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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.
// http://code.google.com/p/protobuf/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include <google/protobuf/compiler/cpp/cpp_extension.h>
#include <google/protobuf/compiler/cpp/cpp_helpers.h>
#include <google/protobuf/stubs/strutil.h>
#include <google/protobuf/io/printer.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {
ExtensionGenerator::ExtensionGenerator(const FieldDescriptor* descriptor,
const string& dllexport_decl)
: descriptor_(descriptor),
dllexport_decl_(dllexport_decl) {
// Construct type_traits_.
if (descriptor_->is_repeated()) {
type_traits_ = "Repeated";
}
switch (descriptor_->cpp_type()) {
case FieldDescriptor::CPPTYPE_ENUM:
type_traits_.append("EnumTypeTraits< ");
type_traits_.append(ClassName(descriptor_->enum_type(), true));
type_traits_.append(" >");
break;
case FieldDescriptor::CPPTYPE_STRING:
type_traits_.append("StringTypeTraits");
break;
case FieldDescriptor::CPPTYPE_MESSAGE:
type_traits_.append("MessageTypeTraits< ");
type_traits_.append(ClassName(descriptor_->message_type(), true));
type_traits_.append(" >");
break;
default:
type_traits_.append("PrimitiveTypeTraits< ");
type_traits_.append(PrimitiveTypeName(descriptor_->cpp_type()));
type_traits_.append(" >");
break;
}
}
ExtensionGenerator::~ExtensionGenerator() {}
void ExtensionGenerator::GenerateDeclaration(io::Printer* printer) {
map<string, string> vars;
vars["extendee" ] = ClassName(descriptor_->containing_type(), true);
vars["type_traits"] = type_traits_;
vars["name" ] = descriptor_->name();
// If this is a class member, it needs to be declared "static". Otherwise,
// it needs to be "extern".
vars["qualifier"] =
(descriptor_->extension_scope() == NULL) ? "extern" : "static";
if (!dllexport_decl_.empty()) {
vars["qualifier"] = dllexport_decl_ + " " + vars["qualifier"];
}
printer->Print(vars,
"$qualifier$ ::google::protobuf::internal::ExtensionIdentifier< $extendee$,\n"
" ::google::protobuf::internal::$type_traits$ > $name$;\n");
}
void ExtensionGenerator::GenerateDefinition(io::Printer* printer) {
map<string, string> vars;
vars["extendee" ] = ClassName(descriptor_->containing_type(), true);
vars["number" ] = SimpleItoa(descriptor_->number());
vars["type_traits"] = type_traits_;
vars["name" ] = descriptor_->name();
// If this is a class member, it needs to be declared in its class scope.
vars["scope"] = (descriptor_->extension_scope() == NULL) ? "" :
ClassName(descriptor_->extension_scope(), false) + "::";
printer->Print(vars,
"::google::protobuf::internal::ExtensionIdentifier< $extendee$,\n"
" ::google::protobuf::internal::$type_traits$ > $scope$$name$($number$);\n");
}
} // namespace cpp
} // namespace compiler
} // namespace protobuf
} // namespace google
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