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FunctionLikeDeclarationType.php
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FunctionLikeDeclarationType.php
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<?php
declare(strict_types=1);
namespace Phan\Language\Type;
use ast\Node;
use Closure;
use Generator;
use Phan\CodeBase;
use Phan\Language\Context;
use Phan\Language\Element\AddressableElementInterface;
use Phan\Language\Element\Comment;
use Phan\Language\Element\FunctionInterface;
use Phan\Language\Element\Parameter;
use Phan\Language\FileRef;
use Phan\Language\FQSEN;
use Phan\Language\FQSEN\FullyQualifiedFunctionName;
use Phan\Language\Scope\ClosedScope;
use Phan\Language\Type;
use Phan\Language\UnionType;
use Phan\Library\StringUtil;
use Phan\PluginV3;
/**
* Phan's base class for representations of `callable(MyClass):MyOtherClass` and `Closure(MyClass):MyOtherClass`
* @phan-file-suppress PhanUnusedPublicMethodParameter
* @phan-pure
*/
abstract class FunctionLikeDeclarationType extends Type implements FunctionInterface
{
// Subclasses will override this
public const NAME = '';
/**
* The file and location where this function-like Type was declared.
* (e.g. in a doc comment, as a closure, etc).
* @var FileRef
*/
private $file_ref;
/**
* Describes information that was parsed about the parameters of this function-like Type.
* (Name and UnionType)
* @var list<ClosureDeclarationParameter>
*/
private $params;
/**
* The return type of this function-like Type.
* @var UnionType
*/
private $return_type;
/**
* Does this function-like type return a reference?
* Currently only possible for real closures, not for callable declarations declared in phpdoc.
* @var bool
*/
private $returns_reference;
// computed properties
/**
* @var int
* The number of required parameters for this callable/closure
*/
private $required_param_count;
/**
* @var int
* The number of optional parameters for this callable/closure.
* Note that this is set to a large number in methods using varargs.
*/
private $optional_param_count;
/**
* Is this a function declaration variadic?
* @var bool
*/
private $is_variadic;
// end computed properties
/**
* @param list<ClosureDeclarationParameter> $params
* @param UnionType $return_type
*/
public function __construct(FileRef $file_ref, array $params, UnionType $return_type, bool $returns_reference, bool $is_nullable)
{
parent::__construct('\\', static::NAME, [], $is_nullable);
$this->file_ref = FileRef::copyFileRef($file_ref);
$this->params = $params;
$this->return_type = $return_type;
$this->returns_reference = $returns_reference;
$required_param_count = 0;
$optional_param_count = 0;
// TODO: Warn about required after optional
foreach ($params as $param) {
if ($param->isOptional()) {
$optional_param_count++;
if ($param->isVariadic()) {
$this->is_variadic = true;
$optional_param_count = FunctionInterface::INFINITE_PARAMETERS - $required_param_count;
break;
}
} else {
$required_param_count++;
}
}
$this->required_param_count = $required_param_count;
$this->optional_param_count = $optional_param_count;
}
/**
* Used when serializing this type in union types.
* @return string (e.g. "Closure(int,string&...):string[]")
*/
public function __toString(): string
{
return $this->memoize(__FUNCTION__, function (): string {
$parts = [];
foreach ($this->params as $value) {
$parts[] = $value->__toString();
}
$return_type = $this->return_type;
$return_type_string = $return_type->__toString();
if ($return_type->typeCount() >= 2 || \substr($return_type_string, -1) === ']') {
$return_type_string = "($return_type_string)";
}
return ($this->is_nullable ? '?' : '') . static::NAME . '(' . \implode(',', $parts) . '):' . $return_type_string;
});
}
/**
* @return never
*/
public function __clone()
{
throw new \AssertionError('Should not clone ' . static::class);
}
/**
* @unused-param $code_base
* @return bool
* True if this type is a callable or a Closure or a FunctionLikeDeclarationType
*/
public function isCallable(CodeBase $code_base): bool
{
return true;
}
/**
* @return ?ClosureDeclarationParameter the parameter which the argument at the index $i would be passed in as
*/
public function getClosureParameterForArgument(int $i): ?ClosureDeclarationParameter
{
$result = $this->params[$i] ?? null;
if (!$result) {
// @phan-suppress-next-line PhanPossiblyFalseTypeReturn is_variadic implies at least one parameter exists.
return $this->is_variadic ? \end($this->params) : null;
}
return $result;
}
/**
* Checks if this callable can cast to the other $type, ignoring whether these are nullable.
*
* It can be cast if this can be passed to any usage of $type and satisfy expectation about parameters and returned union types.
*
* -e.g. `Closure(mixed):SubClass` can be used when a `Closure(int):BaseClass` is expected.
*/
public function canCastToNonNullableFunctionLikeDeclarationType(FunctionLikeDeclarationType $type, CodeBase $code_base): bool
{
if ($this->required_param_count > $type->required_param_count) {
return false;
}
if ($this->getNumberOfParameters() < $type->getNumberOfParameters()) {
return false;
}
if ($this->returns_reference !== $type->returns_reference) {
return false;
}
// TODO: Allow nullable/null to cast to void?
if (!$this->return_type->canCastToUnionType($type->return_type, $code_base)) {
return false;
}
foreach ($this->params as $i => $param) {
$other_param = $type->getClosureParameterForArgument($i);
if (!$other_param) {
break;
}
if (!$param->canCastToParameterIgnoringVariadic($other_param, $code_base)) {
return false;
}
}
return true;
}
/**
* Checks if this callable can cast to the other $type, ignoring whether these are nullable.
*
* It can be cast if this can be passed to any usage of $type and satisfy expectation about parameters and returned union types.
*
* -e.g. `Closure(mixed):T` can be used when a `Closure(int):\BaseClass` is expected.
*
* @see self::canCastToNonNullableType() - This is based on that.
*/
protected function canCastToNonNullableTypeHandlingTemplates(Type $type, CodeBase $code_base): bool
{
if (!($type instanceof FunctionLikeDeclarationType)) {
return parent::canCastToNonNullableTypeHandlingTemplates($type, $code_base);
}
if ($this->required_param_count > $type->required_param_count) {
return false;
}
if ($this->getNumberOfParameters() < $type->getNumberOfParameters()) {
return false;
}
if ($this->returns_reference !== $type->returns_reference) {
return false;
}
// TODO: Allow nullable/null to cast to void?
if (!$this->return_type->asExpandedTypes($code_base)->canCastToUnionType($type->return_type, $code_base)) {
return false;
}
foreach ($this->params as $i => $param) {
$other_param = $type->getClosureParameterForArgument($i);
if (!$other_param) {
break;
}
if (!$param->canCastToParameterHandlingTemplatesIgnoringVariadic($other_param, $code_base)) {
return false;
}
}
return true;
}
/**
* @override (Don't include \Closure in the expanded types. It interferes with type casting checking)
* @param CodeBase $code_base @unused-param
* @unused-param $recursion_depth
*/
public function asExpandedTypes(
CodeBase $code_base,
int $recursion_depth = 0
): UnionType {
return $this->asPHPDocUnionType();
}
/**
* @override (Don't include \Closure in the expanded types. It interferes with type casting checking)
* @param CodeBase $code_base @unused-param
* @unused-param $recursion_depth
*/
public function asExpandedTypesPreservingTemplate(
CodeBase $code_base,
int $recursion_depth = 0
): UnionType {
return $this->asPHPDocUnionType();
}
/**
* @param bool $is_nullable
* Set to true if the type should be nullable, else pass
* false
*
* @return Type
* A new type that is a copy of this type but with the
* given nullability value.
*
* @override - Avoid calling make() , which is not compatible with FunctionLikeDeclarationType::__construct
* (E.g. from UnionType->asNormalizedTypes)
*/
public function withIsNullable(bool $is_nullable): Type
{
if ($is_nullable === $this->is_nullable) {
return $this;
}
return new static(
$this->file_ref,
$this->params,
$this->return_type,
$this->returns_reference,
$is_nullable
);
}
/**
* Returns true if this contains a type that is definitely non-callable
* e.g. returns true for false, array, int
* returns false for callable, array, object, iterable, T, etc.
*/
public function isDefiniteNonCallableType(CodeBase $code_base): bool
{
return false;
}
/**
* @param CodeBase $code_base @unused-param
* @param Context $context @unused-param
*/
public function asFunctionInterfaceOrNull(CodeBase $code_base, Context $context, bool $warn = true): ?FunctionInterface
{
return $this;
}
/**
* @return Generator<mixed,Type> (void => $inner_type)
* @override
*/
public function getReferencedClasses(): Generator
{
foreach ($this->params as $param) {
yield from $param->getNonVariadicUnionType()->getReferencedClasses();
}
yield from $this->return_type->getReferencedClasses();
}
/**
* Returns a generator that yields all types and subtypes in the phpdoc type set.
*
* For example, for the union type `MyClass[]|false`, 3 types will be generated: `MyClass[]`, `MyClass`, and `false`.
* This does not deduplicate types.
*
* @return Generator<Type>
*/
public function getTypesRecursively(): Generator
{
yield $this;
foreach ($this->params as $param) {
yield from $param->getNonVariadicUnionType()->getTypesRecursively();
}
yield from $this->return_type->getTypesRecursively();
}
////////////////////////////////////////////////////////////////////////////////
// Begin FunctionInterface overrides. Most of these are intentionally no-ops
////////////////////////////////////////////////////////////////////////////////
/**
* @param FileRef $file_ref @unused-param
* @override
*/
public function addReference(FileRef $file_ref): void
{
}
/**
* @param CodeBase $code_base @unused-param
* @override
*/
public function getReferenceCount(CodeBase $code_base): int
{
return 1;
}
/** @override */
public function getReferenceList(): array
{
return [];
}
/** @override */
public function isPrivate(): bool
{
return false;
}
/** @override */
public function isProtected(): bool
{
return false;
}
/** @override */
public function isPublic(): bool
{
return true;
}
/**
* @return bool true if this element's visibility
* is strictly more visible than $other (public > protected > private)
*/
public function isStrictlyMoreVisibleThan(AddressableElementInterface $other): bool
{
return false;
}
/**
* @unused-param $fqsen
* @return never
* @override
*/
public function setFQSEN(FQSEN $fqsen): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @unused-param $code_base
* @phan-return \Generator<static>
* @override
*/
public function alternateGenerator(CodeBase $code_base): Generator
{
yield $this;
}
/**
* @unused-param $code_base
* @override
*/
public function analyze(Context $context, CodeBase $code_base): Context
{
return $context;
}
/**
* @override
* @return never
* @param list<Node|int|string|float> $args
*/
public function analyzeFunctionCall(CodeBase $code_base, Context $context, array $args, Node $node = null): void
{
throw new \AssertionError('should not call ' . __METHOD__);
}
/**
* @unused-param $context
* @unused-param $code_base
* @param Parameter[] $parameter_list @unused-param
* @return never
* @override
*/
public function analyzeWithNewParams(Context $context, CodeBase $code_base, array $parameter_list): Context
{
throw new \AssertionError('should not call ' . __METHOD__);
}
/**
* @override
* @unused-param $parameter
* @return never
*/
public function appendParameter(Parameter $parameter): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @override
* @return never
*/
public function clearParameterList(): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @override
* @return never
*/
public function cloneParameterList(): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @param CodeBase $code_base
* @override
*/
public function ensureScopeInitialized(CodeBase $code_base): void
{
}
/** @override */
public function asFunctionLikeDeclarationType(): FunctionLikeDeclarationType
{
return $this;
}
/** @override */
public function getComment(): ?Comment
{
return null;
}
/** @override */
public function getDeprecationReason(): string
{
return '';
}
/**
* @override
* @param list<Node|int|string|float> $args
* @return never
*/
public function getDependentReturnType(CodeBase $code_base, Context $context, array $args): UnionType
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/** @override */
public function hasDependentReturnType(): bool
{
return false;
}
// TODO: Maybe create mock FQSENs for these instead.
/** @override */
public function getElementNamespace(): string
{
return '\\';
}
/** @override */
public function getFQSEN()
{
$hash = \substr(\md5($this->__toString()), 0, 12);
// @phan-suppress-next-line PhanThrowTypeAbsentForCall this is valid
return FullyQualifiedFunctionName::fromFullyQualifiedString('\\closure_phpdoc' . $hash);
}
/**
* @unused-param $show_args
* @override
*/
public function getRepresentationForIssue(bool $show_args = false): string
{
// Represent this as "Closure(int):void" in issue messages instead of \closure_phpdoc_abcd123456Df
return $this->__toString();
}
/** @override */
public function getNameForIssue(): string
{
// Represent this as "Closure(int):void" in issue messages instead of \closure_phpdoc_abcd123456Df
return $this->__toString();
}
/** @override */
public function hasReturn(): bool
{
return true;
}
/**
* @override
* @return never
*/
public function getInternalScope(): ClosedScope
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
public function getNode(): ?Node
{
return null;
}
/** @override */
public function getNumberOfRequiredParameters(): int
{
return $this->required_param_count;
}
/** @override */
public function getNumberOfOptionalParameters(): int
{
return $this->optional_param_count;
}
/** @override */
public function getNumberOfRequiredRealParameters(): int
{
return $this->required_param_count;
}
/** @override */
public function getNumberOfOptionalRealParameters(): int
{
return $this->optional_param_count;
}
/** @override */
public function getNumberOfParameters(): int
{
return $this->optional_param_count + $this->required_param_count;
}
/** @override */
public function getOutputReferenceParamNames(): array
{
return [];
}
/** @override */
public function getPHPDocParameterTypeMap(): array
{
// Implement?
return [];
}
/** @override */
public function getPHPDocReturnType(): ?UnionType
{
return $this->return_type;
}
/**
* @override
*/
public function getParameterForCaller(int $i): ?Parameter
{
$list = $this->params;
if (\count($list) === 0) {
return null;
}
$parameter = $list[$i] ?? null;
if ($parameter) {
// This is already not variadic
return $parameter->asNonVariadicRegularParameter($i);
}
return null;
}
/**
* @override
*/
public function getRealParameterForCaller(int $i): ?Parameter
{
// FunctionLikeDeclarationType doesn't know if the phpdoc type is the real union type.
//
// This could instead call setUnionType and setDefaultValueType to the empty union type to avoid false positives about passing in null,
// but would miss some actual bugs.
return $this->getParameterForCaller($i);
}
/**
* @return list<Parameter>
*/
public function getParameterList(): array
{
$result = [];
foreach ($this->params as $i => $param) {
$result[] = $param->asRegularParameter($i);
}
return $result;
}
/**
* @param list<Parameter> $parameter_list
* @return never
*/
public function setParameterList(array $parameter_list): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @internal - moves real parameter defaults to the inferred phpdoc parameters
* @return never
*/
public function inheritRealParameterDefaults(): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
public function getRealParameterList(): array
{
return $this->getParameterList();
}
public function getRealReturnType(): UnionType
{
return $this->return_type;
}
public function getOwnThrowsUnionType(): UnionType
{
return UnionType::empty();
}
public function getFullThrowsUnionType(): UnionType
{
return $this->getOwnThrowsUnionType();
}
public function hasFunctionCallAnalyzer(): bool
{
return false;
}
public function isFromPHPDoc(): bool
{
return true;
}
public function isNSInternal(CodeBase $code_base): bool
{
return false;
}
public function isNSInternalAccessFromContext(CodeBase $code_base, Context $context): bool
{
return false;
}
public function isReturnTypeUndefined(): bool
{
return false;
}
public function needsRecursiveAnalysis(): bool
{
return false;
}
/**
* @return never
*/
public function recordOutputReferenceParamName(string $parameter_name): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
public function returnsRef(): bool
{
return $this->returns_reference;
}
/**
* @unused
* @return never
*/
public function setComment(Comment $comment): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @return never
*/
public function setFunctionCallAnalyzer(Closure $analyzer): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @return never
*/
public function addFunctionCallAnalyzer(Closure $closure, PluginV3 $plugin = null): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @return never
*/
public function setDependentReturnTypeClosure(Closure $analyzer): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @override
* @unused-param $has_return
* @return never
*/
public function setHasReturn(bool $has_return): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @override
* @unused-param $has_yield
* @return never
*/
public function setHasYield(bool $has_yield): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
public function hasYield(): bool
{
return false;
}
/**
* @override
* @unused-param $has_static_variable
* @return never
*/
public function setHasStaticVariable(bool $has_static_variable): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
public function hasStaticVariable(): bool
{
return false;
}
/**
* @return never
*/
public function setInternalScope(ClosedScope $scope): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @unused-param $is_return_type_undefined
* @override
* @return never
*/
public function setIsReturnTypeUndefined(bool $is_return_type_undefined): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @unused-param $number
* @override
* @return never
*/
public function setNumberOfOptionalParameters(int $number): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @unused-param $number
* @override
* @return never
*/
public function setNumberOfRequiredParameters(int $number): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @return never
*/
public function setPHPDocParameterTypeMap(array $parameter_map): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
/**
* @param ?UnionType $union_type the raw phpdoc union type
* @return never
*/
public function setPHPDocReturnType(?UnionType $union_type): void
{
throw new \AssertionError('unexpected call to ' . __METHOD__);
}
public function getContext(): Context
{
return (new Context())
->withFile($this->file_ref->getFile())
->withLineNumberStart($this->file_ref->getLineNumberStart());
}
public function getUnionType(): UnionType
{
return $this->return_type;
}
public function getUnionTypeWithUnmodifiedStatic(): UnionType
{
return $this->return_type;
}
public function getOriginalReturnType(): UnionType
{
return $this->return_type;
}
public function getSuppressIssueList(): array
{
// TODO: Inherit suppress issue list from phpdoc declaring this?
return [];
}
public function hasSuppressIssue(string $issue_type): bool
{
return \in_array($issue_type, $this->getSuppressIssueList(), true);
}
public function checkHasSuppressIssueAndIncrementCount(string $issue_type): bool
{
// helpers are no-ops right now
return false;
}
/**
* @unused-param $code_base
* @override
*/
public function hydrate(CodeBase $code_base): void
{
}
public function incrementSuppressIssueCount(string $issue_name): void
{
}
public function isDeprecated(): bool
{
return false;
}
public function getFileRef(): FileRef
{
return $this->file_ref;
}
public function isPHPInternal(): bool
{
return false;
}
/**
* @unused-param $is_deprecated
* @override
*/
public function setIsDeprecated(bool $is_deprecated): void
{
}
/**
* @param list<string> $suppress_issue_list
* @return never
*/
public function setSuppressIssueSet(array $suppress_issue_list): void
{
throw new \AssertionError('should not call ' . __METHOD__);
}
/**
* @return never
*/
public function setUnionType(UnionType $type): void
{
throw new \AssertionError('should not call ' . __METHOD__);
}
/**
* @return array<mixed,string> in the same format as FunctionSignatureMap.php
* @override (Unused, but part of the interface)
*/
public function toFunctionSignatureArray(): array
{
// no need for returns ref yet
$return_type = $this->return_type;
$stub = [$return_type->__toString()];
foreach ($this->params as $i => $parameter) {
$name = "p$i";
if ($parameter->isOptional()) {
$name .= '=';
}
$type_string = $parameter->getNonVariadicUnionType()->__toString();
if ($parameter->isPassByReference()) {
$type_string .= '&';
}
if ($parameter->isVariadic()) {
$type_string .= '...';
}
$stub[$name] = $type_string;
}
return $stub;
}
public function getReturnTypeAsGeneratorTemplateType(): Type
{
// Probably unused
// @phan-suppress-next-line PhanThrowTypeAbsentForCall
return Type::fromFullyQualifiedString('\Generator');
}
public function getDocComment(): ?string
{
return null;
}
public function getMarkupDescription(): string
{
$parts = $this->toFunctionSignatureArray();
$return_type = $parts[0];
unset($parts[0]);
$fragments = [];
foreach ($parts as $name => $signature) {
$fragment = '\$' . $name;
if (StringUtil::isNonZeroLengthString($signature)) {
$fragment = "$signature $fragment";
}
$fragments[] = $fragment;
}
$signature = static::NAME . '(' . \implode(',', $fragments) . ')';
if (StringUtil::isNonZeroLengthString($return_type)) {
// TODO: Make this unambiguous
$signature .= ':' . $return_type;
}
return $signature;
}
/**
* @unused-param $code_base
* @override
*/
public function analyzeReturnTypes(CodeBase $code_base): void
{
// do nothing
}
public function declaresTemplateTypeInComment(TemplateType $template_type): bool
{
// not supported yet
return false;
}
/**
* Returns true for `T` and `T[]` and `\MyClass<T>`, but not `\MyClass<\OtherClass>` or `false`
*/
public function hasTemplateTypeRecursive(): bool
{
if ($this->return_type->hasTemplateTypeRecursive()) {
return true;
}
foreach ($this->params as $param) {
if ($param->getNonVariadicUnionType()->hasTemplateTypeRecursive()) {
return true;
}
}
return false;
}
public function getTemplateTypeExtractorClosure(CodeBase $code_base, TemplateType $template_type): ?Closure
{
// Create a closure to extract types for the template type from the return type and param types.
$closure = $this->getReturnTemplateTypeExtractorClosure($code_base, $template_type);
foreach ($this->params as $i => $param) {
$param_closure = $param->getNonVariadicUnionType()->getTemplateTypeExtractorClosure($code_base, $template_type);
if (!$param_closure) {
continue;
}
$closure = TemplateType::combineParameterClosures(
$closure,
static function (UnionType $union_type, Context $context) use ($code_base, $i, $param_closure): UnionType {
$result = UnionType::empty();
foreach ($union_type->getTypeSet() as $type) {
$func = $type->asFunctionInterfaceOrNull($code_base, $context);
if (!$func) {
continue;
}
$param = $func->getParameterForCaller($i);
if ($param) {
$result = $result->withUnionType($param_closure(
$param->getNonVariadicUnionType(),
$context
));
}
}
return $result;
}
);
}
return $closure;
}
/**
* Extracts a closure to extract the template type from the return type, or returns null
* @return ?Closure(UnionType,Context):UnionType
*/
private function getReturnTemplateTypeExtractorClosure(CodeBase $code_base, TemplateType $template_type): ?Closure
{
$return_closure = $this->return_type->getTemplateTypeExtractorClosure($code_base, $template_type);
if (!$return_closure) {
return null;
}
return static function (UnionType $union_type, Context $context) use ($code_base, $return_closure): UnionType {
$result = UnionType::empty();
foreach ($union_type->getTypeSet() as $type) {
$func = $type->asFunctionInterfaceOrNull($code_base, $context);
if ($func) {
$result = $result->withUnionType($return_closure($func->getUnionType(), $context));
}
}
return $result;
};
}
/**
* @param array<string,UnionType> $template_parameter_type_map
*/
public function withTemplateParameterTypeMap(
array $template_parameter_type_map
): UnionType {
$new_params = \array_map(static function (ClosureDeclarationParameter $param) use ($template_parameter_type_map): ClosureDeclarationParameter {
return $param->withTemplateParameterTypeMap($template_parameter_type_map);
}, $this->params);
$new_return_type = $this->return_type->withTemplateParameterTypeMap($template_parameter_type_map);
if ($new_params === $this->params && $new_return_type === $this->return_type) {
// no change
return $this->asPHPDocUnionType();
}
// Create ClosureDeclarationType or CallableDeclarationType
return (new static($this->file_ref, $new_params, $new_return_type, $this->returns_reference, $this->is_nullable))->asPHPDocUnionType();
}
public function getCommentParamAssertionClosure(CodeBase $code_base): ?Closure
{
return null;
}
public function setIsPure(): void
{
// no-op
}
public function isPure(): bool
{
return false;
}
public function setHasTentativeReturnType(): void
{
// no-op
}
public function hasTentativeReturnType(): bool
{
return false;
}
public function getVariableTypeFallbackMap(CodeBase $code_base): array
{
return [];
}
public function recordHasMandatoryPHPDocParamAtOffset(int $parameter_offset): void
{
}
public function canCastToDeclaredType(CodeBase $code_base, Context $context, Type $other): bool
{
return !$other->isDefiniteNonCallableType($code_base);
}
/**
* @return never
*/
public function setAttributeList(array $attribute_list): void
{
throw new \AssertionError('should not call ' . __METHOD__);
}
public function getAttributeList(): array
{
return [];
}
public function isSubtypeOfNonNullableType(Type $type, CodeBase $code_base): bool
{
if ($type->isDefiniteNonCallableType($code_base)) {
return false;
}
return parent::isSubtypeOfNonNullableType($type, $code_base);
}
public function getPhanFlags(): int
{
return 0;
}
public function hasNoNamedArguments(): bool
{
return false;
}
////////////////////////////////////////////////////////////////////////////////
// End FunctionInterface overrides
////////////////////////////////////////////////////////////////////////////////
}

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