v.0.1

vendor/illuminate/container/RewindableGenerator.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Illuminate\Container;
+
+use Countable;
+use IteratorAggregate;
+
+class RewindableGenerator implements Countable, IteratorAggregate
+{
+    /**
+     * The generator callback.
+     *
+     * @var callable
+     */
+    protected $generator;
+
+    /**
+     * The number of tagged services.
+     *
+     * @var callable|int
+     */
+    protected $count;
+
+    /**
+     * Create a new generator instance.
+     *
+     * @param  callable  $generator
+     * @param  callable|int  $count
+     * @return void
+     */
+    public function __construct(callable $generator, $count)
+    {
+        $this->count = $count;
+        $this->generator = $generator;
+    }
+
+    /**
+     * Get an iterator from the generator.
+     *
+     * @return mixed
+     */
+    public function getIterator()
+    {
+        return ($this->generator)();
+    }
+
+    /**
+     * Get the total number of tagged services.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        if (is_callable($count = $this->count)) {
+            $this->count = $count();
+        }
+
+        return $this->count;
+    }
+}