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