IEXPR ParseAtrithExpr(IEXPR exp)
{
Queue<IEXPR> que = new Queue<IEXPR>();
Stack<IEXPR> ops = new Stack<IEXPR>();
bool isop = true;
int sub = 0;
if (exp != null)
{
que.Enqueue(exp);
i++;
}
if (Current.val.ToString() == "(")
{
i++;
}
while (true)
{
if (Current.val.ToString() == "+")
{
ArithPushStack(que, ops, new Add());
isop = true;
}
else if (Current.val.ToString() == "-")
{
ArithPushStack(que, ops, new Sub());
isop = true;
}
else if (Current.val.ToString() == "*")
{
ArithPushStack(que, ops, new Mul());
isop = true;
}
else if (Current.val.ToString() == "/")
{
ArithPushStack(que, ops, new Div());
isop = true;
}
else if (Current.val.ToString() == "%")
{
ArithPushStack(que, ops, new Mod());
isop = true;
}
else if (Current.val.ToString() == "(")
{
ArithPushStack(que, ops, new OpenSub());
sub++;
}
else if (Current.val.ToString() == ")")
{
if (sub < 0)
{
i++;
i++;
break;
}
else
{
ArithPushStack(que, ops, new CloseSub());
sub--;
}
}
else if (Current.val.ToString() == "<")
{
ArithPushStack(que, ops, new CompareLess());
isop = true;
}
else if (Current.val.ToString() == "=")
{
ArithPushStack(que, ops, new CompareEqu());
isop = true;
}
else if (Current.val.ToString() == ">")
{
ArithPushStack(que, ops, new CompareGrt());
isop = true;
}
else
{
if (isop == false)
{
i--;
break;
}
else
{
IEXPR ex = ParseExpr(true);
que.Enqueue(ex);
isop = false;
}
}
i++;
}
while (ops.Count > 0)
{
que.Enqueue(ops.Pop());
}
AritemeticExpr e = new AritemeticExpr();
e.code = que.ToArray();
return e;
}
IEXPR ParseAtrithExpr(IEXPR exp)
{
Queue <IEXPR> que = new Queue <IEXPR>();
Stack <IEXPR> ops = new Stack <IEXPR>();
bool isop = true;
int sub = 0;
if (exp != null)
{
que.Enqueue(exp);
i++;
}
if (Current.val.ToString() == "(")
{
i++;
}
while (true)
{
if (Current.val.ToString() == "+")
{
ArithPushStack(que, ops, new Add());
isop = true;
}
else if (Current.val.ToString() == "-")
{
ArithPushStack(que, ops, new Sub());
isop = true;
}
else if (Current.val.ToString() == "*")
{
ArithPushStack(que, ops, new Mul());
isop = true;
}
else if (Current.val.ToString() == "/")
{
ArithPushStack(que, ops, new Div());
isop = true;
}
else if (Current.val.ToString() == "%")
{
ArithPushStack(que, ops, new Mod());
isop = true;
}
else if (Current.val.ToString() == "(")
{
ArithPushStack(que, ops, new OpenSub());
sub++;
}
else if (Current.val.ToString() == ")")
{
if (sub < 0)
{
i++;
i++;
break;
}
else
{
ArithPushStack(que, ops, new CloseSub());
sub--;
}
}
else if (Current.val.ToString() == "<")
{
ArithPushStack(que, ops, new CompareLess());
isop = true;
}
else if (Current.val.ToString() == "=")
{
ArithPushStack(que, ops, new CompareEqu());
isop = true;
}
else if (Current.val.ToString() == ">")
{
ArithPushStack(que, ops, new CompareGrt());
isop = true;
}
else
{
if (isop == false)
{
i--;
break;
}
else
{
IEXPR ex = ParseExpr(true);
que.Enqueue(ex);
isop = false;
}
}
i++;
}
while (ops.Count > 0)
{
que.Enqueue(ops.Pop());
}
AritemeticExpr e = new AritemeticExpr();
e.code = que.ToArray();
return(e);
}