Type Definition rustc_builtin_macros::deriving::generic::EnumNonMatchCollapsedFunc

pub type EnumNonMatchCollapsedFunc<'a> = Box<dyn FnMut(&mut ExtCtxt<'_>, Span, (&[Ident], &[Ident]), &[P<Expr>]) -> P<Expr> + 'a>;

Deal with non-matching enum variants. The tuple is a list of identifiers (one for each Self argument, which could be any of the variants since they have been collapsed together) and the identifiers holding the variant index value for each of the Self arguments. The last argument is all the non-Self args of the method being derived.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes