#ifndef JSFunction_h
#define JSFunction_h
#include "JSObjectWithGlobalObject.h"
namespace JSC {
class ExecutableBase;
class FunctionExecutable;
class FunctionPrototype;
class JSActivation;
class JSGlobalObject;
class NativeExecutable;
class VPtrHackExecutable;
EncodedJSValue JSC_HOST_CALL callHostFunctionAsConstructor(ExecState*);
class JSFunction : public JSObjectWithGlobalObject {
friend class JIT;
friend class JSGlobalData;
typedef JSObjectWithGlobalObject Base;
public:
JSFunction(ExecState*, JSGlobalObject*, Structure*, int length, const Identifier&, NativeFunction);
JSFunction(ExecState*, JSGlobalObject*, Structure*, int length, const Identifier&, NativeExecutable*);
JSFunction(ExecState*, FunctionExecutable*, ScopeChainNode*);
virtual ~JSFunction();
const UString& name(ExecState*);
const UString displayName(ExecState*);
const UString calculatedDisplayName(ExecState*);
ScopeChainNode* scope()
{
ASSERT(!isHostFunctionNonInline());
return m_scopeChain.get();
}
void setScope(JSGlobalData& globalData, ScopeChainNode* scopeChain)
{
ASSERT(!isHostFunctionNonInline());
m_scopeChain.set(globalData, this, scopeChain);
}
ExecutableBase* executable() const { return m_executable.get(); }
inline bool isHostFunction() const;
FunctionExecutable* jsExecutable() const;
static JS_EXPORTDATA const ClassInfo s_info;
static Structure* createStructure(JSGlobalData& globalData, JSValue prototype)
{
return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info);
}
NativeFunction nativeFunction();
virtual ConstructType getConstructData(ConstructData&);
virtual CallType getCallData(CallData&);
protected:
const static unsigned StructureFlags = OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | JSObject::StructureFlags;
private:
explicit JSFunction(VPtrStealingHackType);
bool isHostFunctionNonInline() const;
virtual void preventExtensions(JSGlobalData&);
virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&);
virtual bool getOwnPropertyDescriptor(ExecState*, const Identifier&, PropertyDescriptor&);
virtual void getOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties);
virtual void put(ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&);
virtual bool deleteProperty(ExecState*, const Identifier& propertyName);
virtual void visitChildren(SlotVisitor&);
static JSValue argumentsGetter(ExecState*, JSValue, const Identifier&);
static JSValue callerGetter(ExecState*, JSValue, const Identifier&);
static JSValue lengthGetter(ExecState*, JSValue, const Identifier&);
WriteBarrier<ExecutableBase> m_executable;
WriteBarrier<ScopeChainNode> m_scopeChain;
};
JSFunction* asFunction(JSValue);
inline JSFunction* asFunction(JSValue value)
{
ASSERT(asObject(value)->inherits(&JSFunction::s_info));
return static_cast<JSFunction*>(asObject(value));
}
}
#endif // JSFunction_h