author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 17 Sep 2010 09:02:29 +0300 | |
changeset 0 | 4f2f89ce4247 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (C) 1999-2000 Harri Porten (porten@kde.org) |
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* Copyright (C) 2003, 2007, 2008 Apple Inc. All rights reserved. |
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* Copyright (C) 2003 Peter Kelly (pmk@post.com) |
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* Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com) |
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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 |
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* USA |
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* |
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*/ |
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#include "config.h" |
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#include "ArrayConstructor.h" |
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#include "ArrayPrototype.h" |
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#include "Error.h" |
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#include "ExceptionHelpers.h" |
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#include "JSArray.h" |
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#include "JSFunction.h" |
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#include "Lookup.h" |
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#include "PrototypeFunction.h" |
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namespace JSC { |
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ASSERT_CLASS_FITS_IN_CELL(ArrayConstructor); |
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static EncodedJSValue JSC_HOST_CALL arrayConstructorIsArray(ExecState*); |
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ArrayConstructor::ArrayConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, ArrayPrototype* arrayPrototype, Structure* prototypeFunctionStructure) |
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: InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, arrayPrototype->classInfo()->className)) |
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{ |
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// ECMA 15.4.3.1 Array.prototype |
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putDirectWithoutTransition(exec->propertyNames().prototype, arrayPrototype, DontEnum | DontDelete | ReadOnly); |
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// no. of arguments for constructor |
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putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete); |
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// ES5 |
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putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 1, exec->propertyNames().isArray, arrayConstructorIsArray), DontEnum); |
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} |
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static inline JSObject* constructArrayWithSizeQuirk(ExecState* exec, const ArgList& args) |
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{ |
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// a single numeric argument denotes the array size (!) |
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if (args.size() == 1 && args.at(0).isNumber()) { |
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uint32_t n = args.at(0).toUInt32(exec); |
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if (n != args.at(0).toNumber(exec)) |
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return throwError(exec, createRangeError(exec, "Array size is not a small enough positive integer.")); |
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return new (exec) JSArray(exec->lexicalGlobalObject()->arrayStructure(), n, CreateInitialized); |
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} |
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// otherwise the array is constructed with the arguments in it |
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return new (exec) JSArray(exec->lexicalGlobalObject()->arrayStructure(), args); |
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} |
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static EncodedJSValue JSC_HOST_CALL constructWithArrayConstructor(ExecState* exec) |
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{ |
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ArgList args(exec); |
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return JSValue::encode(constructArrayWithSizeQuirk(exec, args)); |
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} |
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// ECMA 15.4.2 |
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ConstructType ArrayConstructor::getConstructData(ConstructData& constructData) |
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{ |
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constructData.native.function = constructWithArrayConstructor; |
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return ConstructTypeHost; |
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} |
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static EncodedJSValue JSC_HOST_CALL callArrayConstructor(ExecState* exec) |
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{ |
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ArgList args(exec); |
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return JSValue::encode(constructArrayWithSizeQuirk(exec, args)); |
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} |
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// ECMA 15.6.1 |
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CallType ArrayConstructor::getCallData(CallData& callData) |
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{ |
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// equivalent to 'new Array(....)' |
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callData.native.function = callArrayConstructor; |
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return CallTypeHost; |
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} |
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EncodedJSValue JSC_HOST_CALL arrayConstructorIsArray(ExecState* exec) |
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{ |
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return JSValue::encode(jsBoolean(exec->argument(0).inherits(&JSArray::info))); |
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} |
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} // namespace JSC |