/*
 * Copyright (C) 2009 iptelorg GmbH
 *
 * 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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef __switch_h
#define __switch_h

#include <stddef.h>
#include <regex.h>

#include "route_struct.h"


struct case_stms
{
	struct rval_expr *ct_rve;
	struct action *actions;
	struct case_stms *next;
	struct case_stms **append;
	int type;	  /**< type: MATCH_UNKOWN, MATCH_INT, MATCH_STR, MATCH_RE */
	int re_flags; /**< used only for REs */
	int is_default;
	union
	{
		int match_int;
		str match_str;
		regex_t *match_re;
	} label; /**< fixed case argument */
};


struct switch_cond_table
{
	int n;				  /**< size */
	int *cond;			  /**< int labels array */
	struct action **jump; /**< jump points array */
	struct action *def;	  /**< default jump  */
};


struct switch_jmp_table
{
	int first;			 /**< first int label in the jump table */
	int last;			 /**< last int label in the jump table */
	struct action **tbl; /**< jmp table [v-first] iff first<=v<=last */
	struct switch_cond_table rest; /**< normal cond. table for the rest */
};


enum match_str_type
{
	MATCH_UNKNOWN,
	MATCH_INT,
	MATCH_STR,
	MATCH_RE
};

struct match_str
{
	enum match_str_type type; /**< string or RE */
	int flags;				  /**< flags for re */
	union
	{
		str s;			/* string */
		regex_t *regex; /**< compiled regex */
	} l;
};

struct match_cond_table
{
	int n;					 /**< size */
	struct match_str *match; /**< match array */
	struct action **jump;	 /**< jump points array */
	struct action *def;		 /**< default jmp */
};

int fix_switch(struct action *t);

#endif /*__switch_h*/

/* vi: set ts=4 sw=4 tw=79:ai:cindent: */
