doslex.c

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

    if ( yy_n_chars == 0 )
    {
        if ( number_to_move == 1 )
        {
            ret_val = EOB_ACT_END_OF_FILE;
            yy_current_buffer->yy_eof_status = EOF_DONE;
        }

        else
        {
            ret_val = EOB_ACT_LAST_MATCH;
            yy_current_buffer->yy_eof_status = EOF_PENDING;
        }
    }

    else
        ret_val = EOB_ACT_CONTINUE_SCAN;

    yy_n_chars += number_to_move;
    yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
    yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;

    /* yytext begins at the second character in yy_ch_buf; the first
     * character is the one which preceded it before reading in the latest
     * buffer; it needs to be kept around in case it's a newline, so
     * yy_get_previous_state() will have with '^' rules active
     */

    yytext = &yy_current_buffer->yy_ch_buf[1];

    return ( ret_val );
}


/* yy_get_previous_state - get the state just before the EOB char was reached
 *
 * synopsis
 *     yy_state_type yy_get_previous_state();
 */

static yy_state_type yy_get_previous_state()
{
    register yy_state_type yy_current_state;
    register YY_CHAR *yy_cp;

    yy_current_state = yy_start;

    for ( yy_cp = yytext + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp )
    {
        register YY_CHAR yy_c = (*yy_cp ? yy_ec[*yy_cp] : 1);
        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];
    }

    return ( yy_current_state );
}


/* yy_try_NUL_trans - try to make a transition on the NUL character
 *
 * synopsis
 *     next_state = yy_try_NUL_trans( current_state );
 */

#ifdef YY_USE_PROTOS
static yy_state_type yy_try_NUL_trans( register yy_state_type yy_current_state )
#else
static yy_state_type yy_try_NUL_trans( yy_current_state )
register yy_state_type yy_current_state;
#endif
{
    register int yy_is_jam;
    register YY_CHAR *yy_cp = yy_c_buf_p;

    register YY_CHAR yy_c = 1;
    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_is_jam = (yy_current_state == 33);

    return ( yy_is_jam ? 0 : yy_current_state );
}


#ifdef YY_USE_PROTOS
static void yyunput( YY_CHAR c, register YY_CHAR *yy_bp )
#else
static void yyunput( c, yy_bp )
YY_CHAR c;
register YY_CHAR *yy_bp;
#endif
{
    register YY_CHAR *yy_cp = yy_c_buf_p;

    /* undo effects of setting up yytext */
    *yy_cp = yy_hold_char;

    if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
    { /* need to shift things up to make room */
        register int number_to_move = yy_n_chars + 2; /* +2 for EOB chars */
        register YY_CHAR *dest =
            &yy_current_buffer->yy_ch_buf[yy_current_buffer->yy_buf_size + 2];
        register YY_CHAR *source =
            &yy_current_buffer->yy_ch_buf[number_to_move];

        while ( source > yy_current_buffer->yy_ch_buf )
            *--dest = *--source;

        yy_cp += dest - source;
        yy_bp += dest - source;
        yy_n_chars = yy_current_buffer->yy_buf_size;

        if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
            YY_FATAL_ERROR( "flex scanner push-back overflow" );
    }

    if ( yy_cp > yy_bp && yy_cp[-1] == '\n' )
        yy_cp[-2] = '\n';

    *--yy_cp = c;

    /* note: the formal parameter *must* be called "yy_bp" for this
     *       macro to now work correctly
     */
    YY_DO_BEFORE_ACTION; /* set up yytext again */
}


#ifdef __cplusplus
static int yyinput()
#else
static int input()
#endif
{
    int c;
    YY_CHAR *yy_cp = yy_c_buf_p;

    *yy_cp = yy_hold_char;

    if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
    {
        /* yy_c_buf_p now points to the character we want to return.
         * If this occurs *before* the EOB characters, then it's a
         * valid NUL; if not, then we've hit the end of the buffer.
         */
        if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] )
        { /* this was really a NUL */
           *yy_c_buf_p = '\0';
        }
        else
        { /* need more input */
            yytext = yy_c_buf_p;
            ++yy_c_buf_p;

            switch ( yy_get_next_buffer() )
            {
                case EOB_ACT_END_OF_FILE:
                {
                    if ( yywrap() )
                    {
                        yy_c_buf_p = yytext + YY_MORE_ADJ;
                        return ( EOF );
                    }
                    YY_NEW_FILE;

#ifdef __cplusplus
                    return ( yyinput() );
#else
                    return ( input() );
#endif
                }

                case EOB_ACT_CONTINUE_SCAN:
                    yy_c_buf_p = yytext + YY_MORE_ADJ;
                    break;

                case EOB_ACT_LAST_MATCH:
#ifdef __cplusplus
                    YY_FATAL_ERROR( "unexpected last match in yyinput()" );
#else
                    YY_FATAL_ERROR( "unexpected last match in input()" );
#endif
            }
        }
    }

    c = *yy_c_buf_p;
    yy_hold_char = *++yy_c_buf_p;

    return ( c );
}


#ifdef YY_USE_PROTOS
void yyrestart( FILE *input_file )
#else
void yyrestart( input_file )
FILE *input_file;
#endif
{
    yy_init_buffer( yy_current_buffer, input_file );
    yy_load_buffer_state();
}


#ifdef YY_USE_PROTOS
void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
#else
void yy_switch_to_buffer( new_buffer )
YY_BUFFER_STATE new_buffer;
#endif
{
    if ( yy_current_buffer == new_buffer )
        return;

    if ( yy_current_buffer )
    {
        /* flush out information for old buffer */
        *yy_c_buf_p = yy_hold_char;
        yy_current_buffer->yy_buf_pos = yy_c_buf_p;
        yy_current_buffer->yy_n_chars = yy_n_chars;
    }

    yy_current_buffer = new_buffer;
    yy_load_buffer_state();

    /* we don't actually know whether we did this switch during
     * EOF (yywrap()) processing, but the only time this flag
     * is looked at is after yywrap() is called, so it's safe
     * to go ahead and always set it.
     */
    yy_did_buffer_switch_on_eof = 1;
}


#ifdef YY_USE_PROTOS
void yy_load_buffer_state( void )
#else
void yy_load_buffer_state()
#endif
{
    yy_n_chars = yy_current_buffer->yy_n_chars;
    yytext = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
    yyin = yy_current_buffer->yy_input_file;
    yy_hold_char = *yy_c_buf_p;
}


#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_create_buffer( FILE *file, int size )
#else
YY_BUFFER_STATE yy_create_buffer( file, size )
FILE *file;
int size;
#endif
{
    YY_BUFFER_STATE b;

    b = (YY_BUFFER_STATE) malloc( sizeof( struct yy_buffer_state ) );

    if ( ! b )
        YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );

    b->yy_buf_size = size;

    /* yy_ch_buf has to be 2 characters longer than the size given because
     * we need to put in 2 end-of-buffer characters.
     */
    b->yy_ch_buf = (YY_CHAR *) malloc( (unsigned) (b->yy_buf_size + 2) );

    if ( ! b->yy_ch_buf )
        YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );

    yy_init_buffer( b, file );

    return ( b );
}


#ifdef YY_USE_PROTOS
void yy_delete_buffer( YY_BUFFER_STATE b )
#else
void yy_delete_buffer( b )
YY_BUFFER_STATE b;
#endif
{
    if ( b == yy_current_buffer )
        yy_current_buffer = (YY_BUFFER_STATE) 0;

    free( (char *) b->yy_ch_buf );
    free( (char *) b );
}


#ifdef YY_USE_PROTOS
void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
#else
void yy_init_buffer( b, file )
YY_BUFFER_STATE b;
FILE *file;
#endif
{
    b->yy_input_file = file;

    /* we put in the '\n' and start reading from [1] so that an
     * initial match-at-newline will be true.
     */

    b->yy_ch_buf[0] = '\n';
    b->yy_n_chars = 1;

    /* we always need two end-of-buffer characters.  The first causes
     * a transition to the end-of-buffer state.  The second causes
     * a jam in that state.
     */
    b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
    b->yy_ch_buf[2] = YY_END_OF_BUFFER_CHAR;

    b->yy_buf_pos = &b->yy_ch_buf[1];

    b->yy_eof_status = EOF_NOT_SEEN;
}
/* # line 108 "lexer.l" */



#ifdef FLEX_SCANNER
    static int lex_input()
    {
  return input();
    }
#else /* BSD/AT&T lex */
    #ifndef input
        #error "Sorry, but need either flex or AT&T lex"
    #endif
    static int lex_input() {
  return input();
    }

    /*
    # undef unput
    # define unput(_c) my_unput(_c)
    */

    # undef input
    # define input() my_input()
    static int my_unput(char c)
    {
        if (lex_read_from_string)
        {
    /* Make sure we have something */
            if (lex_string_ptr)
            {
      if (c == '\n') yylineno--;
      lex_string_ptr--;
    }
        }
        else
        {
    yytchar= (c);if(yytchar=='\n')yylineno--;*yysptr++=yytchar;
            /* unput(c); Causes infinite recursion! */
  }
  return c;
    }
#endif

/* Public */
void LexFromFile(FILE *fd)
{
  lex_read_from_string = 0;
  yyin = fd;
  /* Don't know why this is necessary, but otherwise
   * lex only works _once_!
   */
#ifdef FLEX_SCANNER
  yy_init = 1;
#endif
}

void LexFromString(char *buffer)
{
  lex_read_from_string = 1;
  lex_buffer = buffer;
  lex_buffer_length = strlen((const char*) buffer);
  lex_string_ptr = 0;
  /* Don't know why this is necessary, but otherwise
   * lex only works _once_!
   */
#ifdef FLEX_SCANNER
  yy_init = 1;
#endif
}

static int my_input( void )
{
    if (lex_read_from_string)
    {
        if (lex_string_ptr == lex_buffer_length)
        {
            return 0;
        }
        else
        {
            char c = lex_buffer[lex_string_ptr++];
#ifndef FLEX_SCANNER
            if (c == '\n') yylineno++;
#endif
                return c;
        }
    }
    else
    {
        return lex_input();
    }
}

void wxExprCleanUp()
{
    if (yy_current_buffer)
        yy_delete_buffer(yy_current_buffer);
}

#ifdef __VISUALC__
    #pragma warning(pop)
#endif