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//
//      aegis - project change supervisor
//      Copyright (C) 2007, 2008, 2012 Peter Miller
//
//      This program is free software; you can redistribute it and/or modify
//      it under the terms of the GNU General Public License as published by
//      the Free Software Foundation; either version 3 of the License, or
//      (at your option) any later version.
//
//      This program is distributed in the hope that it will be useful,
//      but WITHOUT ANY WARRANTY; without even the implied warranty of
//      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//      GNU General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program. If not, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef LIBAEGIS_SUB_FUNCTOR_GLUE_H
#define LIBAEGIS_SUB_FUNCTOR_GLUE_H

#include <libaegis/sub/functor.h>

class sub_functor_glue:
    public sub_functor
{
public:
    virtual ~sub_functor_glue();

    typedef wstring (*func_p)(sub_context_ty *scp, const wstring_list &arg);

private:
    sub_functor_glue(const nstring &name, func_p what, bool resub);

public:
    static pointer create(const nstring &name, func_p what);

    static pointer create(const nstring &name, func_p what, bool resub);

protected:
    // See base class for documentation.
    wstring evaluate(sub_context_ty *cp, const wstring_list &arg);

    // See base class for documentation.
    bool resubstitute() const;

    // See base class for documentation.
    bool append_if_unused() const;

    // See base class for documentation.
    bool override() const;

    // See base class for documentation.
    bool must_be_used() const;

    // See base class for documentation.
    void resubstitute_set();

    // See base class for documentation.
    void optional_set();

    // See base class for documentation.
    void append_if_unused_set();

    // See base class for documentation.
    void override_set();

private:
    func_p what;

    bool resub;

    sub_functor_glue();

    sub_functor_glue(const sub_functor_glue &);

    sub_functor_glue &operator=(const sub_functor_glue &);
};

#endif // LIBAEGIS_SUB_FUNCTOR_GLUE_H
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