Use psalm instead of phpstan

Author: micheh

.github/workflows/main.yml

@@ -8,26 +8,29 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: shivammathur/setup-php@v1
+      - uses: shivammathur/setup-php@2.3.1
         with:
           php-version: 7.3
           coverage: pcov
 
+      - name: Setup problem matcher for PHPUnit
+        run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
+
       - name: Install dependencies
         run: composer install
 
       - name: Run PHPUnit
         run: vendor/bin/phpunit --coverage-clover=coverage.xml
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v1.0.7
 
   phpcs:
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
-      - uses: shivammathur/setup-php@v1
+      - uses: shivammathur/setup-php@2.3.1
         with:
           php-version: 7.3
           coverage: none
@@ -39,19 +42,18 @@ jobs:
       - name: Run PHP Codesniffer
         run: vendor/bin/phpcs --report=checkstyle -q | cs2pr --graceful-warnings
 
-  phpstan:
+  psalm:
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
-      - uses: shivammathur/setup-php@v1
+      - uses: shivammathur/setup-php@2.3.1
         with:
           php-version: 7.3
           coverage: none
-          tools: cs2pr
 
       - name: Install dependencies
         run: composer install
 
-      - name: Run PHPStan
-        run: vendor/bin/phpstan analyse --error-format=checkstyle | cs2pr
+      - name: Run Psalm
+        run: vendor/bin/psalm --output-format=github

composer.json

@@ -14,10 +14,9 @@
         "ext-json": "*"
     },
     "require-dev": {
+        "phpunit/phpunit": "^9.0",
         "squizlabs/php_codesniffer": "^3.5",
-        "phpstan/phpstan": "^0.12.25",
-        "phpstan/phpstan-deprecation-rules": "^0.12.3",
-        "phpunit/phpunit": "^9.1"
+        "vimeo/psalm": "^3.12"
     },
     "autoload": {
         "psr-4": {
@@ -28,5 +27,8 @@
         "psr-4": {
             "MichehTest\\PhpCodeSniffer\\": "tests/"
         }
+    },
+    "config": {
+        "sort-packages": true
     }
 }

phpstan.neon.dist

@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<psalm xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+    autoloader="vendor/squizlabs/php_codesniffer/autoload.php"
+    errorLevel="2"
+    resolveFromConfigFile="true"
+>
+    <projectFiles>
+        <directory name="src" />
+
+        <ignoreFiles>
+            <directory name="vendor" />
+        </ignoreFiles>
+    </projectFiles>
+</psalm>

psalm.xml.dist

@@ -21,8 +21,7 @@
 class Gitlab implements Report
 {
     /**
-     * @param File $phpcsFile
-     * @inheritDoc
+     * @psalm-suppress ImplementedParamTypeMismatch PHP_CodeSniffer has a wrong docblock
      */
     public function generateFileReport($report, File $phpcsFile, $showSources = false, $width = 80): bool
     {
@@ -55,9 +54,6 @@ public function generateFileReport($report, File $phpcsFile, $showSources = fals
         return $hasOutput;
     }
 
-    /**
-     * @inheritDoc
-     */
     public function generate(
         $cachedData,
         $totalFiles,