Implement negative bounds

2023-04-25 05:15:50 +00:00
parent 98c33e47a4
commit 6e01e910cb
33 changed files with 363 additions and 188 deletions
--- a/compiler/rustc_parse/src/parser/generics.rs
+++ b/compiler/rustc_parse/src/parser/generics.rs
@@ -78,7 +78,7 @@ impl<'a> Parser<'a> {
                }
                self.restore_snapshot(snapshot);
            }
-            self.parse_generic_bounds(colon_span)?
+            self.parse_generic_bounds()?
        } else {
            Vec::new()
        };
@@ -419,7 +419,7 @@ impl<'a> Parser<'a> {
        // or with mandatory equality sign and the second type.
        let ty = self.parse_ty_for_where_clause()?;
        if self.eat(&token::Colon) {
-            let bounds = self.parse_generic_bounds(Some(self.prev_token.span))?;
+            let bounds = self.parse_generic_bounds()?;
            Ok(ast::WherePredicate::BoundPredicate(ast::WhereBoundPredicate {
                span: lo.to(self.prev_token.span),
                bound_generic_params: lifetime_defs,