bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Reduce boilerplate around infallible folders

Browse source
This commit is contained in:
Alan Egerton 2021-12-01 00:55:57 +00:00
parent db7295fa96
commit bfc434b6d0
No known key found for this signature in database
GPG key ID: 07CAC3CCA7E0643F
41 changed files with 898 additions and 727 deletions
Download patch file Download diff file Expand all files Collapse all files

4
compiler/rustc_macros/src/type_foldable.rs
View file

@ -17,7 +17,7 @@ pub fn type_foldable_derive(mut s: synstructure::Structure<'_>) -> proc_macro2::
vi.construct(|_, index| {
let bind = &bindings[index];
quote! {
::rustc_middle::ty::fold::TypeFoldable::fold_with(#bind, __folder)?
::rustc_middle::ty::fold::TypeFoldable::try_fold_with(#bind, __folder)?
}
})
});
@ -25,7 +25,7 @@ pub fn type_foldable_derive(mut s: synstructure::Structure<'_>) -> proc_macro2::
s.bound_impl(
quote!(::rustc_middle::ty::fold::TypeFoldable<'tcx>),
quote! {
fn super_fold_with<__F: ::rustc_middle::ty::fold::TypeFolder<'tcx>>(
fn try_super_fold_with<__F: ::rustc_middle::ty::fold::TypeFolderFallible<'tcx>>(
self,
__folder: &mut __F
) -> Result<Self, __F::Error> {