Merge pull request #374 from GautierDele/5.x

✨ method parameter default value rendering

src/DocBlock/Tags/Factory/MethodFactory.php

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

src/DocBlock/Tags/Factory/MethodParameterFactory.php

@@ -0,0 +1,95 @@
+<?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;
+
+/**
+ * @internal This class is not part of the BC promise of this library.
+ */
+final class MethodParameterFactory
+{
+    /**
+     * Formats the given default value to a string-able mixin
+     *
+     * @param mixed $defaultValue
+     * @return string
+     */
+    public function format($defaultValue): string
+    {
+        if (method_exists($this, $method = 'format'.ucfirst(gettype($defaultValue)))) {
+            return ' = ' . $this->{$method}($defaultValue);
+        }
+        return '';
+    }
+
+    private function formatDouble(float $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    /**
+     * @param mixed $defaultValue
+     * @return string
+     */
+    private function formatNull($defaultValue): string
+    {
+        return 'null';
+    }
+
+    private function formatInteger(int $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    private function formatString(string $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    private function formatBoolean(bool $defaultValue): string
+    {
+        return var_export($defaultValue, true);
+    }
+
+    /**
+     * @param array<array|null|int|float|bool|string|object> $defaultValue
+     * @return string
+     */
+    private 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;
+    }
+
+    private function formatObject(object $defaultValue): string
+    {
+        return 'new '. get_class($defaultValue). '()';
+    }
+}

src/DocBlock/Tags/Method.php

@@ -261,10 +261,7 @@ final class Method extends BaseTag implements Factory\StaticMethod
     {
         $arguments = [];
         foreach ($this->parameters as $parameter) {
-            $arguments[] = $parameter->getType() . ' ' .
-                ($parameter->isReference() ? '&' : '') .
-                ($parameter->isVariadic() ? '...' : '') .
-                '$' . $parameter->getName();
+            $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 +25,22 @@ final class MethodParameter
 
     private string $name;
 
-    private ?string $defaultValue = null;
+    /**
+     * @var mixed
+     */
+    private $defaultValue;
 
+    public const NO_DEFAULT_VALUE = '__NO_VALUE__';
+
+    /**
+     * @param mixed $defaultValue
+     */
     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;
@@ -62,6 +71,21 @@ final class MethodParameter
 
     public function getDefaultValue(): ?string
     {
-        return $this->defaultValue;
+        if ($this->defaultValue === static::NO_DEFAULT_VALUE) {
+            return null;
+        }
+        if (is_array($this->defaultValue)) {
+            return implode(',', $this->defaultValue);
+        }
+        return (string) $this->defaultValue;
+    }
+
+    public function __toString(): string
+    {
+        return $this->getType() . ' ' .
+            ($this->isReference() ? '&' : '') .
+            ($this->isVariadic() ? '...' : '') .
+            '$' . $this->getName() .
+            ($this->defaultValue !== self::NO_DEFAULT_VALUE ? (new MethodParameterFactory)->format($this->defaultValue) : '');
     }
 }