// TODO: Get rid of the HashSet param if we're not using it
private Boolean TryPopulateGroup(
IElement group,
ModelElement modelGroup,
IEnumerator<Segment> segments,
HashSet<String> matchedSegments)
{
List<IElement> itemsInGroup = new List<IElement>(modelGroup.Items.Length);
Int32 i = 0, bookmark = 0;
Boolean modelElementMatchedOnce = false;
while (i < modelGroup.Items.Length)
{
Boolean didMatch = false;
ModelElement modelElement = (ModelElement)modelGroup.Items[i];
// If the current model item is a group...
if (modelElement is ModelSegmentGroup)
{
// Create a container for the message tree
SegmentGroup g = new SegmentGroup(modelElement.Name);
// Then try to populate the new group
if (TryPopulateGroup(g, modelElement, segments, matchedSegments))
{
itemsInGroup.Add(g);
didMatch = true;
}
}
// Else the current model item is a segment
else
{
// If the current segment matches the current model
// segment by name...
if (segments.Current.Name == modelElement.Name)
{
// TODO: Check for a grouping definition here
// and call a method to group segments
itemsInGroup.Add(segments.Current);
segments.MoveNext();
didMatch = true;
}
}
// If we did match...
if (didMatch)
{
if (!modelElement.CanRepeat)
{
i++;
bookmark = i;
modelElementMatchedOnce = false;
}
else
modelElementMatchedOnce = true;
}
// ...else we didn't match
else
{
// If it's the first iteration, consider the possibility that the parent group is
// a better place to try matching.
if (i == 0 && modelGroup.CanRepeat)
break;
// If the model element is required and wasn't matched on a prior iteration...
// We may also need to check here if the parent wasn't matched on a prior iteration
if (modelElement.IsRequired && !modelElementMatchedOnce)
{
if (! segments.MoveNext())
throw new Exception("Required element could not be matched.");
}
// Else if we've reached the end of the model group
else if (i == modelGroup.Items.Length)
{
// Since we didn't match by peeking ahead to the end of the group, reset i to bookmarked value
if (bookmark < i)
i = bookmark;
}
// Otherwise, just move to the next element in the model group
else
{
i++;
modelElementMatchedOnce = false;
}
}
// Always check if current is null and exit the while
if (segments.Current == null)
break;
}
group.Items = itemsInGroup.ToArray();
return itemsInGroup.Any();
}
// TODO: Get rid of the HashSet param if we're not using it
private Boolean TryPopulateGroup(
IElement group,
ModelElement modelGroup,
IEnumerator <Segment> segments,
HashSet <String> matchedSegments)
{
List <IElement> itemsInGroup = new List <IElement>(modelGroup.Items.Length);
Int32 i = 0, bookmark = 0;
Boolean modelElementMatchedOnce = false;
while (i < modelGroup.Items.Length)
{
Boolean didMatch = false;
ModelElement modelElement = (ModelElement)modelGroup.Items[i];
// If the current model item is a group...
if (modelElement is ModelSegmentGroup)
{
// Create a container for the message tree
SegmentGroup g = new SegmentGroup(modelElement.Name);
// Then try to populate the new group
if (TryPopulateGroup(g, modelElement, segments, matchedSegments))
{
itemsInGroup.Add(g);
didMatch = true;
}
}
// Else the current model item is a segment
else
{
// If the current segment matches the current model
// segment by name...
if (segments.Current.Name == modelElement.Name)
{
// TODO: Check for a grouping definition here
// and call a method to group segments
itemsInGroup.Add(segments.Current);
segments.MoveNext();
didMatch = true;
}
}
// If we did match...
if (didMatch)
{
if (!modelElement.CanRepeat)
{
i++;
bookmark = i;
modelElementMatchedOnce = false;
}
else
{
modelElementMatchedOnce = true;
}
}
// ...else we didn't match
else
{
// If it's the first iteration, consider the possibility that the parent group is
// a better place to try matching.
if (i == 0 && modelGroup.CanRepeat)
{
break;
}
// If the model element is required and wasn't matched on a prior iteration...
// We may also need to check here if the parent wasn't matched on a prior iteration
if (modelElement.IsRequired && !modelElementMatchedOnce)
{
if (!segments.MoveNext())
{
throw new Exception("Required element could not be matched.");
}
}
// Else if we've reached the end of the model group
else if (i == modelGroup.Items.Length)
{
// Since we didn't match by peeking ahead to the end of the group, reset i to bookmarked value
if (bookmark < i)
{
i = bookmark;
}
}
// Otherwise, just move to the next element in the model group
else
{
i++;
modelElementMatchedOnce = false;
}
}
// Always check if current is null and exit the while
if (segments.Current == null)
{
break;
}
}
group.Items = itemsInGroup.ToArray();
return(itemsInGroup.Any());
}