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Built-in implementation of Tuple trait

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This commit is contained in:
Michael Goulet
2022-07-30 01:33:51 +00:00
parent 6b2eab2310
commit d0e4c679ff
8 changed files with 72 additions and 8 deletions
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11
compiler/rustc_middle/src/traits/mod.rs
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@@ -634,6 +634,10 @@ pub enum ImplSource<'tcx, N> {
/// ImplSource for a `const Drop` implementation.
ConstDestruct(ImplSourceConstDestructData<N>),
/// ImplSource for a `std::marker::Tuple` implementation.
/// This has no nested predicates ever, so no data.
Tuple,
}
impl<'tcx, N> ImplSource<'tcx, N> {
@@ -648,7 +652,8 @@ impl<'tcx, N> ImplSource<'tcx, N> {
ImplSource::Object(d) => d.nested,
ImplSource::FnPointer(d) => d.nested,
ImplSource::DiscriminantKind(ImplSourceDiscriminantKindData)
| ImplSource::Pointee(ImplSourcePointeeData) => Vec::new(),
| ImplSource::Pointee(ImplSourcePointeeData)
| ImplSource::Tuple => Vec::new(),
ImplSource::TraitAlias(d) => d.nested,
ImplSource::TraitUpcasting(d) => d.nested,
ImplSource::ConstDestruct(i) => i.nested,
@@ -666,7 +671,8 @@ impl<'tcx, N> ImplSource<'tcx, N> {
ImplSource::Object(d) => &d.nested,
ImplSource::FnPointer(d) => &d.nested,
ImplSource::DiscriminantKind(ImplSourceDiscriminantKindData)
| ImplSource::Pointee(ImplSourcePointeeData) => &[],
| ImplSource::Pointee(ImplSourcePointeeData)
| ImplSource::Tuple => &[],
ImplSource::TraitAlias(d) => &d.nested,
ImplSource::TraitUpcasting(d) => &d.nested,
ImplSource::ConstDestruct(i) => &i.nested,
@@ -733,6 +739,7 @@ impl<'tcx, N> ImplSource<'tcx, N> {
nested: i.nested.into_iter().map(f).collect(),
})
}
ImplSource::Tuple => ImplSource::Tuple,
}
}
}