Mono.Cecil.Fluent.FluentEmitter.EndIf C# (CSharp) Method

		public FluentEmitter EndIf()
		{
			if(IfBlocks.Count == 0)
				throw new NotSupportedException("no if-block to close");

			var block = IfBlocks.Pop();

			if (block.StartInstruction?.Previous.OpCode == OpCodes.Ret)
			{
				Body.Instructions.Remove(block.StartInstruction);
				return this;
			}

			var firstinstructionafterblock = LastEmittedInstruction.Next;
			if(firstinstructionafterblock == null)
			{
				Nop();
				firstinstructionafterblock = LastEmittedInstruction;
			}

			if(block.IsDoublePop)
				Body.GetILProcessor().Remove(block.StartInstruction?.Next);

			var newstartinstruction = Instruction.Create(block.OpCode, firstinstructionafterblock);
			Body.GetILProcessor().Replace(block.StartInstruction, newstartinstruction);

			// remove Nops
			Func<FluentEmitter, bool> postemitaction = (body) =>
			{
				if (firstinstructionafterblock.Next == null)
					return false;
				foreach (var instruction in body.Body.Instructions.Where(i => i.Operand == firstinstructionafterblock))
					instruction.Operand = firstinstructionafterblock.Next;
				Body.GetILProcessor().Remove(firstinstructionafterblock);
				return true;
			};

			PostEmitActions.Enqueue(postemitaction);
			
			return this;
		}
	}