+/** class Extensible is the parent class of many classes such as User and Channel.
+ * class Extensible implements a system which allows modules to 'extend' the class by attaching data within
+ * a map associated with the object. In this way modules can store their own custom information within user
+ * objects, channel objects and server objects, without breaking other modules (this is more sensible than using
+ * a flags variable, and each module defining bits within the flag as 'theirs' as it is less prone to conflict and
+ * supports arbitary data storage).
+ */
+class CoreExport Extensible : public classbase
+{
+ /** Private data store.
+ * Holds all extensible metadata for the class.
+ */
+ ExtensibleStore Extension_Items;
+
+public:
+
+ /** Extend an Extensible class.
+ *
+ * @param key The key parameter is an arbitary string which identifies the extension data
+ * @param p This parameter is a pointer to any data you wish to associate with the object
+ *
+ * You must provide a key to store the data as via the parameter 'key' and store the data
+ * in the templated parameter 'p'.
+ * The data will be inserted into the map. If the data already exists, you may not insert it
+ * twice, Extensible::Extend will return false in this case.
+ *
+ * @return Returns true on success, false if otherwise
+ */
+ template<typename T> bool Extend(const std::string &key, T* p)
+ {
+ /* This will only add an item if it doesnt already exist,
+ * the return value is a std::pair of an iterator to the
+ * element, and a bool saying if it was actually inserted.
+ */
+ return this->Extension_Items.insert(std::make_pair(key, (char*)p)).second;
+ }
+
+ /** Extend an Extensible class.
+ *
+ * @param key The key parameter is an arbitary string which identifies the extension data
+ *
+ * You must provide a key to store the data as via the parameter 'key', this single-parameter
+ * version takes no 'data' parameter, this is used purely for boolean values.
+ * The key will be inserted into the map with a NULL 'data' pointer. If the key already exists
+ * then you may not insert it twice, Extensible::Extend will return false in this case.
+ *
+ * @return Returns true on success, false if otherwise
+ */
+ bool Extend(const std::string &key)
+ {
+ /* This will only add an item if it doesnt already exist,
+ * the return value is a std::pair of an iterator to the
+ * element, and a bool saying if it was actually inserted.
+ */
+ return this->Extension_Items.insert(std::make_pair(key, (char*)NULL)).second;
+ }
+
+ /** Shrink an Extensible class.
+ *
+ * @param key The key parameter is an arbitary string which identifies the extension data
+ *
+ * You must provide a key name. The given key name will be removed from the classes data. If
+ * you provide a nonexistent key (case is important) then the function will return false.
+ * @return Returns true on success.
+ */
+ bool Shrink(const std::string &key);
+
+ /** Get an extension item.
+ *
+ * @param key The key parameter is an arbitary string which identifies the extension data
+ * @param p If you provide a non-existent key, this value will be NULL. Otherwise a pointer to the item you requested will be placed in this templated parameter.
+ * @return Returns true if the item was found and false if it was nor, regardless of wether 'p' is NULL. This allows you to store NULL values in Extensible.
+ */
+ template<typename T> bool GetExt(const std::string &key, T* &p)
+ {
+ ExtensibleStore::iterator iter = this->Extension_Items.find(key); /* Find the item */
+ if(iter != this->Extension_Items.end())
+ {
+ p = (T*)iter->second; /* Item found */
+ return true;
+ }
+ else
+ {
+ p = NULL; /* Item not found */
+ return false;
+ }
+ }
+
+ /** Get an extension item.
+ *
+ * @param key The key parameter is an arbitary string which identifies the extension data
+ * @return Returns true if the item was found and false if it was not.
+ *
+ * This single-parameter version only checks if the key exists, it does nothing with
+ * the 'data' field and is probably only useful in conjunction with the single-parameter
+ * version of Extend().
+ */
+ bool GetExt(const std::string &key)
+ {
+ return (this->Extension_Items.find(key) != this->Extension_Items.end());
+ }
+
+ /** Get a list of all extension items names.
+ * @param list A deque of strings to receive the list
+ * @return This function writes a list of all extension items stored in this object by name into the given deque and returns void.
+ */
+ void GetExtList(std::deque<std::string> &list);
+};
+
+/** BoolSet is a utility class designed to hold eight bools in a bitmask.
+ * Use BoolSet::Set and BoolSet::Get to set and get bools in the bitmask,
+ * and Unset and Invert for special operations upon them.
+ */
+class CoreExport BoolSet : public classbase
+{
+ /** Actual bit values */
+ char bits;
+
+ public:
+
+ /** The default constructor initializes the BoolSet to all values unset.
+ */
+ BoolSet();
+
+ /** This constructor copies the default bitmask from a char
+ */
+ BoolSet(char bitmask);