private void CreatePredicateValues(INodePointer current, AdkExpression predicate, XsltContext evalContext)
{
if (predicate is AdkEqualOperation)
{
AdkExpression[] components = ((AdkEqualOperation)predicate).Arguments;
AdkLocPath lp = (AdkLocPath)components[0];
AdkNodeNameTest attrName = (AdkNodeNameTest)lp.Steps[0].NodeTest;
INodePointer attr = current.CreateAttribute(this, attrName.NodeName);
Object value = components[1].ComputeValue(evalContext);
attr.SetValue(value);
return;
}
// This might be the 'adk:x()' function
if (predicate is AdkAndOperation)
{
foreach (AdkExpression expr in ((AdkAndOperation)predicate).Arguments)
{
if (expr is AdkFunction && ((AdkFunction)expr).FunctionName.Equals("adk:x"))
{
// This is the special marker function that tells the ADK to always
// create the parent repeatable element. Don't evaluate it.
continue;
}
else
{
CreatePredicateValues(current, expr, evalContext);
}
}
return;
}
// Unrecognized predicate
throw new ArgumentException("Cannot evaluate expression predicate: " + predicate);
}
private void AssertStep(AdkXPathStep step, String name, String singePredicateName, object singlePredicateValue)
{
Assert.AreEqual(name, ((AdkNodeNameTest)step.NodeTest).NodeName);
Assert.IsNotNull(step.Predicates);
Assert.AreEqual(1, step.Predicates.Length);
Assert.IsInstanceOfType(typeof(AdkEqualOperation), step.Predicates[0]);
AdkExpression[] components = ((AdkEqualOperation)step.Predicates[0]).Arguments;
Assert.AreEqual(2, components.Length);
Assert.IsInstanceOfType(typeof(AdkLocPath), components[0]);
AdkLocPath lp = (AdkLocPath)components[0];
AdkNodeNameTest attrName = (AdkNodeNameTest)lp.Steps[0].NodeTest;
Assert.AreEqual(singePredicateName, attrName.NodeName);
object value = components[1].ComputeValue(null);
Assert.AreEqual(singlePredicateValue, value);
}