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<?php
declare (strict_types=1);
namespace Rector\Core\PhpParser\NodeFinder;
use PhpParser\Node\Expr\PropertyFetch;
use PhpParser\Node\Expr\StaticPropertyFetch;
use PhpParser\Node\Param;
use PhpParser\Node\Stmt;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\Property;
use PhpParser\Node\Stmt\Trait_;
use PHPStan\Type\TypeWithClassName;
use Rector\Core\NodeAnalyzer\PropertyFetchAnalyzer;
use Rector\Core\PhpParser\AstResolver;
use Rector\Core\PhpParser\Node\BetterNodeFinder;
use Rector\Core\Reflection\ReflectionResolver;
use Rector\NodeNameResolver\NodeNameResolver;
use Rector\NodeTypeResolver\NodeTypeResolver;
final class PropertyFetchFinder
{
/**
* @var string
*/
private const THIS = 'this';
/**
* @readonly
* @var \Rector\Core\PhpParser\Node\BetterNodeFinder
*/
private $betterNodeFinder;
/**
* @readonly
* @var \Rector\NodeNameResolver\NodeNameResolver
*/
private $nodeNameResolver;
/**
* @readonly
* @var \Rector\Core\Reflection\ReflectionResolver
*/
private $reflectionResolver;
/**
* @readonly
* @var \Rector\Core\PhpParser\AstResolver
*/
private $astResolver;
/**
* @readonly
* @var \Rector\NodeTypeResolver\NodeTypeResolver
*/
private $nodeTypeResolver;
/**
* @readonly
* @var \Rector\Core\NodeAnalyzer\PropertyFetchAnalyzer
*/
private $propertyFetchAnalyzer;
public function __construct(BetterNodeFinder $betterNodeFinder, NodeNameResolver $nodeNameResolver, ReflectionResolver $reflectionResolver, AstResolver $astResolver, NodeTypeResolver $nodeTypeResolver, PropertyFetchAnalyzer $propertyFetchAnalyzer)
{
$this->betterNodeFinder = $betterNodeFinder;
$this->nodeNameResolver = $nodeNameResolver;
$this->reflectionResolver = $reflectionResolver;
$this->astResolver = $astResolver;
$this->nodeTypeResolver = $nodeTypeResolver;
$this->propertyFetchAnalyzer = $propertyFetchAnalyzer;
}
/**
* @return PropertyFetch[]|StaticPropertyFetch[]
* @param \PhpParser\Node\Stmt\Property|\PhpParser\Node\Param $propertyOrPromotedParam
*/
public function findPrivatePropertyFetches(Class_ $class, $propertyOrPromotedParam) : array
{
$propertyName = $this->resolvePropertyName($propertyOrPromotedParam);
if ($propertyName === null) {
return [];
}
$classReflection = $this->reflectionResolver->resolveClassAndAnonymousClass($class);
$nodes = [$class];
$nodesTrait = $this->astResolver->parseClassReflectionTraits($classReflection);
$hasTrait = $nodesTrait !== [];
$nodes = \array_merge($nodes, $nodesTrait);
return $this->findPropertyFetchesInClassLike($class, $nodes, $propertyName, $hasTrait);
}
/**
* @return PropertyFetch[]|StaticPropertyFetch[]
*/
public function findLocalPropertyFetchesByName(Class_ $class, string $paramName) : array
{
/** @var PropertyFetch[]|StaticPropertyFetch[] $propertyFetches */
$propertyFetches = $this->betterNodeFinder->findInstancesOf($class, [PropertyFetch::class, StaticPropertyFetch::class]);
$foundPropertyFetches = [];
foreach ($propertyFetches as $propertyFetch) {
if ($this->propertyFetchAnalyzer->isLocalPropertyFetchName($propertyFetch, $paramName)) {
$foundPropertyFetches[] = $propertyFetch;
}
}
return $foundPropertyFetches;
}
/**
* @param Stmt[] $stmts
* @return PropertyFetch[]|StaticPropertyFetch[]
* @param \PhpParser\Node\Stmt\Class_|\PhpParser\Node\Stmt\Trait_ $class
*/
private function findPropertyFetchesInClassLike($class, array $stmts, string $propertyName, bool $hasTrait) : array
{
/** @var PropertyFetch[] $propertyFetches */
$propertyFetches = $this->betterNodeFinder->findInstanceOf($stmts, PropertyFetch::class);
/** @var PropertyFetch[] $matchingPropertyFetches */
$matchingPropertyFetches = \array_filter($propertyFetches, function (PropertyFetch $propertyFetch) use($propertyName, $class, $hasTrait) : bool {
if ($this->isInAnonymous($propertyFetch, $class, $hasTrait)) {
return \false;
}
return $this->isNamePropertyNameEquals($propertyFetch, $propertyName, $class);
});
/** @var StaticPropertyFetch[] $staticPropertyFetches */
$staticPropertyFetches = $this->betterNodeFinder->findInstanceOf($stmts, StaticPropertyFetch::class);
/** @var StaticPropertyFetch[] $matchingStaticPropertyFetches */
$matchingStaticPropertyFetches = \array_filter($staticPropertyFetches, function (StaticPropertyFetch $staticPropertyFetch) use($propertyName) : bool {
return $this->nodeNameResolver->isName($staticPropertyFetch->name, $propertyName);
});
return \array_merge($matchingPropertyFetches, $matchingStaticPropertyFetches);
}
/**
* @param \PhpParser\Node\Stmt\Class_|\PhpParser\Node\Stmt\Trait_ $class
*/
private function isInAnonymous(PropertyFetch $propertyFetch, $class, bool $hasTrait) : bool
{
$parentNode = $this->betterNodeFinder->findParentType($propertyFetch, Class_::class);
if (!$parentNode instanceof Class_) {
return \false;
}
return $parentNode !== $class && !$hasTrait;
}
/**
* @param \PhpParser\Node\Stmt\Class_|\PhpParser\Node\Stmt\Trait_ $class
*/
private function isNamePropertyNameEquals(PropertyFetch $propertyFetch, string $propertyName, $class) : bool
{
// early check if property fetch name is not equals with property name
// so next check is check var name and var type only
if (!$this->nodeNameResolver->isName($propertyFetch->name, $propertyName)) {
return \false;
}
if ($this->nodeNameResolver->isName($propertyFetch->var, self::THIS)) {
return \true;
}
$propertyFetchVarType = $this->nodeTypeResolver->getType($propertyFetch->var);
if (!$propertyFetchVarType instanceof TypeWithClassName) {
return \false;
}
$propertyFetchVarTypeClassName = $propertyFetchVarType->getClassName();
$classLikeName = $this->nodeNameResolver->getName($class);
return $propertyFetchVarTypeClassName === $classLikeName;
}
/**
* @param \PhpParser\Node\Stmt\Property|\PhpParser\Node\Param $propertyOrPromotedParam
*/
private function resolvePropertyName($propertyOrPromotedParam) : ?string
{
if ($propertyOrPromotedParam instanceof Property) {
return $this->nodeNameResolver->getName($propertyOrPromotedParam->props[0]);
}
return $this->nodeNameResolver->getName($propertyOrPromotedParam->var);
}
}
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