Revert "My first commit of codes"

This reverts commit a6e5a69348.

vendor/psy/psysh/src/Psy/Context.php

@@ -1,136 +0,0 @@
-<?php
-
-/*
- * This file is part of Psy Shell
- *
- * (c) 2012-2014 Justin Hileman
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Psy;
-
-/**
- * The Shell execution context.
- *
- * This class encapsulates the current variables, most recent return value and
- * exception, and the current namespace.
- */
-class Context
-{
-    private static $specialVars = array('_', '_e', '__psysh__');
-    private $scopeVariables = array();
-    private $lastException;
-    private $returnValue;
-
-    /**
-     * Get a context variable.
-     *
-     * @throws InvalidArgumentException If the variable is not found in the current context.
-     *
-     * @param string $name
-     *
-     * @return mixed
-     */
-    public function get($name)
-    {
-        switch ($name) {
-            case '_':
-                return $this->returnValue;
-
-            case '_e':
-                if (!isset($this->lastException)) {
-                    throw new \InvalidArgumentException('Unknown variable: $' . $name);
-                }
-
-                return $this->lastException;
-
-            default:
-                if (!array_key_exists($name, $this->scopeVariables)) {
-                    throw new \InvalidArgumentException('Unknown variable: $' . $name);
-                }
-
-                return $this->scopeVariables[$name];
-        }
-    }
-
-    /**
-     * Get all defined variables.
-     *
-     * @return array
-     */
-    public function getAll()
-    {
-        $vars = $this->scopeVariables;
-        $vars['_'] = $this->returnValue;
-
-        if (isset($this->lastException)) {
-            $vars['_e'] = $this->lastException;
-        }
-
-        return $vars;
-    }
-
-    /**
-     * Set all scope variables.
-     *
-     * This method does *not* set the magic $_ and $_e variables.
-     *
-     * @param array $vars
-     */
-    public function setAll(array $vars)
-    {
-        foreach (self::$specialVars as $key) {
-            unset($vars[$key]);
-        }
-
-        $this->scopeVariables = $vars;
-    }
-
-    /**
-     * Set the most recent return value.
-     *
-     * @param mixed $value
-     */
-    public function setReturnValue($value)
-    {
-        $this->returnValue = $value;
-    }
-
-    /**
-     * Get the most recent return value.
-     *
-     * @return mixed
-     */
-    public function getReturnValue()
-    {
-        return $this->returnValue;
-    }
-
-    /**
-     * Set the most recent Exception.
-     *
-     * @param \Exception $e
-     */
-    public function setLastException(\Exception $e)
-    {
-        $this->lastException = $e;
-    }
-
-    /**
-     * Get the most recent Exception.
-     *
-     * @throws InvalidArgumentException If no Exception has been caught.
-     *
-     * @return null|Exception
-     */
-    public function getLastException()
-    {
-        if (!isset($this->lastException)) {
-            throw new \InvalidArgumentException('No most-recent exception');
-        }
-
-        return $this->lastException;
-    }
-}