bjoernager/rust
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Reduce boilerplate around infallible folders

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This commit is contained in:
Alan Egerton 2021-12-01 00:55:57 +00:00
parent db7295fa96
commit bfc434b6d0
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GPG key ID: 07CAC3CCA7E0643F
41 changed files with 898 additions and 727 deletions
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6
compiler/rustc_middle/src/macros.rs
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@ -52,7 +52,7 @@ macro_rules! TrivialTypeFoldableImpls {
(for <$tcx:lifetime> { $($ty:ty,)+ }) => {
$(
impl<$tcx> $crate::ty::fold::TypeFoldable<$tcx> for $ty {
fn super_fold_with<F: $crate::ty::fold::TypeFolder<$tcx>>(
fn try_super_fold_with<F: $crate::ty::fold::TypeFolderFallible<$tcx>>(
self,
_: &mut F
) -> ::std::result::Result<$ty, F::Error> {
@ -95,7 +95,7 @@ macro_rules! EnumTypeFoldableImpl {
impl<$($p),*> $crate::ty::fold::TypeFoldable<$tcx> for $s
$(where $($wc)*)*
{
fn super_fold_with<V: $crate::ty::fold::TypeFolder<$tcx>>(
fn try_super_fold_with<V: $crate::ty::fold::TypeFolderFallible<$tcx>>(
self,
folder: &mut V,
) -> ::std::result::Result<Self, V::Error> {
@ -126,7 +126,7 @@ macro_rules! EnumTypeFoldableImpl {
output(
$variant ( $($variant_arg),* ) => {
$variant (
$($crate::ty::fold::TypeFoldable::fold_with($variant_arg, $folder)?),*
$($crate::ty::fold::TypeFoldable::try_fold_with($variant_arg, $folder)?),*
)
}
$($output)*