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Update the new macro demo.

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This commit is contained in:
Paul Stansifer 2012-07-02 18:07:33 -07:00
parent 0c6fe6470e
commit f940653720
1 changed files with 21 additions and 7 deletions
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28
src/libsyntax/parse/parser.rs
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@ -1114,22 +1114,36 @@ class parser {
/* temporary */
fn parse_tt_mac_demo() -> @expr {
let name_idx = @mut 0u;
let ms = self.parse_seq(token::LBRACE, token::RBRACE,
common::seq_sep_none(),
|p| p.parse_matcher(@mut 0u)).node;
let tt = self.parse_token_tree();
//let tt_rhs = self.parse_token_tree();
alt tt {
tt_delim(tts) {
|p| p.parse_matcher(name_idx)).node;
self.quote_depth += 1u;
let tt_rhs= self.parse_token_tree();
self.quote_depth -= 1u;
let tt_readme = self.parse_token_tree();
alt (tt_readme, tt_rhs) {
(tt_delim(tts), tt_delim(tts_rhs)) {
let rdr = lexer::new_tt_reader(self.reader.span_diag(),
self.reader.interner(), none, tts)
as reader;
ext::tt::earley_parser::parse(self.sess, self.cfg, rdr, ms);
let matches = ext::tt::earley_parser::parse
(self.sess, self.cfg, rdr, ms);
let transcriber = ext::tt::transcribe::new_tt_reader
(self.reader.span_diag(), self.reader.interner(),
some(matches), tts_rhs);
let res_parser = parser(self.sess, self.cfg,
transcriber as reader,
SOURCE_FILE);
ret res_parser.parse_expr();
}
_ { fail; }
}
ret self.mk_expr(0u, 0u, expr_break);
}
fn parse_matcher(name_idx: @mut uint) -> matcher {