main.c

量子编程源代码 量子编程源代码

/*****************************************************************************
* Product:  Quantum Calculator Example
* Last Updated for Version: 3.4.00
* Date of the Last Update:  Sep 03, 2007
*
*                    Q u a n t u m     L e a P s
*                    ---------------------------
*                    innovating embedded systems
*
* Copyright (C) 2002-2007 Quantum Leaps, LLC. All rights reserved.
*
* This software may be distributed and modified under the terms of the GNU
* General Public License version 2 (GPL) as published by the Free Software
* Foundation and appearing in the file GPL.TXT included in the packaging of
* this file. Please note that GPL Section 2[b] requires that all works based
* on this software must also be made publicly available under the terms of
* the GPL ("Copyleft").
*
* Alternatively, this software may be distributed and modified under the
* terms of Quantum Leaps commercial licenses, which expressly supersede
* the GPL and are specifically designed for licensees interested in
* retaining the proprietary status of their code.
*
* Contact information:
* Quantum Leaps Web site:  http://www.quantum-leaps.com
* e-mail:                  [e-mail]
*****************************************************************************/
#include "qep_port.h"
#include "qcalc.h"
#include "qassert.h"

#include <termios.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Q_DEFINE_THIS_FILE

/* Local objects -----------------------------------------------------------*/
static QCalc l_qcalc;      /* quantum calculator hierarchical state machine */
struct termios l_saved;         /* structure with saved terminal attributes */

/*..........................................................................*/
int main() {
    struct termios tio;                     /* modified terminal attributes */

    tcgetattr(0, &l_saved);         /* save the current terminal attributes */
    tcgetattr(0, &tio);              /* get the current terminal attributes */
    tio.c_lflag &= ~ICANON;                       /* disable canonical mode */
    tcsetattr(0, TCSANOW, &tio);                  /* set the new attributes */

    QCalc_ctor(&l_qcalc);

    printf("QCalc example, built on %s at %s,\n"
           "QEP/C: %s.\nPress ESC to quit...\n",
           __DATE__, __TIME__, QEP_getVersion());

    QHsm_init((QHsm *)&l_qcalc, (QEvent *)0);      /* trigger initial tran. */

    for (;;) {                                                /* event loop */
        QCalcEvt e;

        printf("\n[%s] >", QCalc_getDisplay(&l_qcalc)); /* show the display */
        fflush(stdout);

        read(0, &e.keyId, 1);        /* read one character from the console */
        printf(": ");
        fflush(stdout);

        switch (e.keyId) {
            case 'c':                         /* intentionally fall through */
            case 'C': {
                ((QEvent *)&e)->sig = C_SIG;
                break;
            }
            case 'e':                         /* intentionally fall through */
            case 'E': {
                ((QEvent *)&e)->sig = CE_SIG;
                break;
            }
            case '0': {
                ((QEvent *)&e)->sig = DIGIT_0_SIG;
                break;
            }
            case '1':                         /* intentionally fall through */
            case '2':                         /* intentionally fall through */
            case '3':                         /* intentionally fall through */
            case '4':                         /* intentionally fall through */
            case '5':                         /* intentionally fall through */
            case '6':                         /* intentionally fall through */
            case '7':                         /* intentionally fall through */
            case '8':                         /* intentionally fall through */
            case '9': {
                ((QEvent *)&e)->sig = DIGIT_1_9_SIG;
                break;
            }
            case '.': {
                ((QEvent *)&e)->sig = POINT_SIG;
                break;
            }
            case '+':                         /* intentionally fall through */
            case '-':                         /* intentionally fall through */
            case '*':                         /* intentionally fall through */
            case '/': {
                ((QEvent *)&e)->sig = OPER_SIG;
                break;
            }
            case '=':                         /* intentionally fall through */
            case '\r': {                                       /* Enter key */
                ((QEvent *)&e)->sig = EQUALS_SIG;
                break;
            }
            case '\33': {                                        /* ESC key */
                ((QEvent *)&e)->sig = TERMINATE_SIG;
                break;
            }
            default: {
                ((QEvent *)&e)->sig = IGNORE_SIG;
                break;
            }
        }

        QHsm_dispatch((QHsm *)&l_qcalc, (QEvent *)&e);/* dispatch the event */
    }

    return 0;
}
/*..........................................................................*/
void Q_assert_handler(char const Q_ROM * const Q_ROM_VAR file, int line) {
    fprintf(stderr, "Assertion failed in %s, line %d", file, line);
    exit(-1);
}
/*..........................................................................*/
void QCalc_updateState(QCalc *me, char const *s) {
    (void)me;              /* suppress the "unreferenced parameter" warning */
    printf("%s;", s);
}
/*..........................................................................*/
void QCalc_exit(QCalc *me) {
    (void)me;              /* suppress the "unreferenced parameter" warning */
    printf("Bye, Bye!");
    tcsetattr(0, TCSANOW, &l_saved);/*restore the saved terminal attributes */
    exit(0);
}