private void TraverseParticle(XmlSchemaParticle particle, XmlSchemaComplexType baseType, ClrContentTypeInfo typeInfo, XmlSchemaDerivationMethod derivationMethod)
{
if (particleStack == null)
{
particleStack = new Stack<ParticleData>();
}
else
{
particleStack.Clear();
}
if (propertyNameTypeTable == null)
{
propertyNameTypeTable = new Dictionary<string, ClrPropertyInfo>();
}
else
{
propertyNameTypeTable.Clear();
}
XmlSchemaParticle baseParticle = baseType.ContentTypeParticle;
ParticleData particleData;
GroupingInfo parentGroupInfo = null;
StringBuilder regEx = new StringBuilder();
XmlSchemaGroupBase currentGroupBase = null;
GroupingInfo currentGroupingInfo = null;
int currentIndex = 0;
while (true)
{
// dont interrogate a particle if we are past the end of the list
if (currentGroupBase == null || currentIndex <= currentGroupBase.Items.Count)
{
ParticleType particleType = particle.GetParticleType();
switch (particleType)
{
case ParticleType.Element:
{
XmlSchemaElement elem = particle as XmlSchemaElement;
ClrPropertyInfo propertyInfo = null;
bool fromBaseType = false;
if (derivationMethod == XmlSchemaDerivationMethod.Extension && typeInfo.IsDerived)
{
if (baseParticle.ContainsElement(elem))
{
fromBaseType = true;
}
else if (!typeInfo.InlineBaseType && baseType.ContainsName(elem.QualifiedName))
{
typeInfo.InlineBaseType = true;
}
}
propertyInfo = BuildProperty(elem, fromBaseType);
regEx.Append(propertyInfo.PropertyName);
AppendOccurenceToRegex(propertyInfo, regEx);
//Add to parent
if (currentGroupingInfo == null)
{
//Not adding property to propertyNameTypeTable as this case will occur only for pointless groups, so they have just one property
BuildAnnotationInformation(propertyInfo, elem, false, false);
typeInfo.AddMember(propertyInfo);
}
else
{
BuildAnnotationInformation(propertyInfo, elem, currentGroupingInfo.ContentModelType == ContentModelType.Choice, currentGroupingInfo.IsNested);
currentGroupingInfo.AddChild(propertyInfo);
SetPropertyFlags(propertyInfo, currentGroupingInfo, elem.ElementSchemaType);
}
break;
}
case ParticleType.Any:
{
regEx.Append("any");
XmlSchemaAny any = particle as XmlSchemaAny;
if (derivationMethod == XmlSchemaDerivationMethod.Extension && typeInfo.IsDerived)
{
if (baseParticle.ContainsWildCard(any))
{
typeInfo.HasElementWildCard = true;//ANY property in the base type will be reused
}
}
//Note we always create a property info object to keep the original nesting structure in the schema
//so it can be used to create a correct FSM; on the other hand, typeInfo.HasElementWildCard will indicate whether
//we need to create a property in the resulting object type.
ClrWildCardPropertyInfo wcPropertyInfo = BuildAnyProperty(any, !typeInfo.HasElementWildCard);
//Add to parent
if (currentGroupingInfo == null)
{
typeInfo.AddMember(wcPropertyInfo);
}
else
{
currentGroupingInfo.AddChild(wcPropertyInfo);
}
if (!typeInfo.HasElementWildCard) typeInfo.HasElementWildCard = true;
break;
}
case ParticleType.Sequence:
case ParticleType.Choice:
case ParticleType.All:
regEx.Append("(");
if (currentGroupBase != null)
{
//already there is a group that we are processing, push it on stack to process sub-group
particleStack.Push(new ParticleData(currentGroupBase, currentGroupingInfo, currentIndex));
currentIndex = 0; //Re-start index for new group base
}
parentGroupInfo = currentGroupingInfo; //Assign parent before creating child groupInfo
currentGroupBase = particle as XmlSchemaGroupBase;
Debug.Assert(currentGroupBase != null);
currentGroupingInfo = new GroupingInfo((ContentModelType)((int)particleType), GetOccurence(currentGroupBase));
//Add to parent
if (parentGroupInfo == null)
{
typeInfo.AddMember(currentGroupingInfo);
parentGroupInfo = currentGroupingInfo; //Assign first time
}
else
{
parentGroupInfo.AddChild(currentGroupingInfo);
parentGroupInfo.HasChildGroups = true;
currentGroupingInfo.IsNested = true;
if (parentGroupInfo.IsRepeating)
{
currentGroupingInfo.IsRepeating = true;
}
if (currentGroupingInfo.IsRepeating)
{
parentGroupInfo.HasRepeatingGroups = true;
}
}
break;
}
}
//Drill down into items
if (currentGroupBase != null && currentIndex < currentGroupBase.Items.Count)
{
// if this isnt the first, then we need a seperator
if (currentIndex > 0)
{
regEx.Append(currentGroupingInfo.ContentModelType == ContentModelType.Choice ? " | " : ", ");
}
particle = (XmlSchemaParticle)currentGroupBase.Items[currentIndex++];
}
else
{
if (currentGroupBase != null)
{
regEx.Append(")");
AppendOccurenceToRegex(currentGroupingInfo, regEx);
}
if (particleStack.Count > 0)
{
bool childGroupHasRecurringElements = currentGroupingInfo.HasRecurrentElements;
bool childGroupHasRepeatingGroups = currentGroupingInfo.HasRepeatingGroups;
particleData = particleStack.Pop();
currentGroupBase = particleData.currentGroupBase;
currentGroupingInfo = particleData.currentGroupingInfo;
currentGroupingInfo.HasRecurrentElements = childGroupHasRecurringElements;
currentGroupingInfo.HasRepeatingGroups = childGroupHasRepeatingGroups;
currentIndex = particleData.currentIndex;
if (currentIndex < currentGroupBase.Items.Count)
{
particle = (XmlSchemaParticle)currentGroupBase.Items[currentIndex++];
regEx.Append(currentGroupingInfo.ContentModelType == ContentModelType.Choice ? "|" : ", ");
}
else
{
// we were already at the end of the parent group, so just continue
currentIndex++; //we are off the end of this list
}
}
else
{ //No more particles to process
break;
}
}
}
if (regEx.Length != 0)
{
typeInfo.ContentModelRegEx = regEx.ToString();
}
}