Update code style

  - Force PHP7 as minimum required version
  - Use PHP7's type hinting
  - Remove unnecessary phpdoc comments (due to PHP7's type hinting)
  - Add license header to all the files

Author: castarco

src/Actions/Action.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Actions;
 

src/Actions/ExecuteAction.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Actions;
 
@@ -35,13 +43,7 @@ final class ExecuteAction implements Action
     /** @var int */
     private $execCount;
 
-    /**
-     * ExecuteAction constructor.
-     * @param JupyterBroker $broker
-     * @param SocketWrapper $iopubSocket
-     * @param SocketWrapper $shellSocket
-     * @param Shell $shellSoul
-     */
+
     public function __construct(
         JupyterBroker $broker, SocketWrapper $iopubSocket, SocketWrapper $shellSocket, Shell $shellSoul
     )
@@ -62,14 +64,10 @@ public function call(array $header, array $content)
         $this->execCount = isset($content->execution_count) ? $content->execution_count : 0;
         $this->code = $content['code'];
 
-        $closure = $this->getClosure();
-        $closure();
+        ($this->getClosure())();
     }
 
-    /**
-     * @param string $message
-     */
-    public function notifyMessage($message)
+    public function notifyMessage(string $message)
     {
         $this->broker->send($this->shellSocket, 'execute_reply', ['status' => 'ok'], $this->header);
         $this->broker->send($this->iopubSocket, 'stream',  ['name' => 'stdout', 'data' => $message], $this->header);
@@ -82,10 +80,7 @@ public function notifyMessage($message)
         $this->broker->send($this->iopubSocket, 'status', ['execution_state' => 'idle'], $this->header);
     }
 
-    /**
-     * @return callable
-     */
-    private function getClosure()
+    private function getClosure(): callable
     {
         $closure = function () {
             extract($this->shellSoul->getScopeVariables());

src/Actions/HistoryAction.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Actions;
 
@@ -17,11 +25,6 @@ final class HistoryAction implements Action
     private $shellSocket;
 
 
-    /**
-     * ExecuteAction constructor.
-     * @param JupyterBroker $broker
-     * @param SocketWrapper $shellSocket
-     */
     public function __construct(JupyterBroker $broker, SocketWrapper $shellSocket)
     {
         $this->broker = $broker;

src/Actions/KernelInfoAction.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Actions;
 
@@ -19,12 +27,7 @@ final class KernelInfoAction implements Action
     /** @var SocketWrapper */
     private $iopubSocket;
 
-    /**
-     * ExecuteAction constructor.
-     * @param JupyterBroker $broker
-     * @param SocketWrapper $shellSocket
-     * @param SocketWrapper $iopubSocket
-     */
+
     public function __construct(JupyterBroker $broker, SocketWrapper $shellSocket, SocketWrapper $iopubSocket)
     {
         $this->broker = $broker;

src/Actions/ShutdownAction.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Actions;
 

src/ConnectionSettings.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Jupyter-PHP.
  *
- * (c) 2015-2016 Litipk
+ * (c) 2015-2017 Litipk
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -17,7 +17,7 @@ final class ConnectionSettings
     /**
      * @return array[string]mixed
      */
-    public static function get()
+    public static function get(): array
     {
         global $argv;
         if (!isset($argv) || empty($argv)) {
@@ -47,7 +47,7 @@ public static function get()
      * @param null|array $connectionSettings
      * @return array[string]string
      */
-    public static function getConnectionUris(array $connectionSettings = null)
+    public static function getConnectionUris(array $connectionSettings = null): array
     {
         if (null === $connectionSettings) {
             $connectionSettings = self::get();

src/Handlers/HbErrorHandler.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace Litipk\JupyterPHP\Handlers;
 
 

src/Handlers/HbMessagesHandler.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Handlers;
 

src/Handlers/IOPubMessagesHandler.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Handlers;
 

src/Handlers/ShellMessagesHandler.php

@@ -1,5 +1,13 @@
 <?php
 
+/*
+ * This file is part of Jupyter-PHP.
+ *
+ * (c) 2015-2017 Litipk
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Litipk\JupyterPHP\Handlers;
 
@@ -36,13 +44,7 @@ final class ShellMessagesHandler
     /** @var Logger */
     private $logger;
 
-    /**
-     * ShellMessagesHandler constructor.
-     * @param JupyterBroker $broker
-     * @param SocketWrapper $iopubSocket
-     * @param SocketWrapper $shellSocket
-     * @param Logger $logger
-     */
+
     public function __construct(
         JupyterBroker $broker, SocketWrapper $iopubSocket, SocketWrapper $shellSocket, Logger $logger
     )
@@ -63,9 +65,6 @@ public function __construct(
         $this->shellSoul->setOutput( new KernelOutput($this->executeAction, $this->logger->withName('KernelOutput')));
     }
 
-    /**
-     * @param $msg
-     */
     public function __invoke(array $msg)
     {
         list($zmqId, $delim, $hmac, $header, $parentHeader, $metadata, $content) = $msg;