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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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387 var parameters = %NewArguments(delegate); | 387 var parameters = %NewArguments(delegate); |
388 return delegate.apply(callee, parameters); | 388 return delegate.apply(callee, parameters); |
389 } | 389 } |
390 | 390 |
391 | 391 |
392 function APPLY_PREPARE(args) { | 392 function APPLY_PREPARE(args) { |
393 var length; | 393 var length; |
394 // First check whether length is a positive Smi and args is an | 394 // First check whether length is a positive Smi and args is an |
395 // array. This is the fast case. If this fails, we do the slow case | 395 // array. This is the fast case. If this fails, we do the slow case |
396 // that takes care of more eventualities. | 396 // that takes care of more eventualities. |
397 if (%_IsArray(args)) { | 397 if (IS_ARRAY(args)) { |
398 length = args.length; | 398 length = args.length; |
399 if (%_IsSmi(length) && length >= 0 && length < 0x800000 && IS_FUNCTION(this)
) { | 399 if (%_IsSmi(length) && length >= 0 && length < 0x800000 && IS_FUNCTION(this)
) { |
400 return length; | 400 return length; |
401 } | 401 } |
402 } | 402 } |
403 | 403 |
404 length = (args == null) ? 0 : %ToUint32(args.length); | 404 length = (args == null) ? 0 : %ToUint32(args.length); |
405 | 405 |
406 // We can handle any number of apply arguments if the stack is | 406 // We can handle any number of apply arguments if the stack is |
407 // big enough, but sanity check the value to avoid overflow when | 407 // big enough, but sanity check the value to avoid overflow when |
408 // multiplying with pointer size. | 408 // multiplying with pointer size. |
409 if (length > 0x800000) { | 409 if (length > 0x800000) { |
410 throw %MakeRangeError('apply_overflow', [length]); | 410 throw %MakeRangeError('apply_overflow', [length]); |
411 } | 411 } |
412 | 412 |
413 if (!IS_FUNCTION(this)) { | 413 if (!IS_FUNCTION(this)) { |
414 throw %MakeTypeError('apply_non_function', [ %ToString(this), typeof this ])
; | 414 throw %MakeTypeError('apply_non_function', [ %ToString(this), typeof this ])
; |
415 } | 415 } |
416 | 416 |
417 // Make sure the arguments list has the right type. | 417 // Make sure the arguments list has the right type. |
418 if (args != null && | 418 if (args != null && !IS_ARRAY(args) && !IS_ARGUMENTS(args)) { |
419 !%HasArrayClass(args) && | |
420 !%HasArgumentsClass(args)) { | |
421 throw %MakeTypeError('apply_wrong_args', []); | 419 throw %MakeTypeError('apply_wrong_args', []); |
422 } | 420 } |
423 | 421 |
424 // Return the length which is the number of arguments to copy to the | 422 // Return the length which is the number of arguments to copy to the |
425 // stack. It is guaranteed to be a small integer at this point. | 423 // stack. It is guaranteed to be a small integer at this point. |
426 return length; | 424 return length; |
427 } | 425 } |
428 | 426 |
429 | 427 |
430 function APPLY_OVERFLOW(length) { | 428 function APPLY_OVERFLOW(length) { |
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579 throw %MakeTypeError('cannot_convert_to_primitive', []); | 577 throw %MakeTypeError('cannot_convert_to_primitive', []); |
580 } | 578 } |
581 | 579 |
582 | 580 |
583 // NOTE: Setting the prototype for Array must take place as early as | 581 // NOTE: Setting the prototype for Array must take place as early as |
584 // possible due to code generation for array literals. When | 582 // possible due to code generation for array literals. When |
585 // generating code for a array literal a boilerplate array is created | 583 // generating code for a array literal a boilerplate array is created |
586 // that is cloned when running the code. It is essiential that the | 584 // that is cloned when running the code. It is essiential that the |
587 // boilerplate gets the right prototype. | 585 // boilerplate gets the right prototype. |
588 %FunctionSetPrototype($Array, new $Array(0)); | 586 %FunctionSetPrototype($Array, new $Array(0)); |
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