// Add a new token to the list
public void AddToken(MathToken tokenToAdd)
{
if (TokenList == null)
{
TokenList = new List <MathToken>();
TokenList.Add(tokenToAdd);
}
else
{
//check if the token is the same type as last token
var a = tokenToAdd is OperatorToken;
var b = TokenList[TokenList.Count - 1] is OperatorToken;
//the tokens are different
if (a != b)
{
//add new token
TokenList.Add(tokenToAdd);
}
else
{
//replace last token
TokenList[TokenList.Count - 1] = tokenToAdd;
}
}
}
public bool validate()
{
if (TokenList == null)
{
return(false);
}
for (int i = 0; i < TokenList.Count - 1; i++)
{
MathToken currenttoken = TokenList[i];
if (currenttoken is OperatorToken)
{
if ((currenttoken is DivisionToken | currenttoken is ModuloToken) & TokenList[i + 1].GetResult().rawValue == 0)
{
return(false);
}
}
}
return(true);
}
public void build(MathToken left, MathToken right = null)
{
this.left = left;
this.right = right;
}
