downgrade pipe

Author: arshidkv12

rules-tests/DowngradePhp85/Rector/StmtsAwareInterface/DowngradePipeOperatorRectorTest/DowngradePipeOperatorRectorTest.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\DowngradePhp85\Rector\StmtsAwareInterface\DowngradePipeOperatorRector;
+
+use Iterator;
+use PHPUnit\Framework\Attributes\DataProvider;
+use Rector\Testing\PHPUnit\AbstractRectorTestCase;
+
+final class DowngradePipeOperatorRectorTest 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/DowngradePhp85/Rector/StmtsAwareInterface/DowngradePipeOperatorRectorTest/Fixture/fixture.php.inc

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+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\DowngradePhp85\Rector\StmtsAwareInterface\DowngradePipeOperatorRector\Fixture;
+
+$value = "hello world";
+$result = $value
+    |> function3(...)
+    |> function2(...)
+    |> function1(...);
+
+?>
+-----
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\DowngradePhp85\Rector\StmtsAwareInterface\DowngradePipeOperatorRector\Fixture;
+
+$value = "hello world";
+$result1 = function3($value);
+$result2 = function2($result1);
+$result = function1($result2);
+
+?>

rules-tests/DowngradePhp85/Rector/StmtsAwareInterface/DowngradePipeOperatorRectorTest/config/configured_rule.php

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+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\DowngradePhp85\Rector\StmtsAwareInterface\DowngradePipeOperatorRector;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->rule(DowngradePipeOperatorRector::class);
+};

rules/DowngradePhp85/Rector/StmtsAwareInterface/DowngradePipeOperatorRector.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Rector\DowngradePhp85\Rector\StmtsAwareInterface;
+
+use PhpParser\Node;
+use PhpParser\Node\Expr\BinaryOp\Pipe;
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Expr\Variable;
+use PhpParser\Node\Expr\Closure;
+use PhpParser\Node\Expr\ArrowFunction;
+use PhpParser\Node\Stmt\Expression;
+use PhpParser\Node\Stmt\Return_;
+use PhpParser\NodeTraverser;
+use Rector\Rector\AbstractRector;
+use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
+use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
+
+/**
+ * @see https://wiki.php.net/rfc/pipe-operator-v3
+ * @see \Rector\Tests\DowngradePhp85\Rector\StmtsAwareInterface\DowngradePipeOperatorRector\DowngradePipeOperatorRectorTest
+ */
+final class DowngradePipeOperatorRector extends AbstractRector
+{
+    /**
+     * @var int
+     */
+    private $tempVariableCounter = 0;
+
+    public function getRuleDefinition(): RuleDefinition
+    {
+        return new RuleDefinition(
+            'Downgrade pipe operator |> to PHP < 8.1 compatible code',
+            [
+                new CodeSample(
+                    <<<'CODE_SAMPLE'
+$value = "hello world";
+$result = $value
+    |> function3(...)
+    |> function2(...)
+    |> function1(...);
+CODE_SAMPLE
+                    ,
+                    <<<'CODE_SAMPLE'
+$value = "hello world";
+$result1 = function3($value);
+$result2 = function2($result1);
+$result = function1($result2);
+CODE_SAMPLE
+                ),
+                new CodeSample(
+                    <<<'CODE_SAMPLE'
+$result = strtoupper("Hello World") |> trim(...);
+CODE_SAMPLE
+                    ,
+                    <<<'CODE_SAMPLE'
+$result = trim(strtoupper("Hello World"));
+CODE_SAMPLE
+                ),
+            ]
+        );
+    }
+
+    public function getNodeTypes(): array
+    {
+        return [Pipe::class];
+    }
+
+    public function refactor(Node $node): ?Node
+    {
+        if (!$node instanceof Pipe) {
+            return null;
+        }
+
+        return $this->processPipeOperation($node);
+    }
+
+    private function processPipeOperation(Pipe $pipe): void
+    {
+       
+    }
+
+   
+}