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parser: Remove look_ahead_span

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This commit is contained in:
Vadim Petrochenkov 2019-06-07 13:57:57 +03:00
parent 6eae6b0fe9
commit 3dbee57dae
2 changed files with 5 additions and 18 deletions
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14
src/libsyntax/parse/parser.rs
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@ -1064,18 +1064,6 @@ impl<'a> Parser<'a> {
})
}
crate fn look_ahead_span(&self, dist: usize) -> Span {
if dist == 0 {
return self.token.span
}
match self.token_cursor.frame.tree_cursor.look_ahead(dist - 1) {
Some(TokenTree::Token(token)) => token.span,
Some(TokenTree::Delimited(span, ..)) => span.entire(),
None => self.look_ahead_span(dist - 1),
}
}
/// Returns whether any of the given keywords are `dist` tokens ahead of the current one.
fn is_keyword_ahead(&self, dist: usize, kws: &[Symbol]) -> bool {
self.look_ahead(dist, |t| kws.iter().any(|&kw| t.is_keyword(kw)))
@ -3067,7 +3055,7 @@ impl<'a> Parser<'a> {
let mut err =
self.sess.span_diagnostic.struct_span_err(self.token.span, &msg);
let span_after_type = parser_snapshot_after_type.token.span;
err.span_label(self.look_ahead_span(1).to(span_after_type),
err.span_label(self.look_ahead(1, |t| t.span).to(span_after_type),
"interpreted as generic arguments");
err.span_label(self.token.span, format!("not interpreted as {}", op_noun));