Info Catalog flex: Reentrant Overview flex: Reentrant flex: Reentrant Detail

flex: Reentrant Example

 
 19.3 Reentrant Example
 ======================
 
 First, an example of a reentrant scanner:
          /* This scanner prints "//" comments. */
      
          %option reentrant stack noyywrap
          %x COMMENT
      
          %%
      
          "//"                 yy_push_state( COMMENT, yyscanner);
          .|\n
      
          <COMMENT>\n          yy_pop_state( yyscanner );
          <COMMENT>[^\n]+      fprintf( yyout, "%s\n", yytext);
      
          %%
      
          int main ( int argc, char * argv[] )
          {
              yyscan_t scanner;
      
              yylex_init ( &scanner );
              yylex ( scanner );
              yylex_destroy ( scanner );
          return 0;
         }
 

Info Catalog flex: Reentrant Overview flex: Reentrant flex: Reentrant Detail