Push getFSAccessor unsupported(...) down Store class hierarchy

More progress on issue #5729.

Instead of having it by the default method in `Store` itself, have it be
the implementation in `DummyStore` and `LegacySSHStore`. Then just the
implementations which fail to provide the method pay the "penalty" of
dealing with the icky `unimplemented` function for non-compliance.

Combined with my other recent PRs, this finally makes `Store` have no
`unsupported` calls!
This commit is contained in:
John Ericson 2023-04-13 13:38:12 -04:00
parent ef0b48377d
commit ee97f107e8
3 changed files with 7 additions and 2 deletions

View file

@ -71,6 +71,9 @@ struct DummyStore : public virtual DummyStoreConfig, public virtual Store
void queryRealisationUncached(const DrvOutput &,
Callback<std::shared_ptr<const Realisation>> callback) noexcept override
{ callback(nullptr); }
virtual ref<FSAccessor> getFSAccessor() override
{ unsupported("getFSAccessor"); }
};
static RegisterStoreImplementation<DummyStore, DummyStoreConfig> regDummyStore;

View file

@ -342,6 +342,9 @@ public:
void ensurePath(const StorePath & path) override
{ unsupported("ensurePath"); }
virtual ref<FSAccessor> getFSAccessor() override
{ unsupported("getFSAccessor"); }
void computeFSClosure(const StorePathSet & paths,
StorePathSet & out, bool flipDirection = false,
bool includeOutputs = false, bool includeDerivers = false) override

View file

@ -678,8 +678,7 @@ public:
/**
* @return An object to access files in the Nix store.
*/
virtual ref<FSAccessor> getFSAccessor()
{ unsupported("getFSAccessor"); }
virtual ref<FSAccessor> getFSAccessor() = 0;
/**
* Repair the contents of the given path by redownloading it using