Enhancement: Extract Config\Fixers as a value object

CHANGELOG.md

@@ -13,6 +13,7 @@ For a full diff see [`5.16.0...main`][5.16.0...main].
 - Extracted `Config\Name` as a value object ([#870]), by [@localheinz]
 - Extracted `Config\PhpVersion` as a value object ([#871]), by [@localheinz]
 - Extracted `Config\Rules` as a value object ([#874]), by [@localheinz]
+- Extracted `Config\Fixers` as a value object ([#883]), by [@localheinz]
 
 ### Changed
 
@@ -1194,6 +1195,7 @@ For a full diff see [`d899e77...1.0.0`][d899e77...1.0.0].
 [#880]: https://github.com/ergebnis/php-cs-fixer-config/pull/880
 [#881]: https://github.com/ergebnis/php-cs-fixer-config/pull/881
 [#882]: https://github.com/ergebnis/php-cs-fixer-config/pull/882
+[#883]: https://github.com/ergebnis/php-cs-fixer-config/pull/883
 
 [@dependabot]: https://github.com/apps/dependabot
 [@linuxjuggler]: https://github.com/linuxjuggler

psalm-baseline.xml

@@ -1,5 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <files psalm-version="5.15.0@5c774aca4746caf3d239d9c8cadb9f882ca29352">
+  <file src="src/Fixers.php">
+    <PropertyTypeCoercion>
+      <code>$value</code>
+    </PropertyTypeCoercion>
+  </file>
   <file src="src/Rules.php">
     <MixedArgumentTypeCoercion>
       <code><![CDATA[\array_merge(
@@ -12,12 +17,6 @@
       <code><![CDATA[array<string, array<string, mixed>|bool>]]></code>
     </MixedReturnTypeCoercion>
   </file>
-  <file src="test/Double/Config/RuleSet/DummyRuleSet.php">
-    <MixedReturnTypeCoercion>
-      <code><![CDATA[$this->customFixers]]></code>
-      <code>iterable</code>
-    </MixedReturnTypeCoercion>
-  </file>
   <file src="test/EndToEnd/RuleSet/AbstractRuleSetTestCase.php">
     <InternalClass>
       <code>Command\FixCommandExitStatusCalculator::EXIT_STATUS_FLAG_HAS_INVALID_CONFIG</code>
@@ -28,6 +27,11 @@
       <code>provideTargetPhpVersionLessThanOrEqualToCurrentPhpVersion</code>
     </PossiblyUnusedMethod>
   </file>
+  <file src="test/Unit/FixersTest.php">
+    <InvalidArgument>
+      <code>$value</code>
+    </InvalidArgument>
+  </file>
   <file src="test/Unit/PhpVersion/MinorTest.php">
     <PossiblyUnusedMethod>
       <code>provideValidValue</code>
@@ -49,9 +53,6 @@
       <code>new FixerFactory()</code>
       <code>registerBuiltInFixers</code>
     </InternalMethod>
-    <InvalidArgument>
-      <code><![CDATA[static::createRuleSet()->customFixers()]]></code>
-    </InvalidArgument>
     <PossiblyUnusedMethod>
       <code>provideValidHeader</code>
     </PossiblyUnusedMethod>

src/Factory.php

@@ -38,7 +38,7 @@ public static function fromRuleSet(
 
         $config = new Config($ruleSet->name()->toString());
 
-        $config->registerCustomFixers($ruleSet->customFixers());
+        $config->registerCustomFixers($ruleSet->customFixers()->toArray());
         $config->setRiskyAllowed(true);
         $config->setRules($ruleSet->rules()->toArray());
 

src/Fixers.php

@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * Copyright (c) 2019-2023 Andreas Möller
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE.md file that was distributed with this source code.
+ *
+ * @see https://github.com/ergebnis/php-cs-fixer-config
+ */
+
+namespace Ergebnis\PhpCsFixer\Config;
+
+use PhpCsFixer\Fixer;
+
+final class Fixers
+{
+    /**
+     * @var list<Fixer\FixerInterface>
+     */
+    private readonly array $value;
+
+    private function __construct(Fixer\FixerInterface ...$value)
+    {
+        $this->value = $value;
+    }
+
+    public static function empty(): self
+    {
+        return new self();
+    }
+
+    public static function fromFixers(Fixer\FixerInterface ...$value): self
+    {
+        return new self(...$value);
+    }
+
+    /**
+     * @param iterable<Fixer\FixerInterface> $iterable
+     *
+     * @throws \InvalidArgumentException
+     */
+    public static function fromIterable(iterable $iterable): self
+    {
+        $value = [];
+
+        foreach ($iterable as $iterated) {
+            if (!$iterated instanceof Fixer\FixerInterface) {
+                throw new \InvalidArgumentException(\sprintf(
+                    'Expected iterable to contain only instances of %s, got %s instead.',
+                    Fixer\FixerInterface::class,
+                    \get_debug_type($iterated),
+                ));
+            }
+
+            $value[] = $iterated;
+        }
+
+        return new self(...$value);
+    }
+
+    /**
+     * @return list<Fixer\FixerInterface>
+     */
+    public function toArray(): array
+    {
+        return $this->value;
+    }
+}

src/RuleSet.php

@@ -13,16 +13,12 @@
 
 namespace Ergebnis\PhpCsFixer\Config;
 
-use PhpCsFixer\Fixer;
-
 interface RuleSet
 {
     /**
      * Returns custom fixers required by this rule set.
-     *
-     * @return iterable<Fixer\FixerInterface>
      */
-    public function customFixers(): iterable;
+    public function customFixers(): Fixers;
 
     /**
      * Returns the name of the rule set.

src/RuleSet/Php53.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -845,9 +846,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php54.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -847,9 +848,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php55.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -856,9 +857,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php56.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -856,9 +857,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php70.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -857,9 +858,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php71.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -859,9 +860,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php72.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -859,9 +860,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php73.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -860,9 +861,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php74.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -863,9 +864,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php80.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -872,9 +873,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name

src/RuleSet/Php81.php

@@ -14,6 +14,7 @@
 namespace Ergebnis\PhpCsFixer\Config\RuleSet;
 
 use Ergebnis\PhpCsFixer\Config\ExplicitRuleSet;
+use Ergebnis\PhpCsFixer\Config\Fixers;
 use Ergebnis\PhpCsFixer\Config\Name;
 use Ergebnis\PhpCsFixer\Config\PhpVersion;
 use Ergebnis\PhpCsFixer\Config\Rules;
@@ -874,9 +875,9 @@ public function __construct(?string $header = null)
         ];
     }
 
-    public function customFixers(): iterable
+    public function customFixers(): Fixers
     {
-        yield from [];
+        return Fixers::empty();
     }
 
     public function name(): Name