flex.c

Linux下VB解释器

#ifndef YY_NO_TOP_STATE
static int yy_top_state YY_PROTO ((void));
#endif

#else
#define YY_NO_PUSH_STATE 1
#define YY_NO_POP_STATE 1
#define YY_NO_TOP_STATE 1
#endif

#ifdef YY_MALLOC_DECL
YY_MALLOC_DECL
#else
#if __STDC__
#ifndef __cplusplus
#include <stdlib.h>
#endif
#else
/* Just try to get by without declaring the routines.  This will fail
 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
 * or sizeof(void*) != sizeof(int).
 */
#endif
#endif

/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif

/* Copy whatever the last rule matched to the standard output. */

#ifndef ECHO
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
#endif

/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#ifndef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
	if ( yy_current_buffer->yy_is_interactive ) \
		{ \
		int c = '*', n; \
		for ( n = 0; n < max_size && \
			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
			buf[n] = (char) c; \
		if ( c == '\n' ) \
			buf[n++] = (char) c; \
		if ( c == EOF && ferror( yyin ) ) \
			YY_FATAL_ERROR( "input in flex scanner failed" ); \
		result = n; \
		} \
	else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
		  && ferror( yyin ) ) \
		YY_FATAL_ERROR( "input in flex scanner failed" );
#endif

/* No semi-colon after return; correct usage is to write "yyterminate();" -
 * we don't want an extra ';' after the "return" because that will cause
 * some compilers to complain about unreachable statements.
 */
#ifndef yyterminate
#define yyterminate() return YY_NULL
#endif

/* Number of entries by which start-condition stack grows. */
#ifndef YY_START_STACK_INCR
#define YY_START_STACK_INCR 25
#endif

/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
#endif

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL int yylex YY_PROTO(( void ))
#endif

/* Code executed at the beginning of each rule, after yytext and yyleng
 * have been set up.
 */
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif

/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK break;
#endif

#define YY_RULE_SETUP \
	if ( yyleng > 0 ) \
		yy_current_buffer->yy_at_bol = \
				(yytext[yyleng - 1] == '\n'); \
	YY_USER_ACTION

YY_DECL
{
  register yy_state_type yy_current_state;
  register char *yy_cp = NULL, *yy_bp = NULL;
  register int yy_act;



  if (yy_init)
    {
      yy_init = 0;

#ifdef YY_USER_INIT
      YY_USER_INIT;
#endif

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

      if (!yyin)
	yyin = stdin;

      if (!yyout)
	yyout = stdout;

      if (!yy_current_buffer)
	yy_current_buffer = yy_create_buffer (yyin, YY_BUF_SIZE);

      yy_load_buffer_state ();
    }

  while (1)			/* loops until end-of-file is reached */
    {
      yy_more_len = 0;
      if (yy_more_flag)
	{
	  yy_more_len = yy_c_buf_p - yytext_ptr;
	  yy_more_flag = 0;
	}
      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_current_state += YY_AT_BOL ();
      yy_state_ptr = yy_state_buf;
      *yy_state_ptr++ = yy_current_state;
    yy_match:
      do
	{
	  register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI (*yy_cp)];
	  while (yy_chk[yy_base[yy_current_state] + yy_c] !=
		 yy_current_state)
	    {
	      yy_current_state = (int) yy_def[yy_current_state];
	      if (yy_current_state >= 668)
		yy_c = yy_meta[(unsigned int) yy_c];
	    }
	  yy_current_state =
	      yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
	  *yy_state_ptr++ = yy_current_state;
	  ++yy_cp;
	}
      while (yy_base[yy_current_state] != 1950);

    yy_find_action:
      yy_current_state = *--yy_state_ptr;
      yy_lp = yy_accept[yy_current_state];
    find_rule:			/* we branch to this label when backing up */
      for (;;)			/* until we find what rule we matched */
	{
	  if (yy_lp && yy_lp < yy_accept[yy_current_state + 1])
	    {
	      yy_act = yy_acclist[yy_lp];
	      if (yy_act & YY_TRAILING_HEAD_MASK ||
		  yy_looking_for_trail_begin)
		{
		  if (yy_act == yy_looking_for_trail_begin)
		    {
		      yy_looking_for_trail_begin = 0;
		      yy_act &= ~YY_TRAILING_HEAD_MASK;
		      break;
		    }
		}
	      else if (yy_act & YY_TRAILING_MASK)
		{
		  yy_looking_for_trail_begin = yy_act & ~YY_TRAILING_MASK;
		  yy_looking_for_trail_begin |= YY_TRAILING_HEAD_MASK;
		}
	      else
		{
		  yy_full_match = yy_cp;
		  yy_full_state = yy_state_ptr;
		  yy_full_lp = yy_lp;
		  break;
		}
	      ++yy_lp;
	      goto find_rule;
	    }
	  --yy_cp;
	  yy_current_state = *--yy_state_ptr;
	  yy_lp = yy_accept[yy_current_state];
	}

      YY_DO_BEFORE_ACTION;


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


      switch (yy_act)
	{			/* beginning of action switch */
	case YY_STATE_EOF (INITIAL):
	case YY_STATE_EOF (PRELNO):
	case YY_STATE_EOF (PASTLNO):
	case YY_STATE_EOF (IMPORT):
	case YY_STATE_EOF (IMPORT_DONE):
	  {
	    if (--include_stack_ptr < 0)
	      {
		return tEOPROG;
	      }
	    else
	      {
		if (!is_bound)
		  {
		    yy_delete_buffer (YY_CURRENT_BUFFER);
		    yy_switch_to_buffer (include_stack[include_stack_ptr]);
		  }
		flex_line += yylval.sep = -1;
		return tSEP;
	      }
	  }
	YY_BREAK case 1:
	  YY_RULE_SETUP
	  {
	    BEGIN (INITIAL);
	  }			/* ignore whitespace */
	YY_BREAK case 2:
	  YY_RULE_SETUP
	  {
	    BEGIN (PRELNO);
	    return tLABEL;
	  }
	YY_BREAK case 3:
	  YY_RULE_SETUP
	  {
	    BEGIN (PASTLNO);
	    yylval.symbol = (char *) my_strdup (yytext);
	    return tSYMBOL;
	  }
	YY_BREAK case 4:
	  YY_RULE_SETUP
	  {
	    BEGIN (INITIAL);
	    flex_line += yylval.sep = 0;
	    yyless (0);
	    return tSEP;
	  }
	YY_BREAK case 5:
	  YY_RULE_SETUP
	  {
	    if (fi_pending)
	      {
		fi_pending--;
		yyless (0);
		return tENDIF;
	      }
	    BEGIN (INITIAL);
	    flex_line += yylval.sep = 1;
	    return tSEP;
	  }
	YY_BREAK case 6:
	  YY_RULE_SETUP
	  {
	    if (fi_pending)
	      {
		fi_pending--;
		yyless (0);
		return tENDIF;
	      }
	    if (interactive && !inlib)
	      {
		return tEOPROG;
	      }
	    else
	      {
		flex_line += yylval.sep = 2;
		return tSEP;
	      }
	  }
	YY_BREAK case 7:
	  YY_RULE_SETUP
	  {
	    if (fi_pending)
	      {
		fi_pending--;
		yyless (0);
		return tENDIF;
	      }
	    flex_line += yylval.sep = 1;
	    return tSEP;
	  }
	YY_BREAK case 8:
	  YY_RULE_SETUP
	  {
	    if (fi_pending && check_compat)
	      error_with_line (WARNING,
			       "short-if has changed in version 2.71",
			       flex_line);
	    flex_line += yylval.sep = 0;
	    return tSEP;
	  }
	YY_BREAK case 9:
	  YY_RULE_SETUP
	  {
	    flex_line += yylval.sep = 0;
	    return tSEP;
	  }			/* comments span 'til end of line */
	YY_BREAK case 10:
	  YY_RULE_SETUP
	  {
	    flex_line += yylval.sep = 0;
	    return tSEP;
	  }			/* comments span 'til end of line */
	YY_BREAK case 11:
	  YY_RULE_SETUP
	  {
	    if (fi_pending)
	      {
		fi_pending--;
		yyless (0);
		return tENDIF;
	      }
	    flex_line += yylval.sep = 1;
	    return tSEP;
	  }
	YY_BREAK case 12:
	  YY_RULE_SETUP
	  {
	    yymore ();
	  }
	YY_BREAK case 13:
	  YY_RULE_SETUP
	  {
	    BEGIN (IMPORT);
	  }
	YY_BREAK case 14:
	  YY_RULE_SETUP
	  {
	    if (!import_lib (yytext))
	      return 0;
	    BEGIN (IMPORT_DONE);
	    return tIMPORT;
	  }
	YY_BREAK case 15:
	  YY_RULE_SETUP
	  {
	    if (yytext[0] == '\n' && fi_pending)
	      {
		fi_pending--;
		yyless (0);
		return tENDIF;
	      }
	    BEGIN (INITIAL);
	    yyless (0);
	    flex_line += yylval.sep = 0;
	    return tSEP;
	  }
	YY_BREAK case 16:
	  YY_RULE_SETUP
	  {
	    char *where = strpbrk (yytext, " \t\r\f\v");
	    yylval.docu = (char *) my_strdup (where ? where + 1 : NULL);
	    return tDOCU;
	  }
	YY_BREAK case 17:
	  YY_RULE_SETUP
	  {
	    flex_line += yylval.sep = 1;
	    return tSEP;
	  }			/* '#' as first character may introduce comments too */
	YY_BREAK case 18:
	  YY_RULE_SETUP
	  {
	    flex_line += yylval.sep = 1;
	    return tSEP;
	  }			/* ' as first character may introduce comments too */
	YY_BREAK case 19:
	  YY_RULE_SETUP return tEXECUTE;
	YY_BREAK case 20:
	  YY_RULE_SETUP return tEXECUTE2;
	YY_BREAK case 21:
	  YY_RULE_SETUP return tCOMPILE;
	YY_BREAK case 22:
	  YY_RULE_SETUP return tRUNTIME_CREATED_SUB;
	YY_BREAK case 23:
	  YY_RULE_SETUP return tENDSUB;