System.Xml.Xsl.XsltOld.XsltCompileContext.FuncExtension.FuncExtension C# (CSharp) 메소드

            public FuncExtension(object extension, MethodInfo method, PermissionSet permissions) {
                Debug.Assert(extension != null);
                Debug.Assert(method    != null);
                this.extension   = extension;
                this.method      = method;
                this.permissions = permissions;
                XPathResultType returnType = GetXPathType(method.ReturnType);

                ParameterInfo[] parameters = method.GetParameters();
                int minArgs = parameters.Length;
                int maxArgs = parameters.Length;
                this.typeCodes = new TypeCode[parameters.Length];
                XPathResultType[] argTypes = new XPathResultType[parameters.Length];
                bool optionalParams = true; // we allow only last params be optional. Set false on the first non optional.
                for (int i = parameters.Length - 1; 0 <= i; i --) {            // Revers order is essential: counting optional parameters
                    typeCodes[i] = Type.GetTypeCode(parameters[i].ParameterType);
                    argTypes[i] = GetXPathType(parameters[i].ParameterType);
                    if(optionalParams) {
                        if(parameters[i].IsOptional) {
                            minArgs --;
                        } else {
                            optionalParams = false;
                        }
                    }
                }
                base.Init(minArgs, maxArgs, returnType, argTypes);
            }