bjoernager/rust
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preserve context in parsing of self varref

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This commit is contained in:
John Clements 2014-07-06 15:11:44 -07:00
parent 728b269199
commit 06b64345d6
1 changed files with 11 additions and 9 deletions
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20
src/libsyntax/parse/parser.rs
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@ -541,12 +541,13 @@ impl<'a> Parser<'a> {
// if the next token is the given keyword, eat it and return
// true. Otherwise, return false.
pub fn eat_keyword(&mut self, kw: keywords::Keyword) -> bool {
let is_kw = match self.token {
token::IDENT(sid, false) => kw.to_ident().name == sid.name,
match self.token {
token::IDENT(sid, false) if kw.to_ident().name == sid.name => {
self.bump();
true
}
_ => false
};
if is_kw { self.bump() }
is_kw
}
}
// if the given word is not a keyword, signal an error.
@ -1917,7 +1918,7 @@ impl<'a> Parser<'a> {
return self.mk_expr(blk.span.lo, blk.span.hi,
ExprBlock(blk));
},
_ if token::is_bar(&self.token) => {
token::BINOP(token::OR) | token::OROR => {
return self.parse_lambda_expr();
},
_ if self.eat_keyword(keywords::Proc) => {
@ -1933,8 +1934,9 @@ impl<'a> Parser<'a> {
});
return self.mk_expr(lo, body.span.hi, ExprProc(decl, fakeblock));
},
_ if self.eat_keyword(keywords::Self) => {
let path = ast_util::ident_to_path(mk_sp(lo, hi), special_idents::self_);
token::IDENT(id @ ast::Ident{name:token::SELF_KEYWORD_NAME,ctxt:_},false) => {
self.bump();
let path = ast_util::ident_to_path(mk_sp(lo, hi), id);
ex = ExprPath(path);
hi = self.last_span.hi;
}
@ -1982,7 +1984,7 @@ impl<'a> Parser<'a> {
},
token::LBRACKET => {
self.bump();
if self.token == token::RBRACKET {
// Empty vector.
self.bump();