Add Clear to ILProcessor

[MichalPetryka]

Clear can be useful when you need to rewrite a method from scratch.

[jbevain]

Thanks!

[ltrzesniewski]

Hmmm.... If you want to rewrite a method from scratch, there's a whole lot of other stuff you need to remove. I'm doing the following in a project of mine:

method.Body.Instructions.Clear();
method.Body.Variables.Clear();
method.Body.ExceptionHandlers.Clear();

method.DebugInformation.SequencePoints.Clear();
method.DebugInformation.Scope = null;
method.DebugInformation.StateMachineKickOffMethod = null;

method.CustomDebugInformations.Clear();

On the other hand, the ILProcessor only deals with the instruction list today, so I suppose making it clear a bunch of other stuff would not be appropriate.

[jbevain]

@ltrzesniewski yeah I think that's a different subject. At that point you might be better off creating a new method body.