Is my recursive decent parse correct?

[dragstang86]

I am trying to get a better grasp of recursive decent parsing and wanted to make sure this would be correct.

<repeat_statement> -> REPEAT<statement>UNTIL<expression>;

boolean parseRepeatStatement(){

   if(token == REPEAT){
      token = getNextToken();

      if(parseStatement()){
         if(token == UNTIL){
            token = getNextToken();

            if(parseExpression()){
               if(token == ';')
                  return true;
            }
         }
      }
   }
   return false;

}

[JosAH]

It looks almost fine to me: if the getNextToken() method removes the current token from the input stream. why don't you call that method after it has seen that semi colon and just before your code returns true? Otherwise you have to explain what your code does exactly ...

kind regards,

Jos

[dragstang86]

I understand what you are saying. Thanks for the help