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Rollup merge of #81131 - pierwill:edit-rustc_middle-cast, r=varkor

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Edit rustc_middle::ty::cast docs

Link to RFC 401 and add missing punctuation.
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Ashley Mannix 2021-01-18 21:53:40 +10:00 committed by GitHub
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1 changed files with 6 additions and 5 deletions
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11
compiler/rustc_middle/src/ty/cast.rs
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@ -22,15 +22,16 @@ pub enum CastTy<'tcx> {
/// Various types that are represented as ints and handled mostly /// Various types that are represented as ints and handled mostly
/// in the same way, merged for easier matching. /// in the same way, merged for easier matching.
Int(IntTy), Int(IntTy),
/// Floating-Point types /// Floating-point types.
Float, Float,
/// Function Pointers /// Function pointers.
FnPtr, FnPtr,
/// Raw pointers /// Raw pointers.
Ptr(ty::TypeAndMut<'tcx>), Ptr(ty::TypeAndMut<'tcx>),
} }
/// Cast Kind. See RFC 401 (or librustc_typeck/check/cast.rs) /// Cast Kind. See [RFC 401](https://rust-lang.github.io/rfcs/0401-coercions.html)
/// (or librustc_typeck/check/cast.rs).
#[derive(Copy, Clone, Debug, TyEncodable, TyDecodable, HashStable)] #[derive(Copy, Clone, Debug, TyEncodable, TyDecodable, HashStable)]
pub enum CastKind { pub enum CastKind {
CoercionCast, CoercionCast,
@ -48,7 +49,7 @@ pub enum CastKind {
impl<'tcx> CastTy<'tcx> { impl<'tcx> CastTy<'tcx> {
/// Returns `Some` for integral/pointer casts. /// Returns `Some` for integral/pointer casts.
/// casts like unsizing casts will return `None` /// Casts like unsizing casts will return `None`.
pub fn from_ty(t: Ty<'tcx>) -> Option<CastTy<'tcx>> { pub fn from_ty(t: Ty<'tcx>) -> Option<CastTy<'tcx>> {
match *t.kind() { match *t.kind() {
ty::Bool => Some(CastTy::Int(IntTy::Bool)), ty::Bool => Some(CastTy::Int(IntTy::Bool)),