| /* |
| * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) |
| * Copyright (C) 2008, 2011 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #include "config.h" |
| #include "ObjectPrototype.h" |
| |
| #include "Error.h" |
| #include "JSFunction.h" |
| #include "JSString.h" |
| #include "JSStringBuilder.h" |
| #include "Operations.h" |
| #include "StructureRareDataInlines.h" |
| |
| namespace JSC { |
| |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncValueOf(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncHasOwnProperty(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncIsPrototypeOf(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineGetter(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineSetter(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupGetter(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupSetter(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncPropertyIsEnumerable(ExecState*); |
| static EncodedJSValue JSC_HOST_CALL objectProtoFuncToLocaleString(ExecState*); |
| |
| ASSERT_HAS_TRIVIAL_DESTRUCTOR(ObjectPrototype); |
| |
| const ClassInfo ObjectPrototype::s_info = { "Object", &JSNonFinalObject::s_info, 0, 0, CREATE_METHOD_TABLE(ObjectPrototype) }; |
| |
| ObjectPrototype::ObjectPrototype(ExecState* exec, Structure* stucture) |
| : JSNonFinalObject(exec->globalData(), stucture) |
| { |
| } |
| |
| void ObjectPrototype::finishCreation(ExecState* exec, JSGlobalObject* globalObject) |
| { |
| JSGlobalData& globalData = exec->globalData(); |
| |
| Base::finishCreation(globalData); |
| ASSERT(inherits(&s_info)); |
| globalData.prototypeMap.addPrototype(this); |
| |
| JSC_NATIVE_FUNCTION("toString", objectProtoFuncToString, DontEnum, 0); |
| JSC_NATIVE_FUNCTION("toLocaleString", objectProtoFuncToLocaleString, DontEnum, 0); |
| JSC_NATIVE_FUNCTION("valueOf", objectProtoFuncValueOf, DontEnum, 0); |
| JSC_NATIVE_FUNCTION("hasOwnProperty", objectProtoFuncHasOwnProperty, DontEnum, 1); |
| JSC_NATIVE_FUNCTION("propertyIsEnumerable", objectProtoFuncPropertyIsEnumerable, DontEnum, 1); |
| JSC_NATIVE_FUNCTION("isPrototypeOf", objectProtoFuncIsPrototypeOf, DontEnum, 1); |
| JSC_NATIVE_FUNCTION("__defineGetter__", objectProtoFuncDefineGetter, DontEnum, 2); |
| JSC_NATIVE_FUNCTION("__defineSetter__", objectProtoFuncDefineSetter, DontEnum, 2); |
| JSC_NATIVE_FUNCTION("__lookupGetter__", objectProtoFuncLookupGetter, DontEnum, 1); |
| JSC_NATIVE_FUNCTION("__lookupSetter__", objectProtoFuncLookupSetter, DontEnum, 1); |
| } |
| |
| ObjectPrototype* ObjectPrototype::create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure) |
| { |
| ObjectPrototype* prototype = new (NotNull, allocateCell<ObjectPrototype>(*exec->heap())) ObjectPrototype(exec, structure); |
| prototype->finishCreation(exec, globalObject); |
| return prototype; |
| } |
| |
| // ------------------------------ Functions -------------------------------- |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncValueOf(ExecState* exec) |
| { |
| JSValue thisValue = exec->hostThisValue(); |
| return JSValue::encode(thisValue.toObject(exec)); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncHasOwnProperty(ExecState* exec) |
| { |
| JSValue thisValue = exec->hostThisValue(); |
| return JSValue::encode(jsBoolean(thisValue.toObject(exec)->hasOwnProperty(exec, Identifier(exec, exec->argument(0).toString(exec)->value(exec))))); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncIsPrototypeOf(ExecState* exec) |
| { |
| JSValue thisValue = exec->hostThisValue(); |
| JSObject* thisObj = thisValue.toObject(exec); |
| |
| if (!exec->argument(0).isObject()) |
| return JSValue::encode(jsBoolean(false)); |
| |
| JSValue v = asObject(exec->argument(0))->prototype(); |
| |
| while (true) { |
| if (!v.isObject()) |
| return JSValue::encode(jsBoolean(false)); |
| if (v == thisObj) |
| return JSValue::encode(jsBoolean(true)); |
| v = asObject(v)->prototype(); |
| } |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineGetter(ExecState* exec) |
| { |
| JSObject* thisObject = exec->hostThisValue().toObject(exec); |
| if (exec->hadException()) |
| return JSValue::encode(jsUndefined()); |
| |
| JSValue get = exec->argument(1); |
| CallData callData; |
| if (getCallData(get, callData) == CallTypeNone) |
| return throwVMError(exec, createTypeError(exec, ASCIILiteral("invalid getter usage"))); |
| |
| PropertyDescriptor descriptor; |
| descriptor.setGetter(get); |
| descriptor.setEnumerable(true); |
| descriptor.setConfigurable(true); |
| thisObject->methodTable()->defineOwnProperty(thisObject, exec, Identifier(exec, exec->argument(0).toString(exec)->value(exec)), descriptor, false); |
| |
| return JSValue::encode(jsUndefined()); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncDefineSetter(ExecState* exec) |
| { |
| JSObject* thisObject = exec->hostThisValue().toObject(exec); |
| if (exec->hadException()) |
| return JSValue::encode(jsUndefined()); |
| |
| JSValue set = exec->argument(1); |
| CallData callData; |
| if (getCallData(set, callData) == CallTypeNone) |
| return throwVMError(exec, createTypeError(exec, ASCIILiteral("invalid setter usage"))); |
| |
| PropertyDescriptor descriptor; |
| descriptor.setSetter(set); |
| descriptor.setEnumerable(true); |
| descriptor.setConfigurable(true); |
| thisObject->methodTable()->defineOwnProperty(thisObject, exec, Identifier(exec, exec->argument(0).toString(exec)->value(exec)), descriptor, false); |
| |
| return JSValue::encode(jsUndefined()); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupGetter(ExecState* exec) |
| { |
| JSObject* thisObject = exec->hostThisValue().toObject(exec); |
| if (exec->hadException()) |
| return JSValue::encode(jsUndefined()); |
| |
| PropertyDescriptor descriptor; |
| if (thisObject->getPropertyDescriptor(exec, Identifier(exec, exec->argument(0).toString(exec)->value(exec)), descriptor) |
| && descriptor.getterPresent()) |
| return JSValue::encode(descriptor.getter()); |
| |
| return JSValue::encode(jsUndefined()); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncLookupSetter(ExecState* exec) |
| { |
| JSObject* thisObject = exec->hostThisValue().toObject(exec); |
| if (exec->hadException()) |
| return JSValue::encode(jsUndefined()); |
| |
| PropertyDescriptor descriptor; |
| if (thisObject->getPropertyDescriptor(exec, Identifier(exec, exec->argument(0).toString(exec)->value(exec)), descriptor) |
| && descriptor.setterPresent()) |
| return JSValue::encode(descriptor.setter()); |
| |
| return JSValue::encode(jsUndefined()); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncPropertyIsEnumerable(ExecState* exec) |
| { |
| JSValue thisValue = exec->hostThisValue(); |
| return JSValue::encode(jsBoolean(thisValue.toObject(exec)->propertyIsEnumerable(exec, Identifier(exec, exec->argument(0).toString(exec)->value(exec))))); |
| } |
| |
| // 15.2.4.3 Object.prototype.toLocaleString() |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncToLocaleString(ExecState* exec) |
| { |
| // 1. Let O be the result of calling ToObject passing the this value as the argument. |
| JSObject* object = exec->hostThisValue().toObject(exec); |
| if (exec->hadException()) |
| return JSValue::encode(jsUndefined()); |
| |
| // 2. Let toString be the result of calling the [[Get]] internal method of O passing "toString" as the argument. |
| JSValue toString = object->get(exec, exec->propertyNames().toString); |
| |
| // 3. If IsCallable(toString) is false, throw a TypeError exception. |
| CallData callData; |
| CallType callType = getCallData(toString, callData); |
| if (callType == CallTypeNone) |
| return JSValue::encode(jsUndefined()); |
| |
| // 4. Return the result of calling the [[Call]] internal method of toString passing O as the this value and no arguments. |
| return JSValue::encode(call(exec, toString, callType, callData, object, exec->emptyList())); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL objectProtoFuncToString(ExecState* exec) |
| { |
| JSValue thisValue = exec->hostThisValue(); |
| if (thisValue.isUndefinedOrNull()) |
| return JSValue::encode(jsNontrivialString(exec, String(thisValue.isUndefined() ? ASCIILiteral("[object Undefined]") : ASCIILiteral("[object Null]")))); |
| JSObject* thisObject = thisValue.toObject(exec); |
| |
| JSString* result = thisObject->structure()->objectToStringValue(); |
| if (!result) { |
| RefPtr<StringImpl> newString = WTF::tryMakeString("[object ", thisObject->methodTable()->className(thisObject), "]"); |
| if (!newString) |
| return JSValue::encode(throwOutOfMemoryError(exec)); |
| |
| result = jsNontrivialString(exec, newString.release()); |
| thisObject->structure()->setObjectToStringValue(exec->globalData(), thisObject, result); |
| } |
| return JSValue::encode(result); |
| } |
| |
| } // namespace JSC |