[−][src]Struct syn::Generics
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
lt_token: Option<Lt>
params: Punctuated<GenericParam, Comma>
gt_token: Option<Gt>
where_clause: Option<WhereClause>
Implementations
impl Generics
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pub fn type_params(&self) -> TypeParams
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Returns an
Iterator<Item = &
TypeParam
>
over the type parameters in self.params
.
pub fn type_params_mut(&mut self) -> TypeParamsMut
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Returns an
Iterator<Item = &mut
TypeParam
>
over the type parameters in self.params
.
pub fn lifetimes(&self) -> Lifetimes
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Returns an
Iterator<Item = &
LifetimeDef
>
over the lifetime parameters in self.params
.
pub fn lifetimes_mut(&mut self) -> LifetimesMut
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Returns an
Iterator<Item = &mut
LifetimeDef
>
over the lifetime parameters in self.params
.
pub fn const_params(&self) -> ConstParams
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Returns an
Iterator<Item = &
ConstParam
>
over the constant parameters in self.params
.
pub fn const_params_mut(&mut self) -> ConstParamsMut
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Returns an
Iterator<Item = &mut
ConstParam
>
over the constant parameters in self.params
.
pub fn make_where_clause(&mut self) -> &mut WhereClause
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Initializes an empty where
-clause if there is not one present already.
impl Generics
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pub fn split_for_impl(
&self
) -> (ImplGenerics, TypeGenerics, Option<&WhereClause>)
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&self
) -> (ImplGenerics, TypeGenerics, Option<&WhereClause>)
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 Clone for Generics
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impl Debug for Generics
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impl Default for Generics
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impl Eq for Generics
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impl Hash for Generics
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fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
impl Parse for Generics
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fn parse(input: ParseStream) -> Result<Self>
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impl PartialEq<Generics> for Generics
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impl StructuralEq for Generics
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impl StructuralPartialEq for Generics
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impl ToTokens for Generics
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fn to_tokens(&self, tokens: &mut TokenStream)
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fn to_token_stream(&self) -> TokenStream
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fn into_token_stream(self) -> TokenStream
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Auto Trait Implementations
impl !RefUnwindSafe for Generics
impl !Send for Generics
impl !Sync for Generics
impl Unpin for Generics
impl UnwindSafe for Generics
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Spanned for T where
T: Spanned + ?Sized,
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T: Spanned + ?Sized,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,