private bool IsOrderedSet()
{
for (int k = 0; k < _path.Length; k++)
{
XPath2ExprType exprType;
if (_path[k].type == XPath2ExprType.Expr)
{
if (k == 0)
{
continue;
}
FilterExprNode filterExpr = _path[k].node as FilterExprNode;
if (filterExpr == null)
{
return(false);
}
PathExprNode pathExpr = filterExpr[0] as PathExprNode;
if (pathExpr == null)
{
return(false);
}
exprType = pathExpr._path[0].type;
}
else
{
exprType = _path[k].type;
}
switch (exprType)
{
case XPath2ExprType.Expr:
case XPath2ExprType.Parent:
case XPath2ExprType.Ancestor:
case XPath2ExprType.AncestorOrSelf:
case XPath2ExprType.Preceding:
case XPath2ExprType.PrecedingSibling:
return(false);
case XPath2ExprType.Descendant:
case XPath2ExprType.DescendantOrSelf:
case XPath2ExprType.Following:
case XPath2ExprType.ChildOverDescendants:
if (k < _path.Length - 1)
{
for (int s = k + 1; s < _path.Length; s++)
{
if (_path[s].type != XPath2ExprType.Attribute &&
_path[s].type != XPath2ExprType.Namespace)
{
return(false);
}
}
}
break;
}
}
return(true);
}
public override void Bind()
{
if (Count > 0)
{
PathExprNode pathExpr = this[0] as PathExprNode;
if (pathExpr != null &&
s_aggregates.Contains(_name) && _ns == XmlReservedNs.NsXQueryFunc)
{
pathExpr.Unordered = true;
}
}
base.Bind();
}
public static PathStep Create(XPath2Context context, object node)
{
PathStep res = node as PathStep;
if (res != null)
{
return(res);
}
PathExprNode pathExpr = node as PathExprNode;
if (pathExpr != null)
{
return(pathExpr.FirstStep);
}
return(new PathStep(AbstractNode.Create(context, node)));
}
