| #include "file_cache.h" |
| |
| #include <unordered_map> |
| |
| #include "file.h" |
| |
| static MakefileCacheManager* g_instance; |
| |
| MakefileCacheManager::MakefileCacheManager() {} |
| |
| MakefileCacheManager::~MakefileCacheManager() {} |
| |
| MakefileCacheManager* MakefileCacheManager::Get() { |
| return g_instance; |
| } |
| |
| class MakefileCacheManagerImpl : public MakefileCacheManager { |
| public: |
| MakefileCacheManagerImpl() { |
| g_instance = this; |
| } |
| |
| virtual ~MakefileCacheManagerImpl() { |
| for (auto p : cache_) { |
| delete p.second; |
| } |
| } |
| |
| virtual Makefile* ReadMakefile(const string& filename) override { |
| Makefile* result = NULL; |
| auto p = cache_.insert(make_pair(filename, result)); |
| if (p.second) { |
| p.first->second = result = new Makefile(filename); |
| } else { |
| result = p.first->second; |
| } |
| return result; |
| } |
| |
| private: |
| unordered_map<string, Makefile*> cache_; |
| }; |
| |
| MakefileCacheManager* NewMakefileCacheManager() { |
| return new MakefileCacheManagerImpl(); |
| } |