public override XPathNodeIterator Clone()
{
XPathQueryIterator clone = new XPathQueryIterator(query.Clone(), nav.Clone());
clone.MoveToPosition(this.CurrentPosition);
Debug.Assert(this.CurrentPosition == clone.CurrentPosition);
return(clone);
}
private void InvokeFunction(XPathNavigator qy) {
IXsltContextFunction function = this.Function;
// calculate arguments:
Debug.Assert(_ArgArray != null && _ArgArray.Length == _ArgList.Count);
for(int i = _ArgList.Count - 1; 0 <= i; i --) {
IQuery arg = (IQuery) _ArgList[i];
if (arg.ReturnType() == XPathResultType.NodeSet) {
_ArgArray[i] = new XPathQueryIterator(arg, qy.Clone());
}
else {
_ArgArray[i] = arg.getValue(qy, null);
}
}
try {
object result = function.Invoke(_XsltContext, _ArgArray, qy);
if(result == null) {
_ResultQuery = new OperandQuery( String.Empty, XPathResultType.String );
}
else {
XPathResultType returnedType = function.ReturnType;
if(returnedType == XPathResultType.Any) {
// If function is untyped get returned type from real result
returnedType = XsltCompileContext.GetXPathType(result.GetType());
}
switch (returnedType) {
case XPathResultType.String :
// trick. As soon XPathResultType.Navigator will be distinct type rid of from it.
//_ResultQuery = new OperandQuery( result, XPathResultType.String );
if(result is XPathNavigator) {
_ResultQuery = new NavigatorQuery((XPathNavigator)result);
}
else {
_ResultQuery = new OperandQuery( result, XPathResultType.String );
}
break;
case XPathResultType.Boolean :
_ResultQuery = new OperandQuery( result, XPathResultType.Boolean );
break;
case XPathResultType.Number :
_ResultQuery = new OperandQuery( XmlConvert.ToXPathDouble( result ), XPathResultType.Number );
break;
case XPathResultType.NodeSet :
if (result is ResetableIterator) {
_ResultQuery = new XmlIteratorQuery((ResetableIterator)result);
}
else {
Debug.Assert(false, "Unexpected type of XPathNodeIterator");
throw new NotSupportedException(Res.GetString(Res.XmlUnsupportedType, result.GetType().FullName));
}
break;
// case XPathResultType.Navigator :
// _ResultQuery = new NavigatorQuery((XPathNavigator)result);
// break;
default :
_ResultQuery = new OperandQuery( result.ToString(), XPathResultType.String );
break;
}
}
}
catch(Exception ex) {
string qname = _Prefix != string.Empty ? _Prefix + ":" + _Name : _Name;
throw new XsltException(Res.Xslt_FunctionFailed, new string[] {qname}, ex);
}
}
private void InvokeFunction(XPathNavigator qy)
{
IXsltContextFunction function = this.Function;
// calculate arguments:
Debug.Assert(_ArgArray != null && _ArgArray.Length == _ArgList.Count);
for (int i = _ArgList.Count - 1; 0 <= i; i--)
{
IQuery arg = (IQuery)_ArgList[i];
if (arg.ReturnType() == XPathResultType.NodeSet)
{
_ArgArray[i] = new XPathQueryIterator(arg, qy.Clone());
}
else
{
_ArgArray[i] = arg.getValue(qy, null);
}
}
try {
object result = function.Invoke(_XsltContext, _ArgArray, qy);
if (result == null)
{
_ResultQuery = new OperandQuery(String.Empty, XPathResultType.String);
}
else
{
XPathResultType returnedType = function.ReturnType;
if (returnedType == XPathResultType.Any)
{
// If function is untyped get returned type from real result
returnedType = XsltCompileContext.GetXPathType(result.GetType());
}
switch (returnedType)
{
case XPathResultType.String:
// trick. As soon XPathResultType.Navigator will be distinct type rid of from it.
//_ResultQuery = new OperandQuery( result, XPathResultType.String );
if (result is XPathNavigator)
{
_ResultQuery = new NavigatorQuery((XPathNavigator)result);
}
else
{
_ResultQuery = new OperandQuery(result, XPathResultType.String);
}
break;
case XPathResultType.Boolean:
_ResultQuery = new OperandQuery(result, XPathResultType.Boolean);
break;
case XPathResultType.Number:
_ResultQuery = new OperandQuery(XmlConvert.ToXPathDouble(result), XPathResultType.Number);
break;
case XPathResultType.NodeSet:
if (result is ResetableIterator)
{
_ResultQuery = new XmlIteratorQuery((ResetableIterator)result);
}
else
{
Debug.Assert(false, "Unexpected type of XPathNodeIterator");
throw new NotSupportedException(Res.GetString(Res.XmlUnsupportedType, result.GetType().FullName));
}
break;
// case XPathResultType.Navigator :
// _ResultQuery = new NavigatorQuery((XPathNavigator)result);
// break;
default:
_ResultQuery = new OperandQuery(result.ToString(), XPathResultType.String);
break;
}
}
}
catch (Exception ex) {
string qname = _Prefix != string.Empty ? _Prefix + ":" + _Name : _Name;
throw new XsltException(Res.Xslt_FunctionFailed, new string[] { qname }, ex);
}
}
public override XPathNodeIterator Clone() {
XPathQueryIterator clone = new XPathQueryIterator(query.Clone(), nav.Clone());
clone.MoveToPosition(this.CurrentPosition);
Debug.Assert(this.CurrentPosition == clone.CurrentPosition);
return clone;
}