bjoernager/rust
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Make it possible to make built-in tt syntax extensions

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This commit is contained in:
Paul Stansifer 2012-06-25 15:04:50 -07:00
parent 4f104954a6
commit 4df2654f82
3 changed files with 53 additions and 6 deletions
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13
src/libsyntax/parse/parser.rs
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@ -883,8 +883,17 @@ class parser {
is_ident(self.token) && !self.is_keyword("true") &&
!self.is_keyword("false") {
let pth = self.parse_path_with_tps(true);
hi = pth.span.hi;
ex = expr_path(pth);
/* `!`, as an operator, is prefix, so we know this isn't that */
if self.token == token::NOT {
self.bump();
let m_body = self.parse_token_tree();
let hi = self.span.hi;
ret pexpr(self.mk_mac_expr(lo, hi, mac_invoc_tt(pth,m_body)));
} else {
hi = pth.span.hi;
ex = expr_path(pth);
}
} else {
let lit = self.parse_lit();
hi = lit.span.hi;