[PATCH] D119363: [clang] Add `ObjCProtocolLoc` to represent protocol references

[David Goldman via Phabricator via cfe-commits]

dgoldman created this revision.
Herald added subscribers: usaxena95, kadircet.
dgoldman requested review of this revision.
Herald added subscribers: cfe-commits, ilya-biryukov.
Herald added a project: clang.

Add `ObjCProtocolLoc` which behaves like `TypeLoc` but for
`ObjCProtocolDecl` references.

RecursiveASTVisitor now synthesizes `ObjCProtocolLoc` during traversal
and the `ObjCProtocolLoc` can be stored in a `DynTypedNode`.

In a follow up patch, I'll update clangd to make use of this
to properly support protocol references for hover + goto definition.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D119363

Files:
  clang/include/clang/AST/ASTFwd.h
  clang/include/clang/AST/ASTTypeTraits.h
  clang/include/clang/AST/RecursiveASTVisitor.h
  clang/include/clang/AST/TypeLoc.h
  clang/lib/AST/ASTTypeTraits.cpp
  clang/lib/AST/ParentMapContext.cpp

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