/*
**  OSSP cfg - Configuration Parsing
**  Copyright (c) 1999-2002 Ralf S. Engelschall <rse@engelschall.com>
**  Copyright (c) 1999-2002 The OSSP Project (http://www.ossp.org/)
**  Copyright (c) 2001-2002 Cable & Wireless Deutschland (http://www.cw.com/de/)
**
**  This file is part of OSSP cfg, a configuration parsing
**  library which can be found at http://www.ossp.org/pkg/lib/cfg/.
**
**  Permission to use, copy, modify, and distribute this software for
**  any purpose with or without fee is hereby granted, provided that
**  the above copyright notice and this permission notice appear in all
**  copies.
**
**  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 AUTHORS AND COPYRIGHT HOLDERS AND THEIR
**  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 CONTRCFG, 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.
**
**  cfg_node.h: configuration nodes (internals)
*/

#ifndef __CFG_NODE_H__
#define __CFG_NODE_H__

#include "cfg.h"

typedef enum {
    CFG_DATA_TYPE_PTR,
    CFG_DATA_TYPE_CHAR,
    CFG_DATA_TYPE_INT,
    CFG_DATA_TYPE_LONG,
    CFG_DATA_TYPE_FLOAT,
    CFG_DATA_TYPE_DOUBLE
} cfg_data_type_t;

typedef union {
    void  *p;
    char   c;
    int    i;
    long   l;
    float  f;
    double d;
} cfg_data_union_t;

typedef struct {
    cfg_data_type_t t;       /* data type       */
    cfg_data_union_t u;      /* data storage    */
    void (*d)(               /* data destructor */
        cfg_data_type_t t,
        cfg_data_union_t *u
    );
} cfg_data_t;

struct cfg_node_st {
    cfg_node_type_t type;    /* type of node */
    cfg_node_t     *parent;  /* pointer to parent node */
    cfg_node_t     *rbroth;  /* pointer to right brother node */
    cfg_node_t     *child1;  /* pointer to first child node */
    char           *token;   /* pointer to corresponding token string */
    cfg_data_t      data;    /* annotation data */ 
};

#endif /* __CFG_NODE_H__ */