Update and fix php-cs-fixer and code style

.gitignore

@@ -1,3 +1,4 @@
+.php_cs.cache
 build
 composer.lock
 phpunit.xml

.php_cs.dist

@@ -0,0 +1,39 @@
+<?php
+
+return PhpCsFixer\Config::create()
+    ->setRiskyAllowed(true)
+    ->setRules([
+        "@PSR1" => true,
+        "@PSR2" => true,
+        "braces" => [
+            "allow_single_line_closure" => true,
+            "position_after_functions_and_oop_constructs" => "same",
+        ],
+        "array_syntax" => ["syntax" => "short"],
+        "cast_spaces" => true,
+        "combine_consecutive_unsets" => true,
+        "function_to_constant" => true,
+        "no_multiline_whitespace_before_semicolons" => true,
+        "no_unused_imports" => true,
+        "no_useless_else" => true,
+        "no_useless_return" => true,
+        "no_whitespace_before_comma_in_array" => true,
+        "no_whitespace_in_blank_line" => true,
+        "non_printable_character" => true,
+        "normalize_index_brace" => true,
+        "ordered_imports" => true,
+        "php_unit_construct" => true,
+        "php_unit_dedicate_assert" => true,
+        "php_unit_fqcn_annotation" => true,
+        "phpdoc_summary" => true,
+        "phpdoc_types" => true,
+        "psr4" => true,
+        "return_type_declaration" => ["space_before" => "none"],
+        "short_scalar_cast" => true,
+        "single_blank_line_before_namespace" => true,
+    ])
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+            ->in(__DIR__ . "/lib")
+            ->in(__DIR__ . "/test")
+    );

composer.json

@@ -26,7 +26,7 @@
     "require-dev": {
         "amphp/phpunit-util": "dev-master",
         "phpunit/phpunit": "^6",
-        "friendsofphp/php-cs-fixer": "~1.9"
+        "friendsofphp/php-cs-fixer": "^2.3"
     },
     "autoload": {
         "psr-4": {

lib/BufferIterator.php

@@ -55,8 +55,7 @@ class BufferIterator implements \SeekableIterator {
     /**
      * Moves to the next character in the buffer.
      */
-    public function next()
-    {
+    public function next() {
         ++$this->current;
     }
 

lib/ClosedException.php

@@ -2,4 +2,5 @@
 
 namespace Amp\ByteStream;
 
-class ClosedException extends StreamException {}
+class ClosedException extends StreamException {
+}

lib/DuplexStream.php

@@ -2,4 +2,5 @@
 
 namespace Amp\ByteStream;
 
-interface DuplexStream extends ReadableStream, WritableStream {}
+interface DuplexStream extends ReadableStream, WritableStream {
+}

lib/Internal/functions.php

@@ -2,7 +2,8 @@
 
 namespace Amp\ByteStream\Internal;
 
-use Amp\ByteStream\{ ReadableStream, WritableStream };
+use Amp\ByteStream\ReadableStream;
+use Amp\ByteStream\WritableStream;
 
 /**
  * @internal

lib/Message.php

@@ -2,7 +2,11 @@
 
 namespace Amp\ByteStream;
 
-use Amp\{ Deferred, Promise, Stream, StreamIterator, Success };
+use Amp\Deferred;
+use Amp\Promise;
+use Amp\Stream;
+use Amp\StreamIterator;
+use Amp\Success;
 
 /**
  * Creates a buffered message from a Stream. The message can be consumed in chunks using the advance() and getChunk()

lib/Parser.php

@@ -2,7 +2,11 @@
 
 namespace Amp\ByteStream;
 
-use Amp\{ Failure, InvalidYieldError, Loop, Promise, Success };
+use Amp\Failure;
+use Amp\InvalidYieldError;
+use Amp\Loop;
+use Amp\Promise;
+use Amp\Success;
 
 class Parser implements WritableStream {
     const CHUNK_SIZE = 8192;

lib/StreamException.php

@@ -2,4 +2,5 @@
 
 namespace Amp\ByteStream;
 
-class StreamException extends \Exception {}
+class StreamException extends \Exception {
+}

lib/functions.php

@@ -2,7 +2,8 @@
 
 namespace Amp\ByteStream;
 
-use Amp\{ Coroutine, Promise };
+use Amp\Coroutine;
+use Amp\Promise;
 
 // @codeCoverageIgnoreStart
 if (\strlen('…') !== 3) {

test/MessageTest.php

@@ -2,9 +2,11 @@
 
 namespace Amp\ByteStream\Test;
 
-use Amp\{ Emitter, Loop, Success };
 use Amp\ByteStream\Message;
+use Amp\Emitter;
+use Amp\Loop;
 use Amp\PHPUnit\TestCase;
+use Amp\Success;
 
 class MessageTest extends TestCase {
     public function testBufferingAll() {