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Methods.php
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<?php
namespace Psalm\Internal\Codebase;
use InvalidArgumentException;
use PhpParser;
use Psalm\CodeLocation;
use Psalm\Codebase;
use Psalm\Context;
use Psalm\Internal\Analyzer\SourceAnalyzer;
use Psalm\Internal\Analyzer\Statements\Expression\Call\ClassTemplateParamCollector;
use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
use Psalm\Internal\Analyzer\StatementsAnalyzer;
use Psalm\Internal\MethodIdentifier;
use Psalm\Internal\Provider\ClassLikeStorageProvider;
use Psalm\Internal\Provider\FileReferenceProvider;
use Psalm\Internal\Provider\MethodExistenceProvider;
use Psalm\Internal\Provider\MethodParamsProvider;
use Psalm\Internal\Provider\MethodReturnTypeProvider;
use Psalm\Internal\Provider\MethodVisibilityProvider;
use Psalm\Internal\Type\Comparator\UnionTypeComparator;
use Psalm\Internal\Type\TemplateInferredTypeReplacer;
use Psalm\Internal\Type\TemplateResult;
use Psalm\Internal\Type\TypeExpander;
use Psalm\Internal\TypeVisitor\TypeLocalizer;
use Psalm\StatementsSource;
use Psalm\Storage\ClassLikeStorage;
use Psalm\Storage\FunctionLikeParameter;
use Psalm\Storage\MethodStorage;
use Psalm\Type;
use Psalm\Type\Atomic;
use Psalm\Type\Atomic\TCallable;
use Psalm\Type\Atomic\TClosure;
use Psalm\Type\Atomic\TEnumCase;
use Psalm\Type\Atomic\TKeyedArray;
use Psalm\Type\Atomic\TNamedObject;
use Psalm\Type\Atomic\TNull;
use Psalm\Type\Atomic\TTemplateParam;
use Psalm\Type\Union;
use UnexpectedValueException;
use function array_pop;
use function assert;
use function count;
use function explode;
use function in_array;
use function is_int;
use function reset;
use function strtolower;
/**
* @internal
*
* Handles information about class methods
*/
final class Methods
{
private ClassLikeStorageProvider $classlike_storage_provider;
public bool $collect_locations = false;
public FileReferenceProvider $file_reference_provider;
private ClassLikes $classlikes;
public MethodReturnTypeProvider $return_type_provider;
public MethodParamsProvider $params_provider;
public MethodExistenceProvider $existence_provider;
public MethodVisibilityProvider $visibility_provider;
public function __construct(
ClassLikeStorageProvider $storage_provider,
FileReferenceProvider $file_reference_provider,
ClassLikes $classlikes
) {
$this->classlike_storage_provider = $storage_provider;
$this->file_reference_provider = $file_reference_provider;
$this->classlikes = $classlikes;
$this->return_type_provider = new MethodReturnTypeProvider();
$this->existence_provider = new MethodExistenceProvider();
$this->visibility_provider = new MethodVisibilityProvider();
$this->params_provider = new MethodParamsProvider();
}
/**
* Whether or not a given method exists
*
* If you pass true in $is_used argument the method return is considered used
*
* @param lowercase-string|null $calling_method_id
*/
public function methodExists(
MethodIdentifier $method_id,
?string $calling_method_id = null,
?CodeLocation $code_location = null,
?StatementsSource $source = null,
?string $source_file_path = null,
bool $use_method_existence_provider = true,
bool $is_used = false,
bool $with_pseudo = false
): bool {
$fq_class_name = $method_id->fq_class_name;
$method_name = $method_id->method_name;
if ($use_method_existence_provider && $this->existence_provider->has($fq_class_name)) {
$method_exists = $this->existence_provider->doesMethodExist(
$fq_class_name,
$method_name,
$source,
$code_location,
);
if ($method_exists !== null) {
return $method_exists;
}
}
$old_method_id = null;
$fq_class_name = strtolower($this->classlikes->getUnAliasedName($fq_class_name));
try {
$class_storage = $this->classlike_storage_provider->get($fq_class_name);
} catch (InvalidArgumentException $e) {
return false;
}
if ($class_storage->is_enum) {
if ($method_name === 'cases') {
return true;
}
if ($class_storage->enum_type
&& in_array($method_name, ['from', 'tryFrom'], true)
) {
return true;
}
}
$source_file_path = $source ? $source->getFilePath() : $source_file_path;
$calling_class_name = $source ? $source->getFQCLN() : null;
if (!$calling_class_name && $calling_method_id) {
$calling_class_name = explode('::', $calling_method_id)[0];
}
$declaring_method_id = $class_storage->declaring_method_ids[$method_name] ?? null;
if ($declaring_method_id === null && $with_pseudo) {
$declaring_method_id = $class_storage->declaring_pseudo_method_ids[$method_name] ?? null;
}
if ($declaring_method_id !== null) {
if ($calling_method_id === strtolower((string) $declaring_method_id)) {
return true;
}
$declaring_fq_class_name = strtolower($declaring_method_id->fq_class_name);
if ($declaring_fq_class_name !== strtolower((string) $calling_class_name)) {
if ($calling_method_id) {
$this->file_reference_provider->addMethodReferenceToClass(
$calling_method_id,
$declaring_fq_class_name,
);
} elseif ($source_file_path) {
$this->file_reference_provider->addNonMethodReferenceToClass(
$source_file_path,
$declaring_fq_class_name,
);
}
}
if ((string) $method_id !== (string) $declaring_method_id
&& $class_storage->user_defined
&& isset($class_storage->potential_declaring_method_ids[$method_name])
) {
foreach ($class_storage->potential_declaring_method_ids[$method_name] as $potential_id => $_) {
if ($calling_method_id) {
$this->file_reference_provider->addMethodReferenceToClassMember(
$calling_method_id,
$potential_id,
$is_used,
);
} elseif ($source_file_path) {
$this->file_reference_provider->addFileReferenceToClassMember(
$source_file_path,
$potential_id,
$is_used,
);
}
}
} else {
if ($calling_method_id) {
$this->file_reference_provider->addMethodReferenceToClassMember(
$calling_method_id,
strtolower((string) $declaring_method_id),
$is_used,
);
} elseif ($source_file_path) {
$this->file_reference_provider->addFileReferenceToClassMember(
$source_file_path,
strtolower((string) $declaring_method_id),
$is_used,
);
}
}
if ($this->collect_locations && $code_location) {
$this->file_reference_provider->addCallingLocationForClassMethod(
$code_location,
strtolower((string) $declaring_method_id),
);
}
foreach ($class_storage->class_implements as $fq_interface_name) {
$interface_method_id_lc = strtolower($fq_interface_name . '::' . $method_name);
if ($this->collect_locations && $code_location) {
$this->file_reference_provider->addCallingLocationForClassMethod(
$code_location,
$interface_method_id_lc,
);
}
if ($calling_method_id) {
$this->file_reference_provider->addMethodReferenceToClassMember(
$calling_method_id,
$interface_method_id_lc,
$is_used,
);
} elseif ($source_file_path) {
$this->file_reference_provider->addFileReferenceToClassMember(
$source_file_path,
$interface_method_id_lc,
$is_used,
);
}
}
$declaring_method_class = $declaring_method_id->fq_class_name;
$declaring_method_name = $declaring_method_id->method_name;
$declaring_class_storage = $this->classlike_storage_provider->get($declaring_method_class);
if (isset($declaring_class_storage->overridden_method_ids[$declaring_method_name])) {
$overridden_method_ids = $declaring_class_storage->overridden_method_ids[$declaring_method_name];
foreach ($overridden_method_ids as $overridden_method_id) {
if ($this->collect_locations && $code_location) {
$this->file_reference_provider->addCallingLocationForClassMethod(
$code_location,
strtolower((string) $overridden_method_id),
);
}
if ($calling_method_id) {
// also store failures in case the method is added later
$this->file_reference_provider->addMethodReferenceToClassMember(
$calling_method_id,
strtolower((string) $overridden_method_id),
$is_used,
);
} elseif ($source_file_path) {
$this->file_reference_provider->addFileReferenceToClassMember(
$source_file_path,
strtolower((string) $overridden_method_id),
$is_used,
);
}
}
}
return true;
}
if ($source_file_path && $fq_class_name !== strtolower((string) $calling_class_name)) {
if ($calling_method_id) {
$this->file_reference_provider->addMethodReferenceToClass(
$calling_method_id,
$fq_class_name,
);
} else {
$this->file_reference_provider->addNonMethodReferenceToClass(
$source_file_path,
$fq_class_name,
);
}
}
if ($class_storage->abstract && isset($class_storage->overridden_method_ids[$method_name])) {
return true;
}
// support checking oldstyle constructors
if ($method_name === '__construct') {
$method_name_parts = explode('\\', $fq_class_name);
$old_constructor_name = array_pop($method_name_parts);
$old_method_id = $fq_class_name . '::' . $old_constructor_name;
}
if (!$class_storage->user_defined
&& (InternalCallMapHandler::inCallMap((string) $method_id)
|| ($old_method_id && InternalCallMapHandler::inCallMap($old_method_id)))
) {
return true;
}
foreach ($class_storage->parent_classes + $class_storage->used_traits as $potential_future_declaring_fqcln) {
$potential_id = strtolower($potential_future_declaring_fqcln) . '::' . $method_name;
if ($calling_method_id) {
// also store failures in case the method is added later
$this->file_reference_provider->addMethodReferenceToMissingClassMember(
$calling_method_id,
$potential_id,
);
} elseif ($source_file_path) {
$this->file_reference_provider->addFileReferenceToMissingClassMember(
$source_file_path,
$potential_id,
);
}
}
if ($calling_method_id) {
// also store failures in case the method is added later
$this->file_reference_provider->addMethodReferenceToMissingClassMember(
$calling_method_id,
strtolower((string) $method_id),
);
} elseif ($source_file_path) {
$this->file_reference_provider->addFileReferenceToMissingClassMember(
$source_file_path,
strtolower((string) $method_id),
);
}
return false;
}
/**
* @param list<PhpParser\Node\Arg> $args
* @return list<FunctionLikeParameter>
*/
public function getMethodParams(
MethodIdentifier $method_id,
?StatementsSource $source = null,
?array $args = null,
?Context $context = null
): array {
$fq_class_name = $method_id->fq_class_name;
$method_name = $method_id->method_name;
if ($this->params_provider->has($fq_class_name)) {
$method_params = $this->params_provider->getMethodParams(
$fq_class_name,
$method_name,
$args,
$source,
$context,
);
if ($method_params !== null) {
return $method_params;
}
}
$declaring_method_id = $this->getDeclaringMethodId($method_id, true);
$callmap_id = $declaring_method_id ?? $method_id;
// functions
if (InternalCallMapHandler::inCallMap((string) $callmap_id)) {
$class_storage = $this->classlike_storage_provider->get($callmap_id->fq_class_name);
$declaring_method_name = $declaring_method_id->method_name ?? $method_name;
if (!$class_storage->stubbed || empty($class_storage->methods[$declaring_method_name]->stubbed)) {
$function_callables = InternalCallMapHandler::getCallablesFromCallMap((string) $callmap_id);
if ($function_callables === null) {
throw new UnexpectedValueException(
'Not expecting $function_callables to be null for ' . $callmap_id,
);
}
if (!$source || $args === null || count($function_callables) === 1) {
assert($function_callables[0]->params !== null);
return $function_callables[0]->params;
}
if ($context && $source instanceof StatementsAnalyzer) {
$was_inside_call = $context->inside_call;
$context->inside_call = true;
foreach ($args as $arg) {
ExpressionAnalyzer::analyze(
$source,
$arg->value,
$context,
);
}
$context->inside_call = $was_inside_call;
}
$matching_callable = InternalCallMapHandler::getMatchingCallableFromCallMapOptions(
$source->getCodebase(),
$function_callables,
$args,
$source->getNodeTypeProvider(),
(string) $callmap_id,
);
assert($matching_callable->params !== null);
return $matching_callable->params;
}
}
if ($declaring_method_id) {
$storage = $this->getStorage($declaring_method_id, true);
$params = $storage->params;
if ($storage->has_docblock_param_types) {
return $params;
}
$appearing_method_id = $this->getAppearingMethodId($declaring_method_id);
if (!$appearing_method_id) {
return $params;
}
$appearing_fq_class_name = $appearing_method_id->fq_class_name;
$appearing_method_name = $appearing_method_id->method_name;
$class_storage = $this->classlike_storage_provider->get($appearing_fq_class_name);
if (!isset($class_storage->overridden_method_ids[$appearing_method_name])) {
return $params;
}
if (!isset($class_storage->documenting_method_ids[$appearing_method_name])) {
return $params;
}
$overridden_method_id = $class_storage->documenting_method_ids[$appearing_method_name];
$overridden_storage = $this->getStorage($overridden_method_id);
$overriding_fq_class_name = $overridden_method_id->fq_class_name;
foreach ($params as $i => $param) {
if (isset($overridden_storage->params[$i]->type)
&& $overridden_storage->params[$i]->has_docblock_type
) {
$params[$i] = clone $param;
/** @var Union $params[$i]->type */
$params[$i]->type = $overridden_storage->params[$i]->type;
if ($source) {
$overridden_class_storage = $this->classlike_storage_provider->get($overriding_fq_class_name);
$params[$i]->type = self::localizeType(
$source->getCodebase(),
$params[$i]->type,
$appearing_fq_class_name,
$overridden_class_storage->name,
);
}
if ($params[$i]->signature_type
&& $params[$i]->signature_type->isNullable()
) {
$params[$i]->type = $params[$i]->type->getBuilder()->addType(new TNull)->freeze();
}
$params[$i]->type_location = $overridden_storage->params[$i]->type_location;
}
}
return $params;
}
throw new UnexpectedValueException('Cannot get method params for ' . $method_id);
}
public static function localizeType(
Codebase $codebase,
Union $type,
string $appearing_fq_class_name,
string $base_fq_class_name
): Union {
$class_storage = $codebase->classlike_storage_provider->get($appearing_fq_class_name);
$extends = $class_storage->template_extended_params;
if (!$extends) {
return $type;
}
(new TypeLocalizer(
$extends,
$base_fq_class_name,
))->traverse($type);
return $type;
}
/**
* @param array<string, array<string, Union>> $extends
* @return list<Atomic>
*/
public static function getExtendedTemplatedTypes(
TTemplateParam $atomic_type,
array $extends
): array {
$extra_added_types = [];
if (isset($extends[$atomic_type->defining_class][$atomic_type->param_name])) {
$extended_param = $extends[$atomic_type->defining_class][$atomic_type->param_name];
foreach ($extended_param->getAtomicTypes() as $extended_atomic_type) {
if ($extended_atomic_type instanceof TTemplateParam) {
$extra_added_types = [...$extra_added_types, ...self::getExtendedTemplatedTypes(
$extended_atomic_type,
$extends,
)];
} else {
$extra_added_types[] = $extended_atomic_type;
}
}
} else {
$extra_added_types[] = $atomic_type;
}
return $extra_added_types;
}
public function isVariadic(MethodIdentifier $method_id): bool
{
$declaring_method_id = $this->getDeclaringMethodId($method_id);
if (!$declaring_method_id) {
return false;
}
return $this->getStorage($declaring_method_id)->variadic;
}
/**
* @param list<PhpParser\Node\Arg>|null $args
*/
public function getMethodReturnType(
MethodIdentifier $method_id,
?string &$self_class,
?SourceAnalyzer $source_analyzer = null,
?array $args = null,
?TemplateResult $template_result = null
): ?Union {
$original_fq_class_name = $method_id->fq_class_name;
$original_method_name = $method_id->method_name;
$adjusted_fq_class_name = $this->classlikes->getUnAliasedName($original_fq_class_name);
if ($adjusted_fq_class_name !== $original_fq_class_name) {
$original_fq_class_name = strtolower($adjusted_fq_class_name);
}
$original_class_storage = $this->classlike_storage_provider->get($original_fq_class_name);
if (isset($original_class_storage->pseudo_methods[$original_method_name])) {
return $original_class_storage->pseudo_methods[$original_method_name]->return_type;
}
$declaring_method_id = $this->getDeclaringMethodId($method_id);
if (!$declaring_method_id) {
return null;
}
$appearing_method_id = $this->getAppearingMethodId($method_id);
if (!$appearing_method_id) {
$class_storage = $this->classlike_storage_provider->get($original_fq_class_name);
if ($class_storage->abstract && isset($class_storage->overridden_method_ids[$original_method_name])) {
$appearing_method_id = reset($class_storage->overridden_method_ids[$original_method_name]);
} else {
return null;
}
}
$appearing_fq_class_name = $appearing_method_id->fq_class_name;
$appearing_method_name = $appearing_method_id->method_name;
$appearing_fq_class_storage = $this->classlike_storage_provider->get($appearing_fq_class_name);
if ($appearing_fq_class_name === 'UnitEnum'
&& $original_class_storage->is_enum
) {
if ($original_method_name === 'cases') {
if ($original_class_storage->enum_cases === []) {
return Type::getEmptyArray();
}
$types = [];
foreach ($original_class_storage->enum_cases as $case_name => $_) {
$types[] = new Union([new TEnumCase($original_fq_class_name, $case_name)]);
}
$list = new TKeyedArray($types, null, null, true);
return new Union([$list]);
}
}
if ($appearing_fq_class_name === 'BackedEnum'
&& $original_class_storage->is_enum
&& $original_class_storage->enum_type
) {
if (($original_method_name === 'from'
|| $original_method_name === 'tryfrom'
) && $source_analyzer
&& isset($args[0])
&& ($first_arg_type = $source_analyzer->getNodeTypeProvider()->getType($args[0]->value))
) {
$types = [];
foreach ($original_class_storage->enum_cases as $case_name => $case_storage) {
$case_value = $case_storage->getValue($this->classlikes);
if (UnionTypeComparator::isContainedBy(
$source_analyzer->getCodebase(),
is_int($case_value) ?
Type::getInt(false, $case_value) :
Type::getString($case_value),
$first_arg_type,
)) {
$types[] = new TEnumCase($original_fq_class_name, $case_name);
}
}
if ($types) {
if ($original_method_name === 'tryfrom') {
$types[] = new TNull();
}
return new Union($types);
}
return $original_method_name === 'tryfrom' ? Type::getNull() : Type::getNever();
}
}
if (!$appearing_fq_class_storage->user_defined
&& !$appearing_fq_class_storage->stubbed
&& InternalCallMapHandler::inCallMap((string) $appearing_method_id)
) {
if ((string) $appearing_method_id === 'Closure::fromcallable'
&& isset($args[0])
&& $source_analyzer
&& ($first_arg_type = $source_analyzer->getNodeTypeProvider()->getType($args[0]->value))
&& $first_arg_type->isSingle()
) {
foreach ($first_arg_type->getAtomicTypes() as $atomic_type) {
if ($atomic_type instanceof TCallable
|| $atomic_type instanceof TClosure
) {
$callable_type = $atomic_type;
return new Union([new TClosure(
'Closure',
$callable_type->params,
$callable_type->return_type,
)]);
}
if ($atomic_type instanceof TNamedObject
&& $this->methodExists(
new MethodIdentifier($atomic_type->value, '__invoke'),
)
) {
$invokable_storage = $this->getStorage(
new MethodIdentifier($atomic_type->value, '__invoke'),
);
return new Union([new TClosure(
'Closure',
$invokable_storage->params,
$invokable_storage->return_type,
)]);
}
}
}
$callmap_callables = InternalCallMapHandler::getCallablesFromCallMap((string) $appearing_method_id);
if (!$callmap_callables || $callmap_callables[0]->return_type === null) {
throw new UnexpectedValueException('Shouldn’t get here');
}
$return_type_candidate = $callmap_callables[0]->return_type;
if ($return_type_candidate->isFalsable()) {
return $return_type_candidate->setProperties([
'ignore_falsable_issues' => true,
]);
}
return $return_type_candidate;
}
$class_storage = $this->classlike_storage_provider->get($appearing_fq_class_name);
$storage = $this->getStorage($declaring_method_id);
$candidate_type = $storage->return_type;
if ($candidate_type && $candidate_type->isVoid()) {
return $candidate_type;
}
if (isset($class_storage->documenting_method_ids[$appearing_method_name])) {
$overridden_method_id = $class_storage->documenting_method_ids[$appearing_method_name];
// special override to allow inference of Iterator types
if ($overridden_method_id->fq_class_name === 'Iterator'
&& $storage->return_type
&& $storage->return_type === $storage->signature_return_type
) {
return $storage->return_type;
}
$overridden_storage = $this->getStorage($overridden_method_id);
if ($overridden_storage->return_type) {
if ($overridden_storage->return_type->isNull()) {
return Type::getVoid();
}
if (!$candidate_type || !$source_analyzer) {
$self_class = $overridden_method_id->fq_class_name;
return $overridden_storage->return_type;
}
if ($candidate_type->getId() === $overridden_storage->return_type->getId()) {
$self_class = $appearing_fq_class_storage->name;
return $candidate_type;
}
$overridden_class_storage =
$this->classlike_storage_provider->get($overridden_method_id->fq_class_name);
$overridden_storage_return_type = TypeExpander::expandUnion(
$source_analyzer->getCodebase(),
$overridden_storage->return_type,
$overridden_method_id->fq_class_name,
$appearing_fq_class_name,
$overridden_class_storage->parent_class,
true,
false,
$storage->final,
);
$old_contained_by_new = UnionTypeComparator::isContainedBy(
$source_analyzer->getCodebase(),
$candidate_type,
$overridden_storage_return_type,
);
$new_contained_by_old = UnionTypeComparator::isContainedBy(
$source_analyzer->getCodebase(),
$overridden_storage_return_type,
$candidate_type,
);
if ((!$old_contained_by_new && !$new_contained_by_old)
|| ($old_contained_by_new && $new_contained_by_old)
) {
$found_generic_params = ClassTemplateParamCollector::collect(
$source_analyzer->getCodebase(),
$appearing_fq_class_storage,
$appearing_fq_class_storage,
$appearing_method_name,
null,
true,
);
if ($found_generic_params) {
$passed_template_result = $template_result;
$template_result = new TemplateResult(
[],
$found_generic_params,
);
if ($passed_template_result !== null) {
$template_result = $template_result->merge($passed_template_result);
}
$overridden_storage_return_type = TemplateInferredTypeReplacer::replace(
$overridden_storage_return_type,
$template_result,
$source_analyzer->getCodebase(),
);
}
$attempted_intersection = null;
if ($old_contained_by_new) { //implicitly $new_contained_by_old as well
try {
$attempted_intersection = Type::intersectUnionTypes(
$candidate_type,
$overridden_storage_return_type,
$source_analyzer->getCodebase(),
);
} catch (InvalidArgumentException $e) {
// TODO: fix
}
} else {
$attempted_intersection = Type::intersectUnionTypes(
$overridden_storage_return_type,
$candidate_type,
$source_analyzer->getCodebase(),
);
}
if ($attempted_intersection) {
$self_class = $overridden_method_id->fq_class_name;
return $attempted_intersection;
}
$self_class = $appearing_fq_class_storage->name;
return $candidate_type;
}
if ($old_contained_by_new) {
$self_class = $appearing_fq_class_storage->name;
return $candidate_type;
}
$self_class = $overridden_method_id->fq_class_name;
return $overridden_storage_return_type;
}
}
if ($candidate_type) {
$self_class = $appearing_fq_class_storage->name;
return $candidate_type;
}
if (!isset($class_storage->overridden_method_ids[$appearing_method_name])) {
return null;
}
foreach ($class_storage->overridden_method_ids[$appearing_method_name] as $overridden_method_id) {
$overridden_storage = $this->getStorage($overridden_method_id);
if ($overridden_storage->return_type) {
if ($overridden_storage->return_type->isNull()) {
if ($candidate_type && !$candidate_type->isVoid()) {
return null;
}
$candidate_type = Type::getVoid();
continue;
}
$fq_overridden_class = $overridden_method_id->fq_class_name;
$overridden_class_storage =
$this->classlike_storage_provider->get($fq_overridden_class);
$overridden_return_type = $overridden_storage->return_type;
$self_class = $overridden_class_storage->name;
if ($candidate_type && $source_analyzer && !$candidate_type->isMixed()) {
$old_contained_by_new = UnionTypeComparator::isContainedBy(
$source_analyzer->getCodebase(),
$candidate_type,
$overridden_return_type,
);
$new_contained_by_old = UnionTypeComparator::isContainedBy(
$source_analyzer->getCodebase(),
$overridden_return_type,
$candidate_type,
);
if ((!$old_contained_by_new && !$new_contained_by_old)
|| ($old_contained_by_new && $new_contained_by_old)
) {
$attempted_intersection = Type::intersectUnionTypes(
$candidate_type,
$overridden_return_type,
$source_analyzer->getCodebase(),
);
if ($attempted_intersection) {
$candidate_type = $attempted_intersection;
continue;
}
return null;
}
if ($old_contained_by_new) {
continue;
}
}
$candidate_type = $overridden_return_type;
}
}
return $candidate_type;
}
public function getMethodReturnsByRef(MethodIdentifier $method_id): bool
{
$method_id = $this->getDeclaringMethodId($method_id);
if (!$method_id) {
return false;
}
$fq_class_storage = $this->classlike_storage_provider->get($method_id->fq_class_name);
if (!$fq_class_storage->user_defined && InternalCallMapHandler::inCallMap((string) $method_id)) {
return false;
}
return $this->getStorage($method_id)->returns_by_ref;
}
public function getMethodReturnTypeLocation(
MethodIdentifier $method_id,
?CodeLocation &$defined_location = null
): ?CodeLocation {
$method_id = $this->getDeclaringMethodId($method_id);
if ($method_id === null) {
return null;
}
$storage = $this->getStorage($method_id);
// if function exists in stubs and in analyzed code
// use the return type location of the analyzed code instead of the stubbed location
if ($storage->stubbed) {
return null;
}
if (!$storage->return_type_location) {
$overridden_method_ids = $this->getOverriddenMethodIds($method_id);
foreach ($overridden_method_ids as $overridden_method_id) {
$overridden_storage = $this->getStorage($overridden_method_id);
if ($overridden_storage->return_type_location && !$overridden_storage->stubbed) {
$defined_location = $overridden_storage->return_type_location;
break;
}
}
}
return $storage->return_type_location;
}
/**
* @param lowercase-string $method_name_lc
* @param lowercase-string $declaring_method_name_lc
*/
public function setDeclaringMethodId(
string $fq_class_name,
string $method_name_lc,
string $declaring_fq_class_name,
string $declaring_method_name_lc
): void {
$class_storage = $this->classlike_storage_provider->get($fq_class_name);
$class_storage->declaring_method_ids[$method_name_lc] = new MethodIdentifier(
$declaring_fq_class_name,
$declaring_method_name_lc,
);
}
/**
* @param lowercase-string $method_name_lc
* @param lowercase-string $appearing_method_name_lc
*/
public function setAppearingMethodId(
string $fq_class_name,
string $method_name_lc,