| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| library type_mask_test_helper; |
| |
| import '../../../sdk/lib/_internal/compiler/implementation/types/types.dart'; |
| import '../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart' |
| show Compiler; |
| |
| TypeMask simplify(TypeMask mask, Compiler compiler) { |
| if (mask is ForwardingTypeMask) { |
| return simplify(mask.forwardTo, compiler); |
| } else if (mask is UnionTypeMask) { |
| return UnionTypeMask.flatten(mask.disjointMasks, compiler); |
| } else { |
| return mask; |
| } |
| } |