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/** @file
*
* Wireshark - Network traffic analyzer
*
* Copyright 2006 Gilbert Ramirez <gram@alumni.rice.edu>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef DFUNCTIONS_H
#define DFUNCTIONS_H
#include <glib.h>
#include <ftypes/ftypes.h>
#include "syntax-tree.h"
#include "dfilter-int.h"
/* Functions take any number of arguments and return 1. */
/* The run-time logic of the dfilter function */
typedef bool (*DFFuncType)(GSList *stack, uint32_t arg_count, df_cell_t *retval);
/* The semantic check for the dfilter function */
typedef ftenum_t (*DFSemCheckType)(dfwork_t *dfw, const char *func_name, ftenum_t lhs_ftype,
GSList *param_list, df_loc_t func_loc);
/* This is a "function definition" record, holding everything
* we need to know about a function */
typedef struct {
const char *name;
DFFuncType function;
unsigned min_nargs;
unsigned max_nargs; /* 0 for no limit */
DFSemCheckType semcheck_param_function;
} df_func_def_t;
/* Return the function definition record for a function of named "name" */
df_func_def_t* df_func_lookup(const char *name);
#endif
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