2 * Copyright (C) 2011 Apple Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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27 #include "JSBoundFunction.h"
29 #include "JSGlobalObject.h"
33 ASSERT_CLASS_FITS_IN_CELL(JSBoundFunction);
35 const ClassInfo JSBoundFunction::s_info = { "Function", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(JSBoundFunction) };
37 EncodedJSValue JSC_HOST_CALL boundFunctionCall(ExecState* exec)
39 JSBoundFunction* boundFunction = static_cast<JSBoundFunction*>(exec->callee());
41 ASSERT(isJSArray(&exec->globalData(), boundFunction->boundArgs())); // Currently this is true!
42 JSArray* boundArgs = asArray(boundFunction->boundArgs());
44 MarkedArgumentBuffer args;
45 for (unsigned i = 0; i < boundArgs->length(); ++i)
46 args.append(boundArgs->getIndex(i));
47 for (unsigned i = 0; i < exec->argumentCount(); ++i)
48 args.append(exec->argument(i));
50 JSObject* targetFunction = boundFunction->targetFunction();
52 CallType callType = getCallData(targetFunction, callData);
53 ASSERT(callType != CallTypeNone);
54 return JSValue::encode(call(exec, targetFunction, callType, callData, boundFunction->boundThis(), args));
57 EncodedJSValue JSC_HOST_CALL boundFunctionConstruct(ExecState* exec)
59 JSBoundFunction* boundFunction = static_cast<JSBoundFunction*>(exec->callee());
61 ASSERT(isJSArray(&exec->globalData(), boundFunction->boundArgs())); // Currently this is true!
62 JSArray* boundArgs = asArray(boundFunction->boundArgs());
64 MarkedArgumentBuffer args;
65 for (unsigned i = 0; i < boundArgs->length(); ++i)
66 args.append(boundArgs->getIndex(i));
67 for (unsigned i = 0; i < exec->argumentCount(); ++i)
68 args.append(exec->argument(i));
70 JSObject* targetFunction = boundFunction->targetFunction();
71 ConstructData constructData;
72 ConstructType constructType = getConstructData(targetFunction, constructData);
73 ASSERT(constructType != ConstructTypeNone);
74 return JSValue::encode(construct(exec, targetFunction, constructType, constructData, args));
77 JSBoundFunction* JSBoundFunction::create(ExecState* exec, JSGlobalObject* globalObject, JSObject* targetFunction, JSValue boundThis, JSValue boundArgs, int length, const Identifier& name)
79 ConstructData constructData;
80 ConstructType constructType = JSC::getConstructData(targetFunction, constructData);
81 bool canConstruct = constructType != ConstructTypeNone;
83 NativeExecutable* executable = exec->globalData().getHostFunction(boundFunctionCall, canConstruct ? boundFunctionConstruct : callHostFunctionAsConstructor);
84 JSBoundFunction* function = new (allocateCell<JSBoundFunction>(*exec->heap())) JSBoundFunction(exec, globalObject, globalObject->boundFunctionStructure(), targetFunction, boundThis, boundArgs);
86 function->finishCreation(exec, executable, length, name);
90 bool JSBoundFunction::hasInstance(JSObject* object, ExecState* exec, JSValue value, JSValue)
92 JSBoundFunction* thisObject = jsCast<JSBoundFunction*>(object);
93 // FIXME: our instanceof implementation will have already (incorrectly) performed
94 // a [[Get]] of .prototype from the bound function object, which is incorrect!
95 // https://bugs.webkit.org/show_bug.cgi?id=68656
96 JSValue proto = thisObject->m_targetFunction->get(exec, exec->propertyNames().prototype);
97 return thisObject->m_targetFunction->methodTable()->hasInstance(thisObject->m_targetFunction.get(), exec, value, proto);
100 JSBoundFunction::JSBoundFunction(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, JSObject* targetFunction, JSValue boundThis, JSValue boundArgs)
101 : Base(exec, globalObject, structure)
102 , m_targetFunction(exec->globalData(), this, targetFunction)
103 , m_boundThis(exec->globalData(), this, boundThis)
104 , m_boundArgs(exec->globalData(), this, boundArgs)
108 void JSBoundFunction::finishCreation(ExecState* exec, NativeExecutable* executable, int length, const Identifier& name)
110 Base::finishCreation(exec, executable, length, name);
111 ASSERT(inherits(&s_info));
113 initializeGetterSetterProperty(exec, exec->propertyNames().arguments, globalObject()->throwTypeErrorGetterSetter(exec), DontDelete | DontEnum | Getter | Setter);
114 initializeGetterSetterProperty(exec, exec->propertyNames().caller, globalObject()->throwTypeErrorGetterSetter(exec), DontDelete | DontEnum | Getter | Setter);
117 void JSBoundFunction::visitChildren(JSCell* cell, SlotVisitor& visitor)
119 JSBoundFunction* thisObject = jsCast<JSBoundFunction*>(cell);
120 ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
121 COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
122 ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
123 Base::visitChildren(thisObject, visitor);
125 visitor.append(&thisObject->m_targetFunction);
126 visitor.append(&thisObject->m_boundThis);
127 visitor.append(&thisObject->m_boundArgs);