File src/Reflection/InitializerExprTypeResolver.php

1:	<?php declare(strict_types = 1);
2:
3:	namespace PHPStan\Reflection;
4:
5:	use Nette\Utils\Strings;
6:	use PhpParser\Node\Arg;
7:	use PhpParser\Node\Expr;
8:	use PhpParser\Node\Expr\BinaryOp;
9:	use PhpParser\Node\Expr\ClassConstFetch;
10:	use PhpParser\Node\Expr\ConstFetch;
11:	use PhpParser\Node\Expr\PropertyFetch;
12:	use PhpParser\Node\Identifier;
13:	use PhpParser\Node\Name;
14:	use PhpParser\Node\Scalar\Float_;
15:	use PhpParser\Node\Scalar\Int_;
16:	use PhpParser\Node\Scalar\MagicConst;
17:	use PhpParser\Node\Scalar\MagicConst\Dir;
18:	use PhpParser\Node\Scalar\MagicConst\File;
19:	use PhpParser\Node\Scalar\MagicConst\Line;
20:	use PhpParser\Node\Scalar\String_;
21:	use PHPStan\Analyser\ConstantResolver;
22:	use PHPStan\Analyser\OutOfClassScope;
23:	use PHPStan\DependencyInjection\Type\OperatorTypeSpecifyingExtensionRegistryProvider;
24:	use PHPStan\Node\Expr\TypeExpr;
25:	use PHPStan\Php\PhpVersion;
26:	use PHPStan\Reflection\ReflectionProvider\ReflectionProviderProvider;
27:	use PHPStan\ShouldNotHappenException;
28:	use PHPStan\Type\Accessory\AccessoryArrayListType;
29:	use PHPStan\Type\Accessory\AccessoryLiteralStringType;
30:	use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
31:	use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
32:	use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
33:	use PHPStan\Type\Accessory\AccessoryNumericStringType;
34:	use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
35:	use PHPStan\Type\Accessory\NonEmptyArrayType;
36:	use PHPStan\Type\ArrayType;
37:	use PHPStan\Type\BenevolentUnionType;
38:	use PHPStan\Type\BooleanType;
39:	use PHPStan\Type\ClassStringType;
40:	use PHPStan\Type\Constant\ConstantArrayType;
41:	use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
42:	use PHPStan\Type\Constant\ConstantBooleanType;
43:	use PHPStan\Type\Constant\ConstantFloatType;
44:	use PHPStan\Type\Constant\ConstantIntegerType;
45:	use PHPStan\Type\Constant\ConstantStringType;
46:	use PHPStan\Type\Constant\OversizedArrayBuilder;
47:	use PHPStan\Type\ConstantScalarType;
48:	use PHPStan\Type\ConstantTypeHelper;
49:	use PHPStan\Type\Enum\EnumCaseObjectType;
50:	use PHPStan\Type\ErrorType;
51:	use PHPStan\Type\FloatType;
52:	use PHPStan\Type\GeneralizePrecision;
53:	use PHPStan\Type\Generic\GenericClassStringType;
54:	use PHPStan\Type\Generic\TemplateType;
55:	use PHPStan\Type\IntegerRangeType;
56:	use PHPStan\Type\IntegerType;
57:	use PHPStan\Type\IntersectionType;
58:	use PHPStan\Type\MixedType;
59:	use PHPStan\Type\NeverType;
60:	use PHPStan\Type\NullType;
61:	use PHPStan\Type\ObjectType;
62:	use PHPStan\Type\ObjectWithoutClassType;
63:	use PHPStan\Type\StaticType;
64:	use PHPStan\Type\StringType;
65:	use PHPStan\Type\ThisType;
66:	use PHPStan\Type\Type;
67:	use PHPStan\Type\TypeCombinator;
68:	use PHPStan\Type\TypehintHelper;
69:	use PHPStan\Type\TypeResult;
70:	use PHPStan\Type\TypeTraverser;
71:	use PHPStan\Type\TypeUtils;
72:	use PHPStan\Type\TypeWithClassName;
73:	use PHPStan\Type\UnionType;
74:	use function array_key_exists;
75:	use function array_keys;
76:	use function array_merge;
77:	use function assert;
78:	use function ceil;
79:	use function count;
80:	use function dirname;
81:	use function floor;
82:	use function in_array;
83:	use function intval;
84:	use function is_finite;
85:	use function is_float;
86:	use function is_int;
87:	use function is_numeric;
88:	use function max;
89:	use function min;
90:	use function sprintf;
91:	use function strtolower;
92:	use const INF;
93:
94:	final class InitializerExprTypeResolver
95:	{
96:
97:	public const CALCULATE_SCALARS_LIMIT = 128;
98:
99:	/** @var array<string, true> */
100:	private array $currentlyResolvingClassConstant = [];
101:
102:	public function __construct(
103:	private ConstantResolver $constantResolver,
104:	private ReflectionProviderProvider $reflectionProviderProvider,
105:	private PhpVersion $phpVersion,
106:	private OperatorTypeSpecifyingExtensionRegistryProvider $operatorTypeSpecifyingExtensionRegistryProvider,
107:	private OversizedArrayBuilder $oversizedArrayBuilder,
108:	private bool $usePathConstantsAsConstantString,
109:	)
110:	{
111:	}
112:
113:	/** @api */
114:	public function getType(Expr $expr, InitializerExprContext $context): Type
115:	{
116:	if ($expr instanceof TypeExpr) {
117:	return $expr->getExprType();
118:	}
119:	if ($expr instanceof Int_) {
120:	return new ConstantIntegerType($expr->value);
121:	}
122:	if ($expr instanceof Float_) {
123:	return new ConstantFloatType($expr->value);
124:	}
125:	if ($expr instanceof String_) {
126:	return new ConstantStringType($expr->value);
127:	}
128:	if ($expr instanceof ConstFetch) {
129:	$constName = (string) $expr->name;
130:	$loweredConstName = strtolower($constName);
131:	if ($loweredConstName === 'true') {
132:	return new ConstantBooleanType(true);
133:	} elseif ($loweredConstName === 'false') {
134:	return new ConstantBooleanType(false);
135:	} elseif ($loweredConstName === 'null') {
136:	return new NullType();
137:	}
138:
139:	$constant = $this->constantResolver->resolveConstant($expr->name, $context);
140:	if ($constant !== null) {
141:	return $constant;
142:	}
143:
144:	return new ErrorType();
145:	}
146:	if ($expr instanceof File) {
147:	$file = $context->getFile();
148:	if ($file === null) {
149:	return new StringType();
150:	}
151:	$stringType = new ConstantStringType($file);
152:	return $this->usePathConstantsAsConstantString ? $stringType : $stringType->generalize(GeneralizePrecision::moreSpecific());
153:	}
154:	if ($expr instanceof Dir) {
155:	$file = $context->getFile();
156:	if ($file === null) {
157:	return new StringType();
158:	}
159:	$stringType = new ConstantStringType(dirname($file));
160:	return $this->usePathConstantsAsConstantString ? $stringType : $stringType->generalize(GeneralizePrecision::moreSpecific());
161:	}
162:	if ($expr instanceof Line) {
163:	return new ConstantIntegerType($expr->getStartLine());
164:	}
165:	if ($expr instanceof Expr\New_) {
166:	if ($expr->class instanceof Name) {
167:	return new ObjectType((string) $expr->class);
168:	}
169:
170:	return new ObjectWithoutClassType();
171:	}
172:	if ($expr instanceof Expr\Array_) {
173:	return $this->getArrayType($expr, fn (Expr $expr): Type => $this->getType($expr, $context));
174:	}
175:	if ($expr instanceof Expr\ArrayDimFetch && $expr->dim !== null) {
176:	$var = $this->getType($expr->var, $context);
177:	$dim = $this->getType($expr->dim, $context);
178:	return $var->getOffsetValueType($dim);
179:	}
180:	if ($expr instanceof ClassConstFetch && $expr->name instanceof Identifier) {
181:	return $this->getClassConstFetchType($expr->class, $expr->name->toString(), $context->getClassName(), fn (Expr $expr): Type => $this->getType($expr, $context));
182:	}
183:	if ($expr instanceof Expr\UnaryPlus) {
184:	return $this->getType($expr->expr, $context)->toNumber();
185:	}
186:	if ($expr instanceof Expr\UnaryMinus) {
187:	return $this->getUnaryMinusType($expr->expr, fn (Expr $expr): Type => $this->getType($expr, $context));
188:	}
189:	if ($expr instanceof Expr\BinaryOp\Coalesce) {
190:	$leftType = $this->getType($expr->left, $context);
191:	$rightType = $this->getType($expr->right, $context);
192:
193:	return TypeCombinator::union(TypeCombinator::removeNull($leftType), $rightType);
194:	}
195:
196:	if ($expr instanceof Expr\Ternary) {
197:	$condType = $this->getType($expr->cond, $context);
198:	$elseType = $this->getType($expr->else, $context);
199:	if ($expr->if === null) {
200:	return TypeCombinator::union(
201:	TypeCombinator::removeFalsey($condType),
202:	$elseType,
203:	);
204:	}
205:
206:	$ifType = $this->getType($expr->if, $context);
207:
208:	return TypeCombinator::union(
209:	TypeCombinator::removeFalsey($ifType),
210:	$elseType,
211:	);
212:	}
213:
214:	if ($expr instanceof Expr\FuncCall && $expr->name instanceof Name && $expr->name->toLowerString() === 'constant') {
215:	$firstArg = $expr->args[0] ?? null;
216:	if ($firstArg instanceof Arg && $firstArg->value instanceof String_) {
217:	$constant = $this->constantResolver->resolvePredefinedConstant($firstArg->value->value);
218:	if ($constant !== null) {
219:	return $constant;
220:	}
221:	}
222:	}
223:
224:	if ($expr instanceof Expr\BooleanNot) {
225:	$exprBooleanType = $this->getType($expr->expr, $context)->toBoolean();
226:
227:	if ($exprBooleanType instanceof ConstantBooleanType) {
228:	return new ConstantBooleanType(!$exprBooleanType->getValue());
229:	}
230:
231:	return new BooleanType();
232:	}
233:
234:	if ($expr instanceof Expr\BitwiseNot) {
235:	return $this->getBitwiseNotType($expr->expr, fn (Expr $expr): Type => $this->getType($expr, $context));
236:	}
237:
238:	if ($expr instanceof Expr\BinaryOp\Concat) {
239:	return $this->getConcatType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
240:	}
241:
242:	if ($expr instanceof Expr\BinaryOp\BitwiseAnd) {
243:	return $this->getBitwiseAndType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
244:	}
245:
246:	if ($expr instanceof Expr\BinaryOp\BitwiseOr) {
247:	return $this->getBitwiseOrType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
248:	}
249:
250:	if ($expr instanceof Expr\BinaryOp\BitwiseXor) {
251:	return $this->getBitwiseXorType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
252:	}
253:
254:	if ($expr instanceof Expr\BinaryOp\Spaceship) {
255:	return $this->getSpaceshipType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
256:	}
257:
258:	if (
259:	$expr instanceof Expr\BinaryOp\BooleanAnd
260:	\|\| $expr instanceof Expr\BinaryOp\LogicalAnd
261:	\|\| $expr instanceof Expr\BinaryOp\BooleanOr
262:	\|\| $expr instanceof Expr\BinaryOp\LogicalOr
263:	) {
264:	return new BooleanType();
265:	}
266:
267:	if ($expr instanceof Expr\BinaryOp\Div) {
268:	return $this->getDivType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
269:	}
270:
271:	if ($expr instanceof Expr\BinaryOp\Mod) {
272:	return $this->getModType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
273:	}
274:
275:	if ($expr instanceof Expr\BinaryOp\Plus) {
276:	return $this->getPlusType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
277:	}
278:
279:	if ($expr instanceof Expr\BinaryOp\Minus) {
280:	return $this->getMinusType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
281:	}
282:
283:	if ($expr instanceof Expr\BinaryOp\Mul) {
284:	return $this->getMulType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
285:	}
286:
287:	if ($expr instanceof Expr\BinaryOp\Pow) {
288:	return $this->getPowType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
289:	}
290:
291:	if ($expr instanceof Expr\BinaryOp\ShiftLeft) {
292:	return $this->getShiftLeftType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
293:	}
294:
295:	if ($expr instanceof Expr\BinaryOp\ShiftRight) {
296:	return $this->getShiftRightType($expr->left, $expr->right, fn (Expr $expr): Type => $this->getType($expr, $context));
297:	}
298:
299:	if ($expr instanceof BinaryOp\Identical) {
300:	return $this->resolveIdenticalType(
301:	$this->getType($expr->left, $context),
302:	$this->getType($expr->right, $context),
303:	)->type;
304:	}
305:
306:	if ($expr instanceof BinaryOp\NotIdentical) {
307:	return $this->getType(new Expr\BooleanNot(new BinaryOp\Identical($expr->left, $expr->right)), $context);
308:	}
309:
310:	if ($expr instanceof BinaryOp\Equal) {
311:	return $this->resolveEqualType(
312:	$this->getType($expr->left, $context),
313:	$this->getType($expr->right, $context),
314:	)->type;
315:	}
316:
317:	if ($expr instanceof BinaryOp\NotEqual) {
318:	return $this->getType(new Expr\BooleanNot(new BinaryOp\Equal($expr->left, $expr->right)), $context);
319:	}
320:
321:	if ($expr instanceof Expr\BinaryOp\Smaller) {
322:	return $this->getType($expr->left, $context)->isSmallerThan($this->getType($expr->right, $context), $this->phpVersion)->toBooleanType();
323:	}
324:
325:	if ($expr instanceof Expr\BinaryOp\SmallerOrEqual) {
326:	return $this->getType($expr->left, $context)->isSmallerThanOrEqual($this->getType($expr->right, $context), $this->phpVersion)->toBooleanType();
327:	}
328:
329:	if ($expr instanceof Expr\BinaryOp\Greater) {
330:	return $this->getType($expr->right, $context)->isSmallerThan($this->getType($expr->left, $context), $this->phpVersion)->toBooleanType();
331:	}
332:
333:	if ($expr instanceof Expr\BinaryOp\GreaterOrEqual) {
334:	return $this->getType($expr->right, $context)->isSmallerThanOrEqual($this->getType($expr->left, $context), $this->phpVersion)->toBooleanType();
335:	}
336:
337:	if ($expr instanceof Expr\BinaryOp\LogicalXor) {
338:	$leftBooleanType = $this->getType($expr->left, $context)->toBoolean();
339:	$rightBooleanType = $this->getType($expr->right, $context)->toBoolean();
340:
341:	if (
342:	$leftBooleanType instanceof ConstantBooleanType
343:	&& $rightBooleanType instanceof ConstantBooleanType
344:	) {
345:	return new ConstantBooleanType(
346:	$leftBooleanType->getValue() xor $rightBooleanType->getValue(),
347:	);
348:	}
349:
350:	return new BooleanType();
351:	}
352:
353:	if ($expr instanceof MagicConst\Class_) {
354:	if ($context->getTraitName() !== null) {
355:	return TypeCombinator::intersect(
356:	new ClassStringType(),
357:	new AccessoryLiteralStringType(),
358:	);
359:	}
360:
361:	if ($context->getClassName() === null) {
362:	return new ConstantStringType('');
363:	}
364:
365:	return new ConstantStringType($context->getClassName(), true);
366:	}
367:
368:	if ($expr instanceof MagicConst\Namespace_) {
369:	if ($context->getTraitName() !== null) {
370:	return TypeCombinator::intersect(
371:	new StringType(),
372:	new AccessoryLiteralStringType(),
373:	);
374:	}
375:
376:	return new ConstantStringType($context->getNamespace() ?? '');
377:	}
378:
379:	if ($expr instanceof MagicConst\Method) {
380:	return new ConstantStringType($context->getMethod() ?? '');
381:	}
382:
383:	if ($expr instanceof MagicConst\Function_) {
384:	return new ConstantStringType($context->getFunction() ?? '');
385:	}
386:
387:	if ($expr instanceof MagicConst\Trait_) {
388:	if ($context->getTraitName() === null) {
389:	return new ConstantStringType('');
390:	}
391:
392:	return new ConstantStringType($context->getTraitName(), true);
393:	}
394:
395:	if ($expr instanceof PropertyFetch && $expr->name instanceof Identifier) {
396:	$fetchedOnType = $this->getType($expr->var, $context);
397:	if (!$fetchedOnType->hasProperty($expr->name->name)->yes()) {
398:	return new ErrorType();
399:	}
400:
401:	return $fetchedOnType->getProperty($expr->name->name, new OutOfClassScope())->getReadableType();
402:	}
403:
404:	return new MixedType();
405:	}
406:
407:	/**
408:	* @param callable(Expr): Type $getTypeCallback
409:	*/
410:	public function getConcatType(Expr $left, Expr $right, callable $getTypeCallback): Type
411:	{
412:	$leftType = $getTypeCallback($left);
413:	$rightType = $getTypeCallback($right);
414:
415:	return $this->resolveConcatType($leftType, $rightType);
416:	}
417:
418:	public function resolveConcatType(Type $left, Type $right): Type
419:	{
420:	$leftStringType = $left->toString();
421:	$rightStringType = $right->toString();
422:	if (TypeCombinator::union(
423:	$leftStringType,
424:	$rightStringType,
425:	) instanceof ErrorType) {
426:	return new ErrorType();
427:	}
428:
429:	if ($leftStringType instanceof ConstantStringType && $leftStringType->getValue() === '') {
430:	return $rightStringType;
431:	}
432:
433:	if ($rightStringType instanceof ConstantStringType && $rightStringType->getValue() === '') {
434:	return $leftStringType;
435:	}
436:
437:	if ($leftStringType instanceof ConstantStringType && $rightStringType instanceof ConstantStringType) {
438:	return $leftStringType->append($rightStringType);
439:	}
440:
441:	$leftConstantStrings = $leftStringType->getConstantStrings();
442:	$rightConstantStrings = $rightStringType->getConstantStrings();
443:	$combinedConstantStringsCount = count($leftConstantStrings) * count($rightConstantStrings);
444:
445:	// we limit the number of union-types for performance reasons
446:	if ($combinedConstantStringsCount > 0 && $combinedConstantStringsCount <= 16) {
447:	$strings = [];
448:
449:	foreach ($leftConstantStrings as $leftConstantString) {
450:	if ($leftConstantString->getValue() === '') {
451:	$strings = array_merge($strings, $rightConstantStrings);
452:
453:	continue;
454:	}
455:
456:	foreach ($rightConstantStrings as $rightConstantString) {
457:	if ($rightConstantString->getValue() === '') {
458:	$strings[] = $leftConstantString;
459:
460:	continue;
461:	}
462:
463:	$strings[] = $leftConstantString->append($rightConstantString);
464:	}
465:	}
466:
467:	if (count($strings) > 0) {
468:	return TypeCombinator::union(...$strings);
469:	}
470:	}
471:
472:	$accessoryTypes = [];
473:	if ($leftStringType->isNonEmptyString()->and($rightStringType->isNonEmptyString())->yes()) {
474:	$accessoryTypes[] = new AccessoryNonFalsyStringType();
475:	} elseif ($leftStringType->isNonFalsyString()->or($rightStringType->isNonFalsyString())->yes()) {
476:	$accessoryTypes[] = new AccessoryNonFalsyStringType();
477:	} elseif ($leftStringType->isNonEmptyString()->or($rightStringType->isNonEmptyString())->yes()) {
478:	$accessoryTypes[] = new AccessoryNonEmptyStringType();
479:	}
480:
481:	if ($leftStringType->isLiteralString()->and($rightStringType->isLiteralString())->yes()) {
482:	$accessoryTypes[] = new AccessoryLiteralStringType();
483:	}
484:
485:	if ($leftStringType->isLowercaseString()->and($rightStringType->isLowercaseString())->yes()) {
486:	$accessoryTypes[] = new AccessoryLowercaseStringType();
487:	}
488:
489:	if ($leftStringType->isUppercaseString()->and($rightStringType->isUppercaseString())->yes()) {
490:	$accessoryTypes[] = new AccessoryUppercaseStringType();
491:	}
492:
493:	$leftNumericStringNonEmpty = TypeCombinator::remove($leftStringType, new ConstantStringType(''));
494:	if ($leftNumericStringNonEmpty->isNumericString()->yes()) {
495:	$allRightConstantsZeroOrMore = false;
496:	foreach ($rightConstantStrings as $rightConstantString) {
497:	if ($rightConstantString->getValue() === '') {
498:	continue;
499:	}
500:
501:	if (
502:	!is_numeric($rightConstantString->getValue())
503:	\|\| Strings::match($rightConstantString->getValue(), '#^[0-9]+$#') === null
504:	) {
505:	$allRightConstantsZeroOrMore = false;
506:	break;
507:	}
508:
509:	$allRightConstantsZeroOrMore = true;
510:	}
511:
512:	$zeroOrMoreInteger = IntegerRangeType::fromInterval(0, null);
513:	$nonNegativeRight = $allRightConstantsZeroOrMore \|\| $zeroOrMoreInteger->isSuperTypeOf($right)->yes();
514:	if ($nonNegativeRight) {
515:	$accessoryTypes[] = new AccessoryNumericStringType();
516:	}
517:	}
518:
519:	if (count($accessoryTypes) > 0) {
520:	$accessoryTypes[] = new StringType();
521:	return new IntersectionType($accessoryTypes);
522:	}
523:
524:	return new StringType();
525:	}
526:
527:	/**
528:	* @param callable(Expr): Type $getTypeCallback
529:	*/
530:	public function getArrayType(Expr\Array_ $expr, callable $getTypeCallback): Type
531:	{
532:	if (count($expr->items) > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
533:	return $this->oversizedArrayBuilder->build($expr, $getTypeCallback);
534:	}
535:
536:	$arrayBuilder = ConstantArrayTypeBuilder::createEmpty();
537:	$isList = null;
538:	foreach ($expr->items as $arrayItem) {
539:	$valueType = $getTypeCallback($arrayItem->value);
540:	if ($arrayItem->unpack) {
541:	$constantArrays = $valueType->getConstantArrays();
542:	if (count($constantArrays) === 1) {
543:	$constantArrayType = $constantArrays[0];
544:	$hasStringKey = false;
545:	foreach ($constantArrayType->getKeyTypes() as $keyType) {
546:	if ($keyType->isString()->yes()) {
547:	$hasStringKey = true;
548:	break;
549:	}
550:	}
551:
552:	foreach ($constantArrayType->getValueTypes() as $i => $innerValueType) {
553:	if ($hasStringKey && $this->phpVersion->supportsArrayUnpackingWithStringKeys()) {
554:	$arrayBuilder->setOffsetValueType($constantArrayType->getKeyTypes()[$i], $innerValueType, $constantArrayType->isOptionalKey($i));
555:	} else {
556:	$arrayBuilder->setOffsetValueType(null, $innerValueType, $constantArrayType->isOptionalKey($i));
557:	}
558:	}
559:	} else {
560:	$arrayBuilder->degradeToGeneralArray();
561:
562:	if ($this->phpVersion->supportsArrayUnpackingWithStringKeys() && !$valueType->getIterableKeyType()->isString()->no()) {
563:	$isList = false;
564:	$offsetType = $valueType->getIterableKeyType();
565:	} else {
566:	$isList ??= $arrayBuilder->isList();
567:	$offsetType = new IntegerType();
568:	}
569:
570:	$arrayBuilder->setOffsetValueType($offsetType, $valueType->getIterableValueType(), !$valueType->isIterableAtLeastOnce()->yes());
571:	}
572:	} else {
573:	$arrayBuilder->setOffsetValueType(
574:	$arrayItem->key !== null ? $getTypeCallback($arrayItem->key) : null,
575:	$valueType,
576:	);
577:	}
578:	}
579:
580:	$arrayType = $arrayBuilder->getArray();
581:	if ($isList === true) {
582:	return TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
583:	}
584:
585:	return $arrayType;
586:	}
587:
588:	/**
589:	* @param callable(Expr): Type $getTypeCallback
590:	*/
591:	public function getBitwiseAndType(Expr $left, Expr $right, callable $getTypeCallback): Type
592:	{
593:	$leftType = $getTypeCallback($left);
594:	$rightType = $getTypeCallback($right);
595:
596:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
597:	return $this->getNeverType($leftType, $rightType);
598:	}
599:
600:	$leftTypes = $leftType->getConstantScalarTypes();
601:	$rightTypes = $rightType->getConstantScalarTypes();
602:	$leftTypesCount = count($leftTypes);
603:	$rightTypesCount = count($rightTypes);
604:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
605:	$resultTypes = [];
606:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
607:	foreach ($leftTypes as $leftTypeInner) {
608:	foreach ($rightTypes as $rightTypeInner) {
609:	if ($leftTypeInner instanceof ConstantStringType && $rightTypeInner instanceof ConstantStringType) {
610:	$resultType = $this->getTypeFromValue($leftTypeInner->getValue() & $rightTypeInner->getValue());
611:	} else {
612:	$leftNumberType = $leftTypeInner->toNumber();
613:	$rightNumberType = $rightTypeInner->toNumber();
614:
615:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
616:	return new ErrorType();
617:	}
618:
619:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
620:	throw new ShouldNotHappenException();
621:	}
622:
623:	$resultType = $this->getTypeFromValue($leftNumberType->getValue() & $rightNumberType->getValue());
624:	}
625:	if ($generalize) {
626:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
627:	}
628:	$resultTypes[] = $resultType;
629:	}
630:	}
631:	return TypeCombinator::union(...$resultTypes);
632:	}
633:
634:	if ($leftType->isString()->yes() && $rightType->isString()->yes()) {
635:	return new StringType();
636:	}
637:
638:	$leftNumberType = $leftType->toNumber();
639:	$rightNumberType = $rightType->toNumber();
640:
641:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
642:	return new ErrorType();
643:	}
644:
645:	if ($rightNumberType instanceof ConstantIntegerType && $rightNumberType->getValue() >= 0) {
646:	return IntegerRangeType::fromInterval(0, $rightNumberType->getValue());
647:	}
648:	if ($leftNumberType instanceof ConstantIntegerType && $leftNumberType->getValue() >= 0) {
649:	return IntegerRangeType::fromInterval(0, $leftNumberType->getValue());
650:	}
651:
652:	return new IntegerType();
653:	}
654:
655:	/**
656:	* @param callable(Expr): Type $getTypeCallback
657:	*/
658:	public function getBitwiseOrType(Expr $left, Expr $right, callable $getTypeCallback): Type
659:	{
660:	$leftType = $getTypeCallback($left);
661:	$rightType = $getTypeCallback($right);
662:
663:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
664:	return $this->getNeverType($leftType, $rightType);
665:	}
666:
667:	$leftTypes = $leftType->getConstantScalarTypes();
668:	$rightTypes = $rightType->getConstantScalarTypes();
669:	$leftTypesCount = count($leftTypes);
670:	$rightTypesCount = count($rightTypes);
671:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
672:	$resultTypes = [];
673:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
674:	foreach ($leftTypes as $leftTypeInner) {
675:	foreach ($rightTypes as $rightTypeInner) {
676:	if ($leftTypeInner instanceof ConstantStringType && $rightTypeInner instanceof ConstantStringType) {
677:	$resultType = $this->getTypeFromValue($leftTypeInner->getValue() \| $rightTypeInner->getValue());
678:	} else {
679:	$leftNumberType = $leftTypeInner->toNumber();
680:	$rightNumberType = $rightTypeInner->toNumber();
681:
682:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
683:	return new ErrorType();
684:	}
685:
686:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
687:	throw new ShouldNotHappenException();
688:	}
689:
690:	$resultType = $this->getTypeFromValue($leftNumberType->getValue() \| $rightNumberType->getValue());
691:	}
692:	if ($generalize) {
693:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
694:	}
695:	$resultTypes[] = $resultType;
696:	}
697:	}
698:	return TypeCombinator::union(...$resultTypes);
699:	}
700:
701:	if ($leftType->isString()->yes() && $rightType->isString()->yes()) {
702:	return new StringType();
703:	}
704:
705:	if (TypeCombinator::union($leftType->toNumber(), $rightType->toNumber()) instanceof ErrorType) {
706:	return new ErrorType();
707:	}
708:
709:	return new IntegerType();
710:	}
711:
712:	/**
713:	* @param callable(Expr): Type $getTypeCallback
714:	*/
715:	public function getBitwiseXorType(Expr $left, Expr $right, callable $getTypeCallback): Type
716:	{
717:	$leftType = $getTypeCallback($left);
718:	$rightType = $getTypeCallback($right);
719:
720:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
721:	return $this->getNeverType($leftType, $rightType);
722:	}
723:
724:	$leftTypes = $leftType->getConstantScalarTypes();
725:	$rightTypes = $rightType->getConstantScalarTypes();
726:	$leftTypesCount = count($leftTypes);
727:	$rightTypesCount = count($rightTypes);
728:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
729:	$resultTypes = [];
730:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
731:	foreach ($leftTypes as $leftTypeInner) {
732:	foreach ($rightTypes as $rightTypeInner) {
733:	if ($leftTypeInner instanceof ConstantStringType && $rightTypeInner instanceof ConstantStringType) {
734:	$resultType = $this->getTypeFromValue($leftTypeInner->getValue() ^ $rightTypeInner->getValue());
735:	} else {
736:	$leftNumberType = $leftTypeInner->toNumber();
737:	$rightNumberType = $rightTypeInner->toNumber();
738:
739:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
740:	return new ErrorType();
741:	}
742:
743:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
744:	throw new ShouldNotHappenException();
745:	}
746:
747:	$resultType = $this->getTypeFromValue($leftNumberType->getValue() ^ $rightNumberType->getValue());
748:	}
749:	if ($generalize) {
750:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
751:	}
752:	$resultTypes[] = $resultType;
753:	}
754:	}
755:	return TypeCombinator::union(...$resultTypes);
756:	}
757:
758:	if ($leftType->isString()->yes() && $rightType->isString()->yes()) {
759:	return new StringType();
760:	}
761:
762:	if (TypeCombinator::union($leftType->toNumber(), $rightType->toNumber()) instanceof ErrorType) {
763:	return new ErrorType();
764:	}
765:
766:	return new IntegerType();
767:	}
768:
769:	/**
770:	* @param callable(Expr): Type $getTypeCallback
771:	*/
772:	public function getSpaceshipType(Expr $left, Expr $right, callable $getTypeCallback): Type
773:	{
774:	$callbackLeftType = $getTypeCallback($left);
775:	$callbackRightType = $getTypeCallback($right);
776:
777:	if ($callbackLeftType instanceof NeverType \|\| $callbackRightType instanceof NeverType) {
778:	return $this->getNeverType($callbackLeftType, $callbackRightType);
779:	}
780:
781:	$leftTypes = $callbackLeftType->getConstantScalarTypes();
782:	$rightTypes = $callbackRightType->getConstantScalarTypes();
783:
784:	$leftTypesCount = count($leftTypes);
785:	$rightTypesCount = count($rightTypes);
786:	if ($leftTypesCount > 0 && $rightTypesCount > 0 && $leftTypesCount * $rightTypesCount <= self::CALCULATE_SCALARS_LIMIT) {
787:	$resultTypes = [];
788:	foreach ($leftTypes as $leftType) {
789:	foreach ($rightTypes as $rightType) {
790:	$leftValue = $leftType->getValue();
791:	$rightValue = $rightType->getValue();
792:	$resultType = $this->getTypeFromValue($leftValue <=> $rightValue);
793:	$resultTypes[] = $resultType;
794:	}
795:	}
796:	return TypeCombinator::union(...$resultTypes);
797:	}
798:
799:	return IntegerRangeType::fromInterval(-1, 1);
800:	}
801:
802:	/**
803:	* @param callable(Expr): Type $getTypeCallback
804:	*/
805:	public function getDivType(Expr $left, Expr $right, callable $getTypeCallback): Type
806:	{
807:	$leftType = $getTypeCallback($left);
808:	$rightType = $getTypeCallback($right);
809:
810:	$leftTypes = $leftType->getConstantScalarTypes();
811:	$rightTypes = $rightType->getConstantScalarTypes();
812:	$leftTypesCount = count($leftTypes);
813:	$rightTypesCount = count($rightTypes);
814:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
815:	$resultTypes = [];
816:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
817:	foreach ($leftTypes as $leftTypeInner) {
818:	foreach ($rightTypes as $rightTypeInner) {
819:	$leftNumberType = $leftTypeInner->toNumber();
820:	$rightNumberType = $rightTypeInner->toNumber();
821:
822:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
823:	return new ErrorType();
824:	}
825:
826:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
827:	throw new ShouldNotHappenException();
828:	}
829:
830:	if (in_array($rightNumberType->getValue(), [0, 0.0], true)) {
831:	return new ErrorType();
832:	}
833:
834:	$resultType = $this->getTypeFromValue($leftNumberType->getValue() / $rightNumberType->getValue()); // @phpstan-ignore binaryOp.invalid
835:	if ($generalize) {
836:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
837:	}
838:	$resultTypes[] = $resultType;
839:	}
840:	}
841:	return TypeCombinator::union(...$resultTypes);
842:	}
843:
844:	$rightScalarValues = $rightType->toNumber()->getConstantScalarValues();
845:	foreach ($rightScalarValues as $scalarValue) {
846:	if ($scalarValue === 0 \|\| $scalarValue === 0.0) {
847:	return new ErrorType();
848:	}
849:	}
850:
851:	return $this->resolveCommonMath(new BinaryOp\Div($left, $right), $leftType, $rightType);
852:	}
853:
854:	/**
855:	* @param callable(Expr): Type $getTypeCallback
856:	*/
857:	public function getModType(Expr $left, Expr $right, callable $getTypeCallback): Type
858:	{
859:	$leftType = $getTypeCallback($left);
860:	$rightType = $getTypeCallback($right);
861:
862:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
863:	return $this->getNeverType($leftType, $rightType);
864:	}
865:
866:	if ($leftType->toNumber() instanceof ErrorType \|\| $rightType->toNumber() instanceof ErrorType) {
867:	return new ErrorType();
868:	}
869:
870:	$leftTypes = $leftType->getConstantScalarTypes();
871:	$rightTypes = $rightType->getConstantScalarTypes();
872:	$leftTypesCount = count($leftTypes);
873:	$rightTypesCount = count($rightTypes);
874:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
875:	$resultTypes = [];
876:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
877:	foreach ($leftTypes as $leftTypeInner) {
878:	foreach ($rightTypes as $rightTypeInner) {
879:	$leftNumberType = $leftTypeInner->toNumber();
880:	$rightNumberType = $rightTypeInner->toNumber();
881:
882:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
883:	return new ErrorType();
884:	}
885:
886:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
887:	throw new ShouldNotHappenException();
888:	}
889:
890:	$rightIntegerValue = (int) $rightNumberType->getValue();
891:	if ($rightIntegerValue === 0) {
892:	return new ErrorType();
893:	}
894:
895:	$resultType = $this->getTypeFromValue((int) $leftNumberType->getValue() % $rightIntegerValue);
896:	if ($generalize) {
897:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
898:	}
899:	$resultTypes[] = $resultType;
900:	}
901:	}
902:	return TypeCombinator::union(...$resultTypes);
903:	}
904:
905:	$integerType = $rightType->toInteger();
906:	if ($integerType instanceof ConstantIntegerType && $integerType->getValue() === 1) {
907:	return new ConstantIntegerType(0);
908:	}
909:
910:	$rightScalarValues = $rightType->toNumber()->getConstantScalarValues();
911:	foreach ($rightScalarValues as $scalarValue) {
912:
913:	if ($scalarValue === 0 \|\| $scalarValue === 0.0) {
914:	return new ErrorType();
915:	}
916:	}
917:
918:	$positiveInt = IntegerRangeType::fromInterval(0, null);
919:	if ($rightType->isInteger()->yes()) {
920:	$rangeMin = null;
921:	$rangeMax = null;
922:
923:	if ($rightType instanceof IntegerRangeType) {
924:	$rangeMax = $rightType->getMax() !== null ? $rightType->getMax() - 1 : null;
925:	} elseif ($rightType instanceof ConstantIntegerType) {
926:	$rangeMax = $rightType->getValue() - 1;
927:	} elseif ($rightType instanceof UnionType) {
928:	foreach ($rightType->getTypes() as $type) {
929:	if ($type instanceof IntegerRangeType) {
930:	if ($type->getMax() === null) {
931:	$rangeMax = null;
932:	} else {
933:	$rangeMax = max($rangeMax, $type->getMax());
934:	}
935:	} elseif ($type instanceof ConstantIntegerType) {
936:	$rangeMax = max($rangeMax, $type->getValue() - 1);
937:	}
938:	}
939:	}
940:
941:	if ($positiveInt->isSuperTypeOf($leftType)->yes()) {
942:	$rangeMin = 0;
943:	} elseif ($rangeMax !== null) {
944:	$rangeMin = $rangeMax * -1;
945:	}
946:
947:	return IntegerRangeType::fromInterval($rangeMin, $rangeMax);
948:	} elseif ($positiveInt->isSuperTypeOf($leftType)->yes()) {
949:	return IntegerRangeType::fromInterval(0, null);
950:	}
951:
952:	return new IntegerType();
953:	}
954:
955:	/**
956:	* @param callable(Expr): Type $getTypeCallback
957:	*/
958:	public function getPlusType(Expr $left, Expr $right, callable $getTypeCallback): Type
959:	{
960:	$leftType = $getTypeCallback($left);
961:	$rightType = $getTypeCallback($right);
962:
963:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
964:	return $this->getNeverType($leftType, $rightType);
965:	}
966:
967:	$leftTypes = $leftType->getConstantScalarTypes();
968:	$rightTypes = $rightType->getConstantScalarTypes();
969:	$leftTypesCount = count($leftTypes);
970:	$rightTypesCount = count($rightTypes);
971:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
972:	$resultTypes = [];
973:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
974:	foreach ($leftTypes as $leftTypeInner) {
975:	foreach ($rightTypes as $rightTypeInner) {
976:	$leftNumberType = $leftTypeInner->toNumber();
977:	$rightNumberType = $rightTypeInner->toNumber();
978:
979:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
980:	return new ErrorType();
981:	}
982:
983:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
984:	throw new ShouldNotHappenException();
985:	}
986:
987:	$resultType = $this->getTypeFromValue($leftNumberType->getValue() + $rightNumberType->getValue());
988:	if ($generalize) {
989:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
990:	}
991:	$resultTypes[] = $resultType;
992:	}
993:	}
994:
995:	return TypeCombinator::union(...$resultTypes);
996:	}
997:
998:	$leftConstantArrays = $leftType->getConstantArrays();
999:	$rightConstantArrays = $rightType->getConstantArrays();
1000:
1001:	$leftCount = count($leftConstantArrays);
1002:	$rightCount = count($rightConstantArrays);
1003:	if ($leftCount > 0 && $rightCount > 0
1004:	&& ($leftCount + $rightCount < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT)) {
1005:	$resultTypes = [];
1006:	foreach ($rightConstantArrays as $rightConstantArray) {
1007:	foreach ($leftConstantArrays as $leftConstantArray) {
1008:	$newArrayBuilder = ConstantArrayTypeBuilder::createFromConstantArray($rightConstantArray);
1009:	foreach ($leftConstantArray->getKeyTypes() as $i => $leftKeyType) {
1010:	$optional = $leftConstantArray->isOptionalKey($i);
1011:	$valueType = $leftConstantArray->getOffsetValueType($leftKeyType);
1012:	if (!$optional) {
1013:	if ($rightConstantArray->hasOffsetValueType($leftKeyType)->maybe()) {
1014:	$valueType = TypeCombinator::union($valueType, $rightConstantArray->getOffsetValueType($leftKeyType));
1015:	}
1016:	}
1017:	$newArrayBuilder->setOffsetValueType(
1018:	$leftKeyType,
1019:	$valueType,
1020:	$optional,
1021:	);
1022:	}
1023:	$resultTypes[] = $newArrayBuilder->getArray();
1024:	}
1025:	}
1026:	return TypeCombinator::union(...$resultTypes);
1027:	}
1028:
1029:	$leftIsArray = $leftType->isArray();
1030:	$rightIsArray = $rightType->isArray();
1031:	if ($leftIsArray->yes() && $rightIsArray->yes()) {
1032:	if ($leftType->getIterableKeyType()->equals($rightType->getIterableKeyType())) {
1033:	// to preserve BenevolentUnionType
1034:	$keyType = $leftType->getIterableKeyType();
1035:	} else {
1036:	$keyTypes = [];
1037:	foreach ([
1038:	$leftType->getIterableKeyType(),
1039:	$rightType->getIterableKeyType(),
1040:	] as $keyType) {
1041:	$keyTypes[] = $keyType;
1042:	}
1043:	$keyType = TypeCombinator::union(...$keyTypes);
1044:	}
1045:
1046:	$arrayType = new ArrayType(
1047:	$keyType,
1048:	TypeCombinator::union($leftType->getIterableValueType(), $rightType->getIterableValueType()),
1049:	);
1050:
1051:	if ($leftType->isIterableAtLeastOnce()->yes() \|\| $rightType->isIterableAtLeastOnce()->yes()) {
1052:	$arrayType = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
1053:	}
1054:	if ($leftType->isList()->yes() && $rightType->isList()->yes()) {
1055:	$arrayType = TypeCombinator::intersect($arrayType, new AccessoryArrayListType());
1056:	}
1057:
1058:	return $arrayType;
1059:	}
1060:
1061:	if ($leftType instanceof MixedType && $rightType instanceof MixedType) {
1062:	if (
1063:	($leftIsArray->no() && $rightIsArray->no())
1064:	) {
1065:	return new BenevolentUnionType([
1066:	new FloatType(),
1067:	new IntegerType(),
1068:	]);
1069:	}
1070:	return new BenevolentUnionType([
1071:	new FloatType(),
1072:	new IntegerType(),
1073:	new ArrayType(new MixedType(), new MixedType()),
1074:	]);
1075:	}
1076:
1077:	if (
1078:	($leftIsArray->yes() && $rightIsArray->no())
1079:	\|\| ($leftIsArray->no() && $rightIsArray->yes())
1080:	) {
1081:	return new ErrorType();
1082:	}
1083:
1084:	if (
1085:	($leftIsArray->yes() && $rightIsArray->maybe())
1086:	\|\| ($leftIsArray->maybe() && $rightIsArray->yes())
1087:	) {
1088:	$resultType = new ArrayType(new MixedType(), new MixedType());
1089:	if ($leftType->isIterableAtLeastOnce()->yes() \|\| $rightType->isIterableAtLeastOnce()->yes()) {
1090:	return TypeCombinator::intersect($resultType, new NonEmptyArrayType());
1091:	}
1092:
1093:	return $resultType;
1094:	}
1095:
1096:	if ($leftIsArray->maybe() && $rightIsArray->maybe()) {
1097:	$plusable = new UnionType([
1098:	new StringType(),
1099:	new FloatType(),
1100:	new IntegerType(),
1101:	new ArrayType(new MixedType(), new MixedType()),
1102:	new BooleanType(),
1103:	]);
1104:
1105:	$plusableSuperTypeOfLeft = $plusable->isSuperTypeOf($leftType)->yes();
1106:	$plusableSuperTypeOfRight = $plusable->isSuperTypeOf($rightType)->yes();
1107:	if ($plusableSuperTypeOfLeft && $plusableSuperTypeOfRight) {
1108:	return TypeCombinator::union($leftType, $rightType);
1109:	}
1110:	if ($plusableSuperTypeOfLeft && $rightType instanceof MixedType) {
1111:	return $leftType;
1112:	}
1113:	if ($plusableSuperTypeOfRight && $leftType instanceof MixedType) {
1114:	return $rightType;
1115:	}
1116:	}
1117:
1118:	return $this->resolveCommonMath(new BinaryOp\Plus($left, $right), $leftType, $rightType);
1119:	}
1120:
1121:	/**
1122:	* @param callable(Expr): Type $getTypeCallback
1123:	*/
1124:	public function getMinusType(Expr $left, Expr $right, callable $getTypeCallback): Type
1125:	{
1126:	$leftType = $getTypeCallback($left);
1127:	$rightType = $getTypeCallback($right);
1128:
1129:	$leftTypes = $leftType->getConstantScalarTypes();
1130:	$rightTypes = $rightType->getConstantScalarTypes();
1131:	$leftTypesCount = count($leftTypes);
1132:	$rightTypesCount = count($rightTypes);
1133:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
1134:	$resultTypes = [];
1135:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
1136:	foreach ($leftTypes as $leftTypeInner) {
1137:	foreach ($rightTypes as $rightTypeInner) {
1138:	$leftNumberType = $leftTypeInner->toNumber();
1139:	$rightNumberType = $rightTypeInner->toNumber();
1140:
1141:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
1142:	return new ErrorType();
1143:	}
1144:
1145:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
1146:	throw new ShouldNotHappenException();
1147:	}
1148:
1149:	$resultType = $this->getTypeFromValue($leftNumberType->getValue() - $rightNumberType->getValue());
1150:	if ($generalize) {
1151:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
1152:	}
1153:	$resultTypes[] = $resultType;
1154:	}
1155:	}
1156:
1157:	return TypeCombinator::union(...$resultTypes);
1158:	}
1159:
1160:	return $this->resolveCommonMath(new BinaryOp\Minus($left, $right), $leftType, $rightType);
1161:	}
1162:
1163:	/**
1164:	* @param callable(Expr): Type $getTypeCallback
1165:	*/
1166:	public function getMulType(Expr $left, Expr $right, callable $getTypeCallback): Type
1167:	{
1168:	$leftType = $getTypeCallback($left);
1169:	$rightType = $getTypeCallback($right);
1170:
1171:	$leftTypes = $leftType->getConstantScalarTypes();
1172:	$rightTypes = $rightType->getConstantScalarTypes();
1173:	$leftTypesCount = count($leftTypes);
1174:	$rightTypesCount = count($rightTypes);
1175:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
1176:	$resultTypes = [];
1177:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
1178:	foreach ($leftTypes as $leftTypeInner) {
1179:	foreach ($rightTypes as $rightTypeInner) {
1180:	$leftNumberType = $leftTypeInner->toNumber();
1181:	$rightNumberType = $rightTypeInner->toNumber();
1182:
1183:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
1184:	return new ErrorType();
1185:	}
1186:
1187:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
1188:	throw new ShouldNotHappenException();
1189:	}
1190:
1191:	$resultType = $this->getTypeFromValue($leftNumberType->getValue() * $rightNumberType->getValue());
1192:	if ($generalize) {
1193:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
1194:	}
1195:	$resultTypes[] = $resultType;
1196:	}
1197:	}
1198:
1199:	return TypeCombinator::union(...$resultTypes);
1200:	}
1201:
1202:	$leftNumberType = $leftType->toNumber();
1203:	if ($leftNumberType instanceof ConstantIntegerType && $leftNumberType->getValue() === 0) {
1204:	if ($rightType->isFloat()->yes()) {
1205:	return new ConstantFloatType(0.0);
1206:	}
1207:	return new ConstantIntegerType(0);
1208:	}
1209:	$rightNumberType = $rightType->toNumber();
1210:	if ($rightNumberType instanceof ConstantIntegerType && $rightNumberType->getValue() === 0) {
1211:	if ($leftType->isFloat()->yes()) {
1212:	return new ConstantFloatType(0.0);
1213:	}
1214:	return new ConstantIntegerType(0);
1215:	}
1216:
1217:	return $this->resolveCommonMath(new BinaryOp\Mul($left, $right), $leftType, $rightType);
1218:	}
1219:
1220:	/**
1221:	* @param callable(Expr): Type $getTypeCallback
1222:	*/
1223:	public function getPowType(Expr $left, Expr $right, callable $getTypeCallback): Type
1224:	{
1225:	$leftType = $getTypeCallback($left);
1226:	$rightType = $getTypeCallback($right);
1227:
1228:	$exponentiatedTyped = $leftType->exponentiate($rightType);
1229:	if (!$exponentiatedTyped instanceof ErrorType) {
1230:	return $exponentiatedTyped;
1231:	}
1232:
1233:	$extensionSpecified = $this->callOperatorTypeSpecifyingExtensions(new BinaryOp\Pow($left, $right), $leftType, $rightType);
1234:	if ($extensionSpecified !== null) {
1235:	return $extensionSpecified;
1236:	}
1237:
1238:	return new ErrorType();
1239:	}
1240:
1241:	/**
1242:	* @param callable(Expr): Type $getTypeCallback
1243:	*/
1244:	public function getShiftLeftType(Expr $left, Expr $right, callable $getTypeCallback): Type
1245:	{
1246:	$leftType = $getTypeCallback($left);
1247:	$rightType = $getTypeCallback($right);
1248:
1249:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
1250:	return $this->getNeverType($leftType, $rightType);
1251:	}
1252:
1253:	$leftTypes = $leftType->getConstantScalarTypes();
1254:	$rightTypes = $rightType->getConstantScalarTypes();
1255:	$leftTypesCount = count($leftTypes);
1256:	$rightTypesCount = count($rightTypes);
1257:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
1258:	$resultTypes = [];
1259:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
1260:	foreach ($leftTypes as $leftTypeInner) {
1261:	foreach ($rightTypes as $rightTypeInner) {
1262:	$leftNumberType = $leftTypeInner->toNumber();
1263:	$rightNumberType = $rightTypeInner->toNumber();
1264:
1265:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
1266:	return new ErrorType();
1267:	}
1268:
1269:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
1270:	throw new ShouldNotHappenException();
1271:	}
1272:
1273:	if ($rightNumberType->getValue() < 0) {
1274:	return new ErrorType();
1275:	}
1276:
1277:	$resultType = $this->getTypeFromValue(intval($leftNumberType->getValue()) << intval($rightNumberType->getValue()));
1278:	if ($generalize) {
1279:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
1280:	}
1281:	$resultTypes[] = $resultType;
1282:	}
1283:	}
1284:
1285:	return TypeCombinator::union(...$resultTypes);
1286:	}
1287:
1288:	$leftNumberType = $leftType->toNumber();
1289:	$rightNumberType = $rightType->toNumber();
1290:
1291:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
1292:	return new ErrorType();
1293:	}
1294:
1295:	return $this->resolveCommonMath(new Expr\BinaryOp\ShiftLeft($left, $right), $leftType, $rightType);
1296:	}
1297:
1298:	/**
1299:	* @param callable(Expr): Type $getTypeCallback
1300:	*/
1301:	public function getShiftRightType(Expr $left, Expr $right, callable $getTypeCallback): Type
1302:	{
1303:	$leftType = $getTypeCallback($left);
1304:	$rightType = $getTypeCallback($right);
1305:
1306:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
1307:	return $this->getNeverType($leftType, $rightType);
1308:	}
1309:
1310:	$leftTypes = $leftType->getConstantScalarTypes();
1311:	$rightTypes = $rightType->getConstantScalarTypes();
1312:	$leftTypesCount = count($leftTypes);
1313:	$rightTypesCount = count($rightTypes);
1314:	if ($leftTypesCount > 0 && $rightTypesCount > 0) {
1315:	$resultTypes = [];
1316:	$generalize = $leftTypesCount * $rightTypesCount > self::CALCULATE_SCALARS_LIMIT;
1317:	foreach ($leftTypes as $leftTypeInner) {
1318:	foreach ($rightTypes as $rightTypeInner) {
1319:	$leftNumberType = $leftTypeInner->toNumber();
1320:	$rightNumberType = $rightTypeInner->toNumber();
1321:
1322:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
1323:	return new ErrorType();
1324:	}
1325:
1326:	if (!$leftNumberType instanceof ConstantScalarType \|\| !$rightNumberType instanceof ConstantScalarType) {
1327:	throw new ShouldNotHappenException();
1328:	}
1329:
1330:	if ($rightNumberType->getValue() < 0) {
1331:	return new ErrorType();
1332:	}
1333:
1334:	$resultType = $this->getTypeFromValue(intval($leftNumberType->getValue()) >> intval($rightNumberType->getValue()));
1335:	if ($generalize) {
1336:	$resultType = $resultType->generalize(GeneralizePrecision::lessSpecific());
1337:	}
1338:	$resultTypes[] = $resultType;
1339:	}
1340:	}
1341:
1342:	return TypeCombinator::union(...$resultTypes);
1343:	}
1344:
1345:	$leftNumberType = $leftType->toNumber();
1346:	$rightNumberType = $rightType->toNumber();
1347:
1348:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
1349:	return new ErrorType();
1350:	}
1351:
1352:	return $this->resolveCommonMath(new Expr\BinaryOp\ShiftRight($left, $right), $leftType, $rightType);
1353:	}
1354:
1355:	/**
1356:	* @return TypeResult<BooleanType>
1357:	*/
1358:	public function resolveIdenticalType(Type $leftType, Type $rightType): TypeResult
1359:	{
1360:	if ($leftType instanceof NeverType \|\| $rightType instanceof NeverType) {
1361:	return new TypeResult(new ConstantBooleanType(false), []);
1362:	}
1363:
1364:	if ($leftType instanceof ConstantScalarType && $rightType instanceof ConstantScalarType) {
1365:	return new TypeResult(new ConstantBooleanType($leftType->getValue() === $rightType->getValue()), []);
1366:	}
1367:
1368:	$leftTypeFiniteTypes = $leftType->getFiniteTypes();
1369:	$rightTypeFiniteType = $rightType->getFiniteTypes();
1370:	if (count($leftTypeFiniteTypes) === 1 && count($rightTypeFiniteType) === 1) {
1371:	return new TypeResult(new ConstantBooleanType($leftTypeFiniteTypes[0]->equals($rightTypeFiniteType[0])), []);
1372:	}
1373:
1374:	$leftIsSuperTypeOfRight = $leftType->isSuperTypeOf($rightType);
1375:	$rightIsSuperTypeOfLeft = $rightType->isSuperTypeOf($leftType);
1376:	if ($leftIsSuperTypeOfRight->no() && $rightIsSuperTypeOfLeft->no()) {
1377:	return new TypeResult(new ConstantBooleanType(false), array_merge($leftIsSuperTypeOfRight->reasons, $rightIsSuperTypeOfLeft->reasons));
1378:	}
1379:
1380:	if ($leftType instanceof ConstantArrayType && $rightType instanceof ConstantArrayType) {
1381:	return $this->resolveConstantArrayTypeComparison($leftType, $rightType, fn ($leftValueType, $rightValueType): TypeResult => $this->resolveIdenticalType($leftValueType, $rightValueType));
1382:	}
1383:
1384:	return new TypeResult(new BooleanType(), []);
1385:	}
1386:
1387:	/**
1388:	* @return TypeResult<BooleanType>
1389:	*/
1390:	public function resolveEqualType(Type $leftType, Type $rightType): TypeResult
1391:	{
1392:	if (
1393:	($leftType->isEnum()->yes() && $rightType->isTrue()->no())
1394:	\|\| ($rightType->isEnum()->yes() && $leftType->isTrue()->no())
1395:	) {
1396:	return $this->resolveIdenticalType($leftType, $rightType);
1397:	}
1398:
1399:	if ($leftType instanceof ConstantArrayType && $rightType instanceof ConstantArrayType) {
1400:	return $this->resolveConstantArrayTypeComparison($leftType, $rightType, fn ($leftValueType, $rightValueType): TypeResult => $this->resolveEqualType($leftValueType, $rightValueType));
1401:	}
1402:
1403:	return new TypeResult($leftType->looseCompare($rightType, $this->phpVersion), []);
1404:	}
1405:
1406:	/**
1407:	* @param callable(Type, Type): TypeResult<BooleanType> $valueComparisonCallback
1408:	* @return TypeResult<BooleanType>
1409:	*/
1410:	private function resolveConstantArrayTypeComparison(ConstantArrayType $leftType, ConstantArrayType $rightType, callable $valueComparisonCallback): TypeResult
1411:	{
1412:	$leftKeyTypes = $leftType->getKeyTypes();
1413:	$rightKeyTypes = $rightType->getKeyTypes();
1414:	$leftValueTypes = $leftType->getValueTypes();
1415:	$rightValueTypes = $rightType->getValueTypes();
1416:
1417:	$resultType = new ConstantBooleanType(true);
1418:
1419:	foreach ($leftKeyTypes as $i => $leftKeyType) {
1420:	$leftOptional = $leftType->isOptionalKey($i);
1421:	if ($leftOptional) {
1422:	$resultType = new BooleanType();
1423:	}
1424:
1425:	if (count($rightKeyTypes) === 0) {
1426:	if (!$leftOptional) {
1427:	return new TypeResult(new ConstantBooleanType(false), []);
1428:	}
1429:	continue;
1430:	}
1431:
1432:	$found = false;
1433:	foreach ($rightKeyTypes as $j => $rightKeyType) {
1434:	unset($rightKeyTypes[$j]);
1435:
1436:	if ($leftKeyType->equals($rightKeyType)) {
1437:	$found = true;
1438:	break;
1439:	} elseif (!$rightType->isOptionalKey($j)) {
1440:	return new TypeResult(new ConstantBooleanType(false), []);
1441:	}
1442:	}
1443:
1444:	if (!$found) {
1445:	if (!$leftOptional) {
1446:	return new TypeResult(new ConstantBooleanType(false), []);
1447:	}
1448:	continue;
1449:	}
1450:
1451:	if (!isset($j)) {
1452:	throw new ShouldNotHappenException();
1453:	}
1454:
1455:	$rightOptional = $rightType->isOptionalKey($j);
1456:	if ($rightOptional) {
1457:	$resultType = new BooleanType();
1458:	if ($leftOptional) {
1459:	continue;
1460:	}
1461:	}
1462:
1463:	$leftIdenticalToRightResult = $valueComparisonCallback($leftValueTypes[$i], $rightValueTypes[$j]);
1464:	$leftIdenticalToRight = $leftIdenticalToRightResult->type;
1465:	if ($leftIdenticalToRight->isFalse()->yes()) {
1466:	return $leftIdenticalToRightResult;
1467:	}
1468:	$resultType = TypeCombinator::union($resultType, $leftIdenticalToRight);
1469:	}
1470:
1471:	foreach (array_keys($rightKeyTypes) as $j) {
1472:	if (!$rightType->isOptionalKey($j)) {
1473:	return new TypeResult(new ConstantBooleanType(false), []);
1474:	}
1475:	$resultType = new BooleanType();
1476:	}
1477:
1478:	return new TypeResult($resultType->toBoolean(), []);
1479:	}
1480:
1481:	private function callOperatorTypeSpecifyingExtensions(Expr\BinaryOp $expr, Type $leftType, Type $rightType): ?Type
1482:	{
1483:	$operatorSigil = $expr->getOperatorSigil();
1484:	$operatorTypeSpecifyingExtensions = $this->operatorTypeSpecifyingExtensionRegistryProvider->getRegistry()->getOperatorTypeSpecifyingExtensions($operatorSigil, $leftType, $rightType);
1485:
1486:	/** @var Type[] $extensionTypes */
1487:	$extensionTypes = [];
1488:
1489:	foreach ($operatorTypeSpecifyingExtensions as $extension) {
1490:	$extensionTypes[] = $extension->specifyType($operatorSigil, $leftType, $rightType);
1491:	}
1492:
1493:	if (count($extensionTypes) > 0) {
1494:	return TypeCombinator::union(...$extensionTypes);
1495:	}
1496:
1497:	return null;
1498:	}
1499:
1500:	/**
1501:	* @param BinaryOp\Plus\|BinaryOp\Minus\|BinaryOp\Mul\|BinaryOp\Div\|BinaryOp\ShiftLeft\|BinaryOp\ShiftRight $expr
1502:	*/
1503:	private function resolveCommonMath(Expr\BinaryOp $expr, Type $leftType, Type $rightType): Type
1504:	{
1505:	$types = TypeCombinator::union($leftType, $rightType);
1506:	$leftNumberType = $leftType->toNumber();
1507:	$rightNumberType = $rightType->toNumber();
1508:
1509:	if (
1510:	!$types instanceof MixedType
1511:	&& (
1512:	$rightNumberType instanceof IntegerRangeType
1513:	\|\| $rightNumberType instanceof ConstantIntegerType
1514:	\|\| $rightNumberType instanceof UnionType
1515:	)
1516:	) {
1517:	if ($leftNumberType instanceof IntegerRangeType \|\| $leftNumberType instanceof ConstantIntegerType) {
1518:	return $this->integerRangeMath(
1519:	$leftNumberType,
1520:	$expr,
1521:	$rightNumberType,
1522:	);
1523:	} elseif ($leftNumberType instanceof UnionType) {
1524:	$unionParts = [];
1525:
1526:	foreach ($leftNumberType->getTypes() as $type) {
1527:	$numberType = $type->toNumber();
1528:	if ($numberType instanceof IntegerRangeType \|\| $numberType instanceof ConstantIntegerType) {
1529:	$unionParts[] = $this->integerRangeMath($numberType, $expr, $rightNumberType);
1530:	} else {
1531:	$unionParts[] = $numberType;
1532:	}
1533:	}
1534:
1535:	$union = TypeCombinator::union(...$unionParts);
1536:	if ($leftNumberType instanceof BenevolentUnionType) {
1537:	return TypeUtils::toBenevolentUnion($union)->toNumber();
1538:	}
1539:
1540:	return $union->toNumber();
1541:	}
1542:	}
1543:
1544:	$specifiedTypes = $this->callOperatorTypeSpecifyingExtensions($expr, $leftType, $rightType);
1545:	if ($specifiedTypes !== null) {
1546:	return $specifiedTypes;
1547:	}
1548:
1549:	if (
1550:	$leftType->isArray()->yes()
1551:	\|\| $rightType->isArray()->yes()
1552:	\|\| $types->isArray()->yes()
1553:	) {
1554:	return new ErrorType();
1555:	}
1556:
1557:	if ($leftNumberType instanceof ErrorType \|\| $rightNumberType instanceof ErrorType) {
1558:	return new ErrorType();
1559:	}
1560:	if ($leftNumberType instanceof NeverType \|\| $rightNumberType instanceof NeverType) {
1561:	return $this->getNeverType($leftNumberType, $rightNumberType);
1562:	}
1563:
1564:	if (
1565:	$leftNumberType->isFloat()->yes()
1566:	\|\| $rightNumberType->isFloat()->yes()
1567:	) {
1568:	if ($expr instanceof Expr\BinaryOp\ShiftLeft \|\| $expr instanceof Expr\BinaryOp\ShiftRight) {
1569:	return new IntegerType();
1570:	}
1571:	return new FloatType();
1572:	}
1573:
1574:	$resultType = TypeCombinator::union($leftNumberType, $rightNumberType);
1575:	if ($expr instanceof Expr\BinaryOp\Div) {
1576:	if ($types instanceof MixedType \|\| $resultType->isInteger()->yes()) {
1577:	return new BenevolentUnionType([new IntegerType(), new FloatType()]);
1578:	}
1579:
1580:	return new UnionType([new IntegerType(), new FloatType()]);
1581:	}
1582:
1583:	if ($types instanceof MixedType
1584:	\|\| $leftType instanceof BenevolentUnionType
1585:	\|\| $rightType instanceof BenevolentUnionType
1586:	) {
1587:	return TypeUtils::toBenevolentUnion($resultType);
1588:	}
1589:
1590:	return $resultType;
1591:	}
1592:
1593:	/**
1594:	* @param ConstantIntegerType\|IntegerRangeType $range
1595:	* @param BinaryOp\Div\|BinaryOp\Minus\|BinaryOp\Mul\|BinaryOp\Plus\|BinaryOp\ShiftLeft\|BinaryOp\ShiftRight $node
1596:	*/
1597:	private function integerRangeMath(Type $range, BinaryOp $node, Type $operand): Type
1598:	{
1599:	if ($range instanceof IntegerRangeType) {
1600:	$rangeMin = $range->getMin();
1601:	$rangeMax = $range->getMax();
1602:	} else {
1603:	$rangeMin = $range->getValue();
1604:	$rangeMax = $rangeMin;
1605:	}
1606:
1607:	if ($operand instanceof UnionType) {
1608:
1609:	$unionParts = [];
1610:
1611:	foreach ($operand->getTypes() as $type) {
1612:	$numberType = $type->toNumber();
1613:	if ($numberType instanceof IntegerRangeType \|\| $numberType instanceof ConstantIntegerType) {
1614:	$unionParts[] = $this->integerRangeMath($range, $node, $numberType);
1615:	} else {
1616:	$unionParts[] = $type->toNumber();
1617:	}
1618:	}
1619:
1620:	$union = TypeCombinator::union(...$unionParts);
1621:	if ($operand instanceof BenevolentUnionType) {
1622:	return TypeUtils::toBenevolentUnion($union)->toNumber();
1623:	}
1624:
1625:	return $union->toNumber();
1626:	}
1627:
1628:	$operand = $operand->toNumber();
1629:	if ($operand instanceof IntegerRangeType) {
1630:	$operandMin = $operand->getMin();
1631:	$operandMax = $operand->getMax();
1632:	} elseif ($operand instanceof ConstantIntegerType) {
1633:	$operandMin = $operand->getValue();
1634:	$operandMax = $operand->getValue();
1635:	} else {
1636:	return $operand;
1637:	}
1638:
1639:	if ($node instanceof BinaryOp\Plus) {
1640:	if ($operand instanceof ConstantIntegerType) {
1641:	/** @var int\|float\|null $min */
1642:	$min = $rangeMin !== null ? $rangeMin + $operand->getValue() : null;
1643:
1644:	/** @var int\|float\|null $max */
1645:	$max = $rangeMax !== null ? $rangeMax + $operand->getValue() : null;
1646:	} else {
1647:	/** @var int\|float\|null $min */
1648:	$min = $rangeMin !== null && $operand->getMin() !== null ? $rangeMin + $operand->getMin() : null;
1649:
1650:	/** @var int\|float\|null $max */
1651:	$max = $rangeMax !== null && $operand->getMax() !== null ? $rangeMax + $operand->getMax() : null;
1652:	}
1653:	} elseif ($node instanceof BinaryOp\Minus) {
1654:	if ($operand instanceof ConstantIntegerType) {
1655:	/** @var int\|float\|null $min */
1656:	$min = $rangeMin !== null ? $rangeMin - $operand->getValue() : null;
1657:
1658:	/** @var int\|float\|null $max */
1659:	$max = $rangeMax !== null ? $rangeMax - $operand->getValue() : null;
1660:	} else {
1661:	if ($rangeMin === $rangeMax && $rangeMin !== null
1662:	&& ($operand->getMin() === null \|\| $operand->getMax() === null)) {
1663:	$min = null;
1664:	$max = $rangeMin;
1665:	} else {
1666:	if ($operand->getMin() === null) {
1667:	$min = null;
1668:	} elseif ($rangeMin !== null) {
1669:	if ($operand->getMax() !== null) {
1670:	/** @var int\|float $min */
1671:	$min = $rangeMin - $operand->getMax();
1672:	} else {
1673:	/** @var int\|float $min */
1674:	$min = $rangeMin - $operand->getMin();
1675:	}
1676:	} else {
1677:	$min = null;
1678:	}
1679:
1680:	if ($operand->getMax() === null) {
1681:	$min = null;
1682:	$max = null;
1683:	} elseif ($rangeMax !== null) {
1684:	if ($rangeMin !== null && $operand->getMin() === null) {
1685:	/** @var int\|float $min */
1686:	$min = $rangeMin - $operand->getMax();
1687:	$max = null;
1688:	} elseif ($operand->getMin() !== null) {
1689:	/** @var int\|float $max */
1690:	$max = $rangeMax - $operand->getMin();
1691:	} else {
1692:	$max = null;
1693:	}
1694:	} else {
1695:	$max = null;
1696:	}
1697:
1698:	if ($min !== null && $max !== null && $min > $max) {
1699:	[$min, $max] = [$max, $min];
1700:	}
1701:	}
1702:	}
1703:	} elseif ($node instanceof Expr\BinaryOp\Mul) {
1704:	$min1 = $rangeMin === 0 \|\| $operandMin === 0 ? 0 : ($rangeMin ?? -INF) * ($operandMin ?? -INF);
1705:	$min2 = $rangeMin === 0 \|\| $operandMax === 0 ? 0 : ($rangeMin ?? -INF) * ($operandMax ?? INF);
1706:	$max1 = $rangeMax === 0 \|\| $operandMin === 0 ? 0 : ($rangeMax ?? INF) * ($operandMin ?? -INF);
1707:	$max2 = $rangeMax === 0 \|\| $operandMax === 0 ? 0 : ($rangeMax ?? INF) * ($operandMax ?? INF);
1708:
1709:	$min = min($min1, $min2, $max1, $max2);
1710:	$max = max($min1, $min2, $max1, $max2);
1711:
1712:	if (!is_finite($min)) {
1713:	$min = null;
1714:	}
1715:	if (!is_finite($max)) {
1716:	$max = null;
1717:	}
1718:	} elseif ($node instanceof Expr\BinaryOp\Div) {
1719:	if ($operand instanceof ConstantIntegerType) {
1720:	$min = $rangeMin !== null && $operand->getValue() !== 0 ? $rangeMin / $operand->getValue() : null;
1721:	$max = $rangeMax !== null && $operand->getValue() !== 0 ? $rangeMax / $operand->getValue() : null;
1722:	} else {
1723:	// Avoid division by zero when looking for the min and the max by using the closest int
1724:	$operandMin = $operandMin !== 0 ? $operandMin : 1;
1725:	$operandMax = $operandMax !== 0 ? $operandMax : -1;
1726:
1727:	if (
1728:	($operandMin < 0 \|\| $operandMin === null)
1729:	&& ($operandMax > 0 \|\| $operandMax === null)
1730:	) {
1731:	$negativeOperand = IntegerRangeType::fromInterval($operandMin, 0);
1732:	assert($negativeOperand instanceof IntegerRangeType);
1733:	$positiveOperand = IntegerRangeType::fromInterval(0, $operandMax);
1734:	assert($positiveOperand instanceof IntegerRangeType);
1735:
1736:	$result = TypeCombinator::union(
1737:	$this->integerRangeMath($range, $node, $negativeOperand),
1738:	$this->integerRangeMath($range, $node, $positiveOperand),
1739:	)->toNumber();
1740:
1741:	if ($result->equals(new UnionType([new IntegerType(), new FloatType()]))) {
1742:	return new BenevolentUnionType([new IntegerType(), new FloatType()]);
1743:	}
1744:
1745:	return $result;
1746:	}
1747:	if (
1748:	($rangeMin < 0 \|\| $rangeMin === null)
1749:	&& ($rangeMax > 0 \|\| $rangeMax === null)
1750:	) {
1751:	$negativeRange = IntegerRangeType::fromInterval($rangeMin, 0);
1752:	assert($negativeRange instanceof IntegerRangeType);
1753:	$positiveRange = IntegerRangeType::fromInterval(0, $rangeMax);
1754:	assert($positiveRange instanceof IntegerRangeType);
1755:
1756:	$result = TypeCombinator::union(
1757:	$this->integerRangeMath($negativeRange, $node, $operand),
1758:	$this->integerRangeMath($positiveRange, $node, $operand),
1759:	)->toNumber();
1760:
1761:	if ($result->equals(new UnionType([new IntegerType(), new FloatType()]))) {
1762:	return new BenevolentUnionType([new IntegerType(), new FloatType()]);
1763:	}
1764:
1765:	return $result;
1766:	}
1767:
1768:	$rangeMinSign = ($rangeMin ?? -INF) <=> 0;
1769:	$rangeMaxSign = ($rangeMax ?? INF) <=> 0;
1770:
1771:	$min1 = $operandMin !== null ? ($rangeMin ?? -INF) / $operandMin : $rangeMinSign * -0.1;
1772:	$min2 = $operandMax !== null ? ($rangeMin ?? -INF) / $operandMax : $rangeMinSign * 0.1;
1773:	$max1 = $operandMin !== null ? ($rangeMax ?? INF) / $operandMin : $rangeMaxSign * -0.1;
1774:	$max2 = $operandMax !== null ? ($rangeMax ?? INF) / $operandMax : $rangeMaxSign * 0.1;
1775:
1776:	$min = min($min1, $min2, $max1, $max2);
1777:	$max = max($min1, $min2, $max1, $max2);
1778:
1779:	if ($min === -INF) {
1780:	$min = null;
1781:	}
1782:	if ($max === INF) {
1783:	$max = null;
1784:	}
1785:	}
1786:
1787:	if ($min !== null && $max !== null && $min > $max) {
1788:	[$min, $max] = [$max, $min];
1789:	}
1790:
1791:	if (is_float($min)) {
1792:	$min = (int) ceil($min);
1793:	}
1794:	if (is_float($max)) {
1795:	$max = (int) floor($max);
1796:	}
1797:
1798:	// invert maximas on division with negative constants
1799:	if ((($range instanceof ConstantIntegerType && $range->getValue() < 0)
1800:	\|\| ($operand instanceof ConstantIntegerType && $operand->getValue() < 0))
1801:	&& ($min === null \|\| $max === null)) {
1802:	[$min, $max] = [$max, $min];
1803:	}
1804:
1805:	if ($min === null && $max === null) {
1806:	return new BenevolentUnionType([new IntegerType(), new FloatType()]);
1807:	}
1808:
1809:	return TypeCombinator::union(IntegerRangeType::fromInterval($min, $max), new FloatType());
1810:	} elseif ($node instanceof Expr\BinaryOp\ShiftLeft) {
1811:	if (!$operand instanceof ConstantIntegerType) {
1812:	return new IntegerType();
1813:	}
1814:	if ($operand->getValue() < 0) {
1815:	return new ErrorType();
1816:	}
1817:	$min = $rangeMin !== null ? intval($rangeMin) << $operand->getValue() : null;
1818:	$max = $rangeMax !== null ? intval($rangeMax) << $operand->getValue() : null;
1819:	} elseif ($node instanceof Expr\BinaryOp\ShiftRight) {
1820:	if (!$operand instanceof ConstantIntegerType) {
1821:	return new IntegerType();
1822:	}
1823:	if ($operand->getValue() < 0) {
1824:	return new ErrorType();
1825:	}
1826:	$min = $rangeMin !== null ? intval($rangeMin) >> $operand->getValue() : null;
1827:	$max = $rangeMax !== null ? intval($rangeMax) >> $operand->getValue() : null;
1828:	} else {
1829:	throw new ShouldNotHappenException();
1830:	}
1831:
1832:	if (is_float($min)) {
1833:	$min = null;
1834:	}
1835:	if (is_float($max)) {
1836:	$max = null;
1837:	}
1838:
1839:	return IntegerRangeType::fromInterval($min, $max);
1840:	}
1841:
1842:	/**
1843:	* @param callable(Expr): Type $getTypeCallback
1844:	*/
1845:	public function getClassConstFetchTypeByReflection(Name\|Expr $class, string $constantName, ?ClassReflection $classReflection, callable $getTypeCallback): Type
1846:	{
1847:	$isObject = false;
1848:	if ($class instanceof Name) {
1849:	$constantClass = (string) $class;
1850:	$constantClassType = new ObjectType($constantClass);
1851:	$namesToResolve = [
1852:	'self',
1853:	'parent',
1854:	];
1855:	if ($classReflection !== null) {
1856:	if ($classReflection->isFinal()) {
1857:	$namesToResolve[] = 'static';
1858:	} elseif (strtolower($constantClass) === 'static') {
1859:	if (strtolower($constantName) === 'class') {
1860:	return new GenericClassStringType(new StaticType($classReflection));
1861:	}
1862:
1863:	$namesToResolve[] = 'static';
1864:	$isObject = true;
1865:	}
1866:	}
1867:	if (in_array(strtolower($constantClass), $namesToResolve, true)) {
1868:	$resolvedName = $this->resolveName($class, $classReflection);
1869:	if (strtolower($resolvedName) === 'parent' && strtolower($constantName) === 'class') {
1870:	return new ClassStringType();
1871:	}
1872:	$constantClassType = $this->resolveTypeByName($class, $classReflection);
1873:	}
1874:
1875:	if (strtolower($constantName) === 'class') {
1876:	return new ConstantStringType($constantClassType->getClassName(), true);
1877:	}
1878:	} elseif ($class instanceof String_ && strtolower($constantName) === 'class') {
1879:	return new ConstantStringType($class->value, true);
1880:	} else {
1881:	$constantClassType = $getTypeCallback($class);
1882:	$isObject = true;
1883:	}
1884:
1885:	if (strtolower($constantName) === 'class') {
1886:	return TypeTraverser::map(
1887:	$constantClassType,
1888:	function (Type $type, callable $traverse): Type {
1889:	if ($type instanceof UnionType \|\| $type instanceof IntersectionType) {
1890:	return $traverse($type);
1891:	}
1892:
1893:	if ($type instanceof NullType) {
1894:	return $type;
1895:	}
1896:
1897:	if ($type instanceof EnumCaseObjectType) {
1898:	return TypeCombinator::intersect(
1899:	new GenericClassStringType(new ObjectType($type->getClassName())),
1900:	new AccessoryLiteralStringType(),
1901:	);
1902:	}
1903:
1904:	$objectClassNames = $type->getObjectClassNames();
1905:	if (count($objectClassNames) > 1) {
1906:	throw new ShouldNotHappenException();
1907:	}
1908:
1909:	if ($type instanceof TemplateType && $objectClassNames === []) {
1910:	return TypeCombinator::intersect(
1911:	new GenericClassStringType($type),
1912:	new AccessoryLiteralStringType(),
1913:	);
1914:	} elseif ($objectClassNames !== [] && $this->getReflectionProvider()->hasClass($objectClassNames[0])) {
1915:	$reflection = $this->getReflectionProvider()->getClass($objectClassNames[0]);
1916:	if ($reflection->isFinalByKeyword()) {
1917:	return new ConstantStringType($reflection->getName(), true);
1918:	}
1919:
1920:	return TypeCombinator::intersect(
1921:	new GenericClassStringType($type),
1922:	new AccessoryLiteralStringType(),
1923:	);
1924:	} elseif ($type->isObject()->yes()) {
1925:	return TypeCombinator::intersect(
1926:	new ClassStringType(),
1927:	new AccessoryLiteralStringType(),
1928:	);
1929:	}
1930:
1931:	return new ErrorType();
1932:	},
1933:	);
1934:	}
1935:
1936:	if ($constantClassType->isClassString()->yes()) {
1937:	if ($constantClassType->isConstantScalarValue()->yes()) {
1938:	$isObject = false;
1939:	}
1940:	$constantClassType = $constantClassType->getClassStringObjectType();
1941:	}
1942:
1943:	$types = [];
1944:	foreach ($constantClassType->getObjectClassNames() as $referencedClass) {
1945:	if (!$this->getReflectionProvider()->hasClass($referencedClass)) {
1946:	continue;
1947:	}
1948:
1949:	$constantClassReflection = $this->getReflectionProvider()->getClass($referencedClass);
1950:	if (!$constantClassReflection->hasConstant($constantName)) {
1951:	continue;
1952:	}
1953:
1954:	if ($constantClassReflection->isEnum() && $constantClassReflection->hasEnumCase($constantName)) {
1955:	$types[] = new EnumCaseObjectType($constantClassReflection->getName(), $constantName);
1956:	continue;
1957:	}
1958:
1959:	$resolvingName = sprintf('%s::%s', $constantClassReflection->getName(), $constantName);
1960:	if (array_key_exists($resolvingName, $this->currentlyResolvingClassConstant)) {
1961:	$types[] = new MixedType();
1962:	continue;
1963:	}
1964:
1965:	$this->currentlyResolvingClassConstant[$resolvingName] = true;
1966:
1967:	if (!$isObject) {
1968:	$reflectionConstant = $constantClassReflection->getNativeReflection()->getReflectionConstant($constantName);
1969:	if ($reflectionConstant === false) {
1970:	unset($this->currentlyResolvingClassConstant[$resolvingName]);
1971:	continue;
1972:	}
1973:	$reflectionConstantDeclaringClass = $reflectionConstant->getDeclaringClass();
1974:	$constantType = $this->getType($reflectionConstant->getValueExpression(), InitializerExprContext::fromClass($reflectionConstantDeclaringClass->getName(), $reflectionConstantDeclaringClass->getFileName() ?: null));
1975:	$nativeType = null;
1976:	if ($reflectionConstant->getType() !== null) {
1977:	$nativeType = TypehintHelper::decideTypeFromReflection($reflectionConstant->getType(), null, $constantClassReflection);
1978:	}
1979:	$types[] = $this->constantResolver->resolveClassConstantType(
1980:	$constantClassReflection->getName(),
1981:	$constantName,
1982:	$constantType,
1983:	$nativeType,
1984:	);
1985:	unset($this->currentlyResolvingClassConstant[$resolvingName]);
1986:	continue;
1987:	}
1988:
1989:	$constantReflection = $constantClassReflection->getConstant($constantName);
1990:	if (
1991:	!$constantClassReflection->isFinal()
1992:	&& !$constantReflection->isFinal()
1993:	&& !$constantReflection->hasPhpDocType()
1994:	&& !$constantReflection->hasNativeType()
1995:	) {
1996:	unset($this->currentlyResolvingClassConstant[$resolvingName]);
1997:	return new MixedType();
1998:	}
1999:
2000:	if (!$constantClassReflection->isFinal()) {
2001:	$constantType = $constantReflection->getValueType();
2002:	} else {
2003:	$constantType = $this->getType($constantReflection->getValueExpr(), InitializerExprContext::fromClassReflection($constantReflection->getDeclaringClass()));
2004:	}
2005:
2006:	$nativeType = $constantReflection->getNativeType();
2007:	$constantType = $this->constantResolver->resolveClassConstantType(
2008:	$constantClassReflection->getName(),
2009:	$constantName,
2010:	$constantType,
2011:	$nativeType,
2012:	);
2013:	unset($this->currentlyResolvingClassConstant[$resolvingName]);
2014:	$types[] = $constantType;
2015:	}
2016:
2017:	if (count($types) > 0) {
2018:	return TypeCombinator::union(...$types);
2019:	}
2020:
2021:	if (!$constantClassType->hasConstant($constantName)->yes()) {
2022:	return new ErrorType();
2023:	}
2024:
2025:	return $constantClassType->getConstant($constantName)->getValueType();
2026:	}
2027:
2028:	/**
2029:	* @param callable(Expr): Type $getTypeCallback
2030:	*/
2031:	public function getClassConstFetchType(Name\|Expr $class, string $constantName, ?string $className, callable $getTypeCallback): Type
2032:	{
2033:	$classReflection = null;
2034:	if ($className !== null && $this->getReflectionProvider()->hasClass($className)) {
2035:	$classReflection = $this->getReflectionProvider()->getClass($className);
2036:	}
2037:
2038:	return $this->getClassConstFetchTypeByReflection($class, $constantName, $classReflection, $getTypeCallback);
2039:	}
2040:
2041:	/**
2042:	* @param callable(Expr): Type $getTypeCallback
2043:	*/
2044:	public function getUnaryMinusType(Expr $expr, callable $getTypeCallback): Type
2045:	{
2046:	$type = $getTypeCallback($expr)->toNumber();
2047:	$scalarValues = $type->getConstantScalarValues();
2048:
2049:	if (count($scalarValues) > 0) {
2050:	$newTypes = [];
2051:	foreach ($scalarValues as $scalarValue) {
2052:	if (is_int($scalarValue)) {
2053:	/** @var int\|float $newValue */
2054:	$newValue = -$scalarValue;
2055:	if (!is_int($newValue)) {
2056:	return $type;
2057:	}
2058:	$newTypes[] = new ConstantIntegerType($newValue);
2059:	} elseif (is_float($scalarValue)) {
2060:	$newTypes[] = new ConstantFloatType(-$scalarValue);
2061:	}
2062:	}
2063:
2064:	return TypeCombinator::union(...$newTypes);
2065:	}
2066:
2067:	if ($type instanceof IntegerRangeType) {
2068:	return $getTypeCallback(new Expr\BinaryOp\Mul($expr, new Int_(-1)));
2069:	}
2070:
2071:	return $type;
2072:	}
2073:
2074:	/**
2075:	* @param callable(Expr): Type $getTypeCallback
2076:	*/
2077:	public function getBitwiseNotType(Expr $expr, callable $getTypeCallback): Type
2078:	{
2079:	$exprType = $getTypeCallback($expr);
2080:	return TypeTraverser::map($exprType, static function (Type $type, callable $traverse): Type {
2081:	if ($type instanceof UnionType \|\| $type instanceof IntersectionType) {
2082:	return $traverse($type);
2083:	}
2084:	if ($type instanceof ConstantStringType) {
2085:	return new ConstantStringType(~$type->getValue());
2086:	}
2087:	if ($type->isString()->yes()) {
2088:	$accessories = [
2089:	new StringType(),
2090:	];
2091:	if ($type->isNonEmptyString()->yes()) {
2092:	$accessories[] = new AccessoryNonEmptyStringType();
2093:	}
2094:	// it is not useful to apply numeric and literal strings here.
2095:	// numeric string isn't certainly kept numeric: 3v4l.org/JERDB
2096:
2097:	return TypeCombinator::intersect(...$accessories);
2098:	}
2099:	if ($type->isInteger()->yes() \|\| $type->isFloat()->yes()) {
2100:	return new IntegerType(); //no const types here, result depends on PHP_INT_SIZE
2101:	}
2102:	return new ErrorType();
2103:	});
2104:	}
2105:
2106:	private function resolveName(Name $name, ?ClassReflection $classReflection): string
2107:	{
2108:	$originalClass = (string) $name;
2109:	if ($classReflection !== null) {
2110:	$lowerClass = strtolower($originalClass);
2111:
2112:	if (in_array($lowerClass, [
2113:	'self',
2114:	'static',
2115:	], true)) {
2116:	return $classReflection->getName();
2117:	} elseif ($lowerClass === 'parent') {
2118:	if ($classReflection->getParentClass() !== null) {
2119:	return $classReflection->getParentClass()->getName();
2120:	}
2121:	}
2122:	}
2123:
2124:	return $originalClass;
2125:	}
2126:
2127:	private function resolveTypeByName(Name $name, ?ClassReflection $classReflection): TypeWithClassName
2128:	{
2129:	if ($name->toLowerString() === 'static' && $classReflection !== null) {
2130:	return new StaticType($classReflection);
2131:	}
2132:
2133:	$originalClass = $this->resolveName($name, $classReflection);
2134:	if ($classReflection !== null) {
2135:	$thisType = new ThisType($classReflection);
2136:	$ancestor = $thisType->getAncestorWithClassName($originalClass);
2137:	if ($ancestor !== null) {
2138:	return $ancestor;
2139:	}
2140:	}
2141:
2142:	return new ObjectType($originalClass);
2143:	}
2144:
2145:	/**
2146:	* @param mixed $value
2147:	*/
2148:	private function getTypeFromValue($value): Type
2149:	{
2150:	return ConstantTypeHelper::getTypeFromValue($value);
2151:	}
2152:
2153:	private function getReflectionProvider(): ReflectionProvider
2154:	{
2155:	return $this->reflectionProviderProvider->getReflectionProvider();
2156:	}
2157:
2158:	private function getNeverType(Type $leftType, Type $rightType): Type
2159:	{
2160:	// make sure we don't lose the explicit flag in the process
2161:	if ($leftType instanceof NeverType && $leftType->isExplicit()) {
2162:	return $leftType;
2163:	}
2164:	if ($rightType instanceof NeverType && $rightType->isExplicit()) {
2165:	return $rightType;
2166:	}
2167:	return new NeverType();
2168:	}
2169:
2170:	}
2171:

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