usr/src/cmd/ipf/tools/lex_var.h

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