[Webkit-unassigned] [Bug 29503] Implement ES5 Object.defineProperty function

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=29503


Oliver Hunt <oliver at apple.com> changed:

           What    |Removed                     |Added
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  Attachment #39791|                            |review?
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--- Comment #2 from Oliver Hunt <oliver at apple.com>  2009-09-18 14:51:48 PDT ---
Created an attachment (id=39791)
 --> (https://bugs.webkit.org/attachment.cgi?id=39791)
Implement ES5 Object.defineProperty function

https://bugs.webkit.org/show_bug.cgi?id=29503

Reviewed by NOBODY(OOPS!)

Implement Object.defineProperty.  This requires adding the API to
ObjectConstructor, along with a helper function that implements the
ES5 internal [[ToPropertyDescriptor]] function.  It then adds
JSObject::defineOwnProperty that implements the appropriate ES5 semantics.
Currently defineOwnProperty uses a delete followed by a put to redefine
attributes of a property, clearly this is less efficient than it could be
but we can improve this if it needs to be possible in future.
---
 33 files changed, 921 insertions(+), 73 deletions(-)

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