/// <summary>
/// Evaluates the Expression
/// </summary>
public override int Eval(MyIDictionary tbl, MyIHeap heap)
{
int leftOp = mExp1.Eval(tbl, heap);
int rightOp = mExp2.Eval(tbl, heap);
switch (mOp)
{
case "+":
return(leftOp + rightOp);
case "-":
return(leftOp - rightOp);
case "*":
return(leftOp * rightOp);
case "/":
if (rightOp == 0)
{
throw new MyDivisionByZeroException("Division by zero");
}
else
{
return(leftOp / rightOp);
}
default:
return(0);
}
}
//Evaluates the exp
public override int Eval(MyIDictionary tbl, MyIHeap heap)
{
return(tbl.Lookup(mId));
}
// Evaluates the exp
public override int Eval(MyIDictionary tbl, MyIHeap heap)
{
return(mNumber);
}
//Evaluates the Exp public abstract int Eval(MyIDictionary tbl, MyIHeap heap);