lex_var.h revision 145519 
1/*	$FreeBSD: head/contrib/ipfilter/tools/lex_var.h 145519 2005-04-25 18:20:15Z darrenr $	*/
2
3
4extern	long		string_start;
5extern	long		string_end;
6extern	char		*string_val;
7extern	long		pos;
8
9#define YY_INPUT(buf, result, max_size) \
10	if (pos >= string_start && pos <= string_end) { \
11		buf[0] = string_val[pos - string_start]; \
12		pos++; \
13		result = 1; \
14	} else if ( yy_current_buffer->yy_is_interactive ) \
15		{ \
16		int c = '*', n; \
17		for ( n = 0; n < 1 && \
18			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
19			buf[n] = (char) c; \
20		if ( c == '\n' ) \
21			buf[n++] = (char) c; \
22		if ( c == EOF && ferror( yyin ) ) \
23			YY_FATAL_ERROR( "input in flex scanner failed" ); \
24		result = n; \
25		pos++; \
26		} \
27	else if ( ((result = fread( buf, 1, 1, yyin )) == 0) \
28		  && ferror( yyin ) ) \
29		YY_FATAL_ERROR( "input in flex scanner failed" );
30
31#ifdef input
32# undef input
33# define input() (((pos >= string_start) && (pos < string_end)) ? \
34		  yysptr = yysbuf, string_val[pos++ - string_start] : \
35		  ((yytchar = yysptr > yysbuf ? U(*--yysptr) : \
36		   getc(yyin)) == 10 ? (pos++, yylineno++, yytchar) : \
37		  yytchar) == EOF ? (pos++, 0) : (pos++, yytchar))
38#endif
39
40#ifdef lex_input
41# undef lex_input
42# define lex_input() (((pos >= string_start) && (pos < string_end)) ? \
43		  yysptr = yysbuf, string_val[pos++ - string_start] : \
44		  ((yytchar = yysptr > yysbuf ? U(*--yysptr) : \
45		   getc(yyin)) == 10 ? (pos++, yylineno++, yytchar) : \
46		  yytchar) == EOF ? (pos++, 0) : (pos++, yytchar))
47#endif
48
49#ifdef unput
50# undef unput
51# define unput(c) { if (pos > 0) pos--; \
52		    yytchar = (c); if (yytchar == '\n') yylineno--; \
53		    *yysptr++ = yytchar; }
54#endif
55
56