Provide default implementations for a couple of Store methods
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					 4 changed files with 20 additions and 26 deletions
				
			
		|  | @ -71,9 +71,6 @@ public: | |||
|         PathSet & referrers) override | ||||
|     { notImpl(); } | ||||
| 
 | ||||
|     PathSet queryValidDerivers(const Path & path) override | ||||
|     { return {}; } | ||||
| 
 | ||||
|     PathSet queryDerivationOutputs(const Path & path) override | ||||
|     { notImpl(); } | ||||
| 
 | ||||
|  | @ -83,13 +80,6 @@ public: | |||
|     Path queryPathFromHashPart(const string & hashPart) override | ||||
|     { notImpl(); } | ||||
| 
 | ||||
|     PathSet querySubstitutablePaths(const PathSet & paths) override | ||||
|     { return {}; } | ||||
| 
 | ||||
|     void querySubstitutablePathInfos(const PathSet & paths, | ||||
|         SubstitutablePathInfos & infos) override | ||||
|     { } | ||||
| 
 | ||||
|     bool wantMassQuery() override { return wantMassQuery_; } | ||||
| 
 | ||||
|     void addToStore(const ValidPathInfo & info, const ref<std::string> & nar, | ||||
|  | @ -121,21 +111,12 @@ public: | |||
|     void addIndirectRoot(const Path & path) override | ||||
|     { notImpl(); } | ||||
| 
 | ||||
|     void syncWithGC() override | ||||
|     { } | ||||
| 
 | ||||
|     Roots findRoots() override | ||||
|     { notImpl(); } | ||||
| 
 | ||||
|     void collectGarbage(const GCOptions & options, GCResults & results) override | ||||
|     { notImpl(); } | ||||
| 
 | ||||
|     void optimiseStore() override | ||||
|     { } | ||||
| 
 | ||||
|     bool verifyStore(bool checkContents, bool repair) override | ||||
|     { return true; } | ||||
| 
 | ||||
|     ref<FSAccessor> getFSAccessor() override; | ||||
| 
 | ||||
|     void addSignatures(const Path & storePath, const StringSet & sigs) override | ||||
|  |  | |||
|  | @ -285,6 +285,19 @@ bool Store::isValidPath(const Path & storePath) | |||
| } | ||||
| 
 | ||||
| 
 | ||||
| /* Default implementation for stores that only implement
 | ||||
|    queryPathInfoUncached(). */ | ||||
| bool Store::isValidPathUncached(const Path & path) | ||||
| { | ||||
|     try { | ||||
|         queryPathInfo(path); | ||||
|         return true; | ||||
|     } catch (InvalidPath &) { | ||||
|         return false; | ||||
|     } | ||||
| } | ||||
| 
 | ||||
| 
 | ||||
| ref<const ValidPathInfo> Store::queryPathInfo(const Path & storePath) | ||||
| { | ||||
|     std::promise<ref<ValidPathInfo>> promise; | ||||
|  |  | |||
|  | @ -320,7 +320,7 @@ public: | |||
| 
 | ||||
| protected: | ||||
| 
 | ||||
|     virtual bool isValidPathUncached(const Path & path) = 0; | ||||
|     virtual bool isValidPathUncached(const Path & path); | ||||
| 
 | ||||
| public: | ||||
| 
 | ||||
|  | @ -360,7 +360,7 @@ public: | |||
|        output.  (Note that the result of `queryDeriver()' is the | ||||
|        derivation that was actually used to produce `path', which may | ||||
|        not exist anymore.) */ | ||||
|     virtual PathSet queryValidDerivers(const Path & path) = 0; | ||||
|     virtual PathSet queryValidDerivers(const Path & path) { return {}; }; | ||||
| 
 | ||||
|     /* Query the outputs of the derivation denoted by `path'. */ | ||||
|     virtual PathSet queryDerivationOutputs(const Path & path) = 0; | ||||
|  | @ -373,13 +373,13 @@ public: | |||
|     virtual Path queryPathFromHashPart(const string & hashPart) = 0; | ||||
| 
 | ||||
|     /* Query which of the given paths have substitutes. */ | ||||
|     virtual PathSet querySubstitutablePaths(const PathSet & paths) = 0; | ||||
|     virtual PathSet querySubstitutablePaths(const PathSet & paths) { return {}; }; | ||||
| 
 | ||||
|     /* Query substitute info (i.e. references, derivers and download
 | ||||
|        sizes) of a set of paths.  If a path does not have substitute | ||||
|        info, it's omitted from the resulting ‘infos’ map. */ | ||||
|     virtual void querySubstitutablePathInfos(const PathSet & paths, | ||||
|         SubstitutablePathInfos & infos) = 0; | ||||
|         SubstitutablePathInfos & infos) { return; }; | ||||
| 
 | ||||
|     virtual bool wantMassQuery() { return false; } | ||||
| 
 | ||||
|  | @ -454,7 +454,7 @@ public: | |||
|          permanent root and sees our's. | ||||
| 
 | ||||
|        In either case the permanent root is seen by the collector. */ | ||||
|     virtual void syncWithGC() = 0; | ||||
|     virtual void syncWithGC() { }; | ||||
| 
 | ||||
|     /* Find the roots of the garbage collector.  Each root is a pair
 | ||||
|        (link, storepath) where `link' is the path of the symlink | ||||
|  | @ -485,11 +485,11 @@ public: | |||
| 
 | ||||
|     /* Optimise the disk space usage of the Nix store by hard-linking files
 | ||||
|        with the same contents. */ | ||||
|     virtual void optimiseStore() = 0; | ||||
|     virtual void optimiseStore() { }; | ||||
| 
 | ||||
|     /* Check the integrity of the Nix store.  Returns true if errors
 | ||||
|        remain. */ | ||||
|     virtual bool verifyStore(bool checkContents, bool repair) = 0; | ||||
|     virtual bool verifyStore(bool checkContents, bool repair) { return false; }; | ||||
| 
 | ||||
|     /* Return an object to access files in the Nix store. */ | ||||
|     virtual ref<FSAccessor> getFSAccessor() = 0; | ||||
|  |  | |||
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