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