public static double ToNumber(object arg)
{
if (arg == null)
{
throw new ArgumentNullException();
}
if (arg is BaseIterator || arg is XPathNavigator)
{
arg = XPathFunctions.ToString(arg);
}
if (arg is string)
{
string arg2 = arg as string;
return(XPathFunctions.ToNumber(arg2));
}
if (arg is double)
{
return((double)arg);
}
if (arg is bool)
{
return(Convert.ToDouble((bool)arg));
}
throw new ArgumentException();
}
public override object Evaluate(BaseIterator iter)
{
if (arg0 == null)
{
return(XPathFunctions.ToNumber(iter.Current.Value));
}
return(arg0.EvaluateNumber(iter));
}
public override object Evaluate(BaseIterator iter)
{
XPathNodeIterator xpathNodeIterator = this.arg0.EvaluateNodeSet(iter);
double num = 0.0;
while (xpathNodeIterator.MoveNext())
{
XPathNavigator xpathNavigator = xpathNodeIterator.Current;
num += XPathFunctions.ToNumber(xpathNavigator.Value);
}
return(num);
}
public override object Evaluate(BaseIterator iter)
{
XPathNodeIterator itr = arg0.EvaluateNodeSet(iter);
double sum = 0;
while (itr.MoveNext())
{
sum += XPathFunctions.ToNumber(itr.Current.Value);
}
return(sum);
}
public virtual double EvaluateNumber(BaseIterator iter)
{
XPathResultType xpathResultType = this.GetReturnType(iter);
object obj;
if (xpathResultType == XPathResultType.NodeSet)
{
obj = this.EvaluateString(iter);
xpathResultType = XPathResultType.String;
}
else
{
obj = this.Evaluate(iter);
}
if (xpathResultType == XPathResultType.Any)
{
xpathResultType = Expression.GetReturnType(obj);
}
switch (xpathResultType)
{
case XPathResultType.Number:
if (obj is double)
{
return((double)obj);
}
if (obj is IConvertible)
{
return(((IConvertible)obj).ToDouble(CultureInfo.InvariantCulture));
}
return((double)obj);
case XPathResultType.String:
return(XPathFunctions.ToNumber((string)obj));
case XPathResultType.Boolean:
return((!(bool)obj) ? 0.0 : 1.0);
case XPathResultType.NodeSet:
return(XPathFunctions.ToNumber(this.EvaluateString(iter)));
case XPathResultType.Navigator:
return(XPathFunctions.ToNumber(((XPathNavigator)obj).Value));
default:
throw new XPathException("invalid node type");
}
}
public override bool EvaluateBoolean(BaseIterator iter)
{
XPathResultType xpathResultType = this._left.GetReturnType(iter);
XPathResultType xpathResultType2 = this._right.GetReturnType(iter);
if (xpathResultType == XPathResultType.Any)
{
xpathResultType = Expression.GetReturnType(this._left.Evaluate(iter));
}
if (xpathResultType2 == XPathResultType.Any)
{
xpathResultType2 = Expression.GetReturnType(this._right.Evaluate(iter));
}
if (xpathResultType == XPathResultType.Navigator)
{
xpathResultType = XPathResultType.String;
}
if (xpathResultType2 == XPathResultType.Navigator)
{
xpathResultType2 = XPathResultType.String;
}
if (xpathResultType == XPathResultType.NodeSet || xpathResultType2 == XPathResultType.NodeSet)
{
Expression expression;
Expression expression2;
if (xpathResultType != XPathResultType.NodeSet)
{
expression = this._right;
expression2 = this._left;
XPathResultType xpathResultType3 = xpathResultType;
xpathResultType2 = xpathResultType3;
}
else
{
expression = this._left;
expression2 = this._right;
}
if (xpathResultType2 == XPathResultType.Boolean)
{
return(expression.EvaluateBoolean(iter) == expression2.EvaluateBoolean(iter) == this.trueVal);
}
BaseIterator baseIterator = expression.EvaluateNodeSet(iter);
if (xpathResultType2 == XPathResultType.Number)
{
double num = expression2.EvaluateNumber(iter);
while (baseIterator.MoveNext())
{
if (XPathFunctions.ToNumber(baseIterator.Current.Value) == num == this.trueVal)
{
return(true);
}
}
}
else if (xpathResultType2 == XPathResultType.String)
{
string b = expression2.EvaluateString(iter);
while (baseIterator.MoveNext())
{
if (baseIterator.Current.Value == b == this.trueVal)
{
return(true);
}
}
}
else if (xpathResultType2 == XPathResultType.NodeSet)
{
BaseIterator baseIterator2 = expression2.EvaluateNodeSet(iter);
ArrayList arrayList = new ArrayList();
while (baseIterator.MoveNext())
{
XPathNavigator xpathNavigator = baseIterator.Current;
arrayList.Add(XPathFunctions.ToString(xpathNavigator.Value));
}
while (baseIterator2.MoveNext())
{
XPathNavigator xpathNavigator2 = baseIterator2.Current;
string a = XPathFunctions.ToString(xpathNavigator2.Value);
for (int i = 0; i < arrayList.Count; i++)
{
if (a == (string)arrayList[i] == this.trueVal)
{
return(true);
}
}
}
}
return(false);
}
else
{
if (xpathResultType == XPathResultType.Boolean || xpathResultType2 == XPathResultType.Boolean)
{
return(this._left.EvaluateBoolean(iter) == this._right.EvaluateBoolean(iter) == this.trueVal);
}
if (xpathResultType == XPathResultType.Number || xpathResultType2 == XPathResultType.Number)
{
return(this._left.EvaluateNumber(iter) == this._right.EvaluateNumber(iter) == this.trueVal);
}
return(this._left.EvaluateString(iter) == this._right.EvaluateString(iter) == this.trueVal);
}
}
public override bool EvaluateBoolean(BaseIterator iter)
{
XPathResultType xpathResultType = this._left.GetReturnType(iter);
XPathResultType xpathResultType2 = this._right.GetReturnType(iter);
if (xpathResultType == XPathResultType.Any)
{
xpathResultType = Expression.GetReturnType(this._left.Evaluate(iter));
}
if (xpathResultType2 == XPathResultType.Any)
{
xpathResultType2 = Expression.GetReturnType(this._right.Evaluate(iter));
}
if (xpathResultType == XPathResultType.Navigator)
{
xpathResultType = XPathResultType.String;
}
if (xpathResultType2 == XPathResultType.Navigator)
{
xpathResultType2 = XPathResultType.String;
}
if (xpathResultType != XPathResultType.NodeSet && xpathResultType2 != XPathResultType.NodeSet)
{
return(this.Compare(this._left.EvaluateNumber(iter), this._right.EvaluateNumber(iter)));
}
bool fReverse = false;
Expression expression;
Expression expression2;
if (xpathResultType != XPathResultType.NodeSet)
{
fReverse = true;
expression = this._right;
expression2 = this._left;
XPathResultType xpathResultType3 = xpathResultType;
xpathResultType2 = xpathResultType3;
}
else
{
expression = this._left;
expression2 = this._right;
}
if (xpathResultType2 == XPathResultType.Boolean)
{
bool value = expression.EvaluateBoolean(iter);
bool value2 = expression2.EvaluateBoolean(iter);
return(this.Compare(Convert.ToDouble(value), Convert.ToDouble(value2), fReverse));
}
BaseIterator baseIterator = expression.EvaluateNodeSet(iter);
if (xpathResultType2 == XPathResultType.Number || xpathResultType2 == XPathResultType.String)
{
double arg = expression2.EvaluateNumber(iter);
while (baseIterator.MoveNext())
{
if (this.Compare(XPathFunctions.ToNumber(baseIterator.Current.Value), arg, fReverse))
{
return(true);
}
}
}
else if (xpathResultType2 == XPathResultType.NodeSet)
{
BaseIterator baseIterator2 = expression2.EvaluateNodeSet(iter);
ArrayList arrayList = new ArrayList();
while (baseIterator.MoveNext())
{
XPathNavigator xpathNavigator = baseIterator.Current;
arrayList.Add(XPathFunctions.ToNumber(xpathNavigator.Value));
}
while (baseIterator2.MoveNext())
{
XPathNavigator xpathNavigator2 = baseIterator2.Current;
double arg2 = XPathFunctions.ToNumber(xpathNavigator2.Value);
for (int i = 0; i < arrayList.Count; i++)
{
if (this.Compare((double)arrayList[i], arg2))
{
return(true);
}
}
}
}
return(false);
}
