Struct rustc_builtin_macros::deriving::BuiltinDerive

pub(crate) struct BuiltinDerive(pub(crate) fn(_: &mut ExtCtxt<'_>, _: Span, _: &MetaItem, _: &Annotatable, _: &mut dyn FnMut(Annotatable), _: bool));

Tuple Fields

0: fn(_: &mut ExtCtxt<'_>, _: Span, _: &MetaItem, _: &Annotatable, _: &mut dyn FnMut(Annotatable), _: bool)

Trait Implementations

impl MultiItemModifier for BuiltinDerive

fn expand(
    &self,
    ecx: &mut ExtCtxt<'_>,
    span: Span,
    meta_item: &MetaItem,
    item: Annotatable,
    is_derive_const: bool
) -> ExpandResult<Vec<Annotatable>, Annotatable>

meta_item is the attribute, and item is the item being modified.

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: 8 bytes