initial commit

lib/packages/League/Container/ReflectionContainer.php

@@ -0,0 +1,125 @@
+<?php declare(strict_types=1);
+
+namespace Automattic\WooCommerce\Vendor\League\Container;
+
+use Automattic\WooCommerce\Vendor\League\Container\Argument\{ArgumentResolverInterface, ArgumentResolverTrait};
+use Automattic\WooCommerce\Vendor\League\Container\Exception\NotFoundException;
+use Psr\Container\ContainerInterface;
+use ReflectionClass;
+use ReflectionException;
+use ReflectionFunction;
+use ReflectionMethod;
+
+class ReflectionContainer implements ArgumentResolverInterface, ContainerInterface
+{
+    use ArgumentResolverTrait;
+    use ContainerAwareTrait;
+
+    /**
+     * @var boolean
+     */
+    protected $cacheResolutions = false;
+
+    /**
+     * Cache of resolutions.
+     *
+     * @var array
+     */
+    protected $cache = [];
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws ReflectionException
+     */
+    public function get($id, array $args = [])
+    {
+        if ($this->cacheResolutions === true && array_key_exists($id, $this->cache)) {
+            return $this->cache[$id];
+        }
+
+        if (! $this->has($id)) {
+            throw new NotFoundException(
+                sprintf('Alias (%s) is not an existing class and therefore cannot be resolved', $id)
+            );
+        }
+
+        $reflector = new ReflectionClass($id);
+        $construct = $reflector->getConstructor();
+
+        $resolution = $construct === null
+            ? new $id
+            : $resolution = $reflector->newInstanceArgs($this->reflectArguments($construct, $args))
+        ;
+
+        if ($this->cacheResolutions === true) {
+            $this->cache[$id] = $resolution;
+        }
+
+        return $resolution;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function has($id) : bool
+    {
+        return class_exists($id);
+    }
+
+    /**
+     * Invoke a callable via the container.
+     *
+     * @param callable $callable
+     * @param array    $args
+     *
+     * @return mixed
+     *
+     * @throws ReflectionException
+     */
+    public function call(callable $callable, array $args = [])
+    {
+        if (is_string($callable) && strpos($callable, '::') !== false) {
+            $callable = explode('::', $callable);
+        }
+
+        if (is_array($callable)) {
+            if (is_string($callable[0])) {
+                $callable[0] = $this->getContainer()->get($callable[0]);
+            }
+
+            $reflection = new ReflectionMethod($callable[0], $callable[1]);
+
+            if ($reflection->isStatic()) {
+                $callable[0] = null;
+            }
+
+            return $reflection->invokeArgs($callable[0], $this->reflectArguments($reflection, $args));
+        }
+
+        if (is_object($callable)) {
+            $reflection = new ReflectionMethod($callable, '__invoke');
+
+            return $reflection->invokeArgs($callable, $this->reflectArguments($reflection, $args));
+        }
+
+        $reflection = new ReflectionFunction(\Closure::fromCallable($callable));
+
+        return $reflection->invokeArgs($this->reflectArguments($reflection, $args));
+    }
+
+    /**
+     * Whether the container should default to caching resolutions and returning
+     * the cache on following calls.
+     *
+     * @param boolean $option
+     *
+     * @return self
+     */
+    public function cacheResolutions(bool $option = true) : ContainerInterface
+    {
+        $this->cacheResolutions = $option;
+
+        return $this;
+    }
+}