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<?php
declare (strict_types=1);
namespace Rector\FamilyTree\Reflection;
use PhpParser\Node;
use PhpParser\Node\ComplexType;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\PropertyFetch;
use PhpParser\Node\Expr\StaticPropertyFetch;
use PhpParser\Node\Name;
use PhpParser\Node\Stmt;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Interface_;
use PhpParser\Node\Stmt\Property;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\ClassReflection;
use PHPStan\Reflection\ReflectionProvider;
use PHPStan\Type\NullType;
use PHPStan\Type\Type;
use PHPStan\Type\UnionType;
use Rector\Core\Exception\ShouldNotHappenException;
use Rector\Core\PhpParser\AstResolver;
use Rector\Core\PhpParser\Node\BetterNodeFinder;
use Rector\Core\Util\Reflection\PrivatesAccessor;
use Rector\FamilyTree\ValueObject\PropertyType;
use Rector\NodeNameResolver\NodeNameResolver;
use Rector\PHPStanStaticTypeMapper\Enum\TypeKind;
use Rector\StaticTypeMapper\StaticTypeMapper;
final class FamilyRelationsAnalyzer
{
/**
* @readonly
* @var \PHPStan\Reflection\ReflectionProvider
*/
private $reflectionProvider;
/**
* @readonly
* @var \Rector\Core\Util\Reflection\PrivatesAccessor
*/
private $privatesAccessor;
/**
* @readonly
* @var \Rector\NodeNameResolver\NodeNameResolver
*/
private $nodeNameResolver;
/**
* @readonly
* @var \Rector\Core\PhpParser\Node\BetterNodeFinder
*/
private $betterNodeFinder;
/**
* @readonly
* @var \Rector\StaticTypeMapper\StaticTypeMapper
*/
private $staticTypeMapper;
/**
* @readonly
* @var \Rector\Core\PhpParser\AstResolver
*/
private $astResolver;
public function __construct(ReflectionProvider $reflectionProvider, PrivatesAccessor $privatesAccessor, NodeNameResolver $nodeNameResolver, BetterNodeFinder $betterNodeFinder, StaticTypeMapper $staticTypeMapper, AstResolver $astResolver)
{
$this->reflectionProvider = $reflectionProvider;
$this->privatesAccessor = $privatesAccessor;
$this->nodeNameResolver = $nodeNameResolver;
$this->betterNodeFinder = $betterNodeFinder;
$this->staticTypeMapper = $staticTypeMapper;
$this->astResolver = $astResolver;
}
/**
* @return ClassReflection[]
*/
public function getChildrenOfClassReflection(ClassReflection $desiredClassReflection) : array
{
/** @var ClassReflection[] $classReflections */
$classReflections = $this->privatesAccessor->getPrivateProperty($this->reflectionProvider, 'classes');
$childrenClassReflections = [];
foreach ($classReflections as $classReflection) {
if (!$classReflection->isSubclassOf($desiredClassReflection->getName())) {
continue;
}
$childrenClassReflections[] = $classReflection;
}
return $childrenClassReflections;
}
/**
* @param \PhpParser\Node\Name|\PhpParser\Node\ComplexType|null $propertyTypeNode
*/
public function getPossibleUnionPropertyType(Property $property, Type $varType, Scope $scope, $propertyTypeNode) : PropertyType
{
if ($varType instanceof UnionType) {
return new PropertyType($varType, $propertyTypeNode);
}
$classReflection = $scope->getClassReflection();
if (!$classReflection instanceof ClassReflection) {
throw new ShouldNotHappenException();
}
$ancestorClassReflections = \array_merge($classReflection->getParents(), $classReflection->getInterfaces());
$propertyName = $this->nodeNameResolver->getName($property);
$kindPropertyFetch = $this->getKindPropertyFetch($property);
foreach ($ancestorClassReflections as $ancestorClassReflection) {
$ancestorClassName = $ancestorClassReflection->getName();
if ($ancestorClassReflection->isSubclassOf('PHPUnit\\Framework\\TestCase')) {
continue;
}
$class = $this->astResolver->resolveClassFromClassReflection($ancestorClassReflection, $ancestorClassName);
if (!$class instanceof Class_) {
continue;
}
if (!$this->isPropertyWritten($class->stmts, $propertyName, $kindPropertyFetch)) {
continue;
}
$varType = new UnionType([$varType, new NullType()]);
$propertyTypeNode = $this->staticTypeMapper->mapPHPStanTypeToPhpParserNode($varType, TypeKind::PROPERTY);
return new PropertyType($varType, $propertyTypeNode);
}
return new PropertyType($varType, $propertyTypeNode);
}
/**
* @api
* @return string[]
* @param \PhpParser\Node\Stmt\Class_|\PhpParser\Node\Stmt\Interface_|\PhpParser\Node\Name $classOrName
*/
public function getClassLikeAncestorNames($classOrName) : array
{
$ancestorNames = [];
if ($classOrName instanceof Name) {
$fullName = $this->nodeNameResolver->getName($classOrName);
$classLike = $this->astResolver->resolveClassFromName($fullName);
} else {
$classLike = $classOrName;
}
if ($classLike instanceof Interface_) {
foreach ($classLike->extends as $extendInterfaceName) {
$ancestorNames[] = $this->nodeNameResolver->getName($extendInterfaceName);
$ancestorNames = \array_merge($ancestorNames, $this->getClassLikeAncestorNames($extendInterfaceName));
}
}
if ($classLike instanceof Class_) {
if ($classLike->extends instanceof Name) {
$ancestorNames[] = $this->nodeNameResolver->getName($classLike->extends);
$ancestorNames = \array_merge($ancestorNames, $this->getClassLikeAncestorNames($classLike->extends));
}
foreach ($classLike->implements as $implement) {
$ancestorNames[] = $this->nodeNameResolver->getName($implement);
$ancestorNames = \array_merge($ancestorNames, $this->getClassLikeAncestorNames($implement));
}
}
/** @var string[] $ancestorNames */
return $ancestorNames;
}
private function getKindPropertyFetch(Property $property) : string
{
return $property->isStatic() ? StaticPropertyFetch::class : PropertyFetch::class;
}
/**
* @param Stmt[] $stmts
*/
private function isPropertyWritten(array $stmts, string $propertyName, string $kindPropertyFetch) : bool
{
return (bool) $this->betterNodeFinder->findFirst($stmts, function (Node $node) use($propertyName, $kindPropertyFetch) : bool {
if (!$node instanceof ClassMethod) {
return \false;
}
if ($this->nodeNameResolver->isName($node->name, 'autowire')) {
return \false;
}
return $this->isPropertyAssignedInClassMethod($node, $propertyName, $kindPropertyFetch);
});
}
private function isPropertyAssignedInClassMethod(ClassMethod $classMethod, string $propertyName, string $kindPropertyFetch) : bool
{
if ($classMethod->stmts === null) {
return \false;
}
return (bool) $this->betterNodeFinder->findFirst($classMethod->stmts, function (Node $node) use($propertyName, $kindPropertyFetch) : bool {
if (!$node instanceof Assign) {
return \false;
}
return $kindPropertyFetch === \get_class($node->var) && $this->nodeNameResolver->isName($node->var, $propertyName);
});
}
}
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