BaseIterator ToBaseIterator(XPathNodeIterator iter, NSResolver ctx)
{
BaseIterator i = iter as BaseIterator;
if (i == null)
{
i = new WrapperIterator(iter, ctx);
}
return(i);
}
public override object Evaluate(BaseIterator iter)
{
object obj = this._expr.Evaluate(iter);
XPathNodeIterator xpathNodeIterator = obj as XPathNodeIterator;
BaseIterator baseIterator = xpathNodeIterator as BaseIterator;
if (baseIterator == null && xpathNodeIterator != null)
{
baseIterator = new WrapperIterator(xpathNodeIterator, iter.NamespaceManager);
}
if (baseIterator != null)
{
return(new ParensIterator(baseIterator));
}
return(obj);
}
public virtual BaseIterator EvaluateNodeSet(BaseIterator iter)
{
XPathResultType returnType = this.GetReturnType(iter);
switch (returnType)
{
case XPathResultType.NodeSet:
case XPathResultType.Navigator:
case XPathResultType.Any:
{
object obj = this.Evaluate(iter);
XPathNodeIterator xpathNodeIterator = obj as XPathNodeIterator;
BaseIterator baseIterator = null;
if (xpathNodeIterator != null)
{
baseIterator = (xpathNodeIterator as BaseIterator);
if (baseIterator == null)
{
baseIterator = new WrapperIterator(xpathNodeIterator, iter.NamespaceManager);
}
return(baseIterator);
}
XPathNavigator xpathNavigator = obj as XPathNavigator;
if (xpathNavigator != null)
{
XPathNodeIterator xpathNodeIterator2 = xpathNavigator.SelectChildren(XPathNodeType.All);
baseIterator = (xpathNodeIterator2 as BaseIterator);
if (baseIterator == null && xpathNodeIterator2 != null)
{
baseIterator = new WrapperIterator(xpathNodeIterator2, iter.NamespaceManager);
}
}
if (baseIterator != null)
{
return(baseIterator);
}
if (obj == null)
{
return(new NullIterator(iter));
}
returnType = Expression.GetReturnType(obj);
break;
}
}
throw new XPathException(string.Format("expected nodeset but was {1}: {0}", this.ToString(), returnType));
}
BaseIterator ToBaseIterator (XPathNodeIterator iter, NSResolver ctx)
{
BaseIterator i = iter as BaseIterator;
if (i == null)
i = new WrapperIterator (iter, ctx);
return i;
}
private WrapperIterator(WrapperIterator other)
: base(other)
{
iter = other.iter.Clone();
}
private WrapperIterator (WrapperIterator other)
: base (other)
{
iter = other.iter.Clone ();
}
public virtual BaseIterator EvaluateNodeSet (BaseIterator iter)
{
XPathResultType type = GetReturnType (iter);
switch (type) {
case XPathResultType.NodeSet:
case XPathResultType.Any:
case XPathResultType.Navigator: // FIXME: It may pass not-allowed use of RTF
object o = Evaluate (iter);
XPathNodeIterator xi = o as XPathNodeIterator;
BaseIterator iterResult = null;
if (xi != null) {
iterResult = xi as BaseIterator;
if (iterResult == null)
iterResult = new WrapperIterator (xi, iter.NamespaceManager);
return iterResult;
}
XPathNavigator nav = o as XPathNavigator;
if (nav != null) {
XPathNodeIterator xiter = nav.SelectChildren (XPathNodeType.All);
iterResult = xiter as BaseIterator;
if (iterResult == null && xiter != null)
iterResult = new WrapperIterator (xiter, iter.NamespaceManager);
}
if (iterResult != null)
return iterResult;
if (o == null)
return new NullIterator (iter);
type = GetReturnType (o);
break;
}
throw new XPathException (String.Format ("expected nodeset but was {1}: {0}", ToString (), type));
}
public override object Evaluate (BaseIterator iter)
{
object o = (_expr.Evaluate (iter));
XPathNodeIterator xi = o as XPathNodeIterator;
BaseIterator predBase = xi as BaseIterator;
if (predBase == null && xi != null)
predBase = new WrapperIterator (xi, iter.NamespaceManager);
if (predBase != null)
return new ParensIterator (predBase);
else
return o;
}
