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engines/ultima/nuvie/misc/u6_llist.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef NUVIE_MISC_U6_LIST_H
+#define NUVIE_MISC_U6_LIST_H
+
+namespace Ultima {
+namespace Nuvie {
+
+#define U6LLIST_FREE_DATA true
+
+struct U6Link {
+	U6Link *next;
+	U6Link *prev;
+	void *data;
+	uint8 ref_count;
+	U6Link() {
+		next = nullptr;
+		prev = nullptr;
+		data = nullptr;
+		ref_count = 1;
+	}
+};
+
+void retainU6Link(U6Link *link);
+void releaseU6Link(U6Link *link);
+
+class U6LList {
+	U6Link *head;
+	U6Link *tail;
+
+public:
+
+	U6LList();
+	~U6LList();
+
+	bool add(void *data);
+	bool addAtPos(uint32 pos, void *data);
+
+	uint32 findPos(void *data);
+	bool replace(void *old_data, void *new_data);
+
+	bool remove(void *data);
+	bool removeAll();
+
+	uint32 count() const;
+
+	U6Link *start();
+	U6Link *end();
+	const U6Link *start() const;
+	const U6Link *end() const;
+
+	U6Link *gotoPos(uint32 pos);
+};
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#endif