Mono.CSharp.Do.DoEmit C# (CSharp) Method

		protected override void DoEmit (EmitContext ec)
		{
			Label loop = ec.DefineLabel ();
			Label old_begin = ec.LoopBegin;
			Label old_end = ec.LoopEnd;
			
			ec.LoopBegin = ec.DefineLabel ();
			ec.LoopEnd = ec.DefineLabel ();
				
			ec.MarkLabel (loop);
			EmbeddedStatement.Emit (ec);
			ec.MarkLabel (ec.LoopBegin);

			//
			// Dead code elimination
			//
			if (expr is Constant){
				bool res = !((Constant) expr).IsDefaultValue;

				expr.EmitSideEffect (ec);
				if (res)
					ec.Emit (OpCodes.Br, loop); 
			} else
				expr.EmitBranchable (ec, loop, true);
			
			ec.MarkLabel (ec.LoopEnd);

			ec.LoopBegin = old_begin;
			ec.LoopEnd = old_end;
		}