/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "private/qdeclarativecompiler_p.h"
#include "qdeclarativeengine.h"
#include "qdeclarativecomponent.h"
#include "private/qdeclarativecomponent_p.h"
#include "qdeclarativecontext.h"
#include "private/qdeclarativecontext_p.h"

#include <QtCore/qdebug.h>

#include <private/qobject_p.h>

QT_BEGIN_NAMESPACE

int QDeclarativeCompiledData::pack(const char *data, size_t size)
{
    const char *p = packData.constData();
    unsigned int ps = packData.size();

    for (unsigned int ii = 0; (ii + size) <= ps; ii += sizeof(int)) {
        if (0 == ::memcmp(p + ii, data, size))
            return ii;
    }

    int rv = packData.size();
    packData.append(data, size);
    return rv;
}

int QDeclarativeCompiledData::indexForString(const QString &data)
{
    int idx = primitives.indexOf(data);
    if (idx == -1) {
        idx = primitives.count();
        primitives << data;
    }
    return idx;
}

int QDeclarativeCompiledData::indexForByteArray(const QByteArray &data)
{
    int idx = datas.indexOf(data);
    if (idx == -1) {
        idx = datas.count();
        datas << data;
    }
    return idx;
}

int QDeclarativeCompiledData::indexForUrl(const QUrl &data)
{
    int idx = urls.indexOf(data);
    if (idx == -1) {
        idx = urls.count();
        urls << data;
    }
    return idx;
}

int QDeclarativeCompiledData::indexForFloat(float *data, int count)
{
    Q_ASSERT(count > 0);

    for (int ii = 0; ii <= floatData.count() - count; ++ii) {
        bool found = true;
        for (int jj = 0; jj < count; ++jj) {
            if (floatData.at(ii + jj) != data[jj]) {
                found = false;
                break;
            }
        }

        if (found)
            return ii;
    }

    int idx = floatData.count();
    for (int ii = 0; ii < count; ++ii)
        floatData << data[ii];

    return idx;
}

int QDeclarativeCompiledData::indexForInt(int *data, int count)
{
    Q_ASSERT(count > 0);

    for (int ii = 0; ii <= intData.count() - count; ++ii) {
        bool found = true;
        for (int jj = 0; jj < count; ++jj) {
            if (intData.at(ii + jj) != data[jj]) {
                found = false;
                break;
            }
        }

        if (found)
            return ii;
    }

    int idx = intData.count();
    for (int ii = 0; ii < count; ++ii)
        intData << data[ii];

    return idx;
}

int QDeclarativeCompiledData::indexForLocation(const QDeclarativeParser::Location &l)
{
    // ### FIXME
    int rv = locations.count();
    locations << l;
    return rv;
}

int QDeclarativeCompiledData::indexForLocation(const QDeclarativeParser::LocationSpan &l)
{
    // ### FIXME
    int rv = locations.count();
    locations << l.start << l.end;
    return rv;
}

QDeclarativeCompiledData::QDeclarativeCompiledData(QDeclarativeEngine *engine)
: QDeclarativeCleanup(engine), importCache(0), root(0), rootPropertyCache(0)
{
}

QDeclarativeCompiledData::~QDeclarativeCompiledData()
{
    for (int ii = 0; ii < types.count(); ++ii) {
        if (types.at(ii).component)
            types.at(ii).component->release();
        if (types.at(ii).typePropertyCache)
            types.at(ii).typePropertyCache->release();
    }

    for (int ii = 0; ii < propertyCaches.count(); ++ii) 
        propertyCaches.at(ii)->release();

    for (int ii = 0; ii < contextCaches.count(); ++ii)
        contextCaches.at(ii)->release();

    if (importCache)
        importCache->release();

    if (rootPropertyCache)
        rootPropertyCache->release();

    qDeleteAll(cachedPrograms);
    qDeleteAll(cachedClosures);
}

void QDeclarativeCompiledData::clear()
{
    qDeleteAll(cachedPrograms);
    qDeleteAll(cachedClosures);
    for (int ii = 0; ii < cachedClosures.count(); ++ii)
        cachedClosures[ii] = 0;
    for (int ii = 0; ii < cachedPrograms.count(); ++ii)
        cachedPrograms[ii] = 0;
}

const QMetaObject *QDeclarativeCompiledData::TypeReference::metaObject() const
{
    if (type) {
        return type->metaObject();
    } else {
        Q_ASSERT(component);
        return component->root;
    }
}

/*!
Returns the property cache, if one alread exists.  The cache is not referenced.
*/
QDeclarativePropertyCache *QDeclarativeCompiledData::TypeReference::propertyCache() const
{
    if (type)
        return typePropertyCache;
    else
        return component->rootPropertyCache;
}

/*!
Returns the property cache, creating one if it doesn't already exist.  The cache is not referenced.
*/
QDeclarativePropertyCache *QDeclarativeCompiledData::TypeReference::createPropertyCache(QDeclarativeEngine *engine) 
{
    if (typePropertyCache) {
        return typePropertyCache;
    } else if (type) {
        typePropertyCache = QDeclarativeEnginePrivate::get(engine)->cache(type->metaObject());
        typePropertyCache->addref();
        return typePropertyCache;
    } else {
        return component->rootPropertyCache;
    }
}


void QDeclarativeCompiledData::dumpInstructions()
{
    if (!name.isEmpty())
        qWarning() << name;
    qWarning().nospace() << "Index\tLine\tOperation\t\tData1\tData2\tData3\tComments";
    qWarning().nospace() << "-------------------------------------------------------------------------------";
    for (int ii = 0; ii < bytecode.count(); ++ii) {
        dump(&bytecode[ii], ii);
    }
    qWarning().nospace() << "-------------------------------------------------------------------------------";
}


QT_END_NAMESPACE