pub enum GenericParamDefKind {
    Lifetime {
        outlives: Vec<String>,
    },
    Type {
        bounds: Vec<GenericBound>,
        default: Option<Type>,
        synthetic: bool,
    },
    Const {
        type_: Type,
        default: Option<String>,
    },
}

Variants§

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Lifetime

Fields

§outlives: Vec<String>
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Type

Fields

§default: Option<Type>
§synthetic: bool

This is normally false, which means that this generic parameter is declared in the Rust source text.

If it is true, this generic parameter has been introduced by the compiler behind the scenes.

Example

Consider

pub fn f(_: impl Trait) {}

The compiler will transform this behind the scenes to

pub fn f<impl Trait: Trait>(_: impl Trait) {}

In this example, the generic parameter named impl Trait (and which is bound by Trait) is synthetic, because it was not originally in the Rust source text.

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Const

Fields

§type_: Type
§default: Option<String>

Trait Implementations§

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impl Clone for GenericParamDefKind

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fn clone(&self) -> GenericParamDefKind

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for GenericParamDefKind

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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<'de> Deserialize<'de> for GenericParamDefKind

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Hash for GenericParamDefKind

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq<GenericParamDefKind> for GenericParamDefKind

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fn eq(&self, other: &GenericParamDefKind) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for GenericParamDefKind

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Eq for GenericParamDefKind

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impl StructuralEq for GenericParamDefKind

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impl StructuralPartialEq for GenericParamDefKind

Auto Trait Implementations§

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,

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fn borrow(&self) -> &T

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

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.
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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.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for Twhere T: for<'de> Deserialize<'de>,

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: 136 bytes

Size for each variant:

  • Lifetime: 31 bytes
  • Type: 135 bytes
  • Const: 135 bytes