SwfDotNet.IO.ByteCode.Compiler.CalcBranchOffsets C# (CSharp) Method

        private void CalcBranchOffsets(ArrayList actionRecord)
        {
            if (actionRecord.Count<1) return;

            ArrayList jumpList = new ArrayList();
            Hashtable labelPos = new Hashtable();

            int pos = 0;
            for (int i=0; i<actionRecord.Count; i++) {

                BaseAction action = (BaseAction) actionRecord[i];
                ActionLabel label = action as ActionLabel;
                IJump jump = action as IJump;

                if (label!=null) {
                    labelPos[label.LabelId] = pos;
                }

                if (jump!=null) {
                    jumpList.Add(new JumpPos(pos,jump));
                }

                // recursively step through function blocks
                ActionDefineFunction f = actionRecord[i] as ActionDefineFunction;
                if (f!=null) CalcBranchOffsets(f.ActionRecord);

                ActionDefineFunction2 f2 = actionRecord[i] as ActionDefineFunction2;
                if (f2!=null) CalcBranchOffsets(f2.ActionRecord);

                pos+=action.ByteCount;
            }

            for (int i=0; i<jumpList.Count; i++) {

                JumpPos j = (JumpPos) jumpList[i];
                int offset = (int)labelPos[j.Jump.LabelId]-j.Position-5;
                j.Jump.Offset = offset;
            }
        }