/*

 *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)

 *  Copyright (C) 2003, 2007, 2008 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 "RegExpObject.h"

#include "Error.h"

#include "ExceptionHelpers.h"

#include "JSArray.h"

#include "JSGlobalObject.h"

#include "JSString.h"

#include "Lookup.h"

#include "RegExpConstructor.h"

#include "RegExpPrototype.h"

#include <wtf/PassOwnPtr.h>

namespace JSC {

static JSValue regExpObjectGlobal(ExecState*, JSValue, const Identifier&);

static JSValue regExpObjectIgnoreCase(ExecState*, JSValue, const Identifier&);

static JSValue regExpObjectMultiline(ExecState*, JSValue, const Identifier&);

static JSValue regExpObjectSource(ExecState*, JSValue, const Identifier&);

static JSValue regExpObjectLastIndex(ExecState*, JSValue, const Identifier&);

static void setRegExpObjectLastIndex(ExecState*, JSObject*, JSValue);

} // namespace JSC

#include "RegExpObject.lut.h"

namespace JSC {

ASSERT_CLASS_FITS_IN_CELL(RegExpObject);

const ClassInfo RegExpObject::info = { "RegExp", 0, 0, ExecState::regExpTable };

/* Source for RegExpObject.lut.h

@begin regExpTable

    global        regExpObjectGlobal       DontDelete|ReadOnly|DontEnum

    ignoreCase    regExpObjectIgnoreCase   DontDelete|ReadOnly|DontEnum

    multiline     regExpObjectMultiline    DontDelete|ReadOnly|DontEnum

    source        regExpObjectSource       DontDelete|ReadOnly|DontEnum

    lastIndex     regExpObjectLastIndex    DontDelete|DontEnum

@end

*/

RegExpObject::RegExpObject(JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, NonNullPassRefPtr<RegExp> regExp)

    : JSObjectWithGlobalObject(globalObject, structure)

    , d(adoptPtr(new RegExpObjectData(regExp, 0)))

{

}

RegExpObject::~RegExpObject()

{

}

bool RegExpObject::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)

{

    return getStaticValueSlot<RegExpObject, JSObject>(exec, ExecState::regExpTable(exec), this, propertyName, slot);

}

bool RegExpObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)

{

    return getStaticValueDescriptor<RegExpObject, JSObject>(exec, ExecState::regExpTable(exec), this, propertyName, descriptor);

}

JSValue regExpObjectGlobal(ExecState*, JSValue slotBase, const Identifier&)

{

    return jsBoolean(asRegExpObject(slotBase)->regExp()->global());

}

JSValue regExpObjectIgnoreCase(ExecState*, JSValue slotBase, const Identifier&)

{

    return jsBoolean(asRegExpObject(slotBase)->regExp()->ignoreCase());

}

JSValue regExpObjectMultiline(ExecState*, JSValue slotBase, const Identifier&)

{            

    return jsBoolean(asRegExpObject(slotBase)->regExp()->multiline());

}

JSValue regExpObjectSource(ExecState* exec, JSValue slotBase, const Identifier&)

{

    return jsString(exec, asRegExpObject(slotBase)->regExp()->pattern());

}

JSValue regExpObjectLastIndex(ExecState* exec, JSValue slotBase, const Identifier&)

{

    return jsNumber(exec, asRegExpObject(slotBase)->lastIndex());

}

void RegExpObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)

{

    lookupPut<RegExpObject, JSObject>(exec, propertyName, value, ExecState::regExpTable(exec), this, slot);

}

void setRegExpObjectLastIndex(ExecState* exec, JSObject* baseObject, JSValue value)

{

    asRegExpObject(baseObject)->setLastIndex(value.toInteger(exec));

}

JSValue RegExpObject::test(ExecState* exec)

{

    return jsBoolean(match(exec));

}

JSValue RegExpObject::exec(ExecState* exec)

{

    if (match(exec))

        return exec->lexicalGlobalObject()->regExpConstructor()->arrayOfMatches(exec);

    return jsNull();

}

static EncodedJSValue JSC_HOST_CALL callRegExpObject(ExecState* exec)

{

    return JSValue::encode(asRegExpObject(exec->callee())->exec(exec));

}

CallType RegExpObject::getCallData(CallData& callData)

{

    callData.native.function = callRegExpObject;

    return CallTypeHost;

}

// Shared implementation used by test and exec.

bool RegExpObject::match(ExecState* exec)

{

    RegExpConstructor* regExpConstructor = exec->lexicalGlobalObject()->regExpConstructor();

    UString input = !exec->argumentCount() ? regExpConstructor->input() : exec->argument(0).toString(exec);

    if (input.isNull()) {

        throwError(exec, createError(exec, makeString("No input to ", toString(exec), ".")));

        return false;

    }

    if (!regExp()->global()) {

        int position;

        int length;

        regExpConstructor->performMatch(d->regExp.get(), input, 0, position, length);

        return position >= 0;

    }

    if (d->lastIndex < 0 || d->lastIndex > input.size()) {

        d->lastIndex = 0;

        return false;

    }

    int position;

    int length = 0;

    regExpConstructor->performMatch(d->regExp.get(), input, static_cast<int>(d->lastIndex), position, length);

    if (position < 0) {

        d->lastIndex = 0;

        return false;

    }

    d->lastIndex = position + length;

    return true;

}

} // namespace JSC