--- /dev/null
+<?php
+/*
+ * 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
+ * OWNER OR 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.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\Common\Collections;
+
+use ArrayIterator;
+use Closure;
+use Doctrine\Common\Collections\Expr\ClosureExpressionVisitor;
+
+/**
+ * An ArrayCollection is a Collection implementation that wraps a regular PHP array.
+ *
+ * @since 2.0
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author Jonathan Wage <jonwage@gmail.com>
+ * @author Roman Borschel <roman@code-factory.org>
+ */
+class ArrayCollection implements Collection, Selectable
+{
+ /**
+ * An array containing the entries of this collection.
+ *
+ * @var array
+ */
+ private $elements;
+
+ /**
+ * Initializes a new ArrayCollection.
+ *
+ * @param array $elements
+ */
+ public function __construct(array $elements = array())
+ {
+ $this->elements = $elements;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function toArray()
+ {
+ return $this->elements;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function first()
+ {
+ return reset($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function last()
+ {
+ return end($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function key()
+ {
+ return key($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function next()
+ {
+ return next($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function current()
+ {
+ return current($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function remove($key)
+ {
+ if ( ! isset($this->elements[$key]) && ! array_key_exists($key, $this->elements)) {
+ return null;
+ }
+
+ $removed = $this->elements[$key];
+ unset($this->elements[$key]);
+
+ return $removed;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function removeElement($element)
+ {
+ $key = array_search($element, $this->elements, true);
+
+ if ($key === false) {
+ return false;
+ }
+
+ unset($this->elements[$key]);
+
+ return true;
+ }
+
+ /**
+ * Required by interface ArrayAccess.
+ *
+ * {@inheritDoc}
+ */
+ public function offsetExists($offset)
+ {
+ return $this->containsKey($offset);
+ }
+
+ /**
+ * Required by interface ArrayAccess.
+ *
+ * {@inheritDoc}
+ */
+ public function offsetGet($offset)
+ {
+ return $this->get($offset);
+ }
+
+ /**
+ * Required by interface ArrayAccess.
+ *
+ * {@inheritDoc}
+ */
+ public function offsetSet($offset, $value)
+ {
+ if ( ! isset($offset)) {
+ return $this->add($value);
+ }
+
+ $this->set($offset, $value);
+ }
+
+ /**
+ * Required by interface ArrayAccess.
+ *
+ * {@inheritDoc}
+ */
+ public function offsetUnset($offset)
+ {
+ return $this->remove($offset);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function containsKey($key)
+ {
+ return isset($this->elements[$key]) || array_key_exists($key, $this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function contains($element)
+ {
+ return in_array($element, $this->elements, true);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function exists(Closure $p)
+ {
+ foreach ($this->elements as $key => $element) {
+ if ($p($key, $element)) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function indexOf($element)
+ {
+ return array_search($element, $this->elements, true);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function get($key)
+ {
+ return isset($this->elements[$key]) ? $this->elements[$key] : null;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function getKeys()
+ {
+ return array_keys($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function getValues()
+ {
+ return array_values($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function count()
+ {
+ return count($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function set($key, $value)
+ {
+ $this->elements[$key] = $value;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function add($value)
+ {
+ $this->elements[] = $value;
+
+ return true;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function isEmpty()
+ {
+ return empty($this->elements);
+ }
+
+ /**
+ * Required by interface IteratorAggregate.
+ *
+ * {@inheritDoc}
+ */
+ public function getIterator()
+ {
+ return new ArrayIterator($this->elements);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function map(Closure $func)
+ {
+ return new static(array_map($func, $this->elements));
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function filter(Closure $p)
+ {
+ return new static(array_filter($this->elements, $p));
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function forAll(Closure $p)
+ {
+ foreach ($this->elements as $key => $element) {
+ if ( ! $p($key, $element)) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function partition(Closure $p)
+ {
+ $matches = $noMatches = array();
+
+ foreach ($this->elements as $key => $element) {
+ if ($p($key, $element)) {
+ $matches[$key] = $element;
+ } else {
+ $noMatches[$key] = $element;
+ }
+ }
+
+ return array(new static($matches), new static($noMatches));
+ }
+
+ /**
+ * Returns a string representation of this object.
+ *
+ * @return string
+ */
+ public function __toString()
+ {
+ return __CLASS__ . '@' . spl_object_hash($this);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function clear()
+ {
+ $this->elements = array();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function slice($offset, $length = null)
+ {
+ return array_slice($this->elements, $offset, $length, true);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public function matching(Criteria $criteria)
+ {
+ $expr = $criteria->getWhereExpression();
+ $filtered = $this->elements;
+
+ if ($expr) {
+ $visitor = new ClosureExpressionVisitor();
+ $filter = $visitor->dispatch($expr);
+ $filtered = array_filter($filtered, $filter);
+ }
+
+ if ($orderings = $criteria->getOrderings()) {
+ foreach (array_reverse($orderings) as $field => $ordering) {
+ $next = ClosureExpressionVisitor::sortByField($field, $ordering == Criteria::DESC ? -1 : 1);
+ }
+
+ uasort($filtered, $next);
+ }
+
+ $offset = $criteria->getFirstResult();
+ $length = $criteria->getMaxResults();
+
+ if ($offset || $length) {
+ $filtered = array_slice($filtered, (int)$offset, $length);
+ }
+
+ return new static($filtered);
+ }
+}
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