bjoernager/rust
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Represent TraitBoundModifiers as distinct parts in HIR

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This commit is contained in:
Michael Goulet 2024-10-20 20:35:18 +00:00
parent 86d69c705a
commit febb3f7c88
18 changed files with 116 additions and 117 deletions
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29
compiler/rustc_hir/src/hir.rs
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@ -6,8 +6,8 @@ use rustc_ast::{
LitKind, TraitObjectSyntax, UintTy,
};
pub use rustc_ast::{
BinOp, BinOpKind, BindingMode, BorrowKind, ByRef, CaptureBy, ImplPolarity, IsAuto, Movability,
Mutability, UnOp,
BinOp, BinOpKind, BindingMode, BorrowKind, BoundConstness, BoundPolarity, ByRef, CaptureBy,
ImplPolarity, IsAuto, Movability, Mutability, UnOp,
};
use rustc_data_structures::fingerprint::Fingerprint;
use rustc_data_structures::sorted_map::SortedMap;
@ -502,19 +502,16 @@ pub enum GenericArgsParentheses {
ParenSugar,
}
/// A modifier on a trait bound.
/// The modifiers on a trait bound.
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, HashStable_Generic)]
pub enum TraitBoundModifier {
/// `Type: Trait`
None,
/// `Type: !Trait`
Negative,
/// `Type: ?Trait`
Maybe,
/// `Type: const Trait`
Const,
/// `Type: ~const Trait`
MaybeConst,
pub struct TraitBoundModifiers {
pub constness: BoundConstness,
pub polarity: BoundPolarity,
}
impl TraitBoundModifiers {
pub const NONE: Self =
TraitBoundModifiers { constness: BoundConstness::Never, polarity: BoundPolarity::Positive };
}
#[derive(Clone, Copy, Debug, HashStable_Generic)]
@ -3180,7 +3177,7 @@ pub struct PolyTraitRef<'hir> {
/// The constness and polarity of the trait ref.
///
/// The `async` modifier is lowered directly into a different trait for now.
pub modifiers: TraitBoundModifier,
pub modifiers: TraitBoundModifiers,
/// The `Foo<&'a T>` in `for<'a> Foo<&'a T>`.
pub trait_ref: TraitRef<'hir>,
@ -4085,7 +4082,7 @@ mod size_asserts {
static_assert_size!(ForeignItem<'_>, 88);
static_assert_size!(ForeignItemKind<'_>, 56);
static_assert_size!(GenericArg<'_>, 16);
static_assert_size!(GenericBound<'_>, 48);
static_assert_size!(GenericBound<'_>, 64);
static_assert_size!(Generics<'_>, 56);
static_assert_size!(Impl<'_>, 80);
static_assert_size!(ImplItem<'_>, 88);