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<?php
declare (strict_types=1);
namespace Rector\Php81\Rector\ClassMethod;
use PhpParser\Node;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\BinaryOp\Coalesce;
use PhpParser\Node\Expr\New_;
use PhpParser\Node\NullableType;
use PhpParser\Node\Param;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\ClassLike;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Interface_;
use PhpParser\Node\Stmt\Property;
use PHPStan\Reflection\ClassReflection;
use Rector\Core\Rector\AbstractRector;
use Rector\Core\Reflection\ReflectionResolver;
use Rector\Core\ValueObject\MethodName;
use Rector\Core\ValueObject\PhpVersionFeature;
use Rector\FamilyTree\NodeAnalyzer\ClassChildAnalyzer;
use Rector\Php81\NodeAnalyzer\ComplexNewAnalyzer;
use Rector\VersionBonding\Contract\MinPhpVersionInterface;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
* @changelog https://wiki.php.net/rfc/new_in_initializers
*
* @see \Rector\Tests\Php81\Rector\ClassMethod\NewInInitializerRector\NewInInitializerRectorTest
*/
final class NewInInitializerRector extends AbstractRector implements MinPhpVersionInterface
{
/**
* @readonly
* @var \Rector\Php81\NodeAnalyzer\ComplexNewAnalyzer
*/
private $complexNewAnalyzer;
/**
* @readonly
* @var \Rector\Core\Reflection\ReflectionResolver
*/
private $reflectionResolver;
/**
* @readonly
* @var \Rector\FamilyTree\NodeAnalyzer\ClassChildAnalyzer
*/
private $classChildAnalyzer;
public function __construct(ComplexNewAnalyzer $complexNewAnalyzer, ReflectionResolver $reflectionResolver, ClassChildAnalyzer $classChildAnalyzer)
{
$this->complexNewAnalyzer = $complexNewAnalyzer;
$this->reflectionResolver = $reflectionResolver;
$this->classChildAnalyzer = $classChildAnalyzer;
}
public function getRuleDefinition() : RuleDefinition
{
return new RuleDefinition('Replace property declaration of new state with direct new', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
private Logger $logger;
public function __construct(
?Logger $logger = null,
) {
$this->logger = $logger ?? new NullLogger;
}
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeClass
{
public function __construct(
private Logger $logger = new NullLogger,
) {
}
}
CODE_SAMPLE
)]);
}
/**
* @return array<class-string<Node>>
*/
public function getNodeTypes() : array
{
return [ClassMethod::class];
}
/**
* @param ClassMethod $node
*/
public function refactor(Node $node) : ?Node
{
if (!$this->isLegalClass($node)) {
return null;
}
$params = $this->matchConstructorParams($node);
if ($params === []) {
return null;
}
if ($this->isOverrideAbstractMethod($node)) {
return null;
}
foreach ($params as $param) {
/** @var string $paramName */
$paramName = $this->getName($param->var);
$toPropertyAssigns = $this->betterNodeFinder->findClassMethodAssignsToLocalProperty($node, $paramName);
$toPropertyAssigns = \array_filter($toPropertyAssigns, static function (Assign $assign) : bool {
return $assign->expr instanceof Coalesce;
});
foreach ($toPropertyAssigns as $toPropertyAssign) {
/** @var Coalesce $coalesce */
$coalesce = $toPropertyAssign->expr;
if (!$coalesce->right instanceof New_) {
continue;
}
if ($this->complexNewAnalyzer->isDynamic($coalesce->right)) {
continue;
}
/** @var NullableType $currentParamType */
$currentParamType = $param->type;
$param->type = $currentParamType->type;
$param->default = $coalesce->right;
$this->removeNode($toPropertyAssign);
$this->processPropertyPromotion($node, $param, $paramName);
}
}
return $node;
}
public function provideMinPhpVersion() : int
{
return PhpVersionFeature::NEW_INITIALIZERS;
}
private function isOverrideAbstractMethod(ClassMethod $classMethod) : bool
{
$classReflection = $this->reflectionResolver->resolveClassReflection($classMethod);
$methodName = $this->nodeNameResolver->getName($classMethod);
return $classReflection instanceof ClassReflection && $this->classChildAnalyzer->hasAbstractParentClassMethod($classReflection, $methodName);
}
private function processPropertyPromotion(ClassMethod $classMethod, Param $param, string $paramName) : void
{
$classLike = $this->betterNodeFinder->findParentType($classMethod, ClassLike::class);
if (!$classLike instanceof ClassLike) {
return;
}
$property = $classLike->getProperty($paramName);
if (!$property instanceof Property) {
return;
}
$param->flags = $property->flags;
$this->removeNode($property);
}
private function isLegalClass(ClassMethod $classMethod) : bool
{
$classLike = $this->betterNodeFinder->findParentType($classMethod, ClassLike::class);
if ($classLike instanceof Interface_) {
return \false;
}
if ($classLike instanceof Class_) {
return !$classLike->isAbstract();
}
return \true;
}
/**
* @return Param[]
*/
private function matchConstructorParams(ClassMethod $classMethod) : array
{
if (!$this->isName($classMethod, MethodName::CONSTRUCT)) {
return [];
}
if ($classMethod->params === []) {
return [];
}
if ((array) $classMethod->stmts === []) {
return [];
}
return \array_filter($classMethod->params, static function (Param $param) : bool {
return $param->type instanceof NullableType;
});
}
}
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