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Intermediate formatting and such

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This commit is contained in:
Jack Huey
2020-12-23 13:16:25 -05:00
parent 8278314a8b
commit 4cb3d6f983
7 changed files with 63 additions and 74 deletions
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20
compiler/rustc_middle/src/ty/mod.rs
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@@ -1072,9 +1072,8 @@ impl<'tcx> Predicate<'tcx> {
///
/// Note that this method panics in case this predicate has unbound variables.
pub fn skip_binders(self) -> PredicateAtom<'tcx> {
match self.kind() {
&PredicateKind::ForAll(binder) => binder.skip_binder(),
}
let &PredicateKind::ForAll(binder) = self.kind();
binder.skip_binder()
}
/// Returns the inner `PredicateAtom`.
@@ -1084,25 +1083,22 @@ impl<'tcx> Predicate<'tcx> {
/// Rebinding the returned atom can causes the previously bound variables
/// to end up at the wrong binding level.
pub fn skip_binders_unchecked(self) -> PredicateAtom<'tcx> {
match self.kind() {
&PredicateKind::ForAll(binder) => binder.skip_binder(),
}
let &PredicateKind::ForAll(binder) = self.kind();
binder.skip_binder()
}
/// Converts this to a `Binder<PredicateAtom<'tcx>>`. If the value was an
/// `Atom`, then it is not allowed to contain escaping bound vars.
pub fn bound_atom(self) -> Binder<PredicateAtom<'tcx>> {
match self.kind() {
&PredicateKind::ForAll(binder) => binder,
}
let &PredicateKind::ForAll(binder) = self.kind();
binder
}
/// Allows using a `Binder<PredicateAtom<'tcx>>` even if the given predicate previously
/// contained unbound variables by shifting these variables outwards.
pub fn bound_atom_with_opt_escaping(self, _tcx: TyCtxt<'tcx>) -> Binder<PredicateAtom<'tcx>> {
match self.kind() {
&PredicateKind::ForAll(binder) => binder,
}
let &PredicateKind::ForAll(binder) = self.kind();
binder
}
}