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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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