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1 // Copyright 2014 the V8 project authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 | |
6 var Debug = debug.Debug; | |
7 | |
8 function assertIteratorResult(value, done, result) { | |
9 assertEquals({value: value, done: done}, result); | |
10 } | |
11 | |
12 function RunTest(formals_and_body, args, value1, value2) { | |
13 // A null listener. It isn't important what the listener does. | |
14 function listener(event, exec_state, event_data, data) { | |
15 } | |
16 | |
17 // Create the generator function outside a debugging context. It will probably | |
18 // be lazily compiled. | |
19 var gen = (function*(){}).constructor.apply(null, formals_and_body); | |
20 | |
21 // Instantiate the generator object. | |
22 var obj = gen.apply(null, args); | |
23 | |
24 // Advance to the first yield. | |
25 assertIteratorResult(value1, false, obj.next()); | |
26 | |
27 // Enable the debugger, which should force recompilation of the generator | |
28 // function and relocation of the suspended generator activation. | |
29 Debug.setListener(listener); | |
30 | |
31 // Add a breakpoint on line 3 (the second yield). | |
32 var bp = Debug.setBreakPoint(gen, 3); | |
33 | |
34 // Check that the generator resumes and suspends properly. | |
35 assertIteratorResult(value2, false, obj.next()); | |
36 | |
37 // Disable debugger -- should not force recompilation. | |
38 Debug.clearBreakPoint(bp); | |
39 Debug.setListener(null); | |
40 | |
41 // Run to completion. | |
42 assertIteratorResult(undefined, true, obj.next()); | |
43 } | |
44 | |
45 function prog(a, b, c) { | |
46 return a + ';\n' + 'yield ' + b + ';\n' + 'yield ' + c; | |
47 } | |
48 | |
49 // Simple empty local scope. | |
50 RunTest([prog('', '1', '2')], [], 1, 2); | |
51 | |
52 RunTest([prog('for (;;) break', '1', '2')], [], 1, 2); | |
53 | |
54 RunTest([prog('while (0) foo()', '1', '2')], [], 1, 2); | |
55 | |
56 RunTest(['a', prog('var x = 3', 'a', 'x')], [1], 1, 3); | |
57 | |
58 RunTest(['a', prog('', '1', '2')], [42], 1, 2); | |
59 | |
60 RunTest(['a', prog('for (;;) break', '1', '2')], [42], 1, 2); | |
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