diff options
Diffstat (limited to 'src/libsyntax/parse')
| -rw-r--r-- | src/libsyntax/parse/parser.rs | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs index c2c3e5a6855..a27fc070ebe 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -551,20 +551,33 @@ impl<'a> Parser<'a> { expected.dedup(); let expect = tokens_to_string(&expected[..]); let actual = self.this_token_to_string(); - Err(self.fatal( - &(if expected.len() > 1 { - (format!("expected one of {}, found `{}`", - expect, - actual)) - } else if expected.is_empty() { - (format!("unexpected token: `{}`", - actual)) + let (msg_exp, (label_sp, label_exp)) = if expected.len() > 1 { + let short_expect = if expected.len() > 6 { + format!("{} possible tokens", expected.len()) } else { - (format!("expected {}, found `{}`", - expect, - actual)) - })[..] - )) + expect.clone() + }; + (format!("expected one of {}, found `{}`", expect, actual), + (self.prev_span.next_point(), format!("expected one of {} here", short_expect))) + } else if expected.is_empty() { + (format!("unexpected token: `{}`", actual), + (self.prev_span, "unexpected token after this".to_string())) + } else { + (format!("expected {}, found `{}`", expect, actual), + (self.prev_span.next_point(), format!("expected {} here", expect))) + }; + let mut err = self.fatal(&msg_exp); + let sp = if self.token == token::Token::Eof { + // This is EOF, don't want to point at the following char, but rather the last token + self.prev_span + } else { + label_sp + }; + err.span_label(sp, &label_exp); + if !sp.source_equal(&self.span) { + err.span_label(self.span, &"unexpected token"); + } + Err(err) } } |
