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Commit 459e142

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eggyaleggyal
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Move folding and visiting traits into type library
1 parent 9fa6bb2 commit 459e142

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10 files changed

+805
-755
lines changed

10 files changed

+805
-755
lines changed

‎compiler/rustc_middle/src/lib.rs‎

Lines changed: 0 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -48,12 +48,10 @@
4848
#![feature(associated_type_bounds)]
4949
#![feature(rustc_attrs)]
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#![feature(control_flow_enum)]
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#![feature(associated_type_defaults)]
5251
#![feature(trusted_step)]
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#![feature(try_blocks)]
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#![feature(try_reserve_kind)]
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#![feature(nonzero_ops)]
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#![feature(unwrap_infallible)]
5755
#![feature(decl_macro)]
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#![feature(drain_filter)]
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#![feature(intra_doc_pointers)]

‎compiler/rustc_middle/src/macros.rs‎

Lines changed: 4 additions & 170 deletions
Original file line numberDiff line numberDiff line change
@@ -100,35 +100,11 @@ macro_rules! TrivialTypeTraversalImpls {
100100
};
101101

102102
($($ty:ty,)+) => {
103-
$(
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impl<I: $crate::ty::Interner> $crate::ty::fold::ir::TypeFoldable<I> for $ty {
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fn try_fold_with<F: $crate::ty::fold::ir::FallibleTypeFolder<I>>(
106-
self,
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_: &mut F,
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) -> ::std::result::Result<Self, F::Error> {
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Ok(self)
110-
}
111-
112-
#[inline]
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fn fold_with<F: $crate::ty::fold::ir::TypeFolder<I>>(
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self,
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_: &mut F,
116-
) -> Self {
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self
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}
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}
120-
121-
impl<I: $crate::ty::Interner> $crate::ty::visit::ir::TypeVisitable<I> for $ty {
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#[inline]
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fn visit_with<F: $crate::ty::visit::ir::TypeVisitor<I>>(
124-
&self,
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_: &mut F)
126-
-> ::std::ops::ControlFlow<F::BreakTy>
127-
{
128-
::std::ops::ControlFlow::Continue(())
129-
}
103+
TrivialTypeTraversalImpls! {
104+
for<'tcx> {
105+
$($ty,)+
130106
}
131-
)+
107+
}
132108
};
133109
}
134110

@@ -139,145 +115,3 @@ macro_rules! TrivialTypeTraversalAndLiftImpls {
139115
CloneLiftImpls! { $($t)* }
140116
}
141117
}
142-
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#[macro_export]
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macro_rules! EnumTypeTraversalImpl {
145-
(impl<$($p:tt),*> TypeFoldable<$tcx:tt> for $s:path {
146-
$($variants:tt)*
147-
} $(where $($wc:tt)*)*) => {
148-
impl<$($p),*> $crate::ty::fold::ir::TypeFoldable<$tcx> for $s
149-
$(where $($wc)*)*
150-
{
151-
fn try_fold_with<V: $crate::ty::fold::ir::FallibleTypeFolder<$tcx>>(
152-
self,
153-
folder: &mut V,
154-
) -> ::std::result::Result<Self, V::Error> {
155-
EnumTypeTraversalImpl!(@FoldVariants(self, folder) input($($variants)*) output())
156-
}
157-
}
158-
};
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160-
(impl<$($p:tt),*> TypeVisitable<$tcx:tt> for $s:path {
161-
$($variants:tt)*
162-
} $(where $($wc:tt)*)*) => {
163-
impl<$($p),*> $crate::ty::visit::ir::TypeVisitable<$tcx> for $s
164-
$(where $($wc)*)*
165-
{
166-
fn visit_with<V: $crate::ty::visit::ir::TypeVisitor<$tcx>>(
167-
&self,
168-
visitor: &mut V,
169-
) -> ::std::ops::ControlFlow<V::BreakTy> {
170-
EnumTypeTraversalImpl!(@VisitVariants(self, visitor) input($($variants)*) output())
171-
}
172-
}
173-
};
174-
175-
(@FoldVariants($this:expr, $folder:expr) input() output($($output:tt)*)) => {
176-
Ok(match $this {
177-
$($output)*
178-
})
179-
};
180-
181-
(@FoldVariants($this:expr, $folder:expr)
182-
input( ($variant:path) ( $($variant_arg:ident),* ) , $($input:tt)*)
183-
output( $($output:tt)*) ) => {
184-
EnumTypeTraversalImpl!(
185-
@FoldVariants($this, $folder)
186-
input($($input)*)
187-
output(
188-
$variant ( $($variant_arg),* ) => {
189-
$variant (
190-
$($crate::ty::fold::ir::TypeFoldable::try_fold_with($variant_arg, $folder)?),*
191-
)
192-
}
193-
$($output)*
194-
)
195-
)
196-
};
197-
198-
(@FoldVariants($this:expr, $folder:expr)
199-
input( ($variant:path) { $($variant_arg:ident),* $(,)? } , $($input:tt)*)
200-
output( $($output:tt)*) ) => {
201-
EnumTypeTraversalImpl!(
202-
@FoldVariants($this, $folder)
203-
input($($input)*)
204-
output(
205-
$variant { $($variant_arg),* } => {
206-
$variant {
207-
$($variant_arg: $crate::ty::fold::ir::TypeFoldable::fold_with(
208-
$variant_arg, $folder
209-
)?),* }
210-
}
211-
$($output)*
212-
)
213-
)
214-
};
215-
216-
(@FoldVariants($this:expr, $folder:expr)
217-
input( ($variant:path), $($input:tt)*)
218-
output( $($output:tt)*) ) => {
219-
EnumTypeTraversalImpl!(
220-
@FoldVariants($this, $folder)
221-
input($($input)*)
222-
output(
223-
$variant => { $variant }
224-
$($output)*
225-
)
226-
)
227-
};
228-
229-
(@VisitVariants($this:expr, $visitor:expr) input() output($($output:tt)*)) => {
230-
match $this {
231-
$($output)*
232-
}
233-
};
234-
235-
(@VisitVariants($this:expr, $visitor:expr)
236-
input( ($variant:path) ( $($variant_arg:ident),* ) , $($input:tt)*)
237-
output( $($output:tt)*) ) => {
238-
EnumTypeTraversalImpl!(
239-
@VisitVariants($this, $visitor)
240-
input($($input)*)
241-
output(
242-
$variant ( $($variant_arg),* ) => {
243-
$($crate::ty::visit::ir::TypeVisitable::visit_with(
244-
$variant_arg, $visitor
245-
)?;)*
246-
::std::ops::ControlFlow::Continue(())
247-
}
248-
$($output)*
249-
)
250-
)
251-
};
252-
253-
(@VisitVariants($this:expr, $visitor:expr)
254-
input( ($variant:path) { $($variant_arg:ident),* $(,)? } , $($input:tt)*)
255-
output( $($output:tt)*) ) => {
256-
EnumTypeTraversalImpl!(
257-
@VisitVariants($this, $visitor)
258-
input($($input)*)
259-
output(
260-
$variant { $($variant_arg),* } => {
261-
$($crate::ty::visit::ir::TypeVisitable::visit_with(
262-
$variant_arg, $visitor
263-
)?;)*
264-
::std::ops::ControlFlow::Continue(())
265-
}
266-
$($output)*
267-
)
268-
)
269-
};
270-
271-
(@VisitVariants($this:expr, $visitor:expr)
272-
input( ($variant:path), $($input:tt)*)
273-
output( $($output:tt)*) ) => {
274-
EnumTypeTraversalImpl!(
275-
@VisitVariants($this, $visitor)
276-
input($($input)*)
277-
output(
278-
$variant => { ::std::ops::ControlFlow::Continue(()) }
279-
$($output)*
280-
)
281-
)
282-
};
283-
}

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