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Rollup merge of #80551 - lcnr:const-arg-wildcard, r=varkor

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support pattern as const parents in type_of

nice to know that there's still stuff about rust i didn't know about 😆

fixes #80531

r? `@varkor`
This commit is contained in:
Dylan DPC 2020-12-31 22:21:00 +01:00 • committed by GitHub
commit 96c11f98d7
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5 changed files with 127 additions and 11 deletions
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10
compiler/rustc_hir/src/hir.rs
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@ -760,9 +760,9 @@ pub struct Pat<'hir> {
pub default_binding_modes: bool,
}
impl Pat<'_> {
impl<'hir> Pat<'hir> {
// FIXME(#19596) this is a workaround, but there should be a better way
fn walk_short_(&self, it: &mut impl FnMut(&Pat<'_>) -> bool) -> bool {
fn walk_short_(&self, it: &mut impl FnMut(&Pat<'hir>) -> bool) -> bool {
if !it(self) {
return false;
}
@ -785,12 +785,12 @@ impl Pat<'_> {
/// Note that when visiting e.g. `Tuple(ps)`,
/// if visiting `ps[0]` returns `false`,
/// then `ps[1]` will not be visited.
pub fn walk_short(&self, mut it: impl FnMut(&Pat<'_>) -> bool) -> bool {
pub fn walk_short(&self, mut it: impl FnMut(&Pat<'hir>) -> bool) -> bool {
self.walk_short_(&mut it)
}
// FIXME(#19596) this is a workaround, but there should be a better way
fn walk_(&self, it: &mut impl FnMut(&Pat<'_>) -> bool) {
fn walk_(&self, it: &mut impl FnMut(&Pat<'hir>) -> bool) {
if !it(self) {
return;
}
@ -810,7 +810,7 @@ impl Pat<'_> {
/// Walk the pattern in left-to-right order.
///
/// If `it(pat)` returns `false`, the children are not visited.
pub fn walk(&self, mut it: impl FnMut(&Pat<'_>) -> bool) {
pub fn walk(&self, mut it: impl FnMut(&Pat<'hir>) -> bool) {
self.walk_(&mut it)
}