#include <stdint.h>
#include <stdlib.h>
//#include <stdarg.h>
#include <stdio.h>

typedef enum
{
    STATE_ZERO,
    STATE_ONE
} state;
typedef enum
{
    EV_ZERO,
    EV_ONE,
    EV_TWO
} event_id_t;
typedef void *event_t;
// typedef uint8_t size_t;
// der Container für die Events
struct eventTransTab_s
{
    void (*transFunc)(event_t *const e); /* transition function */
    const uint16_t eventId;
    const uint16_t nextState;
};
// der Container für die States
struct fsm_state_data_s
{
    /* pointer auf ein Array */
    const struct eventTransTab_s (*const eventTable)[];
    const uint16_t eventTableSize;
    const uint16_t state;
};
// und die FSM
struct fsm
{
    const struct fsm_state_data_s (*const stateTable)[];
    const size_t stateTableSize;
    uint16_t currState;
};
#define ADD_EVENT(evNr, nextStNr, cbFunc)   {.eventId = (event_id_t)evNr, .nextState = (uint16_t)nextStNr, .transFunc = cbFunc }

#define CREATE_STATE(stateNr, ...)                                                                              \
    {   .state = stateNr, .eventTable = &((struct eventTransTab_s[]){__VA_ARGS__}),                            \
        .eventTableSize = sizeof(((struct eventTransTab_s[]){__VA_ARGS__})) / sizeof(struct eventTransTab_s)}

#define CREATE_FSM_TABLE(...)                                                                               \
    .stateTableSize = sizeof((struct fsm_state_data_s[]){__VA_ARGS__}) / sizeof(struct fsm_state_data_s),   \
    .stateTable = &((struct fsm_state_data_s[]){__VA_ARGS__ })

static struct fsm myFSM = {
    CREATE_FSM_TABLE(
        CREATE_STATE(STATE_ZERO, ADD_EVENT(EV_ZERO, STATE_ONE, NULL), ADD_EVENT(EV_ONE, STATE_ONE, NULL), ),
        CREATE_STATE(STATE_ONE, ADD_EVENT(EV_TWO, STATE_ZERO, NULL),  ), 
    ),
    .currState = STATE_ZERO,
};

int main()
{
    printf("\n Hello World \n");
    printf("Size of myFSM is %zu", sizeof(myFSM));
    return 0;
}