File src/Analyser/TypeSpecifier.php

1:	<?php declare(strict_types = 1);
2:
3:	namespace PHPStan\Analyser;
4:
5:	use Countable;
6:	use PhpParser\Node;
7:	use PhpParser\Node\Expr;
8:	use PhpParser\Node\Expr\ArrayDimFetch;
9:	use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
10:	use PhpParser\Node\Expr\BinaryOp\BooleanOr;
11:	use PhpParser\Node\Expr\BinaryOp\LogicalAnd;
12:	use PhpParser\Node\Expr\BinaryOp\LogicalOr;
13:	use PhpParser\Node\Expr\ClassConstFetch;
14:	use PhpParser\Node\Expr\ConstFetch;
15:	use PhpParser\Node\Expr\FuncCall;
16:	use PhpParser\Node\Expr\Instanceof_;
17:	use PhpParser\Node\Expr\MethodCall;
18:	use PhpParser\Node\Expr\PropertyFetch;
19:	use PhpParser\Node\Expr\StaticCall;
20:	use PhpParser\Node\Expr\StaticPropertyFetch;
21:	use PhpParser\Node\Name;
22:	use PHPStan\DependencyInjection\AutowiredService;
23:	use PHPStan\Node\Expr\AlwaysRememberedExpr;
24:	use PHPStan\Node\IssetExpr;
25:	use PHPStan\Node\Printer\ExprPrinter;
26:	use PHPStan\Php\PhpVersion;
27:	use PHPStan\Reflection\Assertions;
28:	use PHPStan\Reflection\ExtendedParametersAcceptor;
29:	use PHPStan\Reflection\ParametersAcceptor;
30:	use PHPStan\Reflection\ParametersAcceptorSelector;
31:	use PHPStan\Reflection\ReflectionProvider;
32:	use PHPStan\Reflection\ResolvedFunctionVariant;
33:	use PHPStan\Rules\Arrays\AllowedArrayKeysTypes;
34:	use PHPStan\ShouldNotHappenException;
35:	use PHPStan\TrinaryLogic;
36:	use PHPStan\Type\Accessory\AccessoryArrayListType;
37:	use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
38:	use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
39:	use PHPStan\Type\Accessory\HasOffsetType;
40:	use PHPStan\Type\Accessory\HasPropertyType;
41:	use PHPStan\Type\Accessory\NonEmptyArrayType;
42:	use PHPStan\Type\ArrayType;
43:	use PHPStan\Type\BooleanType;
44:	use PHPStan\Type\ConditionalTypeForParameter;
45:	use PHPStan\Type\Constant\ConstantArrayType;
46:	use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
47:	use PHPStan\Type\Constant\ConstantBooleanType;
48:	use PHPStan\Type\Constant\ConstantFloatType;
49:	use PHPStan\Type\Constant\ConstantIntegerType;
50:	use PHPStan\Type\Constant\ConstantStringType;
51:	use PHPStan\Type\ConstantScalarType;
52:	use PHPStan\Type\FloatType;
53:	use PHPStan\Type\FunctionTypeSpecifyingExtension;
54:	use PHPStan\Type\Generic\GenericClassStringType;
55:	use PHPStan\Type\Generic\TemplateType;
56:	use PHPStan\Type\Generic\TemplateTypeHelper;
57:	use PHPStan\Type\Generic\TemplateTypeVariance;
58:	use PHPStan\Type\Generic\TemplateTypeVarianceMap;
59:	use PHPStan\Type\IntegerRangeType;
60:	use PHPStan\Type\IntegerType;
61:	use PHPStan\Type\IntersectionType;
62:	use PHPStan\Type\MethodTypeSpecifyingExtension;
63:	use PHPStan\Type\MixedType;
64:	use PHPStan\Type\NeverType;
65:	use PHPStan\Type\NonexistentParentClassType;
66:	use PHPStan\Type\NullType;
67:	use PHPStan\Type\ObjectType;
68:	use PHPStan\Type\ObjectWithoutClassType;
69:	use PHPStan\Type\ResourceType;
70:	use PHPStan\Type\StaticMethodTypeSpecifyingExtension;
71:	use PHPStan\Type\StaticType;
72:	use PHPStan\Type\StaticTypeFactory;
73:	use PHPStan\Type\StringType;
74:	use PHPStan\Type\Type;
75:	use PHPStan\Type\TypeCombinator;
76:	use PHPStan\Type\TypeTraverser;
77:	use PHPStan\Type\UnionType;
78:	use function array_key_exists;
79:	use function array_map;
80:	use function array_merge;
81:	use function array_reverse;
82:	use function array_shift;
83:	use function count;
84:	use function in_array;
85:	use function is_string;
86:	use function strtolower;
87:	use function substr;
88:	use const COUNT_NORMAL;
89:
90:	#[AutowiredService(name: 'typeSpecifier', factory: '@typeSpecifierFactory::create')]
91:	final class TypeSpecifier
92:	{
93:
94:	/** @var MethodTypeSpecifyingExtension[][]\|null */
95:	private ?array $methodTypeSpecifyingExtensionsByClass = null;
96:
97:	/** @var StaticMethodTypeSpecifyingExtension[][]\|null */
98:	private ?array $staticMethodTypeSpecifyingExtensionsByClass = null;
99:
100:	/**
101:	* @param FunctionTypeSpecifyingExtension[] $functionTypeSpecifyingExtensions
102:	* @param MethodTypeSpecifyingExtension[] $methodTypeSpecifyingExtensions
103:	* @param StaticMethodTypeSpecifyingExtension[] $staticMethodTypeSpecifyingExtensions
104:	*/
105:	public function __construct(
106:	private ExprPrinter $exprPrinter,
107:	private ReflectionProvider $reflectionProvider,
108:	private PhpVersion $phpVersion,
109:	private array $functionTypeSpecifyingExtensions,
110:	private array $methodTypeSpecifyingExtensions,
111:	private array $staticMethodTypeSpecifyingExtensions,
112:	private bool $rememberPossiblyImpureFunctionValues,
113:	)
114:	{
115:	foreach (array_merge($functionTypeSpecifyingExtensions, $methodTypeSpecifyingExtensions, $staticMethodTypeSpecifyingExtensions) as $extension) {
116:	if (!($extension instanceof TypeSpecifierAwareExtension)) {
117:	continue;
118:	}
119:
120:	$extension->setTypeSpecifier($this);
121:	}
122:	}
123:
124:	/** @api */
125:	public function specifyTypesInCondition(
126:	Scope $scope,
127:	Expr $expr,
128:	TypeSpecifierContext $context,
129:	): SpecifiedTypes
130:	{
131:	if ($expr instanceof Expr\CallLike && $expr->isFirstClassCallable()) {
132:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
133:	}
134:
135:	if ($expr instanceof Instanceof_) {
136:	$exprNode = $expr->expr;
137:	if ($expr->class instanceof Name) {
138:	$className = (string) $expr->class;
139:	$lowercasedClassName = strtolower($className);
140:	if ($lowercasedClassName === 'self' && $scope->isInClass()) {
141:	$type = new ObjectType($scope->getClassReflection()->getName());
142:	} elseif ($lowercasedClassName === 'static' && $scope->isInClass()) {
143:	$type = new StaticType($scope->getClassReflection());
144:	} elseif ($lowercasedClassName === 'parent') {
145:	if (
146:	$scope->isInClass()
147:	&& $scope->getClassReflection()->getParentClass() !== null
148:	) {
149:	$type = new ObjectType($scope->getClassReflection()->getParentClass()->getName());
150:	} else {
151:	$type = new NonexistentParentClassType();
152:	}
153:	} else {
154:	$type = new ObjectType($className);
155:	}
156:	return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
157:	}
158:
159:	$classType = $scope->getType($expr->class);
160:	$uncertainty = false;
161:	$type = TypeTraverser::map($classType, static function (Type $type, callable $traverse) use (&$uncertainty): Type {
162:	if ($type instanceof UnionType \|\| $type instanceof IntersectionType) {
163:	return $traverse($type);
164:	}
165:	if ($type->getObjectClassNames() !== []) {
166:	$uncertainty = true;
167:	return $type;
168:	}
169:	if ($type instanceof GenericClassStringType) {
170:	$uncertainty = true;
171:	return $type->getGenericType();
172:	}
173:	if ($type instanceof ConstantStringType) {
174:	return new ObjectType($type->getValue());
175:	}
176:	return new MixedType();
177:	});
178:
179:	if (!$type->isSuperTypeOf(new MixedType())->yes()) {
180:	if ($context->true()) {
181:	$type = TypeCombinator::intersect(
182:	$type,
183:	new ObjectWithoutClassType(),
184:	);
185:	return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
186:	} elseif ($context->false() && !$uncertainty) {
187:	$exprType = $scope->getType($expr->expr);
188:	if (!$type->isSuperTypeOf($exprType)->yes()) {
189:	return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
190:	}
191:	}
192:	}
193:	if ($context->true()) {
194:	return $this->create($exprNode, new ObjectWithoutClassType(), $context, $scope)->setRootExpr($exprNode);
195:	}
196:	} elseif ($expr instanceof Node\Expr\BinaryOp\Identical) {
197:	return $this->resolveIdentical($expr, $scope, $context);
198:
199:	} elseif ($expr instanceof Node\Expr\BinaryOp\NotIdentical) {
200:	return $this->specifyTypesInCondition(
201:	$scope,
202:	new Node\Expr\BooleanNot(new Node\Expr\BinaryOp\Identical($expr->left, $expr->right)),
203:	$context,
204:	)->setRootExpr($expr);
205:	} elseif ($expr instanceof Expr\Cast\Bool_) {
206:	return $this->specifyTypesInCondition(
207:	$scope,
208:	new Node\Expr\BinaryOp\Equal($expr->expr, new ConstFetch(new Name\FullyQualified('true'))),
209:	$context,
210:	)->setRootExpr($expr);
211:	} elseif ($expr instanceof Expr\Cast\String_) {
212:	return $this->specifyTypesInCondition(
213:	$scope,
214:	new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\String_('')),
215:	$context,
216:	)->setRootExpr($expr);
217:	} elseif ($expr instanceof Expr\Cast\Int_) {
218:	return $this->specifyTypesInCondition(
219:	$scope,
220:	new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\LNumber(0)),
221:	$context,
222:	)->setRootExpr($expr);
223:	} elseif ($expr instanceof Expr\Cast\Double) {
224:	return $this->specifyTypesInCondition(
225:	$scope,
226:	new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\DNumber(0.0)),
227:	$context,
228:	)->setRootExpr($expr);
229:	} elseif ($expr instanceof Node\Expr\BinaryOp\Equal) {
230:	return $this->resolveEqual($expr, $scope, $context);
231:	} elseif ($expr instanceof Node\Expr\BinaryOp\NotEqual) {
232:	return $this->specifyTypesInCondition(
233:	$scope,
234:	new Node\Expr\BooleanNot(new Node\Expr\BinaryOp\Equal($expr->left, $expr->right)),
235:	$context,
236:	)->setRootExpr($expr);
237:
238:	} elseif ($expr instanceof Node\Expr\BinaryOp\Smaller \|\| $expr instanceof Node\Expr\BinaryOp\SmallerOrEqual) {
239:
240:	if (
241:	$expr->left instanceof FuncCall
242:	&& count($expr->left->getArgs()) >= 1
243:	&& $expr->left->name instanceof Name
244:	&& in_array(strtolower((string) $expr->left->name), ['count', 'sizeof', 'strlen', 'mb_strlen', 'preg_match'], true)
245:	&& (
246:	!$expr->right instanceof FuncCall
247:	\|\| !$expr->right->name instanceof Name
248:	\|\| !in_array(strtolower((string) $expr->right->name), ['count', 'sizeof', 'strlen', 'mb_strlen', 'preg_match'], true)
249:	)
250:	) {
251:	$inverseOperator = $expr instanceof Node\Expr\BinaryOp\Smaller
252:	? new Node\Expr\BinaryOp\SmallerOrEqual($expr->right, $expr->left)
253:	: new Node\Expr\BinaryOp\Smaller($expr->right, $expr->left);
254:
255:	return $this->specifyTypesInCondition(
256:	$scope,
257:	new Node\Expr\BooleanNot($inverseOperator),
258:	$context,
259:	)->setRootExpr($expr);
260:	}
261:
262:	$orEqual = $expr instanceof Node\Expr\BinaryOp\SmallerOrEqual;
263:	$offset = $orEqual ? 0 : 1;
264:	$leftType = $scope->getType($expr->left);
265:	$result = (new SpecifiedTypes([], []))->setRootExpr($expr);
266:
267:	if (
268:	!$context->null()
269:	&& $expr->right instanceof FuncCall
270:	&& count($expr->right->getArgs()) >= 1
271:	&& $expr->right->name instanceof Name
272:	&& in_array(strtolower((string) $expr->right->name), ['count', 'sizeof'], true)
273:	&& $leftType->isInteger()->yes()
274:	) {
275:	$argType = $scope->getType($expr->right->getArgs()[0]->value);
276:
277:	if ($leftType instanceof ConstantIntegerType) {
278:	if ($orEqual) {
279:	$sizeType = IntegerRangeType::createAllGreaterThanOrEqualTo($leftType->getValue());
280:	} else {
281:	$sizeType = IntegerRangeType::createAllGreaterThan($leftType->getValue());
282:	}
283:	} elseif ($leftType instanceof IntegerRangeType) {
284:	$sizeType = $leftType->shift($offset);
285:	} else {
286:	$sizeType = $leftType;
287:	}
288:
289:	$specifiedTypes = $this->specifyTypesForCountFuncCall($expr->right, $argType, $sizeType, $context, $scope, $expr);
290:	if ($specifiedTypes !== null) {
291:	$result = $result->unionWith($specifiedTypes);
292:	}
293:
294:	if (
295:	$context->true() && (IntegerRangeType::createAllGreaterThanOrEqualTo(1 - $offset)->isSuperTypeOf($leftType)->yes())
296:	\|\| ($context->false() && (new ConstantIntegerType(1 - $offset))->isSuperTypeOf($leftType)->yes())
297:	) {
298:	if ($context->truthy() && $argType->isArray()->maybe()) {
299:	$countables = [];
300:	if ($argType instanceof UnionType) {
301:	$countableInterface = new ObjectType(Countable::class);
302:	foreach ($argType->getTypes() as $innerType) {
303:	if ($innerType->isArray()->yes()) {
304:	$innerType = TypeCombinator::intersect(new NonEmptyArrayType(), $innerType);
305:	$countables[] = $innerType;
306:	}
307:
308:	if (!$countableInterface->isSuperTypeOf($innerType)->yes()) {
309:	continue;
310:	}
311:
312:	$countables[] = $innerType;
313:	}
314:	}
315:
316:	if (count($countables) > 0) {
317:	$countableType = TypeCombinator::union(...$countables);
318:
319:	return $this->create($expr->right->getArgs()[0]->value, $countableType, $context, $scope)->setRootExpr($expr);
320:	}
321:	}
322:
323:	if ($argType->isArray()->yes()) {
324:	$newType = new NonEmptyArrayType();
325:	if ($context->true() && $argType->isList()->yes()) {
326:	$newType = TypeCombinator::intersect($newType, new AccessoryArrayListType());
327:	}
328:
329:	$result = $result->unionWith(
330:	$this->create($expr->right->getArgs()[0]->value, $newType, $context, $scope)->setRootExpr($expr),
331:	);
332:	}
333:	}
334:	}
335:
336:	if (
337:	!$context->null()
338:	&& $expr->right instanceof FuncCall
339:	&& count($expr->right->getArgs()) >= 3
340:	&& $expr->right->name instanceof Name
341:	&& in_array(strtolower((string) $expr->right->name), ['preg_match'], true)
342:	&& IntegerRangeType::fromInterval(0, null)->isSuperTypeOf($leftType)->yes()
343:	) {
344:	return $this->specifyTypesInCondition(
345:	$scope,
346:	new Expr\BinaryOp\NotIdentical($expr->right, new ConstFetch(new Name('false'))),
347:	$context,
348:	)->setRootExpr($expr);
349:	}
350:
351:	if (
352:	!$context->null()
353:	&& $expr->right instanceof FuncCall
354:	&& count($expr->right->getArgs()) === 1
355:	&& $expr->right->name instanceof Name
356:	&& in_array(strtolower((string) $expr->right->name), ['strlen', 'mb_strlen'], true)
357:	&& $leftType->isInteger()->yes()
358:	) {
359:	if (
360:	$context->true() && (IntegerRangeType::createAllGreaterThanOrEqualTo(1 - $offset)->isSuperTypeOf($leftType)->yes())
361:	\|\| ($context->false() && (new ConstantIntegerType(1 - $offset))->isSuperTypeOf($leftType)->yes())
362:	) {
363:	$argType = $scope->getType($expr->right->getArgs()[0]->value);
364:	if ($argType->isString()->yes()) {
365:	$accessory = new AccessoryNonEmptyStringType();
366:
367:	if (IntegerRangeType::createAllGreaterThanOrEqualTo(2 - $offset)->isSuperTypeOf($leftType)->yes()) {
368:	$accessory = new AccessoryNonFalsyStringType();
369:	}
370:
371:	$result = $result->unionWith($this->create($expr->right->getArgs()[0]->value, $accessory, $context, $scope)->setRootExpr($expr));
372:	}
373:	}
374:	}
375:
376:	if ($leftType instanceof ConstantIntegerType) {
377:	if ($expr->right instanceof Expr\PostInc) {
378:	$result = $result->unionWith($this->createRangeTypes(
379:	$expr,
380:	$expr->right->var,
381:	IntegerRangeType::fromInterval($leftType->getValue(), null, $offset + 1),
382:	$context,
383:	));
384:	} elseif ($expr->right instanceof Expr\PostDec) {
385:	$result = $result->unionWith($this->createRangeTypes(
386:	$expr,
387:	$expr->right->var,
388:	IntegerRangeType::fromInterval($leftType->getValue(), null, $offset - 1),
389:	$context,
390:	));
391:	} elseif ($expr->right instanceof Expr\PreInc \|\| $expr->right instanceof Expr\PreDec) {
392:	$result = $result->unionWith($this->createRangeTypes(
393:	$expr,
394:	$expr->right->var,
395:	IntegerRangeType::fromInterval($leftType->getValue(), null, $offset),
396:	$context,
397:	));
398:	}
399:	}
400:
401:	$rightType = $scope->getType($expr->right);
402:	if ($rightType instanceof ConstantIntegerType) {
403:	if ($expr->left instanceof Expr\PostInc) {
404:	$result = $result->unionWith($this->createRangeTypes(
405:	$expr,
406:	$expr->left->var,
407:	IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset + 1),
408:	$context,
409:	));
410:	} elseif ($expr->left instanceof Expr\PostDec) {
411:	$result = $result->unionWith($this->createRangeTypes(
412:	$expr,
413:	$expr->left->var,
414:	IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset - 1),
415:	$context,
416:	));
417:	} elseif ($expr->left instanceof Expr\PreInc \|\| $expr->left instanceof Expr\PreDec) {
418:	$result = $result->unionWith($this->createRangeTypes(
419:	$expr,
420:	$expr->left->var,
421:	IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset),
422:	$context,
423:	));
424:	}
425:	}
426:
427:	if ($context->true()) {
428:	if (!$expr->left instanceof Node\Scalar) {
429:	$result = $result->unionWith(
430:	$this->create(
431:	$expr->left,
432:	$orEqual ? $rightType->getSmallerOrEqualType($this->phpVersion) : $rightType->getSmallerType($this->phpVersion),
433:	TypeSpecifierContext::createTruthy(),
434:	$scope,
435:	)->setRootExpr($expr),
436:	);
437:	}
438:	if (!$expr->right instanceof Node\Scalar) {
439:	$result = $result->unionWith(
440:	$this->create(
441:	$expr->right,
442:	$orEqual ? $leftType->getGreaterOrEqualType($this->phpVersion) : $leftType->getGreaterType($this->phpVersion),
443:	TypeSpecifierContext::createTruthy(),
444:	$scope,
445:	)->setRootExpr($expr),
446:	);
447:	}
448:	} elseif ($context->false()) {
449:	if (!$expr->left instanceof Node\Scalar) {
450:	$result = $result->unionWith(
451:	$this->create(
452:	$expr->left,
453:	$orEqual ? $rightType->getGreaterType($this->phpVersion) : $rightType->getGreaterOrEqualType($this->phpVersion),
454:	TypeSpecifierContext::createTruthy(),
455:	$scope,
456:	)->setRootExpr($expr),
457:	);
458:	}
459:	if (!$expr->right instanceof Node\Scalar) {
460:	$result = $result->unionWith(
461:	$this->create(
462:	$expr->right,
463:	$orEqual ? $leftType->getSmallerType($this->phpVersion) : $leftType->getSmallerOrEqualType($this->phpVersion),
464:	TypeSpecifierContext::createTruthy(),
465:	$scope,
466:	)->setRootExpr($expr),
467:	);
468:	}
469:	}
470:
471:	return $result;
472:
473:	} elseif ($expr instanceof Node\Expr\BinaryOp\Greater) {
474:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Smaller($expr->right, $expr->left), $context)->setRootExpr($expr);
475:
476:	} elseif ($expr instanceof Node\Expr\BinaryOp\GreaterOrEqual) {
477:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\SmallerOrEqual($expr->right, $expr->left), $context)->setRootExpr($expr);
478:
479:	} elseif ($expr instanceof FuncCall && $expr->name instanceof Name) {
480:	if ($this->reflectionProvider->hasFunction($expr->name, $scope)) {
481:	// lazy create parametersAcceptor, as creation can be expensive
482:	$parametersAcceptor = null;
483:
484:	$functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
485:	if (count($expr->getArgs()) > 0) {
486:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $functionReflection->getVariants(), $functionReflection->getNamedArgumentsVariants());
487:	$expr = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $expr) ?? $expr;
488:	}
489:
490:	foreach ($this->getFunctionTypeSpecifyingExtensions() as $extension) {
491:	if (!$extension->isFunctionSupported($functionReflection, $expr, $context)) {
492:	continue;
493:	}
494:
495:	return $extension->specifyTypes($functionReflection, $expr, $scope, $context);
496:	}
497:
498:	if (count($expr->getArgs()) > 0) {
499:	if ($parametersAcceptor === null) {
500:	throw new ShouldNotHappenException();
501:	}
502:
503:	$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
504:	if ($specifiedTypes !== null) {
505:	return $specifiedTypes;
506:	}
507:	}
508:
509:	$assertions = $functionReflection->getAsserts();
510:	if ($assertions->getAll() !== []) {
511:	$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $functionReflection->getVariants(), $functionReflection->getNamedArgumentsVariants());
512:
513:	$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
514:	$type,
515:	$parametersAcceptor->getResolvedTemplateTypeMap(),
516:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
517:	TemplateTypeVariance::createInvariant(),
518:	));
519:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
520:	if ($specifiedTypes !== null) {
521:	return $specifiedTypes;
522:	}
523:	}
524:	}
525:
526:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
527:	} elseif ($expr instanceof MethodCall && $expr->name instanceof Node\Identifier) {
528:	$methodCalledOnType = $scope->getType($expr->var);
529:	$methodReflection = $scope->getMethodReflection($methodCalledOnType, $expr->name->name);
530:	if ($methodReflection !== null) {
531:	// lazy create parametersAcceptor, as creation can be expensive
532:	$parametersAcceptor = null;
533:
534:	if (count($expr->getArgs()) > 0) {
535:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
536:	$expr = ArgumentsNormalizer::reorderMethodArguments($parametersAcceptor, $expr) ?? $expr;
537:	}
538:
539:	$referencedClasses = $methodCalledOnType->getObjectClassNames();
540:	if (
541:	count($referencedClasses) === 1
542:	&& $this->reflectionProvider->hasClass($referencedClasses[0])
543:	) {
544:	$methodClassReflection = $this->reflectionProvider->getClass($referencedClasses[0]);
545:	foreach ($this->getMethodTypeSpecifyingExtensionsForClass($methodClassReflection->getName()) as $extension) {
546:	if (!$extension->isMethodSupported($methodReflection, $expr, $context)) {
547:	continue;
548:	}
549:
550:	return $extension->specifyTypes($methodReflection, $expr, $scope, $context);
551:	}
552:	}
553:
554:	if (count($expr->getArgs()) > 0) {
555:	if ($parametersAcceptor === null) {
556:	throw new ShouldNotHappenException();
557:	}
558:
559:	$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
560:	if ($specifiedTypes !== null) {
561:	return $specifiedTypes;
562:	}
563:	}
564:
565:	$assertions = $methodReflection->getAsserts();
566:	if ($assertions->getAll() !== []) {
567:	$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
568:
569:	$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
570:	$type,
571:	$parametersAcceptor->getResolvedTemplateTypeMap(),
572:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
573:	TemplateTypeVariance::createInvariant(),
574:	));
575:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
576:	if ($specifiedTypes !== null) {
577:	return $specifiedTypes;
578:	}
579:	}
580:	}
581:
582:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
583:	} elseif ($expr instanceof StaticCall && $expr->name instanceof Node\Identifier) {
584:	if ($expr->class instanceof Name) {
585:	$calleeType = $scope->resolveTypeByName($expr->class);
586:	} else {
587:	$calleeType = $scope->getType($expr->class);
588:	}
589:
590:	$staticMethodReflection = $scope->getMethodReflection($calleeType, $expr->name->name);
591:	if ($staticMethodReflection !== null) {
592:	// lazy create parametersAcceptor, as creation can be expensive
593:	$parametersAcceptor = null;
594:
595:	if (count($expr->getArgs()) > 0) {
596:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $staticMethodReflection->getVariants(), $staticMethodReflection->getNamedArgumentsVariants());
597:	$expr = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $expr) ?? $expr;
598:	}
599:
600:	$referencedClasses = $calleeType->getObjectClassNames();
601:	if (
602:	count($referencedClasses) === 1
603:	&& $this->reflectionProvider->hasClass($referencedClasses[0])
604:	) {
605:	$staticMethodClassReflection = $this->reflectionProvider->getClass($referencedClasses[0]);
606:	foreach ($this->getStaticMethodTypeSpecifyingExtensionsForClass($staticMethodClassReflection->getName()) as $extension) {
607:	if (!$extension->isStaticMethodSupported($staticMethodReflection, $expr, $context)) {
608:	continue;
609:	}
610:
611:	return $extension->specifyTypes($staticMethodReflection, $expr, $scope, $context);
612:	}
613:	}
614:
615:	if (count($expr->getArgs()) > 0) {
616:	if ($parametersAcceptor === null) {
617:	throw new ShouldNotHappenException();
618:	}
619:
620:	$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
621:	if ($specifiedTypes !== null) {
622:	return $specifiedTypes;
623:	}
624:	}
625:
626:	$assertions = $staticMethodReflection->getAsserts();
627:	if ($assertions->getAll() !== []) {
628:	$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $staticMethodReflection->getVariants(), $staticMethodReflection->getNamedArgumentsVariants());
629:
630:	$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
631:	$type,
632:	$parametersAcceptor->getResolvedTemplateTypeMap(),
633:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
634:	TemplateTypeVariance::createInvariant(),
635:	));
636:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
637:	if ($specifiedTypes !== null) {
638:	return $specifiedTypes;
639:	}
640:	}
641:	}
642:
643:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
644:	} elseif ($expr instanceof BooleanAnd \|\| $expr instanceof LogicalAnd) {
645:	if (!$scope instanceof MutatingScope) {
646:	throw new ShouldNotHappenException();
647:	}
648:	$leftTypes = $this->specifyTypesInCondition($scope, $expr->left, $context)->setRootExpr($expr);
649:	$rightScope = $scope->filterByTruthyValue($expr->left);
650:	$rightTypes = $this->specifyTypesInCondition($rightScope, $expr->right, $context)->setRootExpr($expr);
651:	$types = $context->true() ? $leftTypes->unionWith($rightTypes) : $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($rightScope));
652:	if ($context->false()) {
653:	return (new SpecifiedTypes(
654:	$types->getSureTypes(),
655:	$types->getSureNotTypes(),
656:	))->setNewConditionalExpressionHolders(array_merge(
657:	$this->processBooleanNotSureConditionalTypes($scope, $leftTypes, $rightTypes),
658:	$this->processBooleanNotSureConditionalTypes($scope, $rightTypes, $leftTypes),
659:	$this->processBooleanSureConditionalTypes($scope, $leftTypes, $rightTypes),
660:	$this->processBooleanSureConditionalTypes($scope, $rightTypes, $leftTypes),
661:	))->setRootExpr($expr);
662:	}
663:
664:	return $types;
665:	} elseif ($expr instanceof BooleanOr \|\| $expr instanceof LogicalOr) {
666:	if (!$scope instanceof MutatingScope) {
667:	throw new ShouldNotHappenException();
668:	}
669:	$leftTypes = $this->specifyTypesInCondition($scope, $expr->left, $context)->setRootExpr($expr);
670:	$rightScope = $scope->filterByFalseyValue($expr->left);
671:	$rightTypes = $this->specifyTypesInCondition($rightScope, $expr->right, $context)->setRootExpr($expr);
672:	$types = $context->true() ? $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($rightScope)) : $leftTypes->unionWith($rightTypes);
673:	if ($context->true()) {
674:	return (new SpecifiedTypes(
675:	$types->getSureTypes(),
676:	$types->getSureNotTypes(),
677:	))->setNewConditionalExpressionHolders(array_merge(
678:	$this->processBooleanNotSureConditionalTypes($scope, $leftTypes, $rightTypes),
679:	$this->processBooleanNotSureConditionalTypes($scope, $rightTypes, $leftTypes),
680:	$this->processBooleanSureConditionalTypes($scope, $leftTypes, $rightTypes),
681:	$this->processBooleanSureConditionalTypes($scope, $rightTypes, $leftTypes),
682:	))->setRootExpr($expr);
683:	}
684:
685:	return $types;
686:	} elseif ($expr instanceof Node\Expr\BooleanNot && !$context->null()) {
687:	return $this->specifyTypesInCondition($scope, $expr->expr, $context->negate())->setRootExpr($expr);
688:	} elseif ($expr instanceof Node\Expr\Assign) {
689:	if (!$scope instanceof MutatingScope) {
690:	throw new ShouldNotHappenException();
691:	}
692:
693:	if ($context->null()) {
694:	$specifiedTypes = $this->specifyTypesInCondition($scope->exitFirstLevelStatements(), $expr->expr, $context)->setRootExpr($expr);
695:
696:	// infer $arr[$key] after $key = array_key_first/last($arr)
697:	if (
698:	$expr->expr instanceof FuncCall
699:	&& $expr->expr->name instanceof Name
700:	&& in_array($expr->expr->name->toLowerString(), ['array_key_first', 'array_key_last'], true)
701:	&& count($expr->expr->getArgs()) >= 1
702:	) {
703:	$arrayArg = $expr->expr->getArgs()[0]->value;
704:	$arrayType = $scope->getType($arrayArg);
705:	if (
706:	$arrayType->isArray()->yes()
707:	&& $arrayType->isIterableAtLeastOnce()->yes()
708:	) {
709:	$dimFetch = new ArrayDimFetch($arrayArg, $expr->var);
710:	$iterableValueType = $expr->expr->name->toLowerString() === 'array_key_first'
711:	? $arrayType->getFirstIterableValueType()
712:	: $arrayType->getLastIterableValueType();
713:
714:	return $specifiedTypes->unionWith(
715:	$this->create($dimFetch, $iterableValueType, TypeSpecifierContext::createTrue(), $scope),
716:	);
717:	}
718:	}
719:
720:	// infer $list[$count] after $count = count($list) - 1
721:	if (
722:	$expr->expr instanceof Expr\BinaryOp\Minus
723:	&& $expr->expr->left instanceof FuncCall
724:	&& $expr->expr->left->name instanceof Name
725:	&& in_array($expr->expr->left->name->toLowerString(), ['count', 'sizeof'], true)
726:	&& count($expr->expr->left->getArgs()) >= 1
727:	&& $expr->expr->right instanceof Node\Scalar\Int_
728:	&& $expr->expr->right->value === 1
729:	) {
730:	$arrayArg = $expr->expr->left->getArgs()[0]->value;
731:	$arrayType = $scope->getType($arrayArg);
732:	if (
733:	$arrayType->isList()->yes()
734:	&& $arrayType->isIterableAtLeastOnce()->yes()
735:	) {
736:	$dimFetch = new ArrayDimFetch($arrayArg, $expr->var);
737:
738:	return $specifiedTypes->unionWith(
739:	$this->create($dimFetch, $arrayType->getLastIterableValueType(), TypeSpecifierContext::createTrue(), $scope),
740:	);
741:	}
742:	}
743:
744:	return $specifiedTypes;
745:	}
746:
747:	$specifiedTypes = $this->specifyTypesInCondition($scope->exitFirstLevelStatements(), $expr->var, $context)->setRootExpr($expr);
748:
749:	if ($context->true()) {
750:	// infer $arr[$key] after $key = array_search($needle, $arr)
751:	if (
752:	$expr->expr instanceof FuncCall
753:	&& $expr->expr->name instanceof Name
754:	&& $expr->expr->name->toLowerString() === 'array_search'
755:	&& count($expr->expr->getArgs()) >= 2
756:	) {
757:	$arrayArg = $expr->expr->getArgs()[1]->value;
758:	$arrayType = $scope->getType($arrayArg);
759:
760:	if ($arrayType->isArray()->yes()) {
761:	$dimFetch = new ArrayDimFetch($arrayArg, $expr->var);
762:	$iterableValueType = $arrayType->getIterableValueType();
763:
764:	return $specifiedTypes->unionWith(
765:	$this->create($dimFetch, $iterableValueType, TypeSpecifierContext::createTrue(), $scope),
766:	);
767:	}
768:	}
769:	}
770:	return $specifiedTypes;
771:	} elseif (
772:	$expr instanceof Expr\Isset_
773:	&& count($expr->vars) > 0
774:	&& !$context->null()
775:	) {
776:	// rewrite multi param isset() to and-chained single param isset()
777:	if (count($expr->vars) > 1) {
778:	$issets = [];
779:	foreach ($expr->vars as $var) {
780:	$issets[] = new Expr\Isset_([$var], $expr->getAttributes());
781:	}
782:
783:	$first = array_shift($issets);
784:	$andChain = null;
785:	foreach ($issets as $isset) {
786:	if ($andChain === null) {
787:	$andChain = new BooleanAnd($first, $isset);
788:	continue;
789:	}
790:
791:	$andChain = new BooleanAnd($andChain, $isset);
792:	}
793:
794:	if ($andChain === null) {
795:	throw new ShouldNotHappenException();
796:	}
797:
798:	return $this->specifyTypesInCondition($scope, $andChain, $context)->setRootExpr($expr);
799:	}
800:
801:	$issetExpr = $expr->vars[0];
802:
803:	if (!$context->true()) {
804:	if (!$scope instanceof MutatingScope) {
805:	throw new ShouldNotHappenException();
806:	}
807:
808:	$isset = $scope->issetCheck($issetExpr, static fn () => true);
809:
810:	if ($isset === false) {
811:	return new SpecifiedTypes();
812:	}
813:
814:	$type = $scope->getType($issetExpr);
815:	$isNullable = !$type->isNull()->no();
816:	$exprType = $this->create(
817:	$issetExpr,
818:	new NullType(),
819:	$context->negate(),
820:	$scope,
821:	)->setRootExpr($expr);
822:
823:	if ($issetExpr instanceof Expr\Variable && is_string($issetExpr->name)) {
824:	if ($isset === true) {
825:	if ($isNullable) {
826:	return $exprType;
827:	}
828:
829:	// variable cannot exist in !isset()
830:	return $exprType->unionWith($this->create(
831:	new IssetExpr($issetExpr),
832:	new NullType(),
833:	$context,
834:	$scope,
835:	))->setRootExpr($expr);
836:	}
837:
838:	if ($isNullable) {
839:	// reduces variable certainty to maybe
840:	return $exprType->unionWith($this->create(
841:	new IssetExpr($issetExpr),
842:	new NullType(),
843:	$context->negate(),
844:	$scope,
845:	))->setRootExpr($expr);
846:	}
847:
848:	// variable cannot exist in !isset()
849:	return $this->create(
850:	new IssetExpr($issetExpr),
851:	new NullType(),
852:	$context,
853:	$scope,
854:	)->setRootExpr($expr);
855:	}
856:
857:	if ($isNullable && $isset === true) {
858:	return $exprType;
859:	}
860:
861:	return new SpecifiedTypes();
862:	}
863:
864:	$tmpVars = [$issetExpr];
865:	while (
866:	$issetExpr instanceof ArrayDimFetch
867:	\|\| $issetExpr instanceof PropertyFetch
868:	\|\| (
869:	$issetExpr instanceof StaticPropertyFetch
870:	&& $issetExpr->class instanceof Expr
871:	)
872:	) {
873:	if ($issetExpr instanceof StaticPropertyFetch) {
874:	/** @var Expr $issetExpr */
875:	$issetExpr = $issetExpr->class;
876:	} else {
877:	$issetExpr = $issetExpr->var;
878:	}
879:	$tmpVars[] = $issetExpr;
880:	}
881:	$vars = array_reverse($tmpVars);
882:
883:	$types = new SpecifiedTypes();
884:	foreach ($vars as $var) {
885:
886:	if ($var instanceof Expr\Variable && is_string($var->name)) {
887:	if ($scope->hasVariableType($var->name)->no()) {
888:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
889:	}
890:	}
891:
892:	if (
893:	$var instanceof ArrayDimFetch
894:	&& $var->dim !== null
895:	&& !$scope->getType($var->var) instanceof MixedType
896:	) {
897:	$dimType = $scope->getType($var->dim);
898:
899:	if ($dimType instanceof ConstantIntegerType \|\| $dimType instanceof ConstantStringType) {
900:	$types = $types->unionWith(
901:	$this->create(
902:	$var->var,
903:	new HasOffsetType($dimType),
904:	$context,
905:	$scope,
906:	)->setRootExpr($expr),
907:	);
908:	} else {
909:	$varType = $scope->getType($var->var);
910:	$narrowedKey = AllowedArrayKeysTypes::narrowOffsetKeyType($varType, $dimType);
911:	if ($narrowedKey !== null) {
912:	$types = $types->unionWith(
913:	$this->create(
914:	$var->dim,
915:	$narrowedKey,
916:	$context,
917:	$scope,
918:	)->setRootExpr($expr),
919:	);
920:	}
921:	}
922:	}
923:
924:	if (
925:	$var instanceof PropertyFetch
926:	&& $var->name instanceof Node\Identifier
927:	) {
928:	$types = $types->unionWith(
929:	$this->create($var->var, new IntersectionType([
930:	new ObjectWithoutClassType(),
931:	new HasPropertyType($var->name->toString()),
932:	]), TypeSpecifierContext::createTruthy(), $scope)->setRootExpr($expr),
933:	);
934:	} elseif (
935:	$var instanceof StaticPropertyFetch
936:	&& $var->class instanceof Expr
937:	&& $var->name instanceof Node\VarLikeIdentifier
938:	) {
939:	$types = $types->unionWith(
940:	$this->create($var->class, new IntersectionType([
941:	new ObjectWithoutClassType(),
942:	new HasPropertyType($var->name->toString()),
943:	]), TypeSpecifierContext::createTruthy(), $scope)->setRootExpr($expr),
944:	);
945:	}
946:
947:	$types = $types->unionWith(
948:	$this->create($var, new NullType(), TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr),
949:	);
950:	}
951:
952:	return $types;
953:	} elseif (
954:	$expr instanceof Expr\BinaryOp\Coalesce
955:	&& !$context->null()
956:	) {
957:	if (!$context->true()) {
958:	if (!$scope instanceof MutatingScope) {
959:	throw new ShouldNotHappenException();
960:	}
961:
962:	$isset = $scope->issetCheck($expr->left, static fn () => true);
963:
964:	if ($isset !== true) {
965:	return new SpecifiedTypes();
966:	}
967:
968:	return $this->create(
969:	$expr->left,
970:	new NullType(),
971:	$context->negate(),
972:	$scope,
973:	)->setRootExpr($expr);
974:	}
975:
976:	if ((new ConstantBooleanType(false))->isSuperTypeOf($scope->getType($expr->right)->toBoolean())->yes()) {
977:	return $this->create(
978:	$expr->left,
979:	new NullType(),
980:	TypeSpecifierContext::createFalse(),
981:	$scope,
982:	)->setRootExpr($expr);
983:	}
984:
985:	} elseif (
986:	$expr instanceof Expr\Empty_
987:	) {
988:	if (!$scope instanceof MutatingScope) {
989:	throw new ShouldNotHappenException();
990:	}
991:
992:	$isset = $scope->issetCheck($expr->expr, static fn () => true);
993:	if ($isset === false) {
994:	return new SpecifiedTypes();
995:	}
996:
997:	return $this->specifyTypesInCondition($scope, new BooleanOr(
998:	new Expr\BooleanNot(new Expr\Isset_([$expr->expr])),
999:	new Expr\BooleanNot($expr->expr),
1000:	), $context)->setRootExpr($expr);
1001:	} elseif ($expr instanceof Expr\ErrorSuppress) {
1002:	return $this->specifyTypesInCondition($scope, $expr->expr, $context)->setRootExpr($expr);
1003:	} elseif (
1004:	$expr instanceof Expr\Ternary
1005:	&& !$context->null()
1006:	&& $scope->getType($expr->else)->isFalse()->yes()
1007:	) {
1008:	$conditionExpr = $expr->cond;
1009:	if ($expr->if !== null) {
1010:	$conditionExpr = new BooleanAnd($conditionExpr, $expr->if);
1011:	}
1012:
1013:	return $this->specifyTypesInCondition($scope, $conditionExpr, $context)->setRootExpr($expr);
1014:
1015:	} elseif ($expr instanceof Expr\NullsafePropertyFetch && !$context->null()) {
1016:	$types = $this->specifyTypesInCondition(
1017:	$scope,
1018:	new BooleanAnd(
1019:	new Expr\BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
1020:	new PropertyFetch($expr->var, $expr->name),
1021:	),
1022:	$context,
1023:	)->setRootExpr($expr);
1024:
1025:	$nullSafeTypes = $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
1026:	return $context->true() ? $types->unionWith($nullSafeTypes) : $types->normalize($scope)->intersectWith($nullSafeTypes->normalize($scope));
1027:	} elseif ($expr instanceof Expr\NullsafeMethodCall && !$context->null()) {
1028:	$types = $this->specifyTypesInCondition(
1029:	$scope,
1030:	new BooleanAnd(
1031:	new Expr\BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
1032:	new MethodCall($expr->var, $expr->name, $expr->args),
1033:	),
1034:	$context,
1035:	)->setRootExpr($expr);
1036:
1037:	$nullSafeTypes = $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
1038:	return $context->true() ? $types->unionWith($nullSafeTypes) : $types->normalize($scope)->intersectWith($nullSafeTypes->normalize($scope));
1039:	} elseif (
1040:	$expr instanceof Expr\New_
1041:	&& $expr->class instanceof Name
1042:	&& $this->reflectionProvider->hasClass($expr->class->toString())
1043:	) {
1044:	$classReflection = $this->reflectionProvider->getClass($expr->class->toString());
1045:
1046:	if ($classReflection->hasConstructor()) {
1047:	$methodReflection = $classReflection->getConstructor();
1048:	$asserts = $methodReflection->getAsserts();
1049:
1050:	if ($asserts->getAll() !== []) {
1051:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
1052:
1053:	$asserts = $asserts->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
1054:	$type,
1055:	$parametersAcceptor->getResolvedTemplateTypeMap(),
1056:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
1057:	TemplateTypeVariance::createInvariant(),
1058:	));
1059:
1060:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
1061:
1062:	if ($specifiedTypes !== null) {
1063:	return $specifiedTypes;
1064:	}
1065:	}
1066:	}
1067:	} elseif (!$context->null()) {
1068:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
1069:	}
1070:
1071:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1072:	}
1073:
1074:	private function specifyTypesForCountFuncCall(
1075:	FuncCall $countFuncCall,
1076:	Type $type,
1077:	Type $sizeType,
1078:	TypeSpecifierContext $context,
1079:	Scope $scope,
1080:	Expr $rootExpr,
1081:	): ?SpecifiedTypes
1082:	{
1083:	if (count($countFuncCall->getArgs()) === 1) {
1084:	$isNormalCount = TrinaryLogic::createYes();
1085:	} else {
1086:	$mode = $scope->getType($countFuncCall->getArgs()[1]->value);
1087:	$isNormalCount = (new ConstantIntegerType(COUNT_NORMAL))->isSuperTypeOf($mode)->result->or($type->getIterableValueType()->isArray()->negate());
1088:	}
1089:
1090:	$isConstantArray = $type->isConstantArray();
1091:	$isList = $type->isList();
1092:	$oneOrMore = IntegerRangeType::fromInterval(1, null);
1093:	if (
1094:	!$isNormalCount->yes()
1095:	\|\| (!$isConstantArray->yes() && !$isList->yes())
1096:	\|\| !$oneOrMore->isSuperTypeOf($sizeType)->yes()
1097:	\|\| $sizeType->isSuperTypeOf($type->getArraySize())->yes()
1098:	) {
1099:	return null;
1100:	}
1101:
1102:	$resultTypes = [];
1103:	foreach ($type->getArrays() as $arrayType) {
1104:	$isSizeSuperTypeOfArraySize = $sizeType->isSuperTypeOf($arrayType->getArraySize());
1105:	if ($isSizeSuperTypeOfArraySize->no()) {
1106:	continue;
1107:	}
1108:
1109:	if ($context->falsey() && $isSizeSuperTypeOfArraySize->maybe()) {
1110:	continue;
1111:	}
1112:
1113:	if (
1114:	$sizeType instanceof ConstantIntegerType
1115:	&& $sizeType->getValue() < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT
1116:	&& $arrayType->getKeyType()->isSuperTypeOf(IntegerRangeType::fromInterval(0, $sizeType->getValue() - 1))->yes()
1117:	) {
1118:	// turn optional offsets non-optional
1119:	$valueTypesBuilder = ConstantArrayTypeBuilder::createEmpty();
1120:	for ($i = 0; $i < $sizeType->getValue(); $i++) {
1121:	$offsetType = new ConstantIntegerType($i);
1122:	$valueTypesBuilder->setOffsetValueType($offsetType, $arrayType->getOffsetValueType($offsetType));
1123:	}
1124:	$resultTypes[] = $valueTypesBuilder->getArray();
1125:	continue;
1126:	}
1127:
1128:	if (
1129:	$sizeType instanceof IntegerRangeType
1130:	&& $sizeType->getMin() !== null
1131:	&& $sizeType->getMin() < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT
1132:	&& $arrayType->getKeyType()->isSuperTypeOf(IntegerRangeType::fromInterval(0, ($sizeType->getMax() ?? $sizeType->getMin()) - 1))->yes()
1133:	) {
1134:	$builderData = [];
1135:	// turn optional offsets non-optional
1136:	for ($i = 0; $i < $sizeType->getMin(); $i++) {
1137:	$offsetType = new ConstantIntegerType($i);
1138:	$builderData[] = [$offsetType, $arrayType->getOffsetValueType($offsetType), false];
1139:	}
1140:	if ($sizeType->getMax() !== null) {
1141:	if ($sizeType->getMax() - $sizeType->getMin() > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
1142:	$resultTypes[] = $arrayType;
1143:	continue;
1144:	}
1145:	for ($i = $sizeType->getMin(); $i < $sizeType->getMax(); $i++) {
1146:	$offsetType = new ConstantIntegerType($i);
1147:	$builderData[] = [$offsetType, $arrayType->getOffsetValueType($offsetType), true];
1148:	}
1149:	} elseif ($arrayType->isConstantArray()->yes()) {
1150:	for ($i = $sizeType->getMin();; $i++) {
1151:	$offsetType = new ConstantIntegerType($i);
1152:	$hasOffset = $arrayType->hasOffsetValueType($offsetType);
1153:	if ($hasOffset->no()) {
1154:	break;
1155:	}
1156:	$builderData[] = [$offsetType, $arrayType->getOffsetValueType($offsetType), !$hasOffset->yes()];
1157:	}
1158:	} else {
1159:	$resultTypes[] = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
1160:	continue;
1161:	}
1162:
1163:	if (count($builderData) > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
1164:	$resultTypes[] = $arrayType;
1165:	continue;
1166:	}
1167:
1168:	$builder = ConstantArrayTypeBuilder::createEmpty();
1169:	foreach ($builderData as [$offsetType, $valueType, $optional]) {
1170:	$builder->setOffsetValueType($offsetType, $valueType, $optional);
1171:	}
1172:
1173:	$resultTypes[] = $builder->getArray();
1174:	continue;
1175:	}
1176:
1177:	$resultTypes[] = $arrayType;
1178:	}
1179:
1180:	return $this->create($countFuncCall->getArgs()[0]->value, TypeCombinator::union(...$resultTypes), $context, $scope)->setRootExpr($rootExpr);
1181:	}
1182:
1183:	private function specifyTypesForConstantBinaryExpression(
1184:	Expr $exprNode,
1185:	Type $constantType,
1186:	TypeSpecifierContext $context,
1187:	Scope $scope,
1188:	Expr $rootExpr,
1189:	): ?SpecifiedTypes
1190:	{
1191:	if (!$context->null() && $constantType->isFalse()->yes()) {
1192:	$types = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
1193:	if (!$context->true() && ($exprNode instanceof Expr\NullsafeMethodCall \|\| $exprNode instanceof Expr\NullsafePropertyFetch)) {
1194:	return $types;
1195:	}
1196:
1197:	return $types->unionWith($this->specifyTypesInCondition(
1198:	$scope,
1199:	$exprNode,
1200:	$context->true() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createFalse()->negate(),
1201:	)->setRootExpr($rootExpr));
1202:	}
1203:
1204:	if (!$context->null() && $constantType->isTrue()->yes()) {
1205:	$types = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
1206:	if (!$context->true() && ($exprNode instanceof Expr\NullsafeMethodCall \|\| $exprNode instanceof Expr\NullsafePropertyFetch)) {
1207:	return $types;
1208:	}
1209:
1210:	return $types->unionWith($this->specifyTypesInCondition(
1211:	$scope,
1212:	$exprNode,
1213:	$context->true() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createTrue()->negate(),
1214:	)->setRootExpr($rootExpr));
1215:	}
1216:
1217:	return null;
1218:	}
1219:
1220:	private function specifyTypesForConstantStringBinaryExpression(
1221:	Expr $exprNode,
1222:	Type $constantType,
1223:	TypeSpecifierContext $context,
1224:	Scope $scope,
1225:	Expr $rootExpr,
1226:	): ?SpecifiedTypes
1227:	{
1228:	$scalarValues = $constantType->getConstantScalarValues();
1229:	if (count($scalarValues) !== 1 \|\| !is_string($scalarValues[0])) {
1230:	return null;
1231:	}
1232:	$constantStringValue = $scalarValues[0];
1233:
1234:	if (
1235:	$exprNode instanceof FuncCall
1236:	&& $exprNode->name instanceof Name
1237:	&& strtolower($exprNode->name->toString()) === 'gettype'
1238:	&& isset($exprNode->getArgs()[0])
1239:	) {
1240:	$type = null;
1241:	if ($constantStringValue === 'string') {
1242:	$type = new StringType();
1243:	}
1244:	if ($constantStringValue === 'array') {
1245:	$type = new ArrayType(new MixedType(), new MixedType());
1246:	}
1247:	if ($constantStringValue === 'boolean') {
1248:	$type = new BooleanType();
1249:	}
1250:	if (in_array($constantStringValue, ['resource', 'resource (closed)'], true)) {
1251:	$type = new ResourceType();
1252:	}
1253:	if ($constantStringValue === 'integer') {
1254:	$type = new IntegerType();
1255:	}
1256:	if ($constantStringValue === 'double') {
1257:	$type = new FloatType();
1258:	}
1259:	if ($constantStringValue === 'NULL') {
1260:	$type = new NullType();
1261:	}
1262:	if ($constantStringValue === 'object') {
1263:	$type = new ObjectWithoutClassType();
1264:	}
1265:
1266:	if ($type !== null) {
1267:	$callType = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
1268:	$argType = $this->create($exprNode->getArgs()[0]->value, $type, $context, $scope)->setRootExpr($rootExpr);
1269:	return $callType->unionWith($argType);
1270:	}
1271:	}
1272:
1273:	if (
1274:	$context->true()
1275:	&& $exprNode instanceof FuncCall
1276:	&& $exprNode->name instanceof Name
1277:	&& strtolower((string) $exprNode->name) === 'get_parent_class'
1278:	&& isset($exprNode->getArgs()[0])
1279:	) {
1280:	$argType = $scope->getType($exprNode->getArgs()[0]->value);
1281:	$objectType = new ObjectType($constantStringValue);
1282:	$classStringType = new GenericClassStringType($objectType);
1283:
1284:	if ($argType->isString()->yes()) {
1285:	return $this->create(
1286:	$exprNode->getArgs()[0]->value,
1287:	$classStringType,
1288:	$context,
1289:	$scope,
1290:	)->setRootExpr($rootExpr);
1291:	}
1292:
1293:	if ($argType->isObject()->yes()) {
1294:	return $this->create(
1295:	$exprNode->getArgs()[0]->value,
1296:	$objectType,
1297:	$context,
1298:	$scope,
1299:	)->setRootExpr($rootExpr);
1300:	}
1301:
1302:	return $this->create(
1303:	$exprNode->getArgs()[0]->value,
1304:	TypeCombinator::union($objectType, $classStringType),
1305:	$context,
1306:	$scope,
1307:	)->setRootExpr($rootExpr);
1308:	}
1309:
1310:	return null;
1311:	}
1312:
1313:	private function handleDefaultTruthyOrFalseyContext(TypeSpecifierContext $context, Expr $expr, Scope $scope): SpecifiedTypes
1314:	{
1315:	if ($context->null()) {
1316:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1317:	}
1318:	if (!$context->truthy()) {
1319:	$type = StaticTypeFactory::truthy();
1320:	return $this->create($expr, $type, TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr);
1321:	} elseif (!$context->falsey()) {
1322:	$type = StaticTypeFactory::falsey();
1323:	return $this->create($expr, $type, TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr);
1324:	}
1325:
1326:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1327:	}
1328:
1329:	private function specifyTypesFromConditionalReturnType(
1330:	TypeSpecifierContext $context,
1331:	Expr\CallLike $call,
1332:	ParametersAcceptor $parametersAcceptor,
1333:	Scope $scope,
1334:	): ?SpecifiedTypes
1335:	{
1336:	if (!$parametersAcceptor instanceof ResolvedFunctionVariant) {
1337:	return null;
1338:	}
1339:
1340:	$returnType = $parametersAcceptor->getOriginalParametersAcceptor()->getReturnType();
1341:	if (!$returnType instanceof ConditionalTypeForParameter) {
1342:	return null;
1343:	}
1344:
1345:	if ($context->true()) {
1346:	$leftType = new ConstantBooleanType(true);
1347:	$rightType = new ConstantBooleanType(false);
1348:	} elseif ($context->false()) {
1349:	$leftType = new ConstantBooleanType(false);
1350:	$rightType = new ConstantBooleanType(true);
1351:	} elseif ($context->null()) {
1352:	$leftType = new MixedType();
1353:	$rightType = new NeverType();
1354:	} else {
1355:	return null;
1356:	}
1357:
1358:	$argsMap = [];
1359:	$parameters = $parametersAcceptor->getParameters();
1360:	foreach ($call->getArgs() as $i => $arg) {
1361:	if ($arg->unpack) {
1362:	continue;
1363:	}
1364:
1365:	if ($arg->name !== null) {
1366:	$paramName = $arg->name->toString();
1367:	} elseif (isset($parameters[$i])) {
1368:	$paramName = $parameters[$i]->getName();
1369:	} else {
1370:	continue;
1371:	}
1372:
1373:	$argsMap['$' . $paramName] = $arg->value;
1374:	}
1375:
1376:	return $this->getConditionalSpecifiedTypes($returnType, $leftType, $rightType, $scope, $argsMap);
1377:	}
1378:
1379:	/**
1380:	* @param array<string, Expr> $argsMap
1381:	*/
1382:	public function getConditionalSpecifiedTypes(
1383:	ConditionalTypeForParameter $conditionalType,
1384:	Type $leftType,
1385:	Type $rightType,
1386:	Scope $scope,
1387:	array $argsMap,
1388:	): ?SpecifiedTypes
1389:	{
1390:	$parameterName = $conditionalType->getParameterName();
1391:	if (!array_key_exists($parameterName, $argsMap)) {
1392:	return null;
1393:	}
1394:
1395:	$targetType = $conditionalType->getTarget();
1396:	$ifType = $conditionalType->getIf();
1397:	$elseType = $conditionalType->getElse();
1398:
1399:	if ($leftType->isSuperTypeOf($ifType)->yes() && $rightType->isSuperTypeOf($elseType)->yes()) {
1400:	$context = $conditionalType->isNegated() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createTrue();
1401:	} elseif ($leftType->isSuperTypeOf($elseType)->yes() && $rightType->isSuperTypeOf($ifType)->yes()) {
1402:	$context = $conditionalType->isNegated() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createFalse();
1403:	} else {
1404:	return null;
1405:	}
1406:
1407:	$specifiedTypes = $this->create(
1408:	$argsMap[$parameterName],
1409:	$targetType,
1410:	$context,
1411:	$scope,
1412:	);
1413:
1414:	if ($targetType instanceof ConstantBooleanType) {
1415:	if (!$targetType->getValue()) {
1416:	$context = $context->negate();
1417:	}
1418:
1419:	$specifiedTypes = $specifiedTypes->unionWith($this->specifyTypesInCondition($scope, $argsMap[$parameterName], $context));
1420:	}
1421:
1422:	return $specifiedTypes;
1423:	}
1424:
1425:	private function specifyTypesFromAsserts(TypeSpecifierContext $context, Expr\CallLike $call, Assertions $assertions, ParametersAcceptor $parametersAcceptor, Scope $scope): ?SpecifiedTypes
1426:	{
1427:	if ($context->null()) {
1428:	$asserts = $assertions->getAsserts();
1429:	} elseif ($context->true()) {
1430:	$asserts = $assertions->getAssertsIfTrue();
1431:	} elseif ($context->false()) {
1432:	$asserts = $assertions->getAssertsIfFalse();
1433:	} else {
1434:	throw new ShouldNotHappenException();
1435:	}
1436:
1437:	if (count($asserts) === 0) {
1438:	return null;
1439:	}
1440:
1441:	$argsMap = [];
1442:	$parameters = $parametersAcceptor->getParameters();
1443:	foreach ($call->getArgs() as $i => $arg) {
1444:	if ($arg->unpack) {
1445:	continue;
1446:	}
1447:
1448:	if ($arg->name !== null) {
1449:	$paramName = $arg->name->toString();
1450:	} elseif (isset($parameters[$i])) {
1451:	$paramName = $parameters[$i]->getName();
1452:	} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
1453:	$lastParameter = $parameters[count($parameters) - 1];
1454:	$paramName = $lastParameter->getName();
1455:	} else {
1456:	continue;
1457:	}
1458:
1459:	$argsMap[$paramName][] = $arg->value;
1460:	}
1461:
1462:	if ($call instanceof MethodCall) {
1463:	$argsMap['this'] = [$call->var];
1464:	}
1465:
1466:	/** @var SpecifiedTypes\|null $types */
1467:	$types = null;
1468:
1469:	foreach ($asserts as $assert) {
1470:	foreach ($argsMap[substr($assert->getParameter()->getParameterName(), 1)] ?? [] as $parameterExpr) {
1471:	$assertedType = TypeTraverser::map($assert->getType(), static function (Type $type, callable $traverse) use ($argsMap, $scope): Type {
1472:	if ($type instanceof ConditionalTypeForParameter) {
1473:	$parameterName = substr($type->getParameterName(), 1);
1474:	if (array_key_exists($parameterName, $argsMap)) {
1475:	$argType = TypeCombinator::union(...array_map(static fn (Expr $expr) => $scope->getType($expr), $argsMap[$parameterName]));
1476:	$type = $type->toConditional($argType);
1477:	}
1478:	}
1479:
1480:	return $traverse($type);
1481:	});
1482:
1483:	$assertExpr = $assert->getParameter()->getExpr($parameterExpr);
1484:
1485:	$templateTypeMap = $parametersAcceptor->getResolvedTemplateTypeMap();
1486:	$containsUnresolvedTemplate = false;
1487:	TypeTraverser::map(
1488:	$assert->getOriginalType(),
1489:	static function (Type $type, callable $traverse) use ($templateTypeMap, &$containsUnresolvedTemplate) {
1490:	if ($type instanceof TemplateType && $type->getScope()->getClassName() !== null) {
1491:	$resolvedType = $templateTypeMap->getType($type->getName());
1492:	if ($resolvedType === null \|\| $type->getBound()->equals($resolvedType)) {
1493:	$containsUnresolvedTemplate = true;
1494:	return $type;
1495:	}
1496:	}
1497:
1498:	return $traverse($type);
1499:	},
1500:	);
1501:
1502:	$newTypes = $this->create(
1503:	$assertExpr,
1504:	$assertedType,
1505:	$assert->isNegated() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createTrue(),
1506:	$scope,
1507:	)->setRootExpr($containsUnresolvedTemplate \|\| $assert->isEquality() ? $call : null);
1508:	$types = $types !== null ? $types->unionWith($newTypes) : $newTypes;
1509:
1510:	if (!$context->null() \|\| !$assertedType instanceof ConstantBooleanType) {
1511:	continue;
1512:	}
1513:
1514:	$subContext = $assertedType->getValue() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createFalse();
1515:	if ($assert->isNegated()) {
1516:	$subContext = $subContext->negate();
1517:	}
1518:
1519:	$types = $types->unionWith($this->specifyTypesInCondition(
1520:	$scope,
1521:	$assertExpr,
1522:	$subContext,
1523:	));
1524:	}
1525:	}
1526:
1527:	return $types;
1528:	}
1529:
1530:	/**
1531:	* @return array<string, ConditionalExpressionHolder[]>
1532:	*/
1533:	private function processBooleanSureConditionalTypes(Scope $scope, SpecifiedTypes $leftTypes, SpecifiedTypes $rightTypes): array
1534:	{
1535:	$conditionExpressionTypes = [];
1536:	foreach ($leftTypes->getSureTypes() as $exprString => [$expr, $type]) {
1537:	if (!$expr instanceof Expr\Variable) {
1538:	continue;
1539:	}
1540:	if (!is_string($expr->name)) {
1541:	continue;
1542:	}
1543:
1544:	$conditionExpressionTypes[$exprString] = ExpressionTypeHolder::createYes(
1545:	$expr,
1546:	TypeCombinator::remove($scope->getType($expr), $type),
1547:	);
1548:	}
1549:
1550:	if (count($conditionExpressionTypes) > 0) {
1551:	$holders = [];
1552:	foreach ($rightTypes->getSureTypes() as $exprString => [$expr, $type]) {
1553:	if (!$expr instanceof Expr\Variable) {
1554:	continue;
1555:	}
1556:	if (!is_string($expr->name)) {
1557:	continue;
1558:	}
1559:
1560:	if (!isset($holders[$exprString])) {
1561:	$holders[$exprString] = [];
1562:	}
1563:
1564:	$conditions = $conditionExpressionTypes;
1565:	foreach ($conditions as $conditionExprString => $conditionExprTypeHolder) {
1566:	$conditionExpr = $conditionExprTypeHolder->getExpr();
1567:	if (!$conditionExpr instanceof Expr\Variable) {
1568:	continue;
1569:	}
1570:	if (!is_string($conditionExpr->name)) {
1571:	continue;
1572:	}
1573:	if ($conditionExpr->name !== $expr->name) {
1574:	continue;
1575:	}
1576:
1577:	unset($conditions[$conditionExprString]);
1578:	}
1579:
1580:	if (count($conditions) === 0) {
1581:	continue;
1582:	}
1583:
1584:	$holder = new ConditionalExpressionHolder(
1585:	$conditions,
1586:	new ExpressionTypeHolder($expr, TypeCombinator::intersect($scope->getType($expr), $type), TrinaryLogic::createYes()),
1587:	);
1588:	$holders[$exprString][$holder->getKey()] = $holder;
1589:	}
1590:
1591:	return $holders;
1592:	}
1593:
1594:	return [];
1595:	}
1596:
1597:	/**
1598:	* @return array<string, ConditionalExpressionHolder[]>
1599:	*/
1600:	private function processBooleanNotSureConditionalTypes(Scope $scope, SpecifiedTypes $leftTypes, SpecifiedTypes $rightTypes): array
1601:	{
1602:	$conditionExpressionTypes = [];
1603:	foreach ($leftTypes->getSureNotTypes() as $exprString => [$expr, $type]) {
1604:	if (!$expr instanceof Expr\Variable) {
1605:	continue;
1606:	}
1607:	if (!is_string($expr->name)) {
1608:	continue;
1609:	}
1610:
1611:	$conditionExpressionTypes[$exprString] = ExpressionTypeHolder::createYes(
1612:	$expr,
1613:	TypeCombinator::intersect($scope->getType($expr), $type),
1614:	);
1615:	}
1616:
1617:	if (count($conditionExpressionTypes) > 0) {
1618:	$holders = [];
1619:	foreach ($rightTypes->getSureNotTypes() as $exprString => [$expr, $type]) {
1620:	if (!$expr instanceof Expr\Variable) {
1621:	continue;
1622:	}
1623:	if (!is_string($expr->name)) {
1624:	continue;
1625:	}
1626:
1627:	if (!isset($holders[$exprString])) {
1628:	$holders[$exprString] = [];
1629:	}
1630:
1631:	$conditions = $conditionExpressionTypes;
1632:	foreach ($conditions as $conditionExprString => $conditionExprTypeHolder) {
1633:	$conditionExpr = $conditionExprTypeHolder->getExpr();
1634:	if (!$conditionExpr instanceof Expr\Variable) {
1635:	continue;
1636:	}
1637:	if (!is_string($conditionExpr->name)) {
1638:	continue;
1639:	}
1640:	if ($conditionExpr->name !== $expr->name) {
1641:	continue;
1642:	}
1643:
1644:	unset($conditions[$conditionExprString]);
1645:	}
1646:
1647:	if (count($conditions) === 0) {
1648:	continue;
1649:	}
1650:
1651:	$holder = new ConditionalExpressionHolder(
1652:	$conditions,
1653:	new ExpressionTypeHolder($expr, TypeCombinator::remove($scope->getType($expr), $type), TrinaryLogic::createYes()),
1654:	);
1655:	$holders[$exprString][$holder->getKey()] = $holder;
1656:	}
1657:
1658:	return $holders;
1659:	}
1660:
1661:	return [];
1662:	}
1663:
1664:	/**
1665:	* @return array{Expr, ConstantScalarType, Type}\|null
1666:	*/
1667:	private function findTypeExpressionsFromBinaryOperation(Scope $scope, Node\Expr\BinaryOp $binaryOperation): ?array
1668:	{
1669:	$leftType = $scope->getType($binaryOperation->left);
1670:	$rightType = $scope->getType($binaryOperation->right);
1671:
1672:	$rightExpr = $binaryOperation->right;
1673:	if ($rightExpr instanceof AlwaysRememberedExpr) {
1674:	$rightExpr = $rightExpr->getExpr();
1675:	}
1676:
1677:	$leftExpr = $binaryOperation->left;
1678:	if ($leftExpr instanceof AlwaysRememberedExpr) {
1679:	$leftExpr = $leftExpr->getExpr();
1680:	}
1681:
1682:	if (
1683:	$leftType instanceof ConstantScalarType
1684:	&& !$rightExpr instanceof ConstFetch
1685:	&& !$rightExpr instanceof ClassConstFetch
1686:	) {
1687:	return [$binaryOperation->right, $leftType, $rightType];
1688:	} elseif (
1689:	$rightType instanceof ConstantScalarType
1690:	&& !$leftExpr instanceof ConstFetch
1691:	&& !$leftExpr instanceof ClassConstFetch
1692:	) {
1693:	return [$binaryOperation->left, $rightType, $leftType];
1694:	}
1695:
1696:	return null;
1697:	}
1698:
1699:	/** @api */
1700:	public function create(
1701:	Expr $expr,
1702:	Type $type,
1703:	TypeSpecifierContext $context,
1704:	Scope $scope,
1705:	): SpecifiedTypes
1706:	{
1707:	if ($expr instanceof Instanceof_ \|\| $expr instanceof Expr\List_) {
1708:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1709:	}
1710:
1711:	$specifiedExprs = [];
1712:	if ($expr instanceof AlwaysRememberedExpr) {
1713:	$specifiedExprs[] = $expr;
1714:	$expr = $expr->expr;
1715:	}
1716:
1717:	if ($expr instanceof Expr\Assign) {
1718:	$specifiedExprs[] = $expr->var;
1719:	$specifiedExprs[] = $expr->expr;
1720:
1721:	while ($expr->expr instanceof Expr\Assign) {
1722:	$specifiedExprs[] = $expr->expr->var;
1723:	$expr = $expr->expr;
1724:	}
1725:	} elseif ($expr instanceof Expr\AssignOp\Coalesce) {
1726:	$specifiedExprs[] = $expr->var;
1727:	} else {
1728:	$specifiedExprs[] = $expr;
1729:	}
1730:
1731:	$types = null;
1732:
1733:	foreach ($specifiedExprs as $specifiedExpr) {
1734:	$newTypes = $this->createForExpr($specifiedExpr, $type, $context, $scope);
1735:
1736:	if ($types === null) {
1737:	$types = $newTypes;
1738:	} else {
1739:	$types = $types->unionWith($newTypes);
1740:	}
1741:	}
1742:
1743:	return $types;
1744:	}
1745:
1746:	private function createForExpr(
1747:	Expr $expr,
1748:	Type $type,
1749:	TypeSpecifierContext $context,
1750:	Scope $scope,
1751:	): SpecifiedTypes
1752:	{
1753:	if ($context->true()) {
1754:	$containsNull = !$type->isNull()->no() && !$scope->getType($expr)->isNull()->no();
1755:	} elseif ($context->false()) {
1756:	$containsNull = !TypeCombinator::containsNull($type) && !$scope->getType($expr)->isNull()->no();
1757:	}
1758:
1759:	$originalExpr = $expr;
1760:	if (isset($containsNull) && !$containsNull) {
1761:	$expr = NullsafeOperatorHelper::getNullsafeShortcircuitedExpr($expr);
1762:	}
1763:
1764:	if (
1765:	!$context->null()
1766:	&& $expr instanceof Expr\BinaryOp\Coalesce
1767:	) {
1768:	$rightIsSuperType = $type->isSuperTypeOf($scope->getType($expr->right));
1769:	if (($context->true() && $rightIsSuperType->no()) \|\| ($context->false() && $rightIsSuperType->yes())) {
1770:	$expr = $expr->left;
1771:	}
1772:	}
1773:
1774:	if (
1775:	$expr instanceof FuncCall
1776:	&& $expr->name instanceof Name
1777:	) {
1778:	$has = $this->reflectionProvider->hasFunction($expr->name, $scope);
1779:	if (!$has) {
1780:	// backwards compatibility with previous behaviour
1781:	return new SpecifiedTypes([], []);
1782:	}
1783:
1784:	$functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
1785:	$hasSideEffects = $functionReflection->hasSideEffects();
1786:	if ($hasSideEffects->yes()) {
1787:	return new SpecifiedTypes([], []);
1788:	}
1789:
1790:	if (!$this->rememberPossiblyImpureFunctionValues && !$hasSideEffects->no()) {
1791:	return new SpecifiedTypes([], []);
1792:	}
1793:	}
1794:
1795:	if (
1796:	$expr instanceof MethodCall
1797:	&& $expr->name instanceof Node\Identifier
1798:	) {
1799:	$methodName = $expr->name->toString();
1800:	$calledOnType = $scope->getType($expr->var);
1801:	$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
1802:	if (
1803:	$methodReflection === null
1804:	\|\| $methodReflection->hasSideEffects()->yes()
1805:	\|\| (!$this->rememberPossiblyImpureFunctionValues && !$methodReflection->hasSideEffects()->no())
1806:	) {
1807:	if (isset($containsNull) && !$containsNull) {
1808:	return $this->createNullsafeTypes($originalExpr, $scope, $context, $type);
1809:	}
1810:
1811:	return new SpecifiedTypes([], []);
1812:	}
1813:	}
1814:
1815:	if (
1816:	$expr instanceof StaticCall
1817:	&& $expr->name instanceof Node\Identifier
1818:	) {
1819:	$methodName = $expr->name->toString();
1820:	if ($expr->class instanceof Name) {
1821:	$calledOnType = $scope->resolveTypeByName($expr->class);
1822:	} else {
1823:	$calledOnType = $scope->getType($expr->class);
1824:	}
1825:
1826:	$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
1827:	if (
1828:	$methodReflection === null
1829:	\|\| $methodReflection->hasSideEffects()->yes()
1830:	\|\| (!$this->rememberPossiblyImpureFunctionValues && !$methodReflection->hasSideEffects()->no())
1831:	) {
1832:	if (isset($containsNull) && !$containsNull) {
1833:	return $this->createNullsafeTypes($originalExpr, $scope, $context, $type);
1834:	}
1835:
1836:	return new SpecifiedTypes([], []);
1837:	}
1838:	}
1839:
1840:	$sureTypes = [];
1841:	$sureNotTypes = [];
1842:	$exprString = $this->exprPrinter->printExpr($expr);
1843:	$originalExprString = $this->exprPrinter->printExpr($originalExpr);
1844:	if ($context->false()) {
1845:	$sureNotTypes[$exprString] = [$expr, $type];
1846:	if ($exprString !== $originalExprString) {
1847:	$sureNotTypes[$originalExprString] = [$originalExpr, $type];
1848:	}
1849:	} elseif ($context->true()) {
1850:	$sureTypes[$exprString] = [$expr, $type];
1851:	if ($exprString !== $originalExprString) {
1852:	$sureTypes[$originalExprString] = [$originalExpr, $type];
1853:	}
1854:	}
1855:
1856:	$types = new SpecifiedTypes($sureTypes, $sureNotTypes);
1857:	if (isset($containsNull) && !$containsNull) {
1858:	return $this->createNullsafeTypes($originalExpr, $scope, $context, $type)->unionWith($types);
1859:	}
1860:
1861:	return $types;
1862:	}
1863:
1864:	private function createNullsafeTypes(Expr $expr, Scope $scope, TypeSpecifierContext $context, ?Type $type): SpecifiedTypes
1865:	{
1866:	if ($expr instanceof Expr\NullsafePropertyFetch) {
1867:	if ($type !== null) {
1868:	$propertyFetchTypes = $this->create(new PropertyFetch($expr->var, $expr->name), $type, $context, $scope);
1869:	} else {
1870:	$propertyFetchTypes = $this->create(new PropertyFetch($expr->var, $expr->name), new NullType(), TypeSpecifierContext::createFalse(), $scope);
1871:	}
1872:
1873:	return $propertyFetchTypes->unionWith(
1874:	$this->create($expr->var, new NullType(), TypeSpecifierContext::createFalse(), $scope),
1875:	);
1876:	}
1877:
1878:	if ($expr instanceof Expr\NullsafeMethodCall) {
1879:	if ($type !== null) {
1880:	$methodCallTypes = $this->create(new MethodCall($expr->var, $expr->name, $expr->args), $type, $context, $scope);
1881:	} else {
1882:	$methodCallTypes = $this->create(new MethodCall($expr->var, $expr->name, $expr->args), new NullType(), TypeSpecifierContext::createFalse(), $scope);
1883:	}
1884:
1885:	return $methodCallTypes->unionWith(
1886:	$this->create($expr->var, new NullType(), TypeSpecifierContext::createFalse(), $scope),
1887:	);
1888:	}
1889:
1890:	if ($expr instanceof Expr\PropertyFetch) {
1891:	return $this->createNullsafeTypes($expr->var, $scope, $context, null);
1892:	}
1893:
1894:	if ($expr instanceof Expr\MethodCall) {
1895:	return $this->createNullsafeTypes($expr->var, $scope, $context, null);
1896:	}
1897:
1898:	if ($expr instanceof Expr\ArrayDimFetch) {
1899:	return $this->createNullsafeTypes($expr->var, $scope, $context, null);
1900:	}
1901:
1902:	if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
1903:	return $this->createNullsafeTypes($expr->class, $scope, $context, null);
1904:	}
1905:
1906:	if ($expr instanceof Expr\StaticCall && $expr->class instanceof Expr) {
1907:	return $this->createNullsafeTypes($expr->class, $scope, $context, null);
1908:	}
1909:
1910:	return new SpecifiedTypes([], []);
1911:	}
1912:
1913:	private function createRangeTypes(?Expr $rootExpr, Expr $expr, Type $type, TypeSpecifierContext $context): SpecifiedTypes
1914:	{
1915:	$sureNotTypes = [];
1916:
1917:	if ($type instanceof IntegerRangeType \|\| $type instanceof ConstantIntegerType) {
1918:	$exprString = $this->exprPrinter->printExpr($expr);
1919:	if ($context->false()) {
1920:	$sureNotTypes[$exprString] = [$expr, $type];
1921:	} elseif ($context->true()) {
1922:	$inverted = TypeCombinator::remove(new IntegerType(), $type);
1923:	$sureNotTypes[$exprString] = [$expr, $inverted];
1924:	}
1925:	}
1926:
1927:	return (new SpecifiedTypes(sureNotTypes: $sureNotTypes))->setRootExpr($rootExpr);
1928:	}
1929:
1930:	/**
1931:	* @return FunctionTypeSpecifyingExtension[]
1932:	*/
1933:	private function getFunctionTypeSpecifyingExtensions(): array
1934:	{
1935:	return $this->functionTypeSpecifyingExtensions;
1936:	}
1937:
1938:	/**
1939:	* @return MethodTypeSpecifyingExtension[]
1940:	*/
1941:	private function getMethodTypeSpecifyingExtensionsForClass(string $className): array
1942:	{
1943:	if ($this->methodTypeSpecifyingExtensionsByClass === null) {
1944:	$byClass = [];
1945:	foreach ($this->methodTypeSpecifyingExtensions as $extension) {
1946:	$byClass[$extension->getClass()][] = $extension;
1947:	}
1948:
1949:	$this->methodTypeSpecifyingExtensionsByClass = $byClass;
1950:	}
1951:	return $this->getTypeSpecifyingExtensionsForType($this->methodTypeSpecifyingExtensionsByClass, $className);
1952:	}
1953:
1954:	/**
1955:	* @return StaticMethodTypeSpecifyingExtension[]
1956:	*/
1957:	private function getStaticMethodTypeSpecifyingExtensionsForClass(string $className): array
1958:	{
1959:	if ($this->staticMethodTypeSpecifyingExtensionsByClass === null) {
1960:	$byClass = [];
1961:	foreach ($this->staticMethodTypeSpecifyingExtensions as $extension) {
1962:	$byClass[$extension->getClass()][] = $extension;
1963:	}
1964:
1965:	$this->staticMethodTypeSpecifyingExtensionsByClass = $byClass;
1966:	}
1967:	return $this->getTypeSpecifyingExtensionsForType($this->staticMethodTypeSpecifyingExtensionsByClass, $className);
1968:	}
1969:
1970:	/**
1971:	* @param MethodTypeSpecifyingExtension[][]\|StaticMethodTypeSpecifyingExtension[][] $extensions
1972:	* @return mixed[]
1973:	*/
1974:	private function getTypeSpecifyingExtensionsForType(array $extensions, string $className): array
1975:	{
1976:	$extensionsForClass = [[]];
1977:	$class = $this->reflectionProvider->getClass($className);
1978:	foreach (array_merge([$className], $class->getParentClassesNames(), $class->getNativeReflection()->getInterfaceNames()) as $extensionClassName) {
1979:	if (!isset($extensions[$extensionClassName])) {
1980:	continue;
1981:	}
1982:
1983:	$extensionsForClass[] = $extensions[$extensionClassName];
1984:	}
1985:
1986:	return array_merge(...$extensionsForClass);
1987:	}
1988:
1989:	public function resolveEqual(Expr\BinaryOp\Equal $expr, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
1990:	{
1991:	$expressions = $this->findTypeExpressionsFromBinaryOperation($scope, $expr);
1992:	if ($expressions !== null) {
1993:	$exprNode = $expressions[0];
1994:	$constantType = $expressions[1];
1995:	$otherType = $expressions[2];
1996:
1997:	if (!$context->null() && $constantType->getValue() === null) {
1998:	$trueTypes = [
1999:	new NullType(),
2000:	new ConstantBooleanType(false),
2001:	new ConstantIntegerType(0),
2002:	new ConstantFloatType(0.0),
2003:	new ConstantStringType(''),
2004:	new ConstantArrayType([], []),
2005:	];
2006:	return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
2007:	}
2008:
2009:	if (!$context->null() && $constantType->getValue() === false) {
2010:	return $this->specifyTypesInCondition(
2011:	$scope,
2012:	$exprNode,
2013:	$context->true() ? TypeSpecifierContext::createFalsey() : TypeSpecifierContext::createFalsey()->negate(),
2014:	)->setRootExpr($expr);
2015:	}
2016:
2017:	if (!$context->null() && $constantType->getValue() === true) {
2018:	return $this->specifyTypesInCondition(
2019:	$scope,
2020:	$exprNode,
2021:	$context->true() ? TypeSpecifierContext::createTruthy() : TypeSpecifierContext::createTruthy()->negate(),
2022:	)->setRootExpr($expr);
2023:	}
2024:
2025:	if (!$context->null() && $constantType->getValue() === 0 && !$otherType->isInteger()->yes() && !$otherType->isBoolean()->yes()) {
2026:	/* There is a difference between php 7.x and 8.x on the equality
2027:	* behavior between zero and the empty string, so to be conservative
2028:	* we leave it untouched regardless of the language version */
2029:	if ($context->true()) {
2030:	$trueTypes = [
2031:	new NullType(),
2032:	new ConstantBooleanType(false),
2033:	new ConstantIntegerType(0),
2034:	new ConstantFloatType(0.0),
2035:	new StringType(),
2036:	];
2037:	} else {
2038:	$trueTypes = [
2039:	new NullType(),
2040:	new ConstantBooleanType(false),
2041:	new ConstantIntegerType(0),
2042:	new ConstantFloatType(0.0),
2043:	new ConstantStringType('0'),
2044:	];
2045:	}
2046:	return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
2047:	}
2048:
2049:	if (!$context->null() && $constantType->getValue() === '') {
2050:	/* There is a difference between php 7.x and 8.x on the equality
2051:	* behavior between zero and the empty string, so to be conservative
2052:	* we leave it untouched regardless of the language version */
2053:	if ($context->true()) {
2054:	$trueTypes = [
2055:	new NullType(),
2056:	new ConstantBooleanType(false),
2057:	new ConstantIntegerType(0),
2058:	new ConstantFloatType(0.0),
2059:	new ConstantStringType(''),
2060:	];
2061:	} else {
2062:	$trueTypes = [
2063:	new NullType(),
2064:	new ConstantBooleanType(false),
2065:	new ConstantStringType(''),
2066:	];
2067:	}
2068:	return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
2069:	}
2070:
2071:	if (
2072:	$exprNode instanceof FuncCall
2073:	&& $exprNode->name instanceof Name
2074:	&& in_array(strtolower($exprNode->name->toString()), ['gettype', 'get_class', 'get_debug_type'], true)
2075:	&& isset($exprNode->getArgs()[0])
2076:	&& $constantType->isString()->yes()
2077:	) {
2078:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
2079:	}
2080:
2081:	if (
2082:	$context->true()
2083:	&& $exprNode instanceof FuncCall
2084:	&& $exprNode->name instanceof Name
2085:	&& $exprNode->name->toLowerString() === 'preg_match'
2086:	&& (new ConstantIntegerType(1))->isSuperTypeOf($constantType)->yes()
2087:	) {
2088:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
2089:	}
2090:	}
2091:
2092:	$leftType = $scope->getType($expr->left);
2093:	$rightType = $scope->getType($expr->right);
2094:
2095:	$leftBooleanType = $leftType->toBoolean();
2096:	if ($leftBooleanType instanceof ConstantBooleanType && $rightType->isBoolean()->yes()) {
2097:	return $this->specifyTypesInCondition(
2098:	$scope,
2099:	new Expr\BinaryOp\Identical(
2100:	new ConstFetch(new Name($leftBooleanType->getValue() ? 'true' : 'false')),
2101:	$expr->right,
2102:	),
2103:	$context,
2104:	)->setRootExpr($expr);
2105:	}
2106:
2107:	$rightBooleanType = $rightType->toBoolean();
2108:	if ($rightBooleanType instanceof ConstantBooleanType && $leftType->isBoolean()->yes()) {
2109:	return $this->specifyTypesInCondition(
2110:	$scope,
2111:	new Expr\BinaryOp\Identical(
2112:	$expr->left,
2113:	new ConstFetch(new Name($rightBooleanType->getValue() ? 'true' : 'false')),
2114:	),
2115:	$context,
2116:	)->setRootExpr($expr);
2117:	}
2118:
2119:	if (
2120:	!$context->null()
2121:	&& $rightType->isArray()->yes()
2122:	&& $leftType->isConstantArray()->yes() && $leftType->isIterableAtLeastOnce()->no()
2123:	) {
2124:	return $this->create($expr->right, new NonEmptyArrayType(), $context->negate(), $scope)->setRootExpr($expr);
2125:	}
2126:
2127:	if (
2128:	!$context->null()
2129:	&& $leftType->isArray()->yes()
2130:	&& $rightType->isConstantArray()->yes() && $rightType->isIterableAtLeastOnce()->no()
2131:	) {
2132:	return $this->create($expr->left, new NonEmptyArrayType(), $context->negate(), $scope)->setRootExpr($expr);
2133:	}
2134:
2135:	if (
2136:	($leftType->isString()->yes() && $rightType->isString()->yes())
2137:	\|\| ($leftType->isInteger()->yes() && $rightType->isInteger()->yes())
2138:	\|\| ($leftType->isFloat()->yes() && $rightType->isFloat()->yes())
2139:	\|\| ($leftType->isEnum()->yes() && $rightType->isEnum()->yes())
2140:	) {
2141:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
2142:	}
2143:
2144:	$leftExprString = $this->exprPrinter->printExpr($expr->left);
2145:	$rightExprString = $this->exprPrinter->printExpr($expr->right);
2146:	if ($leftExprString === $rightExprString) {
2147:	if (!$expr->left instanceof Expr\Variable \|\| !$expr->right instanceof Expr\Variable) {
2148:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
2149:	}
2150:	}
2151:
2152:	$leftTypes = $this->create($expr->left, $leftType, $context, $scope)->setRootExpr($expr);
2153:	$rightTypes = $this->create($expr->right, $rightType, $context, $scope)->setRootExpr($expr);
2154:
2155:	return $context->true()
2156:	? $leftTypes->unionWith($rightTypes)
2157:	: $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($scope));
2158:	}
2159:
2160:	public function resolveIdentical(Expr\BinaryOp\Identical $expr, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
2161:	{
2162:	// Normalize to: fn() === expr
2163:	$leftExpr = $expr->left;
2164:	$rightExpr = $expr->right;
2165:	if ($rightExpr instanceof FuncCall && !$leftExpr instanceof FuncCall) {
2166:	[$leftExpr, $rightExpr] = [$rightExpr, $leftExpr];
2167:	}
2168:
2169:	$unwrappedLeftExpr = $leftExpr;
2170:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2171:	$unwrappedLeftExpr = $leftExpr->getExpr();
2172:	}
2173:	$unwrappedRightExpr = $rightExpr;
2174:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2175:	$unwrappedRightExpr = $rightExpr->getExpr();
2176:	}
2177:
2178:	$rightType = $scope->getType($rightExpr);
2179:
2180:	// (count($a) === $b)
2181:	if (
2182:	!$context->null()
2183:	&& $unwrappedLeftExpr instanceof FuncCall
2184:	&& count($unwrappedLeftExpr->getArgs()) >= 1
2185:	&& $unwrappedLeftExpr->name instanceof Name
2186:	&& in_array(strtolower((string) $unwrappedLeftExpr->name), ['count', 'sizeof'], true)
2187:	&& $rightType->isInteger()->yes()
2188:	) {
2189:	if (IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($rightType)->yes()) {
2190:	return $this->create($unwrappedLeftExpr->getArgs()[0]->value, new NeverType(), $context, $scope)->setRootExpr($expr);
2191:	}
2192:
2193:	$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
2194:	$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($rightType);
2195:	if ($isZero->yes()) {
2196:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2197:
2198:	if ($context->truthy() && !$argType->isArray()->yes()) {
2199:	$newArgType = new UnionType([
2200:	new ObjectType(Countable::class),
2201:	new ConstantArrayType([], []),
2202:	]);
2203:	} else {
2204:	$newArgType = new ConstantArrayType([], []);
2205:	}
2206:
2207:	return $funcTypes->unionWith(
2208:	$this->create($unwrappedLeftExpr->getArgs()[0]->value, $newArgType, $context, $scope)->setRootExpr($expr),
2209:	);
2210:	}
2211:
2212:	$specifiedTypes = $this->specifyTypesForCountFuncCall($unwrappedLeftExpr, $argType, $rightType, $context, $scope, $expr);
2213:	if ($specifiedTypes !== null) {
2214:	return $specifiedTypes;
2215:	}
2216:
2217:	if ($context->truthy() && $argType->isArray()->yes()) {
2218:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2219:	if (IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($rightType)->yes()) {
2220:	return $funcTypes->unionWith(
2221:	$this->create($unwrappedLeftExpr->getArgs()[0]->value, new NonEmptyArrayType(), $context, $scope)->setRootExpr($expr),
2222:	);
2223:	}
2224:
2225:	return $funcTypes;
2226:	}
2227:	}
2228:
2229:	// strlen($a) === $b
2230:	if (
2231:	!$context->null()
2232:	&& $unwrappedLeftExpr instanceof FuncCall
2233:	&& count($unwrappedLeftExpr->getArgs()) === 1
2234:	&& $unwrappedLeftExpr->name instanceof Name
2235:	&& in_array(strtolower((string) $unwrappedLeftExpr->name), ['strlen', 'mb_strlen'], true)
2236:	&& $rightType->isInteger()->yes()
2237:	) {
2238:	if (IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($rightType)->yes()) {
2239:	return $this->create($unwrappedLeftExpr->getArgs()[0]->value, new NeverType(), $context, $scope)->setRootExpr($expr);
2240:	}
2241:
2242:	$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($rightType);
2243:	if ($isZero->yes()) {
2244:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2245:	return $funcTypes->unionWith(
2246:	$this->create($unwrappedLeftExpr->getArgs()[0]->value, new ConstantStringType(''), $context, $scope)->setRootExpr($expr),
2247:	);
2248:	}
2249:
2250:	if ($context->truthy() && IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($rightType)->yes()) {
2251:	$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
2252:	if ($argType->isString()->yes()) {
2253:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2254:
2255:	$accessory = new AccessoryNonEmptyStringType();
2256:	if (IntegerRangeType::fromInterval(2, null)->isSuperTypeOf($rightType)->yes()) {
2257:	$accessory = new AccessoryNonFalsyStringType();
2258:	}
2259:	$valueTypes = $this->create($unwrappedLeftExpr->getArgs()[0]->value, $accessory, $context, $scope)->setRootExpr($expr);
2260:
2261:	return $funcTypes->unionWith($valueTypes);
2262:	}
2263:	}
2264:	}
2265:
2266:	// preg_match($a) === $b
2267:	if (
2268:	$context->true()
2269:	&& $unwrappedLeftExpr instanceof FuncCall
2270:	&& $unwrappedLeftExpr->name instanceof Name
2271:	&& $unwrappedLeftExpr->name->toLowerString() === 'preg_match'
2272:	&& (new ConstantIntegerType(1))->isSuperTypeOf($rightType)->yes()
2273:	) {
2274:	return $this->specifyTypesInCondition(
2275:	$scope,
2276:	$leftExpr,
2277:	$context,
2278:	)->setRootExpr($expr);
2279:	}
2280:
2281:	// get_class($a) === 'Foo'
2282:	if (
2283:	$context->true()
2284:	&& $unwrappedLeftExpr instanceof FuncCall
2285:	&& $unwrappedLeftExpr->name instanceof Name
2286:	&& in_array(strtolower($unwrappedLeftExpr->name->toString()), ['get_class', 'get_debug_type'], true)
2287:	&& isset($unwrappedLeftExpr->getArgs()[0])
2288:	) {
2289:	if ($rightType instanceof ConstantStringType && $this->reflectionProvider->hasClass($rightType->getValue())) {
2290:	return $this->create(
2291:	$unwrappedLeftExpr->getArgs()[0]->value,
2292:	new ObjectType($rightType->getValue(), classReflection: $this->reflectionProvider->getClass($rightType->getValue())->asFinal()),
2293:	$context,
2294:	$scope,
2295:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2296:	}
2297:	if ($rightType->getClassStringObjectType()->isObject()->yes()) {
2298:	return $this->create(
2299:	$unwrappedLeftExpr->getArgs()[0]->value,
2300:	$rightType->getClassStringObjectType(),
2301:	$context,
2302:	$scope,
2303:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2304:	}
2305:	}
2306:
2307:	if (
2308:	$context->truthy()
2309:	&& $unwrappedLeftExpr instanceof FuncCall
2310:	&& $unwrappedLeftExpr->name instanceof Name
2311:	&& in_array(strtolower($unwrappedLeftExpr->name->toString()), [
2312:	'substr', 'strstr', 'stristr', 'strchr', 'strrchr', 'strtolower', 'strtoupper', 'ucfirst', 'lcfirst',
2313:	'mb_substr', 'mb_strstr', 'mb_stristr', 'mb_strchr', 'mb_strrchr', 'mb_strtolower', 'mb_strtoupper', 'mb_ucfirst', 'mb_lcfirst',
2314:	'ucwords', 'mb_convert_case', 'mb_convert_kana',
2315:	], true)
2316:	&& isset($unwrappedLeftExpr->getArgs()[0])
2317:	&& $rightType->isNonEmptyString()->yes()
2318:	) {
2319:	$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
2320:
2321:	if ($argType->isString()->yes()) {
2322:	if ($rightType->isNonFalsyString()->yes()) {
2323:	return $this->create(
2324:	$unwrappedLeftExpr->getArgs()[0]->value,
2325:	TypeCombinator::intersect($argType, new AccessoryNonFalsyStringType()),
2326:	$context,
2327:	$scope,
2328:	)->setRootExpr($expr);
2329:	}
2330:
2331:	return $this->create(
2332:	$unwrappedLeftExpr->getArgs()[0]->value,
2333:	TypeCombinator::intersect($argType, new AccessoryNonEmptyStringType()),
2334:	$context,
2335:	$scope,
2336:	)->setRootExpr($expr);
2337:	}
2338:	}
2339:
2340:	if ($rightType->isString()->yes()) {
2341:	$types = null;
2342:	foreach ($rightType->getConstantStrings() as $constantString) {
2343:	$specifiedType = $this->specifyTypesForConstantStringBinaryExpression($unwrappedLeftExpr, $constantString, $context, $scope, $expr);
2344:
2345:	if ($specifiedType === null) {
2346:	continue;
2347:	}
2348:	if ($types === null) {
2349:	$types = $specifiedType;
2350:	continue;
2351:	}
2352:
2353:	$types = $types->intersectWith($specifiedType);
2354:	}
2355:
2356:	if ($types !== null) {
2357:	if ($leftExpr !== $unwrappedLeftExpr) {
2358:	$types = $types->unionWith($this->create($leftExpr, $rightType, $context, $scope)->setRootExpr($expr));
2359:	}
2360:	return $types;
2361:	}
2362:	}
2363:
2364:	$expressions = $this->findTypeExpressionsFromBinaryOperation($scope, $expr);
2365:	if ($expressions !== null) {
2366:	$exprNode = $expressions[0];
2367:	$constantType = $expressions[1];
2368:
2369:	$unwrappedExprNode = $exprNode;
2370:	if ($exprNode instanceof AlwaysRememberedExpr) {
2371:	$unwrappedExprNode = $exprNode->getExpr();
2372:	}
2373:
2374:	$specifiedType = $this->specifyTypesForConstantBinaryExpression($unwrappedExprNode, $constantType, $context, $scope, $expr);
2375:	if ($specifiedType !== null) {
2376:	if ($exprNode !== $unwrappedExprNode) {
2377:	$specifiedType = $specifiedType->unionWith(
2378:	$this->create($exprNode, $constantType, $context, $scope)->setRootExpr($expr),
2379:	);
2380:	}
2381:	return $specifiedType;
2382:	}
2383:	}
2384:
2385:	// $a::class === 'Foo'
2386:	if (
2387:	$context->true() &&
2388:	$unwrappedLeftExpr instanceof ClassConstFetch &&
2389:	$unwrappedLeftExpr->class instanceof Expr &&
2390:	$unwrappedLeftExpr->name instanceof Node\Identifier &&
2391:	$unwrappedRightExpr instanceof ClassConstFetch &&
2392:	$rightType instanceof ConstantStringType &&
2393:	$rightType->getValue() !== '' &&
2394:	strtolower($unwrappedLeftExpr->name->toString()) === 'class'
2395:	) {
2396:	if ($this->reflectionProvider->hasClass($rightType->getValue())) {
2397:	return $this->create(
2398:	$unwrappedLeftExpr->class,
2399:	new ObjectType($rightType->getValue(), classReflection: $this->reflectionProvider->getClass($rightType->getValue())->asFinal()),
2400:	$context,
2401:	$scope,
2402:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2403:	}
2404:	return $this->specifyTypesInCondition(
2405:	$scope,
2406:	new Instanceof_(
2407:	$unwrappedLeftExpr->class,
2408:	new Name($rightType->getValue()),
2409:	),
2410:	$context,
2411:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2412:	}
2413:
2414:	$leftType = $scope->getType($leftExpr);
2415:
2416:	// 'Foo' === $a::class
2417:	if (
2418:	$context->true() &&
2419:	$unwrappedRightExpr instanceof ClassConstFetch &&
2420:	$unwrappedRightExpr->class instanceof Expr &&
2421:	$unwrappedRightExpr->name instanceof Node\Identifier &&
2422:	$unwrappedLeftExpr instanceof ClassConstFetch &&
2423:	$leftType instanceof ConstantStringType &&
2424:	$leftType->getValue() !== '' &&
2425:	strtolower($unwrappedRightExpr->name->toString()) === 'class'
2426:	) {
2427:	if ($this->reflectionProvider->hasClass($leftType->getValue())) {
2428:	return $this->create(
2429:	$unwrappedRightExpr->class,
2430:	new ObjectType($leftType->getValue(), classReflection: $this->reflectionProvider->getClass($leftType->getValue())->asFinal()),
2431:	$context,
2432:	$scope,
2433:	)->unionWith($this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr));
2434:	}
2435:
2436:	return $this->specifyTypesInCondition(
2437:	$scope,
2438:	new Instanceof_(
2439:	$unwrappedRightExpr->class,
2440:	new Name($leftType->getValue()),
2441:	),
2442:	$context,
2443:	)->unionWith($this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr));
2444:	}
2445:
2446:	if ($context->false()) {
2447:	$identicalType = $scope->getType($expr);
2448:	if ($identicalType instanceof ConstantBooleanType) {
2449:	$never = new NeverType();
2450:	$contextForTypes = $identicalType->getValue() ? $context->negate() : $context;
2451:	$leftTypes = $this->create($leftExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
2452:	$rightTypes = $this->create($rightExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
2453:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2454:	$leftTypes = $leftTypes->unionWith(
2455:	$this->create($unwrappedLeftExpr, $never, $contextForTypes, $scope)->setRootExpr($expr),
2456:	);
2457:	}
2458:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2459:	$rightTypes = $rightTypes->unionWith(
2460:	$this->create($unwrappedRightExpr, $never, $contextForTypes, $scope)->setRootExpr($expr),
2461:	);
2462:	}
2463:	return $leftTypes->unionWith($rightTypes);
2464:	}
2465:	}
2466:
2467:	$types = null;
2468:	if (
2469:	count($leftType->getFiniteTypes()) === 1
2470:	\|\| (
2471:	$context->true()
2472:	&& $leftType->isConstantValue()->yes()
2473:	&& !$rightType->equals($leftType)
2474:	&& $rightType->isSuperTypeOf($leftType)->yes())
2475:	) {
2476:	$types = $this->create(
2477:	$rightExpr,
2478:	$leftType,
2479:	$context,
2480:	$scope,
2481:	)->setRootExpr($expr);
2482:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2483:	$types = $types->unionWith($this->create(
2484:	$unwrappedRightExpr,
2485:	$leftType,
2486:	$context,
2487:	$scope,
2488:	))->setRootExpr($expr);
2489:	}
2490:	}
2491:	if (
2492:	count($rightType->getFiniteTypes()) === 1
2493:	\|\| (
2494:	$context->true()
2495:	&& $rightType->isConstantValue()->yes()
2496:	&& !$leftType->equals($rightType)
2497:	&& $leftType->isSuperTypeOf($rightType)->yes()
2498:	)
2499:	) {
2500:	$leftTypes = $this->create(
2501:	$leftExpr,
2502:	$rightType,
2503:	$context,
2504:	$scope,
2505:	)->setRootExpr($expr);
2506:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2507:	$leftTypes = $leftTypes->unionWith($this->create(
2508:	$unwrappedLeftExpr,
2509:	$rightType,
2510:	$context,
2511:	$scope,
2512:	))->setRootExpr($expr);
2513:	}
2514:	if ($types !== null) {
2515:	$types = $types->unionWith($leftTypes);
2516:	} else {
2517:	$types = $leftTypes;
2518:	}
2519:	}
2520:
2521:	if ($types !== null) {
2522:	return $types;
2523:	}
2524:
2525:	$leftExprString = $this->exprPrinter->printExpr($unwrappedLeftExpr);
2526:	$rightExprString = $this->exprPrinter->printExpr($unwrappedRightExpr);
2527:	if ($leftExprString === $rightExprString) {
2528:	if (!$unwrappedLeftExpr instanceof Expr\Variable \|\| !$unwrappedRightExpr instanceof Expr\Variable) {
2529:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
2530:	}
2531:	}
2532:
2533:	if ($context->true()) {
2534:	$leftTypes = $this->create($leftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2535:	$rightTypes = $this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr);
2536:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2537:	$leftTypes = $leftTypes->unionWith(
2538:	$this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr),
2539:	);
2540:	}
2541:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2542:	$rightTypes = $rightTypes->unionWith(
2543:	$this->create($unwrappedRightExpr, $leftType, $context, $scope)->setRootExpr($expr),
2544:	);
2545:	}
2546:	return $leftTypes->unionWith($rightTypes);
2547:	} elseif ($context->false()) {
2548:	return $this->create($leftExpr, $leftType, $context, $scope)->setRootExpr($expr)->normalize($scope)
2549:	->intersectWith($this->create($rightExpr, $rightType, $context, $scope)->setRootExpr($expr)->normalize($scope));
2550:	}
2551:
2552:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
2553:	}
2554:
2555:	}
2556:

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