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TypeUtils.php
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TypeUtils.php
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<?php declare(strict_types = 1);
namespace PHPStan\Type;
use PHPStan\Type\Accessory\AccessoryType;
use PHPStan\Type\Accessory\HasPropertyType;
use PHPStan\Type\Constant\ConstantArrayType;
use PHPStan\Type\Constant\ConstantStringType;
class TypeUtils
{
/**
* @param \PHPStan\Type\Type $type
* @return \PHPStan\Type\ArrayType[]
*/
public static function getArrays(Type $type): array
{
return self::map(ArrayType::class, $type, true);
}
/**
* @param \PHPStan\Type\Type $type
* @return \PHPStan\Type\Constant\ConstantArrayType[]
*/
public static function getConstantArrays(Type $type): array
{
return self::map(ConstantArrayType::class, $type, false);
}
/**
* @param \PHPStan\Type\Type $type
* @return \PHPStan\Type\Constant\ConstantStringType[]
*/
public static function getConstantStrings(Type $type): array
{
return self::map(ConstantStringType::class, $type, false);
}
/**
* @param \PHPStan\Type\Type $type
* @return \PHPStan\Type\ConstantType[]
*/
public static function getConstantTypes(Type $type): array
{
return self::map(ConstantType::class, $type, false);
}
/**
* @param \PHPStan\Type\Type $type
* @return \PHPStan\Type\ConstantType[]
*/
public static function getAnyConstantTypes(Type $type): array
{
return self::map(ConstantType::class, $type, false, false);
}
/**
* @param \PHPStan\Type\Type $type
* @return \PHPStan\Type\ArrayType[]
*/
public static function getAnyArrays(Type $type): array
{
return self::map(ArrayType::class, $type, true, false);
}
public static function generalizeType(Type $type): Type
{
if ($type instanceof ConstantType) {
return $type->generalize();
} elseif ($type instanceof UnionType) {
return TypeCombinator::union(...array_map(static function (Type $innerType): Type {
return self::generalizeType($innerType);
}, $type->getTypes()));
}
return $type;
}
/**
* @param Type $type
* @return string[]
*/
public static function getDirectClassNames(Type $type): array
{
if ($type instanceof TypeWithClassName) {
return [$type->getClassName()];
}
if ($type instanceof UnionType || $type instanceof IntersectionType) {
$classNames = [];
foreach ($type->getTypes() as $innerType) {
if (!$innerType instanceof TypeWithClassName) {
continue;
}
$classNames[] = $innerType->getClassName();
}
return $classNames;
}
return [];
}
/**
* @param Type $type
* @return \PHPStan\Type\ConstantScalarType[]
*/
public static function getConstantScalars(Type $type): array
{
return self::map(ConstantScalarType::class, $type, false);
}
/**
* @param string $typeClass
* @param Type $type
* @param bool $inspectIntersections
* @param bool $stopOnUnmatched
* @return mixed[]
*/
private static function map(
string $typeClass,
Type $type,
bool $inspectIntersections,
bool $stopOnUnmatched = true
): array
{
if ($type instanceof $typeClass) {
return [$type];
}
if ($type instanceof UnionType) {
$matchingTypes = [];
foreach ($type->getTypes() as $innerType) {
if (!$innerType instanceof $typeClass) {
if ($stopOnUnmatched) {
return [];
}
continue;
}
$matchingTypes[] = $innerType;
}
return $matchingTypes;
}
if ($inspectIntersections && $type instanceof IntersectionType) {
$matchingTypes = [];
foreach ($type->getTypes() as $innerType) {
if (!$innerType instanceof $typeClass) {
if ($stopOnUnmatched) {
return [];
}
continue;
}
$matchingTypes[] = $innerType;
}
return $matchingTypes;
}
return [];
}
public static function toBenevolentUnion(Type $type): Type
{
if ($type instanceof BenevolentUnionType) {
return $type;
}
if ($type instanceof UnionType) {
return new BenevolentUnionType($type->getTypes());
}
return $type;
}
/**
* @param Type $type
* @return Type[]
*/
public static function flattenTypes(Type $type): array
{
if ($type instanceof UnionType) {
return $type->getTypes();
}
return [$type];
}
public static function findThisType(Type $type): ?ThisType
{
if ($type instanceof ThisType) {
return $type;
}
if ($type instanceof UnionType || $type instanceof IntersectionType) {
foreach ($type->getTypes() as $innerType) {
$thisType = self::findThisType($innerType);
if ($thisType !== null) {
return $thisType;
}
}
}
return null;
}
/**
* @param Type $type
* @return HasPropertyType[]
*/
public static function getHasPropertyTypes(Type $type): array
{
if ($type instanceof HasPropertyType) {
return [$type];
}
if ($type instanceof UnionType || $type instanceof IntersectionType) {
$hasPropertyTypes = [[]];
foreach ($type->getTypes() as $innerType) {
$hasPropertyTypes[] = self::getHasPropertyTypes($innerType);
}
return array_merge(...$hasPropertyTypes);
}
return [];
}
/**
* @param \PHPStan\Type\Type $type
* @return \PHPStan\Type\Accessory\AccessoryType[]
*/
public static function getAccessoryTypes(Type $type): array
{
return self::map(AccessoryType::class, $type, true, false);
}
public static function containsCallable(Type $type): bool
{
if ($type->isCallable()->yes()) {
return true;
}
if ($type instanceof UnionType) {
foreach ($type->getTypes() as $innerType) {
if ($innerType->isCallable()->yes()) {
return true;
}
}
}
return false;
}
}