private void EnqueueEvent(CodeModelEvent @event)
{
// Don't bother with events that are already queued.
foreach (var queuedEvent in _eventQueue)
{
if (queuedEvent.Equals(@event))
{
return;
}
}
// Events are added to the end of the queue, so we only check the
// last event to see if we can combine it with the new event. The
// other events will be for prior edits, and should remain distinct.
// In order to combine the events, they must both be for the same node,
// and they must both be change events.
if (_eventQueue.Count > 0)
{
var priorEvent = _eventQueue.Peek();
if (priorEvent.Node == @event.Node &&
priorEvent.Type.IsChange() &&
@event.Type.IsChange())
{
priorEvent.Type |= @event.Type;
return;
}
}
_eventQueue.Enqueue(@event);
}
private EnvDTE.CodeElement GetAttributeArgumentForCodeModelEvent(CodeModelEvent codeModelEvent, EnvDTE.CodeElements parentAttributeArguments, object parentElement)
{
if (parentAttributeArguments == null)
{
return null;
}
CodeModelService.GetAttributeArgumentParentAndIndex(codeModelEvent.Node, out var attributeNode, out var ordinal);
if (codeModelEvent.Type == CodeModelEventType.Remove)
{
var parentCodeElement = ComAggregate.TryGetManagedObject<CodeAttribute>(parentElement);
if (parentCodeElement != null)
{
return (EnvDTE.CodeElement)CodeAttributeArgument.Create(this.State, parentCodeElement, ordinal);
}
}
else
{
return parentAttributeArguments.Item(ordinal + 1); // Needs to be 1-based to call back into code model
}
return null;
}
private EnvDTE.CodeElement GetAttributeArgumentElementForCodeModelEvent(CodeModelEvent codeModelEvent, object parentElement)
{
var parentAttribute = parentElement as EnvDTE80.CodeAttribute2;
if (parentAttribute != null)
{
return GetAttributeArgumentForCodeModelEvent(codeModelEvent, parentAttribute.Arguments, parentElement);
}
return null;
}
private EnvDTE.CodeElement GetAttributeElementForCodeModelEvent(CodeModelEvent codeModelEvent, object parentElement)
{
var node = codeModelEvent.Node;
var parentNode = codeModelEvent.ParentNode;
var eventType = codeModelEvent.Type;
var parentType = parentElement as EnvDTE.CodeType;
if (parentType != null)
{
return GetAttributeElementForCodeModelEvent(node, parentNode, eventType, parentType.Attributes, parentElement);
}
var parentFunction = parentElement as EnvDTE.CodeFunction;
if (parentFunction != null)
{
return GetAttributeElementForCodeModelEvent(node, parentNode, eventType, parentFunction.Attributes, parentElement);
}
var parentProperty = parentElement as EnvDTE.CodeProperty;
if (parentProperty != null)
{
return GetAttributeElementForCodeModelEvent(node, parentNode, eventType, parentProperty.Attributes, parentElement);
}
var parentEvent = parentElement as EnvDTE80.CodeEvent;
if (parentEvent != null)
{
return GetAttributeElementForCodeModelEvent(node, parentNode, eventType, parentEvent.Attributes, parentElement);
}
var parentVariable = parentElement as EnvDTE.CodeVariable;
if (parentVariable != null)
{
return GetAttributeElementForCodeModelEvent(node, parentNode, eventType, parentVariable.Attributes, parentElement);
}
// In the following case, parentNode is null and the root should be used instead.
var parentFileCodeModel = parentElement as EnvDTE.FileCodeModel;
if (parentFileCodeModel != null)
{
var fileCodeModel = ComAggregate.TryGetManagedObject<FileCodeModel>(parentElement);
parentNode = fileCodeModel.GetSyntaxRoot();
return GetAttributeElementForCodeModelEvent(node, parentNode, eventType, parentFileCodeModel.CodeElements, parentElement);
}
return null;
}
private EnvDTE.CodeElement GetParameterElementForCodeModelEvent(CodeModelEvent codeModelEvent, EnvDTE.CodeElements parentParameters, object parentElement)
{
if (parentParameters == null)
{
return null;
}
var parameterName = this.CodeModelService.GetName(codeModelEvent.Node);
if (codeModelEvent.Type == CodeModelEventType.Remove)
{
var parentCodeElement = ComAggregate.TryGetManagedObject<AbstractCodeMember>(parentElement);
if (parentCodeElement != null)
{
return (EnvDTE.CodeElement)CodeParameter.Create(this.State, parentCodeElement, parameterName);
}
}
else
{
return parentParameters.Item(parameterName);
}
return null;
}
private EnvDTE.CodeElement GetParameterElementForCodeModelEvent(CodeModelEvent codeModelEvent, object parentElement)
{
var parentDelegate = parentElement as EnvDTE.CodeDelegate;
if (parentDelegate != null)
{
return GetParameterElementForCodeModelEvent(codeModelEvent, parentDelegate.Parameters, parentElement);
}
var parentFunction = parentElement as EnvDTE.CodeFunction;
if (parentFunction != null)
{
return GetParameterElementForCodeModelEvent(codeModelEvent, parentFunction.Parameters, parentElement);
}
var parentProperty = parentElement as EnvDTE80.CodeProperty2;
if (parentProperty != null)
{
return GetParameterElementForCodeModelEvent(codeModelEvent, parentProperty.Parameters, parentElement);
}
return null;
}
private object GetParentElementForCodeModelEvent(CodeModelEvent codeModelEvent)
{
if (this.CodeModelService.IsParameterNode(codeModelEvent.Node) ||
this.CodeModelService.IsAttributeArgumentNode(codeModelEvent.Node))
{
if (codeModelEvent.ParentNode != null)
{
return this.GetOrCreateCodeElement<EnvDTE.CodeElement>(codeModelEvent.ParentNode);
}
}
else if (this.CodeModelService.IsAttributeNode(codeModelEvent.Node))
{
if (codeModelEvent.ParentNode != null)
{
return this.GetOrCreateCodeElement<EnvDTE.CodeElement>(codeModelEvent.ParentNode);
}
else
{
return this;
}
}
else if (codeModelEvent.Type == CodeModelEventType.Remove)
{
if (codeModelEvent.ParentNode != null &&
codeModelEvent.ParentNode.Parent != null)
{
return this.GetOrCreateCodeElement<EnvDTE.CodeElement>(codeModelEvent.ParentNode);
}
else
{
return this;
}
}
return null;
}
// internal for testing
internal void GetElementsForCodeModelEvent(CodeModelEvent codeModelEvent, out EnvDTE.CodeElement element, out object parentElement)
{
parentElement = GetParentElementForCodeModelEvent(codeModelEvent);
if (codeModelEvent.Node == null)
{
element = this.CodeModelService.CreateUnknownRootNamespaceCodeElement(this.State, this);
}
else if (this.CodeModelService.IsParameterNode(codeModelEvent.Node))
{
element = GetParameterElementForCodeModelEvent(codeModelEvent, parentElement);
}
else if (this.CodeModelService.IsAttributeNode(codeModelEvent.Node))
{
element = GetAttributeElementForCodeModelEvent(codeModelEvent, parentElement);
}
else if (this.CodeModelService.IsAttributeArgumentNode(codeModelEvent.Node))
{
element = GetAttributeArgumentElementForCodeModelEvent(codeModelEvent, parentElement);
}
else
{
if (codeModelEvent.Type == CodeModelEventType.Remove)
{
element = this.CodeModelService.CreateUnknownCodeElement(this.State, this, codeModelEvent.Node);
}
else
{
element = this.GetOrCreateCodeElement<EnvDTE.CodeElement>(codeModelEvent.Node);
}
}
if (element == null)
{
Debug.Fail("We should have created an element for this event!");
}
Debug.Assert(codeModelEvent.Type != CodeModelEventType.Remove || parentElement != null);
}