protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
var nodes = args[0] as XPathNodeIterator;
if (nodes == null)
{
return(double.NaN);
}
double current = double.MinValue;
foreach (var node in nodes)
{
double value = double.MinValue;
if (node is XElement && !double.TryParse(((XElement)node).Value, out value) ||
node is XAttribute && !double.TryParse(((XAttribute)node).Value, out value))
{
continue;
}
if (current < value)
{
current = value;
}
}
return(current != double.MinValue ? current : double.NaN);
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
var idRef = (IdRef)(string)args[0];
if (idRef == null)
{
return(double.NaN);
}
var element = context.Xml.ResolveId(idRef);
if (element == null)
{
return(double.NaN);
}
var repeat = element.InterfaceOrDefault <Repeat>();
if (repeat == null)
{
return(double.NaN);
}
return((double)repeat.Index);
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
var id = args.Length > 0 ? ((string)args[0]).TrimToNull() : null;
if (id == null)
{
return(GetModel(context, navigator).Instances
.Select(i => i.State.Document.Root.CreateNavigator().Select("."))
.FirstOrDefault());
}
else
{
// resolve instance based on id
var instance = context.Xml.ResolveId(id);
if (instance == null)
{
throw new DOMTargetEventException(context.Xml.Parent, Events.BindingException,
string.Format("Unresolved instance IDREF '{0}'.", id));
}
return(instance
.Interfaces <Instance>()
.Select(i => i.State.Document)
.Where(i => i != null)
.Select(i => i.Root.CreateNavigator().Select("."))
.FirstOrDefault());
}
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
bool result;
if (bool.TryParse(args[0].ToString(), out result))
return result;
else
return false;
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
DateTime d;
if (!DateTime.TryParse((string)args[0], out d))
return double.NaN;
return (d - new DateTime(1970, 1, 1)).TotalDays;
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
if (args.Length >= 2 &&
args[0] as bool? == true)
return args[1];
else if (args.Length >= 3)
return args[2];
return null;
}
/// <summary>
/// Gets the current instance of the navigator.
/// </summary>
/// <param name="context"></param>
/// <param name="navigator"></param>
/// <returns></returns>
protected Instance GetInstance(EvaluationXsltContext context, XPathNavigator navigator)
{
Contract.Requires<ArgumentNullException>(context != null);
Contract.Requires<ArgumentNullException>(navigator != null);
Contract.Requires<ArgumentNullException>(navigator.UnderlyingObject != null);
Contract.Requires<ArgumentNullException>(navigator.UnderlyingObject is XObject);
return GetInstance(navigator);
}
/// <summary>
/// Gets the current instance of the navigator.
/// </summary>
/// <param name="context"></param>
/// <param name="navigator"></param>
/// <returns></returns>
protected Instance GetInstance(EvaluationXsltContext context, XPathNavigator navigator)
{
Contract.Requires <ArgumentNullException>(context != null);
Contract.Requires <ArgumentNullException>(navigator != null);
Contract.Requires <ArgumentNullException>(navigator.UnderlyingObject != null);
Contract.Requires <ArgumentNullException>(navigator.UnderlyingObject is XObject);
return(GetInstance(navigator));
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
DateTime d;
if (!DateTime.TryParse((string)args[0], out d))
{
return(double.NaN);
}
return((d - new DateTime(1970, 1, 1)).TotalDays);
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
bool result;
if (bool.TryParse(args[0].ToString(), out result))
{
return(result);
}
else
{
return(false);
}
}
/// <summary>
/// Gets the current model of the navigator.
/// </summary>
/// <param name="context"></param>
/// <param name="navigator"></param>
/// <returns></returns>
protected Model GetModel(EvaluationXsltContext context, XPathNavigator navigator)
{
Contract.Requires<ArgumentNullException>(context != null);
Contract.Requires<ArgumentNullException>(navigator != null);
Contract.Requires<ArgumentNullException>(navigator.UnderlyingObject != null);
Contract.Requires<ArgumentNullException>(navigator.UnderlyingObject is XObject);
var result = GetModel(navigator);
if (result == null)
throw new NullReferenceException();
return result;
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
if (args.Length >= 2 &&
args[0] as bool? == true)
{
return(args[1]);
}
else if (args.Length >= 3)
{
return(args[2]);
}
return(null);
}
/// <summary>
/// Gets the current model of the navigator.
/// </summary>
/// <param name="context"></param>
/// <param name="navigator"></param>
/// <returns></returns>
protected Model GetModel(EvaluationXsltContext context, XPathNavigator navigator)
{
Contract.Requires <ArgumentNullException>(context != null);
Contract.Requires <ArgumentNullException>(navigator != null);
Contract.Requires <ArgumentNullException>(navigator.UnderlyingObject != null);
Contract.Requires <ArgumentNullException>(navigator.UnderlyingObject is XObject);
var result = GetModel(navigator);
if (result == null)
{
throw new NullReferenceException();
}
return(result);
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
var idRef = (IdRef)(string)args[0];
if (idRef == null)
return double.NaN;
var element = context.Xml.ResolveId(idRef);
if (element == null)
return double.NaN;
var repeat = element.InterfaceOrDefault<Repeat>();
if (repeat == null)
return double.NaN;
return (double)repeat.Index;
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
var nodes = args[0] as XPathNodeIterator;
if (nodes == null)
return double.NaN;
double current = double.MinValue;
foreach (var node in nodes)
{
double value = double.MinValue;
if (node is XElement && !double.TryParse(((XElement)node).Value, out value) ||
node is XAttribute && !double.TryParse(((XAttribute)node).Value, out value))
continue;
if (current < value)
current = value;
}
return current != double.MinValue ? current : double.NaN;
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
var id = args.Length > 0 ? ((string)args[0]).TrimToNull() : null;
if (id == null)
return GetModel(context, navigator).Instances
.Select(i => i.State.Document.Root.CreateNavigator().Select("."))
.FirstOrDefault();
else
{
// resolve instance based on id
var instance = context.Xml.ResolveId(id);
if (instance == null)
throw new DOMTargetEventException(context.Xml.Parent, Events.BindingException,
string.Format("Unresolved instance IDREF '{0}'.", id));
return instance
.Interfaces<Instance>()
.Select(i => i.State.Document)
.Where(i => i != null)
.Select(i => i.Root.CreateNavigator().Select("."))
.FirstOrDefault();
}
}
/// <summary> /// Implement this method to provide function implementation. /// </summary> /// <param name="args"></param> /// <returns></returns> protected abstract object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args);
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
return(DateTime.UtcNow.ToString("yyyy-MM-ddThh:mm:ssZ"));
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
return context.EvaluationContext.Position;
}
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
return(context.EvaluationContext.Position);
}
/// <summary> /// Implement this method to provide function implementation. /// </summary> /// <param name="args"></param> /// <returns></returns> protected abstract object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args);
protected override object Invoke(EvaluationXsltContext context, XPathNavigator navigator, params object[] args)
{
return DateTime.UtcNow.ToString("yyyy-MM-ddThh:mm:ssZ");
}