323 lines
12 KiB
C++
323 lines
12 KiB
C++
/*
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* Copyright (C) 2003, 2008-2009, 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "runtime_object.h"
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#include "JSDOMBinding.h"
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#include "WebCoreJSClientData.h"
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#include "runtime_method.h"
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#include <JavaScriptCore/Error.h>
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using namespace WebCore;
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namespace JSC {
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namespace Bindings {
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WEBCORE_EXPORT const ClassInfo RuntimeObject::s_info = { "RuntimeObject", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(RuntimeObject) };
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static JSC_DECLARE_HOST_FUNCTION(convertRuntimeObjectToPrimitive);
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static JSC_DECLARE_HOST_FUNCTION(callRuntimeObject);
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static JSC_DECLARE_HOST_FUNCTION(callRuntimeConstructor);
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static JSC_DECLARE_CUSTOM_GETTER(fallbackObjectGetter);
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static JSC_DECLARE_CUSTOM_GETTER(fieldGetter);
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static JSC_DECLARE_CUSTOM_GETTER(methodGetter);
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RuntimeObject::RuntimeObject(VM& vm, Structure* structure, RefPtr<Instance>&& instance)
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: Base(vm, structure)
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, m_instance(WTFMove(instance))
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{
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}
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void RuntimeObject::finishCreation(VM& vm)
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{
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Base::finishCreation(vm);
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ASSERT(inherits(vm, info()));
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putDirect(vm, vm.propertyNames->toPrimitiveSymbol,
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JSFunction::create(vm, globalObject(vm), 1, "[Symbol.toPrimitive]"_s, convertRuntimeObjectToPrimitive),
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static_cast<unsigned>(PropertyAttribute::DontEnum));
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}
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void RuntimeObject::destroy(JSCell* cell)
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{
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static_cast<RuntimeObject*>(cell)->RuntimeObject::~RuntimeObject();
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}
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void RuntimeObject::invalidate()
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{
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ASSERT(m_instance);
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if (m_instance)
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m_instance->willInvalidateRuntimeObject();
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m_instance = nullptr;
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}
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JSC_DEFINE_CUSTOM_GETTER(fallbackObjectGetter, (JSGlobalObject* lexicalGlobalObject, EncodedJSValue thisValue, PropertyName propertyName))
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{
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VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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RuntimeObject* thisObj = jsCast<RuntimeObject*>(JSValue::decode(thisValue));
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RefPtr<Instance> instance = thisObj->getInternalInstance();
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if (!instance)
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return JSValue::encode(throwRuntimeObjectInvalidAccessError(lexicalGlobalObject, scope));
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instance->begin();
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Class *aClass = instance->getClass();
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JSValue result = aClass->fallbackObject(lexicalGlobalObject, instance.get(), propertyName);
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instance->end();
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return JSValue::encode(result);
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}
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JSC_DEFINE_CUSTOM_GETTER(fieldGetter, (JSGlobalObject* lexicalGlobalObject, EncodedJSValue thisValue, PropertyName propertyName))
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{
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VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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RuntimeObject* thisObj = jsCast<RuntimeObject*>(JSValue::decode(thisValue));
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RefPtr<Instance> instance = thisObj->getInternalInstance();
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if (!instance)
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return JSValue::encode(throwRuntimeObjectInvalidAccessError(lexicalGlobalObject, scope));
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instance->begin();
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Class *aClass = instance->getClass();
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Field* aField = aClass->fieldNamed(propertyName, instance.get());
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JSValue result = aField->valueFromInstance(lexicalGlobalObject, instance.get());
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instance->end();
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return JSValue::encode(result);
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}
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JSC_DEFINE_CUSTOM_GETTER(methodGetter, (JSGlobalObject* lexicalGlobalObject, EncodedJSValue thisValue, PropertyName propertyName))
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{
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VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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RuntimeObject* thisObj = jsCast<RuntimeObject*>(JSValue::decode(thisValue));
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RefPtr<Instance> instance = thisObj->getInternalInstance();
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if (!instance)
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return JSValue::encode(throwRuntimeObjectInvalidAccessError(lexicalGlobalObject, scope));
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instance->begin();
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JSValue method = instance->getMethod(lexicalGlobalObject, propertyName);
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instance->end();
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return JSValue::encode(method);
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}
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bool RuntimeObject::getOwnPropertySlot(JSObject* object, JSGlobalObject* lexicalGlobalObject, PropertyName propertyName, PropertySlot& slot)
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{
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VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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RuntimeObject* thisObject = jsCast<RuntimeObject*>(object);
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if (!thisObject->m_instance) {
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throwRuntimeObjectInvalidAccessError(lexicalGlobalObject, scope);
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return false;
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}
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if (propertyName.uid() == vm.propertyNames->toPrimitiveSymbol.impl())
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return JSObject::getOwnPropertySlot(thisObject, lexicalGlobalObject, propertyName, slot);
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RefPtr<Instance> instance = thisObject->m_instance;
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instance->begin();
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Class *aClass = instance->getClass();
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if (aClass) {
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// See if the instance has a field with the specified name.
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Field *aField = aClass->fieldNamed(propertyName, instance.get());
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if (aField) {
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slot.setCustom(thisObject, static_cast<unsigned>(JSC::PropertyAttribute::DontDelete), fieldGetter);
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instance->end();
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return true;
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} else {
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// Now check if a method with specified name exists, if so return a function object for
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// that method.
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if (aClass->methodNamed(propertyName, instance.get())) {
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slot.setCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly, methodGetter);
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instance->end();
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return true;
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}
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}
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// Try a fallback object.
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if (!aClass->fallbackObject(lexicalGlobalObject, instance.get(), propertyName).isUndefined()) {
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slot.setCustom(thisObject, PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum, fallbackObjectGetter);
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instance->end();
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return true;
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}
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}
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instance->end();
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return instance->getOwnPropertySlot(thisObject, lexicalGlobalObject, propertyName, slot);
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}
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bool RuntimeObject::put(JSCell* cell, JSGlobalObject* lexicalGlobalObject, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
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{
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VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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RuntimeObject* thisObject = jsCast<RuntimeObject*>(cell);
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if (!thisObject->m_instance) {
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throwRuntimeObjectInvalidAccessError(lexicalGlobalObject, scope);
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return false;
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}
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RefPtr<Instance> instance = thisObject->m_instance;
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instance->begin();
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// Set the value of the property.
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bool result = false;
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Field *aField = instance->getClass()->fieldNamed(propertyName, instance.get());
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if (aField)
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result = aField->setValueToInstance(lexicalGlobalObject, instance.get(), value);
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else if (!instance->setValueOfUndefinedField(lexicalGlobalObject, propertyName, value))
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result = instance->put(thisObject, lexicalGlobalObject, propertyName, value, slot);
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instance->end();
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return result;
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}
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bool RuntimeObject::deleteProperty(JSCell*, JSGlobalObject*, PropertyName, DeletePropertySlot&)
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{
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// Can never remove a property of a RuntimeObject.
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return false;
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}
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JSC_DEFINE_HOST_FUNCTION(convertRuntimeObjectToPrimitive, (JSGlobalObject* lexicalGlobalObject, CallFrame* callFrame))
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{
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VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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auto* thisObject = jsDynamicCast<RuntimeObject*>(vm, callFrame->thisValue());
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if (!thisObject)
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return throwVMTypeError(lexicalGlobalObject, scope, "RuntimeObject[Symbol.toPrimitive] method called on incompatible |this| value."_s);
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auto instance = makeRefPtr(thisObject->getInternalInstance());
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if (!instance)
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return JSValue::encode(throwRuntimeObjectInvalidAccessError(lexicalGlobalObject, scope));
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auto hint = toPreferredPrimitiveType(lexicalGlobalObject, callFrame->argument(0));
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RETURN_IF_EXCEPTION(scope, { });
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instance->begin();
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JSValue result = instance->defaultValue(lexicalGlobalObject, hint);
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instance->end();
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return JSValue::encode(result);
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}
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JSC_DEFINE_HOST_FUNCTION(callRuntimeObject, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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ASSERT_UNUSED(globalObject, callFrame->jsCallee()->inherits<RuntimeObject>(globalObject->vm()));
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RefPtr<Instance> instance(static_cast<RuntimeObject*>(callFrame->jsCallee())->getInternalInstance());
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instance->begin();
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JSValue result = instance->invokeDefaultMethod(globalObject, callFrame);
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instance->end();
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return JSValue::encode(result);
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}
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CallData RuntimeObject::getCallData(JSCell* cell)
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{
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CallData callData;
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RuntimeObject* thisObject = jsCast<RuntimeObject*>(cell);
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if (thisObject->m_instance && thisObject->m_instance->supportsInvokeDefaultMethod()) {
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callData.type = CallData::Type::Native;
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callData.native.function = callRuntimeObject;
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}
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return callData;
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}
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JSC_DEFINE_HOST_FUNCTION(callRuntimeConstructor, (JSGlobalObject* globalObject, CallFrame* callFrame))
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{
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JSObject* constructor = callFrame->jsCallee();
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ASSERT_UNUSED(globalObject, constructor->inherits<RuntimeObject>(globalObject->vm()));
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RefPtr<Instance> instance(static_cast<RuntimeObject*>(callFrame->jsCallee())->getInternalInstance());
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instance->begin();
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ArgList args(callFrame);
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JSValue result = instance->invokeConstruct(globalObject, callFrame, args);
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instance->end();
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ASSERT(result);
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return JSValue::encode(result.isObject() ? jsCast<JSObject*>(result.asCell()) : constructor);
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}
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CallData RuntimeObject::getConstructData(JSCell* cell)
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{
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CallData constructData;
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RuntimeObject* thisObject = jsCast<RuntimeObject*>(cell);
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if (thisObject->m_instance && thisObject->m_instance->supportsConstruct()) {
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constructData.type = CallData::Type::Native;
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constructData.native.function = callRuntimeConstructor;
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}
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return constructData;
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}
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void RuntimeObject::getOwnPropertyNames(JSObject* object, JSGlobalObject* lexicalGlobalObject, PropertyNameArray& propertyNames, DontEnumPropertiesMode)
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{
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VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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RuntimeObject* thisObject = jsCast<RuntimeObject*>(object);
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if (!thisObject->m_instance) {
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throwRuntimeObjectInvalidAccessError(lexicalGlobalObject, scope);
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return;
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}
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RefPtr<Instance> instance = thisObject->m_instance;
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instance->begin();
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instance->getPropertyNames(lexicalGlobalObject, propertyNames);
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instance->end();
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}
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Exception* throwRuntimeObjectInvalidAccessError(JSGlobalObject* lexicalGlobalObject, ThrowScope& scope)
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{
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return throwException(lexicalGlobalObject, scope, createReferenceError(lexicalGlobalObject, "Trying to access object from destroyed plug-in."));
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}
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JSC::IsoSubspace* RuntimeObject::subspaceForImpl(JSC::VM& vm)
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{
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return &static_cast<JSVMClientData*>(vm.clientData)->runtimeObjectSpace();
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}
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}
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}
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