♻️ cover more default value cases

src/DocBlock/Tags/Factory/MethodFactory.php

@@ -57,7 +57,7 @@ final class MethodFactory implements PHPStanFactory
                         ),
                         $param->isReference,
                         $param->isVariadic,
-                        (string) $param->defaultValue
+                        $param->defaultValue
                     );
                 },
                 $tagValue->parameters

src/DocBlock/Tags/Factory/MethodParameterFactory.php

@@ -0,0 +1,81 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link      http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\DocBlock\Tags\Factory;
+
+use phpDocumentor\Reflection\DocBlock\Tags\Formatter;
+use function str_repeat;
+use function strlen;
+
+class MethodParameterFactory
+{
+    /**
+     * Formats the given default value to a string-able mixin
+     */
+    public function format($defaultValue): string
+    {
+        if (method_exists($this, $method = 'format'.ucfirst(gettype($defaultValue)))) {
+            return ' = ' . $this->{$method}($defaultValue);
+        }
+        return '';
+    }
+
+    protected function formatDouble(float $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    protected function formatNull($defaultValue): string
+    {
+        return 'null';
+    }
+
+    protected function formatInteger(int $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    protected function formatString(string $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    protected function formatBoolean(bool $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    protected function formatArray(array $defaultValue): string
+    {
+        $formatedValue = '[';
+
+        foreach ($defaultValue as $key => $value) {
+            if (method_exists($this, $method = 'format'.ucfirst(gettype($value)))) {
+                $formatedValue .= $this->{$method}($value);
+
+                if ($key !== array_key_last($defaultValue)) {
+                    $formatedValue .= ',';
+                }
+            }
+        }
+
+        $formatedValue .= ']';
+
+        return $formatedValue;
+    }
+
+    protected function formatObject(object $defaultValue): string
+    {
+        return 'new '. get_class($defaultValue). '()';
+    }
+}

src/DocBlock/Tags/Method.php

@@ -261,18 +261,7 @@ final class Method extends BaseTag implements Factory\StaticMethod
     {
         $arguments = [];
         foreach ($this->parameters as $parameter) {
-            $parameterDefaultValueStr = null;
-            if ($parameter->getDefaultValue() !== null) {
-                $parameterDefaultValueStr = $parameter->getDefaultValue();
-                settype($parameterDefaultValueStr, (string)$parameter->getType());
-                $parameterDefaultValueStr =  sprintf(' = %s', var_export($parameterDefaultValueStr, true));
-            }
-
-            $arguments[] = $parameter->getType() . ' ' .
-                ($parameter->isReference() ? '&' : '') .
-                ($parameter->isVariadic() ? '...' : '') .
-                '$' . $parameter->getName() .
-                ($parameterDefaultValueStr ?? '');
+            $arguments[] = (string) $parameter;
         }
 
         $argumentStr = '(' . implode(', ', $arguments) . ')';

src/DocBlock/Tags/MethodParameter.php

@@ -12,6 +12,7 @@ declare(strict_types=1);
 
 namespace phpDocumentor\Reflection\DocBlock\Tags;
 
+use phpDocumentor\Reflection\DocBlock\Tags\Factory\MethodParameterFactory;
 use phpDocumentor\Reflection\Type;
 
 final class MethodParameter
@@ -24,14 +25,16 @@ final class MethodParameter
 
     private string $name;
 
-    private ?string $defaultValue = null;
+    private mixed $defaultValue;
+
+    private const NO_DEFAULT_VALUE = '__NO_VALUE__';
 
     public function __construct(
         string $name,
         Type $type,
         bool $isReference = false,
         bool $isVariadic = false,
-        ?string $defaultValue = null
+        $defaultValue = self::NO_DEFAULT_VALUE
     ) {
         $this->type = $type;
         $this->isReference = $isReference;
@@ -60,8 +63,17 @@ final class MethodParameter
         return $this->isVariadic;
     }
 
-    public function getDefaultValue(): ?string
+    public function getDefaultValue(): mixed
     {
         return $this->defaultValue;
     }
+
+    public function __toString(): string
+    {
+        return $this->getType() . ' ' .
+            ($this->isReference() ? '&' : '') .
+            ($this->isVariadic() ? '...' : '') .
+            '$' . $this->getName() .
+            ($this->getDefaultValue() !== self::NO_DEFAULT_VALUE ? (new MethodParameterFactory)->format($this->getDefaultValue()) : '');
+    }
 }