Beispiel #1
0
int main (int argc, char **argv) {
   program_name = basename (argv[0]);
   scan_options (argc, argv);
   stack *stack = new_stack ();
   bool quit = false;
   yy_flex_debug = false;
   while (! quit) {
      int token = yylex();
      if (token == YYEOF) break;
      switch (token) {
         case NUMBER: do_push (stack, yytext); break;
         case '+': do_binop (stack, add_bigint); break;
         case '-': do_binop (stack, sub_bigint); break;
         case '*': do_binop (stack, mul_bigint); break;
         case 'c': do_clear (stack); break;
         case 'f': do_print_all (stack); break;
         case 'p': do_print (stack); break;
         case 'q': quit = true; break;
         default: unimplemented (token); break;
      }
   }
   yycleanup();
   DEBUGF ('m', "EXIT %d\n", exit_status);
   do_clear(stack);
   free_stack(stack);
   return EXIT_SUCCESS;
}
Beispiel #2
0
int main (int argc, char **argv) {
   program_name = basename (argv[0]);
   scan_options (argc, argv);
   stack *stack = new_stack ();
   token *scanner = new_token (stdin);
   for (;;) {
      int token = scan_token (scanner);
      if (token == EOF) break;
      switch (token) {
         case NUMBER: do_push (stack, peek_token (scanner)); break;
         case '+': do_binop (stack, add_bigint); break;
         case '-': do_binop (stack, sub_bigint); break;
         case '*': do_binop (stack, mul_bigint); break;
         case 'c': do_clear (stack); break;
         case 'f': do_print_all (stack); break;
         case 'p': do_print (stack); break;
         default: unimplemented (token); break;
      }
   }
   
   do_clear(stack);
   free_stack(stack);
   free_token(scanner);
   DEBUGF ('m', "EXIT %d\n", exit_status);
   return EXIT_SUCCESS;
}