bjoernager/rust
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Add type to ConstKind::Placeholder

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This commit is contained in:
varkor 2020-10-28 01:11:03 +00:00
parent 07e968b640
commit e24a4b4690
8 changed files with 41 additions and 31 deletions
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17
compiler/rustc_middle/src/ty/mod.rs
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@ -1576,11 +1576,9 @@ impl UniverseIndex {
}
}
/// The "placeholder index" fully defines a placeholder region.
/// Placeholder regions are identified by both a **universe** as well
/// as a "bound-region" within that universe. The `bound_region` is
/// basically a name -- distinct bound regions within the same
/// universe are just two regions with an unknown relationship to one
/// The "placeholder index" fully defines a placeholder region, type, or const. Placeholders are
/// identified by both a universe, as well as a name residing within that universe. Distinct bound
/// regions/types/consts within the same universe simply have an unknown relationship to one
/// another.
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, TyEncodable, TyDecodable, PartialOrd, Ord)]
pub struct Placeholder<T> {
@ -1602,7 +1600,14 @@ pub type PlaceholderRegion = Placeholder<BoundRegion>;
pub type PlaceholderType = Placeholder<BoundVar>;
pub type PlaceholderConst = Placeholder<BoundVar>;
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, HashStable)]
#[derive(TyEncodable, TyDecodable, PartialOrd, Ord)]
pub struct BoundConst<'tcx> {
pub var: BoundVar,
pub ty: Ty<'tcx>,
}
pub type PlaceholderConst<'tcx> = Placeholder<BoundConst<'tcx>>;
/// A `DefId` which is potentially bundled with its corresponding generic parameter
/// in case `did` is a const argument.