bjoernager/rust
bjoernager/rust
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Emit non-fatal error instead

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This commit is contained in:
keatinge 2018-01-06 10:01:54 -05:00
parent 13576dfcd4
commit dcb53d754b
1 changed files with 10 additions and 8 deletions
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18
src/libsyntax/parse/parser.rs
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@ -3431,15 +3431,17 @@ impl<'a> Parser<'a> {
let mut pats = Vec::new();
loop {
pats.push(self.parse_pat()?);
if self.check(&token::BinOp(token::Or)) { self.bump();}
else {
// Accidental use of || instead of | inbetween patterns
if self.token == token::OrOr {
return Err(self.span_fatal_help(
self.span, "unexpected token `||` after pattern",
"did you mean to use `|` to specify multiple patterns instead?"));
}
if self.token == token::OrOr {
self.span_err_help(self.span,
"unexpected token `||` after pattern",
"did you mean to use `|` to specify multiple patterns?");
self.bump();
}
else if self.check(&token::BinOp(token::Or)) {
self.bump();
}
else {
return Ok(pats);
}
};