rector/rules/DeadCode/Rector/Ternary/TernaryToBooleanOrFalseToBooleanAndRector.php

<?php

declare (strict_types=1);
namespace Rector\DeadCode\Rector\Ternary;

use PhpParser\Node;
use PhpParser\Node\Expr;
use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
use PhpParser\Node\Expr\Ternary;
use Rector\PhpParser\Node\Value\ValueResolver;
use Rector\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
 * @see \Rector\Tests\DeadCode\Rector\Ternary\TernaryToBooleanOrFalseToBooleanAndRector\TernaryToBooleanOrFalseToBooleanAndRectorTest
 */
final class TernaryToBooleanOrFalseToBooleanAndRector extends AbstractRector
{
    /**
     * @readonly
     * @var \Rector\PhpParser\Node\Value\ValueResolver
     */
    private $valueResolver;
    public function __construct(ValueResolver $valueResolver)
    {
        $this->valueResolver = $valueResolver;
    }
    public function getRuleDefinition() : RuleDefinition
    {
        return new RuleDefinition('Change ternary of bool : false to && bool', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
    public function go()
    {
        return $value ? $this->getBool() : false;
    }

    private function getBool(): bool
    {
        return (bool) 5;
    }
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeClass
{
    public function go()
    {
        return $value && $this->getBool();
    }

    private function getBool(): bool
    {
        return (bool) 5;
    }
}
CODE_SAMPLE
)]);
    }
    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes() : array
    {
        return [Ternary::class];
    }
    /**
     * @param Ternary $node
     */
    public function refactor(Node $node) : ?Node
    {
        if (!$node->if instanceof Expr) {
            return null;
        }
        if (!$this->valueResolver->isFalse($node->else)) {
            return null;
        }
        if ($this->valueResolver->isTrue($node->if)) {
            return null;
        }
        $ifType = $this->getType($node->if);
        if (!$ifType->isBoolean()->yes()) {
            return null;
        }
        return new BooleanAnd($node->cond, $node->if);
    }
}