--- /dev/null
+<?php
+/**
+ * A FiFo Stacker class
+ *
+ * @author Roland Haeder <webmaster@shipsimu.org>
+ * @version 0.0.0
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Core Developer Team
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.shipsimu.org
+ *
+ * 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/>.
+ */
+class FiFoStacker extends BaseStacker implements Stackable {
+ /**
+ * Protected constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+ }
+
+ /**
+ * Creates an instance of the class Stacker and prepares it for usage
+ *
+ * @return $stackInstance An instance of FiFoStacker
+ */
+ public static final function createFiFoStacker () {
+ // Get a new instance
+ $stackInstance = new FiFoStacker();
+
+ // Init generic stacker
+ $stackInstance->initStack('generic');
+
+ // Return the prepared instance
+ return $stackInstance;
+ }
+
+ /**
+ * Pushs a value on a named stacker
+ *
+ * @param $stackerName Name of the stack
+ * @param $value Value to push on it
+ * @return void
+ * @throws StackerFullException If the stack is full
+ */
+ public function pushNamed ($stackerName, $value) {
+ // Call the protected method
+ parent::addValue($stackerName, $value);
+ }
+
+ /**
+ * 'Pops' a value from a named stacker and returns it's value
+ *
+ * @param $stackerName Name of the stack
+ * @return $value Value of the current stack entry
+ * @throws NoStackerException If the named stacker was not found
+ * @throws EmptyStackerException If the named stacker is empty
+ */
+ public function popNamed ($stackerName) {
+ // Get the value
+ $value = $this->getNamed($stackerName);
+
+ // Call the protected method
+ parent::popFirst($stackerName);
+
+ // Return the value
+ return $value;
+ }
+
+ /**
+ * Get value from named stacker
+ *
+ * @param $stackerName Name of the stack
+ * @return $value Value of last added value
+ * @throws NoStackerException If the named stacker was not found
+ * @throws EmptyStackerException If the named stacker is empty
+ */
+ public function getNamed ($stackerName) {
+ // Call the protected method
+ return parent::getFirstValue($stackerName);
+ }
+}
+
+// [EOF]
+?>