QUT.Gplex.Parser.Binary.contextLength C# (CSharp) Method

        internal override int contextLength()
        {
            if (op == RegOp.context) throw new StringInterpretException("multiple context operators");
            else
            {
                int lLen = lKid.contextLength();
                int rLen = rKid.contextLength();
                if (lLen <= 0 || rLen <= 0) return 0;
                else if (op == RegOp.concat) return lLen + rLen;
                else if (lLen == rLen) return lLen;
                else return 0;
            }
        }