Merge pull request #35 from inpsyde/modernization

This merge will:

Modernize the codebase:
- Move from PSR-2 or PSR-12
- Use latest PHPCS
- Use latest WPCS
- Use latest VIP CS now in separate repo from WPCS

Cleanup:
- Remove custom and 3rd party sniffs that are duplicated
- Remove PHPCSAliases.php that's no more necessary
- Remove arg and config from ruleset.xml

Improve:
- Make customization of ElementNameMinimalLength sniff
- Improve detection of hook callback

Overall, merging this PR will fix:
- #21
- #25
- #26 (some outdated packages will be there because of PHPUnit 6 that we can't upgrade due to PHP 7.0 support)
- #29
- #33

Inpsyde/PhpcsHelpers.php

@@ -15,6 +15,7 @@
 
 namespace Inpsyde;
 
+use PHP_CodeSniffer\Config;
 use PHP_CodeSniffer\Exceptions\RuntimeException as CodeSnifferRuntimeException;
 use PHP_CodeSniffer\Files\File;
 use PHP_CodeSniffer\Util\Tokens;
@@ -330,7 +331,7 @@ public static function isHookClosure(
         }
 
         $lookForComma = $file->findPrevious(
-            [T_WHITESPACE],
+            [T_WHITESPACE, T_STATIC],
             $closurePosition - 1,
             null,
             true,
@@ -614,4 +615,19 @@ public static function findNamespace(File $file, int $position): array
 
         return [$namespacePos, $namespace];
     }
+
+    /**
+     * @return string
+     */
+    public static function minPhpTestVersion(): string
+    {
+        $testVersion = trim(Config::getConfigData('testVersion') ?: '');
+        if (!$testVersion) {
+            return '';
+        }
+
+        preg_match('`^(\d+\.\d+)(?:\s*-\s*(?:\d+\.\d+)?)?$`', $testVersion, $matches);
+
+        return $matches[1] ?? '';
+    }
 }

Inpsyde/Sniffs/CodeQuality/ArgumentTypeDeclarationSniff.php

@@ -1,4 +1,5 @@
-<?php declare(strict_types=1); # -*- coding: utf-8 -*-
+<?php
+
 /*
  * This file is part of the php-coding-standards package.
  *
@@ -13,6 +14,8 @@
  * released under MIT license.
  */
 
+declare(strict_types=1);
+
 namespace Inpsyde\Sniffs\CodeQuality;
 
 use Inpsyde\PhpcsHelpers;
@@ -46,7 +49,8 @@ public function register()
      */
     public function process(File $file, $position)
     {
-        if (PhpcsHelpers::functionIsArrayAccess($file, $position)
+        if (
+            PhpcsHelpers::functionIsArrayAccess($file, $position)
             || PhpcsHelpers::isHookClosure($file, $position)
             || PhpcsHelpers::isHookFunction($file, $position)
             || (

Inpsyde/Sniffs/CodeQuality/ConstantVisibilitySniff.php

@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of the php-coding-standards package.
+ *
+ * (c) Inpsyde GmbH
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Inpsyde\Sniffs\CodeQuality;
+
+use Inpsyde\PhpcsHelpers;
+use PHP_CodeSniffer\Files\File;
+use PHP_CodeSniffer\Standards\PSR12\Sniffs\Properties as PSR12;
+
+/**
+ * @package php-coding-standards
+ * @license http://opensource.org/licenses/MIT MIT
+ */
+final class ConstantVisibilitySniff extends PSR12\ConstantVisibilitySniff
+{
+    /**
+     * @param File $phpcsFile
+     * @param int $stackPtr
+     * @return void
+     */
+    public function process(File $phpcsFile, $stackPtr)
+    {
+        $min = PhpcsHelpers::minPhpTestVersion();
+        if ($min && version_compare($min, '7.1', '<')) {
+            return;
+        }
+
+        parent::process($phpcsFile, $stackPtr);
+    }
+}

Inpsyde/Sniffs/CodeQuality/DisallowShortOpenTagSniff.php

@@ -1,4 +1,5 @@
-<?php declare(strict_types=1); # -*- coding: utf-8 -*-
+<?php
+
 /*
  * This file is part of the php-coding-standards package.
  *
@@ -8,6 +9,8 @@
  * file that was distributed with this source code.
  */
 
+declare(strict_types=1);
+
 namespace Inpsyde\Sniffs\CodeQuality;
 
 use PHP_CodeSniffer\Standards\Generic\Sniffs\PHP as Generic;
@@ -16,7 +19,7 @@
  * @package php-coding-standards
  * @license http://opensource.org/licenses/MIT MIT
  */
-final class DisallowShortOpenTagSniff extends Generic\DisallowShortOpenTagSniff
+class DisallowShortOpenTagSniff extends Generic\DisallowShortOpenTagSniff
 {
     /**
      * @return int[]