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author | temporal <temporal@630680e5-0e50-0410-840e-4b1c322b438d> | 2008-07-10 02:12:20 +0000 |
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committer | temporal <temporal@630680e5-0e50-0410-840e-4b1c322b438d> | 2008-07-10 02:12:20 +0000 |
commit | 40ee551715c3a784ea6132dbf604b0e665ca2def (patch) | |
tree | 6e3ea9674be5b0f59106f88f3afa1313854beebf /src/google/protobuf/compiler/cpp/cpp_generator.cc |
Initial checkin.
Diffstat (limited to 'src/google/protobuf/compiler/cpp/cpp_generator.cc')
-rw-r--r-- | src/google/protobuf/compiler/cpp/cpp_generator.cc | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/cpp/cpp_generator.cc b/src/google/protobuf/compiler/cpp/cpp_generator.cc new file mode 100644 index 00000000..200f6358 --- /dev/null +++ b/src/google/protobuf/compiler/cpp/cpp_generator.cc @@ -0,0 +1,135 @@ +// 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_generator.h> + +#include <vector> +#include <utility> + +#include <google/protobuf/compiler/cpp/cpp_file.h> +#include <google/protobuf/compiler/cpp/cpp_helpers.h> +#include <google/protobuf/io/printer.h> +#include <google/protobuf/io/zero_copy_stream.h> +#include <google/protobuf/descriptor.pb.h> +#include <google/protobuf/stubs/strutil.h> + +namespace google { +namespace protobuf { +namespace compiler { +namespace cpp { + +namespace { + +// Parses a set of comma-delimited name/value pairs, e.g.: +// "foo=bar,baz,qux=corge" +// parses to the pairs: +// ("foo", "bar"), ("baz", ""), ("qux", "corge") +void ParseOptions(const string& text, vector<pair<string, string> >* output) { + vector<string> parts; + SplitStringUsing(text, ",", &parts); + + for (int i = 0; i < parts.size(); i++) { + string::size_type equals_pos = parts[i].find_first_of('='); + pair<string, string> value; + if (equals_pos == string::npos) { + value.first = parts[i]; + value.second = ""; + } else { + value.first = parts[i].substr(0, equals_pos); + value.second = parts[i].substr(equals_pos + 1); + } + output->push_back(value); + } +} + +} // namespace + +CppGenerator::CppGenerator() {} +CppGenerator::~CppGenerator() {} + +bool CppGenerator::Generate(const FileDescriptor* file, + const string& parameter, + OutputDirectory* output_directory, + string* error) const { + vector<pair<string, string> > options; + ParseOptions(parameter, &options); + + // ----------------------------------------------------------------- + // parse generator options + + // TODO(kenton): If we ever have more options, we may want to create a + // class that encapsulates them which we can pass down to all the + // generator classes. Currently we pass dllexport_decl down to all of + // them via the constructors, but we don't want to have to add another + // constructor parameter for every option. + + // If the dllexport_decl option is passed to the compiler, we need to write + // it in front of every symbol that should be exported if this .proto is + // compiled into a Windows DLL. E.g., if the user invokes the protocol + // compiler as: + // protoc --cpp_out=dllexport_decl=FOO_EXPORT:outdir foo.proto + // then we'll define classes like this: + // class FOO_EXPORT Foo { + // ... + // } + // FOO_EXPORT is a macro which should expand to __declspec(dllexport) or + // __declspec(dllimport) depending on what is being compiled. + string dllexport_decl; + + for (int i = 0; i < options.size(); i++) { + if (options[i].first == "dllexport_decl") { + dllexport_decl = options[i].second; + } else { + *error = "Unknown generator option: " + options[i].first; + return false; + } + } + + // ----------------------------------------------------------------- + + + string basename = StripProto(file->name()); + basename.append(".pb"); + + FileGenerator file_generator(file, dllexport_decl); + + // Generate header. + { + scoped_ptr<io::ZeroCopyOutputStream> output( + output_directory->Open(basename + ".h")); + io::Printer printer(output.get(), '$'); + file_generator.GenerateHeader(&printer); + } + + // Generate cc file. + { + scoped_ptr<io::ZeroCopyOutputStream> output( + output_directory->Open(basename + ".cc")); + io::Printer printer(output.get(), '$'); + file_generator.GenerateSource(&printer); + } + + return true; +} + +} // namespace cpp +} // namespace compiler +} // namespace protobuf +} // namespace google |