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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef UTILS_H
#define UTILS_H

#include <QtCore/qglobal.h>

QT_BEGIN_NAMESPACE

inline bool is_whitespace(char s)
{
    return (s == ' ' || s == '\t' || s == '\n');
}

inline bool is_space(char s)
{
    return (s == ' ' || s == '\t');
}

inline bool is_ident_start(char s)
{
    return ((s >= 'a' && s <= 'z')
            || (s >= 'A' && s <= 'Z')
            || s == '_' || s == '$'
       );
}

inline bool is_ident_char(char s)
{
    return ((s >= 'a' && s <= 'z')
            || (s >= 'A' && s <= 'Z')
            || (s >= '0' && s <= '9')
            || s == '_' || s == '$'
       );
}

inline bool is_identifier(const char *s, int len)
{
    if (len < 1)
        return false;
    if (!is_ident_start(*s))
        return false;
    for (int i = 1; i < len; ++i)
        if (!is_ident_char(s[i]))
            return false;
    return true;
}

inline bool is_digit_char(char s)
{
    return (s >= '0' && s <= '9');
}

inline bool is_octal_char(char s)
{
    return (s >= '0' && s <= '7');
}

inline bool is_hex_char(char s)
{
    return ((s >= 'a' && s <= 'f')
            || (s >= 'A' && s <= 'F')
            || (s >= '0' && s <= '9')
       );
}

inline const char *skipQuote(const char *data)
{
    while (*data && (*data != '\"')) {
        if (*data == '\\') {
            ++data;
            if (!*data) break;
        }
        ++data;
    }

    if (*data)  //Skip last quote
        ++data;
    return data;
}

QT_END_NAMESPACE

#endif // UTILS_H