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system/src/Grav/Framework/Object/Access/ArrayAccessTrait.php

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+<?php
+/**
+ * @package    Grav\Framework\Object
+ *
+ * @copyright  Copyright (C) 2015 - 2018 Trilby Media, LLC. All rights reserved.
+ * @license    MIT License; see LICENSE file for details.
+ */
+
+namespace Grav\Framework\Object\Access;
+
+/**
+ * ArrayAccess Object Trait
+ * @package Grav\Framework\Object
+ */
+trait ArrayAccessTrait
+{
+    /**
+     * Whether or not an offset exists.
+     *
+     * @param mixed $offset  An offset to check for.
+     * @return bool          Returns TRUE on success or FALSE on failure.
+     */
+    public function offsetExists($offset)
+    {
+        return $this->hasProperty($offset);
+    }
+
+    /**
+     * Returns the value at specified offset.
+     *
+     * @param mixed $offset  The offset to retrieve.
+     * @return mixed         Can return all value types.
+     */
+    public function offsetGet($offset)
+    {
+        return $this->getProperty($offset);
+    }
+
+    /**
+     * Assigns a value to the specified offset.
+     *
+     * @param mixed $offset  The offset to assign the value to.
+     * @param mixed $value   The value to set.
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->setProperty($offset, $value);
+    }
+
+    /**
+     * Unsets an offset.
+     *
+     * @param mixed $offset  The offset to unset.
+     */
+    public function offsetUnset($offset)
+    {
+        $this->unsetProperty($offset);
+    }
+
+    abstract public function hasProperty($property);
+    abstract public function getProperty($property, $default = null);
+    abstract public function setProperty($property, $value);
+    abstract public function unsetProperty($property);
+}