fsm.h

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/* ========================================================================= */
#ifndef __WLMTK_FSM_H__
#define __WLMTK_FSM_H__
 
#include <libbase/libbase.h>
#include <stdbool.h>
#include <stddef.h>
 
#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus

typedef struct _wlmtk_fsm_t wlmtk_fsm_t;

typedef struct {
    int                       state;
    int                       event;
    int                       to_state;
    bool                      (*handler)(wlmtk_fsm_t *fsm_ptr, void *ud_ptr);
} wlmtk_fsm_transition_t;

struct _wlmtk_fsm_t {
    const wlmtk_fsm_transition_t *transitions;
    int                       state;
};

#define WLMTK_FSM_TRANSITION_SENTINEL {         \
        .state = -1,                            \
        .event = -1,                            \
        .to_state = -1,                         \
        .handler = NULL,                        \
    }

void wlmtk_fsm_init(
    wlmtk_fsm_t *fsm_ptr,
    const wlmtk_fsm_transition_t *transitions,
    int initial_state);

bool wlmtk_fsm_event(
    wlmtk_fsm_t *fsm_ptr,
    int event,
    void *ud_ptr);

extern const bs_test_case_t wlmtk_fsm_test_cases[];
 
#ifdef __cplusplus
}  // extern "C"
#endif  // __cplusplus
 
#endif /* __WLMTK_FSM_H__ */
/* == End of fsm.h ====================================================== */