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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This files contains runtime support implemented in JavaScript. | 5 // This files contains runtime support implemented in JavaScript. |
6 | 6 |
7 // CAUTION: Some of the functions specified in this file are called | 7 // CAUTION: Some of the functions specified in this file are called |
8 // directly from compiled code. These are the functions with names in | 8 // directly from compiled code. These are the functions with names in |
9 // ALL CAPS. The compiled code passes the first argument in 'this'. | 9 // ALL CAPS. The compiled code passes the first argument in 'this'. |
10 | 10 |
11 | 11 |
12 // The following declarations are shared with other native JS files. | 12 // The following declarations are shared with other native JS files. |
13 // They are all declared at this one spot to avoid redeclaration errors. | 13 // They are all declared at this one spot to avoid redeclaration errors. |
14 | 14 |
15 (function(global, utils) { | 15 (function(global, utils) { |
16 | 16 |
17 %CheckIsBootstrapping(); | 17 %CheckIsBootstrapping(); |
18 | 18 |
19 var FLAG_harmony_species; | 19 var FLAG_harmony_species; |
20 var GlobalArray = global.Array; | 20 var GlobalArray = global.Array; |
21 var GlobalBoolean = global.Boolean; | 21 var GlobalBoolean = global.Boolean; |
22 var GlobalString = global.String; | 22 var GlobalString = global.String; |
23 var MakeRangeError; | 23 var MakeRangeError; |
24 var MakeTypeError; | 24 var MakeTypeError; |
25 var speciesSymbol; | 25 var speciesSymbol; |
| 26 var iteratorSymbol |
26 | 27 |
27 utils.Import(function(from) { | 28 utils.Import(function(from) { |
28 MakeRangeError = from.MakeRangeError; | 29 MakeRangeError = from.MakeRangeError; |
29 MakeTypeError = from.MakeTypeError; | 30 MakeTypeError = from.MakeTypeError; |
30 speciesSymbol = from.species_symbol; | 31 speciesSymbol = from.species_symbol; |
| 32 iteratorSymbol = from.iterator_symbol; |
31 }); | 33 }); |
32 | 34 |
33 utils.ImportFromExperimental(function(from) { | 35 utils.ImportFromExperimental(function(from) { |
34 FLAG_harmony_species = from.FLAG_harmony_species; | 36 FLAG_harmony_species = from.FLAG_harmony_species; |
35 }); | 37 }); |
36 | 38 |
37 // ---------------------------------------------------------------------------- | 39 // ---------------------------------------------------------------------------- |
38 | 40 |
39 /* ------------------------------------- | 41 /* ------------------------------------- |
40 - - - C o n v e r s i o n s - - - | 42 - - - C o n v e r s i o n s - - - |
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60 function SameValueZero(x, y) { | 62 function SameValueZero(x, y) { |
61 if (typeof x !== typeof y) return false; | 63 if (typeof x !== typeof y) return false; |
62 if (IS_NUMBER(x)) { | 64 if (IS_NUMBER(x)) { |
63 if (NUMBER_IS_NAN(x) && NUMBER_IS_NAN(y)) return true; | 65 if (NUMBER_IS_NAN(x) && NUMBER_IS_NAN(y)) return true; |
64 } | 66 } |
65 if (IS_SIMD_VALUE(x)) return %SimdSameValueZero(x, y); | 67 if (IS_SIMD_VALUE(x)) return %SimdSameValueZero(x, y); |
66 return x === y; | 68 return x === y; |
67 } | 69 } |
68 | 70 |
69 | 71 |
70 function ConcatIterableToArray(target, iterable) { | 72 function ConcatIteratorToArray(target, iterator) { |
71 var index = target.length; | 73 var index = target.length; |
| 74 var iterable = { [iteratorSymbol]() { return iterator; } }; |
72 for (var element of iterable) { | 75 for (var element of iterable) { |
73 AddIndexedProperty(target, index++, element); | 76 AddIndexedProperty(target, index++, element); |
74 } | 77 } |
75 return target; | 78 return target; |
76 } | 79 } |
77 | 80 |
78 | 81 |
79 /* --------------------------------- | 82 /* --------------------------------- |
80 - - - U t i l i t i e s - - - | 83 - - - U t i l i t i e s - - - |
81 --------------------------------- | 84 --------------------------------- |
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164 to.AddIndexedProperty = AddIndexedProperty; | 167 to.AddIndexedProperty = AddIndexedProperty; |
165 to.MaxSimple = MaxSimple; | 168 to.MaxSimple = MaxSimple; |
166 to.MinSimple = MinSimple; | 169 to.MinSimple = MinSimple; |
167 to.SameValue = SameValue; | 170 to.SameValue = SameValue; |
168 to.SameValueZero = SameValueZero; | 171 to.SameValueZero = SameValueZero; |
169 to.ToPositiveInteger = ToPositiveInteger; | 172 to.ToPositiveInteger = ToPositiveInteger; |
170 to.SpeciesConstructor = SpeciesConstructor; | 173 to.SpeciesConstructor = SpeciesConstructor; |
171 }); | 174 }); |
172 | 175 |
173 %InstallToContext([ | 176 %InstallToContext([ |
174 "concat_iterable_to_array", ConcatIterableToArray, | 177 "concat_iterator_to_array", ConcatIteratorToArray, |
175 ]); | 178 ]); |
176 | 179 |
177 }) | 180 }) |
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