/// <summary>
/// <see cref="CodeResolvingUtils.GetEventHandlerInfo"/> helper allows not only graph events but also helper methods with appropriate signature.
/// However, for graph events semantic model we are interested only in graph events, so we need to rule out helper methods by checking their signature.
/// </summary>
/// <param name="eventCandidate">The event candidate.</param>
/// <param name="signatureType">Type of the signature.</param>
/// <param name="eventCategory">Category the event belongs to.</param>
/// <returns/>
private bool IsValidGraphEvent(IMethodSymbol eventCandidate, EventHandlerSignatureType signatureType, GraphEventCategory eventCategory)
{
if (eventCandidate.IsStatic || eventCandidate.Parameters.Length > 2 || eventCategory == GraphEventCategory.None)
{
return(false);
}
else if (signatureType != EventHandlerSignatureType.Default)
{
return(true);
}
const char underscore = '_';
if (eventCandidate.Name[0] == underscore || eventCandidate.Name[eventCandidate.Name.Length - 1] == underscore)
{
return(false);
}
int underscoresCount = eventCandidate.Name.Count(c => c == underscore);
switch (eventCategory)
{
case GraphEventCategory.Row:
return(underscoresCount == 1);
case GraphEventCategory.Field:
return(underscoresCount == 2);
default:
return(false);
}
}
public GraphFieldEventInfo(MethodDeclarationSyntax node, IMethodSymbol symbol, int declarationOrder,
EventHandlerSignatureType signatureType, EventType eventType, GraphFieldEventInfo baseInfo)
: base(node, symbol, declarationOrder, signatureType, eventType, baseInfo)
{
ValidateEventType(eventType);
DacFieldName = GetDacFieldName();
}
protected GraphEventInfoBase(MethodDeclarationSyntax node, IMethodSymbol symbol, int declarationOrder,
EventHandlerSignatureType signatureType, EventType eventType) :
base(node, symbol, declarationOrder)
{
SignatureType = signatureType;
EventType = eventType;
DacName = GetDacName();
}
public void AddFieldEvent(EventHandlerSignatureType signatureType, EventType eventType, IMethodSymbol methodSymbol,
int declarationOrder, CancellationToken cancellationToken)
{
var methodNode = GetMethodNode(methodSymbol, cancellationToken);
if (methodNode == null || !_fieldEvents.TryGetValue(eventType, out OverridableItemsCollection <GraphFieldEventInfo> collectionToAdd))
{
return;
}
GraphFieldEventInfo eventToAdd = new GraphFieldEventInfo(methodNode, methodSymbol, declarationOrder, signatureType, eventType);
if (!eventToAdd.DacName.IsNullOrEmpty() && !eventToAdd.DacFieldName.IsNullOrEmpty())
{
collectionToAdd.Add(eventToAdd);
}
}
public EventInfo(EventType type, EventHandlerSignatureType signatureType)
{
Type = type;
SignatureType = signatureType;
}
public GraphRowEventInfo(MethodDeclarationSyntax node, IMethodSymbol symbol, int declarationOrder,
EventHandlerSignatureType signatureType, EventType eventType, GraphRowEventInfo baseInfo)
: base(node, symbol, declarationOrder, signatureType, eventType, baseInfo)
{
}
