用于加强代码流程可读性的工具类
Java Language:

1. public?class?LayerResult?{??
2. ????private?List<Boolean>?results?=?new?ArrayList<Boolean>();??
3. ????private?int?layer?=?-1;??
4. ??????
5. ????public?boolean?get(){??
6. ????????return?results.get(layer);??
7. ????}??
8. ??????
9. ????public?boolean?set(boolean?result){??
10. ????????results.set(layer,?result);??
11. ????????return?result;??
12. ????}??
13. ??????
14. ????public?boolean?and(boolean?value){??
15. ????????return?set(get()?&&?value);??
16. ????}??
17. ??????
18. ????public?boolean?or(boolean?value){??
19. ????????return?set(get()?||?value);??
20. ????}??
21. ??????
22. ????public?void?in(boolean?defaultValue){??
23. ????????results.add(defaultValue);??
24. ????????layer?++;??
25. ????}??
26. ??????
27. ????public?boolean?out(){??
28. ????????layer?--;??
29. ????????return?results.remove(layer?+?1);??
30. ????}??
31. }

1. var?LayerResult?=?function(){??
2. };??
3. LayerResult.prototype?=?{??
4. ????results?:?[],??
5. ????layer?:?-1,??
6. ????get?:?function(){??
7. ????????return?results[layer]??
8. ????},??
9. ????set?:?function(value){??
10. ????????results[layer]?=?value;??
11. ????????return?value;??
12. ????},??
13. ????and?:?function(value){??
14. ????????return?this.set(this.get()?&&?value);??
15. ????},??
16. ????or?:?function(value){??
17. ????????return?this.set(this.get()?||?value);??
18. ????},??
19. ????in?:?function(defaultValue){??
20. ????????results.push(defaultValue);??
21. ????},??
22. ????out?:?function(){??
23. ????????return?results.pop();??
24. ????}??
25. }; ?