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ConstantArrayType.php
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<?php declare(strict_types = 1);
namespace PHPStan\Type\Constant;
use Nette\Utils\Strings;
use PHPStan\Analyser\OutOfClassScope;
use PHPStan\DependencyInjection\BleedingEdgeToggle;
use PHPStan\Internal\CombinationsHelper;
use PHPStan\Php\PhpVersion;
use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprIntegerNode;
use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
use PHPStan\PhpDocParser\Ast\Type\ArrayShapeItemNode;
use PHPStan\PhpDocParser\Ast\Type\ArrayShapeNode;
use PHPStan\PhpDocParser\Ast\Type\ConstTypeNode;
use PHPStan\PhpDocParser\Ast\Type\IdentifierTypeNode;
use PHPStan\PhpDocParser\Ast\Type\TypeNode;
use PHPStan\Reflection\Callables\FunctionCallableVariant;
use PHPStan\Reflection\ClassMemberAccessAnswerer;
use PHPStan\Reflection\InaccessibleMethod;
use PHPStan\Reflection\InitializerExprTypeResolver;
use PHPStan\Reflection\PhpVersionStaticAccessor;
use PHPStan\Reflection\TrivialParametersAcceptor;
use PHPStan\ShouldNotHappenException;
use PHPStan\TrinaryLogic;
use PHPStan\Type\AcceptsResult;
use PHPStan\Type\Accessory\AccessoryArrayListType;
use PHPStan\Type\Accessory\HasOffsetValueType;
use PHPStan\Type\Accessory\NonEmptyArrayType;
use PHPStan\Type\ArrayType;
use PHPStan\Type\BooleanType;
use PHPStan\Type\CompoundType;
use PHPStan\Type\ConstantScalarType;
use PHPStan\Type\ConstantType;
use PHPStan\Type\ErrorType;
use PHPStan\Type\GeneralizePrecision;
use PHPStan\Type\Generic\TemplateTypeMap;
use PHPStan\Type\Generic\TemplateTypeVariance;
use PHPStan\Type\IntegerRangeType;
use PHPStan\Type\IntersectionType;
use PHPStan\Type\MixedType;
use PHPStan\Type\NeverType;
use PHPStan\Type\Type;
use PHPStan\Type\TypeCombinator;
use PHPStan\Type\UnionType;
use PHPStan\Type\VerbosityLevel;
use function array_keys;
use function array_map;
use function array_merge;
use function array_pop;
use function array_push;
use function array_reverse;
use function array_slice;
use function array_unique;
use function array_values;
use function assert;
use function count;
use function implode;
use function in_array;
use function is_bool;
use function is_int;
use function is_string;
use function min;
use function pow;
use function range;
use function sort;
use function sprintf;
use function str_contains;
/**
* @api
*/
class ConstantArrayType extends ArrayType implements ConstantType
{
private const DESCRIBE_LIMIT = 8;
private TrinaryLogic $isList;
/** @var self[]|null */
private ?array $allArrays = null;
/** @var non-empty-list<int> */
private array $nextAutoIndexes;
/**
* @api
* @param array<int, ConstantIntegerType|ConstantStringType> $keyTypes
* @param array<int, Type> $valueTypes
* @param non-empty-list<int>|int $nextAutoIndexes
* @param int[] $optionalKeys
*/
public function __construct(
private array $keyTypes,
private array $valueTypes,
int|array $nextAutoIndexes = [0],
private array $optionalKeys = [],
bool|TrinaryLogic $isList = false,
)
{
assert(count($keyTypes) === count($valueTypes));
if (is_int($nextAutoIndexes)) {
$nextAutoIndexes = [$nextAutoIndexes];
}
$this->nextAutoIndexes = $nextAutoIndexes;
$keyTypesCount = count($this->keyTypes);
if ($keyTypesCount === 0) {
$keyType = new NeverType(true);
$isList = TrinaryLogic::createYes();
} elseif ($keyTypesCount === 1) {
$keyType = $this->keyTypes[0];
} else {
$keyType = new UnionType($this->keyTypes);
}
if (is_bool($isList)) {
$isList = TrinaryLogic::createFromBoolean($isList);
}
$this->isList = $isList;
parent::__construct(
$keyType,
count($valueTypes) > 0 ? TypeCombinator::union(...$valueTypes) : new NeverType(true),
);
}
public function getConstantArrays(): array
{
return [$this];
}
public function isConstantValue(): TrinaryLogic
{
return TrinaryLogic::createYes();
}
/** @deprecated Use isIterableAtLeastOnce()->no() instead */
public function isEmpty(): bool
{
return count($this->keyTypes) === 0;
}
/**
* @return non-empty-list<int>
*/
public function getNextAutoIndexes(): array
{
return $this->nextAutoIndexes;
}
/**
* @deprecated
*/
public function getNextAutoIndex(): int
{
return $this->nextAutoIndexes[count($this->nextAutoIndexes) - 1];
}
/**
* @return int[]
*/
public function getOptionalKeys(): array
{
return $this->optionalKeys;
}
/**
* @return self[]
*/
public function getAllArrays(): array
{
if ($this->allArrays !== null) {
return $this->allArrays;
}
if (count($this->optionalKeys) <= 10) {
$optionalKeysCombinations = $this->powerSet($this->optionalKeys);
} else {
$optionalKeysCombinations = [
[],
$this->optionalKeys,
];
}
$requiredKeys = [];
foreach (array_keys($this->keyTypes) as $i) {
if (in_array($i, $this->optionalKeys, true)) {
continue;
}
$requiredKeys[] = $i;
}
$arrays = [];
foreach ($optionalKeysCombinations as $combination) {
$keys = array_merge($requiredKeys, $combination);
sort($keys);
if ($this->isList->yes() && array_keys($keys) !== $keys) {
continue;
}
$builder = ConstantArrayTypeBuilder::createEmpty();
foreach ($keys as $i) {
$builder->setOffsetValueType($this->keyTypes[$i], $this->valueTypes[$i]);
}
$array = $builder->getArray();
if (!$array instanceof ConstantArrayType) {
throw new ShouldNotHappenException();
}
$arrays[] = $array;
}
return $this->allArrays = $arrays;
}
/**
* @template T
* @param T[] $in
* @return T[][]
*/
private function powerSet(array $in): array
{
$count = count($in);
$members = pow(2, $count);
$return = [];
for ($i = 0; $i < $members; $i++) {
$b = sprintf('%0' . $count . 'b', $i);
$out = [];
for ($j = 0; $j < $count; $j++) {
if ($b[$j] !== '1') {
continue;
}
$out[] = $in[$j];
}
$return[] = $out;
}
return $return;
}
/**
* @return array<int, ConstantIntegerType|ConstantStringType>
*/
public function getKeyTypes(): array
{
return $this->keyTypes;
}
/** @deprecated Use getFirstIterableKeyType() instead */
public function getFirstKeyType(): Type
{
return $this->getFirstIterableKeyType();
}
/** @deprecated Use getLastIterableKeyType() instead */
public function getLastKeyType(): Type
{
return $this->getLastIterableKeyType();
}
/**
* @return array<int, Type>
*/
public function getValueTypes(): array
{
return $this->valueTypes;
}
/** @deprecated Use getFirstIterableValueType() instead */
public function getFirstValueType(): Type
{
return $this->getFirstIterableValueType();
}
/** @deprecated Use getLastIterableValueType() instead */
public function getLastValueType(): Type
{
return $this->getLastIterableValueType();
}
public function isOptionalKey(int $i): bool
{
return in_array($i, $this->optionalKeys, true);
}
public function accepts(Type $type, bool $strictTypes): TrinaryLogic
{
return $this->acceptsWithReason($type, $strictTypes)->result;
}
public function acceptsWithReason(Type $type, bool $strictTypes): AcceptsResult
{
if ($type instanceof CompoundType && !$type instanceof IntersectionType) {
return $type->isAcceptedWithReasonBy($this, $strictTypes);
}
if ($type instanceof self && count($this->keyTypes) === 0) {
return AcceptsResult::createFromBoolean(count($type->keyTypes) === 0);
}
if ($this->isList()->yes() && $type->isList()->no()) {
return AcceptsResult::createNo();
}
$result = AcceptsResult::createYes();
foreach ($this->keyTypes as $i => $keyType) {
$valueType = $this->valueTypes[$i];
$hasOffsetValueType = $type->hasOffsetValueType($keyType);
$hasOffset = new AcceptsResult(
$hasOffsetValueType,
$hasOffsetValueType->yes() || !$type->isConstantArray()->yes() ? [] : [sprintf('Array %s have offset %s.', $hasOffsetValueType->no() ? 'does not' : 'might not', $keyType->describe(VerbosityLevel::value()))],
);
if ($hasOffset->no()) {
if ($this->isOptionalKey($i)) {
continue;
}
return $hasOffset;
}
if ($hasOffset->maybe() && $this->isOptionalKey($i)) {
$hasOffset = AcceptsResult::createYes();
}
$result = $result->and($hasOffset);
$otherValueType = $type->getOffsetValueType($keyType);
$verbosity = VerbosityLevel::getRecommendedLevelByType($valueType, $otherValueType);
$acceptsValue = $valueType->acceptsWithReason($otherValueType, $strictTypes)->decorateReasons(
static fn (string $reason) => sprintf(
'Offset %s (%s) does not accept type %s: %s',
$keyType->describe(VerbosityLevel::precise()),
$valueType->describe($verbosity),
$otherValueType->describe($verbosity),
$reason,
),
);
if (!$acceptsValue->yes() && count($acceptsValue->reasons) === 0 && $type->isConstantArray()->yes()) {
$acceptsValue = new AcceptsResult($acceptsValue->result, [
sprintf(
'Offset %s (%s) does not accept type %s.',
$keyType->describe(VerbosityLevel::precise()),
$valueType->describe($verbosity),
$otherValueType->describe($verbosity),
),
]);
}
if ($acceptsValue->no()) {
return $acceptsValue;
}
$result = $result->and($acceptsValue);
}
$result = $result->and(new AcceptsResult($type->isArray(), []));
if ($type->isOversizedArray()->yes()) {
if (!$result->no()) {
return AcceptsResult::createYes();
}
}
return $result;
}
public function isSuperTypeOf(Type $type): TrinaryLogic
{
if ($type instanceof self) {
if (count($this->keyTypes) === 0) {
return $type->isIterableAtLeastOnce()->negate();
}
$results = [];
foreach ($this->keyTypes as $i => $keyType) {
$hasOffset = $type->hasOffsetValueType($keyType);
if ($hasOffset->no()) {
if (!$this->isOptionalKey($i)) {
return TrinaryLogic::createNo();
}
$results[] = TrinaryLogic::createYes();
continue;
} elseif ($hasOffset->maybe() && !$this->isOptionalKey($i)) {
$results[] = TrinaryLogic::createMaybe();
}
$isValueSuperType = $this->valueTypes[$i]->isSuperTypeOf($type->getOffsetValueType($keyType));
if ($isValueSuperType->no()) {
return TrinaryLogic::createNo();
}
$results[] = $isValueSuperType;
}
return TrinaryLogic::createYes()->and(...$results);
}
if ($type instanceof ArrayType) {
$result = TrinaryLogic::createMaybe();
if (count($this->keyTypes) === 0) {
return $result;
}
$isKeySuperType = $this->getKeyType()->isSuperTypeOf($type->getKeyType());
if ($isKeySuperType->no()) {
return TrinaryLogic::createNo();
}
return $result->and($isKeySuperType, $this->getItemType()->isSuperTypeOf($type->getItemType()));
}
if ($type instanceof CompoundType) {
return $type->isSubTypeOf($this);
}
return TrinaryLogic::createNo();
}
public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType
{
if ($this->isIterableAtLeastOnce()->no() && count($type->getConstantScalarValues()) === 1) {
// @phpstan-ignore equal.invalid, equal.notAllowed
return new ConstantBooleanType($type->getConstantScalarValues()[0] == []); // phpcs:ignore
}
return new BooleanType();
}
public function equals(Type $type): bool
{
if (!$type instanceof self) {
return false;
}
if (count($this->keyTypes) !== count($type->keyTypes)) {
return false;
}
foreach ($this->keyTypes as $i => $keyType) {
$valueType = $this->valueTypes[$i];
if (!$valueType->equals($type->valueTypes[$i])) {
return false;
}
if (!$keyType->equals($type->keyTypes[$i])) {
return false;
}
}
if ($this->optionalKeys !== $type->optionalKeys) {
return false;
}
return true;
}
public function isCallable(): TrinaryLogic
{
$typeAndMethods = $this->findTypeAndMethodNames();
if ($typeAndMethods === []) {
return TrinaryLogic::createNo();
}
$results = array_map(
static fn (ConstantArrayTypeAndMethod $typeAndMethod): TrinaryLogic => $typeAndMethod->getCertainty(),
$typeAndMethods,
);
return TrinaryLogic::createYes()->and(...$results);
}
public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array
{
$typeAndMethodNames = $this->findTypeAndMethodNames();
if ($typeAndMethodNames === []) {
throw new ShouldNotHappenException();
}
$acceptors = [];
foreach ($typeAndMethodNames as $typeAndMethodName) {
if ($typeAndMethodName->isUnknown() || !$typeAndMethodName->getCertainty()->yes()) {
$acceptors[] = new TrivialParametersAcceptor();
continue;
}
$method = $typeAndMethodName->getType()
->getMethod($typeAndMethodName->getMethod(), $scope);
if (!$scope->canCallMethod($method)) {
$acceptors[] = new InaccessibleMethod($method);
continue;
}
array_push($acceptors, ...FunctionCallableVariant::createFromVariants($method, $method->getVariants()));
}
return $acceptors;
}
/**
* @return array{Type, Type}|array{}
*/
private function getClassOrObjectAndMethods(): array
{
if (count($this->keyTypes) !== 2) {
return [];
}
$classOrObject = null;
$method = null;
foreach ($this->keyTypes as $i => $keyType) {
if ($keyType->isSuperTypeOf(new ConstantIntegerType(0))->yes()) {
$classOrObject = $this->valueTypes[$i];
continue;
}
if (!$keyType->isSuperTypeOf(new ConstantIntegerType(1))->yes()) {
continue;
}
$method = $this->valueTypes[$i];
}
if ($classOrObject === null || $method === null) {
return [];
}
return [$classOrObject, $method];
}
/** @deprecated Use findTypeAndMethodNames() instead */
public function findTypeAndMethodName(): ?ConstantArrayTypeAndMethod
{
$callableArray = $this->getClassOrObjectAndMethods();
if ($callableArray === []) {
return null;
}
[$classOrObject, $method] = $callableArray;
if (!$method instanceof ConstantStringType) {
return ConstantArrayTypeAndMethod::createUnknown();
}
$type = $classOrObject->getObjectTypeOrClassStringObjectType();
if (!$type->isObject()->yes()) {
return ConstantArrayTypeAndMethod::createUnknown();
}
$has = $type->hasMethod($method->getValue());
if (!$has->no()) {
if ($this->isOptionalKey(0) || $this->isOptionalKey(1)) {
$has = $has->and(TrinaryLogic::createMaybe());
}
return ConstantArrayTypeAndMethod::createConcrete($type, $method->getValue(), $has);
}
return null;
}
/** @return ConstantArrayTypeAndMethod[] */
public function findTypeAndMethodNames(): array
{
$callableArray = $this->getClassOrObjectAndMethods();
if ($callableArray === []) {
return [];
}
[$classOrObject, $methods] = $callableArray;
if (count($methods->getConstantStrings()) === 0) {
return [ConstantArrayTypeAndMethod::createUnknown()];
}
$type = $classOrObject->getObjectTypeOrClassStringObjectType();
if (!$type->isObject()->yes()) {
return [ConstantArrayTypeAndMethod::createUnknown()];
}
$typeAndMethods = [];
$phpVersion = PhpVersionStaticAccessor::getInstance();
foreach ($methods->getConstantStrings() as $method) {
$has = $type->hasMethod($method->getValue());
if ($has->no()) {
continue;
}
if (
BleedingEdgeToggle::isBleedingEdge()
&& $has->yes()
&& !$phpVersion->supportsCallableInstanceMethods()
) {
$methodReflection = $type->getMethod($method->getValue(), new OutOfClassScope());
if ($classOrObject->isString()->yes() && !$methodReflection->isStatic()) {
continue;
}
}
if ($this->isOptionalKey(0) || $this->isOptionalKey(1)) {
$has = $has->and(TrinaryLogic::createMaybe());
}
$typeAndMethods[] = ConstantArrayTypeAndMethod::createConcrete($type, $method->getValue(), $has);
}
return $typeAndMethods;
}
public function hasOffsetValueType(Type $offsetType): TrinaryLogic
{
$offsetType = $offsetType->toArrayKey();
if ($offsetType instanceof UnionType) {
$results = [];
foreach ($offsetType->getTypes() as $innerType) {
$results[] = $this->hasOffsetValueType($innerType);
}
return TrinaryLogic::extremeIdentity(...$results);
}
if ($offsetType instanceof IntegerRangeType) {
$finiteTypes = $offsetType->getFiniteTypes();
if ($finiteTypes !== []) {
$results = [];
foreach ($finiteTypes as $innerType) {
$results[] = $this->hasOffsetValueType($innerType);
}
return TrinaryLogic::extremeIdentity(...$results);
}
}
$result = TrinaryLogic::createNo();
foreach ($this->keyTypes as $i => $keyType) {
if (
$keyType instanceof ConstantIntegerType
&& !$offsetType->isString()->no()
&& $offsetType->isConstantScalarValue()->no()
) {
return TrinaryLogic::createMaybe();
}
$has = $keyType->isSuperTypeOf($offsetType);
if ($has->yes()) {
if ($this->isOptionalKey($i)) {
return TrinaryLogic::createMaybe();
}
return TrinaryLogic::createYes();
}
if (!$has->maybe()) {
continue;
}
$result = TrinaryLogic::createMaybe();
}
return $result;
}
public function getOffsetValueType(Type $offsetType): Type
{
$offsetType = $offsetType->toArrayKey();
$matchingValueTypes = [];
$all = true;
foreach ($this->keyTypes as $i => $keyType) {
if ($keyType->isSuperTypeOf($offsetType)->no()) {
$all = false;
continue;
}
$matchingValueTypes[] = $this->valueTypes[$i];
}
if ($all) {
if (count($this->keyTypes) === 0) {
return new ErrorType();
}
return $this->getIterableValueType();
}
if (count($matchingValueTypes) > 0) {
$type = TypeCombinator::union(...$matchingValueTypes);
if ($type instanceof ErrorType) {
return new MixedType();
}
return $type;
}
return new ErrorType(); // undefined offset
}
public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type
{
$builder = ConstantArrayTypeBuilder::createFromConstantArray($this);
$builder->setOffsetValueType($offsetType, $valueType);
return $builder->getArray();
}
public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type
{
$offsetType = $offsetType->toArrayKey();
$builder = ConstantArrayTypeBuilder::createFromConstantArray($this);
foreach ($this->keyTypes as $keyType) {
if ($offsetType->isSuperTypeOf($keyType)->no()) {
continue;
}
$builder->setOffsetValueType($keyType, $valueType);
}
return $builder->getArray();
}
public function unsetOffset(Type $offsetType): Type
{
$offsetType = $offsetType->toArrayKey();
if ($offsetType instanceof ConstantIntegerType || $offsetType instanceof ConstantStringType) {
foreach ($this->keyTypes as $i => $keyType) {
if ($keyType->getValue() !== $offsetType->getValue()) {
continue;
}
$keyTypes = $this->keyTypes;
unset($keyTypes[$i]);
$valueTypes = $this->valueTypes;
unset($valueTypes[$i]);
$newKeyTypes = [];
$newValueTypes = [];
$newOptionalKeys = [];
$k = 0;
foreach ($keyTypes as $j => $newKeyType) {
$newKeyTypes[] = $newKeyType;
$newValueTypes[] = $valueTypes[$j];
if (in_array($j, $this->optionalKeys, true)) {
$newOptionalKeys[] = $k;
}
$k++;
}
return new self($newKeyTypes, $newValueTypes, $this->nextAutoIndexes, $newOptionalKeys, TrinaryLogic::createNo());
}
return $this;
}
$constantScalars = $offsetType->getConstantScalarTypes();
if (count($constantScalars) > 0) {
$optionalKeys = $this->optionalKeys;
foreach ($constantScalars as $constantScalar) {
$constantScalar = $constantScalar->toArrayKey();
if (!$constantScalar instanceof ConstantIntegerType && !$constantScalar instanceof ConstantStringType) {
continue;
}
foreach ($this->keyTypes as $i => $keyType) {
if ($keyType->getValue() !== $constantScalar->getValue()) {
continue;
}
if (in_array($i, $optionalKeys, true)) {
continue 2;
}
$optionalKeys[] = $i;
}
}
return new self($this->keyTypes, $this->valueTypes, $this->nextAutoIndexes, $optionalKeys, TrinaryLogic::createNo());
}
$optionalKeys = $this->optionalKeys;
$isList = $this->isList;
foreach ($this->keyTypes as $i => $keyType) {
if (!$offsetType->isSuperTypeOf($keyType)->yes()) {
continue;
}
$optionalKeys[] = $i;
$isList = TrinaryLogic::createNo();
}
$optionalKeys = array_values(array_unique($optionalKeys));
return new self($this->keyTypes, $this->valueTypes, $this->nextAutoIndexes, $optionalKeys, $isList);
}
public function fillKeysArray(Type $valueType): Type
{
$builder = ConstantArrayTypeBuilder::createEmpty();
foreach ($this->valueTypes as $i => $keyType) {
if ($keyType->isInteger()->no()) {
$stringKeyType = $keyType->toString();
if ($stringKeyType instanceof ErrorType) {
return $stringKeyType;
}
$builder->setOffsetValueType($stringKeyType, $valueType, $this->isOptionalKey($i));
} else {
$builder->setOffsetValueType($keyType, $valueType, $this->isOptionalKey($i));
}
}
return $builder->getArray();
}
public function flipArray(): Type
{
$builder = ConstantArrayTypeBuilder::createEmpty();
foreach ($this->keyTypes as $i => $keyType) {
$valueType = $this->valueTypes[$i];
$builder->setOffsetValueType(
$valueType->toArrayKey(),
$keyType,
$this->isOptionalKey($i),
);
}
return $builder->getArray();
}
public function intersectKeyArray(Type $otherArraysType): Type
{
$builder = ConstantArrayTypeBuilder::createEmpty();
foreach ($this->keyTypes as $i => $keyType) {
$valueType = $this->valueTypes[$i];
$has = $otherArraysType->hasOffsetValueType($keyType);
if ($has->no()) {
continue;
}
$builder->setOffsetValueType($keyType, $valueType, $this->isOptionalKey($i) || !$has->yes());
}
return $builder->getArray();
}
public function popArray(): Type
{
return $this->removeLastElements(1);
}
private function reverseConstantArray(TrinaryLogic $preserveKeys): self
{
$keyTypesReversed = array_reverse($this->keyTypes, true);
$keyTypes = array_values($keyTypesReversed);
$keyTypesReversedKeys = array_keys($keyTypesReversed);
$optionalKeys = array_map(static fn (int $optionalKey): int => $keyTypesReversedKeys[$optionalKey], $this->optionalKeys);
$reversed = new self($keyTypes, array_reverse($this->valueTypes), $this->nextAutoIndexes, $optionalKeys, TrinaryLogic::createNo());
return $preserveKeys->yes() ? $reversed : $reversed->reindex();
}
public function reverseArray(TrinaryLogic $preserveKeys): Type
{
return $this->reverseConstantArray($preserveKeys);
}
public function searchArray(Type $needleType): Type
{
$matches = [];
$hasIdenticalValue = false;
foreach ($this->valueTypes as $index => $valueType) {
$isNeedleSuperType = $valueType->isSuperTypeOf($needleType);
if ($isNeedleSuperType->no()) {
continue;
}
if ($needleType instanceof ConstantScalarType && $valueType instanceof ConstantScalarType
&& $needleType->getValue() === $valueType->getValue()
&& !$this->isOptionalKey($index)
) {
$hasIdenticalValue = true;
}
$matches[] = $this->keyTypes[$index];
}
if (count($matches) > 0) {
if ($hasIdenticalValue) {
return TypeCombinator::union(...$matches);
}
return TypeCombinator::union(new ConstantBooleanType(false), ...$matches);
}
return new ConstantBooleanType(false);
}
public function shiftArray(): Type
{
return $this->removeFirstElements(1);
}
public function shuffleArray(): Type
{
$valuesArray = $this->getValuesArray();
$isIterableAtLeastOnce = $valuesArray->isIterableAtLeastOnce();
if ($isIterableAtLeastOnce->no()) {
return $valuesArray;
}
$generalizedArray = new ArrayType($valuesArray->getIterableKeyType(), $valuesArray->getItemType());
if ($isIterableAtLeastOnce->yes()) {
$generalizedArray = TypeCombinator::intersect($generalizedArray, new NonEmptyArrayType());
}
if ($valuesArray->isList->yes()) {
$generalizedArray = AccessoryArrayListType::intersectWith($generalizedArray);
}
return $generalizedArray;
}
public function isIterableAtLeastOnce(): TrinaryLogic
{
$keysCount = count($this->keyTypes);
if ($keysCount === 0) {
return TrinaryLogic::createNo();
}
$optionalKeysCount = count($this->optionalKeys);
if ($optionalKeysCount < $keysCount) {
return TrinaryLogic::createYes();
}
return TrinaryLogic::createMaybe();
}
public function getArraySize(): Type
{
$optionalKeysCount = count($this->optionalKeys);
$totalKeysCount = count($this->getKeyTypes());
if ($optionalKeysCount === 0) {
return new ConstantIntegerType($totalKeysCount);
}
return IntegerRangeType::fromInterval($totalKeysCount - $optionalKeysCount, $totalKeysCount);
}
public function getFirstIterableKeyType(): Type
{
$keyTypes = [];
foreach ($this->keyTypes as $i => $keyType) {
$keyTypes[] = $keyType;
if (!$this->isOptionalKey($i)) {
break;
}
}
return TypeCombinator::union(...$keyTypes);
}
public function getLastIterableKeyType(): Type
{
$keyTypes = [];
for ($i = count($this->keyTypes) - 1; $i >= 0; $i--) {
$keyTypes[] = $this->keyTypes[$i];
if (!$this->isOptionalKey($i)) {
break;
}
}
return TypeCombinator::union(...$keyTypes);
}
public function getFirstIterableValueType(): Type
{
$valueTypes = [];
foreach ($this->valueTypes as $i => $valueType) {
$valueTypes[] = $valueType;
if (!$this->isOptionalKey($i)) {
break;
}
}
return TypeCombinator::union(...$valueTypes);
}
public function getLastIterableValueType(): Type
{
$valueTypes = [];
for ($i = count($this->keyTypes) - 1; $i >= 0; $i--) {
$valueTypes[] = $this->valueTypes[$i];
if (!$this->isOptionalKey($i)) {
break;
}
}
return TypeCombinator::union(...$valueTypes);
}
public function isConstantArray(): TrinaryLogic
{
return TrinaryLogic::createYes();
}