state_manager.h

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#ifndef STATE_MANAGER_
#define STATE_MANAGER_


#define STATE_MNG_SUCCESS (0)
#define STATE_MNG_FAILED (-1)

typedef struct state_info_t {
    int state;
    char *name;
    int (*state_method)(void *arg);
} state_info_t;

#define STATE_MNG_SET_INFO_INIT(instate, fname) {.state=(instate), .name=#fname, .state_method = (fname)}

#define STATE_MNG_SET_INFO(info, instate, fname) {(info).state=(instate); (info).name=#fname; (info).state_method = (fname) ; }

struct state_manager_t;
typedef struct state_manager_t *StateManager;

StateManager state_manager_new(size_t state_info_num, const state_info_t * state);
int state_manager_update_method(StateManager this, const state_info_t * state);
void state_manager_set_state(StateManager this, int state);
int state_manager_get_current_state(StateManager this);
int state_manager_call(StateManager this, void *arg);
void state_manager_show(StateManager this);
void state_manager_free(StateManager this);
#endif