public void ProcessEvent(EventDefinition eventt)
{
_logger.LogDebug("Beginning processing event " + eventt.Name);
FieldReference eventDelegate = eventt.GetEventDelegate();
if (eventDelegate != null)
{
if (eventDelegate.FieldType.IsValidEventDelegate())
{
WeakEventWeaver weakEventWeaver = new WeakEventWeaver(eventDelegate, _moduleImporter);
ProcessAddMethod(eventt.AddMethod, weakEventWeaver);
ProcessRemoveMethod(eventt.RemoveMethod, weakEventWeaver);
}
else
{
_logger.LogInfo("Skipping event " + eventt + ", incompatible event delegate type");
}
}
else
{
_logger.LogInfo("Skipping event " + eventt + ", could not determine the event delegate field");
}
_logger.LogDebug("Finished processing event " + eventt.Name);
}
public void ProcessEvent(EventDefinition eventt)
{
_logger.LogDebug("Beginning processing event " + eventt.Name);
FieldReference eventDelegate = eventt.GetEventDelegate();
if (eventDelegate != null)
{
if (eventDelegate.FieldType.IsValidEventDelegate())
{
WeakEventWeaver weakEventWeaver = new WeakEventWeaver(eventDelegate, _moduleImporter);
ProcessAddMethod(eventt.AddMethod, weakEventWeaver);
ProcessRemoveMethod(eventt.RemoveMethod, weakEventWeaver);
}
else
{
_logger.LogInfo("Skipping event " + eventt + ", incompatible event delegate type");
}
}
else
{
_logger.LogInfo("Skipping event " + eventt + ", could not determine the event delegate field");
}
_logger.LogDebug("Finished processing event " + eventt.Name);
}
private static void ProcessAddMethod(MethodDefinition addMethod, WeakEventWeaver weakEventWeaver)
{
var weakEventHandler = weakEventWeaver.CreateEventHandlerVariable(addMethod);
var makeWeak = weakEventWeaver.GenerateMakeWeakIl(addMethod, weakEventWeaver.AddUnsubscribeMethod(), weakEventHandler);
int oldCodeIndex = addMethod.InsertInstructions(makeWeak, 0);
// Now replace any further use of the method parameter (Ldarg_1, or Ldarg_0 if static) with the weak event handler
var instructionToReplace = GetMethodLoadFirstArgumentCode(addMethod);
var instructions = addMethod.Body.Instructions;
for (int i = oldCodeIndex; i < instructions.Count; i++)
{
if (instructions[i].OpCode.Code.Equals(instructionToReplace))
{
instructions[i] = Instruction.Create(OpCodes.Ldloc, weakEventHandler);
}
}
}
private static void ProcessAddMethod(MethodDefinition addMethod, WeakEventWeaver weakEventWeaver)
{
var weakEventHandler = weakEventWeaver.CreateEventHandlerVariable(addMethod);
var makeWeak = weakEventWeaver.GenerateMakeWeakIl(addMethod, weakEventWeaver.AddUnsubscribeMethod(), weakEventHandler);
int oldCodeIndex = addMethod.InsertInstructions(makeWeak, 0);
// Now replace any further use of the method parameter (Ldarg_1, or Ldarg_0 if static) with the weak event handler
var instructionToReplace = GetMethodLoadFirstArgumentCode(addMethod);
var instructions = addMethod.Body.Instructions;
for (int i = oldCodeIndex; i < instructions.Count; i++)
{
if (instructions[i].OpCode.Code.Equals(instructionToReplace))
{
instructions[i] = Instruction.Create(OpCodes.Ldloc, weakEventHandler);
}
}
}