[PATCH] D125667: [pseudo] A basic implementation of compiling cxx grammar at build time.

[Haojian Wu via Phabricator via cfe-commits]

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The main idea is to compile the cxx grammar at build time, and construct
the core pieces (Grammar, LRTable) of the pseudoparse based on the compiled
data sources.

This is a tiny implementation, which is good for start:

- defines how the public API should look like;
- integrates the cxx grammar compilation workflow with the cmake system.
- onlynonterminal symbols of the C++ grammar are compiled, anything else are still doing the real compilation work at runtime, we can opt-in more bits in the future;
- splits the monolithic clangPsuedo library for better layering;


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125667

Files:
  clang-tools-extra/pseudo/CMakeLists.txt
  clang-tools-extra/pseudo/gen/CMakeLists.txt
  clang-tools-extra/pseudo/gen/Main.cpp
  clang-tools-extra/pseudo/gen/cxx_gen.cmake
  clang-tools-extra/pseudo/include/CMakeLists.txt
  clang-tools-extra/pseudo/include/clang-pseudo/cxx/cxx.h
  clang-tools-extra/pseudo/lib/CMakeLists.txt
  clang-tools-extra/pseudo/lib/cxx/cxx.cpp

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