Struct syn::Generics [−][src]
pub struct Generics { pub lt_token: Option<Lt>, pub params: Punctuated<GenericParam, Comma>, pub gt_token: Option<Gt>, pub where_clause: Option<WhereClause>, }
full
or derive
only.Expand description
Lifetimes and type parameters attached to a declaration of a function, enum, trait, etc.
This type is available only 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
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.
This is supported on crate feature printing
only.
printing
only.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 only if Syn is built with the "derive"
or
"full"
feature and the "printing"
feature.
Trait Implementations
clone-impls
only.extra-traits
only.extra-traits
only.parsing
only.extra-traits
only.printing
only.extra-traits
only.Auto Trait Implementations
impl RefUnwindSafe for Generics
impl UnwindSafe for Generics
Blanket Implementations
Mutably borrows from an owned value. Read more