mirror of
https://bitbucket.org/smil3y/kdelibs.git
synced 2025-02-23 18:32:49 +00:00
466 lines
19 KiB
C++
466 lines
19 KiB
C++
// -*- c-basic-offset: 2 -*-
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// krazy:excludeall=doublequote_chars (UStrings aren't QStrings)
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/*
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* This file is part of the KDE libraries
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* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "object_object.h"
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#include <config-kjs.h>
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#include "operations.h"
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#include "function_object.h"
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#include "propertydescriptor.h"
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#include <stdio.h>
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namespace KJS {
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/**
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* @internal
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*
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* Class to implement all methods that are properties of the
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* Object object
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*/
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class ObjectObjectFuncImp : public InternalFunctionImp {
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public:
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ObjectObjectFuncImp(ExecState *, FunctionPrototype *, int i, int len, const Identifier& );
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virtual JSValue *callAsFunction(ExecState *, JSObject *thisObj, const List &args);
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enum { GetOwnPropertyDescriptor, DefineProperty, GetPrototypeOf,
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GetOwnPropertyNames, Keys, DefineProperties, Create, IsExtensible,
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PreventExtensible, IsSealed, Seal, IsFrozen, Freeze,
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//ES6
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Is
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};
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private:
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int id;
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};
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// ------------------------------ ObjectPrototype --------------------------------
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ObjectPrototype::ObjectPrototype(ExecState* exec, FunctionPrototype* funcProto)
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: JSObject() // [[Prototype]] is null
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{
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static const Identifier* hasOwnPropertyPropertyName = new Identifier("hasOwnProperty");
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static const Identifier* propertyIsEnumerablePropertyName = new Identifier("propertyIsEnumerable");
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static const Identifier* isPrototypeOfPropertyName = new Identifier("isPrototypeOf");
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static const Identifier* defineGetterPropertyName = new Identifier("__defineGetter__");
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static const Identifier* defineSetterPropertyName = new Identifier("__defineSetter__");
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static const Identifier* lookupGetterPropertyName = new Identifier("__lookupGetter__");
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static const Identifier* lookupSetterPropertyName = new Identifier("__lookupSetter__");
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::ToString, 0, exec->propertyNames().toString), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::ToLocaleString, 0, exec->propertyNames().toLocaleString), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::ValueOf, 0, exec->propertyNames().valueOf), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::HasOwnProperty, 1, *hasOwnPropertyPropertyName), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::PropertyIsEnumerable, 1, *propertyIsEnumerablePropertyName), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::IsPrototypeOf, 1, *isPrototypeOfPropertyName), DontEnum);
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// Mozilla extensions
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::DefineGetter, 2, *defineGetterPropertyName), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::DefineSetter, 2, *defineSetterPropertyName), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::LookupGetter, 1, *lookupGetterPropertyName), DontEnum);
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putDirectFunction(new ObjectProtoFunc(exec, funcProto, ObjectProtoFunc::LookupSetter, 1, *lookupSetterPropertyName), DontEnum);
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}
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JSObject* ObjectPrototype::self(ExecState* exec)
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{
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return exec->lexicalInterpreter()->builtinObjectPrototype();
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}
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// ------------------------------ ObjectProtoFunc --------------------------------
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ObjectProtoFunc::ObjectProtoFunc(ExecState* exec, FunctionPrototype* funcProto, int i, int len, const Identifier& name)
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: InternalFunctionImp(funcProto, name)
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, id(i)
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{
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putDirect(exec->propertyNames().length, len, DontDelete|ReadOnly|DontEnum);
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}
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// ECMA 15.2.4.2, 15.2.4.4, 15.2.4.5, 15.2.4.7
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JSValue *ObjectProtoFunc::callAsFunction(ExecState *exec, JSObject *thisObj, const List &args)
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{
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switch (id) {
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case ValueOf:
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return thisObj;
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case HasOwnProperty: {
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PropertySlot slot;
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return jsBoolean(thisObj->getOwnPropertySlot(exec, Identifier(args[0]->toString(exec)), slot));
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}
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case IsPrototypeOf: {
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if (!args[0]->isObject())
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return jsBoolean(false);
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JSValue *v = static_cast<JSObject *>(args[0])->prototype();
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while (true) {
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if (!v->isObject())
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return jsBoolean(false);
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if (thisObj == static_cast<JSObject *>(v))
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return jsBoolean(true);
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v = static_cast<JSObject *>(v)->prototype();
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}
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}
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case DefineGetter:
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case DefineSetter: {
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if (!args[1]->isObject() ||
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!static_cast<JSObject *>(args[1])->implementsCall()) {
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if (id == DefineGetter)
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return throwError(exec, SyntaxError, "invalid getter usage");
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else
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return throwError(exec, SyntaxError, "invalid setter usage");
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}
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if (id == DefineGetter)
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thisObj->defineGetter(exec, Identifier(args[0]->toString(exec)), static_cast<JSObject *>(args[1]));
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else
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thisObj->defineSetter(exec, Identifier(args[0]->toString(exec)), static_cast<JSObject *>(args[1]));
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return jsUndefined();
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}
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case LookupGetter:
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case LookupSetter: {
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Identifier propertyName = Identifier(args[0]->toString(exec));
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JSObject *obj = thisObj;
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while (true) {
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JSValue *v = obj->getDirect(propertyName);
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if (v) {
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if (v->type() != GetterSetterType)
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return jsUndefined();
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JSObject *funcObj;
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if (id == LookupGetter)
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funcObj = static_cast<GetterSetterImp *>(v)->getGetter();
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else
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funcObj = static_cast<GetterSetterImp *>(v)->getSetter();
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if (!funcObj)
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return jsUndefined();
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else
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return funcObj;
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}
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if (!obj->prototype() || !obj->prototype()->isObject())
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return jsUndefined();
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obj = static_cast<JSObject *>(obj->prototype());
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}
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}
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case PropertyIsEnumerable:
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return jsBoolean(thisObj->propertyIsEnumerable(exec, Identifier(args[0]->toString(exec))));
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case ToLocaleString:
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return jsString(thisObj->toString(exec));
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case ToString:
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default:
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return jsString("[object " + thisObj->className() + "]");
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}
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}
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// ------------------------------ ObjectObjectImp --------------------------------
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ObjectObjectImp::ObjectObjectImp(ExecState* exec, ObjectPrototype* objProto, FunctionPrototype* funcProto)
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: InternalFunctionImp(funcProto)
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{
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static const Identifier* getOwnPropertyDescriptorName = new Identifier("getOwnPropertyDescriptor");
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static const Identifier* createName = new Identifier("create");
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static const Identifier* definePropertyName = new Identifier("defineProperty");
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static const Identifier* definePropertiesName = new Identifier("defineProperties");
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static const Identifier* getPrototypeOf = new Identifier("getPrototypeOf");
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static const Identifier* getOwnPropertyNames = new Identifier("getOwnPropertyNames");
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static const Identifier* sealName = new Identifier("seal");
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static const Identifier* freezeName = new Identifier("freeze");
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static const Identifier* preventExtensionsName = new Identifier("preventExtensions");
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static const Identifier* isSealedName = new Identifier("isSealed");
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static const Identifier* isFrozenName = new Identifier("isFrozen");
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static const Identifier* isExtensibleName = new Identifier("isExtensible");
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static const Identifier* keys = new Identifier("keys");
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static const Identifier* isName = new Identifier("is");
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// ECMA 15.2.3.1
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putDirect(exec->propertyNames().prototype, objProto, DontEnum|DontDelete|ReadOnly);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::GetOwnPropertyDescriptor, 2, *getOwnPropertyDescriptorName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::Create, 2, *createName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::DefineProperty, 3, *definePropertyName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::DefineProperties, 2, *definePropertiesName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::GetPrototypeOf, 1, *getPrototypeOf), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::GetOwnPropertyNames, 1, *getOwnPropertyNames), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::Seal, 1, *sealName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::Freeze, 1, *freezeName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::PreventExtensible, 1, *preventExtensionsName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::IsSealed, 1, *isSealedName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::IsFrozen, 1, *isFrozenName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::IsExtensible, 1, *isExtensibleName), DontEnum);
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::Keys, 1, *keys), DontEnum);
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//ES6
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putDirectFunction(new ObjectObjectFuncImp(exec, funcProto, ObjectObjectFuncImp::Is, 2, *isName), DontEnum);
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// no. of arguments for constructor
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putDirect(exec->propertyNames().length, jsNumber(1), ReadOnly|DontDelete|DontEnum);
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}
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bool ObjectObjectImp::implementsConstruct() const
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{
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return true;
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}
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// ECMA 15.2.2
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JSObject* ObjectObjectImp::construct(ExecState* exec, const List& args)
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{
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JSValue* arg = args[0];
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switch (arg->type()) {
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case StringType:
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case BooleanType:
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case NumberType:
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case ObjectType:
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return arg->toObject(exec);
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case NullType:
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case UndefinedType:
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return new JSObject(exec->lexicalInterpreter()->builtinObjectPrototype());
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default:
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//### ASSERT_NOT_REACHED();
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return 0;
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}
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}
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JSValue* ObjectObjectImp::callAsFunction(ExecState* exec, JSObject* /*thisObj*/, const List &args)
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{
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return construct(exec, args);
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}
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// ------------------------------ ObjectObjectFuncImp ----------------------------
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ObjectObjectFuncImp::ObjectObjectFuncImp(ExecState* exec, FunctionPrototype* funcProto, int i, int len, const Identifier& name)
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: InternalFunctionImp(funcProto, name), id(i)
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{
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putDirect(exec->propertyNames().length, len, DontDelete|ReadOnly|DontEnum);
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}
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static JSValue* defineProperties(ExecState* exec, JSObject* object, JSValue* properties)
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{
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JSObject* props = properties->toObject(exec);
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if (exec->hadException())
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return object;
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PropertyNameArray names;
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props->getOwnPropertyNames(exec, names, PropertyMap::ExcludeDontEnumProperties);
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int size = names.size();
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Vector<PropertyDescriptor> descriptors;
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for (int i = 0; i < size; ++i) {
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PropertyDescriptor desc;
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if (!desc.setPropertyDescriptorFromObject(exec, props->get(exec, names[i])))
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return jsUndefined();
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descriptors.append(desc);
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}
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for (int i = 0; i < size; ++i) {
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object->defineOwnProperty(exec, names[i], descriptors[i], true);
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if (exec->hadException())
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return jsUndefined();
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}
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return object;
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}
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JSValue *ObjectObjectFuncImp::callAsFunction(ExecState* exec, JSObject*, const List& args)
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{
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switch (id) {
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case GetPrototypeOf: { //ECMA Edition 5.1r6 - 15.2.3.2
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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return jso->prototype();
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}
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case GetOwnPropertyDescriptor: { //ECMA Edition 5.1r6 - 15.2.3.3
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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UString name = args[1]->toString(exec);
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PropertyDescriptor desc;
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if (!jso->getOwnPropertyDescriptor(exec, Identifier(name), desc))
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return jsUndefined();
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return desc.fromPropertyDescriptor(exec);
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}
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case GetOwnPropertyNames: //ECMA Edition 5.1r6 - 15.2.3.4
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case Keys: { //ECMA Edition 5.1r6 - 15.2.3.14
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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JSObject *ret = static_cast<JSObject *>(exec->lexicalInterpreter()->builtinArray()->construct(exec, List::empty()));
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PropertyNameArray propertyNames;
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if (id == Keys)
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jso->getOwnPropertyNames(exec, propertyNames, PropertyMap::ExcludeDontEnumProperties);
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else // id == GetOwnPropertyNames
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jso->getOwnPropertyNames(exec, propertyNames, PropertyMap::IncludeDontEnumProperties);
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PropertyNameArrayIterator propEnd = propertyNames.end();
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unsigned int n = 0;
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for (PropertyNameArrayIterator propIter = propertyNames.begin(); propIter != propEnd; ++propIter) {
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Identifier name = *propIter;
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ret->put(exec, n, jsString(name.ustring()), None);
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++n;
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}
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ret->put(exec, exec->propertyNames().length, jsNumber(n), DontEnum | DontDelete);
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return ret;
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}
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case Create: { //ECMA Edition 5.1r6 - 15.2.3.5
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JSObject *proto = args[0]->getObject();
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if (!proto && !args[0]->isNull())
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return throwError(exec, TypeError, "Not an Object");
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JSObject *ret = static_cast<JSObject *>(exec->lexicalInterpreter()->builtinObject()->construct(exec, List::empty()));
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if (proto)
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ret->setPrototype(proto);
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else
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ret->setPrototype(jsNull());
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if (args.size() >= 2 && !args[1]->isUndefined())
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return defineProperties(exec, ret, args[1]);
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return ret;
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}
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case DefineProperty: { //ECMA Edition 5.1r6 - 15.2.3.6
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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UString name = args[1]->toString(exec);
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PropertyDescriptor desc;
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if (!desc.setPropertyDescriptorFromObject(exec, args[2]))
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return jsUndefined();
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if (!jso->defineOwnProperty(exec, Identifier(name), desc, true))
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return jsUndefined();
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return jso;
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}
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case DefineProperties: { //ECMA Edition 5.1r6 - 15.2.3.7
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if (!args[0]->isObject())
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return throwError(exec, TypeError, "Not an Object");
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JSObject* jso = args[0]->getObject();
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return defineProperties(exec, jso, args[1]);
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}
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case Seal: { //ECMA Edition 5.1r6 - 15.2.3.8
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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PropertyNameArray names;
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jso->getOwnPropertyNames(exec, names, PropertyMap::IncludeDontEnumProperties);
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int size = names.size();
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PropertyDescriptor desc;
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for (int i = 0; i < size; ++i) {
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jso->getOwnPropertyDescriptor(exec, names[i], desc);
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if (desc.configurable()) {
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desc.setConfigureable(false);
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if (!jso->defineOwnProperty(exec, names[i], desc, true))
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return jsUndefined();
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}
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}
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jso->preventExtensions();
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return jso;
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}
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case Freeze: { //ECMA Edition 5.1r6 - 15.2.3.9
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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PropertyNameArray names;
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jso->getOwnPropertyNames(exec, names, PropertyMap::IncludeDontEnumProperties);
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int size = names.size();
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PropertyDescriptor desc;
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for (int i = 0; i < size; ++i) {
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jso->getOwnPropertyDescriptor(exec, names[i], desc);
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if (desc.isDataDescriptor())
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if (desc.writable())
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desc.setWritable(false);
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if (desc.configurable())
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desc.setConfigureable(false);
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if (!jso->defineOwnProperty(exec, names[i], desc, true))
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return jsUndefined();
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}
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jso->preventExtensions();
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return jso;
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}
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case PreventExtensible: { //ECMA Edition 5.1r6 - 15.2.3.10
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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jso->preventExtensions();
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return jso;
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}
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case IsSealed: { //ECMA Edition 5.1r6 - 15.2.3.11
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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PropertyNameArray names;
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jso->getOwnPropertyNames(exec, names, PropertyMap::IncludeDontEnumProperties);
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int size = names.size();
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PropertyDescriptor desc;
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for (int i = 0; i < size; ++i) {
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jso->getOwnPropertyDescriptor(exec, names[i], desc);
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if (desc.configurable())
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return jsBoolean(false);
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}
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return jsBoolean(!jso->isExtensible());
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}
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case IsFrozen: { //ECMA Edition 5.1r6 - 15.2.3.12
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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PropertyNameArray names;
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jso->getOwnPropertyNames(exec, names, PropertyMap::IncludeDontEnumProperties);
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int size = names.size();
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PropertyDescriptor desc;
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for (int i = 0; i < size; ++i) {
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jso->getOwnPropertyDescriptor(exec, names[i], desc);
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if (desc.isDataDescriptor())
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if (desc.writable())
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return jsBoolean(false);
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if (desc.configurable())
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return jsBoolean(false);
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}
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return jsBoolean(!jso->isExtensible());
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}
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case IsExtensible: { //ECMA Edition 5.1r6 - 15.2.3.13
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JSObject* jso = args[0]->getObject();
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if (!jso)
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return throwError(exec, TypeError, "Not an Object");
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return jsBoolean(jso->isExtensible());
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}
|
||
case Is: { //ES6 (Draft 08.11.2013) - 19.1.2.10
|
||
return jsBoolean(sameValue(exec, args[0], args[1]));
|
||
}
|
||
default:
|
||
return jsUndefined();
|
||
}
|
||
}
|
||
|
||
} // namespace KJS
|