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

Variants§

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Lifetime

Fields

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

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Type

Fields

§default: Option<&'hir Ty<'hir>>
§synthetic: bool
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Const

Fields

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

Optional default value for the const generic param

Trait Implementations§

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

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

Formats the value using the given formatter. Read more
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impl<'hir, __CTX> HashStable<__CTX> for GenericParamKind<'hir>where
    __CTX: HashStableContext,

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

Auto Trait Implementations§

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impl<'hir> RefUnwindSafe for GenericParamKind<'hir>

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impl<'hir> !Send for GenericParamKind<'hir>

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impl<'hir> !Sync for GenericParamKind<'hir>

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impl<'hir> Unpin for GenericParamKind<'hir>

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impl<'hir> UnwindSafe for GenericParamKind<'hir>

Blanket Implementations§

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impl<T> Any for Twhere
    T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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