private Node GetTerm()
{
Node left = GetFactor();
if (GetRemainingTokenCount() == 0)
{
return(left);
}
OperatorNode operatorNode;
switch (GetTokenType())
{
case Token.Plus:
operatorNode = new OperatorNode(Operator.Plus);
break;
case Token.Minus:
operatorNode = new OperatorNode(Operator.Minus);
break;
case Token.In:
case Token.ClosingParenthesis:
return(left);
default:
throw new ASTException("Expected plus or minus, in or closing parenthesis, got " + GetTokenType());
}
ConsumeTokens(1);
operatorNode.Left = left;
operatorNode.Right = GetTerm();
return(operatorNode);
}
void Woodification(TempNode node, ref int i, OperatorsType operatorsType)
{
if (node.Datas.Count > i + 1)
{
OperatorNode operatorNode = new OperatorNode();
operatorNode.ThisOperatorsType = operatorsType;
if (node.Datas[i + 1].Data == "-" || node.Datas[i + 1].Data == "+")
{
node.Datas[i + 1].Data = node.Datas[i + 1].Data + node.Datas[i + 2].Data;
node.Datas.RemoveAt(i + 2);
}
operatorNode.LeftSide = node.Datas[i - 1];
operatorNode.RightSide = node.Datas[i + 1];
for (int j = i - 1; j <= i + 1; j++)
{
node.Datas.RemoveAt(i - 1);
}
node.Datas.Insert(i - 1, operatorNode);
i--;
}
else
{
node.Datas.RemoveAt(i);
i--;
}
}
private Node GetFactor()
{
Node left = GetUnary();
if (GetRemainingTokenCount() == 0)
{
return(left);
}
OperatorNode operatorNode;
switch (GetTokenType())
{
case Token.Star:
operatorNode = new OperatorNode(Operator.Star);
break;
case Token.Slash:
operatorNode = new OperatorNode(Operator.Slash);
break;
default:
return(left);
}
ConsumeTokens(1);
operatorNode.Left = left;
operatorNode.Right = GetFactor();
return(operatorNode);
}
public ExpressionNode(OperatorNode oper, ReducibleNode left, ReducibleNode right, int nextIndex) : base(nextIndex)
{
this.Operator = oper;
this.Left = left;
this.Right = right;
}