67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
// Copyright 2015 Google Inc. All rights reserved
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build ignore
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#include "file_cache.h"
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#include <unordered_map>
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#include "file.h"
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static MakefileCacheManager* g_instance;
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MakefileCacheManager::MakefileCacheManager() {}
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MakefileCacheManager::~MakefileCacheManager() {}
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MakefileCacheManager* MakefileCacheManager::Get() {
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return g_instance;
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}
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class MakefileCacheManagerImpl : public MakefileCacheManager {
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public:
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MakefileCacheManagerImpl() {
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g_instance = this;
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}
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virtual ~MakefileCacheManagerImpl() {
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for (auto p : cache_) {
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delete p.second;
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}
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}
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virtual Makefile* ReadMakefile(const string& filename) override {
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Makefile* result = NULL;
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auto p = cache_.emplace(filename, result);
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if (p.second) {
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p.first->second = result = new Makefile(filename);
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} else {
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result = p.first->second;
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}
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return result;
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}
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virtual void GetAllFilenames(unordered_set<string>* out) override {
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for (const auto& p : cache_)
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out->insert(p.first);
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}
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private:
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unordered_map<string, Makefile*> cache_;
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};
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MakefileCacheManager* NewMakefileCacheManager() {
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return new MakefileCacheManagerImpl();
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}
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