bjoernager/rust
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Implement &-patterns

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Closes #2855
This commit is contained in:
Tim Chevalier 2012-09-07 17:07:32 -07:00
parent e9f5a099df
commit 53ce42dc4f
13 changed files with 88 additions and 18 deletions
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23
src/libsyntax/parse/parser.rs
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@ -42,8 +42,8 @@ use ast::{_mod, add, alt_check, alt_exhaustive, arg, arm, attribute,
mac_invoc_tt, mac_var, matcher, match_nonterminal, match_seq,
match_tok, method, mode, module_ns, mt, mul, mutability,
named_field, neg, noreturn, not, pat, pat_box, pat_enum,
pat_ident, pat_lit, pat_range, pat_rec, pat_struct, pat_tup,
pat_uniq, pat_wild, path, private, proto, proto_bare,
pat_ident, pat_lit, pat_range, pat_rec, pat_region, pat_struct,
pat_tup, pat_uniq, pat_wild, path, private, proto, proto_bare,
proto_block, proto_box, proto_uniq, provided, public, pure_fn,
purity, re_anon, re_named, region, rem, required, ret_style,
return_val, self_ty, shl, shr, stmt, stmt_decl, stmt_expr,
@ -1844,6 +1844,25 @@ struct parser {
};
}
token::BINOP(token::AND) => {
let lo = self.span.lo;
self.bump();
let sub = self.parse_pat(refutable);
hi = sub.span.hi;
// HACK: parse &"..." as a literal of a borrowed str
pat = match 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_slice(self.region_from_name(None))),
span: mk_sp(lo, hi)};
pat_lit(vst)
}
_ => pat_region(sub)
};
}
token::LBRACE => {
self.bump();
let (fields, etc) = self.parse_pat_fields(refutable);