[PATCH] D146656: [clang][ExtractAPI] Refactor ExtractAPIVisitor to make it more extensible

[Daniel Grumberg via Phabricator via cfe-commits]

dang created this revision.
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Use CRTP to enable creating statically dispatched subclasses of
ExtractAPIVisitor.
This enables adding extension points and customising the behavior more
easily.

This is used in CXExtractAPI.cpp to create a specialized visitor for
Libclang as well as streamlining the batch implementation in ExtractAPIConsumer.cpp

[clang][ExtractAPI] Improve tests for clang_getSymbolGraphForCursor

Adds a new mode to c-index-test that can fetch a single symbol symbol
graph for a given source location. This way we can be more precise when
writing tests for clang_getSymbolGraphForCursor.
Additionaly this makes it easier to debug the function.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146656

Files:
  clang/include/clang/ExtractAPI/ExtractAPIVisitor.h
  clang/include/clang/ExtractAPI/TypedefUnderlyingTypeResolver.h
  clang/lib/ExtractAPI/CMakeLists.txt
  clang/lib/ExtractAPI/DeclarationFragments.cpp
  clang/lib/ExtractAPI/ExtractAPIConsumer.cpp
  clang/lib/ExtractAPI/ExtractAPIVisitor.cpp
  clang/lib/ExtractAPI/TypedefUnderlyingTypeResolver.cpp
  clang/lib/ExtractAPI/TypedefUnderlyingTypeResolver.h
  clang/test/Index/extract-api-cursor.m
  clang/tools/c-index-test/c-index-test.c
  clang/tools/libclang/CXExtractAPI.cpp

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