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<?php declare (strict_types=1); namespace Rector\CodeQuality\Rector\Identical; use PhpParser\Node; use PhpParser\Node\Expr; use PhpParser\Node\Expr\BinaryOp\Identical; use PhpParser\Node\Expr\BinaryOp\NotIdentical; use PhpParser\Node\Expr\BooleanNot; use PHPStan\Type\BooleanType; use Rector\Core\Rector\AbstractRector; use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample; use Symplify\RuleDocGenerator\ValueObject\RuleDefinition; /** * @see \Rector\Tests\CodeQuality\Rector\Identical\SimplifyBoolIdenticalTrueRector\SimplifyBoolIdenticalTrueRectorTest */ final class SimplifyBoolIdenticalTrueRector extends AbstractRector { public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Simplify bool value compare to true or false', [new CodeSample(<<<'CODE_SAMPLE' class SomeClass { public function run(bool $value, string $items) { $match = in_array($value, $items, TRUE) === TRUE; $match = in_array($value, $items, TRUE) !== FALSE; } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeClass { public function run(bool $value, string $items) { $match = in_array($value, $items, TRUE); $match = in_array($value, $items, TRUE); } } CODE_SAMPLE )]); } /** * @return array<class-string<Node>> */ public function getNodeTypes() : array { return [Identical::class, NotIdentical::class]; } /** * @param Identical|NotIdentical $node */ public function refactor(Node $node) : ?Node { $leftType = $this->getType($node->left); if ($leftType instanceof BooleanType && !$this->valueResolver->isTrueOrFalse($node->left)) { return $this->processBoolTypeToNotBool($node, $node->left, $node->right); } $rightType = $this->getType($node->right); if (!$rightType instanceof BooleanType) { return null; } if ($this->valueResolver->isTrueOrFalse($node->right)) { return null; } return $this->processBoolTypeToNotBool($node, $node->right, $node->left); } private function processBoolTypeToNotBool(Node $node, Expr $leftExpr, Expr $rightExpr) : ?Expr { if ($node instanceof Identical) { return $this->refactorIdentical($leftExpr, $rightExpr); } if ($node instanceof NotIdentical) { return $this->refactorNotIdentical($leftExpr, $rightExpr); } return null; } private function refactorIdentical(Expr $leftExpr, Expr $rightExpr) : ?Expr { if ($this->valueResolver->isTrue($rightExpr)) { return $leftExpr; } if ($this->valueResolver->isFalse($rightExpr)) { // prevent !! if ($leftExpr instanceof BooleanNot) { return $leftExpr->expr; } return new BooleanNot($leftExpr); } return null; } private function refactorNotIdentical(Expr $leftExpr, Expr $rightExpr) : ?Expr { if ($this->valueResolver->isFalse($rightExpr)) { return $leftExpr; } if ($this->valueResolver->isTrue($rightExpr)) { return new BooleanNot($leftExpr); } return null; } }
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