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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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27 | 27 |
28 "use strict"; | 28 "use strict"; |
29 | 29 |
30 // This file relies on the fact that the following declarations have been made | 30 // This file relies on the fact that the following declarations have been made |
31 // in runtime.js: | 31 // in runtime.js: |
32 // var $Function = global.Function; | 32 // var $Function = global.Function; |
33 | 33 |
34 // ---------------------------------------------------------------------------- | 34 // ---------------------------------------------------------------------------- |
35 | 35 |
36 | 36 |
37 // TODO(wingo): Give link to specification. For now, the following diagram is | 37 // Generator functions and objects are specified by ES6, sections 15.19.3 and |
38 // the spec: | 38 // 15.19.4. |
39 // http://wiki.ecmascript.org/lib/exe/fetch.php?cache=cache&media=harmony:es6_ge
nerator_object_model_3-29-13.png | |
40 | 39 |
41 function GeneratorObjectNext() { | 40 function GeneratorObjectNext(value) { |
42 if (!IS_GENERATOR(this)) { | 41 if (!IS_GENERATOR(this)) { |
43 throw MakeTypeError('incompatible_method_receiver', | 42 throw MakeTypeError('incompatible_method_receiver', |
44 ['[Generator].prototype.next', this]); | 43 ['[Generator].prototype.next', this]); |
45 } | 44 } |
46 | 45 |
47 return %_GeneratorSend(this, void 0); | 46 return %_GeneratorNext(this, value); |
48 } | |
49 | |
50 function GeneratorObjectSend(value) { | |
51 if (!IS_GENERATOR(this)) { | |
52 throw MakeTypeError('incompatible_method_receiver', | |
53 ['[Generator].prototype.send', this]); | |
54 } | |
55 | |
56 return %_GeneratorSend(this, value); | |
57 } | 47 } |
58 | 48 |
59 function GeneratorObjectThrow(exn) { | 49 function GeneratorObjectThrow(exn) { |
60 if (!IS_GENERATOR(this)) { | 50 if (!IS_GENERATOR(this)) { |
61 throw MakeTypeError('incompatible_method_receiver', | 51 throw MakeTypeError('incompatible_method_receiver', |
62 ['[Generator].prototype.throw', this]); | 52 ['[Generator].prototype.throw', this]); |
63 } | 53 } |
64 | 54 |
65 return %_GeneratorThrow(this, exn); | 55 return %_GeneratorThrow(this, exn); |
66 } | 56 } |
67 | 57 |
68 function SetUpGenerators() { | 58 function SetUpGenerators() { |
69 %CheckIsBootstrapping(); | 59 %CheckIsBootstrapping(); |
70 var GeneratorObjectPrototype = GeneratorFunctionPrototype.prototype; | 60 var GeneratorObjectPrototype = GeneratorFunctionPrototype.prototype; |
71 InstallFunctions(GeneratorObjectPrototype, | 61 InstallFunctions(GeneratorObjectPrototype, |
72 DONT_ENUM | DONT_DELETE | READ_ONLY, | 62 DONT_ENUM | DONT_DELETE | READ_ONLY, |
73 ["next", GeneratorObjectNext, | 63 ["next", GeneratorObjectNext, |
74 "send", GeneratorObjectSend, | |
75 "throw", GeneratorObjectThrow]); | 64 "throw", GeneratorObjectThrow]); |
76 %SetProperty(GeneratorObjectPrototype, "constructor", | 65 %SetProperty(GeneratorObjectPrototype, "constructor", |
77 GeneratorFunctionPrototype, DONT_ENUM | DONT_DELETE | READ_ONLY); | 66 GeneratorFunctionPrototype, DONT_ENUM | DONT_DELETE | READ_ONLY); |
78 %SetPrototype(GeneratorFunctionPrototype, $Function.prototype); | 67 %SetPrototype(GeneratorFunctionPrototype, $Function.prototype); |
79 %SetProperty(GeneratorFunctionPrototype, "constructor", | 68 %SetProperty(GeneratorFunctionPrototype, "constructor", |
80 GeneratorFunction, DONT_ENUM | DONT_DELETE | READ_ONLY); | 69 GeneratorFunction, DONT_ENUM | DONT_DELETE | READ_ONLY); |
81 %SetPrototype(GeneratorFunction, $Function); | 70 %SetPrototype(GeneratorFunction, $Function); |
82 } | 71 } |
83 | 72 |
84 SetUpGenerators(); | 73 SetUpGenerators(); |
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