1 files changed, 79 insertions, 0 deletions
diff --git a/app/Core/Registry.php b/app/Core/Registry.php
new file mode 100644
index 00000000..f11d427c
--- /dev/null
+++ b/app/Core/Registry.php
@@ -0,0 +1,79 @@
+<?php
+
+namespace Core;
+
+/**
+ * The registry class is a dependency injection container
+ *
+ * @package core
+ * @author  Frederic Guillot
+ */
+class Registry
+{
+    /**
+     * Contains all dependencies
+     *
+     * @access private
+     * @var array
+     */
+    private $container = array();
+
+    /**
+     * Contains all instances
+     *
+     * @access private
+     * @var array
+     */
+    private $instances = array();
+
+    /**
+     * Set a dependency
+     *
+     * @access public
+     * @param  string   $name   Unique identifier for the service/parameter
+     * @param  mixed    $value  The value of the parameter or a closure to define an object
+     */
+    public function __set($name, $value)
+    {
+        $this->container[$name] = $value;
+    }
+
+    /**
+     * Get a dependency
+     *
+     * @access public
+     * @param  string   $name   Unique identifier for the service/parameter
+     * @return mixed            The value of the parameter or an object
+     * @throws RuntimeException If the identifier is not found
+     */
+    public function __get($name)
+    {
+        if (isset($this->container[$name])) {
+
+            if (is_callable($this->container[$name])) {
+                return $this->container[$name]();
+            }
+            else {
+                return $this->container[$name];
+            }
+        }
+
+        throw new \RuntimeException('Identifier not found in the registry: '.$name);
+    }
+
+    /**
+     * Return a shared instance of a dependency
+     *
+     * @access public
+     * @param  string   $name   Unique identifier for the service/parameter
+     * @return mixed            Same object instance of the dependency
+     */
+    public function shared($name)
+    {
+        if (! isset($this->instances[$name])) {
+            $this->instances[$name] = $this->$name;
+        }
+
+        return $this->instances[$name];
+    }
+}