Introduced JSWithScope, making all scope objects subclasses of JSScope
https://bugs.webkit.org/show_bug.cgi?id=95295
Reviewed by Filip Pizlo.
This is a step toward removing ScopeChainNode. With a uniform representation
for objects in the scope chain, we can move data from ScopeChainNode
into JSScope.
- CMakeLists.txt:
- GNUmakefile.list.am:
- JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
- JavaScriptCore.xcodeproj/project.pbxproj:
- Target.pri: Build!
- interpreter/Interpreter.cpp:
(JSC::Interpreter::privateExecute):
(JSC::DEFINE_STUB_FUNCTION):
- llint/LLIntSlowPaths.cpp:
(JSC::LLInt::LLINT_SLOW_PATH_DECL): Use an explicit JSWithScope object
for 'with' statements. Since 'with' can put any object in the scope
chain, we'll need an adapter object to hold the data ScopeChainNode
currently holds.
- runtime/JSGlobalData.cpp:
(JSC::JSGlobalData::JSGlobalData):
(JSGlobalData): Support for JSWithScope.
(JSC::JSScope::objectAtScope):
- runtime/JSScope.h: Check for and unwrap JSWithScope.
- runtime/JSType.h: Support for JSWithScope.
- runtime/StrictEvalActivation.cpp:
(JSC::StrictEvalActivation::StrictEvalActivation):
- runtime/StrictEvalActivation.h:
(StrictEvalActivation): Inherit from JSScope, to make the scope chain uniform.
- runtime/JSWithScope.cpp: Added.
(JSC::JSWithScope::visitChildren):
- runtime/JSWithScope.h: Added.
(JSWithScope):
(JSC::JSWithScope::create):
(JSC::JSWithScope::object):
(JSC::JSWithScope::createStructure):
(JSC::JSWithScope::JSWithScope): New adapter object. Since this object
is never exposed to scripts, it doesn't need any meaningful implementation
of property access or other callbacks.
