private bool IsValidExtensionType(IType actualType, IType extensionType, IExtensionEnabled extension)
{
if (TypeCompatibilityRules.IsAssignableFrom(extensionType, actualType))
{
return(true);
}
// Check for a valid generic extension
IMethod method = extension as IMethod;
if (method == null || method.GenericInfo == null)
{
return(false);
}
System.Collections.Generic.List <IGenericParameter> genericParameters = new System.Collections.Generic.List <IGenericParameter>(GenericsServices.FindGenericParameters(extensionType));
if (genericParameters.Count == 0)
{
return(false);
}
TypeInferrer inferrer = new TypeInferrer(genericParameters);
inferrer.Infer(extensionType, actualType);
return(inferrer.FinalizeInference());
}
private bool IsExtensionOf(IType type, IExtensionEnabled entity)
{
if (entity == null || !entity.IsExtension)
{
return(false);
}
IParameter[] parameters = entity.GetParameters();
if (parameters.Length == 0)
{
return(false);
}
IType extensionType = parameters[0].Type;
return(IsValidExtensionType(type, extensionType, entity));
}
public bool Match(object item)
{
IExtensionEnabled e = item as IExtensionEnabled;
if (e == null)
{
return(true);
}
if (!e.IsExtension)
{
return(true);
}
IParameter[] parameters = e.GetParameters();
if (parameters.Length == 0)
{
return(true);
}
return(!parameters[0].Type.IsAssignableFrom(_type));
}
