Struct 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 an item

This is a custom variant of syn::Generics which supports trait as a parameter bound.

Fields

lt_token: Option<Lt>

<

params: Punctuated<GenericParam, Comma>

Parameters

gt_token: Option<Gt>

>

where_clause: Option<WhereClause>

where bounds

Implementations

impl Generics

pub fn impl_generics( self, item_generics: &Generics, subst: &TokenStream, ) -> (TokenStream, TokenStream)

Generate (impl_generics, where_clause) tokens

Combines generics from self and item_generics.

This is the equivalent of the first and third items output by syn::Generics::split_for_impl. Any instance of trait as a parameter bound is replaced by subst.

Note: use ty_generics from syn::Generics::split_for_impl or Self::ty_generics as appropriate.

pub fn ty_generics(&self, item_generics: &Generics) -> TokenStream

Generate ty_generics tokens

Combines generics from self and item_generics.

This is the equivalent to the second item output by syn::Generics::split_for_impl.

Trait Implementations

impl Debug for Generics

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Generics

fn default() -> Self

Returns the “default value” for a type.

impl Parse for Generics

fn parse(input: ParseStream<'_>) -> Result<Self>

impl ToTokensSubst for Generics

fn to_tokens_subst(&self, tokens: &mut TokenStream, subst: &TokenStream)

Write self to the given TokenStream