mirror of https://github.com/rectorphp/rector.git
90 lines
2.7 KiB
PHP
90 lines
2.7 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php71\Rector\TryCatch;
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use PhpParser\Node;
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use PhpParser\Node\Stmt\TryCatch;
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use Rector\PhpParser\Printer\BetterStandardPrinter;
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use Rector\Rector\AbstractRector;
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use Rector\ValueObject\PhpVersionFeature;
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use Rector\VersionBonding\Contract\MinPhpVersionInterface;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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/**
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* @changelog https://wiki.php.net/rfc/multiple-catch
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*
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* @see \Rector\Tests\Php71\Rector\TryCatch\MultiExceptionCatchRector\MultiExceptionCatchRectorTest
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*/
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final class MultiExceptionCatchRector extends AbstractRector implements MinPhpVersionInterface
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{
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/**
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* @readonly
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* @var \Rector\PhpParser\Printer\BetterStandardPrinter
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*/
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private $betterStandardPrinter;
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public function __construct(BetterStandardPrinter $betterStandardPrinter)
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{
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$this->betterStandardPrinter = $betterStandardPrinter;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Changes multi catch of same exception to single one | separated.', [new CodeSample(<<<'CODE_SAMPLE'
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try {
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// Some code...
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} catch (ExceptionType1 $exception) {
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$sameCode;
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} catch (ExceptionType2 $exception) {
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$sameCode;
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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try {
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// Some code...
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} catch (ExceptionType1 | ExceptionType2 $exception) {
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$sameCode;
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}
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CODE_SAMPLE
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)]);
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}
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/**
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* @return array<class-string<Node>>
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*/
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public function getNodeTypes() : array
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{
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return [TryCatch::class];
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}
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/**
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* @param TryCatch $node
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*/
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public function refactor(Node $node) : ?Node
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{
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if (\count($node->catches) < 2) {
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return null;
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}
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$printedCatches = [];
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$hasChanged = \false;
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foreach ($node->catches as $key => $catch) {
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$currentPrintedCatch = $this->betterStandardPrinter->print($catch->stmts);
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// already duplicated catch → remove it and join the type
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if (\in_array($currentPrintedCatch, $printedCatches, \true)) {
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// merge type to existing type
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$existingCatchKey = \array_search($currentPrintedCatch, $printedCatches, \true);
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$node->catches[$existingCatchKey]->types[] = $catch->types[0];
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unset($node->catches[$key]);
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$hasChanged = \true;
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continue;
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}
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$printedCatches[$key] = $currentPrintedCatch;
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}
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if ($hasChanged) {
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return $node;
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}
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return null;
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}
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::MULTI_EXCEPTION_CATCH;
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}
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}
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