public override object Process(TreeFunctional treeFunction)
{
MakeReversePolishNotation();
foreach (var token in reversePolishNotation)
{
switch (token.type)
{
case TokenType.NUMERIC_CONST:
case TokenType.VARIABLE:
stack.Push(token);
break;
case TokenType.PLUS:
stack.Push(new TokenNumeric()
{
data = (double)((stack.Pop() as TokenNumeric).data) + (double)((stack.Pop() as TokenNumeric).data)
});
break;
case TokenType.MINUS:
var right = (double)((stack.Pop() as TokenNumeric).data);
var left = (double)((stack.Pop() as TokenNumeric).data);
stack.Push(new TokenNumeric()
{
data = left - right
});
break;
case TokenType.MULTIPLICATION:
stack.Push(new TokenNumeric()
{
data = (double)((stack.Pop() as TokenNumeric).data) * (double)((stack.Pop() as TokenNumeric).data)
});
break;
case TokenType.DIVIDE:
right = (double)((stack.Pop() as TokenNumeric).data);
left = (double)((stack.Pop() as TokenNumeric).data);
stack.Push(new TokenNumeric()
{
data = left / right
});
break;
default:
throw new Exception("something bad in get priority!");
}
}
object data = (stack.Pop() as TokenNumeric).data;
if (tokenToChange != null && treeFunction != null)
{
treeFunction.UpdateVar(tokenToChange.name, data, VariableType.NUMERIC);
}
return(data);
}
public override object Process(TreeFunctional treeFunction)
{
string str = "";
foreach (var token in strings)
{
str += (string)token.data;
}
if (treeFunction != null)
{
treeFunction.UpdateVar(tokenToChange.name, str, VariableType.STRING);
}
return(str);
}
