Enum rustc_hir::hir::GenericParamKind

pub enum GenericParamKind<'hir> {
    Lifetime {
        kind: LifetimeParamKind,
    },
    Type {
        default: Option<&'hir Ty<'hir>>,
        synthetic: Option<SyntheticTyParamKind>,
    },
    Const {
        ty: &'hir Ty<'hir>,
        default: Option<AnonConst>,
    },
}

Variants

Lifetime

A lifetime definition (e.g., 'a: 'b + 'c + 'd).

Fields of Lifetime

kind: LifetimeParamKind

Type

Fields of Type

default: Option<&'hir Ty<'hir>>synthetic: Option<SyntheticTyParamKind>

Const

Fields of Const

ty: &'hir Ty<'hir>default: Option<AnonConst>

Optional default value for the const generic param

Trait Implementations

impl<'hir> Debug for GenericParamKind<'hir>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'hir, __CTX> HashStable<__CTX> for GenericParamKind<'hir> where
    __CTX: HashStableContext, 

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

• Lifetime: 1 byte
• Type: 15 bytes
• Const: 31 bytes