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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 foo(state) { | 5 foo(state0) { |
6 if (state == null) return 0; | 6 if (state0 == null) return 0; |
7 var sum = 0; | 7 var sum = 0; |
8 for (int i = 0; i < state.length; i++) { | 8 for (int i = 0; i < state0.length; i++) { |
9 sum += state[i]; | 9 sum += state0[i]; |
10 } | 10 } |
11 state = inscrutableId(state); | 11 state0 = inscrutableId(state0); |
12 for (int i = 0; i < state.length; i++) { | 12 for (int i = 0; i < state0.length; i++) { |
13 sum += state[i]; | 13 sum += state0[i]; |
14 } | 14 } |
15 return sum; | 15 return sum; |
16 } | 16 } |
17 | 17 |
18 int inscrutable(int x) => x == 0 ? 0 : x | inscrutable(x & (x - 1)); | 18 int inscrutable(int x) => x == 0 ? 0 : x | inscrutable(x & (x - 1)); |
19 | 19 |
20 inscrutableId(x) { | 20 inscrutableId(x) { |
21 if (x == 0) return inscrutable(x); | 21 if (x == 0) return inscrutable(x); |
22 return (3 == inscrutable(3)) ? x : false; | 22 return (3 == inscrutable(3)) ? x : false; |
23 } | 23 } |
24 | 24 |
25 class A { | 25 class A { |
26 int length = 3; | 26 int length = 3; |
27 operator [](i) => 1; | 27 operator [](i) => 1; |
28 } | 28 } |
29 | 29 |
30 main() { | 30 main() { |
31 Expect.equals(12, foo([1, 2, 3])); | 31 Expect.equals(12, foo([1, 2, 3])); |
32 if (inscrutableId(0) == 0) { | 32 if (inscrutableId(0) == 0) { |
33 Expect.equals(6, foo(new A())); | 33 Expect.equals(6, foo(new A())); |
34 } | 34 } |
35 } | 35 } |
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