[PATCH] D58345: [clangd] Using symbol name to map includes for STL symbols.

[Haojian Wu via Phabricator via cfe-commits]

hokein created this revision.
hokein added a reviewer: sammccall.
Herald added a reviewer: jfb.
Herald added subscribers: jdoerfert, jfb, kadircet, arphaman, mgrang, jkorous, MaskRay, ioeric, ilya-biryukov.
Herald added a project: clang.

Using suffix path mapping relies on the STL implementations, and it is
not portable. This patch is using symbol nampe mapping, which should
work with different STL implementations, fix clangd/clangd#9.

To generate the symbol mapping, we parse the cppreference symbol index
page to build a lookup table.

The mapping is not completed, a few TODOs:

- support symbols from different headers (e.g. std::move)
- support STL macros
- support symbols from std's sub-namespaces (e.g. chrono)


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D58345

Files:
  clangd/StdSymbolMap.imp
  clangd/index/CanonicalIncludes.cpp
  clangd/index/CanonicalIncludes.h

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