public virtual IEnumerator iterator()
{
return(rs.iterator());
}
// convert argument according to section 3.1.5 of xpath 2.0 spec
/// <summary>
/// Convert the input argument according to section 3.1.5 of specification.
/// </summary>
/// <param name="arg">
/// input argument. </param>
/// <param name="expected">
/// Expected Sequence type. </param>
/// <exception cref="DynamicError">
/// Dynamic error. </exception>
/// <returns> Converted argument. </returns>
public static org.eclipse.wst.xml.xpath2.api.ResultSequence convert_argument(org.eclipse.wst.xml.xpath2.api.ResultSequence arg, SeqType expected)
{
ResultBuffer result = new ResultBuffer();
// XXX: Should use type_class instead and use item.getClass().isAssignableTo(expected.type_class())
AnyType expected_type = expected.type();
// expected is atomic
if (expected_type is AnyAtomicType)
{
AnyAtomicType expected_aat = (AnyAtomicType)expected_type;
// atomize
org.eclipse.wst.xml.xpath2.api.ResultSequence rs = FnData.atomize(arg);
// cast untyped to expected type
for (var i = rs.iterator(); i.MoveNext();)
{
AnyType item = (AnyType)i.Current;
if (item is XSUntypedAtomic)
{
// create a new item of the expected
// type initialized with from the string
// value of the item
ResultSequence converted = null;
if (expected_aat is XSString)
{
XSString strType = new XSString(item.StringValue);
converted = ResultSequenceFactory.create_new(strType);
}
else
{
converted = ResultSequenceFactory.create_new(item);
}
result.concat(converted);
}
// xs:anyURI promotion to xs:string
else if (item is XSAnyURI && expected_aat is XSString)
{
result.add(new XSString(item.StringValue));
}
// numeric type promotion
else if (item is NumericType)
{
if (expected_aat is XSDouble)
{
XSDouble doubleType = new XSDouble(item.StringValue);
result.add(doubleType);
}
else
{
result.add(item);
}
}
else
{
result.add(item);
}
}
// do sequence type matching on converted arguments
return(expected.match(result.Sequence));
}
else
{
// do sequence type matching on converted arguments
return(expected.match(arg));
}
}