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Edit rustc_middle::ty::cast docs #81131

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Jan 18, 2021
Merged

Edit rustc_middle::ty::cast docs #81131

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11 changes: 6 additions & 5 deletions compiler/rustc_middle/src/ty/cast.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,15 +22,16 @@ pub enum CastTy<'tcx> {
/// Various types that are represented as ints and handled mostly
/// in the same way, merged for easier matching.
Int(IntTy),
/// Floating-Point types
/// Floating-point types.
Float,
/// Function Pointers
/// Function pointers.
FnPtr,
/// Raw pointers
/// Raw pointers.
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)]
pub enum CastKind {
CoercionCast,
Expand All @@ -48,7 +49,7 @@ pub enum CastKind {

impl<'tcx> CastTy<'tcx> {
/// 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>> {
match *t.kind() {
ty::Bool => Some(CastTy::Int(IntTy::Bool)),
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