new appraoch

pancake/system/vendor/php-http/promise/src/RejectedPromise.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Http\Promise;
+
+/**
+ * A rejected promise.
+ *
+ * @author Joel Wurtz <joel.wurtz@gmail.com>
+ */
+final class RejectedPromise implements Promise
+{
+    /**
+     * @var \Exception
+     */
+    private $exception;
+
+    /**
+     * @param \Exception $exception
+     */
+    public function __construct(\Exception $exception)
+    {
+        $this->exception = $exception;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function then(callable $onFulfilled = null, callable $onRejected = null)
+    {
+        if (null === $onRejected) {
+            return $this;
+        }
+
+        try {
+            return new FulfilledPromise($onRejected($this->exception));
+        } catch (\Exception $e) {
+            return new self($e);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getState()
+    {
+        return Promise::REJECTED;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function wait($unwrap = true)
+    {
+        if ($unwrap) {
+            throw $this->exception;
+        }
+    }
+}