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
8function *generator(f) {
9  "use strict";
10  yield;
11  f();
12  yield;
13}
14
15function 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
23MirrorRefCache.prototype.lookup = function(handle) {
24  return this.refs_[handle];
25}
26
27function 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
65function 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
76var 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
83TestGeneratorMirror(iter, 'suspended', 7, 19);
84
85iter.next();
86TestGeneratorMirror(iter, 'suspended', 9, 2);
87
88iter.next();
89TestGeneratorMirror(iter, 'suspended', 11, 2);
90
91iter.next();
92TestGeneratorMirror(iter, 'closed');
93
94// Test generator with receiver.
95var obj = {foo: 42};
96var 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
103TestGeneratorMirror(iter2, 'suspended', 7, 19, obj);
104
105iter2.next();
106TestGeneratorMirror(iter2, 'suspended', 9, 2, obj);
107
108iter2.next();
109TestGeneratorMirror(iter2, 'suspended', 11, 2, obj);
110
111iter2.next();
112TestGeneratorMirror(iter2, 'closed', 0, 0, obj);
113