コード例 #1
0
  @Override
  public LLNode<Token> compile(LLNode<Token> currentToken) throws Exception {
    // ( x + 3 )

    currentToken = currentToken.getNext(); // voorbij haakje
    Token leftToken = currentToken.getValue();
    String leftName = leftToken.getValue();
    currentToken = currentToken.getNext();
    Token operatorToken = currentToken.getValue();
    currentToken = currentToken.getNext();
    Token rightToken = currentToken.getValue();
    String rightName = rightToken.getValue();

    if (leftToken.getType() != Token.Soort.IDENTIFIER) {
      leftName = getNextUniqueId();
      compiled.insertLast(new DirectFunctionCall("ConstantToReturn", leftToken.getValue()));
      compiled.insertLast(new DirectFunctionCall("ReturnToVariable", leftName));
    }
    if (rightToken.getType() != Token.Soort.IDENTIFIER) {
      rightName = getNextUniqueId();
      compiled.insertLast(new DirectFunctionCall("ConstantToReturn", rightToken.getValue()));
      compiled.insertLast(new DirectFunctionCall("ReturnToVariable", rightName));
    }

    switch (operatorToken.getType()) {
      case PLUS:
        compiled.insertLast(new FunctionCall("Add", new String[] {leftName, rightName}));
        break;
      case MINUS:
        compiled.insertLast(new FunctionCall("Subtract", new String[] {leftName, rightName}));
        break;
      case MULTIPLY:
        compiled.insertLast(new FunctionCall("Multiply", new String[] {leftName, rightName}));
        break;
      case DIVIDE:
        compiled.insertLast(new FunctionCall("Divide", new String[] {leftName, rightName}));
        break;
      default:
        break;
    }

    currentToken = currentToken.getNext();
    if (currentToken.getValue().getType() != Token.Soort.ELLIPSIS_CLOSE) {
      throw new Exception();
    }

    return currentToken.getNext();
  }
コード例 #2
0
 @Override
 public boolean isMatch(LLNode<Token> token) {
   return token.getValue().getType() == Token.Soort.ELLIPSIS_OPEN;
 }