Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/console/Input/InputArgument.php

@@ -0,0 +1,132 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console\Input;
+
+/**
+ * Represents a command line argument.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @api
+ */
+class InputArgument
+{
+    const REQUIRED = 1;
+    const OPTIONAL = 2;
+    const IS_ARRAY = 4;
+
+    private $name;
+    private $mode;
+    private $default;
+    private $description;
+
+    /**
+     * Constructor.
+     *
+     * @param string $name        The argument name
+     * @param int    $mode        The argument mode: self::REQUIRED or self::OPTIONAL
+     * @param string $description A description text
+     * @param mixed  $default     The default value (for self::OPTIONAL mode only)
+     *
+     * @throws \InvalidArgumentException When argument mode is not valid
+     *
+     * @api
+     */
+    public function __construct($name, $mode = null, $description = '', $default = null)
+    {
+        if (null === $mode) {
+            $mode = self::OPTIONAL;
+        } elseif (!is_int($mode) || $mode > 7 || $mode < 1) {
+            throw new \InvalidArgumentException(sprintf('Argument mode "%s" is not valid.', $mode));
+        }
+
+        $this->name = $name;
+        $this->mode = $mode;
+        $this->description = $description;
+
+        $this->setDefault($default);
+    }
+
+    /**
+     * Returns the argument name.
+     *
+     * @return string The argument name
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Returns true if the argument is required.
+     *
+     * @return bool true if parameter mode is self::REQUIRED, false otherwise
+     */
+    public function isRequired()
+    {
+        return self::REQUIRED === (self::REQUIRED & $this->mode);
+    }
+
+    /**
+     * Returns true if the argument can take multiple values.
+     *
+     * @return bool true if mode is self::IS_ARRAY, false otherwise
+     */
+    public function isArray()
+    {
+        return self::IS_ARRAY === (self::IS_ARRAY & $this->mode);
+    }
+
+    /**
+     * Sets the default value.
+     *
+     * @param mixed $default The default value
+     *
+     * @throws \LogicException When incorrect default value is given
+     */
+    public function setDefault($default = null)
+    {
+        if (self::REQUIRED === $this->mode && null !== $default) {
+            throw new \LogicException('Cannot set a default value except for InputArgument::OPTIONAL mode.');
+        }
+
+        if ($this->isArray()) {
+            if (null === $default) {
+                $default = array();
+            } elseif (!is_array($default)) {
+                throw new \LogicException('A default value for an array argument must be an array.');
+            }
+        }
+
+        $this->default = $default;
+    }
+
+    /**
+     * Returns the default value.
+     *
+     * @return mixed The default value
+     */
+    public function getDefault()
+    {
+        return $this->default;
+    }
+
+    /**
+     * Returns the description text.
+     *
+     * @return string The description text
+     */
+    public function getDescription()
+    {
+        return $this->description;
+    }
+}