qmk-firmware/users/dennytom/chording_engine/engine.part.2

void single_dance(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            key_in(self->value1);
            break;
        case DEACTIVATED:
            key_out(self->value1);
            *self->state = IDLE;
            break;
        case RESTART:
            key_out(self->value1);
            break;
        default:
            break;
    }
}

void key_layer_dance(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            current_pseudolayer = self->value2;
            a_key_went_through = false;
            break;
        case DEACTIVATED:
        case RESTART:
            if (!a_key_went_through) {
                tap_key(self->value1);
            }
            current_pseudolayer = self->pseudolayer;
            *self->state = IDLE; // does not have effect if the state was RESTART
            break;
        default:
            break;
    }
}

void key_mod_dance(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            key_in(self->value2);
            a_key_went_through = false;
            break;
        case DEACTIVATED:
        case RESTART:
            key_out(self->value2);
            if (!a_key_went_through) {
                tap_key(self->value1);
            }
            *self->state = IDLE; // does not have effect if the state was RESTART
            break;
        default:
            break;
    }
}

void key_key_dance(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            break;
        case DEACTIVATED:
            tap_key(self->value1);
            *self->state = IDLE;
            break;
        case FINISHED:
        case PRESS_FROM_ACTIVE:
            key_in(self->value2);
            break;
        case RESTART:
            key_out(self->value2);
            break;
        default:
            break;
    }
}

void autoshift_dance_impl(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            *self->counter = 0;
            break;
        case DEACTIVATED:
        case RESTART:
            tap_key(self->value1);
            *self->state = IDLE;
            break;
        case FINISHED_FROM_ACTIVE:
            if (*self->counter == (LONG_PRESS_MULTIPLIER - 2)) {
                key_in(KC_LSFT);
                tap_key(self->value1);
                key_out(KC_LSFT);
                *self->state = IDLE;
                // the skip to IDLE is usually just a lag optimization,
                // in this case it has a logic function, on a short
                // press (still longer than a tap) the key does not get shifted
            } else {
                *self->counter += 1;
                *self->state = PRESS_FROM_ACTIVE;
                dance_timer = timer_read();
            }
            break;
        default:
            break;
    }
}

void autoshift_dance(const struct Chord* self) {
    if (autoshift_mode) {
        autoshift_dance_impl(self);
    } else {
        single_dance(self);
    }
}

void autoshift_toggle(const struct Chord* self){
    if (*self->state == ACTIVATED) {
        autoshift_mode = !autoshift_mode;
        *self->state = IDLE;
    }
}

void temp_pseudolayer(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            current_pseudolayer = self->value1;
            break;
        case DEACTIVATED:
            current_pseudolayer = self->pseudolayer;
            *self->state = IDLE;
            break;
        case RESTART:
            current_pseudolayer = self->pseudolayer;
            break;
        default:
            break;
    }
}

void temp_pseudolayer_alt(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            current_pseudolayer = self->value1;
            break;
        case DEACTIVATED:
            current_pseudolayer = self->value2;
            *self->state = IDLE;
            break;
        case RESTART:
            current_pseudolayer = self->value2;
            break;
        default:
            break;
    }
}

void perm_pseudolayer(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        current_pseudolayer = self->value1;
        *self->state = IDLE;
    }
}

void switch_layer(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        layer_move(self->value1);
        *self->state = IDLE;
    }
}

void lock(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        lock_next = true;
        *self->state = IDLE;
    }
}

void one_shot_key(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            break;
        case DEACTIVATED:
            key_in(self->value1);
            *self->state = IN_ONE_SHOT;
            break;
        case FINISHED:
        case PRESS_FROM_ACTIVE:
            key_in(self->value1);
            a_key_went_through = false;
            break;
        case RESTART:
            if (a_key_went_through) {
                key_out(self->value1);
            } else {
                *self->state = IN_ONE_SHOT;
            }
        default:
            break;
    }
}

void one_shot_layer(const struct Chord* self) {
    switch (*self->state) {
        case ACTIVATED:
            break;
        case DEACTIVATED:
            current_pseudolayer = self->value1;
            *self->state = IN_ONE_SHOT;
            break;
        case FINISHED:
        case PRESS_FROM_ACTIVE:
            current_pseudolayer = self->value1;
            a_key_went_through = false;
            break;
        case RESTART:
            if (a_key_went_through) {
                current_pseudolayer = self->pseudolayer;
            } else {
                *self->state = IN_ONE_SHOT;
            }
        default:
            break;
    }
}

void command(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        command_mode++;
        *self->state = IDLE;
    }
}

bool identical(uint16_t* buffer1, uint16_t* buffer2) {
    bool same = true;
    for (int i = 0; i < LEADER_MAX_LENGTH; i++) {
        same = same && (buffer1[i] == buffer2[i]);
    }
    return same;
}

void leader(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        in_leader_mode = true;
        *self->state = IDLE;
    }
}

void dynamic_macro_record(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        for (int i = 0; i < DYNAMIC_MACRO_MAX_LENGTH; i++) {
            dynamic_macro_buffer[i] = 0;
        }
        dynamic_macro_mode = true;
        *self->state = IDLE;
    }
}

void dynamic_macro_next(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        if (dynamic_macro_mode && dynamic_macro_ind < DYNAMIC_MACRO_MAX_LENGTH) {
            dynamic_macro_buffer[dynamic_macro_ind] = 0;
            dynamic_macro_ind++;
        }
        *self->state = IDLE;
    }
}

void dynamic_macro_end(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        if (dynamic_macro_mode) {
            dynamic_macro_mode = false;
        }
        *self->state = IDLE;
    }
}

void dynamic_macro_play(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        int ind_start = 0;
        while (ind_start < DYNAMIC_MACRO_MAX_LENGTH) {
            for (int i = ind_start; i < DYNAMIC_MACRO_MAX_LENGTH; i++) {
                if (dynamic_macro_buffer[i] == 0) {
                    break;
                }
                register_code(dynamic_macro_buffer[i]);
            }
            send_keyboard_report();
            wait_ms(TAP_TIMEOUT);
            for (int i = ind_start; i < DYNAMIC_MACRO_MAX_LENGTH; i++) {
                if (dynamic_macro_buffer[i] == 0) {
                    ind_start = i + 1;
                    break;
                }
                unregister_code(dynamic_macro_buffer[i]);
            }
            send_keyboard_report();
        }
        *self->state = IDLE;
    }
}

void string_in(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        char buffer[STRING_MAX_LENGTH];
        strcpy_P(buffer, (char*)pgm_read_word(&(strings[self->value1])));
        send_string(buffer);
    }
}

void clear(const struct Chord* self);

void reset_keyboard_kb(void){
#ifdef WATCHDOG_ENABLE
    MCUSR = 0;
    wdt_disable();
    wdt_reset();
#endif
    reset_keyboard();
}

void reset(const struct Chord* self) {
    if (*self->state == ACTIVATED) {
        reset_keyboard_kb();
    }
}