My first commit of codes

vendor/psy/psysh/.editorconfig

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+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

vendor/psy/psysh/.gitignore

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+vendor/
+composer.lock
+manual/
+__pycache__
+.php_cs.cache

vendor/psy/psysh/.php_cs

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+<?php
+
+use Symfony\CS\Config\Config;
+use Symfony\CS\FixerInterface;
+
+$config = Config::create()
+    // use symfony level and extra fixers:
+    ->level(Symfony\CS\FixerInterface::SYMFONY_LEVEL)
+    ->fixers(array('align_double_arrow', '-concat_without_spaces', 'concat_with_spaces', 'ordered_use', 'strict'))
+    ->setUsingLinter(false);
+
+$finder = $config->getFinder()
+    ->in('src')
+    ->in('test');
+
+return $config;

vendor/psy/psysh/.styleci.yml

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+preset: symfony
+
+enabled:
+  - align_double_arrow
+  - concat_with_spaces
+  - ordered_use
+  - strict
+
+disabled:
+  - concat_without_spaces

vendor/psy/psysh/.travis.yml

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+language: php
+
+php:
+  - 5.3
+  - 5.4
+  - 5.5
+  - 5.6
+  - hhvm
+  - hhvm-nightly
+
+install:
+  - travis_retry composer install --no-interaction --prefer-source
+
+script:
+  - vendor/bin/phpunit
+
+matrix:
+  allow_failures:
+    - php: hhvm
+    - php: hhvm-nightly
+  fast_finish: true

vendor/psy/psysh/CONTRIBUTING.md

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+## Code style
+
+Please make your code look like the other code in the project. PsySH follows [PSR-1](http://php-fig.org/psr/psr-1/) and [PSR-2](http://php-fig.org/psr/psr-2/). The easiest way to do make sure you're following the coding standard is to run `vendor/bin/php-cs-fixer fix` before committing.
+
+
+## Building the manual
+
+```sh
+svn co https://svn.php.net/repository/phpdoc/en/trunk/reference/ php_manual
+bin/build_manual phpdoc_manual ~/.psysh/php_manual.sqlite
+```
+
+To build the manual for another language, switch out `en` above for `de`, `es`, or any of the other languages listed in the README.
+
+[Partial or outdated documentation is available for other languages](http://www.php.net/manual/help-translate.php) but these translations are outdated, so their content may be completely wrong or insecure!

vendor/psy/psysh/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2012-2014 Justin Hileman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+OR OTHER DEALINGS IN THE SOFTWARE.

vendor/psy/psysh/README.md

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+# PsySH
+
+[![Package version](http://img.shields.io/packagist/v/psy/psysh.svg?style=flat-square)](https://packagist.org/packages/psy/psysh)
+[![Build status](http://img.shields.io/travis/bobthecow/psysh/master.svg?style=flat-square)](http://travis-ci.org/bobthecow/psysh)
+[![Made out of awesome](http://img.shields.io/badge/made_out_of_awesome-✓-brightgreen.svg?style=flat-square)](http://psysh.org)
+
+
+## About
+
+PsySH is a runtime developer console, interactive debugger and [REPL](http://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop) for PHP. Learn more at [psysh.org](http://psysh.org/). Check out the [Interactive Debugging in PHP talk from OSCON](https://presentate.com/bobthecow/talks/php-for-pirates) on Presentate.
+
+
+## Installation
+
+Download the `psysh` phar to install:
+
+```
+wget psysh.org/psysh
+chmod +x psysh
+./psysh
+```
+
+It's even awesomer if you put it somewhere in your system path (like `/usr/local/bin` or `~/bin`)!
+
+PsySH [is available via Composer](https://packagist.org/packages/psy/psysh), so you can use it in your project as well:
+
+```
+composer require psy/psysh:@stable
+./vendor/bin/psysh
+```
+
+Or you can use by checking out the the repository directly:
+
+```
+git clone https://github.com/bobthecow/psysh.git
+cd psysh
+./bin/psysh
+```
+
+
+## PsySH configuration
+
+While PsySH strives to detect the right settings automatically, you might want to configure it yourself. Just add a file to `~/.config/psysh/config.php` (or `C:\Users\{USER}\AppData\Roaming\PsySH` on Windows):
+
+```php
+<?php
+
+return array(
+    // In PHP 5.4+, PsySH will default to your `cli.pager` ini setting. If this
+    // is not set, it falls back to `less`. It is recommended that you set up
+    // `cli.pager` in your `php.ini` with your preferred output pager.
+    // 
+    // If you are running PHP 5.3, or if you want to use a different pager only
+    // for Psy shell sessions, you can override it here.
+    'pager' => 'more',
+
+    // Sets the maximum number of entries the history can contain.
+    // If set to zero, the history size is unlimited.
+    'historySize' => 0,
+
+    // If set to true, the history will not keep duplicate entries.
+    // Newest entries override oldest.
+    // This is the equivalent of the HISTCONTROL=erasedups setting in bash.
+    'eraseDuplicates' => false,
+
+    // By default, PsySH will use a 'forking' execution loop if pcntl is
+    // installed. This is by far the best way to use it, but you can override
+    // the default by explicitly enabling or disabling this functionality here.
+    'usePcntl' => false,
+
+    // PsySH uses readline if you have it installed, because interactive input
+    // is pretty awful without it. But you can explicitly disable it if you hate
+    // yourself or something.
+    'useReadline' => false,
+
+    // PsySH automatically inserts semicolons at the end of input if a statement
+    // is missing one. To disable this, set `requireSemicolons` to true.
+    'requireSemicolons' => false,
+
+    // "Default includes" will be included once at the beginning of every PsySH
+    // session. This is a good place to add autoloaders for your favorite
+    // libraries.
+    'defaultIncludes' => array(
+        __DIR__.'/include/bootstrap.php',
+    ),
+
+    // While PsySH ships with a bunch of great commands, it's possible to add
+    // your own for even more awesome. Any Psy command added here will be
+    // available in your Psy shell sessions.
+    'commands' => array(
+        // The `parse` command is a command used in the development of PsySH.
+        // Given a string of PHP code, it pretty-prints the
+        // [PHP Parser](https://github.com/nikic/PHP-Parser) parse tree. It
+        // prolly won't be super useful for most of you, but it's there if you
+        // want to play :)
+        new \Psy\Command\ParseCommand,
+    ),
+
+    // PsySH ships with presenters for scalars, resources, arrays, and objects.
+    // But you're not limited to those presenters. You can enable additional
+    // presenters (like the included MongoCursorPresenter), or write your own!
+    'presenters' => array(
+        new \Psy\Presenter\MongoCursorPresenter,
+    ),
+
+    // You can disable tab completion if you want to. Not sure why you'd want to.
+    'tabCompletion' => false,
+
+    // You can write your own tab completion matchers, too! Here are some that enable
+    // tab completion for MongoDB database and collection names:
+    'tabCompletionMatchers' => array(
+        new \Psy\TabCompletion\Matcher\MongoClientMatcher,
+        new \Psy\TabCompletion\Matcher\MongoDatabaseMatcher,
+    ),
+);
+```
+
+
+## Downloading the manual
+
+The PsySH `doc` command is great for documenting source code, but you'll need a little something extra for PHP core documentation. Download one of the following PHP Manual files and drop it in `~/.local/share/psysh/` (or `C:\Users\{USER}\AppData\Roaming\PsySH` on Windows):
+
+ * **[English](http://psysh.org/manual/en/php_manual.sqlite)**
+ * [Brazilian Portuguese](http://psysh.org/manual/pt_BR/php_manual.sqlite)
+ * [Chinese (Simplified)](http://psysh.org/manual/zh/php_manual.sqlite)
+ * [French](http://psysh.org/manual/fr/php_manual.sqlite)
+ * [German](http://psysh.org/manual/de/php_manual.sqlite)
+ * [Italian](http://psysh.org/manual/it/php_manual.sqlite)
+ * [Japanese](http://psysh.org/manual/ja/php_manual.sqlite)
+ * [Polish](http://psysh.org/manual/pl/php_manual.sqlite)
+ * [Romanian](http://psysh.org/manual/ro/php_manual.sqlite)
+ * [Russian](http://psysh.org/manual/ru/php_manual.sqlite)
+ * [Persian](http://psysh.org/manual/fa/php_manual.sqlite)
+ * [Spanish](http://psysh.org/manual/es/php_manual.sqlite)
+ * [Turkish](http://psysh.org/manual/tr/php_manual.sqlite)

vendor/psy/psysh/bin/build_manual

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+#!/usr/bin/env php
+<?php
+
+/*
+ * This file is part of PsySH
+ *
+ * (c) 2013 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+define('WRAP_WIDTH', 100);
+
+$count = 0;
+
+if (count($argv) !== 3 || !is_dir($argv[1])) {
+    echo "usage: build_manual path/to/manual output_filename.db\n";
+    exit(1);
+}
+
+function htmlwrap($text, $width = null)
+{
+    if ($width === null) {
+        $width = WRAP_WIDTH;
+    }
+
+    $len = strlen($text);
+
+    $return = array();
+    $lastSpace = null;
+    $inTag = false;
+    $i = $tagWidth = 0;
+    do {
+        switch (substr($text, $i, 1)) {
+            case "\n":
+                $return[] = trim(substr($text, 0, $i));
+                $text     = substr($text, $i);
+                $len      = strlen($text);
+
+                $i = $lastSpace = 0;
+                continue;
+
+            case ' ':
+                if (!$inTag) {
+                    $lastSpace = $i;
+                }
+                break;
+
+            case '<':
+                $inTag = true;
+                break;
+
+            case '>':
+                $inTag = false;
+
+            default:
+        }
+
+        if ($inTag) {
+            $tagWidth++;
+        }
+
+        $i++;
+
+        if (!$inTag && ($i - $tagWidth > $width)) {
+            $lastSpace = $lastSpace ?: $width;
+
+            $return[] = trim(substr($text, 0, $lastSpace));
+            $text     = substr($text, $lastSpace);
+            $len      = strlen($text);
+
+            $i = $tagWidth = 0;
+        }
+    } while ($i < $len);
+
+    $return[] = trim($text);
+
+    return implode("\n", $return);
+}
+
+function extract_paragraphs($element)
+{
+    $paragraphs = array();
+    foreach ($element->getElementsByTagName('para') as $p) {
+        $text = '';
+        foreach ($p->childNodes as $child) {
+            // @todo: figure out if there's something we can do with tables.
+            if ($child instanceof DOMElement && $child->tagName === 'table') {
+                continue;
+            }
+
+            // skip references, because ugh.
+            if (preg_match('{^\s*&[a-z][a-z\.]+;\s*$}', $child->textContent)) {
+                continue;
+            }
+
+            $text .= $child->ownerDocument->saveXML($child);
+        }
+
+        if ($text = trim(preg_replace('{\n[ \t]+}', ' ', $text))) {
+            $paragraphs[] = $text;
+        }
+    }
+
+    return implode("\n\n", $paragraphs);
+}
+
+function format_doc($doc)
+{
+    $chunks   = array();
+
+    if (!empty($doc['description'])) {
+        $chunks[] = '<comment>Description:</comment>';
+        $chunks[] = indent_text(htmlwrap(thunk_tags($doc['description']), WRAP_WIDTH - 2));
+        $chunks[] = '';
+    }
+
+    if (!empty($doc['params'])) {
+        $chunks[] = '<comment>Param:</comment>';
+
+        $typeMax = max(array_map(function($param) {
+            return strlen($param['type']);
+        }, $doc['params']));
+
+        $max = max(array_map(function($param) {
+            return strlen($param['name']);
+        }, $doc['params']));
+
+        $template  = '  <info>%-'.$typeMax.'s</info>  <strong>%-'.$max.'s</strong>  %s';
+        $indent    = str_repeat(' ', $typeMax + $max + 6);
+        $wrapWidth = WRAP_WIDTH - strlen($indent);
+
+        foreach ($doc['params'] as $param) {
+            $desc = indent_text(htmlwrap(thunk_tags($param['description']), $wrapWidth), $indent, false);
+            $chunks[] = sprintf($template, $param['type'], $param['name'], $desc);
+        }
+        $chunks[] = '';
+    }
+
+    if (isset($doc['return']) || isset($doc['return_type'])) {
+        $chunks[] = '<comment>Return:</comment>';
+
+        $type   = isset($doc['return_type']) ? $doc['return_type'] : 'unknown';
+        $desc   = isset($doc['return']) ? $doc['return'] : '';
+
+        $indent    = str_repeat(' ', strlen($type) + 4);
+        $wrapWidth = WRAP_WIDTH - strlen($indent);
+
+        if (!empty($desc)) {
+            $desc = indent_text(htmlwrap(thunk_tags($doc['return']), $wrapWidth), $indent, false);
+        }
+
+        $chunks[] = sprintf('  <info>%s</info>  %s', $type, $desc);
+        $chunks[] = '';
+    }
+
+    array_pop($chunks); // get rid of the trailing newline
+
+    return implode("\n", $chunks);
+}
+
+function thunk_tags($text)
+{
+    $tagMap = array(
+        'parameter>' => 'strong>',
+        'function>'  => 'strong>',
+        'literal>'   => 'return>',
+        'type>'      => 'info>',
+        'constant>'  => 'info>',
+    );
+
+    $andBack = array(
+        '&amp;'       => '&',
+        '&amp;true;'  => '<return>true</return>',
+        '&amp;false;' => '<return>false</return>',
+        '&amp;null;'  => '<return>null</return>',
+    );
+
+    return strtr(strip_tags(strtr($text, $tagMap), '<strong><return><info>'), $andBack);
+}
+
+function indent_text($text, $indent = '  ', $leading = true)
+{
+    return ($leading ? $indent : '') . str_replace("\n", "\n".$indent, $text);
+}
+
+function find_type($xml, $paramName)
+{
+    foreach ($xml->getElementsByTagName('methodparam') as $param) {
+        if ($type = $param->getElementsByTagName('type')->item(0)) {
+            if ($parameter = $param->getElementsByTagName('parameter')->item(0)) {
+                if ($paramName == $parameter->textContent) {
+                    return $type->textContent;
+                }
+            }
+        }
+    }
+}
+
+$docs = array();
+foreach (glob($argv[1] . '/*/*/*.xml') as $function) {
+    $funcname = basename($function);
+    if ($funcname == 'main.xml' || strpos($funcname, 'entities.') === 0) {
+        continue;
+    }
+
+    $xmlstr = str_replace('&', '&amp;', file_get_contents($function));
+
+    $xml = new DOMDocument();
+    $xml->preserveWhiteSpace = false;
+
+    if (!@$xml->loadXml($xmlstr)) {
+        echo "XML Parse Error: $function\n";
+        continue;
+    }
+
+    $doc = array();
+    $refsect1s = $xml->getElementsByTagName('refsect1');
+    foreach ($refsect1s as $refsect1) {
+        $role = $refsect1->getAttribute('role');
+        switch ($role) {
+            case 'description':
+                $doc['description'] = extract_paragraphs($refsect1);
+
+                if ($synopsis = $refsect1->getElementsByTagName('methodsynopsis')->item(0)) {
+                    foreach ($synopsis->childNodes as $node) {
+                        if ($node instanceof DOMElement && $node->tagName == 'type') {
+                            $doc['return_type'] = $node->textContent;
+                            break;
+                        }
+                    }
+                }
+                break;
+
+            case 'returnvalues':
+                // do nothing.
+                $doc['return'] = extract_paragraphs($refsect1);
+                break;
+
+            case 'parameters':
+                $params = array();
+                $vars = $refsect1->getElementsByTagName('varlistentry');
+                foreach ($vars as $var) {
+                    if ($name = $var->getElementsByTagName('parameter')->item(0)) {
+                        $params[] = array(
+                            'name'        => '$'.$name->textContent,
+                            'type'        => find_type($xml, $name->textContent),
+                            'description' => extract_paragraphs($var),
+                        );
+                    }
+                }
+
+                $doc['params'] = $params;
+                break;
+        }
+    }
+
+    // and the purpose
+    if ($purpose = $xml->getElementsByTagName('refpurpose')->item(0)) {
+        $desc = htmlwrap($purpose->textContent);
+        if (isset($doc['description'])) {
+            $desc .= "\n\n" . $doc['description'];
+        }
+
+        $doc['description'] = trim($desc);
+    }
+
+    $formatted = format_doc($doc);
+    foreach ($xml->getElementsByTagName('refname') as $ref) {
+        $docs[$ref->textContent] = $formatted;
+    }
+}
+
+if (is_file($argv[2])) {
+    unlink($argv[2]);
+}
+
+$db = new PDO('sqlite:'.$argv[2]);
+
+$db->query('CREATE TABLE php_manual (id char(256) PRIMARY KEY, doc TEXT)');
+$cmd = $db->prepare('INSERT INTO php_manual (id, doc) VALUES (?, ?)');
+foreach ($docs as $id => $doc) {
+    $cmd->execute(array($id, $doc));
+}

vendor/psy/psysh/bin/compile

@@ -0,0 +1,29 @@
+#!/usr/bin/env php
+<?php
+
+/*
+ * This file is part of PsySH
+ *
+ * (c) 2013 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+if (!is_file(dirname(__DIR__).'/vendor/autoload.php')) {
+    throw new RuntimeException('Missing PsySH dev dependencies in ' . dirname(__DIR__).'/vendor/' . ', install with `composer.phar install --dev`.');
+}
+
+require dirname(__DIR__) . '/vendor/autoload.php';
+
+if (!class_exists('Symfony\Component\Finder\Finder')) {
+    throw new RuntimeException('Missing PsySH dev dependencies, install with `composer.phar install --dev`.');
+}
+
+use Psy\Compiler;
+
+error_reporting(-1);
+ini_set('display_errors', 1);
+
+$compiler = new Compiler();
+$compiler->compile();

vendor/psy/psysh/bin/psysh

@@ -0,0 +1,123 @@
+#!/usr/bin/env php
+<?php
+
+/*
+ * This file is part of PsySH
+ *
+ * (c) 2013 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/* <<< */
+if (is_file(__DIR__ . '/../vendor/autoload.php')) {
+    require(__DIR__ . '/../vendor/autoload.php');
+} elseif (is_file(__DIR__ . '/../../../autoload.php')) {
+    require(__DIR__ . '/../../../autoload.php');
+} else {
+    die(
+        'You must set up the Psy Shell dependencies, run the following commands:' . PHP_EOL .
+        'curl -s http://getcomposer.org/installer | php' . PHP_EOL .
+        'php composer.phar install' . PHP_EOL
+    );
+}
+/* >>> */
+
+use Psy\Configuration;
+use Psy\Shell;
+use Symfony\Component\Console\Input\ArgvInput;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputDefinition;
+use Symfony\Component\Console\Input\InputOption;
+
+// If the psysh binary was included directly, assume they just wanted an
+// autoloader and bail early.
+if (version_compare(PHP_VERSION, '5.3.6', '<')) {
+    $trace = debug_backtrace();
+} elseif (version_compare(PHP_VERSION, '5.4.0', '<')) {
+    $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+} else {
+    $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1);
+}
+
+if (Shell::isIncluded($trace)) {
+    unset($trace);
+
+    return;
+}
+
+// Clean up after ourselves.
+unset($trace);
+
+call_user_func(function() {
+    $usageException = null;
+
+    $input = new ArgvInput();
+    try {
+        $input->bind(new InputDefinition(array(
+            new InputOption('help',    'h', InputOption::VALUE_NONE),
+            new InputOption('config',  'c', InputOption::VALUE_REQUIRED),
+            new InputOption('version', 'v', InputOption::VALUE_NONE),
+
+            new InputArgument('include', InputArgument::IS_ARRAY),
+        )));
+    } catch (\RuntimeException $e) {
+        $usageException = $e;
+    }
+
+    $config = array();
+
+    // Handle --config
+    if ($configFile = $input->getOption('config')) {
+        $config['configFile'] = $configFile;
+    }
+
+    $shell = new Shell(new Configuration($config));
+
+    // Handle --help
+    if ($usageException !== null || $input->getOption('help')) {
+        if ($usageException !== null) {
+            echo $usageException->getMessage() . PHP_EOL . PHP_EOL;
+        }
+
+        $version = $shell->getVersion();
+        $name    = basename(reset($_SERVER['argv']));
+        echo <<<EOL
+$version
+
+Usage:
+  $name [--version] [--help] [files...]
+
+Options:
+  --help     -h Display this help message.
+  --config   -c Use an alternate PsySH config file location.
+  --version  -v Display the PsySH version.
+
+EOL;
+        exit($usageException === null ? 0 : 1);
+    }
+
+
+    // Handle --version
+    if ($input->getOption('version')) {
+        echo $shell->getVersion() . PHP_EOL;
+        exit(0);
+    }
+
+    // Pass additional arguments to Shell as 'includes'
+    $shell->setIncludes($input->getArgument('include'));
+
+    try {
+        // And go!
+        $shell->run();
+    } catch (Exception $e) {
+        echo $e->getMessage() . PHP_EOL;
+
+        // TODO: this triggers the "exited unexpectedly" logic in the
+        // ForkingLoop, so we can't exit(1) after starting the shell...
+        // fix this :)
+
+        // exit(1);
+    }
+});

vendor/psy/psysh/composer.json

@@ -0,0 +1,46 @@
+{
+    "name": "psy/psysh",
+    "description": "An interactive shell for modern PHP.",
+    "type": "library",
+    "keywords": ["console", "interactive", "shell", "repl"],
+    "homepage": "http://psysh.org",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Justin Hileman",
+            "email": "justin@justinhileman.info",
+            "homepage": "http://justinhileman.com"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.0",
+        "symfony/console": "~2.3.10|~2.4.2|~2.5",
+        "nikic/php-parser": "~1.0",
+        "dnoegel/php-xdg-base-dir": "0.1",
+        "jakub-onderka/php-console-highlighter": "0.3.*"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "~3.7|~4.0",
+        "symfony/finder": "~2.1|~3.0",
+        "squizlabs/php_codesniffer": "~2.0",
+        "fabpot/php-cs-fixer": "~1.5"
+    },
+    "suggest": {
+        "ext-pcntl": "Enabling the PCNTL extension makes PsySH a lot happier :)",
+        "ext-posix": "If you have PCNTL, you'll want the POSIX extension as well.",
+        "ext-readline": "Enables support for arrow-key history navigation, and showing and manipulating command history.",
+        "ext-pdo-sqlite": "The doc command requires SQLite to work."
+    },
+    "autoload": {
+        "files": ["src/Psy/functions.php"],
+        "psr-0": {
+            "Psy\\": "src/"
+        }
+    },
+    "bin": ["bin/psysh"],
+    "extra": {
+        "branch-alias": {
+            "dev-develop": "0.4.x-dev"
+        }
+    }
+}

vendor/psy/psysh/phpcs.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0"?>
+<ruleset name="PsySH Coding Standard">
+  <description>The coding standard for PsySH</description>
+
+  <exclude-pattern>*/bin/*</exclude-pattern>
+  <exclude-pattern>*/vendor/*</exclude-pattern>
+
+  <rule ref="PSR2">
+    <exclude name="Generic.Functions.FunctionCallArgumentSpacing.TooMuchSpaceAfterComma"/>
+  </rule>
+</ruleset>

vendor/psy/psysh/phpunit.xml.dist

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit backupGlobals="false" colors="true" bootstrap="./test/bootstrap.php">
+	<testsuite name="PsySH">
+		<directory suffix="Test.php">./test</directory>
+	</testsuite>
+
+	<filter>
+		<whitelist>
+			<directory suffix=".php">./src/Psy</directory>
+		</whitelist>
+	</filter>
+</phpunit>

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

@@ -0,0 +1,45 @@
+<?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;
+
+/**
+ * Psy class autoloader.
+ */
+class Autoloader
+{
+    /**
+     * Register autoload() as an SPL autoloader.
+     *
+     * @see self::autoload
+     */
+    public static function register()
+    {
+        spl_autoload_register(array(__CLASS__, 'autoload'));
+    }
+
+    /**
+     * Autoload Psy classes.
+     *
+     * @param string $class
+     */
+    public static function autoload($class)
+    {
+        if (0 !== strpos($class, 'Psy')) {
+            return;
+        }
+
+        $file = dirname(__DIR__) . '/' . strtr($class, '\\', '/') . '.php';
+        if (is_file($file)) {
+            require $file;
+        }
+    }
+}

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

@@ -0,0 +1,175 @@
+<?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;
+
+use PhpParser\Lexer;
+use PhpParser\NodeTraverser;
+use PhpParser\Parser;
+use PhpParser\PrettyPrinter\Standard as Printer;
+use Psy\CodeCleaner\AbstractClassPass;
+use Psy\CodeCleaner\AssignThisVariablePass;
+use Psy\CodeCleaner\CalledClassPass;
+use Psy\CodeCleaner\CallTimePassByReferencePass;
+use Psy\CodeCleaner\FunctionReturnInWriteContextPass;
+use Psy\CodeCleaner\ImplicitReturnPass;
+use Psy\CodeCleaner\InstanceOfPass;
+use Psy\CodeCleaner\LeavePsyshAlonePass;
+use Psy\CodeCleaner\LegacyEmptyPass;
+use Psy\CodeCleaner\MagicConstantsPass;
+use Psy\CodeCleaner\NamespacePass;
+use Psy\CodeCleaner\StaticConstructorPass;
+use Psy\CodeCleaner\UseStatementPass;
+use Psy\CodeCleaner\ValidClassNamePass;
+use Psy\CodeCleaner\ValidConstantPass;
+use Psy\CodeCleaner\ValidFunctionNamePass;
+use Psy\Exception\ParseErrorException;
+
+/**
+ * A service to clean up user input, detect parse errors before they happen,
+ * and generally work around issues with the PHP code evaluation experience.
+ */
+class CodeCleaner
+{
+    private $parser;
+    private $printer;
+    private $traverser;
+    private $namespace;
+
+    /**
+     * CodeCleaner constructor.
+     *
+     * @param Parser        $parser    A PhpParser Parser instance. One will be created if not explicitly supplied.
+     * @param Printer       $printer   A PhpParser Printer instance. One will be created if not explicitly supplied.
+     * @param NodeTraverser $traverser A PhpParser NodeTraverser instance. One will be created if not explicitly supplied.
+     */
+    public function __construct(Parser $parser = null, Printer $printer = null, NodeTraverser $traverser = null)
+    {
+        $this->parser    = $parser    ?: new Parser(new Lexer());
+        $this->printer   = $printer   ?: new Printer();
+        $this->traverser = $traverser ?: new NodeTraverser();
+
+        foreach ($this->getDefaultPasses() as $pass) {
+            $this->traverser->addVisitor($pass);
+        }
+    }
+
+    /**
+     * Get default CodeCleaner passes.
+     *
+     * @return array
+     */
+    private function getDefaultPasses()
+    {
+        return array(
+            new AbstractClassPass(),
+            new AssignThisVariablePass(),
+            new FunctionReturnInWriteContextPass(),
+            new CallTimePassByReferencePass(),
+            new CalledClassPass(),
+            new InstanceOfPass(),
+            new LeavePsyshAlonePass(),
+            new LegacyEmptyPass(),
+            new ImplicitReturnPass(),
+            new UseStatementPass(),      // must run before namespace and validation passes
+            new NamespacePass($this),    // must run after the implicit return pass
+            new StaticConstructorPass(),
+            new ValidFunctionNamePass(),
+            new ValidClassNamePass(),
+            new ValidConstantPass(),
+            new MagicConstantsPass(),
+        );
+    }
+
+    /**
+     * Clean the given array of code.
+     *
+     * @throws ParseErrorException if the code is invalid PHP, and cannot be coerced into valid PHP.
+     *
+     * @param array $codeLines
+     * @param bool  $requireSemicolons
+     *
+     * @return string|false Cleaned PHP code, False if the input is incomplete.
+     */
+    public function clean(array $codeLines, $requireSemicolons = false)
+    {
+        $stmts = $this->parse("<?php " . implode(PHP_EOL, $codeLines) . PHP_EOL, $requireSemicolons);
+        if ($stmts === false) {
+            return false;
+        }
+
+        // Catch fatal errors before they happen
+        $stmts = $this->traverser->traverse($stmts);
+
+        return $this->printer->prettyPrint($stmts);
+    }
+
+    /**
+     * Set the current local namespace.
+     *
+     * @param null|array $namespace (default: null)
+     *
+     * @return null|array
+     */
+    public function setNamespace(array $namespace = null)
+    {
+        $this->namespace = $namespace;
+    }
+
+    /**
+     * Get the current local namespace.
+     *
+     * @return null|array
+     */
+    public function getNamespace()
+    {
+        return $this->namespace;
+    }
+
+    /**
+     * Lex and parse a block of code.
+     *
+     * @see Parser::parse
+     *
+     * @param string $code
+     * @param bool   $requireSemicolons
+     *
+     * @return array A set of statements
+     */
+    protected function parse($code, $requireSemicolons = false)
+    {
+        try {
+            return $this->parser->parse($code);
+        } catch (\PhpParser\Error $e) {
+            if (!$this->parseErrorIsEOF($e)) {
+                throw ParseErrorException::fromParseError($e);
+            }
+
+            if ($requireSemicolons) {
+                return false;
+            }
+
+            try {
+                // Unexpected EOF, try again with an implicit semicolon
+                return $this->parser->parse($code . ';');
+            } catch (\PhpParser\Error $e) {
+                return false;
+            }
+        }
+    }
+
+    private function parseErrorIsEOF(\PhpParser\Error $e)
+    {
+        $msg = $e->getRawMessage();
+
+        return ($msg === "Unexpected token EOF") || (strpos($msg, "Syntax error, unexpected EOF") !== false);
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/AbstractClassPass.php

@@ -0,0 +1,69 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Class_ as ClassStmt;
+use PhpParser\Node\Stmt\ClassMethod;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * The abstract class pass handles abstract classes and methods, complaining if there are too few or too many of either.
+ */
+class AbstractClassPass extends CodeCleanerPass
+{
+    private $class;
+    private $abstractMethods;
+
+    /**
+     * @throws RuntimeException if the node is an abstract function with a body.
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof ClassStmt) {
+            $this->class = $node;
+            $this->abstractMethods = array();
+        } elseif ($node instanceof ClassMethod) {
+            if ($node->isAbstract()) {
+                $name = sprintf('%s::%s', $this->class->name, $node->name);
+                $this->abstractMethods[] = $name;
+
+                if ($node->stmts !== null) {
+                    throw new FatalErrorException(sprintf('Abstract function %s cannot contain body', $name));
+                }
+            }
+        }
+    }
+
+    /**
+     * @throws RuntimeException if the node is a non-abstract class with abstract methods.
+     *
+     * @param Node $node
+     */
+    public function leaveNode(Node $node)
+    {
+        if ($node instanceof ClassStmt) {
+            $count = count($this->abstractMethods);
+            if ($count > 0 && !$node->isAbstract()) {
+                throw new FatalErrorException(sprintf(
+                    'Class %s contains %d abstract method%s must therefore be declared abstract or implement the remaining methods (%s)',
+                    $node->name,
+                    $count,
+                    ($count === 0) ? '' : 's',
+                    implode(', ', $this->abstractMethods)
+                ));
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/AssignThisVariablePass.php

@@ -0,0 +1,39 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node as Node;
+use PhpParser\Node\Expr\Assign;
+use PhpParser\Node\Expr\Variable;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that the user input does not assign the `$this` variable.
+ *
+ * @author Martin Hasoň <martin.hason@gmail.com>
+ */
+class AssignThisVariablePass extends CodeCleanerPass
+{
+    /**
+     * Validate that the user input does not assign the `$this` variable.
+     *
+     * @throws RuntimeException if the user assign the `$this` variable.
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof Assign && $node->var instanceof Variable && $node->var->name === 'this') {
+            throw new FatalErrorException('Cannot re-assign $this');
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/CallTimePassByReferencePass.php

@@ -0,0 +1,52 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall as FunctionCall;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\StaticCall;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that the user did not use the call-time pass-by-reference that causes a fatal error.
+ *
+ * As of PHP 5.4.0, call-time pass-by-reference was removed, so using it will raise a fatal error.
+ *
+ * @author Martin Hasoň <martin.hason@gmail.com>
+ */
+class CallTimePassByReferencePass extends CodeCleanerPass
+{
+    /**
+     * Validate of use call-time pass-by-reference.
+     *
+     * @throws RuntimeException if the user used call-time pass-by-reference in PHP >= 5.4.0
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if (version_compare(PHP_VERSION, '5.4', '<')) {
+            return;
+        }
+
+        if (!$node instanceof FunctionCall && !$node instanceof MethodCall && !$node instanceof StaticCall) {
+            return;
+        }
+
+        foreach ($node->args as $arg) {
+            if ($arg->byRef) {
+                throw new FatalErrorException('Call-time pass-by-reference has been removed');
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/CalledClassPass.php

@@ -0,0 +1,83 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\Class_ as ClassStmt;
+use PhpParser\Node\Stmt\Trait_ as TraitStmt;
+use Psy\Exception\ErrorException;
+
+/**
+ * The called class pass throws warnings for get_class() and get_called_class()
+ * outside a class context.
+ */
+class CalledClassPass extends CodeCleanerPass
+{
+    private $inClass;
+
+    /**
+     * @param array $nodes
+     */
+    public function beforeTraverse(array $nodes)
+    {
+        $this->inClass = false;
+    }
+
+    /**
+     * @throws ErrorException if get_class or get_called_class is called without an object from outside a class
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof ClassStmt || $node instanceof TraitStmt) {
+            $this->inClass = true;
+        } elseif ($node instanceof FuncCall && !$this->inClass) {
+            // We'll give any args at all (besides null) a pass.
+            // Technically we should be checking whether the args are objects, but this will do for now.
+            //
+            // TODO: switch this to actually validate args when we get context-aware code cleaner passes.
+            if (!empty($node->args) && !$this->isNull($node->args[0])) {
+                return;
+            }
+
+            // We'll ignore name expressions as well (things like `$foo()`)
+            if (!($node->name instanceof Name)) {
+                return;
+            }
+
+            $name = strtolower($node->name);
+            if (in_array($name, array('get_class', 'get_called_class'))) {
+                $msg = sprintf('%s() called without object from outside a class', $name);
+                throw new ErrorException($msg, 0, E_USER_WARNING, null, $node->getLine());
+            }
+        }
+    }
+
+    /**
+     * @param Node $node
+     */
+    public function leaveNode(Node $node)
+    {
+        if ($node instanceof ClassStmt) {
+            $this->inClass = false;
+        }
+    }
+
+    private function isNull(Node $node)
+    {
+        return $node->value instanceof ConstFetch && strtolower($node->value->name) === 'null';
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/CodeCleanerPass.php

@@ -0,0 +1,22 @@
+<?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\CodeCleaner;
+
+use PhpParser\NodeVisitorAbstract;
+
+/**
+ * A CodeCleaner pass is a PhpParser Node Visitor.
+ */
+abstract class CodeCleanerPass extends NodeVisitorAbstract
+{
+    // Wheee!
+}

vendor/psy/psysh/src/Psy/CodeCleaner/FunctionReturnInWriteContextPass.php

@@ -0,0 +1,82 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Array_ as ArrayNode;
+use PhpParser\Node\Expr\Assign as AssignNode;
+use PhpParser\Node\Expr\Empty_ as EmptyNode;
+use PhpParser\Node\Expr\FuncCall as FunctionCall;
+use PhpParser\Node\Expr\Isset_ as IssetNode;
+use PhpParser\Node\Expr\MethodCall;
+use PhpParser\Node\Expr\StaticCall;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that the functions are used correctly.
+ *
+ * @author Martin Hasoň <martin.hason@gmail.com>
+ */
+class FunctionReturnInWriteContextPass extends CodeCleanerPass
+{
+    const EXCEPTION_MESSAGE = "Can't use function return value in write context";
+
+    private $isPhp55;
+
+    public function __construct()
+    {
+        $this->isPhp55 = version_compare(PHP_VERSION, '5.5', '>=');
+    }
+
+    /**
+     * Validate that the functions are used correctly.
+     *
+     * @throws FatalErrorException if a function is passed as an argument reference
+     * @throws FatalErrorException if a function is used as an argument in the isset
+     * @throws FatalErrorException if a function is used as an argument in the empty, only for PHP < 5.5
+     * @throws FatalErrorException if a value is assigned to a function
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof ArrayNode || $this->isCallNode($node)) {
+            $items = $node instanceof ArrayNode ? $node->items : $node->args;
+            foreach ($items as $item) {
+                if ($item->byRef && $this->isCallNode($item->value)) {
+                    throw new FatalErrorException(self::EXCEPTION_MESSAGE);
+                }
+            }
+        } elseif ($node instanceof IssetNode) {
+            foreach ($node->vars as $var) {
+                if (!$this->isCallNode($var)) {
+                    continue;
+                }
+
+                if ($this->isPhp55) {
+                    throw new FatalErrorException('Cannot use isset() on the result of a function call (you can use "null !== func()" instead)');
+                } else {
+                    throw new FatalErrorException(self::EXCEPTION_MESSAGE);
+                }
+            }
+        } elseif ($node instanceof EmptyNode && !$this->isPhp55 && $this->isCallNode($node->expr)) {
+            throw new FatalErrorException(self::EXCEPTION_MESSAGE);
+        } elseif ($node instanceof AssignNode && $this->isCallNode($node->var)) {
+            throw new FatalErrorException(self::EXCEPTION_MESSAGE);
+        }
+    }
+
+    private function isCallNode(Node $node)
+    {
+        return $node instanceof FunctionCall || $node instanceof MethodCall || $node instanceof StaticCall;
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/ImplicitReturnPass.php

@@ -0,0 +1,38 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node\Expr;
+use PhpParser\Node\Stmt\Return_ as ReturnStmt;
+
+/**
+ * Add an implicit "return" to the last statement, provided it can be returned.
+ */
+class ImplicitReturnPass extends CodeCleanerPass
+{
+    /**
+     * @param array $nodes
+     */
+    public function beforeTraverse(array $nodes)
+    {
+        $last = end($nodes);
+
+        if ($last instanceof Expr) {
+            $nodes[count($nodes) - 1] = new ReturnStmt($last, array(
+                'startLine' => $last->getLine(),
+                'endLine'   => $last->getLine(),
+            ));
+        }
+
+        return $nodes;
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/InstanceOfPass.php

@@ -0,0 +1,45 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\ConstFetch;
+use PhpParser\Node\Expr\Instanceof_ as InstanceofStmt;
+use PhpParser\Node\Scalar;
+use PhpParser\Node\Scalar\Encapsed;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that the instanceof statement does not receive a scalar value or a non-class constant.
+ *
+ * @author Martin Hasoň <martin.hason@gmail.com>
+ */
+class InstanceOfPass extends CodeCleanerPass
+{
+    /**
+     * Validate that the instanceof statement does not receive a scalar value or a non-class constant.
+     *
+     * @throws FatalErrorException if a scalar or a non-class constant is given
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if (!$node instanceof InstanceofStmt) {
+            return;
+        }
+
+        if (($node->expr instanceof Scalar && !$node->expr instanceof Encapsed) || $node->expr instanceof ConstFetch) {
+            throw new FatalErrorException('instanceof expects an object instance, constant given');
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/LeavePsyshAlonePass.php

@@ -0,0 +1,36 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Variable;
+use Psy\Exception\RuntimeException;
+
+/**
+ * Validate that the user input does not reference the `$__psysh__` variable.
+ */
+class LeavePsyshAlonePass extends CodeCleanerPass
+{
+    /**
+     * Validate that the user input does not reference the `$__psysh__` variable.
+     *
+     * @throws RuntimeException if the user is messing with $__psysh__.
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof Variable && $node->name === "__psysh__") {
+            throw new RuntimeException('Don\'t mess with $__psysh__. Bad things will happen.');
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/LegacyEmptyPass.php

@@ -0,0 +1,64 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\Empty_ as ExprEmpty;
+use PhpParser\Node\Expr\Variable;
+use Psy\Exception\ParseErrorException;
+
+/**
+ * Validate that the user did not call the language construct `empty()` on a
+ * statement in PHP < 5.5.
+ */
+class LegacyEmptyPass extends CodeCleanerPass
+{
+    /**
+     * Validate use of empty in PHP < 5.5.
+     *
+     * @throws ParseErrorException if the user used empty with anything but a variable.
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if (version_compare(PHP_VERSION, '5.5', '>=')) {
+            return;
+        }
+
+        if (!$node instanceof ExprEmpty) {
+            return;
+        }
+
+        if (!$node->expr instanceof Variable) {
+            $msg = sprintf('syntax error, unexpected %s', $this->getUnexpectedThing($node->expr));
+
+            throw new ParseErrorException($msg, $node->expr->getLine());
+        }
+    }
+
+    private function getUnexpectedThing(Node $node)
+    {
+        switch ($node->getType()) {
+            case 'Scalar_String':
+            case 'Scalar_LNumber':
+            case 'Scalar_DNumber':
+                return json_encode($node->value);
+
+            case 'Expr_ConstFetch':
+                return (string) $node->name;
+
+            default:
+                return $node->getType();
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/MagicConstantsPass.php

@@ -0,0 +1,42 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+use PhpParser\Node\Scalar\MagicConst\Dir;
+use PhpParser\Node\Scalar\MagicConst\File;
+use PhpParser\Node\Scalar\String as String;
+
+/**
+ * Swap out __DIR__ and __FILE__ magic constants with our best guess?
+ */
+class MagicConstantsPass extends CodeCleanerPass
+{
+    /**
+     * Swap out __DIR__ and __FILE__ constants, because the default ones when
+     * calling eval() don't make sense.
+     *
+     * @param Node $node
+     *
+     * @return null|FuncCall|StringNode
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof Dir) {
+            return new FuncCall(new Name('getcwd'), array(), $node->getAttributes());
+        } elseif ($node instanceof File) {
+            return new String('', $node->getAttributes());
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/NamespaceAwarePass.php

@@ -0,0 +1,71 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PhpParser\Node\Name\FullyQualified as FullyQualifiedName;
+use PhpParser\Node\Stmt\Namespace_ as NamespaceStmt;
+
+/**
+ * Abstract namespace-aware code cleaner pass.
+ */
+abstract class NamespaceAwarePass extends CodeCleanerPass
+{
+    protected $namespace;
+    protected $currentScope;
+
+    /**
+     * TODO: should this be final? Extending classes should be sure to either
+     * use afterTraverse or call parent::beforeTraverse() when overloading.
+     *
+     * Reset the namespace and the current scope before beginning analysis.
+     */
+    public function beforeTraverse(array $nodes)
+    {
+        $this->namespace    = array();
+        $this->currentScope = array();
+    }
+
+    /**
+     * TODO: should this be final? Extending classes should be sure to either use
+     * leaveNode or call parent::enterNode() when overloading.
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof NamespaceStmt) {
+            $this->namespace = isset($node->name) ? $node->name->parts : array();
+        }
+    }
+
+    /**
+     * Get a fully-qualified name (class, function, interface, etc).
+     *
+     * @param mixed $name
+     *
+     * @return string
+     */
+    protected function getFullyQualifiedName($name)
+    {
+        if ($name instanceof FullyQualifiedName) {
+            return implode('\\', $name->parts);
+        } elseif ($name instanceof Name) {
+            $name = $name->parts;
+        } elseif (!is_array($name)) {
+            $name = array($name);
+        }
+
+        return implode('\\', array_merge($this->namespace, $name));
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/NamespacePass.php

@@ -0,0 +1,79 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node\Name;
+use PhpParser\Node\Stmt\Namespace_ as NamespaceStmt;
+use Psy\CodeCleaner;
+
+/**
+ * Provide implicit namespaces for subsequent execution.
+ *
+ * The namespace pass remembers the last standalone namespace line encountered:
+ *
+ *     namespace Foo\Bar;
+ *
+ * ... which it then applies implicitly to all future evaluated code, until the
+ * namespace is replaced by another namespace. To reset to the top level
+ * namespace, enter `namespace {}`. This is a bit ugly, but it does the trick :)
+ */
+class NamespacePass extends CodeCleanerPass
+{
+    private $namespace = null;
+    private $cleaner;
+
+    /**
+     * @param CodeCleaner $cleaner
+     */
+    public function __construct(CodeCleaner $cleaner)
+    {
+        $this->cleaner = $cleaner;
+    }
+
+    /**
+     * If this is a standalone namespace line, remember it for later.
+     *
+     * Otherwise, apply remembered namespaces to the code until a new namespace
+     * is encountered.
+     *
+     * @param array $nodes
+     */
+    public function beforeTraverse(array $nodes)
+    {
+        $first = reset($nodes);
+        if (count($nodes) === 1 && $first instanceof NamespaceStmt && empty($first->stmts)) {
+            $this->setNamespace($first->name);
+        } else {
+            foreach ($nodes as $key => $node) {
+                if ($node instanceof NamespaceStmt) {
+                    $this->setNamespace(null);
+                } elseif ($this->namespace !== null) {
+                    $nodes[$key] = new NamespaceStmt($this->namespace, array($node));
+                }
+            }
+        }
+
+        return $nodes;
+    }
+
+    /**
+     * Remember the namespace and (re)set the namespace on the CodeCleaner as
+     * well.
+     *
+     * @param null|Name $namespace
+     */
+    private function setNamespace($namespace)
+    {
+        $this->namespace = $namespace;
+        $this->cleaner->setNamespace($namespace === null ? null : $namespace->parts);
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/StaticConstructorPass.php

@@ -0,0 +1,87 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Class_ as ClassStmt;
+use PhpParser\Node\Stmt\ClassMethod;
+use PhpParser\Node\Stmt\Namespace_ as NamespaceStmt;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that the old-style constructor function is not static.
+ *
+ * As of PHP 5.3.3, methods with the same name as the last element of a namespaced class name
+ * will no longer be treated as constructor. This change doesn't affect non-namespaced classes.
+ *
+ * Validation of the __construct method ensures the PHP Parser.
+ *
+ * @author Martin Hasoň <martin.hason@gmail.com>
+ */
+class StaticConstructorPass extends CodeCleanerPass
+{
+    private $isPHP533;
+    private $namespace;
+
+    public function __construct()
+    {
+        $this->isPHP533 = version_compare(PHP_VERSION, '5.3.3', '>=');
+    }
+
+    public function beforeTraverse(array $nodes)
+    {
+        $this->namespace = array();
+    }
+
+    /**
+     * Validate that the old-style constructor function is not static.
+     *
+     * @throws FatalErrorException if the old-style constructor function is static.
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof NamespaceStmt) {
+            $this->namespace = isset($node->name) ? $node->name->parts : array();
+        } elseif ($node instanceof ClassStmt) {
+            // Bail early if this is PHP 5.3.3 and we have a namespaced class
+            if (!empty($this->namespace) && $this->isPHP533) {
+                return;
+            }
+
+            $constructor = null;
+            foreach ($node->stmts as $stmt) {
+                if ($stmt instanceof ClassMethod) {
+                    // Bail early if we find a new-style constructor
+                    if ('__construct' === strtolower($stmt->name)) {
+                        return;
+                    }
+
+                    // We found a possible old-style constructor
+                    // (unless there is also a __construct method)
+                    if (strtolower($node->name) === strtolower($stmt->name)) {
+                        $constructor = $stmt;
+                    }
+                }
+            }
+
+            if ($constructor && $constructor->isStatic()) {
+                throw new FatalErrorException(sprintf(
+                    'Constructor %s::%s() cannot be static',
+                    implode('\\', array_merge($this->namespace, (array) $node->name)),
+                    $constructor->name
+                ));
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/UseStatementPass.php

@@ -0,0 +1,111 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Name;
+use PhpParser\Node\Name\FullyQualified as FullyQualifiedName;
+use PhpParser\Node\Stmt\Namespace_ as NamespaceStmt;
+use PhpParser\Node\Stmt\Use_ as UseStmt;
+
+/**
+ * Provide implicit use statements for subsequent execution.
+ *
+ * The use statement pass remembers the last use statement line encountered:
+ *
+ *     use Foo\Bar as Baz;
+ *
+ * ... which it then applies implicitly to all future evaluated code, until the
+ * current namespace is replaced by another namespace.
+ */
+class UseStatementPass extends NamespaceAwarePass
+{
+    private $aliases       = array();
+    private $lastAliases   = array();
+    private $lastNamespace = null;
+
+    /**
+     * Re-load the last set of use statements on re-entering a namespace.
+     *
+     * This isn't how namespaces normally work, but because PsySH has to spin
+     * up a new namespace for every line of code, we do this to make things
+     * work like you'd expect.
+     *
+     * @param Node $node
+     */
+    public function enterNode(Node $node)
+    {
+        if ($node instanceof NamespaceStmt) {
+            // If this is the same namespace as last namespace, let's do ourselves
+            // a favor and reload all the aliases...
+            if (strtolower($node->name) === strtolower($this->lastNamespace)) {
+                $this->aliases = $this->lastAliases;
+            }
+        }
+    }
+
+    /**
+     * If this statement is a namespace, forget all the aliases we had.
+     *
+     * If it's a use statement, remember the alias for later. Otherwise, apply
+     * remembered aliases to the code.
+     *
+     * @param Node $node
+     */
+    public function leaveNode(Node $node)
+    {
+        if ($node instanceof UseStmt) {
+            // Store a reference to every "use" statement, because we'll need
+            // them in a bit.
+            foreach ($node->uses as $use) {
+                $this->aliases[strtolower($use->alias)] = $use->name;
+            }
+
+            return false;
+        } elseif ($node instanceof NamespaceStmt) {
+            // Start fresh, since we're done with this namespace.
+            $this->lastNamespace = $node->name;
+            $this->lastAliases   = $this->aliases;
+            $this->aliases       = array();
+        } else {
+            foreach ($node as $name => $subNode) {
+                if ($subNode instanceof Name) {
+                    // Implicitly thunk all aliases.
+                    if ($replacement = $this->findAlias($subNode)) {
+                        $node->$name = $replacement;
+                    }
+                }
+            }
+
+            return $node;
+        }
+    }
+
+    /**
+     * Find class/namespace aliases.
+     *
+     * @param Name $name
+     *
+     * @return FullyQualifiedName|null
+     */
+    private function findAlias(Name $name)
+    {
+        $that = strtolower($name);
+        foreach ($this->aliases as $alias => $prefix) {
+            if ($that === $alias) {
+                return new FullyQualifiedName($prefix->toString());
+            } elseif (substr($that, 0, strlen($alias) + 1) === $alias . '\\') {
+                return new FullyQualifiedName($prefix->toString() . substr($name, strlen($alias)));
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/ValidClassNamePass.php

@@ -0,0 +1,314 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\ClassConstFetch;
+use PhpParser\Node\Expr\New_ as NewExpr;
+use PhpParser\Node\Expr\StaticCall;
+use PhpParser\Node\Stmt;
+use PhpParser\Node\Stmt\Class_ as ClassStmt;
+use PhpParser\Node\Stmt\Interface_ as InterfaceStmt;
+use PhpParser\Node\Stmt\Trait_ as TraitStmt;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that classes exist.
+ *
+ * This pass throws a FatalErrorException rather than letting PHP run
+ * headfirst into a real fatal error and die.
+ */
+class ValidClassNamePass extends NamespaceAwarePass
+{
+    const CLASS_TYPE     = 'class';
+    const INTERFACE_TYPE = 'interface';
+    const TRAIT_TYPE     = 'trait';
+
+    protected $checkTraits;
+
+    public function __construct()
+    {
+        $this->checkTraits = function_exists('trait_exists');
+    }
+
+    /**
+     * Validate class, interface and trait statements, and `new` expressions.
+     *
+     * @throws FatalErrorException if a class, interface or trait is referenced which does not exist.
+     * @throws FatalErrorException if a class extends something that is not a class.
+     * @throws FatalErrorException if a class implements something that is not an interface.
+     * @throws FatalErrorException if an interface extends something that is not an interface.
+     * @throws FatalErrorException if a class, interface or trait redefines an existing class, interface or trait name.
+     *
+     * @param Node $node
+     */
+    public function leaveNode(Node $node)
+    {
+        if ($node instanceof ClassStmt) {
+            $this->validateClassStatement($node);
+        } elseif ($node instanceof InterfaceStmt) {
+            $this->validateInterfaceStatement($node);
+        } elseif ($node instanceof TraitStmt) {
+            $this->validateTraitStatement($node);
+        } elseif ($node instanceof NewExpr) {
+            $this->validateNewExpression($node);
+        } elseif ($node instanceof ClassConstFetch) {
+            $this->validateClassConstFetchExpression($node);
+        } elseif ($node instanceof StaticCall) {
+            $this->validateStaticCallExpression($node);
+        }
+    }
+
+    /**
+     * Validate a class definition statement.
+     *
+     * @param ClassStmt $stmt
+     */
+    protected function validateClassStatement(ClassStmt $stmt)
+    {
+        $this->ensureCanDefine($stmt);
+        if (isset($stmt->extends)) {
+            $this->ensureClassExists($this->getFullyQualifiedName($stmt->extends), $stmt);
+        }
+        $this->ensureInterfacesExist($stmt->implements, $stmt);
+    }
+
+    /**
+     * Validate an interface definition statement.
+     *
+     * @param InterfaceStmt $stmt
+     */
+    protected function validateInterfaceStatement(InterfaceStmt $stmt)
+    {
+        $this->ensureCanDefine($stmt);
+        $this->ensureInterfacesExist($stmt->extends, $stmt);
+    }
+
+    /**
+     * Validate a trait definition statement.
+     *
+     * @param TraitStmt $stmt
+     */
+    protected function validateTraitStatement(TraitStmt $stmt)
+    {
+        $this->ensureCanDefine($stmt);
+    }
+
+    /**
+     * Validate a `new` expression.
+     *
+     * @param NewExpr $stmt
+     */
+    protected function validateNewExpression(NewExpr $stmt)
+    {
+        // if class name is an expression, give it a pass for now
+        if (!$stmt->class instanceof Expr) {
+            $this->ensureClassExists($this->getFullyQualifiedName($stmt->class), $stmt);
+        }
+    }
+
+    /**
+     * Validate a class constant fetch expression's class.
+     *
+     * @param ClassConstFetch $stmt
+     */
+    protected function validateClassConstFetchExpression(ClassConstFetch $stmt)
+    {
+        // if class name is an expression, give it a pass for now
+        if (!$stmt->class instanceof Expr) {
+            $this->ensureClassExists($this->getFullyQualifiedName($stmt->class), $stmt);
+        }
+    }
+
+    /**
+     * Validate a class constant fetch expression's class.
+     *
+     * @param StaticCall $stmt
+     */
+    protected function validateStaticCallExpression(StaticCall $stmt)
+    {
+        // if class name is an expression, give it a pass for now
+        if (!$stmt->class instanceof Expr) {
+            $this->ensureMethodExists($this->getFullyQualifiedName($stmt->class), $stmt->name, $stmt);
+        }
+    }
+
+    /**
+     * Ensure that no class, interface or trait name collides with a new definition.
+     *
+     * @throws FatalErrorException
+     *
+     * @param Stmt $stmt
+     */
+    protected function ensureCanDefine(Stmt $stmt)
+    {
+        $name = $this->getFullyQualifiedName($stmt->name);
+
+        // check for name collisions
+        $errorType = null;
+        if ($this->classExists($name)) {
+            $errorType = self::CLASS_TYPE;
+        } elseif ($this->interfaceExists($name)) {
+            $errorType = self::INTERFACE_TYPE;
+        } elseif ($this->traitExists($name)) {
+            $errorType = self::TRAIT_TYPE;
+        }
+
+        if ($errorType !== null) {
+            throw $this->createError(sprintf('%s named %s already exists', ucfirst($errorType), $name), $stmt);
+        }
+
+        // Store creation for the rest of this code snippet so we can find local
+        // issue too
+        $this->currentScope[strtolower($name)] = $this->getScopeType($stmt);
+    }
+
+    /**
+     * Ensure that a referenced class exists.
+     *
+     * @throws FatalErrorException
+     *
+     * @param string $name
+     * @param Stmt   $stmt
+     */
+    protected function ensureClassExists($name, $stmt)
+    {
+        if (!$this->classExists($name)) {
+            throw $this->createError(sprintf('Class \'%s\' not found', $name), $stmt);
+        }
+    }
+
+    /**
+     * Ensure that a statically called method exists.
+     *
+     * @throws FatalErrorException
+     *
+     * @param string $class
+     * @param string $name
+     * @param Stmt   $stmt
+     */
+    protected function ensureMethodExists($class, $name, $stmt)
+    {
+        $this->ensureClassExists($class, $stmt);
+
+        // if method name is an expression, give it a pass for now
+        if ($name instanceof Expr) {
+            return;
+        }
+
+        if (!method_exists($class, $name) && !method_exists($class, '__callStatic')) {
+            throw $this->createError(sprintf('Call to undefined method %s::%s()', $class, $name), $stmt);
+        }
+    }
+
+    /**
+     * Ensure that a referenced interface exists.
+     *
+     * @throws FatalErrorException
+     *
+     * @param $interfaces
+     * @param Stmt $stmt
+     */
+    protected function ensureInterfacesExist($interfaces, $stmt)
+    {
+        foreach ($interfaces as $interface) {
+            /** @var string $name */
+            $name = $this->getFullyQualifiedName($interface);
+            if (!$this->interfaceExists($name)) {
+                throw $this->createError(sprintf('Interface \'%s\' not found', $name), $stmt);
+            }
+        }
+    }
+
+    /**
+     * Get a symbol type key for storing in the scope name cache.
+     *
+     * @param Stmt $stmt
+     *
+     * @return string
+     */
+    protected function getScopeType(Stmt $stmt)
+    {
+        if ($stmt instanceof ClassStmt) {
+            return self::CLASS_TYPE;
+        } elseif ($stmt instanceof InterfaceStmt) {
+            return self::INTERFACE_TYPE;
+        } elseif ($stmt instanceof TraitStmt) {
+            return self::TRAIT_TYPE;
+        }
+    }
+
+    /**
+     * Check whether a class exists, or has been defined in the current code snippet.
+     *
+     * @param string $name
+     *
+     * @return boolean
+     */
+    protected function classExists($name)
+    {
+        return class_exists($name) || $this->findInScope($name) === self::CLASS_TYPE;
+    }
+
+    /**
+     * Check whether an interface exists, or has been defined in the current code snippet.
+     *
+     * @param string $name
+     *
+     * @return boolean
+     */
+    protected function interfaceExists($name)
+    {
+        return interface_exists($name) || $this->findInScope($name) === self::INTERFACE_TYPE;
+    }
+
+    /**
+     * Check whether a trait exists, or has been defined in the current code snippet.
+     *
+     * @param string $name
+     *
+     * @return boolean
+     */
+    protected function traitExists($name)
+    {
+        return $this->checkTraits && (trait_exists($name) || $this->findInScope($name) === self::TRAIT_TYPE);
+    }
+
+    /**
+     * Find a symbol in the current code snippet scope.
+     *
+     * @param string $name
+     *
+     * @return string|null
+     */
+    protected function findInScope($name)
+    {
+        $name = strtolower($name);
+        if (isset($this->currentScope[$name])) {
+            return $this->currentScope[$name];
+        }
+    }
+
+    /**
+     * Error creation factory.
+     *
+     * @param string $msg
+     * @param Stmt   $stmt
+     *
+     * @return FatalErrorException
+     */
+    protected function createError($msg, $stmt)
+    {
+        return new FatalErrorException($msg, 0, 1, null, $stmt->getLine());
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/ValidConstantPass.php

@@ -0,0 +1,79 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr;
+use PhpParser\Node\Expr\ClassConstFetch;
+use PhpParser\Node\Expr\ConstFetch;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that namespaced constant references will succeed.
+ *
+ * This pass throws a FatalErrorException rather than letting PHP run
+ * headfirst into a real fatal error and die.
+ *
+ * @todo Detect constants defined in the current code snippet?
+ *       ... Might not be worth it, since it would need to both be defining and
+ *       referencing a namespaced constant, which doesn't seem like that big of
+ *       a target for failure.
+ */
+class ValidConstantPass extends NamespaceAwarePass
+{
+    /**
+     * Validate that namespaced constant references will succeed.
+     *
+     * Note that this does not (yet) detect constants defined in the current code
+     * snippet. It won't happen very often, so we'll punt for now.
+     *
+     * @throws FatalErrorException if a constant reference is not defined.
+     *
+     * @param Node $node
+     */
+    public function leaveNode(Node $node)
+    {
+        if ($node instanceof ConstFetch && count($node->name->parts) > 1) {
+            $name = $this->getFullyQualifiedName($node->name);
+            if (!defined($name)) {
+                throw new FatalErrorException(sprintf('Undefined constant %s', $name), 0, 1, null, $node->getLine());
+            }
+        } elseif ($node instanceof ClassConstFetch) {
+            $this->validateClassConstFetchExpression($node);
+        }
+    }
+
+    /**
+     * Validate a class constant fetch expression.
+     *
+     * @throws FatalErrorException if a class constant is not defined.
+     *
+     * @param ClassConstFetch $stmt
+     */
+    protected function validateClassConstFetchExpression(ClassConstFetch $stmt)
+    {
+        // if class name is an expression, give it a pass for now
+        if (!$stmt->class instanceof Expr) {
+            $className = $this->getFullyQualifiedName($stmt->class);
+
+            // if the class doesn't exist, don't throw an exception… it might be
+            // defined in the same line it's used or something stupid like that.
+            if (class_exists($className)) {
+                $constName = sprintf('%s::%s', $className, $stmt->name);
+                if (!defined($constName)) {
+                    $msg = sprintf('Class constant \'%s\' not found', $constName);
+                    throw new FatalErrorException($msg, 0, 1, null, $stmt->getLine());
+                }
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/CodeCleaner/ValidFunctionNamePass.php

@@ -0,0 +1,60 @@
+<?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\CodeCleaner;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Stmt\Function_ as FunctionStmt;
+use Psy\Exception\FatalErrorException;
+
+/**
+ * Validate that function calls will succeed.
+ *
+ * This pass throws a FatalErrorException rather than letting PHP run
+ * headfirst into a real fatal error and die.
+ */
+class ValidFunctionNamePass extends NamespaceAwarePass
+{
+    /**
+     * Validate that function calls will succeed.
+     *
+     * @throws FatalErrorException if a function is redefined.
+     * @throws FatalErrorException if the function name is a string (not an expression) and is not defined.
+     *
+     * @param Node $node
+     */
+    public function leaveNode(Node $node)
+    {
+        if ($node instanceof FunctionStmt) {
+            $name = $this->getFullyQualifiedName($node->name);
+
+            if (function_exists($name) || isset($this->currentScope[strtolower($name)])) {
+                throw new FatalErrorException(sprintf('Cannot redeclare %s()', $name), 0, 1, null, $node->getLine());
+            }
+
+            $this->currentScope[strtolower($name)] = true;
+        } elseif ($node instanceof FuncCall) {
+            // if function name is an expression or a variable, give it a pass for now.
+            $name = $node->name;
+            if (!$name instanceof Expression && !$name instanceof Variable) {
+                $shortName = implode('\\', $name->parts);
+                $fullName  = $this->getFullyQualifiedName($name);
+                $inScope = isset($this->currentScope[strtolower($fullName)]);
+                if (!$inScope && !function_exists($shortName) && !function_exists($fullName)) {
+                    $message = sprintf('Call to undefined function %s()', $name);
+                    throw new FatalErrorException($message, 0, 1, null, $node->getLine());
+                }
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/BufferCommand.php

@@ -0,0 +1,77 @@
+<?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\Command;
+
+use Psy\Output\ShellOutput;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Interact with the current code buffer.
+ *
+ * Shows and clears the buffer for the current multi-line expression.
+ */
+class BufferCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('buffer')
+            ->setAliases(array('buf'))
+            ->setDefinition(array(
+                new InputOption('clear', '', InputOption::VALUE_NONE, 'Clear the current buffer.'),
+            ))
+            ->setDescription('Show (or clear) the contents of the code input buffer.')
+            ->setHelp(
+                <<<HELP
+Show the contents of the code buffer for the current multi-line expression.
+
+Optionally, clear the buffer by passing the <info>--clear</info> option.
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $buf = $this->getApplication()->getCodeBuffer();
+        if ($input->getOption('clear')) {
+            $this->getApplication()->resetCodeBuffer();
+            $output->writeln($this->formatLines($buf, 'urgent'), ShellOutput::NUMBER_LINES);
+        } else {
+            $output->writeln($this->formatLines($buf), ShellOutput::NUMBER_LINES);
+        }
+    }
+
+    /**
+     * A helper method for wrapping buffer lines in `<urgent>` and `<return>` formatter strings.
+     *
+     * @param array  $lines
+     * @param string $type  (default: 'return')
+     *
+     * @return array Formatted strings
+     */
+    protected function formatLines(array $lines, $type = 'return')
+    {
+        $template = sprintf('<%s>%%s</%s>', $type, $type);
+
+        return array_map(function ($line) use ($template) {
+            return sprintf($template, $line);
+        }, $lines);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ClearCommand.php

@@ -0,0 +1,49 @@
+<?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\Command;
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Clear the Psy Shell.
+ *
+ * Just what it says on the tin.
+ */
+class ClearCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('clear')
+            ->setDefinition(array())
+            ->setDescription('Clear the Psy Shell screen.')
+            ->setHelp(
+                <<<HELP
+Clear the Psy Shell screen.
+
+Pro Tip: If your PHP has readline support, you should be able to use ctrl+l too!
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->write(sprintf('%c[2J%c[0;0f', 27, 27));
+    }
+}

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

@@ -0,0 +1,282 @@
+<?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\Command;
+
+use Psy\Shell;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Command\Command as BaseCommand;
+use Symfony\Component\Console\Helper\Table;
+use Symfony\Component\Console\Helper\TableHelper;
+use Symfony\Component\Console\Helper\TableStyle;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * The Psy Shell base command.
+ */
+abstract class Command extends BaseCommand
+{
+    /**
+     * Sets the application instance for this command.
+     *
+     * @param Application $application An Application instance
+     *
+     * @api
+     */
+    public function setApplication(Application $application = null)
+    {
+        if ($application !== null && !$application instanceof Shell) {
+            throw new \InvalidArgumentException('PsySH Commands require an instance of Psy\Shell.');
+        }
+
+        return parent::setApplication($application);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function asText()
+    {
+        $messages = array(
+            '<comment>Usage:</comment>',
+            ' ' . $this->getSynopsis(),
+            '',
+        );
+
+        if ($this->getAliases()) {
+            $messages[] = $this->aliasesAsText();
+        }
+
+        if ($this->getArguments()) {
+            $messages[] = $this->argumentsAsText();
+        }
+
+        if ($this->getOptions()) {
+            $messages[] = $this->optionsAsText();
+        }
+
+        if ($help = $this->getProcessedHelp()) {
+            $messages[] = '<comment>Help:</comment>';
+            $messages[] = ' ' . str_replace("\n", "\n ", $help) . "\n";
+        }
+
+        return implode("\n", $messages);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    private function getArguments()
+    {
+        $hidden = $this->getHiddenArguments();
+
+        return array_filter($this->getNativeDefinition()->getArguments(), function ($argument) use ($hidden) {
+            return !in_array($argument->getName(), $hidden);
+        });
+    }
+
+    /**
+     * These arguments will be excluded from help output.
+     *
+     * @return array
+     */
+    protected function getHiddenArguments()
+    {
+        return array('command');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    private function getOptions()
+    {
+        $hidden = $this->getHiddenOptions();
+
+        return array_filter($this->getNativeDefinition()->getOptions(), function ($option) use ($hidden) {
+            return !in_array($option->getName(), $hidden);
+        });
+    }
+
+    /**
+     * These options will be excluded from help output.
+     *
+     * @return array
+     */
+    protected function getHiddenOptions()
+    {
+        return array('verbose');
+    }
+
+    /**
+     * Format command aliases as text..
+     *
+     * @return string
+     */
+    private function aliasesAsText()
+    {
+        return '<comment>Aliases:</comment> <info>' . implode(', ', $this->getAliases()) . '</info>' . PHP_EOL;
+    }
+
+    /**
+     * Format command arguments as text.
+     *
+     * @return string
+     */
+    private function argumentsAsText()
+    {
+        $max = $this->getMaxWidth();
+        $messages = array();
+
+        $arguments = $this->getArguments();
+        if (!empty($arguments)) {
+            $messages[] = '<comment>Arguments:</comment>';
+            foreach ($arguments as $argument) {
+                if (null !== $argument->getDefault() && (!is_array($argument->getDefault()) || count($argument->getDefault()))) {
+                    $default = sprintf('<comment> (default: %s)</comment>', $this->formatDefaultValue($argument->getDefault()));
+                } else {
+                    $default = '';
+                }
+
+                $description = str_replace("\n", "\n" . str_pad('', $max + 2, ' '), $argument->getDescription());
+
+                $messages[] = sprintf(" <info>%-${max}s</info> %s%s", $argument->getName(), $description, $default);
+            }
+
+            $messages[] = '';
+        }
+
+        return implode(PHP_EOL, $messages);
+    }
+
+    /**
+     * Format options as text.
+     *
+     * @return string
+     */
+    private function optionsAsText()
+    {
+        $max = $this->getMaxWidth();
+        $messages = array();
+
+        $options = $this->getOptions();
+        if ($options) {
+            $messages[] = '<comment>Options:</comment>';
+
+            foreach ($options as $option) {
+                if ($option->acceptValue() && null !== $option->getDefault() && (!is_array($option->getDefault()) || count($option->getDefault()))) {
+                    $default = sprintf('<comment> (default: %s)</comment>', $this->formatDefaultValue($option->getDefault()));
+                } else {
+                    $default = '';
+                }
+
+                $multiple = $option->isArray() ? '<comment> (multiple values allowed)</comment>' : '';
+                $description = str_replace("\n", "\n" . str_pad('', $max + 2, ' '), $option->getDescription());
+
+                $optionMax = $max - strlen($option->getName()) - 2;
+                $messages[] = sprintf(
+                    " <info>%s</info> %-${optionMax}s%s%s%s",
+                    '--' . $option->getName(),
+                    $option->getShortcut() ? sprintf('(-%s) ', $option->getShortcut()) : '',
+                    $description,
+                    $default,
+                    $multiple
+                );
+            }
+
+            $messages[] = '';
+        }
+
+        return implode(PHP_EOL, $messages);
+    }
+
+    /**
+     * Calculate the maximum padding width for a set of lines.
+     *
+     * @return int
+     */
+    private function getMaxWidth()
+    {
+        $max = 0;
+
+        foreach ($this->getOptions() as $option) {
+            $nameLength = strlen($option->getName()) + 2;
+            if ($option->getShortcut()) {
+                $nameLength += strlen($option->getShortcut()) + 3;
+            }
+
+            $max = max($max, $nameLength);
+        }
+
+        foreach ($this->getArguments() as $argument) {
+            $max = max($max, strlen($argument->getName()));
+        }
+
+        return ++$max;
+    }
+
+    /**
+     * Format an option default as text.
+     *
+     * @param mixed $default
+     *
+     * @return string
+     */
+    private function formatDefaultValue($default)
+    {
+        if (is_array($default) && $default === array_values($default)) {
+            return sprintf("array('%s')", implode("', '", $default));
+        }
+
+        return str_replace("\n", '', var_export($default, true));
+    }
+
+    /**
+     * Get a Table instance.
+     *
+     * Falls back to legacy TableHelper.
+     *
+     * @return Table|TableHelper
+     */
+    protected function getTable(OutputInterface $output)
+    {
+        if (!class_exists('Symfony\Component\Console\Helper\Table')) {
+            return $this->getTableHelper();
+        }
+
+        $style = new TableStyle();
+        $style
+            ->setVerticalBorderChar(' ')
+            ->setHorizontalBorderChar('')
+            ->setCrossingChar('');
+
+        $table = new Table($output);
+
+        return $table
+            ->setRows(array())
+            ->setStyle($style);
+    }
+
+    /**
+     * Legacy fallback for getTable.
+     *
+     * @return TableHelper
+     */
+    protected function getTableHelper()
+    {
+        $table = $this->getApplication()->getHelperSet()->get('table');
+
+        return $table
+            ->setRows(array())
+            ->setLayout(TableHelper::LAYOUT_BORDERLESS)
+            ->setHorizontalBorderChar('')
+            ->setCrossingChar('');
+    }
+}

vendor/psy/psysh/src/Psy/Command/DocCommand.php

@@ -0,0 +1,98 @@
+<?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\Command;
+
+use Psy\Formatter\DocblockFormatter;
+use Psy\Formatter\SignatureFormatter;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Read the documentation for an object, class, constant, method or property.
+ */
+class DocCommand extends ReflectingCommand
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('doc')
+            ->setAliases(array('rtfm', 'man'))
+            ->setDefinition(array(
+                new InputArgument('value', InputArgument::REQUIRED, 'Function, class, instance, constant, method or property to document.'),
+            ))
+            ->setDescription('Read the documentation for an object, class, constant, method or property.')
+            ->setHelp(
+                <<<HELP
+Read the documentation for an object, class, constant, method or property.
+
+It's awesome for well-documented code, not quite as awesome for poorly documented code.
+
+e.g.
+<return>>>> doc preg_replace</return>
+<return>>>> doc Psy\Shell</return>
+<return>>>> doc Psy\Shell::debug</return>
+<return>>>> \$s = new Psy\Shell</return>
+<return>>>> doc \$s->run</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        list($value, $reflector) = $this->getTargetAndReflector($input->getArgument('value'));
+
+        $doc = $this->getManualDoc($reflector) ?: DocblockFormatter::format($reflector);
+        $db  = $this->getApplication()->getManualDb();
+
+        $output->page(function ($output) use ($reflector, $doc, $db) {
+            $output->writeln(SignatureFormatter::format($reflector));
+            if (empty($doc) && !$db) {
+                $output->writeln('');
+                $output->writeln('<warning>PHP manual not found</warning>');
+                $output->writeln('    To document core PHP functionality, download the PHP reference manual:');
+                $output->writeln('    https://github.com/bobthecow/psysh#downloading-the-manual');
+            } else {
+                $output->writeln('');
+                $output->writeln($doc);
+            }
+        });
+    }
+
+    private function getManualDoc($reflector)
+    {
+        switch (get_class($reflector)) {
+            case 'ReflectionFunction':
+                $id = $reflector->name;
+                break;
+
+            case 'ReflectionMethod':
+                $id = $reflector->class . '::' . $reflector->name;
+                break;
+
+            default:
+                return false;
+        }
+
+        if ($db = $this->getApplication()->getManualDb()) {
+            return $db
+                ->query(sprintf('SELECT doc FROM php_manual WHERE id = %s', $db->quote($id)))
+                ->fetchColumn(0);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/DumpCommand.php

@@ -0,0 +1,96 @@
+<?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\Command;
+
+use Psy\Exception\RuntimeException;
+use Psy\Presenter\Presenter;
+use Psy\Presenter\PresenterManager;
+use Psy\Presenter\PresenterManagerAware;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Dump an object or primitive.
+ *
+ * This is like var_dump but *way* awesomer.
+ */
+class DumpCommand extends ReflectingCommand implements PresenterManagerAware
+{
+    private $presenterManager;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->presenterManager = $manager;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('dump')
+            ->setDefinition(array(
+                new InputArgument('target', InputArgument::REQUIRED, 'A target object or primitive to dump.', null),
+                new InputOption('depth', '', InputOption::VALUE_REQUIRED, 'Depth to parse', 10),
+                new InputOption('all', 'a', InputOption::VALUE_NONE, 'Include private and protected methods and properties.'),
+            ))
+            ->setDescription('Dump an object or primitive.')
+            ->setHelp(
+                <<<HELP
+Dump an object or primitive.
+
+This is like var_dump but <strong>way</strong> awesomer.
+
+e.g.
+<return>>>> dump \$_</return>
+<return>>>> dump \$someVar</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $depth  = $input->getOption('depth');
+        $target = $this->resolveTarget($input->getArgument('target'));
+        $output->page($this->presenterManager->present($target, $depth, $input->getOption('all') ? Presenter::VERBOSE : 0));
+    }
+
+    /**
+     * Resolve dump target name.
+     *
+     * @throws RuntimeException if target name does not exist in the current scope.
+     *
+     * @param string $target
+     *
+     * @return mixed
+     */
+    protected function resolveTarget($target)
+    {
+        $matches = array();
+        if (preg_match(self::INSTANCE, $target, $matches)) {
+            return $this->getScopeVariable($matches[1]);
+        } else {
+            throw new RuntimeException('Unknown target: ' . $target);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ExitCommand.php

@@ -0,0 +1,52 @@
+<?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\Command;
+
+use Psy\Exception\BreakException;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Exit the Psy Shell.
+ *
+ * Just what it says on the tin.
+ */
+class ExitCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('exit')
+            ->setAliases(array('quit', 'q'))
+            ->setDefinition(array())
+            ->setDescription('End the current session and return to caller.')
+            ->setHelp(
+                <<<HELP
+End the current session and return to caller.
+
+e.g.
+<return>>>> exit</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        throw new BreakException('Goodbye.');
+    }
+}

vendor/psy/psysh/src/Psy/Command/HelpCommand.php

@@ -0,0 +1,98 @@
+<?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\Command;
+
+use Symfony\Component\Console\Helper\TableHelper;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Help command.
+ *
+ * Lists available commands, and gives command-specific help when asked nicely.
+ */
+class HelpCommand extends Command
+{
+    private $command;
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('help')
+            ->setAliases(array('?'))
+            ->setDefinition(array(
+                new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', null),
+            ))
+            ->setDescription('Show a list of commands. Type `help [foo]` for information about [foo].')
+            ->setHelp('My. How meta.');
+    }
+
+    /**
+     * Helper for setting a subcommand to retrieve help for.
+     *
+     * @param Command $command
+     */
+    public function setCommand($command)
+    {
+        $this->command = $command;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        if ($this->command !== null) {
+            // help for an individual command
+            $output->page($this->command->asText());
+            $this->command = null;
+        } elseif ($name = $input->getArgument('command_name')) {
+            // help for an individual command
+            $output->page($this->getApplication()->get($name)->asText());
+        } else {
+            // list available commands
+            $commands = $this->getApplication()->all();
+
+            $table = $this->getTable($output);
+
+            foreach ($commands as $name => $command) {
+                if ($name !== $command->getName()) {
+                    continue;
+                }
+
+                if ($command->getAliases()) {
+                    $aliases = sprintf('<comment>Aliases:</comment> %s', implode(', ', $command->getAliases()));
+                } else {
+                    $aliases = '';
+                }
+
+                $table->addRow(array(
+                    sprintf('<info>%s</info>', $name),
+                    $command->getDescription(),
+                    $aliases,
+                ));
+            }
+
+            $output->startPaging();
+            if ($table instanceof TableHelper) {
+                $table->render($output);
+            } else {
+                $table->render();
+            }
+            $output->stopPaging();
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/HistoryCommand.php

@@ -0,0 +1,260 @@
+<?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\Command;
+
+use Psy\Output\ShellOutput;
+use Psy\Readline\Readline;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Psy Shell history command.
+ *
+ * Shows, searches and replays readline history. Not too shabby.
+ */
+class HistoryCommand extends Command
+{
+    /**
+     * Set the Shell's Readline service.
+     *
+     * @param Readline $readline
+     */
+    public function setReadline(Readline $readline)
+    {
+        $this->readline = $readline;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('history')
+            ->setAliases(array('hist'))
+            ->setDefinition(array(
+                new InputOption('show',        's', InputOption::VALUE_REQUIRED, 'Show the given range of lines'),
+                new InputOption('head',        'H', InputOption::VALUE_REQUIRED, 'Display the first N items.'),
+                new InputOption('tail',        'T', InputOption::VALUE_REQUIRED, 'Display the last N items.'),
+
+                new InputOption('grep',        'G', InputOption::VALUE_REQUIRED, 'Show lines matching the given pattern (string or regex).'),
+                new InputOption('insensitive', 'i', InputOption::VALUE_NONE,     'Case insensitive search (requires --grep).'),
+                new InputOption('invert',      'v', InputOption::VALUE_NONE,     'Inverted search (requires --grep).'),
+
+                new InputOption('no-numbers',  'N', InputOption::VALUE_NONE,     'Omit line numbers.'),
+
+                new InputOption('save',        '',  InputOption::VALUE_REQUIRED, 'Save history to a file.'),
+                new InputOption('replay',      '',  InputOption::VALUE_NONE,     'Replay'),
+                new InputOption('clear',       '',  InputOption::VALUE_NONE,     'Clear the history.'),
+            ))
+            ->setDescription('Show the Psy Shell history.')
+            ->setHelp(
+                <<<HELP
+Show, search, save or replay the Psy Shell history.
+
+e.g.
+<return>>>> history --grep /[bB]acon/</return>
+<return>>>> history --show 0..10 --replay</return>
+<return>>>> history --clear</return>
+<return>>>> history --tail 1000 --save somefile.txt</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $this->validateOnlyOne($input, array('show', 'head', 'tail'));
+        $this->validateOnlyOne($input, array('save', 'replay', 'clear'));
+
+        $history = $this->getHistorySlice(
+            $input->getOption('show'),
+            $input->getOption('head'),
+            $input->getOption('tail')
+        );
+        $highlighted = false;
+
+        $invert      = $input->getOption('invert');
+        $insensitive = $input->getOption('insensitive');
+        if ($pattern = $input->getOption('grep')) {
+            if (substr($pattern, 0, 1) !== '/' || substr($pattern, -1) !== '/' || strlen($pattern) < 3) {
+                $pattern = '/' . preg_quote($pattern, '/') . '/';
+            }
+
+            if ($insensitive) {
+                $pattern .= 'i';
+            }
+
+            $this->validateRegex($pattern);
+
+            $matches     = array();
+            $highlighted = array();
+            foreach ($history as $i => $line) {
+                if (preg_match($pattern, $line, $matches) xor $invert) {
+                    if (!$invert) {
+                        $chunks = explode($matches[0], $history[$i]);
+                        $chunks = array_map(array(__CLASS__, 'escape'), $chunks);
+                        $glue   = sprintf('<urgent>%s</urgent>', self::escape($matches[0]));
+
+                        $highlighted[$i] = implode($glue, $chunks);
+                    }
+                } else {
+                    unset($history[$i]);
+                }
+            }
+        } elseif ($invert) {
+            throw new \InvalidArgumentException('Cannot use -v without --grep.');
+        } elseif ($insensitive) {
+            throw new \InvalidArgumentException('Cannot use -i without --grep.');
+        }
+
+        if ($save = $input->getOption('save')) {
+            $output->writeln(sprintf('Saving history in %s...', $save));
+            file_put_contents($save, implode(PHP_EOL, $history) . PHP_EOL);
+            $output->writeln('<info>History saved.</info>');
+        } elseif ($input->getOption('replay')) {
+            if (!($input->getOption('show') || $input->getOption('head') || $input->getOption('tail'))) {
+                throw new \InvalidArgumentException('You must limit history via --head, --tail or --show before replaying.');
+            }
+
+            $count = count($history);
+            $output->writeln(sprintf('Replaying %d line%s of history', $count, ($count !== 1) ? 's' : ''));
+            $this->getApplication()->addInput($history);
+        } elseif ($input->getOption('clear')) {
+            $this->clearHistory();
+            $output->writeln('<info>History cleared.</info>');
+        } else {
+            $type = $input->getOption('no-numbers') ? 0 : ShellOutput::NUMBER_LINES;
+            if (!$highlighted) {
+                $type = $type | ShellOutput::OUTPUT_RAW;
+            }
+
+            $output->page($highlighted ?: $history, $type);
+        }
+    }
+
+    /**
+     * Extract a range from a string.
+     *
+     * @param string $range
+     *
+     * @return array [ start, end ]
+     */
+    private function extractRange($range)
+    {
+        if (preg_match('/^\d+$/', $range)) {
+            return array($range, $range + 1);
+        }
+
+        $matches = array();
+        if ($range !== '..' && preg_match('/^(\d*)\.\.(\d*)$/', $range, $matches)) {
+            $start = $matches[1] ? intval($matches[1]) : 0;
+            $end   = $matches[2] ? intval($matches[2]) + 1 : PHP_INT_MAX;
+
+            return array($start, $end);
+        }
+
+        throw new \InvalidArgumentException('Unexpected range: ' . $range);
+    }
+
+    /**
+     * Retrieve a slice of the readline history.
+     *
+     * @param string $show
+     * @param string $head
+     * @param string $tail
+     *
+     * @return array A slilce of history.
+     */
+    private function getHistorySlice($show, $head, $tail)
+    {
+        $history = $this->readline->listHistory();
+
+        if ($show) {
+            list($start, $end) = $this->extractRange($show);
+            $length = $end - $start;
+        } elseif ($head) {
+            if (!preg_match('/^\d+$/', $head)) {
+                throw new \InvalidArgumentException('Please specify an integer argument for --head.');
+            }
+
+            $start  = 0;
+            $length = intval($head);
+        } elseif ($tail) {
+            if (!preg_match('/^\d+$/', $tail)) {
+                throw new \InvalidArgumentException('Please specify an integer argument for --tail.');
+            }
+
+            $start  = count($history) - $tail;
+            $length = intval($tail) + 1;
+        } else {
+            return $history;
+        }
+
+        return array_slice($history, $start, $length, true);
+    }
+
+    /**
+     * Validate that $pattern is a valid regular expression.
+     *
+     * @param string $pattern
+     *
+     * @return boolean
+     */
+    private function validateRegex($pattern)
+    {
+        set_error_handler(array('Psy\Exception\ErrorException', 'throwException'));
+        try {
+            preg_match($pattern, '');
+        } catch (ErrorException $e) {
+            throw new RuntimeException(str_replace('preg_match(): ', 'Invalid regular expression: ', $e->getRawMessage()));
+        }
+        restore_error_handler();
+    }
+
+    /**
+     * Validate that only one of the given $options is set.
+     *
+     * @param InputInterface $input
+     * @param array          $options
+     */
+    private function validateOnlyOne(InputInterface $input, array $options)
+    {
+        $count = 0;
+        foreach ($options as $opt) {
+            if ($input->getOption($opt)) {
+                $count++;
+            }
+        }
+
+        if ($count > 1) {
+            throw new \InvalidArgumentException('Please specify only one of --' . implode(', --', $options));
+        }
+    }
+
+    /**
+     * Clear the readline history.
+     */
+    private function clearHistory()
+    {
+        $this->readline->clearHistory();
+    }
+
+    public static function escape($string)
+    {
+        return OutputFormatter::escape($string);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand.php

@@ -0,0 +1,278 @@
+<?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\Command;
+
+use Psy\Command\ListCommand\ClassConstantEnumerator;
+use Psy\Command\ListCommand\ClassEnumerator;
+use Psy\Command\ListCommand\ConstantEnumerator;
+use Psy\Command\ListCommand\FunctionEnumerator;
+use Psy\Command\ListCommand\GlobalVariableEnumerator;
+use Psy\Command\ListCommand\InterfaceEnumerator;
+use Psy\Command\ListCommand\MethodEnumerator;
+use Psy\Command\ListCommand\PropertyEnumerator;
+use Psy\Command\ListCommand\TraitEnumerator;
+use Psy\Command\ListCommand\VariableEnumerator;
+use Psy\Exception\RuntimeException;
+use Psy\Presenter\PresenterManager;
+use Psy\Presenter\PresenterManagerAware;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use Symfony\Component\Console\Helper\TableHelper;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * List available local variables, object properties, etc.
+ */
+class ListCommand extends ReflectingCommand implements PresenterManagerAware
+{
+    protected $presenterManager;
+    protected $enumerators;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->presenterManager = $manager;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('ls')
+            ->setAliases(array('list', 'dir'))
+            ->setDefinition(array(
+                new InputArgument('target', InputArgument::OPTIONAL, 'A target class or object to list.', null),
+
+                new InputOption('vars',        '',  InputOption::VALUE_NONE,     'Display variables.'),
+                new InputOption('constants',   'c', InputOption::VALUE_NONE,     'Display defined constants.'),
+                new InputOption('functions',   'f', InputOption::VALUE_NONE,     'Display defined functions.'),
+                new InputOption('classes',     'k', InputOption::VALUE_NONE,     'Display declared classes.'),
+                new InputOption('interfaces',  'I', InputOption::VALUE_NONE,     'Display declared interfaces.'),
+                new InputOption('traits',      't', InputOption::VALUE_NONE,     'Display declared traits.'),
+
+                new InputOption('properties',  'p', InputOption::VALUE_NONE,     'Display class or object properties (public properties by default).'),
+                new InputOption('methods',     'm', InputOption::VALUE_NONE,     'Display class or object methods (public methods by default).'),
+
+                new InputOption('grep',        'G', InputOption::VALUE_REQUIRED, 'Limit to items matching the given pattern (string or regex).'),
+                new InputOption('insensitive', 'i', InputOption::VALUE_NONE,     'Case-insensitive search (requires --grep).'),
+                new InputOption('invert',      'v', InputOption::VALUE_NONE,     'Inverted search (requires --grep).'),
+
+                new InputOption('globals',     'g', InputOption::VALUE_NONE,     'Include global variables.'),
+                new InputOption('internal',    'n', InputOption::VALUE_NONE,     'Limit to internal functions and classes.'),
+                new InputOption('user',        'u', InputOption::VALUE_NONE,     'Limit to user-defined constants, functions and classes.'),
+                new InputOption('category',    'C', InputOption::VALUE_REQUIRED, 'Limit to constants in a specific category (e.g. "date").'),
+
+                new InputOption('all',         'a', InputOption::VALUE_NONE,     'Include private and protected methods and properties.'),
+                new InputOption('long',        'l', InputOption::VALUE_NONE,     'List in long format: includes class names and method signatures.'),
+            ))
+            ->setDescription('List local, instance or class variables, methods and constants.')
+            ->setHelp(
+                <<<HELP
+List variables, constants, classes, interfaces, traits, functions, methods,
+and properties.
+
+Called without options, this will return a list of variables currently in scope.
+
+If a target object is provided, list properties, constants and methods of that
+target. If a class, interface or trait name is passed instead, list constants
+and methods on that class.
+
+e.g.
+<return>>>> ls</return>
+<return>>>> ls \$foo</return>
+<return>>>> ls -k --grep mongo -i</return>
+<return>>>> ls -al ReflectionClass</return>
+<return>>>> ls --constants --category date</return>
+<return>>>> ls -l --functions --grep /^array_.*/</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $this->validateInput($input);
+        $this->initEnumerators();
+
+        $method = $input->getOption('long') ? 'writeLong' : 'write';
+
+        if ($target = $input->getArgument('target')) {
+            list($target, $reflector) = $this->getTargetAndReflector($target, true);
+        } else {
+            $reflector = null;
+        }
+
+        // TODO: something cleaner than this :-/
+        if ($input->getOption('long')) {
+            $output->startPaging();
+        }
+
+        foreach ($this->enumerators as $enumerator) {
+            $this->$method($output, $enumerator->enumerate($input, $reflector, $target));
+        }
+
+        if ($input->getOption('long')) {
+            $output->stopPaging();
+        }
+    }
+
+    /**
+     * Initialize Enumerators.
+     */
+    protected function initEnumerators()
+    {
+        if (!isset($this->enumerators)) {
+            $mgr = $this->presenterManager;
+
+            $this->enumerators = array(
+                new ClassConstantEnumerator($mgr),
+                new ClassEnumerator($mgr),
+                new ConstantEnumerator($mgr),
+                new FunctionEnumerator($mgr),
+                new GlobalVariableEnumerator($mgr),
+                new InterfaceEnumerator($mgr),
+                new PropertyEnumerator($mgr),
+                new MethodEnumerator($mgr),
+                new TraitEnumerator($mgr),
+                new VariableEnumerator($mgr, $this->context),
+            );
+        }
+    }
+
+    /**
+     * Write the list items to $output.
+     *
+     * @param OutputInterface $output
+     * @param null|array      $result List of enumerated items.
+     */
+    protected function write(OutputInterface $output, array $result = null)
+    {
+        if ($result === null) {
+            return;
+        }
+
+        foreach ($result as $label => $items) {
+            $names = array_map(array($this, 'formatItemName'), $items);
+            $output->writeln(sprintf('<strong>%s</strong>: %s', $label, implode(', ', $names)));
+        }
+    }
+
+    /**
+     * Write the list items to $output.
+     *
+     * Items are listed one per line, and include the item signature.
+     *
+     * @param OutputInterface $output
+     * @param null|array      $result List of enumerated items.
+     */
+    protected function writeLong(OutputInterface $output, array $result = null)
+    {
+        if ($result === null) {
+            return;
+        }
+
+        $table = $this->getTable($output);
+
+        foreach ($result as $label => $items) {
+            $output->writeln('');
+            $output->writeln(sprintf('<strong>%s:</strong>', $label));
+
+            $table->setRows(array());
+            foreach ($items as $item) {
+                $table->addRow(array($this->formatItemName($item), $item['value']));
+            }
+
+            if ($table instanceof TableHelper) {
+                $table->render($output);
+            } else {
+                $table->render();
+            }
+        }
+    }
+
+    /**
+     * Format an item name given its visibility.
+     *
+     * @param array $item
+     *
+     * @return string
+     */
+    private function formatItemName($item)
+    {
+        return sprintf('<%s>%s</%s>', $item['style'], OutputFormatter::escape($item['name']), $item['style']);
+    }
+
+    /**
+     * Validate that input options make sense, provide defaults when called without options.
+     *
+     * @throws RuntimeException if options are inconsistent.
+     *
+     * @param InputInterface $input
+     */
+    private function validateInput(InputInterface $input)
+    {
+        // grep, invert and insensitive
+        if (!$input->getOption('grep')) {
+            foreach (array('invert', 'insensitive') as $option) {
+                if ($input->getOption($option)) {
+                    throw new RuntimeException('--' . $option . ' does not make sense without --grep');
+                }
+            }
+        }
+
+        if (!$input->getArgument('target')) {
+            // if no target is passed, there can be no properties or methods
+            foreach (array('properties', 'methods') as $option) {
+                if ($input->getOption($option)) {
+                    throw new RuntimeException('--' . $option . ' does not make sense without a specified target.');
+                }
+            }
+
+            foreach (array('globals', 'vars', 'constants', 'functions', 'classes', 'interfaces', 'traits') as $option) {
+                if ($input->getOption($option)) {
+                    return;
+                }
+            }
+
+            // default to --vars if no other options are passed
+            $input->setOption('vars', true);
+        } else {
+            // if a target is passed, classes, functions, etc don't make sense
+            foreach (array('vars', 'globals', 'functions', 'classes', 'interfaces', 'traits') as $option) {
+                if ($input->getOption($option)) {
+                    throw new RuntimeException('--' . $option . ' does not make sense with a specified target.');
+                }
+            }
+
+            foreach (array('constants', 'properties', 'methods') as $option) {
+                if ($input->getOption($option)) {
+                    return;
+                }
+            }
+
+            // default to --constants --properties --methods if no other options are passed
+            $input->setOption('constants',  true);
+            $input->setOption('properties', true);
+            $input->setOption('methods',    true);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/ClassConstantEnumerator.php

@@ -0,0 +1,118 @@
+<?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\Command\ListCommand;
+
+use Psy\Reflection\ReflectionConstant;
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Class Constant Enumerator class.
+ */
+class ClassConstantEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list constants when a Reflector is present.
+
+        if ($reflector === null) {
+            return;
+        }
+
+        // We can only list constants on actual class (or object) reflectors.
+        if (!$reflector instanceof \ReflectionClass) {
+            // TODO: handle ReflectionExtension as well
+            return;
+        }
+
+        // only list constants if we are specifically asked
+        if (!$input->getOption('constants')) {
+            return;
+        }
+
+        $constants = $this->prepareConstants($this->getConstants($reflector));
+
+        if (empty($constants)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$this->getKindLabel($reflector)] = $constants;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined constants for the given class or object Reflector.
+     *
+     * @param \Reflector $reflector
+     *
+     * @return array
+     */
+    protected function getConstants(\Reflector $reflector)
+    {
+        $constants = array();
+        foreach ($reflector->getConstants() as $name => $constant) {
+            $constants[$name] = new ReflectionConstant($reflector, $name);
+        }
+
+        // TODO: this should be natcasesort
+        ksort($constants);
+
+        return $constants;
+    }
+
+    /**
+     * Prepare formatted constant array.
+     *
+     * @param array $constants
+     *
+     * @return array
+     */
+    protected function prepareConstants(array $constants)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($constants as $name => $constant) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CONSTANT,
+                    'value' => $this->presentRef($constant->getValue()),
+                );
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Get a label for the particular kind of "class" represented.
+     *
+     * @param \ReflectionClass $reflector
+     *
+     * @return string
+     */
+    protected function getKindLabel(\ReflectionClass $reflector)
+    {
+        if ($reflector->isInterface()) {
+            return 'Interface Constants';
+        } elseif (method_exists($reflector, 'isTrait') && $reflector->isTrait()) {
+            return 'Trait Constants';
+        } else {
+            return 'Class Constants';
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/ClassEnumerator.php

@@ -0,0 +1,80 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Class Enumerator class.
+ */
+class ClassEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list classes when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --classes Foo
+        //
+        // ... for listing classes in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list classes if we are specifically asked
+        if (!$input->getOption('classes')) {
+            return;
+        }
+
+        $classes = $this->prepareClasses(get_declared_classes());
+
+        if (empty($classes)) {
+            return;
+        }
+
+        return array(
+            'Classes' => $classes,
+        );
+    }
+
+    /**
+     * Prepare formatted class array.
+     *
+     * @param array $class
+     *
+     * @return array
+     */
+    protected function prepareClasses(array $classes)
+    {
+        natcasesort($classes);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($classes as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CLASS,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/ConstantEnumerator.php

@@ -0,0 +1,103 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Constant Enumerator class.
+ */
+class ConstantEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list constants when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --constants Foo
+        //
+        // ... for listing constants in the Foo namespace
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list constants if we are specifically asked
+        if (!$input->getOption('constants')) {
+            return;
+        }
+
+        $category  = $input->getOption('user') ? 'user' : $input->getOption('category');
+        $label     = $category ? ucfirst($category) . ' Constants' : 'Constants';
+        $constants = $this->prepareConstants($this->getConstants($category));
+
+        if (empty($constants)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$label] = $constants;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined constants.
+     *
+     * Optionally restrict constants to a given category, e.g. "date".
+     *
+     * @param string $category
+     *
+     * @return array
+     */
+    protected function getConstants($category = null)
+    {
+        if (!$category) {
+            return get_defined_constants();
+        }
+
+        $consts = get_defined_constants(true);
+
+        return isset($consts[$category]) ? $consts[$category] : array();
+    }
+
+    /**
+     * Prepare formatted constant array.
+     *
+     * @param array $constants
+     *
+     * @return array
+     */
+    protected function prepareConstants(array $constants)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        $names = array_keys($constants);
+        natcasesort($names);
+
+        foreach ($names as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CONSTANT,
+                    'value' => $this->presentRef($constants[$name]),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/Enumerator.php

@@ -0,0 +1,146 @@
+<?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\Command\ListCommand;
+
+use Psy\Formatter\SignatureFormatter;
+use Psy\Presenter\PresenterManager;
+use Psy\Util\Mirror;
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Abstract Enumerator class.
+ */
+abstract class Enumerator
+{
+    // Output styles
+    const IS_PUBLIC    = 'public';
+    const IS_PROTECTED = 'protected';
+    const IS_PRIVATE   = 'private';
+    const IS_GLOBAL    = 'global';
+    const IS_CONSTANT  = 'const';
+    const IS_CLASS     = 'class';
+    const IS_FUNCTION  = 'function';
+
+    private $presenterManager;
+
+    private $filter       = false;
+    private $invertFilter = false;
+    private $pattern;
+
+    /**
+     * Enumerator constructor.
+     *
+     * @param PresenterManager $presenterManager
+     */
+    public function __construct(PresenterManager $presenterManager)
+    {
+        $this->presenterManager = $presenterManager;
+    }
+
+    /**
+     * Return a list of categorized things with the given input options and target.
+     *
+     * @param InputInterface $input
+     * @param Reflector      $reflector
+     * @param mixed          $target
+     *
+     * @return array
+     */
+    public function enumerate(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        $this->setFilter($input);
+
+        return $this->listItems($input, $reflector, $target);
+    }
+
+    /**
+     * Enumerate specific items with the given input options and target.
+     *
+     * Implementing classes should return an array of arrays:
+     *
+     *     [
+     *         'Constants' => [
+     *             'FOO' => [
+     *                 'name'  => 'FOO',
+     *                 'style' => 'public',
+     *                 'value' => '123',
+     *             ],
+     *         ],
+     *     ]
+     *
+     * @param InputInterface $input
+     * @param Reflector      $reflector
+     * @param mixed          $target
+     *
+     * @return array
+     */
+    abstract protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null);
+
+    protected function presentRef($value)
+    {
+        return $this->presenterManager->presentRef($value);
+    }
+
+    protected function showItem($name)
+    {
+        return $this->filter === false || (preg_match($this->pattern, $name) xor $this->invertFilter);
+    }
+
+    private function setFilter(InputInterface $input)
+    {
+        if ($pattern = $input->getOption('grep')) {
+            if (substr($pattern, 0, 1) !== '/' || substr($pattern, -1) !== '/' || strlen($pattern) < 3) {
+                $pattern = '/' . preg_quote($pattern, '/') . '/';
+            }
+
+            if ($input->getOption('insensitive')) {
+                $pattern .= 'i';
+            }
+
+            $this->validateRegex($pattern);
+
+            $this->filter       = true;
+            $this->pattern      = $pattern;
+            $this->invertFilter = $input->getOption('invert');
+        } else {
+            $this->filter = false;
+        }
+    }
+
+    /**
+     * Validate that $pattern is a valid regular expression.
+     *
+     * @param string $pattern
+     *
+     * @return boolean
+     */
+    private function validateRegex($pattern)
+    {
+        set_error_handler(array('Psy\Exception\ErrorException', 'throwException'));
+        try {
+            preg_match($pattern, '');
+        } catch (ErrorException $e) {
+            throw new RuntimeException(str_replace('preg_match(): ', 'Invalid regular expression: ', $e->getRawMessage()));
+        }
+        restore_error_handler();
+    }
+
+    protected function presentSignature($target)
+    {
+        // This might get weird if the signature is actually for a reflector. Hrm.
+        if (!$target instanceof \Reflector) {
+            $target = Mirror::get($target);
+        }
+
+        return SignatureFormatter::format($target);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/FunctionEnumerator.php

@@ -0,0 +1,112 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Function Enumerator class.
+ */
+class FunctionEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list functions when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --functions Foo
+        //
+        // ... for listing functions in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list functions if we are specifically asked
+        if (!$input->getOption('functions')) {
+            return;
+        }
+
+        if ($input->getOption('user')) {
+            $label     = 'User Functions';
+            $functions = $this->getFunctions('user');
+        } elseif ($input->getOption('internal')) {
+            $label     = 'Internal Functions';
+            $functions = $this->getFunctions('internal');
+        } else {
+            $label     = 'Functions';
+            $functions = $this->getFunctions();
+        }
+
+        $functions = $this->prepareFunctions($functions);
+
+        if (empty($functions)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$label] = $functions;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined functions.
+     *
+     * Optionally limit functions to "user" or "internal" functions.
+     *
+     * @param null|string $type "user" or "internal" (default: both)
+     *
+     * @return array
+     */
+    protected function getFunctions($type = null)
+    {
+        $funcs = get_defined_functions();
+
+        if ($type) {
+            return $funcs[$type];
+        } else {
+            return array_merge($funcs['internal'], $funcs['user']);
+        }
+    }
+
+    /**
+     * Prepare formatted function array.
+     *
+     * @param array $functions
+     *
+     * @return array
+     */
+    protected function prepareFunctions(array $functions)
+    {
+        natcasesort($functions);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($functions as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_FUNCTION,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/GlobalVariableEnumerator.php

@@ -0,0 +1,92 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Global Variable Enumerator class.
+ */
+class GlobalVariableEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list globals when no Reflector is present.
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list globals if we are specifically asked
+        if (!$input->getOption('globals')) {
+            return;
+        }
+
+        $globals = $this->prepareGlobals($this->getGlobals());
+
+        if (empty($globals)) {
+            return;
+        }
+
+        return array(
+            'Global Variables' => $globals,
+        );
+    }
+
+    /**
+     * Get defined global variables.
+     *
+     * @return array
+     */
+    protected function getGlobals()
+    {
+        global $GLOBALS;
+
+        $names = array_keys($GLOBALS);
+        natcasesort($names);
+
+        $ret = array();
+        foreach ($names as $name) {
+            $ret[$name] = $GLOBALS[$name];
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Prepare formatted global variable array.
+     *
+     * @param array $globals
+     *
+     * @return array
+     */
+    protected function prepareGlobals($globals)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($globals as $name => $value) {
+            if ($this->showItem($name)) {
+                $fname = '$' . $name;
+                $ret[$fname] = array(
+                    'name'  => $fname,
+                    'style' => self::IS_GLOBAL,
+                    'value' => $this->presentRef($value),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/InterfaceEnumerator.php

@@ -0,0 +1,80 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Interface Enumerator class.
+ */
+class InterfaceEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list interfaces when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --interfaces Foo
+        //
+        // ... for listing interfaces in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list interfaces if we are specifically asked
+        if (!$input->getOption('interfaces')) {
+            return;
+        }
+
+        $interfaces = $this->prepareInterfaces(get_declared_interfaces());
+
+        if (empty($interfaces)) {
+            return;
+        }
+
+        return array(
+            'Interfaces' => $interfaces,
+        );
+    }
+
+    /**
+     * Prepare formatted interface array.
+     *
+     * @param array $interfaces
+     *
+     * @return array
+     */
+    protected function prepareInterfaces(array $interfaces)
+    {
+        natcasesort($interfaces);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($interfaces as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CLASS,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/MethodEnumerator.php

@@ -0,0 +1,138 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Method Enumerator class.
+ */
+class MethodEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list methods when a Reflector is present.
+
+        if ($reflector === null) {
+            return;
+        }
+
+        // We can only list methods on actual class (or object) reflectors.
+        if (!$reflector instanceof \ReflectionClass) {
+            return;
+        }
+
+        // only list methods if we are specifically asked
+        if (!$input->getOption('methods')) {
+            return;
+        }
+
+        $showAll = $input->getOption('all');
+        $methods = $this->prepareMethods($this->getMethods($showAll, $reflector));
+
+        if (empty($methods)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$this->getKindLabel($reflector)] = $methods;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined methods for the given class or object Reflector.
+     *
+     * @param boolean    $showAll   Include private and protected methods.
+     * @param \Reflector $reflector
+     *
+     * @return array
+     */
+    protected function getMethods($showAll, \Reflector $reflector)
+    {
+        $methods = array();
+        foreach ($reflector->getMethods() as $name => $method) {
+            if ($showAll || $method->isPublic()) {
+                $methods[$method->getName()] = $method;
+            }
+        }
+
+        // TODO: this should be natcasesort
+        ksort($methods);
+
+        return $methods;
+    }
+
+    /**
+     * Prepare formatted method array.
+     *
+     * @param array $methods
+     *
+     * @return array
+     */
+    protected function prepareMethods(array $methods)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($methods as $name => $method) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => $this->getVisibilityStyle($method),
+                    'value' => $this->presentSignature($method),
+                );
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Get a label for the particular kind of "class" represented.
+     *
+     * @param \ReflectionClass $reflector
+     *
+     * @return string
+     */
+    protected function getKindLabel(\ReflectionClass $reflector)
+    {
+        if ($reflector->isInterface()) {
+            return 'Interface Methods';
+        } elseif (method_exists($reflector, 'isTrait') && $reflector->isTrait()) {
+            return 'Trait Methods';
+        } else {
+            return 'Class Methods';
+        }
+    }
+
+    /**
+     * Get output style for the given method's visibility.
+     *
+     * @param \ReflectionMethod $method
+     *
+     * @return string
+     */
+    private function getVisibilityStyle(\ReflectionMethod $method)
+    {
+        if ($method->isPublic()) {
+            return self::IS_PUBLIC;
+        } elseif ($method->isProtected()) {
+            return self::IS_PROTECTED;
+        } else {
+            return self::IS_PRIVATE;
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/PropertyEnumerator.php

@@ -0,0 +1,161 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Property Enumerator class.
+ */
+class PropertyEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list properties when a Reflector is present.
+
+        if ($reflector === null) {
+            return;
+        }
+
+        // We can only list properties on actual class (or object) reflectors.
+        if (!$reflector instanceof \ReflectionClass) {
+            return;
+        }
+
+        // only list properties if we are specifically asked
+        if (!$input->getOption('properties')) {
+            return;
+        }
+
+        $showAll    = $input->getOption('all');
+        $properties = $this->prepareProperties($this->getProperties($showAll, $reflector), $target);
+
+        if (empty($properties)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$this->getKindLabel($reflector)] = $properties;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined properties for the given class or object Reflector.
+     *
+     * @param boolean    $showAll   Include private and protected properties.
+     * @param \Reflector $reflector
+     *
+     * @return array
+     */
+    protected function getProperties($showAll, \Reflector $reflector)
+    {
+        $properties = array();
+        foreach ($reflector->getProperties() as $property) {
+            if ($showAll || $property->isPublic()) {
+                $properties[$property->getName()] = $property;
+            }
+        }
+
+        // TODO: this should be natcasesort
+        ksort($properties);
+
+        return $properties;
+    }
+
+    /**
+     * Prepare formatted property array.
+     *
+     * @param array $properties
+     *
+     * @return array
+     */
+    protected function prepareProperties(array $properties, $target = null)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($properties as $name => $property) {
+            if ($this->showItem($name)) {
+                $fname = '$' . $name;
+                $ret[$fname] = array(
+                    'name'  => $fname,
+                    'style' => $this->getVisibilityStyle($property),
+                    'value' => $this->presentValue($property, $target),
+                );
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Get a label for the particular kind of "class" represented.
+     *
+     * @param \ReflectionClass $reflector
+     *
+     * @return string
+     */
+    protected function getKindLabel(\ReflectionClass $reflector)
+    {
+        if ($reflector->isInterface()) {
+            return 'Interface Properties';
+        } elseif (method_exists($reflector, 'isTrait') && $reflector->isTrait()) {
+            return 'Trait Properties';
+        } else {
+            return 'Class Properties';
+        }
+    }
+
+    /**
+     * Get output style for the given property's visibility.
+     *
+     * @param \ReflectionProperty $property
+     *
+     * @return string
+     */
+    private function getVisibilityStyle(\ReflectionProperty $property)
+    {
+        if ($property->isPublic()) {
+            return self::IS_PUBLIC;
+        } elseif ($property->isProtected()) {
+            return self::IS_PROTECTED;
+        } else {
+            return self::IS_PRIVATE;
+        }
+    }
+
+    /**
+     * Present the $target's current value for a reflection property.
+     *
+     * @param \ReflectionProperty $property
+     * @param mixed               $target
+     *
+     * @return string
+     */
+    protected function presentValue(\ReflectionProperty $property, $target)
+    {
+        if (!is_object($target)) {
+            // TODO: figure out if there's a way to return defaults when target
+            // is a class/interface/trait rather than an object.
+            return '';
+        }
+
+        $property->setAccessible(true);
+        $value = $property->getValue($target);
+
+        return $this->presentRef($value);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/TraitEnumerator.php

@@ -0,0 +1,85 @@
+<?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\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Trait Enumerator class.
+ */
+class TraitEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // bail early if current PHP doesn't know about traits.
+        if (!function_exists('trait_exists')) {
+            return;
+        }
+
+        // only list traits when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --traits Foo
+        //
+        // ... for listing traits in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list traits if we are specifically asked
+        if (!$input->getOption('traits')) {
+            return;
+        }
+
+        $traits = $this->prepareTraits(get_declared_traits());
+
+        if (empty($traits)) {
+            return;
+        }
+
+        return array(
+            'Traits' => $traits,
+        );
+    }
+
+    /**
+     * Prepare formatted trait array.
+     *
+     * @param array $traits
+     *
+     * @return array
+     */
+    protected function prepareTraits(array $traits)
+    {
+        natcasesort($traits);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($traits as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CLASS,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/VariableEnumerator.php

@@ -0,0 +1,129 @@
+<?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\Command\ListCommand;
+
+use Psy\Context;
+use Psy\Presenter\PresenterManager;
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Variable Enumerator class.
+ */
+class VariableEnumerator extends Enumerator
+{
+    private static $specialVars = array('_', '_e');
+    private $context;
+
+    /**
+     * Variable Enumerator constructor.
+     *
+     * Unlike most other enumerators, the Variable Enumerator needs access to
+     * the current scope variables, so we need to pass it a Context instance.
+     *
+     * @param PresenterManager $presenterManager
+     * @param Context          $context
+     */
+    public function __construct(PresenterManager $presenterManager, Context $context)
+    {
+        $this->context = $context;
+        parent::__construct($presenterManager);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list variables when no Reflector is present.
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list variables if we are specifically asked
+        if (!$input->getOption('vars')) {
+            return;
+        }
+
+        $showAll   = $input->getOption('all');
+        $variables = $this->prepareVariables($this->getVariables($showAll));
+
+        if (empty($variables)) {
+            return;
+        }
+
+        return array(
+            'Variables' => $variables,
+        );
+    }
+
+    /**
+     * Get scope variables.
+     *
+     * @param boolean $showAll Include special variables (e.g. $_).
+     *
+     * @return array
+     */
+    protected function getVariables($showAll)
+    {
+        $scopeVars = $this->context->getAll();
+        uksort($scopeVars, function ($a, $b) {
+            if ($a === '_e') {
+                return 1;
+            } elseif ($b === '_e') {
+                return -1;
+            } elseif ($a === '_') {
+                return 1;
+            } elseif ($b === '_') {
+                return -1;
+            } else {
+                // TODO: this should be natcasesort
+                return strcasecmp($a, $b);
+            }
+        });
+
+        $ret = array();
+        foreach ($scopeVars as $name => $val) {
+            if (!$showAll && in_array($name, self::$specialVars)) {
+                continue;
+            }
+
+            $ret[$name] = $val;
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Prepare formatted variable array.
+     *
+     * @param array $variables
+     *
+     * @return array
+     */
+    protected function prepareVariables(array $variables)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+        foreach ($variables as $name => $val) {
+            if ($this->showItem($name)) {
+                $fname = '$' . $name;
+                $ret[$fname] = array(
+                    'name'  => $fname,
+                    'style' => in_array($name, self::$specialVars) ? self::IS_PRIVATE : self::IS_PUBLIC,
+                    'value' => $this->presentRef($val), // TODO: add types to variable signatures
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ParseCommand.php

@@ -0,0 +1,125 @@
+<?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\Command;
+
+use PhpParser\Lexer;
+use PhpParser\Parser;
+use Psy\Presenter\PHPParserPresenter;
+use Psy\Presenter\PresenterManager;
+use Psy\Presenter\PresenterManagerAware;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Parse PHP code and show the abstract syntax tree.
+ */
+class ParseCommand extends Command implements PresenterManagerAware
+{
+    private $presenterManager;
+    private $parser;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->presenterManager = new PresenterManager();
+
+        foreach ($manager as $presenter) {
+            $this->presenterManager->addPresenter($presenter);
+        }
+
+        $this->presenterManager->addPresenter(new PHPParserPresenter());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('parse')
+            ->setDefinition(array(
+                new InputArgument('code', InputArgument::REQUIRED, 'PHP code to parse.'),
+                new InputOption('depth', '', InputOption::VALUE_REQUIRED, 'Depth to parse', 10),
+            ))
+            ->setDescription('Parse PHP code and show the abstract syntax tree.')
+            ->setHelp(
+                <<<HELP
+Parse PHP code and show the abstract syntax tree.
+
+This command is used in the development of PsySH. Given a string of PHP code,
+it pretty-prints the PHP Parser parse tree.
+
+See https://github.com/nikic/PHP-Parser
+
+It prolly won't be super useful for most of you, but it's here if you want to play.
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $code = $input->getArgument('code');
+        if (strpos('<?', $code) === false) {
+            $code = '<?php ' . $code;
+        }
+
+        $depth = $input->getOption('depth');
+        $nodes = $this->parse($code);
+        $output->page($this->presenterManager->present($nodes, $depth));
+    }
+
+    /**
+     * Lex and parse a string of code into statements.
+     *
+     * @param string $code
+     *
+     * @return array Statements
+     */
+    private function parse($code)
+    {
+        $parser = $this->getParser();
+
+        try {
+            return $parser->parse($code);
+        } catch (\PhpParser\Error $e) {
+            if (strpos($e->getMessage(), 'unexpected EOF') === false) {
+                throw $e;
+            }
+
+            // If we got an unexpected EOF, let's try it again with a semicolon.
+            return $parser->parse($code . ';');
+        }
+    }
+
+    /**
+     * Get (or create) the Parser instance.
+     *
+     * @return Parser
+     */
+    private function getParser()
+    {
+        if (!isset($this->parser)) {
+            $this->parser = new Parser(new Lexer());
+        }
+
+        return $this->parser;
+    }
+}

vendor/psy/psysh/src/Psy/Command/PsyVersionCommand.php

@@ -0,0 +1,41 @@
+<?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\Command;
+
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * A dumb little command for printing out the current Psy Shell version.
+ */
+class PsyVersionCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('version')
+            ->setDefinition(array())
+            ->setDescription('Show Psy Shell version.')
+            ->setHelp('Show Psy Shell version.');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->writeln($this->getApplication()->getVersion());
+    }
+}

vendor/psy/psysh/src/Psy/Command/ReflectingCommand.php

@@ -0,0 +1,172 @@
+<?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\Command;
+
+use Psy\Context;
+use Psy\ContextAware;
+use Psy\Exception\RuntimeException;
+use Psy\Util\Mirror;
+
+/**
+ * An abstract command with helpers for inspecting the current context.
+ */
+abstract class ReflectingCommand extends Command implements ContextAware
+{
+    const CLASS_OR_FUNC   = '/^[\\\\\w]+$/';
+    const INSTANCE        = '/^\$(\w+)$/';
+    const CLASS_MEMBER    = '/^([\\\\\w]+)::(\w+)$/';
+    const CLASS_STATIC    = '/^([\\\\\w]+)::\$(\w+)$/';
+    const INSTANCE_MEMBER = '/^\$(\w+)(::|->)(\w+)$/';
+    const INSTANCE_STATIC = '/^\$(\w+)::\$(\w+)$/';
+
+    /**
+     * Context instance (for ContextAware interface).
+     *
+     * @var Context
+     */
+    protected $context;
+
+    /**
+     * ContextAware interface.
+     *
+     * @param Context $context
+     */
+    public function setContext(Context $context)
+    {
+        $this->context = $context;
+    }
+
+    /**
+     * Get the target for a value.
+     *
+     * @throws \InvalidArgumentException when the value specified can't be resolved.
+     *
+     * @param string  $valueName Function, class, variable, constant, method or property name.
+     * @param boolean $classOnly True if the name should only refer to a class, function or instance
+     *
+     * @return array (class or instance name, member name, kind)
+     */
+    protected function getTarget($valueName, $classOnly = false)
+    {
+        $valueName = trim($valueName);
+        $matches   = array();
+        switch (true) {
+            case preg_match(self::CLASS_OR_FUNC, $valueName, $matches):
+                return array($this->resolveName($matches[0], true), null, 0);
+
+            case preg_match(self::INSTANCE, $valueName, $matches):
+                return array($this->resolveInstance($matches[1]), null, 0);
+
+            case (!$classOnly && preg_match(self::CLASS_MEMBER, $valueName, $matches)):
+                return array($this->resolveName($matches[1]), $matches[2], Mirror::CONSTANT | Mirror::METHOD);
+
+            case (!$classOnly && preg_match(self::CLASS_STATIC, $valueName, $matches)):
+                return array($this->resolveName($matches[1]), $matches[2], Mirror::STATIC_PROPERTY | Mirror::PROPERTY);
+
+            case (!$classOnly && preg_match(self::INSTANCE_MEMBER, $valueName, $matches)):
+                if ($matches[2] === '->') {
+                    $kind = Mirror::METHOD | Mirror::PROPERTY;
+                } else {
+                    $kind = Mirror::CONSTANT | Mirror::METHOD;
+                }
+
+                return array($this->resolveInstance($matches[1]), $matches[3], $kind);
+
+            case (!$classOnly && preg_match(self::INSTANCE_STATIC, $valueName, $matches)):
+                return array($this->resolveInstance($matches[1]), $matches[2], Mirror::STATIC_PROPERTY);
+
+            default:
+                throw new RuntimeException('Unknown target: ' . $valueName);
+        }
+    }
+
+    /**
+     * Resolve a class or function name (with the current shell namespace).
+     *
+     * @param string $name
+     * @param bool   $includeFunctions (default: false)
+     *
+     * @return string
+     */
+    protected function resolveName($name, $includeFunctions = false)
+    {
+        if (substr($name, 0, 1) === '\\') {
+            return $name;
+        }
+
+        if ($namespace = $this->getApplication()->getNamespace()) {
+            $fullName = $namespace . '\\' . $name;
+
+            if (class_exists($fullName) || interface_exists($fullName) || ($includeFunctions && function_exists($fullName))) {
+                return $fullName;
+            }
+        }
+
+        return $name;
+    }
+
+    /**
+     * Get a Reflector and documentation for a function, class or instance, constant, method or property.
+     *
+     * @param string  $valueName Function, class, variable, constant, method or property name.
+     * @param boolean $classOnly True if the name should only refer to a class, function or instance
+     *
+     * @return array (value, Reflector)
+     */
+    protected function getTargetAndReflector($valueName, $classOnly = false)
+    {
+        list($value, $member, $kind) = $this->getTarget($valueName, $classOnly);
+
+        return array($value, Mirror::get($value, $member, $kind));
+    }
+
+    /**
+     * Return a variable instance from the current scope.
+     *
+     * @throws \InvalidArgumentException when the requested variable does not exist in the current scope.
+     *
+     * @param string $name
+     *
+     * @return mixed Variable instance.
+     */
+    protected function resolveInstance($name)
+    {
+        $value = $this->getScopeVariable($name);
+        if (!is_object($value)) {
+            throw new RuntimeException('Unable to inspect a non-object');
+        }
+
+        return $value;
+    }
+
+    /**
+     * Get a variable from the current shell scope.
+     *
+     * @param string $name
+     *
+     * @return mixed
+     */
+    protected function getScopeVariable($name)
+    {
+        return $this->context->get($name);
+    }
+
+    /**
+     * Get all scope variables from the current shell scope.
+     *
+     * @return array
+     */
+    protected function getScopeVariables()
+    {
+        return $this->context->getAll();
+    }
+}

vendor/psy/psysh/src/Psy/Command/ShowCommand.php

@@ -0,0 +1,63 @@
+<?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\Command;
+
+use Psy\Exception\RuntimeException;
+use Psy\Formatter\CodeFormatter;
+use Psy\Formatter\SignatureFormatter;
+use Psy\Output\ShellOutput;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Show the code for an object, class, constant, method or property.
+ */
+class ShowCommand extends ReflectingCommand
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('show')
+            ->setDefinition(array(
+                new InputArgument('value', InputArgument::REQUIRED, 'Function, class, instance, constant, method or property to show.'),
+            ))
+            ->setDescription('Show the code for an object, class, constant, method or property.')
+            ->setHelp(
+                <<<HELP
+Show the code for an object, class, constant, method or property.
+
+e.g.
+<return>>>> show \$myObject</return>
+<return>>>> show Psy\Shell::debug</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        list($value, $reflector) = $this->getTargetAndReflector($input->getArgument('value'));
+
+        try {
+            $output->page(CodeFormatter::format($reflector), ShellOutput::OUTPUT_RAW);
+        } catch (RuntimeException $e) {
+            $output->writeln(SignatureFormatter::format($reflector));
+            throw $e;
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ThrowUpCommand.php

@@ -0,0 +1,87 @@
+<?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\Command;
+
+use Psy\Context;
+use Psy\ContextAware;
+use Psy\Exception\ThrowUpException;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Throw an exception out of the Psy Shell.
+ */
+class ThrowUpCommand extends Command implements ContextAware
+{
+    /**
+     * Context instance (for ContextAware interface).
+     *
+     * @var Context
+     */
+    protected $context;
+
+    /**
+     * ContextAware interface.
+     *
+     * @param Context $context
+     */
+    public function setContext(Context $context)
+    {
+        $this->context = $context;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('throw-up')
+            ->setDefinition(array(
+                new InputArgument('exception', InputArgument::OPTIONAL, 'Exception to throw'),
+            ))
+            ->setDescription('Throw an exception out of the Psy Shell.')
+            ->setHelp(
+                <<<HELP
+Throws an exception out of the current the Psy Shell instance.
+
+By default it throws the most recent exception.
+
+e.g.
+<return>>>> throw-up</return>
+<return>>>> throw-up \$e</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws InvalidArgumentException if there is no exception to throw.
+     * @throws ThrowUpException         because what else do you expect it to do?
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        if ($name = $input->getArgument('exception')) {
+            $orig = $this->context->get(preg_replace('/^\$/', '', $name));
+        } else {
+            $orig = $this->context->getLastException();
+        }
+
+        if (!$orig instanceof \Exception) {
+            throw new \InvalidArgumentException('throw-up can only throw Exceptions');
+        }
+
+        throw new ThrowUpException($orig);
+    }
+}

vendor/psy/psysh/src/Psy/Command/TraceCommand.php

@@ -0,0 +1,137 @@
+<?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\Command;
+
+use Psy\Output\ShellOutput;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Show the current stack trace.
+ */
+class TraceCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('trace')
+            ->setDefinition(array(
+                new InputOption('include-psy', 'p', InputOption::VALUE_NONE,     'Include Psy in the call stack.'),
+                new InputOption('num',         'n', InputOption::VALUE_REQUIRED, 'Only include NUM lines.'),
+            ))
+            ->setDescription('Show the current call stack.')
+            ->setHelp(
+                <<<HELP
+Show the current call stack.
+
+Optionally, include PsySH in the call stack by passing the <info>--include-psy</info> option.
+
+e.g.
+<return>> trace -n10</return>
+<return>> trace --include-psy</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $trace = $this->getBacktrace(new \Exception(), $input->getOption('num'), $input->getOption('include-psy'));
+        $output->page($trace, ShellOutput::NUMBER_LINES | ShellOutput::OUTPUT_RAW);
+    }
+
+    /**
+     * Get a backtrace for an exception.
+     *
+     * Optionally limit the number of rows to include with $count, and exclude
+     * Psy from the trace.
+     *
+     * @param \Exception $e          The exception with a backtrace.
+     * @param int        $count      (default: PHP_INT_MAX)
+     * @param bool       $includePsy (default: true)
+     *
+     * @return array Formatted stacktrace lines.
+     */
+    protected function getBacktrace(\Exception $e, $count = null, $includePsy = true)
+    {
+        if ($cwd = getcwd()) {
+            $cwd = rtrim($cwd, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
+        }
+
+        if ($count === null) {
+            $count = PHP_INT_MAX;
+        }
+
+        $lines = array();
+
+        $trace = $e->getTrace();
+        array_unshift($trace, array(
+            'function' => '',
+            'file'     => $e->getFile() !== null ? $e->getFile() : 'n/a',
+            'line'     => $e->getLine() !== null ? $e->getLine() : 'n/a',
+            'args'     => array(),
+        ));
+
+        if (!$includePsy) {
+            for ($i = count($trace) - 1; $i >= 0; $i--) {
+                $thing = isset($trace[$i]['class']) ? $trace[$i]['class'] : $trace[$i]['function'];
+                if (preg_match('/\\\\?Psy\\\\/', $thing)) {
+                    $trace = array_slice($trace, $i + 1);
+                    break;
+                }
+            }
+        }
+
+        for ($i = 0, $count = min($count, count($trace)); $i < $count; $i++) {
+            $class    = isset($trace[$i]['class']) ? $trace[$i]['class'] : '';
+            $type     = isset($trace[$i]['type']) ? $trace[$i]['type'] : '';
+            $function = $trace[$i]['function'];
+            $file     = isset($trace[$i]['file']) ? $this->replaceCwd($cwd, $trace[$i]['file']) : 'n/a';
+            $line     = isset($trace[$i]['line']) ? $trace[$i]['line'] : 'n/a';
+
+            $lines[] = sprintf(
+                ' %s%s%s() at <info>%s:%s</info>',
+                OutputFormatter::escape($class),
+                OutputFormatter::escape($type),
+                OutputFormatter::escape($function),
+                OutputFormatter::escape($file),
+                OutputFormatter::escape($line)
+            );
+        }
+
+        return $lines;
+    }
+
+    /**
+     * Replace the given directory from the start of a filepath.
+     *
+     * @param string $cwd
+     * @param string $file
+     *
+     * @return string
+     */
+    private function replaceCwd($cwd, $file)
+    {
+        if ($cwd === false) {
+            return $file;
+        } else {
+            return preg_replace('/^' . preg_quote($cwd, '/') . '/', '', $file);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/WhereamiCommand.php

@@ -0,0 +1,115 @@
+<?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\Command;
+
+use JakubOnderka\PhpConsoleColor\ConsoleColor;
+use JakubOnderka\PhpConsoleHighlighter\Highlighter;
+use Psy\Output\ShellOutput;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Show the context of where you opened the debugger.
+ */
+class WhereamiCommand extends Command
+{
+    public function __construct()
+    {
+        if (version_compare(PHP_VERSION, '5.3.6', '>=')) {
+            $this->backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+        } else {
+            $this->backtrace = debug_backtrace();
+        }
+
+        return parent::__construct();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('whereami')
+            ->setDefinition(array(
+                new InputOption('num', 'n', InputOption::VALUE_OPTIONAL, 'Number of lines before and after.', '5'),
+            ))
+            ->setDescription('Show where you are in the code.')
+            ->setHelp(
+                <<<HELP
+Show where you are in the code.
+
+Optionally, include how many lines before and after you want to display.
+
+e.g.
+<return>> whereami </return>
+<return>> whereami -n10</return>
+HELP
+            );
+    }
+
+    /**
+     * Obtains the correct trace in the full backtrace.
+     *
+     * @return array
+     */
+    protected function trace()
+    {
+        foreach ($this->backtrace as $i => $backtrace) {
+            if (!isset($backtrace['class'], $backtrace['function'])) {
+                continue;
+            }
+            $correctClass = $backtrace['class'] === 'Psy\Shell';
+            $correctFunction = $backtrace['function'] === 'debug';
+            if ($correctClass && $correctFunction) {
+                return $backtrace;
+            }
+        }
+
+        return end($this->backtrace);
+    }
+
+    /**
+     * Determine the file and line based on the specific backtrace.
+     *
+     * @return array
+     */
+    protected function fileInfo()
+    {
+        $backtrace = $this->trace();
+        if (preg_match('/eval\(/', $backtrace['file'])) {
+            preg_match_all('/([^\(]+)\((\d+)/', $backtrace['file'], $matches);
+            $file = $matches[1][0];
+            $line = (int) $matches[2][0];
+        } else {
+            $file = $backtrace['file'];
+            $line = $backtrace['line'];
+        }
+
+        return compact('file', 'line');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $info = $this->fileInfo();
+        $num = $input->getOption('num');
+        $colors = new ConsoleColor();
+        $colors->addTheme('line_number', array('blue'));
+        $highlighter = new Highlighter($colors);
+        $contents = file_get_contents($info['file']);
+        $output->page($highlighter->getCodeSnippet($contents, $info['line'], $num, $num), ShellOutput::OUTPUT_RAW);
+    }
+}

vendor/psy/psysh/src/Psy/Command/WtfCommand.php

@@ -0,0 +1,111 @@
+<?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\Command;
+
+use Psy\Context;
+use Psy\ContextAware;
+use Psy\Output\ShellOutput;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Show the last uncaught exception.
+ */
+class WtfCommand extends TraceCommand implements ContextAware
+{
+    /**
+     * Context instance (for ContextAware interface).
+     *
+     * @var Context
+     */
+    protected $context;
+
+    /**
+     * ContextAware interface.
+     *
+     * @param Context $context
+     */
+    public function setContext(Context $context)
+    {
+        $this->context = $context;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('wtf')
+            ->setAliases(array('last-exception', 'wtf?'))
+            ->setDefinition(array(
+                new InputArgument('incredulity', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, 'Number of lines to show'),
+                new InputOption('verbose', 'v',  InputOption::VALUE_NONE, 'Show entire backtrace.'),
+            ))
+            ->setDescription('Show the backtrace of the most recent exception.')
+            ->setHelp(
+                <<<HELP
+Shows a few lines of the backtrace of the most recent exception.
+
+If you want to see more lines, add more question marks or exclamation marks:
+
+e.g.
+<return>>>> wtf ?</return>
+<return>>>> wtf ?!???!?!?</return>
+
+To see the entire backtrace, pass the -v/--verbose flag:
+
+e.g.
+<return>>>> wtf -v</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * --verbose is not hidden for this option :)
+     *
+     * @return array
+     */
+    protected function getHiddenOptions()
+    {
+        $options = parent::getHiddenOptions();
+        unset($options[array_search('verbose', $options)]);
+
+        return $options;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $incredulity = implode('', $input->getArgument('incredulity'));
+        if (strlen(preg_replace('/[\\?!]/', '', $incredulity))) {
+            throw new \InvalidArgumentException('Incredulity must include only "?" and "!".');
+        }
+
+        $exception = $this->context->getLastException();
+        $count     = $input->getOption('verbose') ? PHP_INT_MAX : pow(2, max(0, (strlen($incredulity) - 1)));
+        $trace     = $this->getBacktrace($exception, $count);
+
+        $shell = $this->getApplication();
+        $output->page(function ($output) use ($exception, $trace, $shell) {
+            $shell->renderException($exception, $output);
+            $output->writeln('--');
+            $output->write($trace, true, ShellOutput::NUMBER_LINES);
+        });
+    }
+}

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

@@ -0,0 +1,162 @@
+<?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;
+
+use Symfony\Component\Finder\Finder;
+
+/**
+ * A Psy Shell Phar compiler.
+ */
+class Compiler
+{
+    /**
+     * Compiles psysh into a single phar file.
+     *
+     * @param string $pharFile The full path to the file to create
+     */
+    public function compile($pharFile = 'psysh.phar')
+    {
+        if (file_exists($pharFile)) {
+            unlink($pharFile);
+        }
+
+        $this->version = Shell::VERSION;
+
+        $phar = new \Phar($pharFile, 0, 'psysh.phar');
+        $phar->setSignatureAlgorithm(\Phar::SHA1);
+
+        $phar->startBuffering();
+
+        $finder = Finder::create()
+            ->files()
+            ->ignoreVCS(true)
+            ->name('*.php')
+            ->notName('Compiler.php')
+            ->notName('Autoloader.php')
+            ->in(__DIR__ . '/..');
+
+        foreach ($finder as $file) {
+            $this->addFile($phar, $file);
+        }
+
+        $finder = Finder::create()
+            ->files()
+            ->ignoreVCS(true)
+            ->name('*.php')
+            ->exclude('Tests')
+            ->in(__DIR__ . '/../../vendor/dnoegel/php-xdg-base-dir/src')
+            ->in(__DIR__ . '/../../vendor/jakub-onderka/php-console-color')
+            ->in(__DIR__ . '/../../vendor/jakub-onderka/php-console-highlighter')
+            ->in(__DIR__ . '/../../vendor/nikic/php-parser/lib')
+            ->in(__DIR__ . '/../../vendor/symfony/console')
+            ->in(__DIR__ . '/../../vendor/symfony/yaml');
+
+        foreach ($finder as $file) {
+            $this->addFile($phar, $file);
+        }
+
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/autoload.php'));
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/composer/include_paths.php'));
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/composer/autoload_files.php'));
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/composer/autoload_psr4.php'));
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/composer/autoload_real.php'));
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/composer/autoload_namespaces.php'));
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/composer/autoload_classmap.php'));
+        $this->addFile($phar, new \SplFileInfo(__DIR__ . '/../../vendor/composer/ClassLoader.php'));
+
+        // Stubs
+        $phar->setStub($this->getStub());
+
+        $phar->stopBuffering();
+
+        // $this->addFile($phar, new \SplFileInfo(__DIR__.'/../../LICENSE'), false);
+
+        unset($phar);
+    }
+
+    /**
+     * Add a file to the psysh Phar.
+     *
+     * @param Phar        $phar
+     * @param SplFileInfo $file
+     * @param bool        $strip (default: true)
+     */
+    private function addFile($phar, $file, $strip = true)
+    {
+        $path = str_replace(dirname(dirname(__DIR__)) . DIRECTORY_SEPARATOR, '', $file->getRealPath());
+
+        $content = file_get_contents($file);
+        if ($strip) {
+            $content = $this->stripWhitespace($content);
+        } elseif ('LICENSE' === basename($file)) {
+            $content = "\n" . $content . "\n";
+        }
+
+        $phar->addFromString($path, $content);
+    }
+
+    /**
+     * Removes whitespace from a PHP source string while preserving line numbers.
+     *
+     * @param string $source A PHP string
+     *
+     * @return string The PHP string with the whitespace removed
+     */
+    private function stripWhitespace($source)
+    {
+        if (!function_exists('token_get_all')) {
+            return $source;
+        }
+
+        $output = '';
+        foreach (token_get_all($source) as $token) {
+            if (is_string($token)) {
+                $output .= $token;
+            } elseif (in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
+                $output .= str_repeat("\n", substr_count($token[1], "\n"));
+            } elseif (T_WHITESPACE === $token[0]) {
+                // reduce wide spaces
+                $whitespace = preg_replace('{[ \t]+}', ' ', $token[1]);
+                // normalize newlines to \n
+                $whitespace = preg_replace('{(?:\r\n|\r|\n)}', "\n", $whitespace);
+                // trim leading spaces
+                $whitespace = preg_replace('{\n +}', "\n", $whitespace);
+                $output .= $whitespace;
+            } else {
+                $output .= $token[1];
+            }
+        }
+
+        return $output;
+    }
+
+    /**
+     * Get a Phar stub for psysh.
+     *
+     * This is basically the psysh bin, with the autoload require statements swapped out.
+     *
+     * @return string
+     */
+    private function getStub()
+    {
+        $autoload = <<<'EOS'
+Phar::mapPhar('psysh.phar');
+require 'phar://psysh.phar/vendor/autoload.php';
+EOS;
+
+        $content = file_get_contents(__DIR__ . '/../../bin/psysh');
+        $content = preg_replace('{/\* <<<.*?>>> \*/}sm', $autoload, $content);
+        $content .= "__HALT_COMPILER();";
+
+        return $content;
+    }
+}

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

@@ -0,0 +1,136 @@
+<?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;
+    }
+}

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

@@ -0,0 +1,28 @@
+<?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;
+
+/**
+ * ContextAware interface.
+ *
+ * This interface is used to pass the Shell's context into commands and such
+ * which require access to the current scope variables.
+ */
+interface ContextAware
+{
+    /**
+     * Set the Context reference.
+     *
+     * @param Context $context
+     */
+    public function setContext(Context $context);
+}

vendor/psy/psysh/src/Psy/Exception/BreakException.php

@@ -0,0 +1,39 @@
+<?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\Exception;
+
+/**
+ * A break exception, used for halting the Psy Shell.
+ */
+class BreakException extends \Exception implements Exception
+{
+    private $rawMessage;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct($message = "", $code = 0, \Exception $previous = null)
+    {
+        $this->rawMessage = $message;
+        parent::__construct(sprintf('Exit:  %s', $message), $code, $previous);
+    }
+
+    /**
+     * Return a raw (unformatted) version of the error message.
+     *
+     * @return string
+     */
+    public function getRawMessage()
+    {
+        return $this->rawMessage;
+    }
+}

vendor/psy/psysh/src/Psy/Exception/ErrorException.php

@@ -0,0 +1,88 @@
+<?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\Exception;
+
+/**
+ * A custom error Exception for Psy with a formatted $message.
+ */
+class ErrorException extends \ErrorException implements Exception
+{
+    private $rawMessage;
+
+    /**
+     * Construct a Psy ErrorException.
+     *
+     * @param string    $message  (default: "")
+     * @param int       $code     (default: 0)
+     * @param int       $severity (default: 1)
+     * @param string    $filename (default: null)
+     * @param int       $lineno   (default: null)
+     * @param Exception $previous (default: null)
+     */
+    public function __construct($message = "", $code = 0, $severity = 1, $filename = null, $lineno = null, $previous = null)
+    {
+        $this->rawMessage = $message;
+
+        if (!empty($filename) && preg_match('{Psy[/\\\\]ExecutionLoop}', $filename)) {
+            $filename = null;
+        }
+
+        switch ($severity) {
+            case E_WARNING:
+            case E_CORE_WARNING:
+            case E_COMPILE_WARNING:
+            case E_USER_WARNING:
+                $type = 'warning';
+                break;
+
+            case E_STRICT:
+                $type = 'Strict error';
+                break;
+
+            default:
+                $type = 'error';
+                break;
+        }
+
+        $message = sprintf('PHP %s:  %s%s on line %d', $type, $message, $filename ? ' in ' . $filename : '', $lineno);
+        parent::__construct($message, $code, $severity, $filename, $lineno, $previous);
+    }
+
+    /**
+     * Get the raw (unformatted) message for this error.
+     *
+     * @return string
+     */
+    public function getRawMessage()
+    {
+        return $this->rawMessage;
+    }
+
+    /**
+     * Helper for throwing an ErrorException.
+     *
+     * This allows us to:
+     *
+     *     set_error_handler(array('Psy\Exception\ErrorException', 'throwException'));
+     *
+     * @throws ErrorException
+     *
+     * @param int    $errno   Error type
+     * @param string $errstr  Message
+     * @param string $errfile Filename
+     * @param int    $errline Line number
+     */
+    public static function throwException($errno, $errstr, $errfile, $errline)
+    {
+        throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
+    }
+}

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

@@ -0,0 +1,27 @@
+<?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\Exception;
+
+/**
+ * An interface for Psy Exceptions.
+ */
+interface Exception
+{
+    /**
+     * This is the only thing, really...
+     *
+     * Return a raw (unformatted) version of the message.
+     *
+     * @return string
+     */
+    public function getRawMessage();
+}

vendor/psy/psysh/src/Psy/Exception/FatalErrorException.php

@@ -0,0 +1,47 @@
+<?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\Exception;
+
+/**
+ * A "fatal error" Exception for Psy.
+ */
+class FatalErrorException extends \ErrorException implements Exception
+{
+    private $rawMessage;
+
+    /**
+     * Create a fatal error.
+     *
+     * @param string     $message  (default: "")
+     * @param int        $code     (default: 0)
+     * @param int        $severity (default: 9000)
+     * @param string     $filename (default: null)
+     * @param int        $lineno   (default: null)
+     * @param \Exception $previous (default: null)
+     */
+    public function __construct($message = "", $code = 0, $severity = 9000, $filename = null, $lineno = null, $previous = null)
+    {
+        $this->rawMessage = $message;
+        $message = sprintf('PHP Fatal error:  %s in %s on line %d', $message, $filename ?: "eval()'d code", $lineno);
+        parent::__construct($message, $code, $severity, $filename, $lineno, $previous);
+    }
+
+    /**
+     * Return a raw (unformatted) version of the error message.
+     *
+     * @return string
+     */
+    public function getRawMessage()
+    {
+        return $this->rawMessage;
+    }
+}

vendor/psy/psysh/src/Psy/Exception/ParseErrorException.php

@@ -0,0 +1,42 @@
+<?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\Exception;
+
+/**
+ * A "parse error" Exception for Psy.
+ */
+class ParseErrorException extends \PhpParser\Error implements Exception
+{
+    /**
+     * Constructor!
+     *
+     * @param string $message (default: "")
+     * @param int    $line    (default: -1)
+     */
+    public function __construct($message = "", $line = -1)
+    {
+        $message = sprintf('PHP Parse error: %s', $message);
+        parent::__construct($message, $line);
+    }
+
+    /**
+     * Create a ParseErrorException from a PhpParser Error.
+     *
+     * @param \PhpParser\Error $e
+     *
+     * @return ParseErrorException
+     */
+    public static function fromParseError(\PhpParser\Error $e)
+    {
+        return new self($e->getRawMessage(), $e->getRawLine());
+    }
+}

vendor/psy/psysh/src/Psy/Exception/RuntimeException.php

@@ -0,0 +1,43 @@
+<?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\Exception;
+
+/**
+ * A RuntimeException for Psy.
+ */
+class RuntimeException extends \RuntimeException implements Exception
+{
+    private $rawMessage;
+
+    /**
+     * Make this bad boy.
+     *
+     * @param string     $message  (default: "")
+     * @param int        $code     (default: 0)
+     * @param \Exception $previous (default: null)
+     */
+    public function __construct($message = "", $code = 0, \Exception $previous = null)
+    {
+        $this->rawMessage = $message;
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * Return a raw (unformatted) version of the error message.
+     *
+     * @return string
+     */
+    public function getRawMessage()
+    {
+        return $this->rawMessage;
+    }
+}

vendor/psy/psysh/src/Psy/Exception/ThrowUpException.php

@@ -0,0 +1,37 @@
+<?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\Exception;
+
+/**
+ * A throw-up exception, used for throwing an exception out of the Psy Shell.
+ */
+class ThrowUpException extends \Exception implements Exception
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct(\Exception $exception)
+    {
+        $message = sprintf("Throwing %s with message '%s'", get_class($exception), $exception->getMessage());
+        parent::__construct($message, $exception->getCode(), $exception);
+    }
+
+    /**
+     * Return a raw (unformatted) version of the error message.
+     *
+     * @return string
+     */
+    public function getRawMessage()
+    {
+        return $this->getPrevious()->getMessage();
+    }
+}

vendor/psy/psysh/src/Psy/ExecutionLoop/ForkingLoop.php

@@ -0,0 +1,163 @@
+<?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\ExecutionLoop;
+
+use Psy\Shell;
+
+/**
+ * A forking version of the Psy Shell execution loop.
+ *
+ * This version is preferred, as it won't die prematurely if user input includes
+ * a fatal error, such as redeclaring a class or function.
+ */
+class ForkingLoop extends Loop
+{
+    private $savegame;
+
+    /**
+     * Run the execution loop.
+     *
+     * Forks into a master and a loop process. The loop process will handle the
+     * evaluation of all instructions, then return its state via a socket upon
+     * completion.
+     *
+     * @param Shell $shell
+     */
+    public function run(Shell $shell)
+    {
+        list($up, $down) = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP);
+
+        if (!$up) {
+            throw new \RuntimeException('Unable to create socket pair.');
+        }
+
+        $pid = pcntl_fork();
+        if ($pid < 0) {
+            throw new \RuntimeException('Unable to start execution loop.');
+        } elseif ($pid > 0) {
+            // This is the main thread. We'll just wait for a while.
+
+            // We won't be needing this one.
+            fclose($up);
+
+            // Wait for a return value from the loop process.
+            $read   = array($down);
+            $write  = null;
+            $except = null;
+            if (stream_select($read, $write, $except, null) === false) {
+                throw new \RuntimeException('Error waiting for execution loop.');
+            }
+
+            $content = stream_get_contents($down);
+            fclose($down);
+
+            if ($content) {
+                $shell->setScopeVariables(@unserialize($content));
+            }
+
+            return;
+        }
+
+        // This is the child process. It's going to do all the work.
+        if (function_exists('setproctitle')) {
+            setproctitle('psysh (loop)');
+        }
+
+        // We won't be needing this one.
+        fclose($down);
+
+        // Let's do some processing.
+        parent::run($shell);
+
+        // Send the scope variables back up to the main thread
+        fwrite($up, $this->serializeReturn($shell->getScopeVariables()));
+        fclose($up);
+
+        exit;
+    }
+
+    /**
+     * Create a savegame at the start of each loop iteration.
+     */
+    public function beforeLoop()
+    {
+        $this->createSavegame();
+    }
+
+    /**
+     * Clean up old savegames at the end of each loop iteration.
+     */
+    public function afterLoop()
+    {
+        // if there's an old savegame hanging around, let's kill it.
+        if (isset($this->savegame)) {
+            posix_kill($this->savegame, SIGKILL);
+            pcntl_signal_dispatch();
+        }
+    }
+
+    /**
+     * Create a savegame fork.
+     *
+     * The savegame contains the current execution state, and can be resumed in
+     * the event that the worker dies unexpectedly (for example, by encountering
+     * a PHP fatal error).
+     */
+    private function createSavegame()
+    {
+        // the current process will become the savegame
+        $this->savegame = posix_getpid();
+
+        $pid = pcntl_fork();
+        if ($pid < 0) {
+            throw new \RuntimeException('Unable to create savegame fork.');
+        } elseif ($pid > 0) {
+            // we're the savegame now... let's wait and see what happens
+            pcntl_waitpid($pid, $status);
+
+            // worker exited cleanly, let's bail
+            if (!pcntl_wexitstatus($status)) {
+                posix_kill(posix_getpid(), SIGKILL);
+            }
+
+            // worker didn't exit cleanly, we'll need to have another go
+            $this->createSavegame();
+        }
+    }
+
+    /**
+     * Serialize all serializable return values.
+     *
+     * A naïve serialization will run into issues if there is a Closure or
+     * SimpleXMLElement (among other things) in scope when exiting the execution
+     * loop. We'll just ignore these unserializable classes, and serialize what
+     * we can.
+     *
+     * @param array $return
+     *
+     * @return string
+     */
+    private function serializeReturn(array $return)
+    {
+        $serializable = array();
+        foreach ($return as $key => $value) {
+            try {
+                serialize($value);
+                $serializable[$key] = $value;
+            } catch (\Exception $e) {
+                // we'll just ignore this one...
+            }
+        }
+
+        return serialize($serializable);
+    }
+}

vendor/psy/psysh/src/Psy/ExecutionLoop/Loop.php

@@ -0,0 +1,168 @@
+<?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\ExecutionLoop;
+
+use Psy\Configuration;
+use Psy\Exception\BreakException;
+use Psy\Exception\ThrowUpException;
+use Psy\Shell;
+
+/**
+ * The Psy Shell execution loop.
+ */
+class Loop
+{
+    /**
+     * Loop constructor.
+     *
+     * The non-forking loop doesn't have much use for Configuration, so we'll
+     * just ignore it.
+     *
+     * @param Configuration $config
+     */
+    public function __construct(Configuration $config)
+    {
+        // don't need this
+    }
+
+    /**
+     * Run the execution loop.
+     *
+     * @throws ThrowUpException if thrown by the `throw-up` command.
+     *
+     * @param Shell $shell
+     */
+    public function run(Shell $shell)
+    {
+        $loop = function ($__psysh__) {
+            // Load user-defined includes
+            set_error_handler(array($__psysh__, 'handleError'));
+            try {
+                foreach ($__psysh__->getIncludes() as $__psysh_include__) {
+                    include $__psysh_include__;
+                }
+            } catch (\Exception $_e) {
+                $__psysh__->writeException($_e);
+            }
+            restore_error_handler();
+            unset($__psysh_include__);
+
+            extract($__psysh__->getScopeVariables());
+
+            do {
+                $__psysh__->beforeLoop();
+                $__psysh__->setScopeVariables(get_defined_vars());
+
+                try {
+                    // read a line, see if we should eval
+                    $__psysh__->getInput();
+
+                    // evaluate the current code buffer
+                    ob_start(
+                        array($__psysh__, 'writeStdout'),
+                        version_compare(PHP_VERSION, '5.4', '>=') ? 1 : 2
+                    );
+
+                    set_error_handler(array($__psysh__, 'handleError'));
+                    $_ = eval($__psysh__->flushCode());
+                    restore_error_handler();
+
+                    ob_end_flush();
+
+                    $__psysh__->writeReturnValue($_);
+                } catch (BreakException $_e) {
+                    restore_error_handler();
+                    if (ob_get_level() > 0) {
+                        ob_end_clean();
+                    }
+                    $__psysh__->writeException($_e);
+
+                    return;
+                } catch (ThrowUpException $_e) {
+                    restore_error_handler();
+                    if (ob_get_level() > 0) {
+                        ob_end_clean();
+                    }
+                    $__psysh__->writeException($_e);
+
+                    throw $_e;
+                } catch (\Exception $_e) {
+                    restore_error_handler();
+                    if (ob_get_level() > 0) {
+                        ob_end_clean();
+                    }
+                    $__psysh__->writeException($_e);
+                }
+
+                // a bit of housekeeping
+                unset($__psysh_out__);
+                $__psysh__->afterLoop();
+            } while (true);
+        };
+
+        // bind the closure to $this from the shell scope variables...
+        if (self::bindLoop()) {
+            $that = null;
+            try {
+                $that = $shell->getScopeVariable('this');
+            } catch (\InvalidArgumentException $e) {
+                // well, it was worth a shot
+            }
+
+            if (is_object($that)) {
+                $loop = $loop->bindTo($that, get_class($that));
+            } else {
+                $loop = $loop->bindTo(null, null);
+            }
+        }
+
+        $loop($shell);
+    }
+
+    /**
+     * A beforeLoop callback.
+     *
+     * This is executed at the start of each loop iteration. In the default
+     * (non-forking) loop implementation, this is a no-op.
+     */
+    public function beforeLoop()
+    {
+        // no-op
+    }
+
+    /**
+     * A afterLoop callback.
+     *
+     * This is executed at the end of each loop iteration. In the default
+     * (non-forking) loop implementation, this is a no-op.
+     */
+    public function afterLoop()
+    {
+        // no-op
+    }
+
+    /**
+     * Decide whether to bind the execution loop.
+     *
+     * @return boolean
+     */
+    protected static function bindLoop()
+    {
+        // skip binding on HHVM <= 3.5.0
+        // see https://github.com/facebook/hhvm/issues/1203
+        if (defined('HHVM_VERSION')) {
+            return version_compare(HHVM_VERSION, '3.5.0', '>=');
+        }
+
+        return version_compare(PHP_VERSION, '5.4', '>=');
+    }
+}

vendor/psy/psysh/src/Psy/Formatter/CodeFormatter.php

@@ -0,0 +1,54 @@
+<?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\Formatter;
+
+use JakubOnderka\PhpConsoleColor\ConsoleColor;
+use JakubOnderka\PhpConsoleHighlighter\Highlighter;
+use Psy\Exception\RuntimeException;
+
+/**
+ * A pretty-printer for code.
+ */
+class CodeFormatter implements Formatter
+{
+    /**
+     * Format the code represented by $reflector.
+     *
+     * @param \Reflector $reflector
+     *
+     * @return string formatted code
+     */
+    public static function format(\Reflector $reflector)
+    {
+        if ($fileName = $reflector->getFileName()) {
+            if (!is_file($fileName)) {
+                throw new RuntimeException('Source code unavailable.');
+            }
+
+            $file  = file_get_contents($fileName);
+            $start = $reflector->getStartLine();
+            $end   = $reflector->getEndLine() - $start;
+
+            $colors = new ConsoleColor();
+            $colors->addTheme('line_number', array('blue'));
+            $highlighter = new Highlighter($colors);
+
+            return $highlighter->getCodeSnippet($file, $start, 0, $end);
+
+            // no need to escape this bad boy, since (for now) it's being output raw.
+            // return OutputFormatter::escape(implode(PHP_EOL, $code));
+            return implode(PHP_EOL, $code);
+        } else {
+            throw new RuntimeException('Source code unavailable.');
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Formatter/DocblockFormatter.php

@@ -0,0 +1,168 @@
+<?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\Formatter;
+
+use Psy\Util\Docblock;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+
+/**
+ * A pretty-printer for docblocks.
+ */
+class DocblockFormatter implements Formatter
+{
+    private static $vectorParamTemplates = array(
+        'type' => 'info',
+        'var'  => 'strong',
+    );
+
+    /**
+     * Format a docblock.
+     *
+     * @param \Reflector $reflector
+     *
+     * @return string Formatted docblock
+     */
+    public static function format(\Reflector $reflector)
+    {
+        $docblock = new Docblock($reflector);
+        $chunks   = array();
+
+        if (!empty($docblock->desc)) {
+            $chunks[] = '<comment>Description:</comment>';
+            $chunks[] = self::indent(OutputFormatter::escape($docblock->desc), '  ');
+            $chunks[] = '';
+        }
+
+        if (!empty($docblock->tags)) {
+            foreach ($docblock::$vectors as $name => $vector) {
+                if (isset($docblock->tags[$name])) {
+                    $chunks[] = sprintf('<comment>%s:</comment>', self::inflect($name));
+                    $chunks[] = self::formatVector($vector, $docblock->tags[$name]);
+                    $chunks[] = '';
+                }
+            }
+
+            $tags = self::formatTags(array_keys($docblock::$vectors), $docblock->tags);
+            if (!empty($tags)) {
+                $chunks[] = $tags;
+                $chunks[] = '';
+            }
+        }
+
+        return rtrim(implode("\n", $chunks));
+    }
+
+    /**
+     * Format a docblock vector, for example, `@throws`, `@param`, or `@return`.
+     *
+     * @see DocBlock::$vectors
+     *
+     * @param array $vector
+     * @param array $lines
+     *
+     * @return string
+     */
+    private static function formatVector(array $vector, array $lines)
+    {
+        $template = array(' ');
+        foreach ($vector as $type) {
+            $max = 0;
+            foreach ($lines as $line) {
+                $chunk = $line[$type];
+                $cur = empty($chunk) ? 0 : strlen($chunk) + 1;
+                if ($cur > $max) {
+                    $max = $cur;
+                }
+            }
+
+            $template[] = self::getVectorParamTemplate($type, $max);
+        }
+        $template = implode(' ', $template);
+
+        return implode("\n", array_map(function ($line) use ($template) {
+            $escaped = array_map(array('Symfony\Component\Console\Formatter\OutputFormatter', 'escape'), $line);
+
+            return rtrim(vsprintf($template, $escaped));
+        }, $lines));
+    }
+
+    /**
+     * Format docblock tags.
+     *
+     * @param array $skip Tags to exclude
+     * @param array $tags Tags to format
+     *
+     * @return string formatted tags
+     */
+    private static function formatTags(array $skip, array $tags)
+    {
+        $chunks = array();
+
+        foreach ($tags as $name => $values) {
+            if (in_array($name, $skip)) {
+                continue;
+            }
+
+            foreach ($values as $value) {
+                $chunks[] = sprintf('<comment>%s%s</comment> %s', self::inflect($name), empty($value) ? '' : ':', OutputFormatter::escape($value));
+            }
+
+            $chunks[] = '';
+        }
+
+        return implode("\n", $chunks);
+    }
+
+    /**
+     * Get a docblock vector template.
+     *
+     * @param string $type Vector type
+     * @param int    $max  Pad width
+     *
+     * @return string
+     */
+    private static function getVectorParamTemplate($type, $max)
+    {
+        if (!isset(self::$vectorParamTemplates[$type])) {
+            return sprintf('%%-%ds', $max);
+        }
+
+        return sprintf('<%s>%%-%ds</%s>', self::$vectorParamTemplates[$type], $max, self::$vectorParamTemplates[$type]);
+    }
+
+    /**
+     * Indent a string.
+     *
+     * @param string $text   String to indent
+     * @param string $indent (default: '  ')
+     *
+     * @return string
+     */
+    private static function indent($text, $indent = '  ')
+    {
+        return $indent . str_replace("\n", "\n" . $indent, $text);
+    }
+
+    /**
+     * Convert underscored or whitespace separated words into sentence case.
+     *
+     * @param string $text
+     *
+     * @return string
+     */
+    private static function inflect($text)
+    {
+        $words = trim(preg_replace('/[\s_-]+/', ' ', preg_replace('/([a-z])([A-Z])/', '$1 $2', $text)));
+
+        return implode(' ', array_map('ucfirst', explode(' ', $words)));
+    }
+}

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

@@ -0,0 +1,25 @@
+<?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\Formatter;
+
+/**
+ * Formatter interface.
+ */
+interface Formatter
+{
+    /**
+     * @param \Reflector $reflector
+     *
+     * @return string
+     */
+    public static function format(\Reflector $reflector);
+}

vendor/psy/psysh/src/Psy/Formatter/SignatureFormatter.php

@@ -0,0 +1,269 @@
+<?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\Formatter;
+
+use Psy\Reflection\ReflectionConstant;
+use Psy\Util\Json;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+
+/**
+ * An abstract representation of a function, class or property signature.
+ */
+class SignatureFormatter implements Formatter
+{
+    /**
+     * Format a signature for the given reflector.
+     *
+     * Defers to subclasses to do the actual formatting.
+     *
+     * @param \Reflector $reflector
+     *
+     * @return string Formatted signature.
+     */
+    public static function format(\Reflector $reflector)
+    {
+        switch (true) {
+            case $reflector instanceof \ReflectionFunction:
+                return self::formatFunction($reflector);
+
+            // this case also covers \ReflectionObject:
+            case $reflector instanceof \ReflectionClass:
+                return self::formatClass($reflector);
+
+            case $reflector instanceof ReflectionConstant:
+                return self::formatConstant($reflector);
+
+            case $reflector instanceof \ReflectionMethod:
+                return self::formatMethod($reflector);
+
+            case $reflector instanceof \ReflectionProperty:
+                return self::formatProperty($reflector);
+
+            default:
+                throw new \InvalidArgumentException('Unexpected Reflector class: ' . get_class($reflector));
+        }
+    }
+
+    /**
+     * Print the signature name.
+     *
+     * @param \Reflector $reflector
+     *
+     * @return string Formatted name.
+     */
+    public static function formatName(\Reflector $reflector)
+    {
+        return $reflector->getName();
+    }
+
+    /**
+     * Print the method, property or class modifiers.
+     *
+     * Technically this should be a trait. Can't wait for 5.4 :)
+     *
+     * @param \Reflector $reflector
+     *
+     * @return string Formatted modifiers.
+     */
+    private static function formatModifiers(\Reflector $reflector)
+    {
+        return implode(' ', array_map(function ($modifier) {
+            return sprintf('<keyword>%s</keyword>', $modifier);
+        }, \Reflection::getModifierNames($reflector->getModifiers())));
+    }
+
+    /**
+     * Format a class signature.
+     *
+     * @param \ReflectionClass $reflector
+     *
+     * @return string Formatted signature.
+     */
+    private static function formatClass(\ReflectionClass $reflector)
+    {
+        $chunks = array();
+
+        if ($modifiers = self::formatModifiers($reflector)) {
+            $chunks[] = $modifiers;
+        }
+
+        if (version_compare(PHP_VERSION, '5.4', '>=') && $reflector->isTrait()) {
+            $chunks[] = 'trait';
+        } else {
+            $chunks[] = $reflector->isInterface() ? 'interface' : 'class';
+        }
+
+        $chunks[] = sprintf('<class>%s</class>', self::formatName($reflector));
+
+        if ($parent = $reflector->getParentClass()) {
+            $chunks[] = 'extends';
+            $chunks[] = sprintf('<class>%s</class>', $parent->getName());
+        }
+
+        $interfaces = $reflector->getInterfaceNames();
+        if (!empty($interfaces)) {
+            $chunks[] = 'implements';
+            $chunks[] = implode(', ', array_map(function ($name) {
+                return sprintf('<class>%s</class>', $name);
+            }, $interfaces));
+        }
+
+        return implode(' ', $chunks);
+    }
+
+    /**
+     * Format a constant signature.
+     *
+     * @param ReflectionConstant $reflector
+     *
+     * @return string Formatted signature.
+     */
+    private static function formatConstant(ReflectionConstant $reflector)
+    {
+        $value = $reflector->getValue();
+        $style = self::getTypeStyle($value);
+
+        return sprintf(
+            '<keyword>const</keyword> <const>%s</const> = <%s>%s</%s>',
+            self::formatName($reflector),
+            $style,
+            OutputFormatter::escape(Json::encode($value)),
+            $style
+        );
+    }
+
+    /**
+     * Helper for getting output style for a given value's type.
+     *
+     * @param mixed $value
+     *
+     * @return string
+     */
+    private static function getTypeStyle($value)
+    {
+        if (is_int($value) || is_float($value)) {
+            return 'number';
+        } elseif (is_string($value)) {
+            return 'string';
+        } elseif (is_bool($value) || is_null($value)) {
+            return 'bool';
+        } else {
+            return 'strong';
+        }
+    }
+
+    /**
+     * Format a property signature.
+     *
+     * @param \ReflectionProperty $reflector
+     *
+     * @return string Formatted signature.
+     */
+    private static function formatProperty(\ReflectionProperty $reflector)
+    {
+        return sprintf(
+            '%s <strong>$%s</strong>',
+            self::formatModifiers($reflector),
+            $reflector->getName()
+        );
+    }
+
+    /**
+     * Format a function signature.
+     *
+     * @param \ReflectionFunction $reflector
+     *
+     * @return string Formatted signature.
+     */
+    private static function formatFunction(\ReflectionFunctionAbstract $reflector)
+    {
+        return sprintf(
+            '<keyword>function</keyword> %s<function>%s</function>(%s)',
+            $reflector->returnsReference() ? '&' : '',
+            self::formatName($reflector),
+            implode(', ', self::formatFunctionParams($reflector))
+        );
+    }
+
+    /**
+     * Format a method signature.
+     *
+     * @param \ReflectionMethod $reflector
+     *
+     * @return string Formatted signature.
+     */
+    private static function formatMethod(\ReflectionMethod $reflector)
+    {
+        return sprintf(
+            '%s %s',
+            self::formatModifiers($reflector),
+            self::formatFunction($reflector)
+        );
+    }
+
+    /**
+     * Print the function params.
+     *
+     * @param \ReflectionFunctionAbstract $reflector
+     *
+     * @return string
+     */
+    private static function formatFunctionParams(\ReflectionFunctionAbstract $reflector)
+    {
+        $params = array();
+        foreach ($reflector->getParameters() as $param) {
+            $hint = '';
+            try {
+                if ($param->isArray()) {
+                    $hint = '<keyword>array</keyword> ';
+                } elseif ($class = $param->getClass()) {
+                    $hint = sprintf('<class>%s</class> ', $class->getName());
+                }
+            } catch (\Exception $e) {
+                // sometimes we just don't know...
+                // bad class names, or autoloaded classes that haven't been loaded yet, or whathaveyou.
+                // come to think of it, the only time I've seen this is with the intl extension.
+
+                // Hax: we'll try to extract it :P
+                $chunks = explode('$' . $param->getName(), (string) $param);
+                $chunks = explode(' ', trim($chunks[0]));
+                $guess  = end($chunks);
+
+                $hint = sprintf('<urgent>%s</urgent> ', $guess);
+            }
+
+            if ($param->isOptional()) {
+                if (!$param->isDefaultValueAvailable()) {
+                    $value     = 'unknown';
+                    $typeStyle = 'urgent';
+                } else {
+                    $value     = $param->getDefaultValue();
+                    $typeStyle = self::getTypeStyle($value);
+                    $value     = is_array($value) ? 'array()' : is_null($value) ? 'null' : var_export($value, true);
+                }
+                $default   = sprintf(' = <%s>%s</%s>', $typeStyle, OutputFormatter::escape($value), $typeStyle);
+            } else {
+                $default = '';
+            }
+
+            $params[] = sprintf(
+                '%s%s<strong>$%s</strong>%s',
+                $param->isPassedByReference() ? '&' : '',
+                $hint,
+                $param->getName(),
+                $default
+            );
+        }
+
+        return $params;
+    }
+}

vendor/psy/psysh/src/Psy/Output/OutputPager.php

@@ -0,0 +1,26 @@
+<?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\Output;
+
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * An output pager is much the same as a regular OutputInterface, but allows
+ * the stream to be flushed to a pager periodically.
+ */
+interface OutputPager extends OutputInterface
+{
+    /**
+     * Close the current pager process.
+     */
+    public function close();
+}

vendor/psy/psysh/src/Psy/Output/PassthruPager.php

@@ -0,0 +1,39 @@
+<?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\Output;
+
+use Symfony\Component\Console\Output\StreamOutput;
+
+/**
+ * A passthrough pager is a no-op. It simply wraps a StreamOutput's stream and
+ * does nothing when the pager is closed.
+ */
+class PassthruPager extends StreamOutput implements OutputPager
+{
+    /**
+     * Constructor.
+     *
+     * @param StreamOutput $output
+     */
+    public function __construct(StreamOutput $output)
+    {
+        parent::__construct($output->getStream());
+    }
+
+    /**
+     * Close the current pager process.
+     */
+    public function close()
+    {
+        // nothing to do here
+    }
+}

vendor/psy/psysh/src/Psy/Output/ProcOutputPager.php

@@ -0,0 +1,103 @@
+<?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\Output;
+
+use Symfony\Component\Console\Output\StreamOutput;
+
+/**
+ * ProcOutputPager class.
+ *
+ * A ProcOutputPager instance wraps a regular StreamOutput's stream. Rather
+ * than writing directly to the stream, it shells out to a pager process and
+ * gives that process the stream as stdout. This means regular *nix commands
+ * like `less` and `more` can be used to page large amounts of output.
+ */
+class ProcOutputPager extends StreamOutput implements OutputPager
+{
+    private $proc;
+    private $pipe;
+    private $stream;
+    private $cmd;
+
+    /**
+     * Constructor.
+     *
+     * @param StreamOutput $output
+     * @param string       $cmd    Pager process command (default: 'less -R -S -F -X')
+     */
+    public function __construct(StreamOutput $output, $cmd = 'less -R -S -F -X')
+    {
+        $this->stream = $output->getStream();
+        $this->cmd    = $cmd;
+    }
+
+    /**
+     * Writes a message to the output.
+     *
+     * @param string  $message A message to write to the output
+     * @param Boolean $newline Whether to add a newline or not
+     *
+     * @throws \RuntimeException When unable to write output (should never happen)
+     */
+    public function doWrite($message, $newline)
+    {
+        $pipe = $this->getPipe();
+        if (false === @fwrite($pipe, $message . ($newline ? PHP_EOL : ''))) {
+            // @codeCoverageIgnoreStart
+            // should never happen
+            throw new \RuntimeException('Unable to write output.');
+            // @codeCoverageIgnoreEnd
+        }
+
+        fflush($pipe);
+    }
+
+    /**
+     * Close the current pager process.
+     */
+    public function close()
+    {
+        if (isset($this->pipe)) {
+            fclose($this->pipe);
+        }
+
+        if (isset($this->proc)) {
+            $exit = proc_close($this->proc);
+            if ($exit !== 0) {
+                throw new \RuntimeException('Error closing output stream');
+            }
+        }
+
+        unset($this->pipe, $this->proc);
+    }
+
+    /**
+     * Get a pipe for paging output.
+     *
+     * If no active pager process exists, fork one and return its input pipe.
+     */
+    private function getPipe()
+    {
+        if (!isset($this->pipe) || !isset($this->proc)) {
+            $desc = array(array('pipe', 'r'), $this->stream, fopen('php://stderr', 'w'));
+            $this->proc = proc_open($this->cmd, $desc, $pipes);
+
+            if (!is_resource($this->proc)) {
+                throw new \RuntimeException('Error opening output stream');
+            }
+
+            $this->pipe = $pipes[0];
+        }
+
+        return $this->pipe;
+    }
+}

vendor/psy/psysh/src/Psy/Output/ShellOutput.php

@@ -0,0 +1,201 @@
+<?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\Output;
+
+use Symfony\Component\Console\Formatter\OutputFormatterStyle;
+use Symfony\Component\Console\Output\ConsoleOutput;
+
+/**
+ * A ConsoleOutput subclass specifically for Psy Shell output.
+ */
+class ShellOutput extends ConsoleOutput
+{
+    const NUMBER_LINES = 128;
+
+    private $paging = 0;
+    private $pager;
+
+    /**
+     * Construct a ShellOutput instance.
+     *
+     * @param mixed                    $verbosity (default: self::VERBOSITY_NORMAL)
+     * @param boolean                  $decorated (default: null)
+     * @param OutputFormatterInterface $formatter (default: null)
+     * @param null|string|OutputPager  $pager     (default: null)
+     */
+    public function __construct($verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null, $pager = null)
+    {
+        parent::__construct($verbosity, $decorated, $formatter);
+
+        $this->initFormatters();
+
+        if ($pager === null) {
+            $this->pager = new PassthruPager($this);
+        } elseif (is_string($pager)) {
+            $this->pager = new ProcOutputPager($this, $pager);
+        } elseif ($pager instanceof OutputPager) {
+            $this->pager = $pager;
+        } else {
+            throw new \InvalidArgumentException('Unexpected pager parameter: ' . $pager);
+        }
+    }
+
+    /**
+     * Page multiple lines of output.
+     *
+     * The output pager is started
+     *
+     * If $messages is callable, it will be called, passing this output instance
+     * for rendering. Otherwise, all passed $messages are paged to output.
+     *
+     * Upon completion, the output pager is flushed.
+     *
+     * @param string|array|Closure $messages A string, array of strings or a callback.
+     * @param int                  $type     (default: 0)
+     */
+    public function page($messages, $type = 0)
+    {
+        if (is_string($messages)) {
+            $messages = (array) $messages;
+        }
+
+        if (!is_array($messages) && !is_callable($messages)) {
+            throw new \InvalidArgumentException('Paged output requires a string, array or callback.');
+        }
+
+        $this->startPaging();
+
+        if (is_callable($messages)) {
+            $messages($this);
+        } else {
+            $this->write($messages, true, $type);
+        }
+
+        $this->stopPaging();
+    }
+
+    /**
+     * Start sending output to the output pager.
+     */
+    public function startPaging()
+    {
+        $this->paging++;
+    }
+
+    /**
+     * Stop paging output and flush the output pager.
+     */
+    public function stopPaging()
+    {
+        $this->paging--;
+        $this->closePager();
+    }
+
+    /**
+     * Writes a message to the output.
+     *
+     * Optionally, pass `$type | self::NUMBER_LINES` as the $type parameter to
+     * number the lines of output.
+     *
+     * @throws \InvalidArgumentException When unknown output type is given
+     *
+     * @param string|array $messages The message as an array of lines or a single string
+     * @param Boolean      $newline  Whether to add a newline or not
+     * @param integer      $type     The type of output
+     */
+    public function write($messages, $newline = false, $type = 0)
+    {
+        if ($this->getVerbosity() === self::VERBOSITY_QUIET) {
+            return;
+        }
+
+        $messages = (array) $messages;
+
+        if ($type & self::NUMBER_LINES) {
+            $pad = strlen((string) count($messages));
+            $template = $this->isDecorated() ? "<aside>%{$pad}s</aside>: %s" : "%{$pad}s: %s";
+
+            if ($type & self::OUTPUT_RAW) {
+                $messages = array_map(array('Symfony\Component\Console\Formatter\OutputFormatter', 'escape'), $messages);
+            }
+
+            foreach ($messages as $i => $line) {
+                $messages[$i] = sprintf($template, $i, $line);
+            }
+
+            // clean this up for super.
+            $type = $type & ~self::NUMBER_LINES & ~self::OUTPUT_RAW;
+        }
+
+        parent::write($messages, $newline, $type);
+    }
+
+    /**
+     * Writes a message to the output.
+     *
+     * Handles paged output, or writes directly to the output stream.
+     *
+     * @param string  $message A message to write to the output
+     * @param Boolean $newline Whether to add a newline or not
+     */
+    public function doWrite($message, $newline)
+    {
+        if ($this->paging > 0) {
+            $this->pager->doWrite($message, $newline);
+        } else {
+            parent::doWrite($message, $newline);
+        }
+    }
+
+    /**
+     * Flush and close the output pager.
+     */
+    private function closePager()
+    {
+        if ($this->paging <= 0) {
+            $this->pager->close();
+        }
+    }
+
+    /**
+     * Initialize output formatter styles.
+     */
+    private function initFormatters()
+    {
+        $formatter = $this->getFormatter();
+
+        $formatter->setStyle('warning', new OutputFormatterStyle('black', 'yellow'));
+        $formatter->setStyle('aside',   new OutputFormatterStyle('blue'));
+        $formatter->setStyle('strong',  new OutputFormatterStyle(null, null, array('bold')));
+        $formatter->setStyle('return',  new OutputFormatterStyle('cyan'));
+        $formatter->setStyle('urgent',  new OutputFormatterStyle('red'));
+        $formatter->setStyle('hidden',  new OutputFormatterStyle('black'));
+
+        // Visibility
+        $formatter->setStyle('public',    new OutputFormatterStyle(null, null, array('bold')));
+        $formatter->setStyle('protected', new OutputFormatterStyle('yellow'));
+        $formatter->setStyle('private',   new OutputFormatterStyle('red'));
+        $formatter->setStyle('global',    new OutputFormatterStyle('cyan', null, array('bold')));
+        $formatter->setStyle('const',     new OutputFormatterStyle('cyan'));
+        $formatter->setStyle('class',     new OutputFormatterStyle('blue', null, array('underscore')));
+        $formatter->setStyle('function',  new OutputFormatterStyle(null));
+
+        // Types
+        $formatter->setStyle('number',   new OutputFormatterStyle('magenta'));
+        $formatter->setStyle('string',   new OutputFormatterStyle('green'));
+        $formatter->setStyle('bool',     new OutputFormatterStyle('cyan'));
+        $formatter->setStyle('keyword',  new OutputFormatterStyle('yellow'));
+        $formatter->setStyle('comment',  new OutputFormatterStyle('blue'));
+        $formatter->setStyle('object',   new OutputFormatterStyle('blue'));
+        $formatter->setStyle('resource', new OutputFormatterStyle('yellow'));
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/ArrayPresenter.php

@@ -0,0 +1,174 @@
+<?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\Presenter;
+
+use Psy\Util\Json;
+
+/**
+ * An array Presenter.
+ */
+class ArrayPresenter extends RecursivePresenter
+{
+    const ARRAY_OBJECT_FMT = '<object>\\<<class>%s</class> <strong>#%s</strong>></object>';
+
+    /**
+     * ArrayPresenter can present arrays.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return is_array($value) || $this->isArrayObject($value);
+    }
+
+    /**
+     * Determine whether something is an ArrayObject.
+     *
+     * This is a useful extension point for Presenter subclasses for Array-like
+     * objects which aren't necessarily subclasses of ArrayObject.
+     *
+     * @return boolean
+     */
+    protected function isArrayObject($value)
+    {
+        return $value instanceof \ArrayObject;
+    }
+
+    /**
+     * Present a reference to the array.
+     *
+     * @param array $value
+     *
+     * @return string
+     */
+    public function presentRef($value)
+    {
+        if ($this->isArrayObject($value)) {
+            return $this->presentArrayObjectRef($value);
+        } elseif (empty($value)) {
+            return '[]';
+        } else {
+            return sprintf('Array(<number>%d</number>)', count($value));
+        }
+    }
+
+    /**
+     * Present a reference to an ArrayObject.
+     *
+     * @param ArrayObject $value
+     *
+     * @return string
+     */
+    protected function presentArrayObjectRef($value)
+    {
+        return sprintf(self::ARRAY_OBJECT_FMT, get_class($value), spl_object_hash($value));
+    }
+
+    /**
+     * Get an array of values from an ArrayObject.
+     *
+     * This is a useful extension point for Presenter subclasses for Array-like
+     * objects which aren't necessarily subclasses of ArrayObject.
+     *
+     * @return array
+     */
+    protected function getArrayObjectValue($value)
+    {
+        return iterator_to_array($value->getIterator());
+    }
+
+    /**
+     * Present the array.
+     *
+     * @param object $value
+     * @param int    $depth   (default: null)
+     * @param int    $options One of Presenter constants
+     *
+     * @return string
+     */
+    protected function presentValue($value, $depth = null, $options = 0)
+    {
+        $prefix = '';
+        if ($this->isArrayObject($value)) {
+            $prefix = $this->presentArrayObjectRef($value) . ' ';
+            $value  = $this->getArrayObjectValue($value);
+        }
+
+        if (empty($value) || $depth === 0) {
+            return $prefix . $this->presentRef($value);
+        }
+
+        $formatted = array();
+        foreach ($value as $key => $val) {
+            $formatted[$key] = $this->presentSubValue($val);
+        }
+
+        if ($this->shouldShowKeys($value)) {
+            $pad = max(array_map('strlen', array_map(array('Psy\Util\Json', 'encode'), array_keys($value))));
+            foreach ($formatted as $key => $val) {
+                $formatted[$key] = $this->formatKeyAndValue($key, $val, $pad);
+            }
+        } else {
+            $formatted = array_map(array($this, 'indentValue'), $formatted);
+        }
+
+        $template = sprintf('%s[%s%s%%s%s]', $prefix, PHP_EOL, self::INDENT, PHP_EOL);
+        $glue     = sprintf(',%s%s', PHP_EOL, self::INDENT);
+
+        return sprintf($template, implode($glue, $formatted));
+    }
+
+    /**
+     * Helper method for determining whether to render array keys.
+     *
+     * Keys are only rendered for associative arrays or non-consecutive integer-
+     * based arrays.
+     *
+     * @param array $array
+     *
+     * @return boolean
+     */
+    protected function shouldShowKeys(array $array)
+    {
+        $i = 0;
+        foreach (array_keys($array) as $k) {
+            if ($k !== $i++) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Format a key => value pair.
+     *
+     * @param mixed   $key
+     * @param string  $value
+     * @param integer $pad   Maximum key width, to align the hashrockets.
+     *
+     * @return string
+     */
+    protected function formatKeyAndValue($key, $value, $pad = 0)
+    {
+        $type = is_string($value) ? 'string' : 'number';
+        $tpl  = "<$type>%-${pad}s</$type> => %s";
+
+        return sprintf(
+            $tpl,
+            Json::encode($key),
+            $this->indentValue($value)
+        );
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/ClosurePresenter.php

@@ -0,0 +1,173 @@
+<?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\Presenter;
+
+/**
+ * A Closure Presenter.
+ */
+class ClosurePresenter implements Presenter, PresenterManagerAware
+{
+    const FMT     = '<keyword>function</keyword> (%s)%s { <comment>...</comment> }';
+    const USE_FMT = ' use (%s)';
+
+    protected $manager;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->manager = $manager;
+    }
+
+    /**
+     * ClosurePresenter can present closures.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return $value instanceof \Closure;
+    }
+
+    /**
+     * Present a reference to the value.
+     *
+     * @param mixed $value
+     *
+     * @return string
+     */
+    public function presentRef($value)
+    {
+        return sprintf(
+            self::FMT,
+            $this->formatParams($value),
+            $this->formatStaticVariables($value)
+        );
+    }
+
+    /**
+     * Present the Closure.
+     *
+     * @param \Closure $value
+     * @param int      $depth   (default:null)
+     * @param int      $options One of Presenter constants
+     *
+     * @return string
+     */
+    public function present($value, $depth = null, $options = 0)
+    {
+        return $this->presentRef($value);
+    }
+
+    /**
+     * Format a list of Closure parameters.
+     *
+     * @param \Closure $value
+     *
+     * @return string
+     */
+    protected function formatParams(\Closure $value)
+    {
+        $r = new \ReflectionFunction($value);
+        $params = array_map(array($this, 'formatParam'), $r->getParameters());
+
+        return implode(', ', $params);
+    }
+
+    /**
+     * Format an individual Closure parameter.
+     *
+     * @param \ReflectionParameter $param
+     *
+     * @return string
+     */
+    protected function formatParam(\ReflectionParameter $param)
+    {
+        $ret = $this->formatParamName($param->name);
+
+        if ($param->isOptional()) {
+            $ret .= ' = ';
+
+            if (self::isParamDefaultValueConstant($param)) {
+                $name = $param->getDefaultValueConstantName();
+                $ret .= '<const>' . $name . '</const>';
+            } elseif ($param->isDefaultValueAvailable()) {
+                $ret .= $this->manager->presentRef($param->getDefaultValue());
+            } else {
+                $ret .= '<urgent>?</urgent>';
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Format static (used) variable names.
+     *
+     * @param \Closure $value
+     *
+     * @return string
+     */
+    protected function formatStaticVariables(\Closure $value)
+    {
+        $r = new \ReflectionFunction($value);
+        $used = $r->getStaticVariables();
+        if (empty($used)) {
+            return '';
+        }
+
+        $names = array_map(array($this, 'formatParamName'), array_keys($used));
+
+        return sprintf(
+            self::USE_FMT,
+            implode(', ', $names)
+        );
+    }
+
+    /**
+     * Format a Closure parameter name.
+     *
+     * @param string $name
+     *
+     * @return string
+     */
+    protected function formatParamName($name)
+    {
+        return sprintf('$<strong>%s</strong>', $name);
+    }
+
+    /**
+     * Check whether a parameter's default value is a constant.
+     *
+     * This is only supported in PHP >= 5.4.3, and currently unimplemented in
+     * HHVM.
+     *
+     * @param \ReflectionParameter $param
+     *
+     * @return boolean
+     */
+    protected static function isParamDefaultValueConstant(\ReflectionParameter $param)
+    {
+        // HHVM doesn't currently support `isDefaultValueConstant`, skip for now
+        // see https://github.com/facebook/hhvm/issues/3812
+        if (defined('HHVM_VERSION')) {
+            return false;
+        }
+
+        return version_compare(PHP_VERSION, '5.4.3', '>=') && $param->isDefaultValueConstant();
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/ExceptionPresenter.php

@@ -0,0 +1,52 @@
+<?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\Presenter;
+
+/**
+ * An Exception Presenter.
+ */
+class ExceptionPresenter extends ObjectPresenter
+{
+    /**
+     * ExceptionPresenter can present Exceptions.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return $value instanceof \Exception;
+    }
+
+    /**
+     * Get an array of exception object properties.
+     *
+     * @param object           $value
+     * @param \ReflectionClass $class
+     * @param int              $options One of Presenter constants
+     *
+     * @return array
+     */
+    protected function getProperties($value, \ReflectionClass $class, $options = 0)
+    {
+        $props = array(
+            '<protected>message</protected>' => $value->getMessage(),
+            '<protected>code</protected>'    => $value->getCode(),
+            '<protected>file</protected>'    => $value->getFile(),
+            '<protected>line</protected>'    => $value->getLine(),
+            '<private>previous</private>'    => $value->getPrevious(),
+        );
+
+        return array_merge(array_filter($props), parent::getProperties($value, $class, $options));
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/MongoCursorPresenter.php

@@ -0,0 +1,119 @@
+<?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\Presenter;
+
+/**
+ * A Mongo Cursor Presenter.
+ */
+class MongoCursorPresenter extends ObjectPresenter
+{
+    private static $boringFields = array('limit', 'batchSize', 'skip', 'flags');
+    private static $ignoreFields = array('server', 'host', 'port', 'connection_type_desc');
+
+    /**
+     * MongoCursorPresenter can present Mongo Cursors.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return $value instanceof \MongoCursor;
+    }
+
+    /**
+     * Get an array of object properties.
+     *
+     * @param object           $value
+     * @param \ReflectionClass $class
+     * @param int              $propertyFilter One of \ReflectionProperty constants
+     *
+     * @return array
+     */
+    protected function getProperties($value, \ReflectionClass $class, $propertyFilter)
+    {
+        $info = $value->info();
+
+        $this->normalizeQueryArray($info);
+        $this->normalizeFieldsArray($info);
+        $this->unsetBoringFields($info);
+        $this->unsetIgnoredFields($info);
+
+        if ($value->dead()) {
+            $info['dead'] = true;
+        }
+
+        return array_merge(
+            $info,
+            parent::getProperties($value, $class, $propertyFilter)
+        );
+    }
+
+    /**
+     * Normalize (empty) cursor query to always be an actual array.
+     *
+     * @param array $info Cursor info
+     */
+    private function normalizeQueryArray(array &$info)
+    {
+        if (isset($info['query'])) {
+            if ($info['query'] === new \StdClass()) {
+                $info['query'] = array();
+            } elseif (is_array($info['query']) && isset($info['query']['$query'])) {
+                if ($info['query']['$query'] === new \StdClass()) {
+                    $info['query']['$query'] = array();
+                }
+            }
+        }
+    }
+
+    /**
+     * Normalize (empty) cursor fields to always be an actual array.
+     *
+     * @param array $info Cursor info
+     */
+    private function normalizeFieldsArray(array &$info)
+    {
+        if (isset($info['fields']) && $info['fields'] === new \StdClass()) {
+            $info['fields'] = array();
+        }
+    }
+
+    /**
+     * Unset boring fields from the Cursor info array.
+     *
+     * @param array $info Cursor info
+     */
+    private function unsetBoringFields(array &$info)
+    {
+        foreach (self::$boringFields as $boring) {
+            if ($info[$boring] === 0) {
+                unset($info[$boring]);
+            }
+        }
+    }
+
+    /**
+     * Unset ignored fields from the Cursor info array.
+     *
+     * @param array $info Cursor info
+     */
+    private function unsetIgnoredFields(array &$info)
+    {
+        foreach (self::$ignoreFields as $ignore) {
+            if (isset($info[$ignore])) {
+                unset($info[$ignore]);
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/ObjectPresenter.php

@@ -0,0 +1,143 @@
+<?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\Presenter;
+
+/**
+ * An object Presenter.
+ */
+class ObjectPresenter extends RecursivePresenter
+{
+    const FMT = '<object>\\<<class>%s</class> <strong>#%s</strong>></object>';
+
+    /**
+     * ObjectPresenter can present objects.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return is_object($value);
+    }
+
+    /**
+     * Present a reference to the object.
+     *
+     * @param object $value
+     *
+     * @return string
+     */
+    public function presentRef($value)
+    {
+        return sprintf(self::FMT, get_class($value), spl_object_hash($value));
+    }
+
+    /**
+     * Present the object.
+     *
+     * @param object $value
+     * @param int    $depth   (default: null)
+     * @param int    $options One of Presenter constants
+     *
+     * @return string
+     */
+    protected function presentValue($value, $depth = null, $options = 0)
+    {
+        if ($depth === 0) {
+            return $this->presentRef($value);
+        }
+
+        $class = new \ReflectionObject($value);
+        $propertyFilter = \ReflectionProperty::IS_PUBLIC;
+        if ($options & Presenter::VERBOSE) {
+            $propertyFilter |= \ReflectionProperty::IS_PRIVATE | \ReflectionProperty::IS_PROTECTED;
+        }
+        $props = $this->getProperties($value, $class, $propertyFilter);
+
+        return sprintf('%s %s', $this->presentRef($value), $this->formatProperties($props));
+    }
+
+    /**
+     * Format object properties.
+     *
+     * @param array $props
+     *
+     * @return string
+     */
+    protected function formatProperties($props)
+    {
+        if (empty($props)) {
+            return '{}';
+        }
+
+        $formatted = array();
+        foreach ($props as $name => $value) {
+            $formatted[] = sprintf('%s: %s', $name, $this->indentValue($this->presentSubValue($value)));
+        }
+
+        $template = sprintf('{%s%s%%s%s}', PHP_EOL, self::INDENT, PHP_EOL);
+        $glue     = sprintf(',%s%s', PHP_EOL, self::INDENT);
+
+        return sprintf($template, implode($glue, $formatted));
+    }
+
+    /**
+     * Get an array of object properties.
+     *
+     * @param object           $value
+     * @param \ReflectionClass $class
+     * @param int              $propertyFilter One of \ReflectionProperty constants
+     *
+     * @return array
+     */
+    protected function getProperties($value, \ReflectionClass $class, $propertyFilter)
+    {
+        $deprecated = false;
+        set_error_handler(function ($errno, $errstr) use (&$deprecated) {
+            if (in_array($errno, array(E_DEPRECATED, E_USER_DEPRECATED))) {
+                $deprecated = true;
+            } else {
+                // not a deprecation error, let someone else handle this
+                return false;
+            }
+        });
+
+        $props = array();
+        foreach ($class->getProperties($propertyFilter) as $prop) {
+            $deprecated = false;
+
+            $prop->setAccessible(true);
+            $val = $prop->getValue($value);
+
+            if (!$deprecated) {
+                $props[$this->propertyKey($prop)] = $val;
+            }
+        }
+
+        restore_error_handler();
+
+        return $props;
+    }
+
+    protected function propertyKey(\ReflectionProperty $prop)
+    {
+        $key = $prop->getName();
+        if ($prop->isProtected()) {
+            return sprintf('<protected>%s</protected>', $key);
+        } elseif ($prop->isPrivate()) {
+            return sprintf('<private>%s</private>', $key);
+        }
+
+        return $key;
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/PHPParserPresenter.php

@@ -0,0 +1,69 @@
+<?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\Presenter;
+
+use PhpParser\Node;
+
+/**
+ * A PhpParser Presenter.
+ */
+class PHPParserPresenter extends ObjectPresenter
+{
+    const FMT = '<object>\\<<class>%s</class>></object>';
+
+    /**
+     * PHPParserPresenter can present parse trees.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return $value instanceof Node;
+    }
+
+    /**
+     * Present a reference to the object.
+     *
+     * @param object $value
+     *
+     * @return string
+     */
+    public function presentRef($value)
+    {
+        return sprintf(self::FMT, get_class($value));
+    }
+
+    /**
+     * Get an array of object properties.
+     *
+     * @param object           $value
+     * @param \ReflectionClass $class
+     * @param int              $propertyFilter One of \ReflectionProperty constants
+     *
+     * @return array
+     */
+    protected function getProperties($value, \ReflectionClass $class, $propertyFilter)
+    {
+        $props = array();
+
+        $props['type']       = $value->getType();
+        $props['attributes'] = $value->getAttributes();
+
+        foreach ($value->getSubNodeNames() as $name) {
+            $props[$name] = $value->$name;
+        }
+
+        return $props;
+    }
+}

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

@@ -0,0 +1,52 @@
+<?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\Presenter;
+
+/**
+ * Presenter classes are able to pretty-print values for display. Think
+ * `var_dump`, but with sane and beautiful output.
+ */
+interface Presenter
+{
+    const VERBOSE = 1;
+
+    /**
+     * Check whether this Presenter can present $value.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value);
+
+    /**
+     * Present a reference to the value.
+     *
+     * @param mixed $value
+     *
+     * @return string
+     */
+    public function presentRef($value);
+
+    /**
+     * Present a full representation of the value.
+     *
+     * Optionally pass a $depth argument to limit the depth of recursive values.
+     *
+     * @param mixed $value
+     * @param int   $depth   (default: null)
+     * @param int   $options One of Presenter constants
+     *
+     * @return string
+     */
+    public function present($value, $depth = null, $options = 0);
+}

vendor/psy/psysh/src/Psy/Presenter/PresenterManager.php

@@ -0,0 +1,177 @@
+<?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\Presenter;
+
+/**
+ * A Presenter manager service.
+ *
+ * Presenters are registered with the PresenterManager, which then delegates
+ * value presentation to the most recently registered Presenter capable of
+ * presenting that value.
+ */
+class PresenterManager implements Presenter, \IteratorAggregate
+{
+    protected $presenters = array();
+
+    /**
+     * PresenterManager constructor.
+     *
+     * Initializes default Presenters.
+     */
+    public function __construct()
+    {
+        $this->addPresenters(array(
+            new ObjectPresenter(), // lowest precedence
+            new ArrayPresenter(),
+            new ClosurePresenter(),
+            new ExceptionPresenter(),
+            new ResourcePresenter(),
+            new ScalarPresenter(),
+        ));
+    }
+
+    /**
+     * Register Presenters.
+     *
+     * Presenters should be passed in an array from lowest to highest precedence.
+     *
+     * @see self::addPresenter
+     *
+     * @param Presenter[] $presenters
+     */
+    public function addPresenters(array $presenters)
+    {
+        foreach ($presenters as $presenter) {
+            $this->addPresenter($presenter);
+        }
+    }
+
+    /**
+     * Register a Presenter.
+     *
+     * If multiple Presenters are able to present a value, the most recently
+     * registered Presenter takes precedence.
+     *
+     * If $presenter is already registered, it will be re-registered as the
+     * highest precedence Presenter.
+     *
+     * @param Presenter $presenter
+     */
+    public function addPresenter(Presenter $presenter)
+    {
+        $this->removePresenter($presenter);
+
+        if ($presenter instanceof PresenterManagerAware) {
+            $presenter->setPresenterManager($this);
+        }
+
+        array_unshift($this->presenters, $presenter);
+    }
+
+    /**
+     * Unregister a Presenter.
+     *
+     * @param Presenter $presenter
+     */
+    public function removePresenter(Presenter $presenter)
+    {
+        foreach ($this->presenters as $i => $p) {
+            if ($p === $presenter) {
+                unset($this->presenters[$i]);
+            }
+        }
+    }
+
+    /**
+     * Check whether a Presenter is registered for $value.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return $this->getPresenter($value) !== null;
+    }
+
+    /**
+     * Present a reference to the value.
+     *
+     * @param mixed $value
+     *
+     * @throws \InvalidArgumentException If no Presenter is registered for $value
+     *
+     * @return string
+     */
+    public function presentRef($value)
+    {
+        if ($presenter = $this->getPresenter($value)) {
+            return $presenter->presentRef($value);
+        }
+
+        throw new \InvalidArgumentException(sprintf('Unable to present %s', $value));
+    }
+
+    /**
+     * Present a full representation of the value.
+     *
+     * If $depth is 0, the value will be presented as a ref instead.
+     *
+     * @param mixed $value
+     * @param int   $depth   (default: null)
+     * @param int   $options One of Presenter constants
+     *
+     * @throws \InvalidArgumentException If no Presenter is registered for $value
+     *
+     * @return string
+     */
+    public function present($value, $depth = null, $options = 0)
+    {
+        if ($presenter = $this->getPresenter($value)) {
+            if ($depth === 0) {
+                return $presenter->presentRef($value);
+            }
+
+            return $presenter->present($value, $depth, $options);
+        }
+
+        throw new \InvalidArgumentException(sprintf('Unable to present %s', $value));
+    }
+
+    /**
+     * IteratorAggregate interface.
+     *
+     * @return \ArrayIterator
+     */
+    public function getIterator()
+    {
+        return new \ArrayIterator(array_reverse($this->presenters));
+    }
+
+    /**
+     * Find the highest precedence Presenter available for $value.
+     *
+     * Returns null if none is present.
+     *
+     * @param mixed $value
+     *
+     * @return null|Presenter
+     */
+    protected function getPresenter($value)
+    {
+        foreach ($this->presenters as $presenter) {
+            if ($presenter->canPresent($value)) {
+                return $presenter;
+            }
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/PresenterManagerAware.php

@@ -0,0 +1,26 @@
+<?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\Presenter;
+
+/**
+ * PresenterManager injects itself as a dependency to all Presenters which
+ * implement PresenterManagerAware.
+ */
+interface PresenterManagerAware
+{
+    /**
+     * Set a reference to the PresenterManager.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager);
+}

vendor/psy/psysh/src/Psy/Presenter/RecursivePresenter.php

@@ -0,0 +1,113 @@
+<?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\Presenter;
+
+/**
+ * An abstract Presenter capable of recursively presenting sub-values.
+ */
+abstract class RecursivePresenter implements Presenter, PresenterManagerAware
+{
+    const MAX_DEPTH = 5;
+    const INDENT    = '    ';
+
+    protected $manager;
+    protected $depth;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->manager = $manager;
+    }
+
+    /**
+     * Present the recursive value.
+     *
+     * Subclasses should implement `presentValue` rather than overriding this
+     * method.
+     *
+     * @see self::presentValue()
+     *
+     * @param mixed $value
+     * @param int   $depth   (default: null)
+     * @param int   $options One of Presenter constants
+     *
+     * @return string
+     */
+    public function present($value, $depth = null, $options = 0)
+    {
+        $this->setDepth($depth);
+
+        return $this->presentValue($value, $depth, $options);
+    }
+
+    /**
+     * RecursivePresenter subclasses implement a `presentValue` method for
+     * actually doing the presentation.
+     *
+     * @param mixed $value
+     *
+     * @return string
+     */
+    abstract protected function presentValue($value);
+
+    /**
+     * Keep track of the remaining recursion depth.
+     *
+     * If $depth is null, set it to `self::MAX_DEPTH`.
+     *
+     * @param int $depth (default: null)
+     */
+    protected function setDepth($depth = null)
+    {
+        $this->depth = $depth === null ? self::MAX_DEPTH : $depth;
+    }
+
+    /**
+     * Present a sub-value.
+     *
+     * If the current recursion depth is greater than self::MAX_DEPTH, it will
+     * present a reference, otherwise it will present the full representation
+     * of the sub-value.
+     *
+     * @see PresenterManager::present()
+     * @see PresenterManager::presentRef()
+     *
+     * @param mixed $value
+     * @param int   $options One of Presenter constants
+     *
+     * @return string
+     */
+    protected function presentSubValue($value, $options = 0)
+    {
+        $depth = $this->depth;
+        $formatted = $this->manager->present($value, $depth - 1, $options);
+        $this->setDepth($depth);
+
+        return $formatted;
+    }
+
+    /**
+     * Indent every line of a value.
+     *
+     * @param string $value
+     *
+     * @return string
+     */
+    protected function indentValue($value)
+    {
+        return str_replace(PHP_EOL, PHP_EOL . self::INDENT, $value);
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/ResourcePresenter.php

@@ -0,0 +1,115 @@
+<?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\Presenter;
+
+/**
+ * A resource Presenter.
+ */
+class ResourcePresenter extends RecursivePresenter
+{
+    const FMT = '<resource>\\<%s <strong>resource #%s</strong>></resource>';
+
+    /**
+     * Resource presenter can present resources.
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return is_resource($value);
+    }
+
+    /**
+     * Present a reference to the value.
+     *
+     * @param mixed $value
+     *
+     * @return string
+     */
+    public function presentRef($value)
+    {
+        $type = get_resource_type($value);
+        if ($type === 'stream') {
+            $meta = stream_get_meta_data($value);
+            $type = sprintf('%s stream', $meta['stream_type']);
+        }
+
+        $id = str_replace('Resource id #', '', (string) $value);
+
+        return sprintf(self::FMT, $type, $id);
+    }
+
+    /**
+     * Present the resource.
+     *
+     * @param resource $value
+     * @param int      $depth   (default: null)
+     * @param int      $options One of Presenter constants
+     *
+     * @return string
+     */
+    public function presentValue($value, $depth = null, $options = 0)
+    {
+        if ($depth === 0 || !($options & Presenter::VERBOSE)) {
+            return $this->presentRef($value);
+        }
+
+        return sprintf('%s %s', $this->presentRef($value), $this->formatMetadata($value));
+    }
+
+    /**
+     * Format resource metadata.
+     *
+     * @param resource $value
+     *
+     * @return string
+     */
+    protected function formatMetadata($value)
+    {
+        $props = array();
+
+        switch (get_resource_type($value)) {
+            case 'stream':
+                $props = stream_get_meta_data($value);
+                break;
+
+            case 'curl':
+                $props = curl_getinfo($value);
+                break;
+
+            case 'xml':
+                $props = array(
+                    'current_byte_index'    => xml_get_current_byte_index($value),
+                    'current_column_number' => xml_get_current_column_number($value),
+                    'current_line_number'   => xml_get_current_line_number($value),
+                    'error_code'            => xml_get_error_code($value),
+                );
+                break;
+        }
+
+        if (empty($props)) {
+            return '{}';
+        }
+
+        $formatted = array();
+        foreach ($props as $name => $value) {
+            $formatted[] = sprintf('%s: %s', $name, $this->indentValue($this->presentSubValue($value)));
+        }
+
+        $template = sprintf('{%s%s%%s%s}', PHP_EOL, self::INDENT, PHP_EOL);
+        $glue     = sprintf(',%s%s', PHP_EOL, self::INDENT);
+
+        return sprintf($template, implode($glue, $formatted));
+    }
+}

vendor/psy/psysh/src/Psy/Presenter/ScalarPresenter.php

@@ -0,0 +1,109 @@
+<?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\Presenter;
+
+use Psy\Util\Json;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+
+/**
+ * A scalar (and null) Presenter.
+ */
+class ScalarPresenter implements Presenter
+{
+    /**
+     * Scalar presenter can present scalars and null.
+     *
+     * Technically this would make it a ScalarOrNullPresenter, but that's a much
+     * lamer name :)
+     *
+     * @param mixed $value
+     *
+     * @return boolean
+     */
+    public function canPresent($value)
+    {
+        return is_scalar($value) || is_null($value);
+    }
+
+    /**
+     * Present a reference to the value.
+     *
+     * @param mixed $value
+     *
+     * @return string
+     */
+    public function presentRef($value)
+    {
+        return $this->present($value);
+    }
+
+    /**
+     * Present the scalar value.
+     *
+     * @param mixed $value
+     * @param int   $depth   (default: null)
+     * @param int   $options One of Presenter constants
+     *
+     * @return string
+     */
+    public function present($value, $depth = null, $options = 0)
+    {
+        $formatted = $this->format($value);
+
+        if ($typeStyle = $this->getTypeStyle($value)) {
+            return sprintf('<%s>%s</%s>', $typeStyle, $formatted, $typeStyle);
+        } else {
+            return $formatted;
+        }
+    }
+
+    private function format($value)
+    {
+        // Handle floats.
+        if (is_float($value)) {
+            // Some are unencodable...
+            if (is_nan($value)) {
+                return 'NAN';
+            } elseif (is_infinite($value)) {
+                return $value === INF ? 'INF' : '-INF';
+            }
+
+            // ... others just encode as ints when there's no decimal
+            $float = Json::encode($value);
+            if (strpos($float, '.') === false) {
+                $float .= '.0';
+            }
+
+            return $float;
+        }
+
+        return OutputFormatter::escape(Json::encode($value));
+    }
+
+    /**
+     * Get the output style for a value of a given type.
+     *
+     * @param mixed $value
+     *
+     * @return string
+     */
+    private function getTypeStyle($value)
+    {
+        if (is_int($value) || is_float($value)) {
+            return 'number';
+        } elseif (is_string($value)) {
+            return 'string';
+        } elseif (is_bool($value) || is_null($value)) {
+            return 'bool';
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Readline/GNUReadline.php

@@ -0,0 +1,155 @@
+<?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\Readline;
+
+/**
+ * A Readline interface implementation for GNU Readline.
+ *
+ * This is by far the coolest way to do it, but it doesn't work with new PHP.
+ *
+ * Oh well.
+ */
+class GNUReadline implements Readline
+{
+    protected $historyFile;
+    protected $historySize;
+    protected $eraseDups;
+
+    /**
+     * GNU Readline is supported iff `readline_list_history` is defined. PHP
+     * decided it would be awesome to swap out GNU Readline for Libedit, but
+     * they ended up shipping an incomplete implementation. So we've got this.
+     *
+     * @return bool
+     */
+    public static function isSupported()
+    {
+        return function_exists('readline_list_history');
+    }
+
+    /**
+     * GNU Readline constructor.
+     */
+    public function __construct($historyFile = null, $historySize = 0, $eraseDups = false)
+    {
+        $this->historyFile = $historyFile;
+        $this->historySize = $historySize;
+        $this->eraseDups = $eraseDups;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function addHistory($line)
+    {
+        if ($res = readline_add_history($line)) {
+            $this->writeHistory();
+        }
+
+        return $res;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function clearHistory()
+    {
+        if ($res = readline_clear_history()) {
+            $this->writeHistory();
+        }
+
+        return $res;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function listHistory()
+    {
+        return readline_list_history();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function readHistory()
+    {
+        // Workaround PHP bug #69054
+        //
+        // If open_basedir is set, readline_read_history() segfaults. This will be fixed in 5.6.7:
+        //
+        //     https://github.com/php/php-src/blob/423a057023ef3c00d2ffc16a6b43ba01d0f71796/NEWS#L19-L21
+        //
+        // TODO: add a PHP version check after next point release
+        if (!ini_get('open_basedir')) {
+            readline_read_history();
+        }
+        readline_clear_history();
+
+        return readline_read_history($this->historyFile);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function readline($prompt = null)
+    {
+        return readline($prompt);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function redisplay()
+    {
+        readline_redisplay();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function writeHistory()
+    {
+        // We have to write history first, since it is used
+        // by Libedit to list history
+        $res = readline_write_history($this->historyFile);
+        if (!$res || !$this->eraseDups && !$this->historySize > 0) {
+            return $res;
+        }
+
+        $hist = $this->listHistory();
+        if (!$hist) {
+            return true;
+        }
+
+        if ($this->eraseDups) {
+            // flip-flip technique: removes duplicates, latest entries win.
+            $hist = array_flip(array_flip($hist));
+            // sort on keys to get the order back
+            ksort($hist);
+        }
+
+        if ($this->historySize > 0) {
+            $histsize = count($hist);
+            if ($histsize > $this->historySize) {
+                $hist = array_slice($hist, $histsize - $this->historySize);
+            }
+        }
+
+        readline_clear_history();
+        foreach ($hist as $line) {
+            readline_add_history($line);
+        }
+
+        return readline_write_history($this->historyFile);
+    }
+}

vendor/psy/psysh/src/Psy/Readline/Libedit.php

@@ -0,0 +1,83 @@
+<?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\Readline;
+
+use Psy\Util\String;
+
+/**
+ * A Libedit-based Readline implementation.
+ *
+ * This is largely the same as the Readline implementation, but it emulates
+ * support for `readline_list_history` since PHP decided it was a good idea to
+ * ship a fake Readline implementation that is missing history support.
+ */
+class Libedit extends GNUReadline
+{
+    /**
+     * Let's emulate GNU Readline by manually reading and parsing the history file!
+     *
+     * @return boolean
+     */
+    public static function isSupported()
+    {
+        return function_exists('readline') && !function_exists('readline_list_history');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function listHistory()
+    {
+        $history = file_get_contents($this->historyFile);
+        if (!$history) {
+            return array();
+        }
+
+        // libedit doesn't seem to support non-unix line separators.
+        $history = explode("\n", $history);
+
+        // shift the history signature, ensure it's valid
+        if (array_shift($history) !== '_HiStOrY_V2_') {
+            return array();
+        }
+
+        // decode the line
+        $history = array_map(array($this, 'parseHistoryLine'), $history);
+        // filter empty lines & comments
+        return array_values(array_filter($history));
+    }
+
+    /**
+     * From GNUReadline (readline/histfile.c & readline/histexpand.c):
+     * lines starting with "\0" are comments or timestamps;
+     * if "\0" is found in an entry,
+     * everything from it until the next line is a comment.
+     *
+     * @param string $line The history line to parse.
+     *
+     * @return string | null
+     */
+    protected function parseHistoryLine($line)
+    {
+        // empty line, comment or timestamp
+        if (!$line || $line[0] === "\0") {
+            return;
+        }
+        // if "\0" is found in an entry, then
+        // everything from it until the end of line is a comment.
+        if (($pos = strpos($line, "\0")) !== false) {
+            $line = substr($line, 0, $pos);
+        }
+
+        return ($line !== '') ? String::unvis($line) : null;
+    }
+}

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

@@ -0,0 +1,76 @@
+<?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\Readline;
+
+/**
+ * An interface abstracting the various readline_* functions.
+ */
+interface Readline
+{
+    /**
+     * Check whether this Readline class is supported by the current system.
+     *
+     * @return boolean
+     */
+    public static function isSupported();
+
+    /**
+     * Add a line to the command history.
+     *
+     * @param string $line
+     *
+     * @return bool Success
+     */
+    public function addHistory($line);
+
+    /**
+     * Clear the command history.
+     *
+     * @return bool Success
+     */
+    public function clearHistory();
+
+    /**
+     * List the command history.
+     *
+     * @return array
+     */
+    public function listHistory();
+
+    /**
+     * Read the command history.
+     *
+     * @return bool Success
+     */
+    public function readHistory();
+
+    /**
+     * Read a single line of input from the user.
+     *
+     * @param null|string $prompt
+     *
+     * @return false|string
+     */
+    public function readline($prompt = null);
+
+    /**
+     * Redraw readline to redraw the display.
+     */
+    public function redisplay();
+
+    /**
+     * Write the command history to a file.
+     *
+     * @return bool Success
+     */
+    public function writeHistory();
+}

vendor/psy/psysh/src/Psy/Readline/Transient.php

@@ -0,0 +1,146 @@
+<?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\Readline;
+
+use Psy\Exception\BreakException;
+
+/**
+ * An array-based Readline emulation implementation.
+ */
+class Transient implements Readline
+{
+    private $history;
+    private $historySize;
+    private $eraseDups;
+
+    /**
+     * Transient Readline is always supported.
+     *
+     * {@inheritDoc}
+     */
+    public static function isSupported()
+    {
+        return true;
+    }
+
+    /**
+     * Transient Readline constructor.
+     */
+    public function __construct($historyFile = null, $historySize = 0, $eraseDups = false)
+    {
+        // don't do anything with the history file...
+        $this->history     = array();
+        $this->historySize = $historySize;
+        $this->eraseDups   = $eraseDups;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function addHistory($line)
+    {
+        if ($this->eraseDups) {
+            if (($key = array_search($line, $this->history)) !== false) {
+                unset($this->history[$key]);
+            }
+        }
+
+        $this->history[] = $line;
+
+        if ($this->historySize > 0) {
+            $histsize = count($this->history);
+            if ($histsize > $this->historySize) {
+                $this->history = array_slice($this->history, $histsize - $this->historySize);
+            }
+        }
+
+        $this->history = array_values($this->history);
+
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function clearHistory()
+    {
+        $this->history = array();
+
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function listHistory()
+    {
+        return $this->history;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function readHistory()
+    {
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @throws BreakException if user hits Ctrl+D
+     *
+     * @return string
+     */
+    public function readline($prompt = null)
+    {
+        echo $prompt;
+
+        return rtrim(fgets($this->getStdin(), 1024));
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function redisplay()
+    {
+        // noop
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function writeHistory()
+    {
+        return true;
+    }
+
+    /**
+     * Get a STDIN file handle.
+     *
+     * @throws BreakException if user hits Ctrl+D
+     *
+     * @return resource
+     */
+    private function getStdin()
+    {
+        if (!isset($this->stdin)) {
+            $this->stdin = fopen('php://stdin', 'r');
+        }
+
+        if (feof($this->stdin)) {
+            throw new BreakException('Ctrl+D');
+        }
+
+        return $this->stdin;
+    }
+}

vendor/psy/psysh/src/Psy/Reflection/ReflectionConstant.php

@@ -0,0 +1,139 @@
+<?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\Reflection;
+
+/**
+ * Somehow the standard reflection library doesn't include constants.
+ *
+ * ReflectionConstant corrects that omission.
+ */
+class ReflectionConstant implements \Reflector
+{
+    private $class;
+    private $name;
+    private $value;
+
+    /**
+     * Construct a ReflectionConstant object.
+     *
+     * @param mixed  $class
+     * @param string $name
+     */
+    public function __construct($class, $name)
+    {
+        if (! $class instanceof \ReflectionClass) {
+            $class = new \ReflectionClass($class);
+        }
+
+        $this->class = $class;
+        $this->name  = $name;
+
+        $constants = $class->getConstants();
+        if (!array_key_exists($name, $constants)) {
+            throw new \InvalidArgumentException('Unknown constant: ' . $name);
+        }
+
+        $this->value = $constants[$name];
+    }
+
+    /**
+     * Gets the declaring class.
+     *
+     * @return string
+     */
+    public function getDeclaringClass()
+    {
+        return $this->class;
+    }
+
+    /**
+     * Gets the constant name.
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Gets the value of the constant.
+     *
+     * @return mixed
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Gets the constant's file name.
+     *
+     * Currently returns null, because if it returns a file name the signature
+     * formatter will barf.
+     */
+    public function getFileName()
+    {
+        return;
+        // return $this->class->getFileName();
+    }
+
+    /**
+     * Get the code start line.
+     *
+     * @throws \RuntimeException
+     */
+    public function getStartLine()
+    {
+        throw new \RuntimeException('Not yet implemented because it\'s unclear what I should do here :)');
+    }
+
+    /**
+     * Get the code end line.
+     *
+     * @throws \RuntimeException
+     */
+    public function getEndLine()
+    {
+        return $this->getStartLine();
+    }
+
+    /**
+     * Get the constant's docblock.
+     *
+     * @return false
+     */
+    public function getDocComment()
+    {
+        return false;
+    }
+
+    /**
+     * Export the constant? I don't think this is possible.
+     *
+     * @throws \RuntimeException
+     */
+    public static function export()
+    {
+        throw new \RuntimeException('Not yet implemented because it\'s unclear what I should do here :)');
+    }
+
+    /**
+     * To string.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->getName();
+    }
+}