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>,
}

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.

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

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

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

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

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

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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 Synom for Generics
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A short name of the type being parsed. Read more

impl ToTokens for Generics
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Write self to the given TokenStream. Read more

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Convert self directly into a TokenStream object. Read more

impl Default for Generics
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Returns the "default value" for a type. Read more

impl Debug for Generics
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Formats the value using the given formatter. Read more

impl Eq for Generics
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impl PartialEq for Generics
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This method tests for self and other values to be equal, and is used by ==. Read more

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This method tests for !=.

impl Hash for Generics
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Feeds this value into the given [Hasher]. Read more

1.3.0
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Feeds a slice of this type into the given [Hasher]. Read more

impl Clone for Generics
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Returns a copy of the value. Read more

1.0.0
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Performs copy-assignment from source. Read more