calc.c

事件驱动程序设计很好的框架

    }
    return Q_SUPER(&Calc_on);
}
/*..........................................................................*/
QState Calc_operand1(Calc *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("operand1-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("operand1-EXIT;");
            return Q_HANDLED();
        }
        case CE_SIG: {
            BSP_clear();
            return Q_TRAN(&Calc_begin);
        }
        case OPER_SIG: {
            me->operand1 = BSP_get_value();
            me->operator = ((CalcEvt const *)e)->key_code;
            return Q_TRAN(&Calc_opEntered);
        }
    }
    return Q_SUPER(&Calc_on);
}
/*..........................................................................*/
QState Calc_zero1(Calc *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("zero1-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("zero1-EXIT;");
            return Q_HANDLED();
        }
        case DIGIT_0_SIG: {
            ;                                          /* explicitly ignore */
            return Q_HANDLED();
        }
        case DIGIT_1_9_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_TRAN(&Calc_int1);
        }
        case POINT_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_TRAN(&Calc_frac1);
        }
    }
    return Q_SUPER(&Calc_on);
}
/*..........................................................................*/
QState Calc_int1(Calc *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("int1-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("int1-EXIT;");
            return Q_HANDLED();
        }
        case DIGIT_0_SIG:                     /* intentionally fall through */
        case DIGIT_1_9_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_HANDLED();
        }
        case POINT_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_TRAN(&Calc_frac1);
        }
    }
    return Q_SUPER(&Calc_operand1);
}
/*..........................................................................*/
QState Calc_frac1(Calc *me, QEvent const *e) {
    (void)me;               /* avoid compiler warning about unused argument */
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("frac1-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("frac1-EXIT;");
            return Q_HANDLED();
        }
        case DIGIT_0_SIG:                     /* intentionally fall through */
        case DIGIT_1_9_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_HANDLED();
        }
        case POINT_SIG: {
            ;                                          /* explicitly ignore */
            return Q_HANDLED();
        }
    }
    return Q_SUPER(&Calc_operand1);
}
/*..........................................................................*/
QState Calc_opEntered(Calc *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("opEntered-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("opEntered-EXIT;");
            return Q_HANDLED();
        }
        case OPER_SIG: {
            if (((CalcEvt const *)e)->key_code == KEY_MINUS) {
                BSP_clear();
                return Q_TRAN(&Calc_negated2);
            }
            break;
        }
        case DIGIT_0_SIG: {
            BSP_clear();
            return Q_TRAN(&Calc_zero2);
        }
        case DIGIT_1_9_SIG: {
            BSP_clear();
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_TRAN(&Calc_int2);
        }
        case POINT_SIG: {
            BSP_clear();
            BSP_insert((int)'0');
            BSP_insert((int)'.');
            return Q_TRAN(&Calc_frac2);
        }
    }
    return Q_SUPER(&Calc_on);
}
/*..........................................................................*/
QState Calc_operand2(Calc *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("operand2-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("operand2-EXIT;");
            return Q_HANDLED();
        }
        case CE_SIG: {
            BSP_clear();
            return Q_TRAN(&Calc_opEntered);
        }
        case OPER_SIG: {
            if (BSP_eval(me->operand1, me->operator)) {
                me->operand1 = BSP_get_value();
                me->operator = ((CalcEvt const *)e)->key_code;
                return Q_TRAN(&Calc_opEntered);
            }
            else {
                return Q_TRAN(&Calc_error);
            }
        }
        case EQUALS_SIG: {
            if (BSP_eval(me->operand1, me->operator)) {
                return Q_TRAN(&Calc_result);
            }
            else {
                return Q_TRAN(&Calc_error);
            }
        }
    }
    return Q_SUPER(&Calc_on);
}
/*..........................................................................*/
QState Calc_zero2(Calc *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("zero2-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("zero2-EXIT;");
            return Q_HANDLED();
        }
        case DIGIT_0_SIG: {
            ;                                          /* explicitly ignore */
            return Q_HANDLED();
        }
        case DIGIT_1_9_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_TRAN(&Calc_int2);
        }
        case POINT_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_TRAN(&Calc_frac2);
        }
    }
    return Q_SUPER(&Calc_operand2);
}
/*..........................................................................*/
QState Calc_int2(Calc *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("int2-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("int2-EXIT;");
            return Q_HANDLED();
        }
        case DIGIT_0_SIG:                     /* intentionally fall through */
        case DIGIT_1_9_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_HANDLED();
        }
        case POINT_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_TRAN(&Calc_frac2);
        }
    }
    return Q_SUPER(&Calc_operand2);
}
/*..........................................................................*/
QState Calc_frac2(Calc *me, QEvent const *e) {
    (void)me;               /* avoid compiler warning about unused argument */
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("frac2-ENTRY;");
            return Q_HANDLED();
        }
        case Q_EXIT_SIG: {
            BSP_message("frac2-EXIT;");
            return Q_HANDLED();
        }
        case DIGIT_0_SIG:                     /* intentionally fall through */
        case DIGIT_1_9_SIG: {
            BSP_insert(((CalcEvt const *)e)->key_code);
            return Q_HANDLED();
        }
        case POINT_SIG: {
            ;                                          /* explicitly ignore */
            return Q_HANDLED();
        }
   }
    return Q_SUPER(&Calc_operand2);
}
/*..........................................................................*/
QState Calc_final(Calc *me, QEvent const *e) {
    (void)me;               /* avoid compiler warning about unused argument */
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            BSP_message("final-ENTRY;");
            BSP_exit();
            return Q_HANDLED();
        }
    }
    return Q_SUPER(&QHsm_top);
}