OLD | NEW |
| (Empty) |
1 // Copyright 2013 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 // Flags: --harmony-generators --harmony-scoping --allow-natives-syntax | |
29 | |
30 // Test instantations of generators. | |
31 | |
32 // Generators shouldn't allocate stack slots. This test will abort in debug | |
33 // mode if generators have stack slots. | |
34 function TestContextAllocation() { | |
35 function* g1(a, b, c) { yield 1; return [a, b, c]; } | |
36 function* g2() { yield 1; return arguments; } | |
37 function* g3() { yield 1; return this; } | |
38 function* g4() { var x = 10; yield 1; return x; } | |
39 // Temporary variable context allocation | |
40 function* g5(l) { "use strict"; yield 1; for (let x in l) { yield x; } } | |
41 | |
42 g1(); | |
43 g2(); | |
44 g3(); | |
45 g4(); | |
46 g5(["foo"]); | |
47 } | |
48 TestContextAllocation(); | |
49 | |
50 | |
51 // Test the properties and prototype of a generator object. | |
52 function TestGeneratorObject() { | |
53 function* g() { yield 1; } | |
54 | |
55 var iter = g(); | |
56 assertSame(g.prototype, Object.getPrototypeOf(iter)); | |
57 assertTrue(iter instanceof g); | |
58 assertEquals("Generator", %_ClassOf(iter)); | |
59 assertEquals("[object Generator]", String(iter)); | |
60 assertEquals([], Object.getOwnPropertyNames(iter)); | |
61 assertTrue(iter !== g()); | |
62 | |
63 // g() is the same as new g(). | |
64 iter = new g(); | |
65 assertSame(g.prototype, Object.getPrototypeOf(iter)); | |
66 assertTrue(iter instanceof g); | |
67 assertEquals("Generator", %_ClassOf(iter)); | |
68 assertEquals("[object Generator]", String(iter)); | |
69 assertEquals([], Object.getOwnPropertyNames(iter)); | |
70 assertTrue(iter !== new g()); | |
71 } | |
72 TestGeneratorObject(); | |
73 | |
74 | |
75 // Test the methods of generator objects. | |
76 function TestGeneratorObjectMethods() { | |
77 function* g() { yield 1; } | |
78 var iter = g(); | |
79 | |
80 function TestNonGenerator(non_generator) { | |
81 assertThrows(function() { iter.next.call(non_generator); }, TypeError); | |
82 assertThrows(function() { iter.next.call(non_generator, 1); }, TypeError); | |
83 assertThrows(function() { iter.throw.call(non_generator, 1); }, TypeError); | |
84 assertThrows(function() { iter.close.call(non_generator); }, TypeError); | |
85 } | |
86 | |
87 TestNonGenerator(1); | |
88 TestNonGenerator({}); | |
89 TestNonGenerator(function(){}); | |
90 TestNonGenerator(g); | |
91 TestNonGenerator(g.prototype); | |
92 } | |
93 TestGeneratorObjectMethods(); | |
OLD | NEW |