Macros
Structs
A newtype around an AstLike node that implements AstLike itself.
Traits
An AstLike represents an AST node (or some wrapper around
and AST node) which stores some combination of attributes
and tokens.
Helper trait for the macros below. Abstracts over
the two types of attribute fields that AST nodes
may have (Vec<Attribute> or AttrVec)