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// Copyright 2015 Google Inc. All rights reserved
//
// 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.
// +build ignore
#include "file_cache.h"
#include <unordered_map>
#include "file.h"
MakefileCacheManager::MakefileCacheManager() = default;
MakefileCacheManager::~MakefileCacheManager() = default;
class MakefileCacheManagerImpl : public MakefileCacheManager {
public:
virtual const Makefile& ReadMakefile(const string& filename) override {
auto iter = cache_.find(filename);
if (iter != cache_.end()) {
return iter->second;
}
return (cache_.emplace(filename, filename).first)->second;
}
virtual void GetAllFilenames(unordered_set<string>* out) override {
for (const auto& p : cache_)
out->insert(p.first);
}
private:
unordered_map<string, Makefile> cache_;
};
MakefileCacheManager& MakefileCacheManager::Get() {
static MakefileCacheManagerImpl instance;
return instance;
}
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