[CodingStyle] FunctionLikeToFirstClassCallableRector

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/fixture.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function ($foo)
+{
+    return FooBar::foo($foo);
+};
+
+fn ($foo) => FooBar::foo($foo);
+
+$bar = null;
+
+fn ($foo) => $bar->foo($foo);
+
+function ($foo) use ($bar)
+{
+    return $bar->foo($foo);
+};
+
+function ($foo, $bar, $ray)
+{
+    return FooBar::foo($foo, $bar);
+};
+
+fn ($foo, $bar, $ray) => FooBar::foo($foo);
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+FooBar::foo(...);
+
+FooBar::foo(...);
+
+$bar = null;
+
+$bar->foo(...);
+
+$bar->foo(...);
+
+FooBar::foo(...);
+
+FooBar::foo(...);
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/skip_byref_usage.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function (&$foo)
+{
+    return Foo::foo($foo);
+};
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/skip_call_dependency_on_arg.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function ($foo)
+{
+    return $foo->foo();
+};
+
+function ($foo)
+{
+    return (new $foo)->foo();
+};
+
+fn ($foo) => $foo->foo();
+
+function ($foo)
+{
+    return $foo::foo();
+};
+
+function ($foo)
+{
+    return ($foo . '\\Foo')::foo();
+};
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/skip_functions_with_no_return.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function ($foo)
+{
+    FooBar::foo($foo);
+};
+
+$bar = null;
+
+function ($foo) use ($bar)
+{
+    $bar->foo($foo);
+};
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/skip_functions_with_too_many_statements.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function ($foo)
+{
+    $foo = 1;
+    return FooBar::foo($foo);
+};
+
+fn ($foo) => FooBar::foo($foo) && true;
+
+$bar = null;
+
+function ($foo) use ($bar)
+{
+    $foo = 1;
+    return $bar->foo($foo);
+};
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/skip_functions_without_calls.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function ($foo)
+{
+    return $foo;
+};
+
+fn ($foo) => $foo;
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/skip_mismatched_args_and_params.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function ($foo, $bar)
+{
+    return FooBar::foo($bar, $foo);
+};
+
+fn ($foo, $bar) => FooBar::foo($bar, $foo);
+
+$bar = null;
+
+fn ($foo, $bar) => $bar->foo($bar, $foo);
+
+function ($foo, $barFoo) use ($bar)
+{
+    return $bar->foo($barFoo, $foo);
+};
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/skip_named_args.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+$bar = null;
+
+function ($foo) use ($bar)
+{
+    return $bar->foo(foo: $foo);
+};
+
+function ($foo)
+{
+    return Foo::foo(foo: $foo);
+};
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/Fixture/supports_varadic_and_unpack.php.inc

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+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+function (...$foo)
+{
+    return FooBar::foo(...$foo);
+};
+
+fn (...$foo) => FooBar::foo(...$foo);
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector\Fixture;
+
+FooBar::foo(...);
+
+FooBar::foo(...);
+
+?>

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/FunctionLikeToFirstClassCallableRectorTest.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector;
+
+use Iterator;
+use PHPUnit\Framework\Attributes\DataProvider;
+use Rector\Testing\PHPUnit\AbstractRectorTestCase;
+
+final class FunctionLikeToFirstClassCallableRectorTest extends AbstractRectorTestCase
+{
+    #[DataProvider('provideData')]
+    public function test(string $filePath): void
+    {
+        $this->doTestFile($filePath);
+    }
+
+    public static function provideData(): Iterator
+    {
+        return self::yieldFilesFromDirectory(__DIR__ . '/Fixture');
+    }
+
+    public function provideConfigFilePath(): string
+    {
+        return __DIR__ . '/config/configured_rule.php';
+    }
+}

rules-tests/CodingStyle/Rector/FunctionLike/FunctionLikeToFirstClassCallableRector/config/configured_rule.php

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+<?php
+
+declare(strict_types=1);
+
+use Rector\CodingStyle\Rector\FunctionLike\FunctionLikeToFirstClassCallableRector;
+use Rector\Config\RectorConfig;
+
+return RectorConfig::configure()
+    ->withRules([FunctionLikeToFirstClassCallableRector::class]);