TTWEBTAKEN-85: Add Twig linter.

composer.json

@@ -30,10 +30,12 @@
         "drupal/core": "^8.8 || ^9.0",
         "drupal/drupal-extension": "^4.1",
         "ergebnis/composer-normalize": "^2.11",
+        "friendsoftwig/twigcs": "^4.0",
         "irstea/phpcpd-shim": "^6.0",
         "irstea/phpmd-shim": "^2.9",
         "mglaman/phpstan-drupal": "^0.12.6",
         "nette/neon": "^3.2",
+        "nielsdeblaauw/twigcs-a11y": "^2.0",
         "phpro/grumphp-shim": "^1.1",
         "phpspec/prophecy": "^1.10",
         "phpstan/phpstan-deprecation-rules": "^0.12.5",

configs/grumphp-extension.yml

@@ -24,6 +24,7 @@ grumphp:
         - phpcs
         - phpmd
         - phpstan
+        - twigcs
         - yamllint
     tests:
       tasks:
@@ -121,6 +122,13 @@ grumphp:
       end_point: ~
       timeout: ~
       run_always: false
+    twigcs:
+      path: 'templates'
+      severity: 'warning'
+      ruleset: 'FriendsOfTwig\Twigcs\Ruleset\Official'
+      triggered_by:
+        - twig
+      exclude: []
     yamllint:
       ignore_patterns:
         - node_modules/

configs/grumphp-site.yml

@@ -24,6 +24,7 @@ grumphp:
         - phpcs
         - phpmd
         - phpstan
+        - twigcs
         - yamllint
     tests:
       tasks:
@@ -139,6 +140,14 @@ grumphp:
       end_point: ~
       timeout: ~
       run_always: false
+    twigcs:
+      path: 'web/themes/custom'
+      severity: 'warning'
+      ruleset: 'FriendsOfTwig\Twigcs\Ruleset\Official'
+      triggered_by:
+        - twig
+      exclude:
+        - vendor
     yamllint:
       whitelist_patterns:
         - "#^(\\.[^/]+/)?[^/]+\\.yml$#"

src/Digipolisgent/QA/Drupal/Twigcs/Ruleset/Twig.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Digipolisgent\QA\Drupal\Twigcs\Ruleset;
+
+use FriendsOfTwig\Twigcs\Ruleset\Official;
+use FriendsOfTwig\Twigcs\Ruleset\RulesetInterface;
+use NdB\TwigCSA11Y\Ruleset;
+
+/**
+ * Twig ruleset.
+ *
+ * Combines official and wcag rulesets.
+ */
+class Twig implements RulesetInterface
+{
+    private $twigMajorVersion;
+
+    public function __construct(int $twigMajorVersion)
+    {
+        $this->twigMajorVersion = $twigMajorVersion;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getRules()
+    {
+        $official = new Official($this->twigMajorVersion);
+        $wcag = new Ruleset($this->twigMajorVersion);
+
+        return array_merge($official->getRules(), $wcag->getRules());
+    }
+}