From 4727532e958dbb961f4ddafa90e8466f12f54cca Mon Sep 17 00:00:00 2001 From: Graydon Hoare Date: Wed, 18 Aug 2010 15:41:13 -0700 Subject: Simplify lexer/parser structure to use stdio_reader. --- src/comp/fe/parser.rs | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'src/comp/fe/parser.rs') diff --git a/src/comp/fe/parser.rs b/src/comp/fe/parser.rs index 406c8119..02de22a7 100644 --- a/src/comp/fe/parser.rs +++ b/src/comp/fe/parser.rs @@ -1,3 +1,25 @@ +import std._io; + +state type parser = + state obj { + state fn peek() -> token.token; + state fn bump(); + }; + +fn new_parser(str path) -> parser { + state obj stdio_parser(mutable token.token tok, + _io.stdio_reader rdr) + { + state fn peek() -> token.token { + ret tok; + } + state fn bump() { + tok = lexer.next_token(rdr); + } + } + auto rdr = _io.new_stdio_reader(path); + ret stdio_parser(lexer.next_token(rdr), rdr); +} // // Local Variables: -- cgit v1.2.3