ClangBasic dependency eliminated by replacing our usage of
tok::getPunctuatorSpelling etc with direct use of the *.def file.
Implicit dependencies on clang-tablegen-targets removed as we manage to avoid
any transitive tablegen deps.
After these changes, `ninja clean; ninja pseudo-gen` runs 169 actions only
(basically Support and Demangle).
Differential Revision: https://reviews.llvm.org/D126731
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;
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D125667
Sam McCall