public Expression CreateExpressionFor(XmlNode node)
{
List <LocationStep> steps = new List <LocationStep>();
XmlNode current = node;
while (current != null)
{
steps.Insert(0, new LocationStep(AxisSpecifier.Descendant, NodeTest.Create("")));
current = current.ParentNode;
}
return(null);
}
public LocationStep(string exp)
{
if (exp.IndexOf("::") > 0)
{
int start = exp.IndexOf("::");
string axisSpec = exp.Substring(0, start);
exp = exp.Substring(start + 2);
this._axis = AxisSpecifier.Find(axisSpec);
}
else
{
if (exp[0] == '@')
{
this._axis = AxisSpecifier.Attribute;
exp = exp.Substring(1);
}
else if (exp.Length >= 2 && exp.Substring(0, 2).Equals(".."))
{
this._axis = AxisSpecifier.Parent;
}
else if (exp[0] == '.')
{
this._axis = AxisSpecifier.Self;
}
else
{
this._axis = AxisSpecifier.Child;
}
}
this._predicates = new List <Predicate>();
MatchCollection matches = predicateMatcher.Matches(exp);
if (matches.Count > 0)
{
foreach (Match match in matches)
{
this._predicates.Add(new Predicate(match.Value));
}
exp = exp.Substring(0, matches[0].Index);
}
if (this._axis == AxisSpecifier.Parent)
{
this._nodeTest = NodeTest.Create("*");
}
else
{
this._nodeTest = NodeTest.Create(exp);
}
}
/// <summary>
/// Creates a new Location Step for a provided axis type and node test
/// </summary>
/// <param name="axis"></param>
/// <param name="nodeTest"></param>
public LocationStep(AxisSpecifier axis, NodeTest nodeTest)
{
this._axis = axis;
this._nodeTest = nodeTest;
this._predicates = new List <Predicate>();
}
