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add meta designator to macro reference

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Matt Friedman 2015-08-04 20:00:59 -05:00
parent 6afb8f58d1
commit eaf27799bb
1 changed files with 3 additions and 2 deletions
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src/doc/reference.md
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@ -538,8 +538,9 @@ balanced, but they are otherwise not special.
In the matcher, `$` _name_ `:` _designator_ matches the nonterminal in the Rust
syntax named by _designator_. Valid designators are `item`, `block`, `stmt`,
`pat`, `expr`, `ty` (type), `ident`, `path`, `tt` (either side of the `=>`
in macro rules). In the transcriber, the designator is already known, and so
only the name of a matched nonterminal comes after the dollar sign.
in macro rules), and `meta` (contents of an attribute). In the transcriber, the
designator is already known, and so only the name of a matched nonterminal comes
after the dollar sign.
In both the matcher and transcriber, the Kleene star-like operator indicates
repetition. The Kleene star operator consists of `$` and parentheses, optionally