qt5base-lts/qmake/cachekeys.h

/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the qmake application of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef CACHEKEYS_H
#define CACHEKEYS_H

#include "project.h"
#include <qstring.h>
#include <qstringlist.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qhash.h>

QT_BEGIN_NAMESPACE

// -------------------------------------------------------------------------------------------------
struct FixStringCacheKey
{
    mutable uint hash;
    QString string, pwd;
    uchar flags;
    FixStringCacheKey(const QString &s, uchar f)
    {
        hash = 0;
        pwd = qmake_getpwd();
        string = s;
        flags = f;
    }
    bool operator==(const FixStringCacheKey &f) const
    {
        return (hashCode() == f.hashCode() &&
                f.flags == flags &&
                f.string == string &&
                f.pwd == pwd);
    }
    inline uint hashCode() const {
        if(!hash)
            hash = qHash(string) ^ qHash(flags) /*^ qHash(pwd)*/;
        return hash;
    }
};
inline uint qHash(const FixStringCacheKey &f) { return f.hashCode(); }

// -------------------------------------------------------------------------------------------------
struct FileInfoCacheKey
{
    mutable uint hash;
    QString file, pwd;
    FileInfoCacheKey(const QString &f)
    {
        hash = 0;
        if(isRelativePath(f))
            pwd = qmake_getpwd();
        file = f;
    }
    bool operator==(const FileInfoCacheKey &f) const
    {
        return (hashCode() == f.hashCode() && f.file == file &&
                f.pwd == pwd);
    }
    inline uint hashCode() const {
        if(!hash)
            hash = qHash(file) /*^ qHash(pwd)*/;
        return hash;
    }
    inline bool isRelativePath(const QString &file) {
        int length = file.length();
        if (!length)
            return true;

        const QChar c0 = file.at(0);
        const QChar c1 = length >= 2 ? file.at(1) : QChar(0);
        return !(c0 == QLatin1Char('/')
                || c0 == QLatin1Char('\\')
                || (c0.isLetter() && c1 == QLatin1Char(':'))
                || (c0 == QLatin1Char('/') && c1 == QLatin1Char('/'))
                || (c0 == QLatin1Char('\\') && c1 == QLatin1Char('\\')));
    }
};
inline uint qHash(const FileInfoCacheKey &f) { return f.hashCode(); }

// -------------------------------------------------------------------------------------------------
template <typename T>
inline void qmakeDeleteCacheClear(void *i) { delete reinterpret_cast<T*>(i); }

inline void qmakeFreeCacheClear(void *i) { free(i); }

typedef void (*qmakeCacheClearFunc)(void *);
void qmakeAddCacheClear(qmakeCacheClearFunc func, void **);
void qmakeClearCaches();

QT_END_NAMESPACE

#endif // CACHEKEYS_H