Add support for readonly constructor properties

file.php

@@ -429,6 +429,7 @@ public function &get_functions() {
                                 case T_PUBLIC:
                                 case T_PROTECTED:
                                 case T_PRIVATE:
+                                case T_READONLY:
                                     continue 2;
                                 case T_VARIABLE:
                                     // The variale name, adding in the vardiadic if required.

tests/fixtures/phpdoc_constructor_property_promotion_readonly.php

@@ -0,0 +1,47 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace local_moodlecheck;
+
+use cm_info;
+use stdClass;
+
+/**
+ * A fixture to verify phpdoc tags used in constructor property promotion.
+ *
+ * @package   local_moodlecheck
+ * @copyright 2023 Andrew Lyons <[email protected]>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class constructor_property_promotion {
+    /**
+     * An example of a constructor using constructor property promotion.
+     *
+     * @param stdClass|cm_info $cm The course module data
+     * @param string $name The name
+     * @param int|float $size The size
+     * @param null|string $description The description
+     * @param ?string $content The content
+     */
+    public function __construct(
+        private stdClass|cm_info $cm,
+        public readonly string $name,
+        public readonly float|int $size,
+        protected readonly?string $description = null,
+        protected ?string $content = null
+    ) {
+    }
+}

tests/moodlecheck_rules_test.php

@@ -223,6 +223,31 @@ public function test_phpdoc_constructor_property_promotion(): void {
         $this->assertStringNotContainsString('constructor_property_promotion::__construct has incomplete parameters list', $result);
     }
 
+    /**
+     * Verify that constructor property promotion supports readonly properties.
+     *
+     * @covers ::local_moodlecheck_functionarguments
+     * @requires PHP >= 8.1
+     */
+    public function test_phpdoc_constructor_property_promotion_readonly(): void {
+        global $PAGE;
+        $output = $PAGE->get_renderer('local_moodlecheck');
+        $path = new local_moodlecheck_path('local/moodlecheck/tests/fixtures/phpdoc_constructor_property_promotion_readonly.php ', null);
+        $result = $output->display_path($path, 'xml');
+
+        // Convert results to XML Objext.
+        $xmlresult = new \DOMDocument();
+        $xmlresult->loadXML($result);
+
+        // Let's verify we have received a xml with file top element and 8 children.
+        $xpath = new \DOMXpath($xmlresult);
+        $found = $xpath->query("//file/error");
+
+        $this->assertCount(1, $found);
+        $this->assertStringContainsString('packagevalid', $result);
+        $this->assertStringNotContainsString('constructor_property_promotion::__construct has incomplete parameters list', $result);
+    }
+
     /**
      * Verify that constructor property promotion is supported.
      *