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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 // 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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389 /* ------------------------------------- | 389 /* ------------------------------------- |
390 - - - C o n v e r s i o n s - - - | 390 - - - C o n v e r s i o n s - - - |
391 ------------------------------------- | 391 ------------------------------------- |
392 */ | 392 */ |
393 | 393 |
394 // ECMA-262, section 9.1, page 30. Use null/undefined for no hint, | 394 // ECMA-262, section 9.1, page 30. Use null/undefined for no hint, |
395 // (1) for number hint, and (2) for string hint. | 395 // (1) for number hint, and (2) for string hint. |
396 function ToPrimitive(x, hint) { | 396 function ToPrimitive(x, hint) { |
397 // Fast case check. | 397 // Fast case check. |
398 if (IS_STRING(x)) return x; | 398 if (IS_STRING(x)) return x; |
399 if ((hint != NUMBER_HINT) && %IsStringClass(x)) return %_ValueOf(x); | |
400 // Normal behaior. | 399 // Normal behaior. |
401 if (!IS_OBJECT(x) && !IS_FUNCTION(x)) return x; | 400 if (!IS_OBJECT(x) && !IS_FUNCTION(x)) return x; |
402 if (x == null) return x; // check for null, undefined | 401 if (x == null) return x; // check for null, undefined |
403 if (hint == NO_HINT) hint = (IS_DATE(x)) ? STRING_HINT : NUMBER_HINT; | 402 if (hint == NO_HINT) hint = (IS_DATE(x)) ? STRING_HINT : NUMBER_HINT; |
404 return (hint == NUMBER_HINT) ? %DefaultNumber(x) : %DefaultString(x); | 403 return (hint == NUMBER_HINT) ? %DefaultNumber(x) : %DefaultString(x); |
405 } | 404 } |
406 | 405 |
407 | 406 |
408 // ECMA-262, section 9.3, page 31. | 407 // ECMA-262, section 9.3, page 31. |
409 function ToNumber(x) { | 408 function ToNumber(x) { |
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516 throw %MakeTypeError('cannot_convert_to_primitive', []); | 515 throw %MakeTypeError('cannot_convert_to_primitive', []); |
517 } | 516 } |
518 | 517 |
519 | 518 |
520 // NOTE: Setting the prototype for Array must take place as early as | 519 // NOTE: Setting the prototype for Array must take place as early as |
521 // possible due to code generation for array literals. When | 520 // possible due to code generation for array literals. When |
522 // generating code for a array literal a boilerplate array is created | 521 // generating code for a array literal a boilerplate array is created |
523 // that is cloned when running the code. It is essiential that the | 522 // that is cloned when running the code. It is essiential that the |
524 // boilerplate gets the right prototype. | 523 // boilerplate gets the right prototype. |
525 %FunctionSetPrototype($Array, new $Array(0)); | 524 %FunctionSetPrototype($Array, new $Array(0)); |
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