syntax: add `ast::ItemKind::MacroDef`, simplify hygiene info#40220

Merged

bors merged 3 commits intorust-lang:masterfrom

jseyfried:ast_macro_def

Mar 12, 2017

Commits on Mar 10, 2017

Refactor out `ast::ItemKind::MacroDef`.

jseyfried
authored and
alexcrichton
committed
Move `resolve_invoc` from `syntax` to `resolve`.

jseyfried
authored and
alexcrichton
committed
Avoid using `Mark` and `Invocation` for macro defs.

jseyfried
authored and
alexcrichton
committed