bjoernager/rust
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Implement negative bounds

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This commit is contained in:
Michael Goulet 2023-04-25 05:15:50 +00:00
parent 98c33e47a4
commit 6e01e910cb
33 changed files with 363 additions and 188 deletions
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10
compiler/rustc_parse/src/parser/item.rs
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@ -788,11 +788,7 @@ impl<'a> Parser<'a> {
// Parse optional colon and supertrait bounds.
let had_colon = self.eat(&token::Colon);
let span_at_colon = self.prev_token.span;
let bounds = if had_colon {
self.parse_generic_bounds(Some(self.prev_token.span))?
} else {
Vec::new()
};
let bounds = if had_colon { self.parse_generic_bounds()? } else { Vec::new() };
let span_before_eq = self.prev_token.span;
if self.eat(&token::Eq) {
@ -802,7 +798,7 @@ impl<'a> Parser<'a> {
self.sess.emit_err(errors::BoundsNotAllowedOnTraitAliases { span });
}
let bounds = self.parse_generic_bounds(None)?;
let bounds = self.parse_generic_bounds()?;
generics.where_clause = self.parse_where_clause()?;
self.expect_semi()?;
@ -883,7 +879,7 @@ impl<'a> Parser<'a> {
// Parse optional colon and param bounds.
let bounds =
if self.eat(&token::Colon) { self.parse_generic_bounds(None)? } else { Vec::new() };
if self.eat(&token::Colon) { self.parse_generic_bounds()? } else { Vec::new() };
let before_where_clause = self.parse_where_clause()?;
let ty = if self.eat(&token::Eq) { Some(self.parse_ty()?) } else { None };