AjScript.Interpreter.Lexer.NextChar C# (CSharp) Метод

        private char? NextChar()
        {
            if (this.chars.Count > 0)
                return this.chars.Pop();

            int ch;

            if (this.isConsole && (this.isFirstChar || this.reader.Peek() < 0))
            {
                Console.Out.Write("> ");
                Console.Out.Flush();
            }

            this.isFirstChar = false;

            ch = this.reader.Read();

            if (ch < 0)
                return null;

            return (char)ch;
        }