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<?php declare (strict_types=1); namespace Rector\Php71\Rector\BinaryOp; use PhpParser\Node; use PhpParser\Node\Expr; use PhpParser\Node\Expr\BinaryOp; use PhpParser\Node\Expr\BinaryOp\Coalesce; use PhpParser\Node\Expr\BinaryOp\Concat; use PhpParser\Node\Expr\Variable; use PhpParser\Node\Scalar; use PhpParser\Node\Scalar\LNumber; use PhpParser\Node\Scalar\MagicConst\Line; use PhpParser\Node\Scalar\String_; use PHPStan\Type\Constant\ConstantStringType; use Rector\Core\NodeAnalyzer\ExprAnalyzer; use Rector\Core\Rector\AbstractRector; use Rector\Core\ValueObject\PhpVersionFeature; use Rector\VersionBonding\Contract\MinPhpVersionInterface; use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample; use Symplify\RuleDocGenerator\ValueObject\RuleDefinition; /** * @changelog https://3v4l.org/XPEEl * @changelog https://3v4l.org/ObNQZ * @see \Rector\Tests\Php71\Rector\BinaryOp\BinaryOpBetweenNumberAndStringRector\BinaryOpBetweenNumberAndStringRectorTest */ final class BinaryOpBetweenNumberAndStringRector extends AbstractRector implements MinPhpVersionInterface { /** * @readonly * @var \Rector\Core\NodeAnalyzer\ExprAnalyzer */ private $exprAnalyzer; public function __construct(ExprAnalyzer $exprAnalyzer) { $this->exprAnalyzer = $exprAnalyzer; } public function provideMinPhpVersion() : int { return PhpVersionFeature::BINARY_OP_NUMBER_STRING; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Change binary operation between some number + string to PHP 7.1 compatible version', [new CodeSample(<<<'CODE_SAMPLE' class SomeClass { public function run() { $value = 5 + ''; $value = 5.0 + 'hi'; } } CODE_SAMPLE , <<<'CODE_SAMPLE' class SomeClass { public function run() { $value = 5 + 0; $value = 5.0 + 0; } } CODE_SAMPLE )]); } /** * @return array<class-string<Node>> */ public function getNodeTypes() : array { return [BinaryOp::class]; } /** * @param BinaryOp $node */ public function refactor(Node $node) : ?Node { if ($node instanceof Concat) { return null; } if ($node instanceof Coalesce) { return null; } if ($this->exprAnalyzer->isNonTypedFromParam($node->left)) { return null; } if ($this->exprAnalyzer->isNonTypedFromParam($node->right)) { return null; } if ($this->isStringOrStaticNonNumbericString($node->left) && $this->nodeTypeResolver->isNumberType($node->right)) { $node->left = new LNumber(0); return $node; } if ($this->isStringOrStaticNonNumbericString($node->right) && $this->nodeTypeResolver->isNumberType($node->left)) { $node->right = new LNumber(0); return $node; } return null; } private function isStringOrStaticNonNumbericString(Expr $expr) : bool { // replace only scalar values, not variables/constants/etc. if (!$expr instanceof Scalar && !$expr instanceof Variable) { return \false; } if ($expr instanceof Line) { return \false; } $value = null; $exprStaticType = $this->getType($expr); if ($expr instanceof String_) { $value = $expr->value; } elseif ($exprStaticType instanceof ConstantStringType) { $value = $exprStaticType->getValue(); } else { return \false; } return !\is_numeric($value); } }
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