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//
// aegis - project change supervisor
// Copyright (C) 2008 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_META_CONTEXT_SEM_H
#define LIBAEGIS_META_CONTEXT_SEM_H

#include <libaegis/meta_context.h>

class input; // forward
class meta_type; // forward

class meta_context_sem:
    public meta_context
{
public:
    virtual ~meta_context_sem();

    meta_context_sem();

    void *parse(const nstring &filename, meta_type *type);

    void *parse_env(const nstring &name, meta_type *type);

    void *parse_input(input &ifp, meta_type *type);

protected:
    // See base class for documentation.
    void integer(long n);

    // See base class for documentation.
    void real(double n);

    // See base class for documentation.
    void string(const nstring &s);

    // See base class for documentation.
    void enumeration(const nstring &s);

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

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

    // See base class for documentation.
    void field(const nstring &name);

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

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

private:
    struct sem_ty
    {
        meta_type *type;
        sem_ty *next;
        void *addr;
    };

    sem_ty *root;

    void sem_push(meta_type *type, void *addr);

    void sem_pop();

    meta_context_sem(const meta_context_sem &);

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

#endif // LIBAEGIS_META_CONTEXT_SEM_H