private bool IsFaultOrFinally(Handler handler)
{
return(CodeProvider.IsFaultHandler(handler) || CodeProvider.IsFinallyHandler(handler));
}
public override BlockWithLabels <Label> RecordInformationForNewBlock(Label currentLabel, BlockWithLabels <Label> previousBlock)
{
BlockWithLabels <Label> result = null;
Queue <Handler> handlerEnd = GetHandlerEnd(currentLabel);
if (handlerEnd != null)
{
foreach (Handler handler in handlerEnd)
{
this.subroutine_stack.Head.Commit();
this.subroutine_stack = this.subroutine_stack.Tail;
previousBlock = null;
}
}
Queue <Handler> tryEnd = GetTryEnd(currentLabel);
if (tryEnd != null)
{
foreach (Handler handler in tryEnd)
{
if (!Equals(handler, CurrentProtectingHanlders.Head))
{
throw new InvalidOperationException("wrong handler");
}
CurrentProtectingHanlders = CurrentProtectingHanlders.Tail;
}
}
Handler handler1;
if (IsHandlerStart(currentLabel, out handler1))
{
if (IsFaultOrFinally(handler1))
{
SubroutineWithHandlers <Label, Handler> sub = !CodeProvider.IsFaultHandler(handler1)
? new FinallySubroutine <Label, Handler> (this.SubroutineFacade, currentLabel, this)
: (FaultFinallySubroutineBase <Label, Handler>) new FaultSubroutine <Label, Handler> (this.SubroutineFacade, currentLabel, this);
CurrentSubroutineWithHandlers.FaultFinallySubroutines.Add(handler1, sub);
this.subroutine_stack = this.subroutine_stack.Cons(sub);
previousBlock = null;
}
else
{
result = CurrentSubroutineWithHandlers.CreateCatchFilterHeader(handler1, currentLabel);
}
}
if (result == null)
{
result = base.RecordInformationForNewBlock(currentLabel, previousBlock);
}
Stack <Handler> tryStart = GetTryStart(currentLabel);
if (tryStart != null)
{
foreach (Handler handler in tryStart)
{
CurrentProtectingHanlders = CurrentProtectingHanlders.Cons(handler);
}
}
CurrentSubroutineWithHandlers.ProtectingHandlers.Add(result, CurrentProtectingHanlders);
return(result);
}