+struct OptionsMap;
+
+/// UCIOption class implements an option as defined by UCI protocol
+class UCIOption {
+
+ typedef void (Fn)(const UCIOption&);
+
+public:
+ UCIOption(Fn* = NULL);
+ UCIOption(bool v, Fn* = NULL);
+ UCIOption(const char* v, Fn* = NULL);
+ UCIOption(int v, int min, int max, Fn* = NULL);
+
+ UCIOption& operator=(const std::string& v);
+
+ operator int() const {
+ assert(type == "check" || type == "spin");
+ return (type == "spin" ? atoi(currentValue.c_str()) : currentValue == "true");
+ }
+
+ operator std::string() const {
+ assert(type == "string");
+ return currentValue;
+ }
+
+private:
+ friend std::ostream& operator<<(std::ostream&, const OptionsMap&);
+
+ std::string defaultValue, currentValue, type;
+ int min, max;
+ size_t idx;
+ Fn* on_change;
+};
+
+
+/// Custom comparator because UCI options should be case insensitive
+struct CaseInsensitiveLess {
+ bool operator() (const std::string&, const std::string&) const;
+};
+