doslex.c

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

static const short int yy_def[37] =
    {   0,
       33,    1,   33,   33,   33,   33,   34,   35,   33,   33,
       33,   33,   33,   33,   33,   33,   36,   33,   33,   36,
       34,   33,   34,   34,   35,   33,   33,   33,   36,   34,
       34,   34,    0,   33,   33,   33
    } ;

static const short int yy_nxt[76] =
    {   0,
        4,    5,    6,    7,    8,    9,   10,    4,   11,   12,
       13,   14,   15,   16,   17,   18,    4,   19,   20,    4,
       22,   22,   30,   29,   27,   26,   22,   22,   30,   27,
       28,   27,   30,   23,   23,   23,   24,   24,   24,   31,
       23,   32,   24,   24,   24,   23,   26,   33,   24,   21,
       21,   21,   25,   25,    3,   33,   33,   33,   33,   33,
       33,   33,   33,   33,   33,   33,   33,   33,   33,   33,
       33,   33,   33,   33,   33
    } ;

static const short int yy_chk[76] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        7,   21,   23,   36,   27,   25,   24,   30,   31,   15,
       14,   11,   32,    7,   21,   23,    7,   21,   23,   24,
       30,   31,   24,   30,   31,   32,    8,    3,   32,   34,
       34,   34,   35,   35,   33,   33,   33,   33,   33,   33,
       33,   33,   33,   33,   33,   33,   33,   33,   33,   33,
       33,   33,   33,   33,   33
    } ;

static yy_state_type yy_last_accepting_state;
static YY_CHAR *yy_last_accepting_cpos;

/* the intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed
 */
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0

/* these variables are all declared out here so that section 3 code can
 * manipulate them
 */
/* points to current character in buffer */
static YY_CHAR *yy_c_buf_p = (YY_CHAR *) 0;
static int yy_init = 1;     /* whether we need to initialize */
static int yy_start = 0;    /* start state number */

/* flag which is used to allow yywrap()'s to do buffer switches
 * instead of setting up a fresh yyin.  A bit of a hack ...
 */
static int yy_did_buffer_switch_on_eof;

static yy_state_type yy_get_previous_state YY_PROTO(( void ));
static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
static int yy_get_next_buffer YY_PROTO(( void ));
static void yyunput YY_PROTO(( YY_CHAR c, YY_CHAR *buf_ptr ));
void yyrestart YY_PROTO(( FILE *input_file ));
void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));

#define yy_new_buffer yy_create_buffer

#ifdef __cplusplus
  static int yyinput YY_PROTO(( void ));
#else
  static int input YY_PROTO(( void ));
#endif

YY_DECL
    {
    register yy_state_type yy_current_state;
    register YY_CHAR *yy_cp, *yy_bp;
    register int yy_act;




    if ( yy_init )
    {
        YY_USER_INIT;

        if ( ! yy_start )
            yy_start = 1; /* first start state */

        if ( ! yyin )
            yyin = stdin;

        if ( ! yyout )
            yyout = stdout;

        if ( yy_current_buffer )
            yy_init_buffer( yy_current_buffer, yyin );
        else
            yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE );

        yy_load_buffer_state();

        yy_init = 0;
    }

#if !defined(__VISAGECPP__)
    while ( 1 ) /* loops until end-of-file is reached */
#else
    os2var = 1;
    if (os2var == 0) return 0;
    while ( os2var == 1 )   /* loops until end-of-file is reached */
#endif
    {
        yy_cp = yy_c_buf_p;

        /* support of yytext */
        *yy_cp = yy_hold_char;

        /* yy_bp points to the position in yy_ch_buf of the start of the
         * current run.
         */
        yy_bp = yy_cp;

        yy_current_state = yy_start;
yy_match:
        do
        {
            register YY_CHAR yy_c = yy_ec[*yy_cp];
            if ( yy_accept[yy_current_state] )
            {
                yy_last_accepting_state = yy_current_state;
                yy_last_accepting_cpos = yy_cp;
            }
            while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
            {
                yy_current_state = yy_def[yy_current_state];
                if ( yy_current_state >= 34 )
                    yy_c = yy_meta[yy_c];
            }
            yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
            ++yy_cp;
        }
        while ( yy_current_state != 33 );
        yy_cp = yy_last_accepting_cpos;
        yy_current_state = yy_last_accepting_state;

yy_find_action:
        yy_act = yy_accept[yy_current_state];

        YY_DO_BEFORE_ACTION;
        YY_USER_ACTION;

do_action: /* this label is used only to access EOF actions */


        switch ( yy_act )
        {
            case 0: /* must backtrack */
            {
                /* undo the effects of YY_DO_BEFORE_ACTION */
                *yy_cp = yy_hold_char;
                yy_cp = yy_last_accepting_cpos;
                yy_current_state = yy_last_accepting_state;
                goto yy_find_action;
            }

            case 1:
            {
                yylval.s = strdup((const char*) yytext);
                return INTEGER;
            }

            case 2:
            {
                return EXP;
            }

            case 3:
            {
                yylval.s = strdup((const char*) yytext);
                return WORD;
            }

            case 4:
            {
                int len = strlen((const char*) yytext);
                yytext[len-1] = 0;
                yylval.s = strdup((const char*) (yytext+1));
                return WORD;
            }

            case 5:
            {
                yylval.s = strdup((const char*) yytext);
                return STRING;
            }

            case 6:
            {
                return OPEN;
            }

            case 7:
            {
                return CLOSE;
            }

            case 8:
            {
                return COMMA;
            }

            case 9:
            {
                return OPEN_SQUARE;
            }

            case 10:
            {
                return CLOSE_SQUARE;
            }

            case 11:
            {
                return EQUALS;
            }

            case 12:
            {
                return PERIOD;
            }

            case 13:
            {
                break;
            }

            case 14:
            {
                break;
            }

            case 15:
            {
            loop:
#ifdef __cplusplus
                while (yyinput() != '*') ;
                switch (yyinput())
#else
                while (input() != '*') ;
                switch (input())
#endif
                {
                    case '/':
                        break;
                    case '*':
                        unput('*');
                    default:
                        goto loop;
                }
                break;
            }

            case 16:
            {
                return ERROR;
            }

            case 17:
            {
                ECHO;
                break;
            }

            case YY_STATE_EOF(INITIAL):
            {
                yyterminate();
            }

            case YY_END_OF_BUFFER:
            {
                /* amount of text matched not including the EOB char */
                int yy_amount_of_matched_text = yy_cp - yytext - 1;

                /* undo the effects of YY_DO_BEFORE_ACTION */
                *yy_cp = yy_hold_char;

                /* note that here we test for yy_c_buf_p "<=" to the position
                 * of the first EOB in the buffer, since yy_c_buf_p will
                 * already have been incremented past the NUL character
                 * (since all states make transitions on EOB to the end-
                 * of-buffer state).  Contrast this with the test in yyinput().
                 */
                if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
                /* this was really a NUL */
                {
                    yy_state_type yy_next_state;

                    yy_c_buf_p = yytext + yy_amount_of_matched_text;

                    yy_current_state = yy_get_previous_state();

                    /* okay, we're now positioned to make the
                     * NUL transition.  We couldn't have
                     * yy_get_previous_state() go ahead and do it
                     * for us because it doesn't know how to deal
                     * with the possibility of jamming (and we
                     * don't want to build jamming into it because
                     * then it will run more slowly)
                     */

                    yy_next_state = yy_try_NUL_trans( yy_current_state );

                    yy_bp = yytext + YY_MORE_ADJ;

                    if ( yy_next_state )
                    {
                        /* consume the NUL */
                        yy_cp = ++yy_c_buf_p;
                        yy_current_state = yy_next_state;
                        goto yy_match;
                    }
                    else
                    {
                        yy_cp = yy_last_accepting_cpos;
                        yy_current_state = yy_last_accepting_state;
                        goto yy_find_action;
                    }
                }
                else switch ( yy_get_next_buffer() )
                {
                    case EOB_ACT_END_OF_FILE:
                    {
                        yy_did_buffer_switch_on_eof = 0;

                        if ( yywrap() )
                        {
                            /* note: because we've taken care in
                             * yy_get_next_buffer() to have set up yytext,
                             * we can now set up yy_c_buf_p so that if some
                             * total hoser (like flex itself) wants
                             * to call the scanner after we return the
                             * YY_NULL, it'll still work - another YY_NULL
                             * will get returned.
                             */
                            yy_c_buf_p = yytext + YY_MORE_ADJ;

                            yy_act = YY_STATE_EOF((yy_start - 1) / 2);
                            goto do_action;
                        }
                        else
                        {
                            if ( ! yy_did_buffer_switch_on_eof )
                                YY_NEW_FILE;
                        }
                    }
                    break;

                    case EOB_ACT_CONTINUE_SCAN:
                        yy_c_buf_p = yytext + yy_amount_of_matched_text;

                        yy_current_state = yy_get_previous_state();

                        yy_cp = yy_c_buf_p;
                        yy_bp = yytext + YY_MORE_ADJ;
                        goto yy_match;

                    case EOB_ACT_LAST_MATCH:
                        yy_c_buf_p = &yy_current_buffer->yy_ch_buf[yy_n_chars];

                        yy_current_state = yy_get_previous_state();

                        yy_cp = yy_c_buf_p;
                        yy_bp = yytext + YY_MORE_ADJ;
                        goto yy_find_action;
                }
            }
            break;

            default:
#ifdef FLEX_DEBUG
                printf( "action # %d\n", yy_act );
#endif
                YY_FATAL_ERROR("fatal flex scanner internal error--no action found" );
        }
    }

#if defined(__VISAGECPP__)
    /* VA complains about proc maybe not returning a value so return one */
    return 0;
#endif
}


/* yy_get_next_buffer - try to read in a new buffer
 *
 * synopsis
 *     int yy_get_next_buffer();
 *
 * returns a code representing an action
 *     EOB_ACT_LAST_MATCH -
 *     EOB_ACT_CONTINUE_SCAN - continue scanning from current position
 *     EOB_ACT_END_OF_FILE - end of file
 */

static int yy_get_next_buffer()
{
    register YY_CHAR *dest = yy_current_buffer->yy_ch_buf;
    register YY_CHAR *source = yytext - 1; /* copy prev. char, too */
    register int number_to_move, i;
    int ret_val;

    if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] )
        YY_FATAL_ERROR( "fatal flex scanner internal error--end of buffer missed" );

    /* try to read more data */

    /* first move last chars to start of buffer */
    number_to_move = yy_c_buf_p - yytext;

    for ( i = 0; i < number_to_move; ++i )
        *(dest++) = *(source++);

    if ( yy_current_buffer->yy_eof_status != EOF_NOT_SEEN )
        /* don't do the read, it's not guaranteed to return an EOF,
         * just force an EOF
         */
        yy_n_chars = 0;

    else
    {
        int num_to_read = yy_current_buffer->yy_buf_size - number_to_move - 1;

        if ( num_to_read > YY_READ_BUF_SIZE )
            num_to_read = YY_READ_BUF_SIZE;

        else if ( num_to_read <= 0 )
            YY_FATAL_ERROR( "fatal error - scanner input buffer overflow" );

        /* read in more data */
        YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]),
            yy_n_chars, num_to_read );
    }