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Implement translation for deref unop.

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This commit is contained in:
Graydon Hoare 2010-12-02 19:12:09 -08:00
parent 97247bbb53
commit 1e9c8b923d
1 changed files with 10 additions and 2 deletions
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12
src/comp/middle/trans.rs
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@ -867,8 +867,16 @@ impure fn trans_unary(@block_ctxt cx, ast.unop op,
sub = copy_ty(sub.bcx, true, body, e_val, e_ty);
ret res(sub.bcx, box);
}
case (_) {
cx.fcx.ccx.sess.unimpl("expr variant in trans_unary");
case (ast.deref) {
sub.val = sub.bcx.build.GEP(sub.val,
vec(C_int(0),
C_int(abi.box_rc_field_body)));
auto e_ty = node_ann_type(sub.bcx.fcx.ccx, a);
if (typeck.type_is_scalar(e_ty) ||
typeck.type_is_nil(e_ty)) {
sub.val = sub.bcx.build.Load(sub.val);
}
ret sub;
}
}
fail;