[][src]Struct syn::Generics

pub struct Generics {
    pub lt_token: Option<Lt>,
    pub params: Punctuated<GenericParam, Comma>,
    pub gt_token: Option<Gt>,
    pub where_clause: Option<WhereClause>,
}

Lifetimes and type parameters attached to a declaration of a function, enum, trait, etc.

This type is available if Syn is built with the "derive" or "full" feature.

Fields

Methods

impl Generics
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Returns an Iterator<Item = &TypeParam> over the type parameters in self.params.

Returns an Iterator<Item = &mut TypeParam> over the type parameters in self.params.

Returns an Iterator<Item = &LifetimeDef> over the lifetime parameters in self.params.

Returns an Iterator<Item = &mut LifetimeDef> over the lifetime parameters in self.params.

Returns an Iterator<Item = &ConstParam> over the constant parameters in self.params.

Returns an Iterator<Item = &mut ConstParam> over the constant parameters in self.params.

Initializes an empty where-clause if there is not one present already.

impl Generics
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Split a type's generics into the pieces required for impl'ing a trait for that type.

let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
quote! {
    impl #impl_generics MyTrait for #name #ty_generics #where_clause {
        // ...
    }
}

This method is available if Syn is built with the "derive" or "full" feature and the "printing" feature.

Trait Implementations

impl Parse for Generics
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impl Clone for Generics
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Performs copy-assignment from source. Read more

impl Eq for Generics
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impl Default for Generics
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impl PartialEq<Generics> for Generics
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impl Debug for Generics
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impl Hash for Generics
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Feeds a slice of this type into the given [Hasher]. Read more

impl ToTokens for Generics
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Convert self directly into a TokenStream object. Read more

Auto Trait Implementations

impl !Send for Generics

impl !Sync for Generics

Blanket Implementations

impl<T> Spanned for T where
    T: ToTokens
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impl<T> From for T
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impl<T, U> Into for T where
    U: From<T>, 
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impl<T> ToOwned for T where
    T: Clone
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impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> BorrowMut for T where
    T: ?Sized
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impl<E> SpecializationError for E
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impl<T> Erased for T
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impl<T> Send for T where
    T: ?Sized
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impl<T> Sync for T where
    T: ?Sized
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impl<T> Erased for T