverterType()
-        )
-
-  def OptionalMemberFieldRead(self, field):
-    if field.IsClassType():
-      self.Output(
-          'const base::Value* inner_message_value;\n'
-          'if (!dict->Get("{field_number}", &inner_message_value)) {{\n'
-          '  goto error;\n'
-          '}}\n'
-          'if (!{inner_class_parser}::ReadFromValue(inner_message_value, message->mutable_{field_name}())) {{\n'
-          '  goto error;\n'
-          '}}\n'
-          '',
-          field_number=field.JavascriptIndex(),
-          field_name=field.name,
-          inner_class_parser=field.CppConverterType()
-          )
-    else:
-      self.Output(
-          '{cpp_type} field_value;\n'
-          'if (!dict->Get{value_type}("{field_number}", &field_value)) {{\n'
-          '  goto error;\n'
-          '}}\n'
-          'message->set_{field_name}(field_value);\n'
-          '',
-          field_number=field.JavascriptIndex(),
-          field_name=field.name,
-          cpp_type=field.CppPrimitiveType(),
-          value_type=field.CppValueType()
-      )
-
-
-def main():
-  request = plugin.ReadRequestFromStdin()
-  response = plugin_protos.PluginResponse()
-
-  output_dir = request.GetArgs().get('output_dir', '')
-
-  # TODO(cjhopman): This should only be generating files for files listed in
-  # request.file_to_generate. Since we don't actually support dependencies,
-  # only files in file_to_generate should be here, anyway.
-  for proto_file in request.GetAllFiles():
-    plugin.RegisterProtoFile(proto_file)
-
-    writer = CppConverterWriter()
-    writer.WriteProtoFile(proto_file, output_dir)
-
-    converter_filename = proto_file.CppConverterFilename()
-    if output_dir:
-      converter_filename = os.path.join(output_dir,
-                                        os.path.split(converter_filename)[1])
-
-    response.AddFileWithContent(converter_filename, writer.GetValue())
-    if writer.GetErrors():
-      response.AddError('\n'.join(writer.GetErrors()))
-
-  response.WriteToStdout()
-
-
-if __name__ == '__main__':
-  main()