Creates a one to many mapping, by returning all the possible locations
providing a symbol. Also includes an "is definition" signal for the
location, that can be used for ranking afterwards.
This also takes care of stdlib symbols by having a variant of locations.
Depends on D135859.
Differential Revision: https://reviews.llvm.org/D135953
- replace SymbolLocation std::variant with enum-exposing version similar to
those in types.cpp. There's no appropriate implementation file, added
LocateSymbol.cpp in anticipation of locateDecl/locateMacro.
- FindHeaders is not part of the public Analysis interface, so should not
be implemented/tested there (just code organization)
- rename findIncludeHeaders->findHeaders to avoid confusion with Include concept
Differential Revision: https://reviews.llvm.org/D137825
