Function impl_tools_lib::generics::impl_generics

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

Generate impl_generics tokens

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

Note: the ty_generics generated by syn::Generics::split_for_impl may be used directly.