neis
79634a3ffe
[es6] Partially implement Reflect.preventExtensions.
...
Ignore proxies for now.
R=rossberg
BUG=v8:3931
LOG=n
Review URL: https://codereview.chromium.org/1397853005
Cr-Commit-Position: refs/heads/master@{#31431}
2015-10-21 09:23:47 +00:00
adamk
4fa7ae1c07
Optimize Object.seal and Object.preventExtensions
...
They both now run fast (due to utilizing transitions instead of always
creating new maps) and sealed or non-extensible objects can stay in
fast mode after transitioning.
This almost entirely reuses the code for transitioning objects
frozen by Object.freeze(), with the added benefit of freeing
up a bit on the map (we no longer keep track of frozen-ness,
as that bit wasn't used for anything interesting).
BUG=v8:3662,chromium:115960
LOG=y
Review URL: https://codereview.chromium.org/776143005
Cr-Commit-Position: refs/heads/master@{#25759}
2014-12-10 20:02:59 +00:00
rossberg@chromium.org
e414be5fc6
After assignment return right hand side value instead of undefined
...
when Object.isExtensible(o) === false
Added corresponding tests
ES5 description: http://es5.github.com/#x11.13.1
Related issue: http://code.google.com/p/v8/issues/detail?id=1901
Contributed by ioseb.dzmanashvili@gmail.com
BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com/9429002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10783 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-02-21 14:09:45 +00:00
yangguo@chromium.org
86a62d0da3
Added check for trailing whitespaces and corrected existing violations.
...
Review URL: http://codereview.chromium.org/7826007
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9094 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-09-01 11:28:10 +00:00
ricow@chromium.org
fb6d7e17df
Follow jsc on not throwing when trying to add a property to a non-extensible object.
...
This change makes us compatible with Safari on not throwing when trying to add a property to a non-extensible object.
Review URL: http://codereview.chromium.org/6712059
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7379 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-03-28 06:11:08 +00:00
ricow@chromium.org
eed4ed99c8
Add ES5 Object.isExtensible and Object.preventExtensions.
...
Review URL: http://codereview.chromium.org/2819034
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5011 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-07-02 14:36:34 +00:00
