Add check by PHPStan

.github/workflows/automated_testing.yml

@@ -21,6 +21,34 @@ jobs:
       - name: Validate composer.json and composer.lock
         run: composer validate --strict
 
+  phpstan:
+    name: Static analyze with PHPStan
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.2
+
+      - uses: actions/checkout@v4
+
+      - name: Cache Composer packages
+        id: composer-cache
+        uses: actions/cache@v4
+        with:
+          path: vendor
+          key: "${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}"
+          restore-keys: |
+            ${{ runner.os }}-php-
+
+      - name: Install dependencies
+        uses: ramsey/composer-install@v3
+
+      - name: Static analyze with PHPStan
+        run: |
+          composer run phpstan-clear && \
+          composer run phpstan-analyse -- --no-progress
+
   phpunit:
     name: 'Tests: Unit'
     runs-on: ubuntu-latest

composer.json

@@ -10,6 +10,9 @@
         "friendsofphp/php-cs-fixer": "^3.50"
     },
     "require-dev": {
+        "phpstan/extension-installer": "^1.3",
+        "phpstan/phpstan": "^1.11",
+        "phpstan/phpstan-phpunit": "^1.4",
         "phpunit/phpunit": "^11.1"
     },
     "autoload": {
@@ -25,7 +28,24 @@
             "Aeliot\\PhpCsFixerBaseline\\Test\\": "tests/"
         }
     },
+    "config": {
+        "allow-plugins": {
+            "composer/*": true,
+            "phpstan/extension-installer": true
+        },
+        "sort-packages": true
+    },
     "scripts": {
+        "phpstan": [
+            "@phpstan-clear",
+            "@phpstan-analyse"
+        ],
+        "phpstan-analyse": "vendor/bin/phpstan analyse --memory-limit=-1",
+        "phpstan-baseline": [
+            "@phpstan-clear",
+            "@phpstan-analyse --generate-baseline phpstan-baseline.neon --allow-empty-baseline"
+        ],
+        "phpstan-clear": "vendor/bin/phpstan clear-result-cache",
         "phpunit": "vendor/bin/phpunit"
     }
 }

phpstan-baseline.neon

@@ -0,0 +1,26 @@
+parameters:
+	ignoreErrors:
+		-
+			message: "#^Parameter \\#1 \\$configHash of method Aeliot\\\\PhpCsFixerBaseline\\\\Model\\\\BaselineContent\\:\\:setConfigHash\\(\\) expects string, int given\\.$#"
+			count: 1
+			path: src/Service/Builder.php
+
+		-
+			message: "#^Method Aeliot\\\\PhpCsFixerBaseline\\\\Service\\\\FileCacheCalculator\\:\\:calculate\\(\\) should return string but returns int\\.$#"
+			count: 1
+			path: src/Service/FileCacheCalculator.php
+
+		-
+			message: "#^Negated boolean expression is always true\\.$#"
+			count: 1
+			path: src/Service/FilterFactory.php
+
+		-
+			message: "#^Result of \\|\\| is always true\\.$#"
+			count: 1
+			path: src/Service/FilterFactory.php
+
+		-
+			message: "#^Strict comparison using \\=\\=\\= between string\\|null and int will always evaluate to false\\.$#"
+			count: 1
+			path: src/Service/FilterFactory.php

phpstan.neon.dist

@@ -0,0 +1,12 @@
+includes:
+	- phpstan-baseline.neon
+
+parameters:
+    level: 6
+    reportUnmatchedIgnoredErrors: false
+
+    paths:
+        - src/
+
+    parallel:
+        processTimeout: 300.0