mirror of https://github.com/rectorphp/rector.git
134 lines
4.1 KiB
PHP
134 lines
4.1 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\EarlyReturn\Rector\Return_;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
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use PhpParser\Node\Expr\BinaryOp\BooleanOr;
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use PhpParser\Node\Stmt\If_;
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use PhpParser\Node\Stmt\Return_;
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use PHPStan\Analyser\Scope;
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use Rector\Core\NodeAnalyzer\CallAnalyzer;
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use Rector\Core\NodeManipulator\IfManipulator;
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use Rector\Core\PhpParser\Node\AssignAndBinaryMap;
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use Rector\Core\Rector\AbstractScopeAwareRector;
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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\Return_\ReturnBinaryOrToEarlyReturnRector\ReturnBinaryOrToEarlyReturnRectorTest
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*/
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final class ReturnBinaryOrToEarlyReturnRector extends AbstractScopeAwareRector
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{
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/**
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* @readonly
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* @var \Rector\Core\NodeManipulator\IfManipulator
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*/
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private $ifManipulator;
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/**
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* @readonly
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* @var \Rector\Core\PhpParser\Node\AssignAndBinaryMap
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*/
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private $assignAndBinaryMap;
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/**
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* @readonly
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* @var \Rector\Core\NodeAnalyzer\CallAnalyzer
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*/
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private $callAnalyzer;
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public function __construct(IfManipulator $ifManipulator, AssignAndBinaryMap $assignAndBinaryMap, CallAnalyzer $callAnalyzer)
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{
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$this->ifManipulator = $ifManipulator;
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$this->assignAndBinaryMap = $assignAndBinaryMap;
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$this->callAnalyzer = $callAnalyzer;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Changes Single return of || to early returns', [new CodeSample(<<<'CODE_SAMPLE'
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class SomeClass
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{
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public function accept()
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{
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return $this->something() || $this->somethingElse();
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class SomeClass
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{
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public function accept()
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{
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if ($this->something()) {
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return true;
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}
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return (bool) $this->somethingElse();
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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 [Return_::class];
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}
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/**
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* @param Return_ $node
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* @return null|Node[]
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*/
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public function refactorWithScope(Node $node, Scope $scope) : ?array
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{
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if (!$node->expr instanceof BooleanOr) {
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return null;
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}
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/** @var BooleanOr $booleanOr */
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$booleanOr = $node->expr;
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$left = $booleanOr->left;
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$ifs = $this->createMultipleIfs($left, $node, []);
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// ensure ifs not removed by other rules
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if ($ifs === []) {
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return null;
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}
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if (!$this->callAnalyzer->doesIfHasObjectCall($ifs)) {
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return null;
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}
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$this->mirrorComments($ifs[0], $node);
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$lastReturnExpr = $this->assignAndBinaryMap->getTruthyExpr($booleanOr->right, $scope);
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return \array_merge($ifs, [new Return_($lastReturnExpr)]);
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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, Return_ $return, 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, $return, $ifs));
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$ifs[] = $this->ifManipulator->createIfStmt($expr->right, new Return_($this->nodeFactory->createTrue()));
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$expr = $expr->right;
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if ($expr instanceof BooleanAnd) {
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return [];
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}
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if (!$expr instanceof BooleanOr) {
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continue;
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}
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return [];
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}
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return $ifs + [$this->ifManipulator->createIfStmt($expr, new Return_($this->nodeFactory->createTrue()))];
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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, Return_ $return, 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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return [$this->ifManipulator->createIfStmt($left, new Return_($this->nodeFactory->createTrue()))];
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}
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return $this->createMultipleIfs($left, $return, $ifs);
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}
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}
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