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/*
* 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 "ExceptionHelpers.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "Lookup.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(ArrayConstructor);
static EncodedJSValue JSC_HOST_CALL arrayConstructorIsArray(ExecState*);
ArrayConstructor::ArrayConstructor(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, ArrayPrototype* arrayPrototype, Structure* functionStructure)
: InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, arrayPrototype->classInfo()->className))
{
// ECMA 15.4.3.1 Array.prototype
putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, arrayPrototype, DontEnum | DontDelete | ReadOnly);
// no. of arguments for constructor
putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(1), ReadOnly | DontEnum | DontDelete);
// ES5
putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 1, exec->propertyNames().isArray, arrayConstructorIsArray), DontEnum);
}
static inline JSObject* constructArrayWithSizeQuirk(ExecState* exec, const ArgList& args)
{
JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
// 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, createRangeError(exec, "Array size is not a small enough positive integer."));
return new (exec) JSArray(exec->globalData(), globalObject->arrayStructure(), n, CreateInitialized);
}
// otherwise the array is constructed with the arguments in it
return new (exec) JSArray(exec->globalData(), globalObject->arrayStructure(), args);
}
static EncodedJSValue JSC_HOST_CALL constructWithArrayConstructor(ExecState* exec)
{
ArgList args(exec);
return JSValue::encode(constructArrayWithSizeQuirk(exec, args));
}
// ECMA 15.4.2
ConstructType ArrayConstructor::getConstructData(ConstructData& constructData)
{
constructData.native.function = constructWithArrayConstructor;
return ConstructTypeHost;
}
static EncodedJSValue JSC_HOST_CALL callArrayConstructor(ExecState* exec)
{
ArgList args(exec);
return JSValue::encode(constructArrayWithSizeQuirk(exec, args));
}
// ECMA 15.6.1
CallType ArrayConstructor::getCallData(CallData& callData)
{
// equivalent to 'new Array(....)'
callData.native.function = callArrayConstructor;
return CallTypeHost;
}
EncodedJSValue JSC_HOST_CALL arrayConstructorIsArray(ExecState* exec)
{
return JSValue::encode(jsBoolean(exec->argument(0).inherits(&JSArray::s_info)));
}
} // namespace JSC
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