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Add helper to create the trait ref for a lang item

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This commit is contained in:
Oli Scherer 2022-11-17 14:39:19 +00:00
parent 25c4760b5d
commit ad57f88d3f
10 changed files with 51 additions and 66 deletions
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10
compiler/rustc_middle/src/ty/context.rs
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@ -2990,6 +2990,16 @@ impl<'tcx> TyCtxtAt<'tcx> {
pub fn ty_error_with_message(self, msg: &str) -> Ty<'tcx> {
self.tcx.ty_error_with_message(self.span, msg)
}
pub fn mk_trait_ref(
self,
trait_lang_item: LangItem,
self_ty: Ty<'tcx>,
rest: impl IntoIterator<Item = ty::GenericArg<'tcx>, IntoIter: ExactSizeIterator>,
) -> ty::TraitRef<'tcx> {
let trait_def_id = self.require_lang_item(trait_lang_item, Some(self.span));
self.tcx.mk_trait_ref(trait_def_id, self_ty, rest)
}
}
/// Parameter attributes that can only be determined by examining the body of a function instead