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kamailio/lvalue.h

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1.6 KiB

/*
* $Id$
*
* Copyright (C) 2008 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.
*/
/**
* @file
* @brief lvalues (assignment)
*/
/*
* History:
* --------
* 2008-11-30 initial version (andrei)
*/
#ifndef __lvalue_h_
#define __lvalue_h_
#include "rvalue.h"
#include "usr_avp.h"
#include "pvar.h"
#include "parser/msg_parser.h"
#include "action.h"
union lval_u{
pv_spec_t pvs;
avp_spec_t avps;
};
enum lval_type{
LV_NONE, LV_AVP, LV_PVAR
};
struct lvalue{
enum lval_type type;
union lval_u lv;
};
/* lval operators */
#define EQ_T 254 /* k compatibility */
/** eval rve and assign the result to lv
* lv=eval(rve)
*
* @param h - script context
* @param msg - sip msg
* @param lv - lvalue
* @param rve - rvalue expression
* @return >= 0 on success (expr. bool value), -1 on error
*/
int lval_assign(struct run_act_ctx* h, struct sip_msg* msg,
struct lvalue* lv, struct rval_expr* rve);
#endif /* __lvalue_h_*/