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vendor/phpspec/prophecy/src/Prophecy/Doubler/LazyDouble.php

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+<?php
+
+/*
+ * This file is part of the Prophecy.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *     Marcello Duarte <marcello.duarte@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Prophecy\Doubler;
+
+use Prophecy\Exception\Doubler\DoubleException;
+use Prophecy\Exception\Doubler\ClassNotFoundException;
+use Prophecy\Exception\Doubler\InterfaceNotFoundException;
+use ReflectionClass;
+
+/**
+ * Lazy double.
+ * Gives simple interface to describe double before creating it.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+class LazyDouble
+{
+    private $doubler;
+    private $class;
+    private $interfaces = array();
+    private $arguments  = null;
+    private $double;
+
+    /**
+     * Initializes lazy double.
+     *
+     * @param Doubler $doubler
+     */
+    public function __construct(Doubler $doubler)
+    {
+        $this->doubler = $doubler;
+    }
+
+    /**
+     * Tells doubler to use specific class as parent one for double.
+     *
+     * @param string|ReflectionClass $class
+     *
+     * @throws \Prophecy\Exception\Doubler\ClassNotFoundException
+     * @throws \Prophecy\Exception\Doubler\DoubleException
+     */
+    public function setParentClass($class)
+    {
+        if (null !== $this->double) {
+            throw new DoubleException('Can not extend class with already instantiated double.');
+        }
+
+        if (!$class instanceof ReflectionClass) {
+            if (!class_exists($class)) {
+                throw new ClassNotFoundException(sprintf('Class %s not found.', $class), $class);
+            }
+
+            $class = new ReflectionClass($class);
+        }
+
+        $this->class = $class;
+    }
+
+    /**
+     * Tells doubler to implement specific interface with double.
+     *
+     * @param string|ReflectionClass $interface
+     *
+     * @throws \Prophecy\Exception\Doubler\InterfaceNotFoundException
+     * @throws \Prophecy\Exception\Doubler\DoubleException
+     */
+    public function addInterface($interface)
+    {
+        if (null !== $this->double) {
+            throw new DoubleException(
+                'Can not implement interface with already instantiated double.'
+            );
+        }
+
+        if (!$interface instanceof ReflectionClass) {
+            if (!interface_exists($interface)) {
+                throw new InterfaceNotFoundException(
+                    sprintf('Interface %s not found.', $interface),
+                    $interface
+                );
+            }
+
+            $interface = new ReflectionClass($interface);
+        }
+
+        $this->interfaces[] = $interface;
+    }
+
+    /**
+     * Sets constructor arguments.
+     *
+     * @param array $arguments
+     */
+    public function setArguments(array $arguments = null)
+    {
+        $this->arguments = $arguments;
+    }
+
+    /**
+     * Creates double instance or returns already created one.
+     *
+     * @return DoubleInterface
+     */
+    public function getInstance()
+    {
+        if (null === $this->double) {
+            if (null !== $this->arguments) {
+                return $this->double = $this->doubler->double(
+                    $this->class, $this->interfaces, $this->arguments
+                );
+            }
+
+            $this->double = $this->doubler->double($this->class, $this->interfaces);
+        }
+
+        return $this->double;
+    }
+}