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<?php declare (strict_types=1); namespace Rector\Php72\Rector\Assign; use PhpParser\BuilderHelpers; use PhpParser\Node; use PhpParser\Node\Arg; use PhpParser\Node\Expr; use PhpParser\Node\Expr\ArrayDimFetch; use PhpParser\Node\Expr\Assign; use PhpParser\Node\Expr\FuncCall; use PhpParser\Node\Expr\List_; use PhpParser\Node\Stmt\While_; use Rector\Core\Rector\AbstractRector; use Rector\Core\ValueObject\PhpVersionFeature; use Rector\NodeTypeResolver\Node\AttributeKey; use Rector\PostRector\Collector\NodesToAddCollector; use Rector\VersionBonding\Contract\MinPhpVersionInterface; use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample; use Symplify\RuleDocGenerator\ValueObject\RuleDefinition; /** * @see \Rector\Tests\Php72\Rector\Assign\ReplaceEachAssignmentWithKeyCurrentRector\ReplaceEachAssignmentWithKeyCurrentRectorTest */ final class ReplaceEachAssignmentWithKeyCurrentRector extends AbstractRector implements MinPhpVersionInterface { /** * @var string */ private const KEY = 'key'; /** * @readonly * @var \Rector\PostRector\Collector\NodesToAddCollector */ private $nodesToAddCollector; public function __construct(NodesToAddCollector $nodesToAddCollector) { $this->nodesToAddCollector = $nodesToAddCollector; } public function provideMinPhpVersion() : int { return PhpVersionFeature::NO_EACH_OUTSIDE_LOOP; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Replace each() assign outside loop', [new CodeSample(<<<'CODE_SAMPLE' $array = ['b' => 1, 'a' => 2]; $eachedArray = each($array); CODE_SAMPLE , <<<'CODE_SAMPLE' $array = ['b' => 1, 'a' => 2]; $eachedArray[1] = current($array); $eachedArray['value'] = current($array); $eachedArray[0] = key($array); $eachedArray['key'] = key($array); next($array); CODE_SAMPLE )]); } /** * @return array<class-string<Node>> */ public function getNodeTypes() : array { return [Assign::class]; } /** * @param Assign $node */ public function refactor(Node $node) : ?Node { if ($this->shouldSkip($node)) { return null; } /** @var FuncCall $eachFuncCall */ $eachFuncCall = $node->expr; if (!isset($eachFuncCall->args[0])) { return null; } if (!$eachFuncCall->args[0] instanceof Arg) { return null; } $eachedVariable = $eachFuncCall->args[0]->value; $assignVariable = $node->var; $newNodes = $this->createNewNodes($assignVariable, $eachedVariable); $this->nodesToAddCollector->addNodesAfterNode($newNodes, $node); $this->removeNode($node); return null; } private function shouldSkip(Assign $assign) : bool { if (!$assign->expr instanceof FuncCall) { return \true; } if (!$this->nodeNameResolver->isName($assign->expr, 'each')) { return \true; } $parentNode = $assign->getAttribute(AttributeKey::PARENT_NODE); if ($parentNode instanceof While_) { return \true; } // skip assign to List if (!$parentNode instanceof Assign) { return \false; } return $parentNode->var instanceof List_; } /** * @return array<Assign|FuncCall> */ private function createNewNodes(Expr $assignVariable, Expr $eachedVariable) : array { return [$this->createDimFetchAssignWithFuncCall($assignVariable, $eachedVariable, 1, 'current'), $this->createDimFetchAssignWithFuncCall($assignVariable, $eachedVariable, 'value', 'current'), $this->createDimFetchAssignWithFuncCall($assignVariable, $eachedVariable, 0, self::KEY), $this->createDimFetchAssignWithFuncCall($assignVariable, $eachedVariable, self::KEY, self::KEY), $this->nodeFactory->createFuncCall('next', [new Arg($eachedVariable)])]; } /** * @param string|int $dimValue */ private function createDimFetchAssignWithFuncCall(Expr $assignVariable, Expr $eachedVariable, $dimValue, string $functionName) : Assign { $dimExpr = BuilderHelpers::normalizeValue($dimValue); $arrayDimFetch = new ArrayDimFetch($assignVariable, $dimExpr); return new Assign($arrayDimFetch, $this->nodeFactory->createFuncCall($functionName, [new Arg($eachedVariable)])); } }
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