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| author | Patrick Walton <pcwalton@mimiga.net> | 2014-05-02 17:21:36 -0700 |
|---|---|---|
| committer | Patrick Walton <pcwalton@mimiga.net> | 2014-05-02 18:31:16 -0700 |
| commit | 80b43de5ab1bb063a1d1eaab64dd0389c4443541 (patch) | |
| tree | bc83a52fdac57ebce5e6dce33c8bdab349d11ca6 /src/libsyntax/parse/parser.rs | |
| parent | b5d6b07370b665df6b54fa20e971e61041a233b0 (diff) | |
| download | rust-80b43de5ab1bb063a1d1eaab64dd0389c4443541.tar.gz rust-80b43de5ab1bb063a1d1eaab64dd0389c4443541.zip | |
libsyntax: Add `box PAT` to the pattern grammar. RFC #14.
Diffstat (limited to 'src/libsyntax/parse/parser.rs')
| -rw-r--r-- | src/libsyntax/parse/parser.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs index 5d8443b64d5..eefb496c943 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -2867,6 +2867,19 @@ impl<'a> Parser<'a> { // parse ref pat let mutbl = self.parse_mutability(); pat = self.parse_pat_ident(BindByRef(mutbl)); + } else if self.eat_keyword(keywords::Box) { + // `box PAT` + // + // FIXME(#13910): Rename to `PatBox` and extend to full DST + // support. + let sub = self.parse_pat(); + pat = PatUniq(sub); + hi = self.last_span.hi; + return @ast::Pat { + id: ast::DUMMY_NODE_ID, + node: pat, + span: mk_sp(lo, hi) + } } else { let can_be_enum_or_struct = self.look_ahead(1, |t| { match *t { |