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<?php declare (strict_types=1); namespace Rector\CodeQuality\Rector\FuncCall; use PhpParser\Node; use PhpParser\Node\Arg; use PhpParser\Node\Expr; use PhpParser\Node\Expr\Assign; use PhpParser\Node\Expr\FuncCall; use PhpParser\Node\FunctionLike; use PhpParser\Node\Name; use Rector\Core\Rector\AbstractRector; use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample; use Symplify\RuleDocGenerator\ValueObject\RuleDefinition; /** * @see \Rector\Tests\CodeQuality\Rector\FuncCall\ArrayKeysAndInArrayToArrayKeyExistsRector\ArrayKeysAndInArrayToArrayKeyExistsRectorTest */ final class ArrayKeysAndInArrayToArrayKeyExistsRector extends AbstractRector { public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Replace array_keys() and in_array() to array_key_exists()', [new CodeSample(<<<'CODE_SAMPLE' function run($packageName, $values) { $keys = array_keys($values); return in_array($packageName, $keys, true); } CODE_SAMPLE , <<<'CODE_SAMPLE' function run($packageName, $values) { return array_key_exists($packageName, $values); } CODE_SAMPLE )]); } /** * @return array<class-string<Node>> */ public function getNodeTypes() : array { return [FuncCall::class]; } /** * @param FuncCall $node */ public function refactor(Node $node) : ?Node { if (!$this->nodeNameResolver->isName($node, 'in_array')) { return null; } $args = $node->getArgs(); $secondArg = $args[1]; $arrayVariable = $secondArg->value; $previousAssignArraysKeysFuncCall = $this->findPreviousAssignToArrayKeys($node, $arrayVariable); if ($previousAssignArraysKeysFuncCall instanceof Assign) { /** @var FuncCall $arrayKeysFuncCall */ $arrayKeysFuncCall = $previousAssignArraysKeysFuncCall->expr; $this->removeNode($previousAssignArraysKeysFuncCall); return $this->createArrayKeyExists($node, $arrayKeysFuncCall); } if ($arrayVariable instanceof FuncCall && $this->isName($arrayVariable, 'array_keys')) { $arrayKeysFuncCallArgs = $arrayVariable->getArgs(); if (\count($arrayKeysFuncCallArgs) > 1) { return null; } // unwrap array func call $secondArg->value = $arrayKeysFuncCallArgs[0]->value; $node->name = new Name('array_key_exists'); unset($node->args[2]); return $node; } return null; } private function createArrayKeyExists(FuncCall $inArrayFuncCall, FuncCall $arrayKeysFuncCall) : ?FuncCall { if (!isset($inArrayFuncCall->args[0])) { return null; } if (!$inArrayFuncCall->args[0] instanceof Arg) { return null; } if (!isset($arrayKeysFuncCall->args[0])) { return null; } if (!$arrayKeysFuncCall->args[0] instanceof Arg) { return null; } $arguments = [$inArrayFuncCall->args[0], $arrayKeysFuncCall->args[0]]; return new FuncCall(new Name('array_key_exists'), $arguments); } /** * @return null|\PhpParser\Node|\PhpParser\Node\FunctionLike */ private function findPreviousAssignToArrayKeys(FuncCall $funcCall, Expr $expr) { return $this->betterNodeFinder->findFirstPrevious($funcCall, function (Node $node) use($expr) : bool { // breaking out of scope if ($node instanceof FunctionLike) { return \true; } if (!$node instanceof Assign) { return !(bool) $this->betterNodeFinder->find($node, function (Node $subNode) use($expr) : bool { return $this->nodeComparator->areNodesEqual($expr, $subNode); }); } if (!$this->nodeComparator->areNodesEqual($expr, $node->var)) { return \false; } if (!$node->expr instanceof FuncCall) { return \false; } return $this->nodeNameResolver->isName($node->expr, 'array_keys'); }); } }
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