/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** 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
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** use the contact form at http://qt.digia.com/contact-us.
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** 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.
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****************************************************************************/

#include "artifact.h"

#include "transformer.h"
#include "buildgraphvisitor.h"
#include <language/propertymapinternal.h>
#include <tools/fileinfo.h>
#include <tools/persistence.h>

QT_BEGIN_NAMESPACE

static QDataStream &operator >>(QDataStream &s, qbs::Internal::Artifact::ArtifactType &t)
{
    int i;
    s >> i;
    t = static_cast<qbs::Internal::Artifact::ArtifactType>(i);
    return s;
}

static QDataStream &operator <<(QDataStream &s, const qbs::Internal::Artifact::ArtifactType &t)
{
    return s << (int)t;
}

QT_END_NAMESPACE

namespace qbs {
namespace Internal {

Artifact::Artifact()
{
    initialize();
}

Artifact::~Artifact()
{
    foreach (Artifact *p, parentArtifacts())
        p->childrenAddedByScanner.remove(this);
}

void Artifact::accept(BuildGraphVisitor *visitor)
{
    if (visitor->visit(this))
        acceptChildren(visitor);
}

QString Artifact::toString() const
{
    return QLatin1String("ARTIFACT ") + filePath();
}

void Artifact::initialize()
{
    artifactType = Unknown;
    buildState = Untouched;
    inputsScanned = false;
    timestampRetrieved = false;
    alwaysUpdated = true;
    oldDataPossiblyPresent = true;
}

ArtifactSet Artifact::parentArtifacts() const
{
    return ArtifactSet::fromNodeSet(parents);
}

ArtifactSet Artifact::childArtifacts() const
{
    return ArtifactSet::fromNodeSet(children);
}

void Artifact::onChildDisconnected(BuildGraphNode *child)
{
    Artifact *childArtifact = dynamic_cast<Artifact *>(child);
    if (!childArtifact)
        return;
    childrenAddedByScanner.remove(childArtifact);
}

void Artifact::load(PersistentPool &pool)
{
    FileResourceBase::load(pool);
    BuildGraphNode::load(pool);
    children.load(pool);

    // restore parents of the loaded children
    for (NodeSet::const_iterator it = children.constBegin(); it != children.constEnd(); ++it)
        (*it)->parents.insert(this);

    pool.loadContainer(childrenAddedByScanner);
    pool.loadContainer(fileDependencies);
    properties = pool.idLoadS<PropertyMapInternal>();
    transformer = pool.idLoadS<Transformer>();
    unsigned char c;
    pool.stream()
            >> fileTags
            >> artifactType
            >> c;
    alwaysUpdated = c;
    pool.stream() >> c;
    oldDataPossiblyPresent = c;
}

void Artifact::store(PersistentPool &pool) const
{
    FileResourceBase::store(pool);
    BuildGraphNode::store(pool);
    // Do not store parents to avoid recursion.
    children.store(pool);
    pool.storeContainer(childrenAddedByScanner);
    pool.storeContainer(fileDependencies);
    pool.store(properties);
    pool.store(transformer);
    pool.stream()
            << fileTags
            << artifactType
            << static_cast<unsigned char>(alwaysUpdated)
            << static_cast<unsigned char>(oldDataPossiblyPresent);
}

} // namespace Internal
} // namespace qbs