tol.h

/**
 * Copyright (c) 2014, Pietro Cerutti <gahr@gahr.ch> All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef TOL_H
#define TOL_H

#include <tcl.h>

#include <string>
#include <utility>
#include <vector>

#include "tolConfig.h"

class Tol
{
    using StringList = std::vector<std::string>;

public:
    Tol(int& argc, char** argv);
    ~Tol();
    int Run();

private:
    enum Flag
    {
        Continue = 0,
        IgnoreErrors,
        PrintResult,
        AccumulateCommands,
    };

    void SetFlag(Flag f)
    {
        m_flags |= (1 << f);
    }

    void UnsetFlag(Flag f)
    {
        m_flags &= ~(1 << f);
    }

    void ResetFlags()
    {
        m_flags = 0;
    }

    bool IsFlagged(Flag f) const
    {
        return m_flags & 1 << f;
    }

    void CreateInterp();
    void DeleteInterp();
    void ResetState();

    int Evaluate(const std::string& command);

    void PrintVersion() const;
    void PrintUsage() const;
    void PrintExamples() const;

private:
    Tcl_Interp* m_interp;
    StringList m_args;
    unsigned m_flags;
};

#endif /* !TOL_H */