Josh Triplett 354fcf2b52 mbe: Handle applying macro_rules derives ...

Add infrastructure to apply a derive macro to arguments, consuming and
returning a `TokenTree` only.

Handle `SyntaxExtensionKind::MacroRules` when expanding a derive, if the
macro's kinds support derive.

Add tests covering various cases of `macro_rules` derives.

Note that due to a pre-existing FIXME in `expand.rs`, derives are
re-queued and some errors get emitted twice. Duplicate diagnostic
suppression makes them not visible, but the FIXME should still get
fixed.

2025-08-14 14:23:05 -07:00

..

src

mbe: Handle applying macro_rules derives

2025-08-14 14:23:05 -07:00

Cargo.toml

remove rustc_attr_data_structures

2025-07-31 14:19:27 +02:00

messages.ftl

mbe: Parse macro derive rules

2025-08-14 13:53:57 -07:00