added PHPStan

.github/workflows/main.yaml

@@ -68,6 +68,62 @@ jobs:
       - name: "Coding Standard"
         run: "make cs"
 
+  static-analysis:
+    name: "Static analysis"
+    runs-on: "${{ matrix.operating-system }}"
+
+    strategy:
+      matrix:
+        php-version: ["7.4"]
+        operating-system: ["ubuntu-latest"]
+      fail-fast: false
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v2"
+
+      - name: "Setup PHP cache environment"
+        id: "extcache"
+        uses: "shivammathur/cache-extensions@v1"
+        with:
+          php-version: "${{ matrix.php-version }}"
+          extensions: "${{ env.extensions }}"
+          key: "${{ env.cache-version }}"
+
+      - name: "Cache PHP extensions"
+        uses: "actions/cache@v2"
+        with:
+          path: "${{ steps.extcache.outputs.dir }}"
+          key: "${{ steps.extcache.outputs.key }}"
+          restore-keys: "${{ steps.extcache.outputs.key }}"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          php-version: "${{ matrix.php-version }}"
+          extensions: "${{ env.extensions }}"
+          tools: "composer:${{ env.composer-version }} "
+
+      - name: "Setup problem matchers for PHP"
+        run: 'echo "::add-matcher::${{ runner.tool_cache }}/php.json"'
+
+      - name: "Get Composer cache directory"
+        id: "composercache"
+        run: 'echo "::set-output name=dir::$(composer config cache-files-dir)"'
+
+      - name: "Cache PHP dependencies"
+        uses: "actions/cache@v2"
+        with:
+          path: "${{ steps.composercache.outputs.dir }}"
+          key: "${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}"
+          restore-keys: "${{ runner.os }}-composer-"
+
+      - name: "Install dependencies"
+        run: "${{ env.composer-install }}"
+
+      - name: "PHPStan"
+        run: "make phpstan"
+
   tests:
     name: "Tests"
     runs-on: "${{ matrix.operating-system }}"

Makefile

@@ -11,6 +11,9 @@ cs:
 csf:
 	vendor/bin/codefixer src tests
 
+phpstan:
+	vendor/bin/phpstan analyse -l max -c phpstan.neon src
+
 tests:
 	vendor/bin/tester -s -p php --colors 1 -C tests/cases
 

composer.json

@@ -37,7 +37,11 @@
   "require-dev": {
     "mockery/mockery": "^1.3",
     "ninjify/nunjuck": "^0.3",
-    "ninjify/qa": "^0.12"
+    "ninjify/qa": "^0.12",
+    "phpstan/phpstan": "^0.12",
+    "phpstan/phpstan-deprecation-rules": "^0.12",
+    "phpstan/phpstan-nette": "^0.12",
+    "phpstan/phpstan-strict-rules": "^0.12"
   },
   "autoload": {
     "psr-4": {

phpstan.neon

@@ -0,0 +1,5 @@
+includes:
+	- vendor/phpstan/phpstan-deprecation-rules/rules.neon
+	- vendor/phpstan/phpstan-nette/extension.neon
+	- vendor/phpstan/phpstan-nette/rules.neon
+	- vendor/phpstan/phpstan-strict-rules/rules.neon