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//
// UCSD p-System cross compiler
// Copyright (C) 2006 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 2 of the License, or (at
// you 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, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
// USA
//

#ifndef LIB_SYMBOL_H
#define LIB_SYMBOL_H

#include <lib/bit_address.h>
#include <lib/location.h>
#include <lib/rcstring.h>
#include <lib/type.h>

class variable_name; // forward

class symbol
{
public:
    virtual ~symbol();

    symbol(const variable_name &name, const type::pointer &typ,
        int lex_level);

    symbol(const rcstring &name, const type::pointer &typ, int lex_level);

    rcstring get_name() const { return name; }

    type::pointer get_type() const { return type; }

    const bit_address &get_bit_offset() const { return bit_offset; }

    void set_bit_offset(const bit_address &boff, bool pkd);

    virtual unsigned get_size_in_bytes() const;

    virtual unsigned get_size_in_bits() const;

    void add_reference(const rcstring &name);

    virtual void add_reference(const variable_name &name);

    int get_lex_level() const { return lex_level; }

    const location &get_declaration_location() const { return locn; }

    bool is_packed() const;

    virtual void type_late_binding();

    virtual void check_defined();

protected:
    void change_type(const type::pointer &tsp);

private:
    rcstring name;

    location locn;

    type::pointer type;

    bit_address bit_offset;

    bool packed;

    int lex_level;

    symbol();

    symbol(const symbol &);

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

#endif // LIB_SYMBOL_H

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