[DeadCode] Add RemoveDeadTryCatchRector

config/set/dead-code/dead-code.yaml

@@ -31,3 +31,5 @@ services:
     Rector\DeadCode\Rector\If_\SimplifyIfElseWithSameContentRector: null
     Rector\DeadCode\Rector\Ternary\TernaryToBooleanOrFalseToBooleanAndRector: null
     Rector\PHPUnit\Rector\ClassMethod\RemoveEmptyTestMethodRector: null
+    Rector\DeadCode\Rector\TryCatch\RemoveDeadTryCatchRector: null
+

docs/AllRectorsOverview.md

@@ -1,4 +1,4 @@
-# All 449 Rectors Overview
+# All 450 Rectors Overview
 
 - [Projects](#projects)
 - [General](#general)
@@ -2464,6 +2464,30 @@ Removes dead code statements
 
 <br>
 
+### `RemoveDeadTryCatchRector`
+
+- class: `Rector\DeadCode\Rector\TryCatch\RemoveDeadTryCatchRector`
+
+Remove dead try/catch
+
+```diff
+ class SomeClass
+ {
+     public function run()
+     {
+-        try {
+-            // some code
+-        }
+-        catch (Throwable $throwable) {
+-            throw $throwable;
+-        }
++        // some code
+     }
+ }
+```
+
+<br>
+
 ### `RemoveDeadZeroAndOneOperationRector`
 
 - class: `Rector\DeadCode\Rector\Plus\RemoveDeadZeroAndOneOperationRector`

packages/rector-generator/src/Configuration/ConfigurationFactory.php

@@ -57,8 +57,10 @@ public function createFromRectorRecipe(array $rectorRecipe): Configuration
             $rectorRecipe['description'],
             $this->normalizeCode($rectorRecipe['code_before']),
             $this->normalizeCode($rectorRecipe['code_after']),
-            $this->normalizeCode($rectorRecipe['extra_file_content'] ?? ''),
-            $rectorRecipe['extra_file_name'],
+            isset($rectorRecipe['extra_file_content']) ? $this->normalizeCode(
+                $rectorRecipe['extra_file_content']
+            ) : null,
+            $rectorRecipe['extra_file_name'] ?? null,
             array_filter((array) $rectorRecipe['source']),
             $this->configResolver->resolveSetConfig($rectorRecipe['set']),
             $this->detectPhpSnippet($rectorRecipe['code_before'])

packages/rector-generator/src/TemplateVariablesFactory.php

@@ -10,6 +10,7 @@
 use PhpParser\Node\Expr\ClassConstFetch;
 use PhpParser\Node\Name\FullyQualified;
 use Rector\Core\PhpParser\Printer\BetterStandardPrinter;
+use Rector\Core\Util\RectorStrings;
 use Rector\RectorGenerator\ValueObject\Configuration;
 
 final class TemplateVariablesFactory
@@ -31,7 +32,7 @@ public function createFromConfiguration(Configuration $configuration): array
     {
         $data = [
             '_Package_' => $configuration->getPackage(),
-            '_package_' => strtolower($configuration->getPackage()),
+            '_package_' => RectorStrings::camelCaseToDashes($configuration->getPackage()),
             '_Category_' => $configuration->getCategory(),
             '_Description_' => $configuration->getDescription(),
             '_Name_' => $configuration->getName(),

rules/dead-code/src/Rector/TryCatch/RemoveDeadTryCatchRector.php

@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\DeadCode\Rector\TryCatch;
+
+use PhpParser\Node;
+use PhpParser\Node\Stmt\Catch_;
+use PhpParser\Node\Stmt\Throw_;
+use PhpParser\Node\Stmt\TryCatch;
+use Rector\Core\Rector\AbstractRector;
+use Rector\Core\RectorDefinition\CodeSample;
+use Rector\Core\RectorDefinition\RectorDefinition;
+
+/**
+ * @see \Rector\DeadCode\Tests\Rector\TryCatch\RemoveDeadTryCatchRector\RemoveDeadTryCatchRectorTest
+ */
+final class RemoveDeadTryCatchRector extends AbstractRector
+{
+    public function getDefinition(): RectorDefinition
+    {
+        return new RectorDefinition('Remove dead try/catch', [
+            new CodeSample(
+                <<<'PHP'
+class SomeClass
+{
+    public function run()
+    {
+        try {
+            // some code
+        }
+        catch (Throwable $throwable) {
+            throw $throwable;
+        }
+    }
+}
+PHP
+,
+                <<<'PHP'
+class SomeClass
+{
+    public function run()
+    {
+        // some code
+    }
+}
+PHP
+
+            ),
+        ]);
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getNodeTypes(): array
+    {
+        return [TryCatch::class];
+    }
+
+    /**
+     * @param TryCatch $node
+     */
+    public function refactor(Node $node): ?Node
+    {
+        if (count($node->catches) !== 1) {
+            return null;
+        }
+
+        /** @var Catch_ $onlyCatch */
+        $onlyCatch = $node->catches[0];
+        if (count($onlyCatch->stmts) !== 1) {
+            return null;
+        }
+
+        $onlyCatchStmt = $onlyCatch->stmts[0];
+        if (! $onlyCatchStmt instanceof Throw_) {
+            return null;
+        }
+
+        if (! $this->areNamesEqual($onlyCatch->var, $onlyCatchStmt->expr)) {
+            return null;
+        }
+
+        foreach ($node->stmts as $tryStmt) {
+            $this->addNodeAfterNode($tryStmt, $node);
+        }
+
+        $this->removeNode($node);
+
+        return null;
+    }
+}

rules/dead-code/tests/Rector/TryCatch/RemoveDeadTryCatchRector/Fixture/fixture.php.inc

@@ -0,0 +1,33 @@
+<?php
+
+namespace Rector\DeadCode\Tests\Rector\TryCatch\RemoveDeadTryCatchRector\Fixture;
+
+class SomeClass
+{
+    public function run()
+    {
+        try {
+            // some code
+        }
+        catch (Throwable $throwable) {
+            throw $throwable;
+        }
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\DeadCode\Tests\Rector\TryCatch\RemoveDeadTryCatchRector\Fixture;
+
+class SomeClass
+{
+    public function run()
+    {
+        // some code
+
+    }
+}
+
+?>

rules/dead-code/tests/Rector/TryCatch/RemoveDeadTryCatchRector/Fixture/multi_lines.php.inc

@@ -0,0 +1,40 @@
+<?php
+
+namespace Rector\DeadCode\Tests\Rector\TryCatch\RemoveDeadTryCatchRector\Fixture;
+
+class MultiLines
+{
+    public function run()
+    {
+        try {
+            $one = 1;
+            $two = 1;
+            if ($one + $two > 1) {
+                return 155;
+            }
+        }
+        catch (Throwable $throwable) {
+            throw $throwable;
+        }
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\DeadCode\Tests\Rector\TryCatch\RemoveDeadTryCatchRector\Fixture;
+
+class MultiLines
+{
+    public function run()
+    {
+        $one = 1;
+        $two = 1;
+        if ($one + $two > 1) {
+            return 155;
+        }
+    }
+}
+
+?>

rules/dead-code/tests/Rector/TryCatch/RemoveDeadTryCatchRector/Fixture/skip_catch_else.php.inc

@@ -0,0 +1,19 @@
+<?php
+
+namespace Rector\DeadCode\Tests\Rector\TryCatch\RemoveDeadTryCatchRector\Fixture;
+
+use InvalidArgumentException;
+
+class SkipCatchElse
+{
+    public function run()
+    {
+        try {
+            $one = 1;
+        }
+        catch (Throwable $throwable) {
+            $throwable = new InvalidArgumentException();
+            throw $throwable;
+        }
+    }
+}

rules/dead-code/tests/Rector/TryCatch/RemoveDeadTryCatchRector/RemoveDeadTryCatchRectorTest.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\DeadCode\Tests\Rector\TryCatch\RemoveDeadTryCatchRector;
+
+use Iterator;
+use Rector\Core\Testing\PHPUnit\AbstractRectorTestCase;
+use Rector\DeadCode\Rector\TryCatch\RemoveDeadTryCatchRector;
+
+final class RemoveDeadTryCatchRectorTest extends AbstractRectorTestCase
+{
+    /**
+     * @dataProvider provideData()
+     */
+    public function test(string $file): void
+    {
+        $this->doTestFile($file);
+    }
+
+    public function provideData(): Iterator
+    {
+        return $this->yieldFilesFromDirectory(__DIR__ . '/Fixture');
+    }
+
+    protected function getRectorClass(): string
+    {
+        return RemoveDeadTryCatchRector::class;
+    }
+}