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/*
* 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"
/* The run-time logic of the dfilter function */
typedef gboolean (*DFFuncType)(GList *arg1list, GList *arg2list, GList **retval);
/* The semantic check for the dfilter function */
typedef void (*DFSemCheckType)(dfwork_t *dfw, int param_num, stnode_t *st_node);
/* If a function needs more args than this, increase
* this macro and add more arg members to the dfvm_insn_t
* struct in dfvm.h, and add some logic to dfw_append_function()
* and dfvm_apply() */
#define DFUNCTION_MAX_NARGS 2
/* This is a "function definition" record, holding everything
* we need to know about a function */
typedef struct {
const char *name;
DFFuncType function;
ftenum_t retval_ftype;
guint min_nargs;
guint max_nargs;
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(char *name);
#endif
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