rust/compiler/rustc_expand
Guillaume Gomez 4d141f5e4c
Rollup merge of #87027 - petrochenkov:builderhelp, r=oli-obk
expand: Support helper attributes for built-in derive macros

This is needed for https://github.com/rust-lang/rust/pull/86735 (derive macro `Default` should have a helper attribute `default`).

With this PR we can specify helper attributes for built-in derives using syntax `#[rustc_builtin_macro(MacroName, attributes(attr1, attr2, ...))]` which mirrors equivalent syntax for proc macros `#[proc_macro_derive(MacroName, attributes(attr1, attr2, ...))]`.
Otherwise expansion infra was already ready for this.
The attribute parsing code is shared between proc macro derives and built-in macros (`fn parse_macro_name_and_helper_attrs`).
2021-07-14 19:53:35 +02:00
..
src Rollup merge of #87027 - petrochenkov:builderhelp, r=oli-obk 2021-07-14 19:53:35 +02:00
Cargo.toml bumped smallvec deps 2021-02-14 18:03:11 +03:00