Process source files and output type information.
Copyright (C) 2006-2024 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>.
This is a simple recursive-descent parser which understands a subset of
the C type grammar.
Rule functions are suffixed _seq if they scan a sequence of items;
_opt if they may consume zero tokens; _seqopt if both are true. The
"consume_" prefix indicates that a sequence of tokens is parsed for
syntactic correctness and then thrown away.
Simple one-token lookahead mechanism.