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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 // Flags: --expose-debug-as debug | |
6 // Test the mirror object for functions. | |
7 | |
8 function *generator(f) { | |
9 "use strict"; | |
10 yield; | |
11 f(); | |
12 yield; | |
13 } | |
14 | |
15 function MirrorRefCache(json_refs) { | |
16 var tmp = eval('(' + json_refs + ')'); | |
17 this.refs_ = []; | |
18 for (var i = 0; i < tmp.length; i++) { | |
19 this.refs_[tmp[i].handle] = tmp[i]; | |
20 } | |
21 } | |
22 | |
23 MirrorRefCache.prototype.lookup = function(handle) { | |
24 return this.refs_[handle]; | |
25 } | |
26 | |
27 function TestGeneratorMirror(g, status, line, column, receiver) { | |
28 // Create mirror and JSON representation. | |
29 var mirror = debug.MakeMirror(g); | |
30 var serializer = debug.MakeMirrorSerializer(); | |
31 var json = JSON.stringify(serializer.serializeValue(mirror)); | |
32 var refs = new MirrorRefCache( | |
33 JSON.stringify(serializer.serializeReferencedObjects())); | |
34 | |
35 // Check the mirror hierachy. | |
36 assertTrue(mirror instanceof debug.Mirror); | |
37 assertTrue(mirror instanceof debug.ValueMirror); | |
38 assertTrue(mirror instanceof debug.ObjectMirror); | |
39 assertTrue(mirror instanceof debug.GeneratorMirror); | |
40 | |
41 // Check the mirror properties. | |
42 assertTrue(mirror.isGenerator()); | |
43 assertEquals('generator', mirror.type()); | |
44 assertFalse(mirror.isPrimitive()); | |
45 assertEquals('Generator', mirror.className()); | |
46 | |
47 assertEquals(receiver, mirror.receiver().value()); | |
48 assertEquals(generator, mirror.func().value()); | |
49 | |
50 assertEquals(status, mirror.status()); | |
51 | |
52 // Note that line numbers are 0-based, not 1-based. | |
53 var loc = mirror.sourceLocation(); | |
54 if (status === 'suspended') { | |
55 assertTrue(!!loc); | |
56 assertEquals(line, loc.line); | |
57 assertEquals(column, loc.column); | |
58 } else { | |
59 assertEquals(undefined, loc); | |
60 } | |
61 | |
62 TestInternalProperties(mirror, status, receiver); | |
63 } | |
64 | |
65 function TestInternalProperties(mirror, status, receiver) { | |
66 var properties = mirror.internalProperties(); | |
67 assertEquals(3, properties.length); | |
68 assertEquals("[[GeneratorStatus]]", properties[0].name()); | |
69 assertEquals(status, properties[0].value().value()); | |
70 assertEquals("[[GeneratorFunction]]", properties[1].name()); | |
71 assertEquals(generator, properties[1].value().value()); | |
72 assertEquals("[[GeneratorReceiver]]", properties[2].name()); | |
73 assertEquals(receiver, properties[2].value().value()); | |
74 } | |
75 | |
76 var iter = generator(function() { | |
77 var mirror = debug.MakeMirror(iter); | |
78 assertEquals('running', mirror.status()); | |
79 assertEquals(undefined, mirror.sourceLocation()); | |
80 TestInternalProperties(mirror, 'running'); | |
81 }); | |
82 | |
83 TestGeneratorMirror(iter, 'suspended', 7, 19); | |
84 | |
85 iter.next(); | |
86 TestGeneratorMirror(iter, 'suspended', 9, 2); | |
87 | |
88 iter.next(); | |
89 TestGeneratorMirror(iter, 'suspended', 11, 2); | |
90 | |
91 iter.next(); | |
92 TestGeneratorMirror(iter, 'closed'); | |
93 | |
94 // Test generator with receiver. | |
95 var obj = {foo: 42}; | |
96 var iter2 = generator.call(obj, function() { | |
97 var mirror = debug.MakeMirror(iter2); | |
98 assertEquals('running', mirror.status()); | |
99 assertEquals(undefined, mirror.sourceLocation()); | |
100 TestInternalProperties(mirror, 'running', obj); | |
101 }); | |
102 | |
103 TestGeneratorMirror(iter2, 'suspended', 7, 19, obj); | |
104 | |
105 iter2.next(); | |
106 TestGeneratorMirror(iter2, 'suspended', 9, 2, obj); | |
107 | |
108 iter2.next(); | |
109 TestGeneratorMirror(iter2, 'suspended', 11, 2, obj); | |
110 | |
111 iter2.next(); | |
112 TestGeneratorMirror(iter2, 'closed', 0, 0, obj); | |
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