bjoernager/rust
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Handle prefix notations for strings in patterns. This is kind of gross.

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This commit is contained in:
Michael Sullivan 2012-07-13 19:08:18 -07:00
parent eaf8b7675e
commit 6247a529e3
1 changed files with 21 additions and 2 deletions
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23
src/libsyntax/parse/parser.rs
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@ -1696,14 +1696,33 @@ class parser {
token::AT {
self.bump();
let sub = self.parse_pat();
pat = pat_box(sub);
hi = sub.span.hi;
// HACK: parse @"..." as a literal of a vstore @str
pat = alt sub.node {
pat_lit(e@@{node: expr_lit(@{node: lit_str(_), span: _}), _}) {
let vst = @{id: self.get_id(), callee_id: self.get_id(),
node: expr_vstore(e, vstore_box),
span: mk_sp(lo, hi)};
pat_lit(vst)
}
_ { pat_box(sub) }
};
}
token::TILDE {
self.bump();
let sub = self.parse_pat();
pat = pat_uniq(sub);
hi = sub.span.hi;
// HACK: parse ~"..." as a literal of a vstore ~str
pat = alt sub.node {
pat_lit(e@@{node: expr_lit(@{node: lit_str(_), span: _}), _}) {
let vst = @{id: self.get_id(), callee_id: self.get_id(),
node: expr_vstore(e, vstore_uniq),
span: mk_sp(lo, hi)};
pat_lit(vst)
}
_ { pat_uniq(sub) }
};
}
token::LBRACE {
self.bump();