webkitgtk-2.4.11webkitgtk-2.4.11

1 files changed, 0 insertions, 311 deletions

diff --git a/Source/JavaScriptCore/runtime/ProxyObject.cpp b/Source/JavaScriptCore/runtime/ProxyObject.cpp
deleted file mode 100644
index 6ea856d73..000000000
--- a/Source/JavaScriptCore/runtime/ProxyObject.cpp
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * Copyright (C) 2016 Apple Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "ProxyObject.h"
-
-#include "Error.h"
-#include "IdentifierInlines.h"
-#include "JSCJSValueInlines.h"
-#include "JSCellInlines.h"
-#include "ObjectConstructor.h"
-#include "SlotVisitorInlines.h"
-#include "StructureInlines.h"
-
-namespace JSC {
-
-STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ProxyObject);
-
-const ClassInfo ProxyObject::s_info = { "ProxyObject", &Base::s_info, 0, CREATE_METHOD_TABLE(ProxyObject) };
-
-ProxyObject::ProxyObject(VM& vm, Structure* structure)
-    : Base(vm, structure)
-{
-}
-
-void ProxyObject::finishCreation(VM& vm, ExecState* exec, JSValue target, JSValue handler)
-{
-    Base::finishCreation(vm);
-    if (!target.isObject()) {
-        throwTypeError(exec, ASCIILiteral("A Proxy's 'target' should be an Object"));
-        return;
-    }
-    if (ProxyObject* targetAsProxy = jsDynamicCast<ProxyObject*>(target)) {
-        // FIXME: Add tests for this once we implement Proxy.revoke(.).
-        // https://bugs.webkit.org/show_bug.cgi?id=154321
-        if (targetAsProxy->handler().isNull()) {
-            throwTypeError(exec, ASCIILiteral("If a Proxy's handler is another Proxy object, the other Proxy object must have a non-null handler."));
-            return;
-        }
-    }
-    if (!handler.isObject()) {
-        throwTypeError(exec, ASCIILiteral("A Proxy's 'handler' should be an Object"));
-        return;
-    }
-
-    m_target.set(vm, this, jsCast<JSObject*>(target));
-    m_handler.set(vm, this, handler);
-}
-
-static EncodedJSValue performProxyGet(ExecState* exec, EncodedJSValue thisValue, PropertyName propertyName)
-{
-    VM& vm = exec->vm();
-    JSObject* thisObject = jsCast<JSObject*>(JSValue::decode(thisValue)); // This might be a value where somewhere in __proto__ chain lives a ProxyObject.
-    JSObject* proxyObjectAsObject = thisObject;
-    // FIXME: make it so that custom getters take both the |this| value and the slotBase (property holder).
-    // https://bugs.webkit.org/show_bug.cgi?id=154320
-    while (true) {
-        if (LIKELY(proxyObjectAsObject->inherits(ProxyObject::info())))
-            break;
-
-        Structure& structure = *vm.heap.structureIDTable().get(proxyObjectAsObject->structureID());
-        JSValue prototype = structure.storedPrototype();
-        RELEASE_ASSERT(prototype.isObject());
-        proxyObjectAsObject = asObject(prototype);
-    }
-
-    ProxyObject* proxyObject = jsCast<ProxyObject*>(proxyObjectAsObject);
-    JSValue handlerValue = proxyObject->handler();
-    if (handlerValue.isNull())
-        return throwVMTypeError(exec, ASCIILiteral("Proxy 'handler' is null. It should be an Object."));
-
-    JSObject* handler = jsCast<JSObject*>(handlerValue);
-    CallData callData;
-    CallType callType;
-    JSValue getHandler = handler->getMethod(exec, callData, callType, vm.propertyNames->get, ASCIILiteral("'get' property of a Proxy's handler object should be callable."));
-    if (exec->hadException())
-        return JSValue::encode(jsUndefined());
-
-    JSObject* target = proxyObject->target();
-    if (getHandler.isUndefined())
-        return JSValue::encode(target->get(exec, propertyName));
-
-    MarkedArgumentBuffer arguments;
-    arguments.append(target);
-    arguments.append(identifierToSafePublicJSValue(vm, Identifier::fromUid(&vm, propertyName.uid())));
-    if (exec->hadException())
-        return JSValue::encode(jsUndefined());
-    arguments.append(thisObject);
-    JSValue trapResult = call(exec, getHandler, callType, callData, handler, arguments);
-    if (exec->hadException())
-        return JSValue::encode(jsUndefined());
-
-    PropertyDescriptor descriptor;
-    if (target->getOwnPropertyDescriptor(exec, propertyName, descriptor)) {
-        if (descriptor.isDataDescriptor() && !descriptor.configurable() && !descriptor.writable()) {
-            if (!sameValue(exec, descriptor.value(), trapResult))
-                return throwVMTypeError(exec, ASCIILiteral("Proxy handler's 'get' result of a non-configurable and non-writable property should be the same value as the target's property."));
-        } else if (descriptor.isAccessorDescriptor() && !descriptor.configurable() && descriptor.getter().isUndefined()) {
-            if (!trapResult.isUndefined())
-                return throwVMTypeError(exec, ASCIILiteral("Proxy handler's 'get' result of a non-configurable accessor property without a getter should be undefined."));
-        }
-    }
-
-    if (exec->hadException())
-        return JSValue::encode(jsUndefined());
-
-    return JSValue::encode(trapResult);
-}
-
-bool ProxyObject::performInternalMethodGetOwnProperty(ExecState* exec, PropertyName propertyName, PropertySlot& slot)
-{
-    VM& vm = exec->vm();
-    slot.setValue(this, None, jsUndefined()); // We do this to protect against any bad actors. Nobody should depend on this value.
-    JSValue handlerValue = this->handler();
-    if (handlerValue.isNull()) {
-        throwVMTypeError(exec, ASCIILiteral("Proxy 'handler' is null. It should be an Object."));
-        return false;
-    }
-
-    JSObject* handler = jsCast<JSObject*>(handlerValue);
-    CallData callData;
-    CallType callType;
-    JSValue getOwnPropertyDescriptorMethod = handler->getMethod(exec, callData, callType, makeIdentifier(vm, "getOwnPropertyDescriptor"), ASCIILiteral("'getOwnPropertyDescriptor' property of a Proxy's handler should be callable."));
-    if (exec->hadException())
-        return false;
-    JSObject* target = this->target();
-    if (getOwnPropertyDescriptorMethod.isUndefined())
-        return target->methodTable(vm)->getOwnPropertySlot(target, exec, propertyName, slot);
-
-    MarkedArgumentBuffer arguments;
-    arguments.append(target);
-    arguments.append(identifierToSafePublicJSValue(vm, Identifier::fromUid(&vm, propertyName.uid())));
-    if (exec->hadException())
-        return false;
-    JSValue trapResult = call(exec, getOwnPropertyDescriptorMethod, callType, callData, handler, arguments);
-    if (exec->hadException())
-        return false;
-
-    if (!trapResult.isUndefined() && !trapResult.isObject()) {
-        throwVMTypeError(exec, ASCIILiteral("result of 'getOwnPropertyDescriptor' call should either be an Object or undefined."));
-        return false;
-    }
-
-    PropertyDescriptor targetPropertyDescriptor;
-    bool isTargetPropertyDescriptorDefined = target->getOwnPropertyDescriptor(exec, propertyName, targetPropertyDescriptor);
-    if (exec->hadException())
-        return false;
-
-    if (trapResult.isUndefined()) {
-        if (!isTargetPropertyDescriptorDefined)
-            return false;
-        if (!targetPropertyDescriptor.configurable()) {
-            throwVMTypeError(exec, ASCIILiteral("When the result of 'getOwnPropertyDescriptor' is undefined the target must be configurable."));
-            return false;
-        }
-        // FIXME: this doesn't work if 'target' is another Proxy. We don't have isExtensible implemented in a way that fits w/ Proxys.
-        // https://bugs.webkit.org/show_bug.cgi?id=154375
-        if (!target->isExtensible()) {
-            // FIXME: Come up with a test for this error. I'm not sure how to because
-            // Object.seal(o) will make all fields [[Configurable]] false.
-            // https://bugs.webkit.org/show_bug.cgi?id=154376
-            throwVMTypeError(exec, ASCIILiteral("When 'getOwnPropertyDescriptor' returns undefined, the 'target' of a Proxy should be extensible."));
-            return false;
-        }
-
-        return false;
-    }
-
-    PropertyDescriptor trapResultAsDescriptor;
-    toPropertyDescriptor(exec, trapResult, trapResultAsDescriptor);
-    if (exec->hadException())
-        return false;
-    bool throwException = false;
-    bool valid = validateAndApplyPropertyDescriptor(exec, nullptr, propertyName, target->isExtensible(),
-        trapResultAsDescriptor, isTargetPropertyDescriptorDefined, targetPropertyDescriptor, throwException);
-    if (!valid) {
-        throwVMTypeError(exec, ASCIILiteral("Result from 'getOwnPropertyDescriptor' fails the IsCompatiblePropertyDescriptor test."));
-        return false;
-    }
-
-    if (!trapResultAsDescriptor.configurable()) {
-        if (!isTargetPropertyDescriptorDefined || targetPropertyDescriptor.configurable()) {
-            throwVMTypeError(exec, ASCIILiteral("Result from 'getOwnPropertyDescriptor' can't be non-configurable when the 'target' doesn't have it as an own property or if it is a configurable own property on 'target'."));
-            return false;
-        }
-    }
-
-    return true;
-}
-
-bool ProxyObject::performHasProperty(ExecState* exec, PropertyName propertyName, PropertySlot& slot)
-{
-    VM& vm = exec->vm();
-    slot.setValue(this, None, jsUndefined()); // Nobody should rely on our value, but be safe and protect against any bad actors reading our value.
-    
-    JSValue handlerValue = this->handler();
-    if (handlerValue.isNull()) {
-        throwVMTypeError(exec, ASCIILiteral("Proxy 'handler' is null. It should be an Object."));
-        return false;
-    }
-
-    JSObject* handler = jsCast<JSObject*>(handlerValue);
-    CallData callData;
-    CallType callType;
-    JSValue hasMethod = handler->getMethod(exec, callData, callType, vm.propertyNames->has, ASCIILiteral("'has' property of a Proxy's handler should be callable."));
-    if (exec->hadException())
-        return false;
-    JSObject* target = this->target();
-    if (hasMethod.isUndefined())
-        return target->methodTable(vm)->getOwnPropertySlot(target, exec, propertyName, slot);
-
-    MarkedArgumentBuffer arguments;
-    arguments.append(target);
-    arguments.append(identifierToSafePublicJSValue(vm, Identifier::fromUid(&vm, propertyName.uid())));
-    if (exec->hadException())
-        return false;
-    JSValue trapResult = call(exec, hasMethod, callType, callData, handler, arguments);
-    if (exec->hadException())
-        return false;
-
-    bool trapResultAsBool = trapResult.toBoolean(exec);
-    if (exec->hadException())
-        return false;
-
-    if (!trapResultAsBool) {
-        PropertyDescriptor descriptor;
-        bool isPropertyDescriptorDefined = target->getOwnPropertyDescriptor(exec, propertyName, descriptor); 
-        if (exec->hadException())
-            return false;
-        if (isPropertyDescriptorDefined) {
-            if (!descriptor.configurable()) {
-                throwVMTypeError(exec, ASCIILiteral("Proxy 'has' must return 'true' for non-configurable properties."));
-                return false;
-            }
-            if (!target->isExtensible()) {
-                throwVMTypeError(exec, ASCIILiteral("Proxy 'has' must return 'true' for a non-extensible 'target' object with a configurable property."));
-                return false;
-            }
-        }
-    }
-
-    return trapResultAsBool;
-}
-
-bool ProxyObject::getOwnPropertySlotCommon(ExecState* exec, PropertyName propertyName, PropertySlot& slot)
-{
-    slot.disableCaching();
-    switch (slot.internalMethodType()) {
-    case PropertySlot::InternalMethodType::Get:
-        slot.setCustom(this, CustomAccessor, performProxyGet);
-        return true;
-    case PropertySlot::InternalMethodType::GetOwnProperty:
-        return performInternalMethodGetOwnProperty(exec, propertyName, slot);
-    case PropertySlot::InternalMethodType::HasProperty:
-        return performHasProperty(exec, propertyName, slot);
-    default:
-        return false;
-    }
-
-    RELEASE_ASSERT_NOT_REACHED();
-    return false;
-}
-
-bool ProxyObject::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
-{
-    ProxyObject* thisObject = jsCast<ProxyObject*>(object);
-    return thisObject->getOwnPropertySlotCommon(exec, propertyName, slot);
-}
-
-bool ProxyObject::getOwnPropertySlotByIndex(JSObject* object, ExecState* exec, unsigned propertyName, PropertySlot& slot)
-{
-    ProxyObject* thisObject = jsCast<ProxyObject*>(object);
-    Identifier ident = Identifier::from(exec, propertyName); 
-    if (exec->hadException())
-        return false;
-    return thisObject->getOwnPropertySlotCommon(exec, ident.impl(), slot);
-}
-
-void ProxyObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
-{
-    ProxyObject* thisObject = jsCast<ProxyObject*>(cell);
-    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
-    Base::visitChildren(thisObject, visitor);
-
-    visitor.append(&thisObject->m_target);
-    visitor.append(&thisObject->m_handler);
-}
-
-} // namespace JSC