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rollup merge of #19430: pczarn/interp_tt-cleanup

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Conflicts:
	src/libsyntax/parse/parser.rs
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Alex Crichton 2015-01-06 15:38:10 -08:00
commit 0631b466c2
12 changed files with 170 additions and 103 deletions
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7
src/doc/reference.md
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@ -690,10 +690,9 @@ balanced, but they are otherwise not special.
In the matcher, `$` _name_ `:` _designator_ matches the nonterminal in the Rust
syntax named by _designator_. Valid designators are `item`, `block`, `stmt`,
`pat`, `expr`, `ty` (type), `ident`, `path`, `matchers` (lhs of the `=>` in
macro rules), `tt` (rhs of the `=>` in macro rules). In the transcriber, the
designator is already known, and so only the name of a matched nonterminal
comes after the dollar sign.
`pat`, `expr`, `ty` (type), `ident`, `path`, `tt` (either side of the `=>`
in macro rules). In the transcriber, the designator is already known, and so
only the name of a matched nonterminal comes after the dollar sign.
In both the matcher and transcriber, the Kleene star-like operator indicates
repetition. The Kleene star operator consists of `$` and parens, optionally