root/tlate/def.hh

/*  This file is part of Alue, the multiprotocol Internet discussion daemon

    Copyright © 2009 Antti-Juhani Kaijanaho

    Alue 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.

    Alue 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 Alue.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef GUARD_TLATE_DEF_HH
#define GUARD_TLATE_DEF_HH

#include "expr.hh"
#include "tlate.hh"
#include "scanner.hh"
#include "seq.hh"

// use as "case TLATE_EXPR_FIRST:"
#define TLATE_DEF_FIRST scanner::DEF

namespace tlate
{
        class def : public tlate
        {
                std::string name;
                std::vector<std::string> parms;
                seq::ptr body;
                std::set<std::string> bodyfvs;
                size_t eval_count;
        public:
                typedef boost::shared_ptr<def> ptr;
                
                def(scanner &);

                value::const_ptr eval_(overriding_structured_value::ptr);
                std::set<std::string> fvs() const;
        };
}

#endif /* GUARD_TLATE_DEF_HH */