mirror of https://github.com/rectorphp/rector.git
99 lines
2.9 KiB
PHP
99 lines
2.9 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\DeadCode\Rector\Array_;
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use PhpParser\Node;
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use PhpParser\Node\Expr\Array_;
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use PhpParser\Node\Expr\ArrayItem;
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use Rector\Core\Contract\PhpParser\NodePrinterInterface;
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use Rector\Core\Rector\AbstractRector;
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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://3v4l.org/SG0Wu
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* @see \Rector\Tests\DeadCode\Rector\Array_\RemoveDuplicatedArrayKeyRector\RemoveDuplicatedArrayKeyRectorTest
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*/
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final class RemoveDuplicatedArrayKeyRector extends AbstractRector
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{
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/**
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* @readonly
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* @var \Rector\Core\Contract\PhpParser\NodePrinterInterface
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*/
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private $nodePrinter;
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public function __construct(NodePrinterInterface $nodePrinter)
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{
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$this->nodePrinter = $nodePrinter;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Remove duplicated key in defined arrays.', [new CodeSample(<<<'CODE_SAMPLE'
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$item = [
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1 => 'A',
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1 => 'B'
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];
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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$item = [
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1 => 'B'
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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 [Array_::class];
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}
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/**
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* @param Array_ $node
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*/
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public function refactor(Node $node) : ?Node
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{
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$arrayItemsWithDuplicatedKey = $this->getArrayItemsWithDuplicatedKey($node);
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if ($arrayItemsWithDuplicatedKey === []) {
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return null;
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}
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foreach ($arrayItemsWithDuplicatedKey as $arrayItemWithDuplicatedKey) {
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// keep last item
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\array_pop($arrayItemWithDuplicatedKey);
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$this->nodeRemover->removeNodes($arrayItemWithDuplicatedKey);
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}
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return $node;
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}
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/**
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* @return ArrayItem[][]
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*/
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private function getArrayItemsWithDuplicatedKey(Array_ $array) : array
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{
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$arrayItemsByKeys = [];
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foreach ($array->items as $arrayItem) {
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if (!$arrayItem instanceof ArrayItem) {
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continue;
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}
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if ($arrayItem->key === null) {
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continue;
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}
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$keyValue = $this->nodePrinter->print($arrayItem->key);
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$arrayItemsByKeys[$keyValue][] = $arrayItem;
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}
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return $this->filterItemsWithSameKey($arrayItemsByKeys);
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}
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/**
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* @param ArrayItem[][] $arrayItemsByKeys
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* @return ArrayItem[][]
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*/
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private function filterItemsWithSameKey(array $arrayItemsByKeys) : array
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{
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/** @var ArrayItem[][] $arrayItemsByKeys */
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$arrayItemsByKeys = \array_filter($arrayItemsByKeys, static function (array $arrayItems) : bool {
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return \count($arrayItems) > 1;
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});
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return \array_filter($arrayItemsByKeys, static function (array $arrayItems) : bool {
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return \count($arrayItems) > 1;
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});
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}
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}
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