mirror of https://github.com/rectorphp/rector.git
134 lines
3.7 KiB
PHP
134 lines
3.7 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\EarlyReturn\Rector\If_;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\BinaryOp\BooleanOr;
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use PhpParser\Node\Stmt\Continue_;
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use PhpParser\Node\Stmt\If_;
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use Rector\NodeManipulator\IfManipulator;
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use Rector\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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* @see \Rector\Tests\EarlyReturn\Rector\If_\ChangeOrIfContinueToMultiContinueRector\ChangeOrIfContinueToMultiContinueRectorTest
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*/
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final class ChangeOrIfContinueToMultiContinueRector extends AbstractRector
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{
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/**
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* @readonly
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* @var \Rector\NodeManipulator\IfManipulator
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*/
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private $ifManipulator;
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public function __construct(IfManipulator $ifManipulator)
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{
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$this->ifManipulator = $ifManipulator;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Changes if || to early return', [new CodeSample(<<<'CODE_SAMPLE'
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class SomeClass
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{
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public function canDrive(Car $newCar)
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{
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foreach ($cars as $car) {
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if ($car->hasWheels() || $car->hasFuel()) {
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continue;
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}
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$car->setWheel($newCar->wheel);
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$car->setFuel($newCar->fuel);
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}
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class SomeClass
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{
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public function canDrive(Car $newCar)
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{
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foreach ($cars as $car) {
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if ($car->hasWheels()) {
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continue;
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}
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if ($car->hasFuel()) {
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continue;
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}
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$car->setWheel($newCar->wheel);
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$car->setFuel($newCar->fuel);
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}
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}
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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 [If_::class];
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}
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/**
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* @param If_ $node
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* @return null|If_[]
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*/
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public function refactor(Node $node) : ?array
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{
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if (!$this->ifManipulator->isIfWithOnly($node, Continue_::class)) {
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return null;
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}
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if (!$node->cond instanceof BooleanOr) {
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return null;
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}
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return $this->processMultiIfContinue($node);
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}
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/**
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* @return null|If_[]
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*/
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private function processMultiIfContinue(If_ $if) : ?array
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{
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$node = clone $if;
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/** @var Continue_ $continue */
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$continue = $if->stmts[0];
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$ifs = $this->createMultipleIfs($if->cond, $continue, []);
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// ensure ifs not removed by other rules
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if ($ifs === []) {
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return null;
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}
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$this->mirrorComments($ifs[0], $node);
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return $ifs;
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}
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/**
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* @param If_[] $ifs
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* @return If_[]
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*/
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private function createMultipleIfs(Expr $expr, Continue_ $continue, array $ifs) : array
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{
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while ($expr instanceof BooleanOr) {
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$ifs = \array_merge($ifs, $this->collectLeftBooleanOrToIfs($expr, $continue, $ifs));
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$ifs[] = new If_($expr->right, ['stmts' => [$continue]]);
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$expr = $expr->right;
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}
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$lastContinueIf = new If_($expr, ['stmts' => [$continue]]);
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// the + is on purpose here, to keep only single continue as last
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return $ifs + [$lastContinueIf];
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}
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/**
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* @param If_[] $ifs
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* @return If_[]
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*/
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private function collectLeftBooleanOrToIfs(BooleanOr $booleanOr, Continue_ $continue, array $ifs) : array
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{
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$left = $booleanOr->left;
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if (!$left instanceof BooleanOr) {
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$if = new If_($left, ['stmts' => [$continue]]);
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return [$if];
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}
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return $this->createMultipleIfs($left, $continue, $ifs);
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}
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}
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