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common/queue.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 COMMON_QUEUE_H
+#define COMMON_QUEUE_H
+
+#include "common/scummsys.h"
+#include "common/list.h"
+
+namespace Common {
+
+/**
+ * @defgroup common_queue Queue
+ * @ingroup common
+ *
+ * @brief API and templates for queues.
+ * @{
+ */
+
+/**
+ * Variable size Queue class, implemented using our List class.
+ */
+template<class T>
+class Queue {
+//public:
+//	typedef T value_type;
+
+public:
+	bool empty() const {
+		return _impl.empty();
+	}
+
+	void clear() {
+		_impl.clear();
+	}
+
+	template<class... TArgs>
+	void emplace(TArgs&&... args) {
+		_impl.emplace_back(Common::forward<TArgs>(args)...);
+	}
+
+	void push(const T &x) {
+		_impl.push_back(x);
+	}
+
+	void push(T &&x) {
+		_impl.push_back(Common::move(x));
+	}
+
+	T &front() {
+		return _impl.front();
+	}
+
+	const T &front() const {
+		return _impl.front();
+	}
+
+	T &back() {
+		return _impl.back();
+	}
+
+	const T &back() const {
+		return _impl.back();
+	}
+
+	T pop() {
+		T tmp = Common::move(front());
+		_impl.pop_front();
+		return tmp;
+	}
+
+	int size() const {
+		return _impl.size();
+	}
+
+private:
+	List<T>	_impl;
+};
+
+/** @} */
+
+} // End of namespace Common
+
+#endif