bjoernager/rust
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Avoid unnecessary MetaItem/Attribute conversions.

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`check_builtin_attribute` calls `parse_meta` to convert an `Attribute`
to a `MetaItem`, which it then checks. However, many callers of
`check_builtin_attribute` start with a `MetaItem`, and then convert it
to an `Attribute` by calling `cx.attribute(meta_item)`. This `MetaItem`
to `Attribute` to `MetaItem` conversion is silly.

This commit adds a new function `check_builtin_meta_item`, which can be
called instead from these call sites. `check_builtin_attribute` also now
calls it. The commit also renames `check_meta` as `check_attr` to better
match its arguments.
This commit is contained in:
Nicholas Nethercote 2022-11-24 16:00:57 +11:00
parent 2585bcea0b
commit c9ae38c71e
6 changed files with 44 additions and 29 deletions
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2
compiler/rustc_ast_passes/src/ast_validation.rs
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@ -912,7 +912,7 @@ fn validate_generic_param_order(
impl<'a> Visitor<'a> for AstValidator<'a> {
fn visit_attribute(&mut self, attr: &Attribute) {
validate_attr::check_meta(&self.session.parse_sess, attr);
validate_attr::check_attr(&self.session.parse_sess, attr);
}
fn visit_expr(&mut self, expr: &'a Expr) {