static object DefaultAspectHandler(object targetObject,
MethodBase method,
object[] parameters,
AspectAttribute[] attributes)
{
object returnValue;
InsteadAttribute instead = null;
foreach (AspectAttribute b in attributes)
{
if (b is BeforeAttribute)
b.Action(targetObject, method, parameters, null);
else if (b is InsteadAttribute)
instead = (InsteadAttribute)b;
}
if (instead != null)
returnValue = instead.Action(targetObject,method,parameters,null);
else
returnValue = targetObject.GetType().GetMethod(method.Name,GetParameterTypes(method)).
Invoke(targetObject,parameters);
// Una acción After puede necesitar del resultado de haber evaluado el
// método por eso se le pasa returnValue
foreach (AspectAttribute a in attributes)
if (a is AfterAttribute)
a.Action(targetObject, method, parameters, returnValue);
return returnValue;
}
public static AspectAttribute[] AspectUnion(AspectAttribute[] asp1, AspectAttribute[] asp2)
{
int i;
AspectAttribute[] aspResult = new AspectAttribute[asp1.Length + asp2.Length];
for (i=0; i < asp1.Length; i++)
aspResult[i] = asp1[i];
for (int j=0; j<asp2.Length; j++)
aspResult[i+j] = asp2[j];
return aspResult;
}
