diff options
Diffstat (limited to 'src/libsyntax/parse/token.rs')
| -rw-r--r-- | src/libsyntax/parse/token.rs | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/src/libsyntax/parse/token.rs b/src/libsyntax/parse/token.rs index a316733bdb5..4888654fac9 100644 --- a/src/libsyntax/parse/token.rs +++ b/src/libsyntax/parse/token.rs @@ -152,6 +152,8 @@ pub enum Token { Dot, DotDot, DotDotDot, + DotDotEq, + DotEq, // HACK(durka42) never produced by the parser, only used for libproc_macro Comma, Semi, Colon, @@ -212,18 +214,19 @@ impl Token { pub fn can_begin_expr(&self) -> bool { match *self { Ident(ident) => ident_can_begin_expr(ident), // value name or keyword - OpenDelim(..) | // tuple, array or block - Literal(..) | // literal - Not | // operator not - BinOp(Minus) | // unary minus - BinOp(Star) | // dereference - BinOp(Or) | OrOr | // closure - BinOp(And) | // reference - AndAnd | // double reference - DotDot | DotDotDot | // range notation - Lt | BinOp(Shl) | // associated path - ModSep | // global path - Pound => true, // expression attributes + OpenDelim(..) | // tuple, array or block + Literal(..) | // literal + Not | // operator not + BinOp(Minus) | // unary minus + BinOp(Star) | // dereference + BinOp(Or) | OrOr | // closure + BinOp(And) | // reference + AndAnd | // double reference + DotDot | DotDotDot | DotDotEq | // range notation + // SNAP remove DotDotDot + Lt | BinOp(Shl) | // associated path + ModSep | // global path + Pound => true, // expression attributes Interpolated(ref nt) => match nt.0 { NtIdent(..) | NtExpr(..) | NtBlock(..) | NtPath(..) => true, _ => false, @@ -402,10 +405,12 @@ impl Token { Dot => match joint { Dot => DotDot, DotDot => DotDotDot, + DotEq => DotDotEq, _ => return None, }, DotDot => match joint { Dot => DotDotDot, + Eq => DotDotEq, _ => return None, }, Colon => match joint { @@ -413,9 +418,9 @@ impl Token { _ => return None, }, - Le | EqEq | Ne | Ge | AndAnd | OrOr | Tilde | BinOpEq(..) | At | DotDotDot | Comma | - Semi | ModSep | RArrow | LArrow | FatArrow | Pound | Dollar | Question | - OpenDelim(..) | CloseDelim(..) | Underscore => return None, + Le | EqEq | Ne | Ge | AndAnd | OrOr | Tilde | BinOpEq(..) | At | DotDotDot | DotEq | + DotDotEq | Comma | Semi | ModSep | RArrow | LArrow | FatArrow | Pound | Dollar | + Question | OpenDelim(..) | CloseDelim(..) | Underscore => return None, Literal(..) | Ident(..) | Lifetime(..) | Interpolated(..) | DocComment(..) | Whitespace | Comment | Shebang(..) | Eof => return None, |