Add newTarget accessor to JS constructor written in C++
https://bugs.webkit.org/show_bug.cgi?id=147160
Reviewed by Geoffrey Garen.
This patch adds `ExecState#newTarget()` which returns `new.target` defined in ECMA262 6th.
It enables some C++ constructors (like Intl.XXX constructors) to leverage this to complete
its implementation.
When the constructor is called, |this| in the arguments is used for storing new.target instead.
So by adding the accessor for |this|, JS constructor written in C++ can access new.target.
And at the same time, this patch extends the existing `construct` to accept new.target value.
It is corresponding to the spec's Construct abstract operation.
* interpreter/CallFrame.h:
(JSC::ExecState::newTarget):
* interpreter/Interpreter.cpp:
(JSC::Interpreter::executeConstruct):
* interpreter/Interpreter.h:
* runtime/ConstructData.cpp:
(JSC::construct):
* runtime/ConstructData.h:
(JSC::construct):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@187142 268f45cc-cd09-0410-ab3c-d52691b4dbfc
6 files changed
