//
lc = left as EnumConstant;
rc = right as EnumConstant;
- if (lc != null || rc != null){
+ if (lc != null || rc != null) {
+ TypeSpec res_type;
if (lc == null) {
- lc = rc;
- lt = lc.Type;
- right = left;
- }
+ res_type = right.Type;
- // U has to be implicitly convetible to E.base
- right = right.ConvertImplicitly (lc.Child.Type);
- if (right == null)
- return null;
+ // Y has to be implicitly convertible to E.base
+ left = left.ConvertImplicitly (rc.Child.Type);
+ if (left == null)
+ return null;
- result = BinaryFold (ec, oper, lc.Child, right, loc);
+ right = rc.Child;
+ } else {
+ res_type = left.Type;
+
+ // U has to be implicitly convertible to E.base
+ right = right.ConvertImplicitly (lc.Child.Type);
+ if (right == null)
+ return null;
+
+ left = lc.Child;
+ }
+
+ result = BinaryFold (ec, oper, left, right, loc);
if (result == null)
return null;
- result = result.Reduce (ec, lt);
+ result = result.Reduce (ec, res_type);
if (result == null)
return null;
- return new EnumConstant (result, lt);
+ return new EnumConstant (result, res_type);
}
if (left is NullLiteral && right is NullLiteral) {