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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 |
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| 710 var spreadable = O[isConcatSpreadableSymbol]; | 710 var spreadable = O[isConcatSpreadableSymbol]; |
| 711 if (IS_UNDEFINED(spreadable)) return IS_ARRAY(O); | 711 if (IS_UNDEFINED(spreadable)) return IS_ARRAY(O); |
| 712 return ToBoolean(spreadable); | 712 return ToBoolean(spreadable); |
| 713 } | 713 } |
| 714 | 714 |
| 715 | 715 |
| 716 // ECMA-262, section 8.6.2.6, page 28. | 716 // ECMA-262, section 8.6.2.6, page 28. |
| 717 function DefaultNumber(x) { | 717 function DefaultNumber(x) { |
| 718 var valueOf = x.valueOf; | 718 var valueOf = x.valueOf; |
| 719 if (IS_CALLABLE(valueOf)) { | 719 if (IS_CALLABLE(valueOf)) { |
| 720 var v = %_CallFunction(x, valueOf); | 720 var v = %_Call(valueOf, x); |
| 721 if (IS_SYMBOL(v)) throw MakeTypeError(kSymbolToNumber); | 721 if (IS_SYMBOL(v)) throw MakeTypeError(kSymbolToNumber); |
| 722 if (IS_SIMD_VALUE(x)) throw MakeTypeError(kSimdToNumber); | 722 if (IS_SIMD_VALUE(x)) throw MakeTypeError(kSimdToNumber); |
| 723 if (IsPrimitive(v)) return v; | 723 if (IsPrimitive(v)) return v; |
| 724 } | 724 } |
| 725 var toString = x.toString; | 725 var toString = x.toString; |
| 726 if (IS_CALLABLE(toString)) { | 726 if (IS_CALLABLE(toString)) { |
| 727 var s = %_CallFunction(x, toString); | 727 var s = %_Call(toString, x); |
| 728 if (IsPrimitive(s)) return s; | 728 if (IsPrimitive(s)) return s; |
| 729 } | 729 } |
| 730 throw MakeTypeError(kCannotConvertToPrimitive); | 730 throw MakeTypeError(kCannotConvertToPrimitive); |
| 731 } | 731 } |
| 732 | 732 |
| 733 // ECMA-262, section 8.6.2.6, page 28. | 733 // ECMA-262, section 8.6.2.6, page 28. |
| 734 function DefaultString(x) { | 734 function DefaultString(x) { |
| 735 if (!IS_SYMBOL_WRAPPER(x)) { | 735 if (!IS_SYMBOL_WRAPPER(x)) { |
| 736 if (IS_SYMBOL(x)) throw MakeTypeError(kSymbolToString); | 736 if (IS_SYMBOL(x)) throw MakeTypeError(kSymbolToString); |
| 737 var toString = x.toString; | 737 var toString = x.toString; |
| 738 if (IS_CALLABLE(toString)) { | 738 if (IS_CALLABLE(toString)) { |
| 739 var s = %_CallFunction(x, toString); | 739 var s = %_Call(toString, x); |
| 740 if (IsPrimitive(s)) return s; | 740 if (IsPrimitive(s)) return s; |
| 741 } | 741 } |
| 742 | 742 |
| 743 var valueOf = x.valueOf; | 743 var valueOf = x.valueOf; |
| 744 if (IS_CALLABLE(valueOf)) { | 744 if (IS_CALLABLE(valueOf)) { |
| 745 var v = %_CallFunction(x, valueOf); | 745 var v = %_Call(valueOf, x); |
| 746 if (IsPrimitive(v)) return v; | 746 if (IsPrimitive(v)) return v; |
| 747 } | 747 } |
| 748 } | 748 } |
| 749 throw MakeTypeError(kCannotConvertToPrimitive); | 749 throw MakeTypeError(kCannotConvertToPrimitive); |
| 750 } | 750 } |
| 751 | 751 |
| 752 function ToPositiveInteger(x, rangeErrorIndex) { | 752 function ToPositiveInteger(x, rangeErrorIndex) { |
| 753 var i = TO_INTEGER_MAP_MINUS_ZERO(x); | 753 var i = TO_INTEGER_MAP_MINUS_ZERO(x); |
| 754 if (i < 0) throw MakeRangeError(rangeErrorIndex); | 754 if (i < 0) throw MakeRangeError(rangeErrorIndex); |
| 755 return i; | 755 return i; |
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| 830 | 830 |
| 831 utils.Export(function(to) { | 831 utils.Export(function(to) { |
| 832 to.ToBoolean = ToBoolean; | 832 to.ToBoolean = ToBoolean; |
| 833 to.ToLength = ToLength; | 833 to.ToLength = ToLength; |
| 834 to.ToNumber = ToNumber; | 834 to.ToNumber = ToNumber; |
| 835 to.ToPrimitive = ToPrimitive; | 835 to.ToPrimitive = ToPrimitive; |
| 836 to.ToString = ToString; | 836 to.ToString = ToString; |
| 837 }); | 837 }); |
| 838 | 838 |
| 839 }) | 839 }) |
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