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+<?php
+
+/**
+ * Hoa
+ *
+ *
+ * @license
+ *
+ * New BSD License
+ *
+ * Copyright © 2007-2017, Hoa community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Hoa nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+namespace Hoa\Iterator;
+
+/**
+ * Class \Hoa\Iterator\Multiple.
+ *
+ * Extending the SPL MultipleIterator class.
+ *
+ * @copyright Copyright © 2007-2017 Hoa community
+ * @license New BSD License
+ */
+class Multiple extends \MultipleIterator
+{
+ /**
+ * Default value for each $infos.
+ *
+ * @var array
+ */
+ protected $_infos = [];
+
+
+
+ /**
+ * Attach iterator informations.
+ * Add the $default argument that will be use when the iterator has reached
+ * its end.
+ *
+ * @param \Iterator $iterator Iterator.
+ * @param string $infos Informations to attach.
+ * @param mixed $default Default value.
+ * @return void
+ */
+ public function attachIterator(
+ \Iterator $iterator,
+ $infos = null,
+ $default = null
+ ) {
+ $out = parent::attachIterator($iterator, $infos);
+
+ if (null === $infos) {
+ $this->_infos[] = $default;
+ } else {
+ $this->_infos[$infos] = $default;
+ }
+
+ return $out;
+ }
+
+ /**
+ * Get the registered iterator instances.
+ *
+ * @return array
+ */
+ public function current()
+ {
+ $out = parent::current();
+
+ foreach ($out as $key => &$value) {
+ if (null === $value) {
+ $value = $this->_infos[$key];
+ }
+ }
+
+ return $out;
+ }
+}