c小问题

C/C++ code:

command.h
/* DEFUN for vty command interafce. Little bit hacky ;-). */
#define DEFUN(funcname, cmdname, cmdstr, helpstr) \
int funcname (struct cmd_element *, struct vty *, int, char **); \
struct cmd_element cmdname = \
{ \
cmdstr, \
funcname, \
helpstr \
}; \
int funcname \
(struct cmd_element *self, struct vty *vty, int argc, char **argv)





C/C++ code:

command.c
/* Enable command */
DEFUN (enable,
config_enable_cmd,
"enable",
"Turn on privileged mode command\n")
{
/* If enable password is NULL, change to ENABLE_NODE */
if ((host.enable == NULL && host.enable_encrypt == NULL) ||
vty->type == VTY_SHELL_SERV)
vty->node = ENABLE_NODE;
else
vty->node = AUTH_ENABLE_NODE;

return CMD_SUCCESS;
}


读开源代码,宏里面包括结构体的形式第一次看见...以上是不是相当于下面代码


C/C++ code:

int enable (struct cmd_element *, struct vty *, int, char **);
struct cmd_element config_enable_cmd =
{
"enable",
enable,