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\Expr\TypeExpr;
25:	use PHPStan\Node\IssetExpr;
26:	use PHPStan\Node\Printer\ExprPrinter;
27:	use PHPStan\Php\PhpVersion;
28:	use PHPStan\Reflection\Assertions;
29:	use PHPStan\Reflection\ExtendedParametersAcceptor;
30:	use PHPStan\Reflection\ParametersAcceptor;
31:	use PHPStan\Reflection\ParametersAcceptorSelector;
32:	use PHPStan\Reflection\ReflectionProvider;
33:	use PHPStan\Reflection\ResolvedFunctionVariant;
34:	use PHPStan\Rules\Arrays\AllowedArrayKeysTypes;
35:	use PHPStan\ShouldNotHappenException;
36:	use PHPStan\TrinaryLogic;
37:	use PHPStan\Type\Accessory\AccessoryArrayListType;
38:	use PHPStan\Type\Accessory\AccessoryLowercaseStringType;
39:	use PHPStan\Type\Accessory\AccessoryNonEmptyStringType;
40:	use PHPStan\Type\Accessory\AccessoryNonFalsyStringType;
41:	use PHPStan\Type\Accessory\AccessoryUppercaseStringType;
42:	use PHPStan\Type\Accessory\HasOffsetType;
43:	use PHPStan\Type\Accessory\HasPropertyType;
44:	use PHPStan\Type\Accessory\NonEmptyArrayType;
45:	use PHPStan\Type\ArrayType;
46:	use PHPStan\Type\BooleanType;
47:	use PHPStan\Type\ConditionalTypeForParameter;
48:	use PHPStan\Type\Constant\ConstantArrayType;
49:	use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
50:	use PHPStan\Type\Constant\ConstantBooleanType;
51:	use PHPStan\Type\Constant\ConstantFloatType;
52:	use PHPStan\Type\Constant\ConstantIntegerType;
53:	use PHPStan\Type\Constant\ConstantStringType;
54:	use PHPStan\Type\ConstantScalarType;
55:	use PHPStan\Type\FloatType;
56:	use PHPStan\Type\FunctionTypeSpecifyingExtension;
57:	use PHPStan\Type\Generic\GenericClassStringType;
58:	use PHPStan\Type\Generic\TemplateType;
59:	use PHPStan\Type\Generic\TemplateTypeHelper;
60:	use PHPStan\Type\Generic\TemplateTypeVariance;
61:	use PHPStan\Type\Generic\TemplateTypeVarianceMap;
62:	use PHPStan\Type\IntegerRangeType;
63:	use PHPStan\Type\IntegerType;
64:	use PHPStan\Type\IntersectionType;
65:	use PHPStan\Type\MethodTypeSpecifyingExtension;
66:	use PHPStan\Type\MixedType;
67:	use PHPStan\Type\NeverType;
68:	use PHPStan\Type\NonexistentParentClassType;
69:	use PHPStan\Type\NullType;
70:	use PHPStan\Type\ObjectType;
71:	use PHPStan\Type\ObjectWithoutClassType;
72:	use PHPStan\Type\ResourceType;
73:	use PHPStan\Type\StaticMethodTypeSpecifyingExtension;
74:	use PHPStan\Type\StaticType;
75:	use PHPStan\Type\StaticTypeFactory;
76:	use PHPStan\Type\StringType;
77:	use PHPStan\Type\Type;
78:	use PHPStan\Type\TypeCombinator;
79:	use PHPStan\Type\TypeTraverser;
80:	use PHPStan\Type\UnionType;
81:	use function array_key_exists;
82:	use function array_last;
83:	use function array_map;
84:	use function array_merge;
85:	use function array_reverse;
86:	use function array_shift;
87:	use function count;
88:	use function in_array;
89:	use function is_string;
90:	use function strtolower;
91:	use function substr;
92:	use const COUNT_NORMAL;
93:
94:	#[AutowiredService(name: 'typeSpecifier', factory: '@typeSpecifierFactory::create')]
95:	final class TypeSpecifier
96:	{
97:
98:	/** @var MethodTypeSpecifyingExtension[][]\|null */
99:	private ?array $methodTypeSpecifyingExtensionsByClass = null;
100:
101:	/** @var StaticMethodTypeSpecifyingExtension[][]\|null */
102:	private ?array $staticMethodTypeSpecifyingExtensionsByClass = null;
103:
104:	/**
105:	* @param FunctionTypeSpecifyingExtension[] $functionTypeSpecifyingExtensions
106:	* @param MethodTypeSpecifyingExtension[] $methodTypeSpecifyingExtensions
107:	* @param StaticMethodTypeSpecifyingExtension[] $staticMethodTypeSpecifyingExtensions
108:	*/
109:	public function __construct(
110:	private ExprPrinter $exprPrinter,
111:	private ReflectionProvider $reflectionProvider,
112:	private PhpVersion $phpVersion,
113:	private array $functionTypeSpecifyingExtensions,
114:	private array $methodTypeSpecifyingExtensions,
115:	private array $staticMethodTypeSpecifyingExtensions,
116:	private bool $rememberPossiblyImpureFunctionValues,
117:	)
118:	{
119:	}
120:
121:	/**
122:	* @api
123:	*/
124:	public function specifyTypesInCondition(
125:	Scope $scope,
126:	Expr $expr,
127:	TypeSpecifierContext $context,
128:	): SpecifiedTypes
129:	{
130:	if ($expr instanceof Expr\CallLike && $expr->isFirstClassCallable()) {
131:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
132:	}
133:
134:	if ($expr instanceof Instanceof_) {
135:	$exprNode = $expr->expr;
136:	if ($expr->class instanceof Name) {
137:	$className = (string) $expr->class;
138:	$lowercasedClassName = strtolower($className);
139:	if ($lowercasedClassName === 'self' && $scope->isInClass()) {
140:	$type = new ObjectType($scope->getClassReflection()->getName());
141:	} elseif ($lowercasedClassName === 'static' && $scope->isInClass()) {
142:	$type = new StaticType($scope->getClassReflection());
143:	} elseif ($lowercasedClassName === 'parent') {
144:	if (
145:	$scope->isInClass()
146:	&& $scope->getClassReflection()->getParentClass() !== null
147:	) {
148:	$type = new ObjectType($scope->getClassReflection()->getParentClass()->getName());
149:	} else {
150:	$type = new NonexistentParentClassType();
151:	}
152:	} else {
153:	$type = new ObjectType($className);
154:	}
155:	return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
156:	}
157:
158:	$classType = $scope->getType($expr->class);
159:	$uncertainty = false;
160:	$type = TypeTraverser::map($classType, static function (Type $type, callable $traverse) use (&$uncertainty): Type {
161:	if ($type instanceof UnionType \|\| $type instanceof IntersectionType) {
162:	return $traverse($type);
163:	}
164:	if ($type->getObjectClassNames() !== []) {
165:	$uncertainty = true;
166:	return $type;
167:	}
168:	if ($type instanceof GenericClassStringType) {
169:	$uncertainty = true;
170:	return $type->getGenericType();
171:	}
172:	if ($type instanceof ConstantStringType) {
173:	return new ObjectType($type->getValue());
174:	}
175:	return new MixedType();
176:	});
177:
178:	if (!$type->isSuperTypeOf(new MixedType())->yes()) {
179:	if ($context->true()) {
180:	$type = TypeCombinator::intersect(
181:	$type,
182:	new ObjectWithoutClassType(),
183:	);
184:	return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
185:	} elseif ($context->false() && !$uncertainty) {
186:	$exprType = $scope->getType($expr->expr);
187:	if (!$type->isSuperTypeOf($exprType)->yes()) {
188:	return $this->create($exprNode, $type, $context, $scope)->setRootExpr($expr);
189:	}
190:	}
191:	}
192:	if ($context->true()) {
193:	return $this->create($exprNode, new ObjectWithoutClassType(), $context, $scope)->setRootExpr($exprNode);
194:	}
195:	} elseif ($expr instanceof Node\Expr\BinaryOp\Identical) {
196:	return $this->resolveIdentical($expr, $scope, $context);
197:
198:	} elseif ($expr instanceof Node\Expr\BinaryOp\NotIdentical) {
199:	return $this->specifyTypesInCondition(
200:	$scope,
201:	new Node\Expr\BooleanNot(new Node\Expr\BinaryOp\Identical($expr->left, $expr->right)),
202:	$context,
203:	)->setRootExpr($expr);
204:	} elseif ($expr instanceof Expr\Cast\Bool_) {
205:	return $this->specifyTypesInCondition(
206:	$scope,
207:	new Node\Expr\BinaryOp\Equal($expr->expr, new ConstFetch(new Name\FullyQualified('true'))),
208:	$context,
209:	)->setRootExpr($expr);
210:	} elseif ($expr instanceof Expr\Cast\String_) {
211:	return $this->specifyTypesInCondition(
212:	$scope,
213:	new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\String_('')),
214:	$context,
215:	)->setRootExpr($expr);
216:	} elseif ($expr instanceof Expr\Cast\Int_) {
217:	return $this->specifyTypesInCondition(
218:	$scope,
219:	new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\LNumber(0)),
220:	$context,
221:	)->setRootExpr($expr);
222:	} elseif ($expr instanceof Expr\Cast\Double) {
223:	return $this->specifyTypesInCondition(
224:	$scope,
225:	new Node\Expr\BinaryOp\NotEqual($expr->expr, new Node\Scalar\DNumber(0.0)),
226:	$context,
227:	)->setRootExpr($expr);
228:	} elseif ($expr instanceof Node\Expr\BinaryOp\Equal) {
229:	return $this->resolveEqual($expr, $scope, $context);
230:	} elseif ($expr instanceof Node\Expr\BinaryOp\NotEqual) {
231:	return $this->specifyTypesInCondition(
232:	$scope,
233:	new Node\Expr\BooleanNot(new Node\Expr\BinaryOp\Equal($expr->left, $expr->right)),
234:	$context,
235:	)->setRootExpr($expr);
236:
237:	} elseif ($expr instanceof Node\Expr\BinaryOp\Smaller \|\| $expr instanceof Node\Expr\BinaryOp\SmallerOrEqual) {
238:
239:	if (
240:	$expr->left instanceof FuncCall
241:	&& $expr->left->name instanceof Name
242:	&& in_array(strtolower((string) $expr->left->name), ['count', 'sizeof', 'strlen', 'mb_strlen', 'preg_match'], true)
243:	&& count($expr->left->getArgs()) >= 1
244:	&& (
245:	!$expr->right instanceof FuncCall
246:	\|\| !$expr->right->name instanceof Name
247:	\|\| !in_array(strtolower((string) $expr->right->name), ['count', 'sizeof', 'strlen', 'mb_strlen', 'preg_match'], true)
248:	)
249:	) {
250:	$inverseOperator = $expr instanceof Node\Expr\BinaryOp\Smaller
251:	? new Node\Expr\BinaryOp\SmallerOrEqual($expr->right, $expr->left)
252:	: new Node\Expr\BinaryOp\Smaller($expr->right, $expr->left);
253:
254:	return $this->specifyTypesInCondition(
255:	$scope,
256:	new Node\Expr\BooleanNot($inverseOperator),
257:	$context,
258:	)->setRootExpr($expr);
259:	}
260:
261:	$orEqual = $expr instanceof Node\Expr\BinaryOp\SmallerOrEqual;
262:	$offset = $orEqual ? 0 : 1;
263:	$leftType = $scope->getType($expr->left);
264:	$result = (new SpecifiedTypes([], []))->setRootExpr($expr);
265:
266:	if (
267:	!$context->null()
268:	&& $expr->right instanceof FuncCall
269:	&& $expr->right->name instanceof Name
270:	&& in_array(strtolower((string) $expr->right->name), ['count', 'sizeof'], true)
271:	&& count($expr->right->getArgs()) >= 1
272:	&& $leftType->isInteger()->yes()
273:	) {
274:	$argType = $scope->getType($expr->right->getArgs()[0]->value);
275:
276:	if ($leftType instanceof ConstantIntegerType) {
277:	if ($orEqual) {
278:	$sizeType = IntegerRangeType::createAllGreaterThanOrEqualTo($leftType->getValue());
279:	} else {
280:	$sizeType = IntegerRangeType::createAllGreaterThan($leftType->getValue());
281:	}
282:	} elseif ($leftType instanceof IntegerRangeType) {
283:	$sizeType = $leftType->shift($offset);
284:	} else {
285:	$sizeType = $leftType;
286:	}
287:
288:	$specifiedTypes = $this->specifyTypesForCountFuncCall($expr->right, $argType, $sizeType, $context, $scope, $expr);
289:	if ($specifiedTypes !== null) {
290:	$result = $result->unionWith($specifiedTypes);
291:	}
292:
293:	if (
294:	$context->true() && (IntegerRangeType::createAllGreaterThanOrEqualTo(1 - $offset)->isSuperTypeOf($leftType)->yes())
295:	\|\| ($context->false() && (new ConstantIntegerType(1 - $offset))->isSuperTypeOf($leftType)->yes())
296:	) {
297:	if ($context->truthy() && $argType->isArray()->maybe()) {
298:	$countables = [];
299:	if ($argType instanceof UnionType) {
300:	$countableInterface = new ObjectType(Countable::class);
301:	foreach ($argType->getTypes() as $innerType) {
302:	if ($innerType->isArray()->yes()) {
303:	$innerType = TypeCombinator::intersect(new NonEmptyArrayType(), $innerType);
304:	$countables[] = $innerType;
305:	}
306:
307:	if (!$countableInterface->isSuperTypeOf($innerType)->yes()) {
308:	continue;
309:	}
310:
311:	$countables[] = $innerType;
312:	}
313:	}
314:
315:	if (count($countables) > 0) {
316:	$countableType = TypeCombinator::union(...$countables);
317:
318:	return $this->create($expr->right->getArgs()[0]->value, $countableType, $context, $scope)->setRootExpr($expr);
319:	}
320:	}
321:
322:	if ($argType->isArray()->yes()) {
323:	$newType = new NonEmptyArrayType();
324:	if ($context->true() && $argType->isList()->yes()) {
325:	$newType = TypeCombinator::intersect($newType, new AccessoryArrayListType());
326:	}
327:
328:	$result = $result->unionWith(
329:	$this->create($expr->right->getArgs()[0]->value, $newType, $context, $scope)->setRootExpr($expr),
330:	);
331:	}
332:	}
333:	}
334:
335:	if (
336:	!$context->null()
337:	&& $expr->right instanceof FuncCall
338:	&& $expr->right->name instanceof Name
339:	&& in_array(strtolower((string) $expr->right->name), ['preg_match'], true)
340:	&& count($expr->right->getArgs()) >= 3
341:	&& (
342:	IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($leftType)->yes()
343:	\|\| ($expr instanceof Expr\BinaryOp\Smaller && IntegerRangeType::fromInterval(0, null)->isSuperTypeOf($leftType)->yes())
344:	)
345:	) {
346:	// 0 < preg_match or 1 <= preg_match becomes 1 === preg_match
347:	$newExpr = new Expr\BinaryOp\Identical($expr->right, new Node\Scalar\Int_(1));
348:
349:	return $this->specifyTypesInCondition($scope, $newExpr, $context)->setRootExpr($expr);
350:	}
351:
352:	if (
353:	!$context->null()
354:	&& $expr->right instanceof FuncCall
355:	&& $expr->right->name instanceof Name
356:	&& in_array(strtolower((string) $expr->right->name), ['strlen', 'mb_strlen'], true)
357:	&& count($expr->right->getArgs()) === 1
358:	&& $leftType->isInteger()->yes()
359:	) {
360:	if (
361:	$context->true() && (IntegerRangeType::createAllGreaterThanOrEqualTo(1 - $offset)->isSuperTypeOf($leftType)->yes())
362:	\|\| ($context->false() && (new ConstantIntegerType(1 - $offset))->isSuperTypeOf($leftType)->yes())
363:	) {
364:	$argType = $scope->getType($expr->right->getArgs()[0]->value);
365:	if ($argType->isString()->yes()) {
366:	$accessory = new AccessoryNonEmptyStringType();
367:
368:	if (IntegerRangeType::createAllGreaterThanOrEqualTo(2 - $offset)->isSuperTypeOf($leftType)->yes()) {
369:	$accessory = new AccessoryNonFalsyStringType();
370:	}
371:
372:	$result = $result->unionWith($this->create($expr->right->getArgs()[0]->value, $accessory, $context, $scope)->setRootExpr($expr));
373:	}
374:	}
375:	}
376:
377:	if ($leftType instanceof ConstantIntegerType) {
378:	if ($expr->right instanceof Expr\PostInc) {
379:	$result = $result->unionWith($this->createRangeTypes(
380:	$expr,
381:	$expr->right->var,
382:	IntegerRangeType::fromInterval($leftType->getValue(), null, $offset + 1),
383:	$context,
384:	));
385:	} elseif ($expr->right instanceof Expr\PostDec) {
386:	$result = $result->unionWith($this->createRangeTypes(
387:	$expr,
388:	$expr->right->var,
389:	IntegerRangeType::fromInterval($leftType->getValue(), null, $offset - 1),
390:	$context,
391:	));
392:	} elseif ($expr->right instanceof Expr\PreInc \|\| $expr->right instanceof Expr\PreDec) {
393:	$result = $result->unionWith($this->createRangeTypes(
394:	$expr,
395:	$expr->right->var,
396:	IntegerRangeType::fromInterval($leftType->getValue(), null, $offset),
397:	$context,
398:	));
399:	}
400:	}
401:
402:	$rightType = $scope->getType($expr->right);
403:	if ($rightType instanceof ConstantIntegerType) {
404:	if ($expr->left instanceof Expr\PostInc) {
405:	$result = $result->unionWith($this->createRangeTypes(
406:	$expr,
407:	$expr->left->var,
408:	IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset + 1),
409:	$context,
410:	));
411:	} elseif ($expr->left instanceof Expr\PostDec) {
412:	$result = $result->unionWith($this->createRangeTypes(
413:	$expr,
414:	$expr->left->var,
415:	IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset - 1),
416:	$context,
417:	));
418:	} elseif ($expr->left instanceof Expr\PreInc \|\| $expr->left instanceof Expr\PreDec) {
419:	$result = $result->unionWith($this->createRangeTypes(
420:	$expr,
421:	$expr->left->var,
422:	IntegerRangeType::fromInterval(null, $rightType->getValue(), -$offset),
423:	$context,
424:	));
425:	}
426:	}
427:
428:	if ($context->true()) {
429:	if (!$expr->left instanceof Node\Scalar) {
430:	$result = $result->unionWith(
431:	$this->create(
432:	$expr->left,
433:	$orEqual ? $rightType->getSmallerOrEqualType($this->phpVersion) : $rightType->getSmallerType($this->phpVersion),
434:	TypeSpecifierContext::createTruthy(),
435:	$scope,
436:	)->setRootExpr($expr),
437:	);
438:	}
439:	if (!$expr->right instanceof Node\Scalar) {
440:	$result = $result->unionWith(
441:	$this->create(
442:	$expr->right,
443:	$orEqual ? $leftType->getGreaterOrEqualType($this->phpVersion) : $leftType->getGreaterType($this->phpVersion),
444:	TypeSpecifierContext::createTruthy(),
445:	$scope,
446:	)->setRootExpr($expr),
447:	);
448:	}
449:	} elseif ($context->false()) {
450:	if (!$expr->left instanceof Node\Scalar) {
451:	$result = $result->unionWith(
452:	$this->create(
453:	$expr->left,
454:	$orEqual ? $rightType->getGreaterType($this->phpVersion) : $rightType->getGreaterOrEqualType($this->phpVersion),
455:	TypeSpecifierContext::createTruthy(),
456:	$scope,
457:	)->setRootExpr($expr),
458:	);
459:	}
460:	if (!$expr->right instanceof Node\Scalar) {
461:	$result = $result->unionWith(
462:	$this->create(
463:	$expr->right,
464:	$orEqual ? $leftType->getSmallerType($this->phpVersion) : $leftType->getSmallerOrEqualType($this->phpVersion),
465:	TypeSpecifierContext::createTruthy(),
466:	$scope,
467:	)->setRootExpr($expr),
468:	);
469:	}
470:	}
471:
472:	return $result;
473:
474:	} elseif ($expr instanceof Node\Expr\BinaryOp\Greater) {
475:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Smaller($expr->right, $expr->left), $context)->setRootExpr($expr);
476:
477:	} elseif ($expr instanceof Node\Expr\BinaryOp\GreaterOrEqual) {
478:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\SmallerOrEqual($expr->right, $expr->left), $context)->setRootExpr($expr);
479:
480:	} elseif ($expr instanceof FuncCall && $expr->name instanceof Name) {
481:	if ($this->reflectionProvider->hasFunction($expr->name, $scope)) {
482:	// lazy create parametersAcceptor, as creation can be expensive
483:	$parametersAcceptor = null;
484:
485:	$functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
486:	$normalizedExpr = $expr;
487:	$args = $expr->getArgs();
488:	if (count($args) > 0) {
489:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $args, $functionReflection->getVariants(), $functionReflection->getNamedArgumentsVariants());
490:	$normalizedExpr = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $expr) ?? $expr;
491:	}
492:
493:	foreach ($this->getFunctionTypeSpecifyingExtensions() as $extension) {
494:	if (!$extension->isFunctionSupported($functionReflection, $normalizedExpr, $context)) {
495:	continue;
496:	}
497:
498:	return $extension->specifyTypes($functionReflection, $normalizedExpr, $scope, $context);
499:	}
500:
501:	if (count($args) > 0) {
502:	$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
503:	if ($specifiedTypes !== null) {
504:	return $specifiedTypes;
505:	}
506:	}
507:
508:	$assertions = $functionReflection->getAsserts();
509:	if ($assertions->getAll() !== []) {
510:	$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $args, $functionReflection->getVariants(), $functionReflection->getNamedArgumentsVariants());
511:
512:	$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
513:	$type,
514:	$parametersAcceptor->getResolvedTemplateTypeMap(),
515:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
516:	TemplateTypeVariance::createInvariant(),
517:	));
518:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
519:	if ($specifiedTypes !== null) {
520:	return $specifiedTypes;
521:	}
522:	}
523:	}
524:
525:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
526:	} elseif ($expr instanceof MethodCall && $expr->name instanceof Node\Identifier) {
527:	$methodCalledOnType = $scope->getType($expr->var);
528:	$methodReflection = $scope->getMethodReflection($methodCalledOnType, $expr->name->name);
529:	if ($methodReflection !== null) {
530:	// lazy create parametersAcceptor, as creation can be expensive
531:	$parametersAcceptor = null;
532:
533:	$normalizedExpr = $expr;
534:	$args = $expr->getArgs();
535:	if (count($args) > 0) {
536:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $args, $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
537:	$normalizedExpr = ArgumentsNormalizer::reorderMethodArguments($parametersAcceptor, $expr) ?? $expr;
538:	}
539:
540:	$referencedClasses = $methodCalledOnType->getObjectClassNames();
541:	if (
542:	count($referencedClasses) === 1
543:	&& $this->reflectionProvider->hasClass($referencedClasses[0])
544:	) {
545:	$methodClassReflection = $this->reflectionProvider->getClass($referencedClasses[0]);
546:	foreach ($this->getMethodTypeSpecifyingExtensionsForClass($methodClassReflection->getName()) as $extension) {
547:	if (!$extension->isMethodSupported($methodReflection, $normalizedExpr, $context)) {
548:	continue;
549:	}
550:
551:	return $extension->specifyTypes($methodReflection, $normalizedExpr, $scope, $context);
552:	}
553:	}
554:
555:	if (count($args) > 0) {
556:	$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
557:	if ($specifiedTypes !== null) {
558:	return $specifiedTypes;
559:	}
560:	}
561:
562:	$assertions = $methodReflection->getAsserts();
563:	if ($assertions->getAll() !== []) {
564:	$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $args, $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
565:
566:	$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
567:	$type,
568:	$parametersAcceptor->getResolvedTemplateTypeMap(),
569:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
570:	TemplateTypeVariance::createInvariant(),
571:	));
572:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
573:	if ($specifiedTypes !== null) {
574:	return $specifiedTypes;
575:	}
576:	}
577:	}
578:
579:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
580:	} elseif ($expr instanceof StaticCall && $expr->name instanceof Node\Identifier) {
581:	if ($expr->class instanceof Name) {
582:	$calleeType = $scope->resolveTypeByName($expr->class);
583:	} else {
584:	$calleeType = $scope->getType($expr->class);
585:	}
586:
587:	$staticMethodReflection = $scope->getMethodReflection($calleeType, $expr->name->name);
588:	if ($staticMethodReflection !== null) {
589:	// lazy create parametersAcceptor, as creation can be expensive
590:	$parametersAcceptor = null;
591:
592:	$normalizedExpr = $expr;
593:	$args = $expr->getArgs();
594:	if (count($args) > 0) {
595:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $args, $staticMethodReflection->getVariants(), $staticMethodReflection->getNamedArgumentsVariants());
596:	$normalizedExpr = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $expr) ?? $expr;
597:	}
598:
599:	$referencedClasses = $calleeType->getObjectClassNames();
600:	if (
601:	count($referencedClasses) === 1
602:	&& $this->reflectionProvider->hasClass($referencedClasses[0])
603:	) {
604:	$staticMethodClassReflection = $this->reflectionProvider->getClass($referencedClasses[0]);
605:	foreach ($this->getStaticMethodTypeSpecifyingExtensionsForClass($staticMethodClassReflection->getName()) as $extension) {
606:	if (!$extension->isStaticMethodSupported($staticMethodReflection, $normalizedExpr, $context)) {
607:	continue;
608:	}
609:
610:	return $extension->specifyTypes($staticMethodReflection, $normalizedExpr, $scope, $context);
611:	}
612:	}
613:
614:	if (count($args) > 0) {
615:	$specifiedTypes = $this->specifyTypesFromConditionalReturnType($context, $expr, $parametersAcceptor, $scope);
616:	if ($specifiedTypes !== null) {
617:	return $specifiedTypes;
618:	}
619:	}
620:
621:	$assertions = $staticMethodReflection->getAsserts();
622:	if ($assertions->getAll() !== []) {
623:	$parametersAcceptor ??= ParametersAcceptorSelector::selectFromArgs($scope, $args, $staticMethodReflection->getVariants(), $staticMethodReflection->getNamedArgumentsVariants());
624:
625:	$asserts = $assertions->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
626:	$type,
627:	$parametersAcceptor->getResolvedTemplateTypeMap(),
628:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
629:	TemplateTypeVariance::createInvariant(),
630:	));
631:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
632:	if ($specifiedTypes !== null) {
633:	return $specifiedTypes;
634:	}
635:	}
636:	}
637:
638:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
639:	} elseif ($expr instanceof BooleanAnd \|\| $expr instanceof LogicalAnd) {
640:	if (!$scope instanceof MutatingScope) {
641:	throw new ShouldNotHappenException();
642:	}
643:	$leftTypes = $this->specifyTypesInCondition($scope, $expr->left, $context)->setRootExpr($expr);
644:	$rightScope = $scope->filterByTruthyValue($expr->left);
645:	$rightTypes = $this->specifyTypesInCondition($rightScope, $expr->right, $context)->setRootExpr($expr);
646:	$types = $context->true() ? $leftTypes->unionWith($rightTypes) : $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($rightScope));
647:	if ($context->false()) {
648:	return (new SpecifiedTypes(
649:	$types->getSureTypes(),
650:	$types->getSureNotTypes(),
651:	))->setNewConditionalExpressionHolders(array_merge(
652:	$this->processBooleanNotSureConditionalTypes($scope, $leftTypes, $rightTypes),
653:	$this->processBooleanNotSureConditionalTypes($scope, $rightTypes, $leftTypes),
654:	$this->processBooleanSureConditionalTypes($scope, $leftTypes, $rightTypes),
655:	$this->processBooleanSureConditionalTypes($scope, $rightTypes, $leftTypes),
656:	))->setRootExpr($expr);
657:	}
658:
659:	return $types;
660:	} elseif ($expr instanceof BooleanOr \|\| $expr instanceof LogicalOr) {
661:	if (!$scope instanceof MutatingScope) {
662:	throw new ShouldNotHappenException();
663:	}
664:	$leftTypes = $this->specifyTypesInCondition($scope, $expr->left, $context)->setRootExpr($expr);
665:	$rightScope = $scope->filterByFalseyValue($expr->left);
666:	$rightTypes = $this->specifyTypesInCondition($rightScope, $expr->right, $context)->setRootExpr($expr);
667:
668:	if ($context->true()) {
669:	if (
670:	$scope->getType($expr->left)->toBoolean()->isFalse()->yes()
671:	) {
672:	$types = $rightTypes->normalize($rightScope);
673:	} elseif (
674:	$scope->getType($expr->left)->toBoolean()->isTrue()->yes()
675:	\|\| $scope->getType($expr->right)->toBoolean()->isFalse()->yes()
676:	) {
677:	$types = $leftTypes->normalize($scope);
678:	} else {
679:	$types = $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($rightScope));
680:	}
681:	} else {
682:	$types = $leftTypes->unionWith($rightTypes);
683:	}
684:
685:	if ($context->true()) {
686:	return (new SpecifiedTypes(
687:	$types->getSureTypes(),
688:	$types->getSureNotTypes(),
689:	))->setNewConditionalExpressionHolders(array_merge(
690:	$this->processBooleanNotSureConditionalTypes($scope, $leftTypes, $rightTypes),
691:	$this->processBooleanNotSureConditionalTypes($scope, $rightTypes, $leftTypes),
692:	$this->processBooleanSureConditionalTypes($scope, $leftTypes, $rightTypes),
693:	$this->processBooleanSureConditionalTypes($scope, $rightTypes, $leftTypes),
694:	))->setRootExpr($expr);
695:	}
696:
697:	return $types;
698:	} elseif ($expr instanceof Node\Expr\BooleanNot && !$context->null()) {
699:	return $this->specifyTypesInCondition($scope, $expr->expr, $context->negate())->setRootExpr($expr);
700:	} elseif ($expr instanceof Node\Expr\Assign) {
701:	if (!$scope instanceof MutatingScope) {
702:	throw new ShouldNotHappenException();
703:	}
704:
705:	if ($context->null()) {
706:	$specifiedTypes = $this->specifyTypesInCondition($scope->exitFirstLevelStatements(), $expr->expr, $context)->setRootExpr($expr);
707:
708:	// infer $arr[$key] after $key = array_rand($arr)
709:	if (
710:	$expr->expr instanceof FuncCall
711:	&& $expr->expr->name instanceof Name
712:	&& in_array($expr->expr->name->toLowerString(), ['array_rand'], true)
713:	&& count($expr->expr->getArgs()) >= 1
714:	) {
715:	$numArg = null;
716:	$args = $expr->expr->getArgs();
717:	$arrayArg = $args[0]->value;
718:	if (count($args) > 1) {
719:	$numArg = $args[1]->value;
720:	}
721:	$one = new ConstantIntegerType(1);
722:	$arrayType = $scope->getType($arrayArg);
723:
724:	if (
725:	$arrayType->isArray()->yes()
726:	&& $arrayType->isIterableAtLeastOnce()->yes()
727:	&& ($numArg === null \|\| $one->isSuperTypeOf($scope->getType($numArg))->yes())
728:	) {
729:	$dimFetch = new ArrayDimFetch($arrayArg, $expr->var);
730:
731:	return $specifiedTypes->unionWith(
732:	$this->create($dimFetch, $arrayType->getIterableValueType(), TypeSpecifierContext::createTrue(), $scope),
733:	);
734:	}
735:	}
736:
737:	// infer $arr[$key] after $key = array_key_first/last($arr)
738:	if (
739:	$expr->expr instanceof FuncCall
740:	&& $expr->expr->name instanceof Name
741:	&& in_array($expr->expr->name->toLowerString(), ['array_key_first', 'array_key_last'], true)
742:	&& count($expr->expr->getArgs()) >= 1
743:	) {
744:	$arrayArg = $expr->expr->getArgs()[0]->value;
745:	$arrayType = $scope->getType($arrayArg);
746:	if (
747:	$arrayType->isArray()->yes()
748:	&& $arrayType->isIterableAtLeastOnce()->yes()
749:	) {
750:	$dimFetch = new ArrayDimFetch($arrayArg, $expr->var);
751:	$iterableValueType = $expr->expr->name->toLowerString() === 'array_key_first'
752:	? $arrayType->getIterableValueType()
753:	: $arrayType->getIterableValueType();
754:
755:	return $specifiedTypes->unionWith(
756:	$this->create($dimFetch, $iterableValueType, TypeSpecifierContext::createTrue(), $scope),
757:	);
758:	}
759:	}
760:
761:	// infer $list[$count] after $count = count($list) - 1
762:	if (
763:	$expr->expr instanceof Expr\BinaryOp\Minus
764:	&& $expr->expr->left instanceof FuncCall
765:	&& $expr->expr->left->name instanceof Name
766:	&& $expr->expr->right instanceof Node\Scalar\Int_
767:	&& $expr->expr->right->value === 1
768:	&& in_array($expr->expr->left->name->toLowerString(), ['count', 'sizeof'], true)
769:	&& count($expr->expr->left->getArgs()) >= 1
770:	) {
771:	$arrayArg = $expr->expr->left->getArgs()[0]->value;
772:	$arrayType = $scope->getType($arrayArg);
773:	if (
774:	$arrayType->isList()->yes()
775:	&& $arrayType->isIterableAtLeastOnce()->yes()
776:	) {
777:	$dimFetch = new ArrayDimFetch($arrayArg, $expr->var);
778:
779:	return $specifiedTypes->unionWith(
780:	$this->create($dimFetch, $arrayType->getIterableValueType(), TypeSpecifierContext::createTrue(), $scope),
781:	);
782:	}
783:	}
784:
785:	return $specifiedTypes;
786:	}
787:
788:	$specifiedTypes = $this->specifyTypesInCondition($scope->exitFirstLevelStatements(), $expr->var, $context)->setRootExpr($expr);
789:
790:	if ($context->true()) {
791:	// infer $arr[$key] after $key = array_search($needle, $arr)
792:	if (
793:	$expr->expr instanceof FuncCall
794:	&& $expr->expr->name instanceof Name
795:	&& $expr->expr->name->toLowerString() === 'array_search'
796:	&& count($expr->expr->getArgs()) >= 2
797:	) {
798:	$arrayArg = $expr->expr->getArgs()[1]->value;
799:	$arrayType = $scope->getType($arrayArg);
800:
801:	if ($arrayType->isArray()->yes()) {
802:	$dimFetch = new ArrayDimFetch($arrayArg, $expr->var);
803:	$iterableValueType = $arrayType->getIterableValueType();
804:
805:	return $specifiedTypes->unionWith(
806:	$this->create($dimFetch, $iterableValueType, TypeSpecifierContext::createTrue(), $scope),
807:	);
808:	}
809:	}
810:	}
811:	return $specifiedTypes;
812:	} elseif (
813:	$expr instanceof Expr\Isset_
814:	&& count($expr->vars) > 0
815:	&& !$context->null()
816:	) {
817:	// rewrite multi param isset() to and-chained single param isset()
818:	if (count($expr->vars) > 1) {
819:	$issets = [];
820:	foreach ($expr->vars as $var) {
821:	$issets[] = new Expr\Isset_([$var], $expr->getAttributes());
822:	}
823:
824:	$first = array_shift($issets);
825:	$andChain = null;
826:	foreach ($issets as $isset) {
827:	if ($andChain === null) {
828:	$andChain = new BooleanAnd($first, $isset);
829:	continue;
830:	}
831:
832:	$andChain = new BooleanAnd($andChain, $isset);
833:	}
834:
835:	if ($andChain === null) {
836:	throw new ShouldNotHappenException();
837:	}
838:
839:	return $this->specifyTypesInCondition($scope, $andChain, $context)->setRootExpr($expr);
840:	}
841:
842:	$issetExpr = $expr->vars[0];
843:
844:	if (!$context->true()) {
845:	if (!$scope instanceof MutatingScope) {
846:	throw new ShouldNotHappenException();
847:	}
848:
849:	$isset = $scope->issetCheck($issetExpr, static fn () => true);
850:
851:	if ($isset === false) {
852:	return new SpecifiedTypes();
853:	}
854:
855:	$type = $scope->getType($issetExpr);
856:	$isNullable = !$type->isNull()->no();
857:	$exprType = $this->create(
858:	$issetExpr,
859:	new NullType(),
860:	$context->negate(),
861:	$scope,
862:	)->setRootExpr($expr);
863:
864:	if ($issetExpr instanceof Expr\Variable && is_string($issetExpr->name)) {
865:	if ($isset === true) {
866:	if ($isNullable) {
867:	return $exprType;
868:	}
869:
870:	// variable cannot exist in !isset()
871:	return $exprType->unionWith($this->create(
872:	new IssetExpr($issetExpr),
873:	new NullType(),
874:	$context,
875:	$scope,
876:	))->setRootExpr($expr);
877:	}
878:
879:	if ($isNullable) {
880:	// reduces variable certainty to maybe
881:	return $exprType->unionWith($this->create(
882:	new IssetExpr($issetExpr),
883:	new NullType(),
884:	$context->negate(),
885:	$scope,
886:	))->setRootExpr($expr);
887:	}
888:
889:	// variable cannot exist in !isset()
890:	return $this->create(
891:	new IssetExpr($issetExpr),
892:	new NullType(),
893:	$context,
894:	$scope,
895:	)->setRootExpr($expr);
896:	}
897:
898:	if ($isNullable && $isset === true) {
899:	return $exprType;
900:	}
901:
902:	return new SpecifiedTypes();
903:	}
904:
905:	$tmpVars = [$issetExpr];
906:	while (
907:	$issetExpr instanceof ArrayDimFetch
908:	\|\| $issetExpr instanceof PropertyFetch
909:	\|\| (
910:	$issetExpr instanceof StaticPropertyFetch
911:	&& $issetExpr->class instanceof Expr
912:	)
913:	) {
914:	if ($issetExpr instanceof StaticPropertyFetch) {
915:	/** @var Expr $issetExpr */
916:	$issetExpr = $issetExpr->class;
917:	} else {
918:	$issetExpr = $issetExpr->var;
919:	}
920:	$tmpVars[] = $issetExpr;
921:	}
922:	$vars = array_reverse($tmpVars);
923:
924:	$types = new SpecifiedTypes();
925:	foreach ($vars as $var) {
926:
927:	if ($var instanceof Expr\Variable && is_string($var->name)) {
928:	if ($scope->hasVariableType($var->name)->no()) {
929:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
930:	}
931:	}
932:
933:	if (
934:	$var instanceof ArrayDimFetch
935:	&& $var->dim !== null
936:	&& !$scope->getType($var->var) instanceof MixedType
937:	) {
938:	$dimType = $scope->getType($var->dim);
939:
940:	if ($dimType instanceof ConstantIntegerType \|\| $dimType instanceof ConstantStringType) {
941:	$types = $types->unionWith(
942:	$this->create(
943:	$var->var,
944:	new HasOffsetType($dimType),
945:	$context,
946:	$scope,
947:	)->setRootExpr($expr),
948:	);
949:	} else {
950:	$varType = $scope->getType($var->var);
951:	$narrowedKey = AllowedArrayKeysTypes::narrowOffsetKeyType($varType, $dimType);
952:	if ($narrowedKey !== null) {
953:	$types = $types->unionWith(
954:	$this->create(
955:	$var->dim,
956:	$narrowedKey,
957:	$context,
958:	$scope,
959:	)->setRootExpr($expr),
960:	);
961:	}
962:	}
963:	}
964:
965:	if (
966:	$var instanceof PropertyFetch
967:	&& $var->name instanceof Node\Identifier
968:	) {
969:	$types = $types->unionWith(
970:	$this->create($var->var, new IntersectionType([
971:	new ObjectWithoutClassType(),
972:	new HasPropertyType($var->name->toString()),
973:	]), TypeSpecifierContext::createTruthy(), $scope)->setRootExpr($expr),
974:	);
975:	} elseif (
976:	$var instanceof StaticPropertyFetch
977:	&& $var->class instanceof Expr
978:	&& $var->name instanceof Node\VarLikeIdentifier
979:	) {
980:	$types = $types->unionWith(
981:	$this->create($var->class, new IntersectionType([
982:	new ObjectWithoutClassType(),
983:	new HasPropertyType($var->name->toString()),
984:	]), TypeSpecifierContext::createTruthy(), $scope)->setRootExpr($expr),
985:	);
986:	}
987:
988:	$types = $types->unionWith(
989:	$this->create($var, new NullType(), TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr),
990:	);
991:	}
992:
993:	return $types;
994:	} elseif (
995:	$expr instanceof Expr\BinaryOp\Coalesce
996:	&& !$context->null()
997:	) {
998:	if (!$context->true()) {
999:	if (!$scope instanceof MutatingScope) {
1000:	throw new ShouldNotHappenException();
1001:	}
1002:
1003:	$isset = $scope->issetCheck($expr->left, static fn () => true);
1004:
1005:	if ($isset !== true) {
1006:	return new SpecifiedTypes();
1007:	}
1008:
1009:	return $this->create(
1010:	$expr->left,
1011:	new NullType(),
1012:	$context->negate(),
1013:	$scope,
1014:	)->setRootExpr($expr);
1015:	}
1016:
1017:	if ((new ConstantBooleanType(false))->isSuperTypeOf($scope->getType($expr->right)->toBoolean())->yes()) {
1018:	return $this->create(
1019:	$expr->left,
1020:	new NullType(),
1021:	TypeSpecifierContext::createFalse(),
1022:	$scope,
1023:	)->setRootExpr($expr);
1024:	}
1025:
1026:	} elseif (
1027:	$expr instanceof Expr\Empty_
1028:	) {
1029:	if (!$scope instanceof MutatingScope) {
1030:	throw new ShouldNotHappenException();
1031:	}
1032:
1033:	$isset = $scope->issetCheck($expr->expr, static fn () => true);
1034:	if ($isset === false) {
1035:	return new SpecifiedTypes();
1036:	}
1037:
1038:	return $this->specifyTypesInCondition($scope, new BooleanOr(
1039:	new Expr\BooleanNot(new Expr\Isset_([$expr->expr])),
1040:	new Expr\BooleanNot($expr->expr),
1041:	), $context)->setRootExpr($expr);
1042:	} elseif ($expr instanceof Expr\ErrorSuppress) {
1043:	return $this->specifyTypesInCondition($scope, $expr->expr, $context)->setRootExpr($expr);
1044:	} elseif (
1045:	$expr instanceof Expr\Ternary
1046:	&& !$context->null()
1047:	&& $scope->getType($expr->else)->isFalse()->yes()
1048:	) {
1049:	$conditionExpr = $expr->cond;
1050:	if ($expr->if !== null) {
1051:	$conditionExpr = new BooleanAnd($conditionExpr, $expr->if);
1052:	}
1053:
1054:	return $this->specifyTypesInCondition($scope, $conditionExpr, $context)->setRootExpr($expr);
1055:
1056:	} elseif ($expr instanceof Expr\NullsafePropertyFetch && !$context->null()) {
1057:	$types = $this->specifyTypesInCondition(
1058:	$scope,
1059:	new BooleanAnd(
1060:	new Expr\BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
1061:	new PropertyFetch($expr->var, $expr->name),
1062:	),
1063:	$context,
1064:	)->setRootExpr($expr);
1065:
1066:	$nullSafeTypes = $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
1067:	return $context->true() ? $types->unionWith($nullSafeTypes) : $types->normalize($scope)->intersectWith($nullSafeTypes->normalize($scope));
1068:	} elseif ($expr instanceof Expr\NullsafeMethodCall && !$context->null()) {
1069:	$types = $this->specifyTypesInCondition(
1070:	$scope,
1071:	new BooleanAnd(
1072:	new Expr\BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
1073:	new MethodCall($expr->var, $expr->name, $expr->args),
1074:	),
1075:	$context,
1076:	)->setRootExpr($expr);
1077:
1078:	$nullSafeTypes = $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
1079:	return $context->true() ? $types->unionWith($nullSafeTypes) : $types->normalize($scope)->intersectWith($nullSafeTypes->normalize($scope));
1080:	} elseif (
1081:	$expr instanceof Expr\New_
1082:	&& $expr->class instanceof Name
1083:	&& $this->reflectionProvider->hasClass($expr->class->toString())
1084:	) {
1085:	$classReflection = $this->reflectionProvider->getClass($expr->class->toString());
1086:
1087:	if ($classReflection->hasConstructor()) {
1088:	$methodReflection = $classReflection->getConstructor();
1089:	$asserts = $methodReflection->getAsserts();
1090:
1091:	if ($asserts->getAll() !== []) {
1092:	$parametersAcceptor = ParametersAcceptorSelector::selectFromArgs($scope, $expr->getArgs(), $methodReflection->getVariants(), $methodReflection->getNamedArgumentsVariants());
1093:
1094:	$asserts = $asserts->mapTypes(static fn (Type $type) => TemplateTypeHelper::resolveTemplateTypes(
1095:	$type,
1096:	$parametersAcceptor->getResolvedTemplateTypeMap(),
1097:	$parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
1098:	TemplateTypeVariance::createInvariant(),
1099:	));
1100:
1101:	$specifiedTypes = $this->specifyTypesFromAsserts($context, $expr, $asserts, $parametersAcceptor, $scope);
1102:
1103:	if ($specifiedTypes !== null) {
1104:	return $specifiedTypes;
1105:	}
1106:	}
1107:	}
1108:	} elseif (!$context->null()) {
1109:	return $this->handleDefaultTruthyOrFalseyContext($context, $expr, $scope);
1110:	}
1111:
1112:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1113:	}
1114:
1115:	private function specifyTypesForCountFuncCall(
1116:	FuncCall $countFuncCall,
1117:	Type $type,
1118:	Type $sizeType,
1119:	TypeSpecifierContext $context,
1120:	Scope $scope,
1121:	Expr $rootExpr,
1122:	): ?SpecifiedTypes
1123:	{
1124:	if (count($countFuncCall->getArgs()) === 1) {
1125:	$isNormalCount = TrinaryLogic::createYes();
1126:	} else {
1127:	$mode = $scope->getType($countFuncCall->getArgs()[1]->value);
1128:	$isNormalCount = (new ConstantIntegerType(COUNT_NORMAL))->isSuperTypeOf($mode)->result->or($type->getIterableValueType()->isArray()->negate());
1129:	}
1130:
1131:	$isConstantArray = $type->isConstantArray();
1132:	$isList = $type->isList();
1133:	$oneOrMore = IntegerRangeType::fromInterval(1, null);
1134:	if (
1135:	!$isNormalCount->yes()
1136:	\|\| (!$isConstantArray->yes() && !$isList->yes())
1137:	\|\| !$oneOrMore->isSuperTypeOf($sizeType)->yes()
1138:	\|\| $sizeType->isSuperTypeOf($type->getArraySize())->yes()
1139:	) {
1140:	return null;
1141:	}
1142:
1143:	$resultTypes = [];
1144:	foreach ($type->getArrays() as $arrayType) {
1145:	$isSizeSuperTypeOfArraySize = $sizeType->isSuperTypeOf($arrayType->getArraySize());
1146:	if ($isSizeSuperTypeOfArraySize->no()) {
1147:	continue;
1148:	}
1149:
1150:	if ($context->falsey() && $isSizeSuperTypeOfArraySize->maybe()) {
1151:	continue;
1152:	}
1153:
1154:	if (
1155:	$sizeType instanceof ConstantIntegerType
1156:	&& $sizeType->getValue() < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT
1157:	&& $isList->yes()
1158:	&& $arrayType->getKeyType()->isSuperTypeOf(IntegerRangeType::fromInterval(0, $sizeType->getValue() - 1))->yes()
1159:	) {
1160:	// turn optional offsets non-optional
1161:	$valueTypesBuilder = ConstantArrayTypeBuilder::createEmpty();
1162:	for ($i = 0; $i < $sizeType->getValue(); $i++) {
1163:	$offsetType = new ConstantIntegerType($i);
1164:	$valueTypesBuilder->setOffsetValueType($offsetType, $arrayType->getOffsetValueType($offsetType));
1165:	}
1166:	$resultTypes[] = $valueTypesBuilder->getArray();
1167:	continue;
1168:	}
1169:
1170:	if (
1171:	$sizeType instanceof IntegerRangeType
1172:	&& $sizeType->getMin() !== null
1173:	&& $sizeType->getMin() < ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT
1174:	&& $isList->yes()
1175:	&& $arrayType->getKeyType()->isSuperTypeOf(IntegerRangeType::fromInterval(0, ($sizeType->getMax() ?? $sizeType->getMin()) - 1))->yes()
1176:	) {
1177:	$builderData = [];
1178:	// turn optional offsets non-optional
1179:	for ($i = 0; $i < $sizeType->getMin(); $i++) {
1180:	$offsetType = new ConstantIntegerType($i);
1181:	$builderData[] = [$offsetType, $arrayType->getOffsetValueType($offsetType), false];
1182:	}
1183:	if ($sizeType->getMax() !== null) {
1184:	if ($sizeType->getMax() - $sizeType->getMin() > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
1185:	$resultTypes[] = $arrayType;
1186:	continue;
1187:	}
1188:	for ($i = $sizeType->getMin(); $i < $sizeType->getMax(); $i++) {
1189:	$offsetType = new ConstantIntegerType($i);
1190:	$builderData[] = [$offsetType, $arrayType->getOffsetValueType($offsetType), true];
1191:	}
1192:	} elseif ($arrayType->isConstantArray()->yes()) {
1193:	for ($i = $sizeType->getMin();; $i++) {
1194:	$offsetType = new ConstantIntegerType($i);
1195:	$hasOffset = $arrayType->hasOffsetValueType($offsetType);
1196:	if ($hasOffset->no()) {
1197:	break;
1198:	}
1199:	$builderData[] = [$offsetType, $arrayType->getOffsetValueType($offsetType), !$hasOffset->yes()];
1200:	}
1201:	} else {
1202:	$resultTypes[] = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
1203:	continue;
1204:	}
1205:
1206:	if (count($builderData) > ConstantArrayTypeBuilder::ARRAY_COUNT_LIMIT) {
1207:	$resultTypes[] = $arrayType;
1208:	continue;
1209:	}
1210:
1211:	$builder = ConstantArrayTypeBuilder::createEmpty();
1212:	foreach ($builderData as [$offsetType, $valueType, $optional]) {
1213:	$builder->setOffsetValueType($offsetType, $valueType, $optional);
1214:	}
1215:
1216:	$resultTypes[] = $builder->getArray();
1217:	continue;
1218:	}
1219:
1220:	$resultTypes[] = TypeCombinator::intersect($arrayType, new NonEmptyArrayType());
1221:	}
1222:
1223:	return $this->create($countFuncCall->getArgs()[0]->value, TypeCombinator::union(...$resultTypes), $context, $scope)->setRootExpr($rootExpr);
1224:	}
1225:
1226:	private function specifyTypesForConstantBinaryExpression(
1227:	Expr $exprNode,
1228:	Type $constantType,
1229:	TypeSpecifierContext $context,
1230:	Scope $scope,
1231:	Expr $rootExpr,
1232:	): ?SpecifiedTypes
1233:	{
1234:	if (!$context->null() && $constantType->isFalse()->yes()) {
1235:	$types = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
1236:	if (!$context->true() && ($exprNode instanceof Expr\NullsafeMethodCall \|\| $exprNode instanceof Expr\NullsafePropertyFetch)) {
1237:	return $types;
1238:	}
1239:
1240:	return $types->unionWith($this->specifyTypesInCondition(
1241:	$scope,
1242:	$exprNode,
1243:	$context->true() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createFalse()->negate(),
1244:	)->setRootExpr($rootExpr));
1245:	}
1246:
1247:	if (!$context->null() && $constantType->isTrue()->yes()) {
1248:	$types = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
1249:	if (!$context->true() && ($exprNode instanceof Expr\NullsafeMethodCall \|\| $exprNode instanceof Expr\NullsafePropertyFetch)) {
1250:	return $types;
1251:	}
1252:
1253:	return $types->unionWith($this->specifyTypesInCondition(
1254:	$scope,
1255:	$exprNode,
1256:	$context->true() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createTrue()->negate(),
1257:	)->setRootExpr($rootExpr));
1258:	}
1259:
1260:	return null;
1261:	}
1262:
1263:	private function specifyTypesForConstantStringBinaryExpression(
1264:	Expr $exprNode,
1265:	Type $constantType,
1266:	TypeSpecifierContext $context,
1267:	Scope $scope,
1268:	Expr $rootExpr,
1269:	): ?SpecifiedTypes
1270:	{
1271:	$scalarValues = $constantType->getConstantScalarValues();
1272:	if (count($scalarValues) !== 1 \|\| !is_string($scalarValues[0])) {
1273:	return null;
1274:	}
1275:	$constantStringValue = $scalarValues[0];
1276:
1277:	if (
1278:	$exprNode instanceof FuncCall
1279:	&& $exprNode->name instanceof Name
1280:	&& strtolower($exprNode->name->toString()) === 'gettype'
1281:	&& isset($exprNode->getArgs()[0])
1282:	) {
1283:	$type = null;
1284:	if ($constantStringValue === 'string') {
1285:	$type = new StringType();
1286:	}
1287:	if ($constantStringValue === 'array') {
1288:	$type = new ArrayType(new MixedType(), new MixedType());
1289:	}
1290:	if ($constantStringValue === 'boolean') {
1291:	$type = new BooleanType();
1292:	}
1293:	if (in_array($constantStringValue, ['resource', 'resource (closed)'], true)) {
1294:	$type = new ResourceType();
1295:	}
1296:	if ($constantStringValue === 'integer') {
1297:	$type = new IntegerType();
1298:	}
1299:	if ($constantStringValue === 'double') {
1300:	$type = new FloatType();
1301:	}
1302:	if ($constantStringValue === 'NULL') {
1303:	$type = new NullType();
1304:	}
1305:	if ($constantStringValue === 'object') {
1306:	$type = new ObjectWithoutClassType();
1307:	}
1308:
1309:	if ($type !== null) {
1310:	$callType = $this->create($exprNode, $constantType, $context, $scope)->setRootExpr($rootExpr);
1311:	$argType = $this->create($exprNode->getArgs()[0]->value, $type, $context, $scope)->setRootExpr($rootExpr);
1312:	return $callType->unionWith($argType);
1313:	}
1314:	}
1315:
1316:	if (
1317:	$context->true()
1318:	&& $exprNode instanceof FuncCall
1319:	&& $exprNode->name instanceof Name
1320:	&& strtolower((string) $exprNode->name) === 'get_parent_class'
1321:	&& isset($exprNode->getArgs()[0])
1322:	) {
1323:	$argType = $scope->getType($exprNode->getArgs()[0]->value);
1324:	$objectType = new ObjectType($constantStringValue);
1325:	$classStringType = new GenericClassStringType($objectType);
1326:
1327:	if ($argType->isString()->yes()) {
1328:	return $this->create(
1329:	$exprNode->getArgs()[0]->value,
1330:	$classStringType,
1331:	$context,
1332:	$scope,
1333:	)->setRootExpr($rootExpr);
1334:	}
1335:
1336:	if ($argType->isObject()->yes()) {
1337:	return $this->create(
1338:	$exprNode->getArgs()[0]->value,
1339:	$objectType,
1340:	$context,
1341:	$scope,
1342:	)->setRootExpr($rootExpr);
1343:	}
1344:
1345:	return $this->create(
1346:	$exprNode->getArgs()[0]->value,
1347:	TypeCombinator::union($objectType, $classStringType),
1348:	$context,
1349:	$scope,
1350:	)->setRootExpr($rootExpr);
1351:	}
1352:
1353:	if (
1354:	$context->false()
1355:	&& $exprNode instanceof FuncCall
1356:	&& $exprNode->name instanceof Name
1357:	&& in_array(strtolower((string) $exprNode->name), [
1358:	'trim', 'ltrim', 'rtrim',
1359:	'mb_trim', 'mb_ltrim', 'mb_rtrim',
1360:	], true)
1361:	&& isset($exprNode->getArgs()[0])
1362:	&& $constantStringValue === ''
1363:	) {
1364:	$argValue = $exprNode->getArgs()[0]->value;
1365:	$argType = $scope->getType($argValue);
1366:	if ($argType->isString()->yes()) {
1367:	return $this->create(
1368:	$argValue,
1369:	new IntersectionType([
1370:	new StringType(),
1371:	new AccessoryNonEmptyStringType(),
1372:	]),
1373:	$context->negate(),
1374:	$scope,
1375:	)->setRootExpr($rootExpr);
1376:	}
1377:	}
1378:
1379:	return null;
1380:	}
1381:
1382:	private function handleDefaultTruthyOrFalseyContext(TypeSpecifierContext $context, Expr $expr, Scope $scope): SpecifiedTypes
1383:	{
1384:	if ($context->null()) {
1385:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1386:	}
1387:	if (!$context->truthy()) {
1388:	$type = StaticTypeFactory::truthy();
1389:	return $this->create($expr, $type, TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr);
1390:	} elseif (!$context->falsey()) {
1391:	$type = StaticTypeFactory::falsey();
1392:	return $this->create($expr, $type, TypeSpecifierContext::createFalse(), $scope)->setRootExpr($expr);
1393:	}
1394:
1395:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1396:	}
1397:
1398:	private function specifyTypesFromConditionalReturnType(
1399:	TypeSpecifierContext $context,
1400:	Expr\CallLike $call,
1401:	ParametersAcceptor $parametersAcceptor,
1402:	Scope $scope,
1403:	): ?SpecifiedTypes
1404:	{
1405:	if (!$parametersAcceptor instanceof ResolvedFunctionVariant) {
1406:	return null;
1407:	}
1408:
1409:	$returnType = $parametersAcceptor->getOriginalParametersAcceptor()->getReturnType();
1410:	if (!$returnType instanceof ConditionalTypeForParameter) {
1411:	return null;
1412:	}
1413:
1414:	if ($context->true()) {
1415:	$leftType = new ConstantBooleanType(true);
1416:	$rightType = new ConstantBooleanType(false);
1417:	} elseif ($context->false()) {
1418:	$leftType = new ConstantBooleanType(false);
1419:	$rightType = new ConstantBooleanType(true);
1420:	} elseif ($context->null()) {
1421:	$leftType = new MixedType();
1422:	$rightType = new NeverType();
1423:	} else {
1424:	return null;
1425:	}
1426:
1427:	$argsMap = [];
1428:	$parameters = $parametersAcceptor->getParameters();
1429:	foreach ($call->getArgs() as $i => $arg) {
1430:	if ($arg->unpack) {
1431:	continue;
1432:	}
1433:
1434:	if ($arg->name !== null) {
1435:	$paramName = $arg->name->toString();
1436:	} elseif (isset($parameters[$i])) {
1437:	$paramName = $parameters[$i]->getName();
1438:	} else {
1439:	continue;
1440:	}
1441:
1442:	$argsMap['$' . $paramName] = $arg->value;
1443:	}
1444:
1445:	return $this->getConditionalSpecifiedTypes($returnType, $leftType, $rightType, $scope, $argsMap);
1446:	}
1447:
1448:	/**
1449:	* @param array<string, Expr> $argsMap
1450:	*/
1451:	private function getConditionalSpecifiedTypes(
1452:	ConditionalTypeForParameter $conditionalType,
1453:	Type $leftType,
1454:	Type $rightType,
1455:	Scope $scope,
1456:	array $argsMap,
1457:	): ?SpecifiedTypes
1458:	{
1459:	$parameterName = $conditionalType->getParameterName();
1460:	if (!array_key_exists($parameterName, $argsMap)) {
1461:	return null;
1462:	}
1463:
1464:	$targetType = $conditionalType->getTarget();
1465:	$ifType = $conditionalType->getIf();
1466:	$elseType = $conditionalType->getElse();
1467:
1468:	if ($leftType->isSuperTypeOf($ifType)->yes() && $rightType->isSuperTypeOf($elseType)->yes()) {
1469:	$context = $conditionalType->isNegated() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createTrue();
1470:	} elseif ($leftType->isSuperTypeOf($elseType)->yes() && $rightType->isSuperTypeOf($ifType)->yes()) {
1471:	$context = $conditionalType->isNegated() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createFalse();
1472:	} else {
1473:	return null;
1474:	}
1475:
1476:	$specifiedTypes = $this->create(
1477:	$argsMap[$parameterName],
1478:	$targetType,
1479:	$context,
1480:	$scope,
1481:	);
1482:
1483:	if ($targetType instanceof ConstantBooleanType) {
1484:	if (!$targetType->getValue()) {
1485:	$context = $context->negate();
1486:	}
1487:
1488:	$specifiedTypes = $specifiedTypes->unionWith($this->specifyTypesInCondition($scope, $argsMap[$parameterName], $context));
1489:	}
1490:
1491:	return $specifiedTypes;
1492:	}
1493:
1494:	private function specifyTypesFromAsserts(TypeSpecifierContext $context, Expr\CallLike $call, Assertions $assertions, ParametersAcceptor $parametersAcceptor, Scope $scope): ?SpecifiedTypes
1495:	{
1496:	if ($context->null()) {
1497:	$asserts = $assertions->getAsserts();
1498:	} elseif ($context->true()) {
1499:	$asserts = $assertions->getAssertsIfTrue();
1500:	} elseif ($context->false()) {
1501:	$asserts = $assertions->getAssertsIfFalse();
1502:	} else {
1503:	throw new ShouldNotHappenException();
1504:	}
1505:
1506:	if (count($asserts) === 0) {
1507:	return null;
1508:	}
1509:
1510:	$argsMap = [];
1511:	$parameters = $parametersAcceptor->getParameters();
1512:	foreach ($call->getArgs() as $i => $arg) {
1513:	if ($arg->unpack) {
1514:	continue;
1515:	}
1516:
1517:	if ($arg->name !== null) {
1518:	$paramName = $arg->name->toString();
1519:	} elseif (isset($parameters[$i])) {
1520:	$paramName = $parameters[$i]->getName();
1521:	} elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
1522:	$lastParameter = array_last($parameters);
1523:	$paramName = $lastParameter->getName();
1524:	} else {
1525:	continue;
1526:	}
1527:
1528:	$argsMap[$paramName][] = $arg->value;
1529:	}
1530:	foreach ($parameters as $parameter) {
1531:	$name = $parameter->getName();
1532:	$defaultValue = $parameter->getDefaultValue();
1533:	if (isset($argsMap[$name]) \|\| $defaultValue === null) {
1534:	continue;
1535:	}
1536:	$argsMap[$name][] = new TypeExpr($defaultValue);
1537:	}
1538:
1539:	if ($call instanceof MethodCall) {
1540:	$argsMap['this'] = [$call->var];
1541:	}
1542:
1543:	/** @var SpecifiedTypes\|null $types */
1544:	$types = null;
1545:
1546:	foreach ($asserts as $assert) {
1547:	foreach ($argsMap[substr($assert->getParameter()->getParameterName(), 1)] ?? [] as $parameterExpr) {
1548:	$assertedType = TypeTraverser::map($assert->getType(), static function (Type $type, callable $traverse) use ($argsMap, $scope): Type {
1549:	if ($type instanceof ConditionalTypeForParameter) {
1550:	$parameterName = substr($type->getParameterName(), 1);
1551:	if (array_key_exists($parameterName, $argsMap)) {
1552:	$argType = TypeCombinator::union(...array_map(static fn (Expr $expr) => $scope->getType($expr), $argsMap[$parameterName]));
1553:	$type = $type->toConditional($argType);
1554:	}
1555:	}
1556:
1557:	return $traverse($type);
1558:	});
1559:
1560:	$assertExpr = $assert->getParameter()->getExpr($parameterExpr);
1561:
1562:	$templateTypeMap = $parametersAcceptor->getResolvedTemplateTypeMap();
1563:	$containsUnresolvedTemplate = false;
1564:	TypeTraverser::map(
1565:	$assert->getOriginalType(),
1566:	static function (Type $type, callable $traverse) use ($templateTypeMap, &$containsUnresolvedTemplate) {
1567:	if ($type instanceof TemplateType && $type->getScope()->getClassName() !== null) {
1568:	$resolvedType = $templateTypeMap->getType($type->getName());
1569:	if ($resolvedType === null \|\| $type->getBound()->equals($resolvedType)) {
1570:	$containsUnresolvedTemplate = true;
1571:	return $type;
1572:	}
1573:	}
1574:
1575:	return $traverse($type);
1576:	},
1577:	);
1578:
1579:	$newTypes = $this->create(
1580:	$assertExpr,
1581:	$assertedType,
1582:	$assert->isNegated() ? TypeSpecifierContext::createFalse() : TypeSpecifierContext::createTrue(),
1583:	$scope,
1584:	)->setRootExpr($containsUnresolvedTemplate \|\| $assert->isEquality() ? $call : null);
1585:	$types = $types !== null ? $types->unionWith($newTypes) : $newTypes;
1586:
1587:	if (!$context->null() \|\| !$assertedType instanceof ConstantBooleanType) {
1588:	continue;
1589:	}
1590:
1591:	$subContext = $assertedType->getValue() ? TypeSpecifierContext::createTrue() : TypeSpecifierContext::createFalse();
1592:	if ($assert->isNegated()) {
1593:	$subContext = $subContext->negate();
1594:	}
1595:
1596:	$types = $types->unionWith($this->specifyTypesInCondition(
1597:	$scope,
1598:	$assertExpr,
1599:	$subContext,
1600:	));
1601:	}
1602:	}
1603:
1604:	return $types;
1605:	}
1606:
1607:	/**
1608:	* @return array<string, ConditionalExpressionHolder[]>
1609:	*/
1610:	private function processBooleanSureConditionalTypes(Scope $scope, SpecifiedTypes $leftTypes, SpecifiedTypes $rightTypes): array
1611:	{
1612:	$conditionExpressionTypes = [];
1613:	foreach ($leftTypes->getSureTypes() as $exprString => [$expr, $type]) {
1614:	if (!$expr instanceof Expr\Variable) {
1615:	continue;
1616:	}
1617:	if (!is_string($expr->name)) {
1618:	continue;
1619:	}
1620:
1621:	$conditionExpressionTypes[$exprString] = ExpressionTypeHolder::createYes(
1622:	$expr,
1623:	TypeCombinator::remove($scope->getType($expr), $type),
1624:	);
1625:	}
1626:
1627:	if (count($conditionExpressionTypes) > 0) {
1628:	$holders = [];
1629:	foreach ($rightTypes->getSureTypes() as $exprString => [$expr, $type]) {
1630:	if (!$expr instanceof Expr\Variable) {
1631:	continue;
1632:	}
1633:	if (!is_string($expr->name)) {
1634:	continue;
1635:	}
1636:
1637:	if (!isset($holders[$exprString])) {
1638:	$holders[$exprString] = [];
1639:	}
1640:
1641:	$conditions = $conditionExpressionTypes;
1642:	foreach ($conditions as $conditionExprString => $conditionExprTypeHolder) {
1643:	$conditionExpr = $conditionExprTypeHolder->getExpr();
1644:	if (!$conditionExpr instanceof Expr\Variable) {
1645:	continue;
1646:	}
1647:	if (!is_string($conditionExpr->name)) {
1648:	continue;
1649:	}
1650:	if ($conditionExpr->name !== $expr->name) {
1651:	continue;
1652:	}
1653:
1654:	unset($conditions[$conditionExprString]);
1655:	}
1656:
1657:	if (count($conditions) === 0) {
1658:	continue;
1659:	}
1660:
1661:	$holder = new ConditionalExpressionHolder(
1662:	$conditions,
1663:	ExpressionTypeHolder::createYes($expr, TypeCombinator::intersect($scope->getType($expr), $type)),
1664:	);
1665:	$holders[$exprString][$holder->getKey()] = $holder;
1666:	}
1667:
1668:	return $holders;
1669:	}
1670:
1671:	return [];
1672:	}
1673:
1674:	/**
1675:	* @return array<string, ConditionalExpressionHolder[]>
1676:	*/
1677:	private function processBooleanNotSureConditionalTypes(Scope $scope, SpecifiedTypes $leftTypes, SpecifiedTypes $rightTypes): array
1678:	{
1679:	$conditionExpressionTypes = [];
1680:	foreach ($leftTypes->getSureNotTypes() as $exprString => [$expr, $type]) {
1681:	if (!$expr instanceof Expr\Variable) {
1682:	continue;
1683:	}
1684:	if (!is_string($expr->name)) {
1685:	continue;
1686:	}
1687:
1688:	$conditionExpressionTypes[$exprString] = ExpressionTypeHolder::createYes(
1689:	$expr,
1690:	TypeCombinator::intersect($scope->getType($expr), $type),
1691:	);
1692:	}
1693:
1694:	if (count($conditionExpressionTypes) > 0) {
1695:	$holders = [];
1696:	foreach ($rightTypes->getSureNotTypes() as $exprString => [$expr, $type]) {
1697:	if (!$expr instanceof Expr\Variable) {
1698:	continue;
1699:	}
1700:	if (!is_string($expr->name)) {
1701:	continue;
1702:	}
1703:
1704:	if (!isset($holders[$exprString])) {
1705:	$holders[$exprString] = [];
1706:	}
1707:
1708:	$conditions = $conditionExpressionTypes;
1709:	foreach ($conditions as $conditionExprString => $conditionExprTypeHolder) {
1710:	$conditionExpr = $conditionExprTypeHolder->getExpr();
1711:	if (!$conditionExpr instanceof Expr\Variable) {
1712:	continue;
1713:	}
1714:	if (!is_string($conditionExpr->name)) {
1715:	continue;
1716:	}
1717:	if ($conditionExpr->name !== $expr->name) {
1718:	continue;
1719:	}
1720:
1721:	unset($conditions[$conditionExprString]);
1722:	}
1723:
1724:	if (count($conditions) === 0) {
1725:	continue;
1726:	}
1727:
1728:	$holder = new ConditionalExpressionHolder(
1729:	$conditions,
1730:	ExpressionTypeHolder::createYes($expr, TypeCombinator::remove($scope->getType($expr), $type)),
1731:	);
1732:	$holders[$exprString][$holder->getKey()] = $holder;
1733:	}
1734:
1735:	return $holders;
1736:	}
1737:
1738:	return [];
1739:	}
1740:
1741:	/**
1742:	* @return array{Expr, ConstantScalarType, Type}\|null
1743:	*/
1744:	private function findTypeExpressionsFromBinaryOperation(Scope $scope, Node\Expr\BinaryOp $binaryOperation): ?array
1745:	{
1746:	$leftType = $scope->getType($binaryOperation->left);
1747:	$rightType = $scope->getType($binaryOperation->right);
1748:
1749:	$rightExpr = $binaryOperation->right;
1750:	if ($rightExpr instanceof AlwaysRememberedExpr) {
1751:	$rightExpr = $rightExpr->getExpr();
1752:	}
1753:
1754:	$leftExpr = $binaryOperation->left;
1755:	if ($leftExpr instanceof AlwaysRememberedExpr) {
1756:	$leftExpr = $leftExpr->getExpr();
1757:	}
1758:
1759:	if (
1760:	$leftType instanceof ConstantScalarType
1761:	&& !$rightExpr instanceof ConstFetch
1762:	) {
1763:	return [$binaryOperation->right, $leftType, $rightType];
1764:	} elseif (
1765:	$rightType instanceof ConstantScalarType
1766:	&& !$leftExpr instanceof ConstFetch
1767:	) {
1768:	return [$binaryOperation->left, $rightType, $leftType];
1769:	}
1770:
1771:	return null;
1772:	}
1773:
1774:	/**
1775:	* @api
1776:	*/
1777:	public function create(
1778:	Expr $expr,
1779:	Type $type,
1780:	TypeSpecifierContext $context,
1781:	Scope $scope,
1782:	): SpecifiedTypes
1783:	{
1784:	if ($expr instanceof Instanceof_ \|\| $expr instanceof Expr\List_) {
1785:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
1786:	}
1787:
1788:	$specifiedExprs = [];
1789:	if ($expr instanceof AlwaysRememberedExpr) {
1790:	$specifiedExprs[] = $expr;
1791:	$expr = $expr->expr;
1792:	}
1793:
1794:	if ($expr instanceof Expr\Assign) {
1795:	$specifiedExprs[] = $expr->var;
1796:	$specifiedExprs[] = $expr->expr;
1797:
1798:	while ($expr->expr instanceof Expr\Assign) {
1799:	$specifiedExprs[] = $expr->expr->var;
1800:	$expr = $expr->expr;
1801:	}
1802:	} elseif ($expr instanceof Expr\AssignOp\Coalesce) {
1803:	$specifiedExprs[] = $expr->var;
1804:	} else {
1805:	$specifiedExprs[] = $expr;
1806:	}
1807:
1808:	$types = null;
1809:
1810:	foreach ($specifiedExprs as $specifiedExpr) {
1811:	$newTypes = $this->createForExpr($specifiedExpr, $type, $context, $scope);
1812:
1813:	if ($types === null) {
1814:	$types = $newTypes;
1815:	} else {
1816:	$types = $types->unionWith($newTypes);
1817:	}
1818:	}
1819:
1820:	return $types;
1821:	}
1822:
1823:	private function createForExpr(
1824:	Expr $expr,
1825:	Type $type,
1826:	TypeSpecifierContext $context,
1827:	Scope $scope,
1828:	): SpecifiedTypes
1829:	{
1830:	if ($context->true()) {
1831:	$containsNull = !$type->isNull()->no() && !$scope->getType($expr)->isNull()->no();
1832:	} elseif ($context->false()) {
1833:	$containsNull = !TypeCombinator::containsNull($type) && !$scope->getType($expr)->isNull()->no();
1834:	}
1835:
1836:	$originalExpr = $expr;
1837:	if (isset($containsNull) && !$containsNull) {
1838:	$expr = NullsafeOperatorHelper::getNullsafeShortcircuitedExpr($expr);
1839:	}
1840:
1841:	if (
1842:	!$context->null()
1843:	&& $expr instanceof Expr\BinaryOp\Coalesce
1844:	) {
1845:	if (
1846:	($context->true() && $type->isSuperTypeOf($scope->getType($expr->right))->no())
1847:	\|\| ($context->false() && $type->isSuperTypeOf($scope->getType($expr->right))->yes())
1848:	) {
1849:	$expr = $expr->left;
1850:	}
1851:	}
1852:
1853:	if (
1854:	$expr instanceof FuncCall
1855:	&& $expr->name instanceof Name
1856:	) {
1857:	$has = $this->reflectionProvider->hasFunction($expr->name, $scope);
1858:	if (!$has) {
1859:	// backwards compatibility with previous behaviour
1860:	return new SpecifiedTypes([], []);
1861:	}
1862:
1863:	$functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
1864:	$hasSideEffects = $functionReflection->hasSideEffects();
1865:	if ($hasSideEffects->yes()) {
1866:	return new SpecifiedTypes([], []);
1867:	}
1868:
1869:	if (!$this->rememberPossiblyImpureFunctionValues && !$hasSideEffects->no()) {
1870:	return new SpecifiedTypes([], []);
1871:	}
1872:	}
1873:
1874:	if (
1875:	$expr instanceof MethodCall
1876:	&& $expr->name instanceof Node\Identifier
1877:	) {
1878:	$methodName = $expr->name->toString();
1879:	$calledOnType = $scope->getType($expr->var);
1880:	$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
1881:	if (
1882:	$methodReflection === null
1883:	\|\| $methodReflection->hasSideEffects()->yes()
1884:	\|\| (!$this->rememberPossiblyImpureFunctionValues && !$methodReflection->hasSideEffects()->no())
1885:	) {
1886:	if (isset($containsNull) && !$containsNull) {
1887:	return $this->createNullsafeTypes($originalExpr, $scope, $context, $type);
1888:	}
1889:
1890:	return new SpecifiedTypes([], []);
1891:	}
1892:	}
1893:
1894:	if (
1895:	$expr instanceof StaticCall
1896:	&& $expr->name instanceof Node\Identifier
1897:	) {
1898:	$methodName = $expr->name->toString();
1899:	if ($expr->class instanceof Name) {
1900:	$calledOnType = $scope->resolveTypeByName($expr->class);
1901:	} else {
1902:	$calledOnType = $scope->getType($expr->class);
1903:	}
1904:
1905:	$methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
1906:	if (
1907:	$methodReflection === null
1908:	\|\| $methodReflection->hasSideEffects()->yes()
1909:	\|\| (!$this->rememberPossiblyImpureFunctionValues && !$methodReflection->hasSideEffects()->no())
1910:	) {
1911:	if (isset($containsNull) && !$containsNull) {
1912:	return $this->createNullsafeTypes($originalExpr, $scope, $context, $type);
1913:	}
1914:
1915:	return new SpecifiedTypes([], []);
1916:	}
1917:	}
1918:
1919:	$sureTypes = [];
1920:	$sureNotTypes = [];
1921:	if ($context->false()) {
1922:	$exprString = $this->exprPrinter->printExpr($expr);
1923:	$originalExprString = $this->exprPrinter->printExpr($originalExpr);
1924:
1925:	$sureNotTypes[$exprString] = [$expr, $type];
1926:	if ($exprString !== $originalExprString) {
1927:	$sureNotTypes[$originalExprString] = [$originalExpr, $type];
1928:	}
1929:	} elseif ($context->true()) {
1930:	$exprString = $this->exprPrinter->printExpr($expr);
1931:	$originalExprString = $this->exprPrinter->printExpr($originalExpr);
1932:
1933:	$sureTypes[$exprString] = [$expr, $type];
1934:	if ($exprString !== $originalExprString) {
1935:	$sureTypes[$originalExprString] = [$originalExpr, $type];
1936:	}
1937:	}
1938:
1939:	$types = new SpecifiedTypes($sureTypes, $sureNotTypes);
1940:	if (isset($containsNull) && !$containsNull) {
1941:	return $this->createNullsafeTypes($originalExpr, $scope, $context, $type)->unionWith($types);
1942:	}
1943:
1944:	return $types;
1945:	}
1946:
1947:	private function createNullsafeTypes(Expr $expr, Scope $scope, TypeSpecifierContext $context, ?Type $type): SpecifiedTypes
1948:	{
1949:	if ($expr instanceof Expr\NullsafePropertyFetch) {
1950:	if ($type !== null) {
1951:	$propertyFetchTypes = $this->create(new PropertyFetch($expr->var, $expr->name), $type, $context, $scope);
1952:	} else {
1953:	$propertyFetchTypes = $this->create(new PropertyFetch($expr->var, $expr->name), new NullType(), TypeSpecifierContext::createFalse(), $scope);
1954:	}
1955:
1956:	return $propertyFetchTypes->unionWith(
1957:	$this->create($expr->var, new NullType(), TypeSpecifierContext::createFalse(), $scope),
1958:	);
1959:	}
1960:
1961:	if ($expr instanceof Expr\NullsafeMethodCall) {
1962:	if ($type !== null) {
1963:	$methodCallTypes = $this->create(new MethodCall($expr->var, $expr->name, $expr->args), $type, $context, $scope);
1964:	} else {
1965:	$methodCallTypes = $this->create(new MethodCall($expr->var, $expr->name, $expr->args), new NullType(), TypeSpecifierContext::createFalse(), $scope);
1966:	}
1967:
1968:	return $methodCallTypes->unionWith(
1969:	$this->create($expr->var, new NullType(), TypeSpecifierContext::createFalse(), $scope),
1970:	);
1971:	}
1972:
1973:	if ($expr instanceof Expr\PropertyFetch) {
1974:	return $this->createNullsafeTypes($expr->var, $scope, $context, null);
1975:	}
1976:
1977:	if ($expr instanceof Expr\MethodCall) {
1978:	return $this->createNullsafeTypes($expr->var, $scope, $context, null);
1979:	}
1980:
1981:	if ($expr instanceof Expr\ArrayDimFetch) {
1982:	return $this->createNullsafeTypes($expr->var, $scope, $context, null);
1983:	}
1984:
1985:	if ($expr instanceof Expr\StaticPropertyFetch && $expr->class instanceof Expr) {
1986:	return $this->createNullsafeTypes($expr->class, $scope, $context, null);
1987:	}
1988:
1989:	if ($expr instanceof Expr\StaticCall && $expr->class instanceof Expr) {
1990:	return $this->createNullsafeTypes($expr->class, $scope, $context, null);
1991:	}
1992:
1993:	return new SpecifiedTypes([], []);
1994:	}
1995:
1996:	private function createRangeTypes(?Expr $rootExpr, Expr $expr, Type $type, TypeSpecifierContext $context): SpecifiedTypes
1997:	{
1998:	$sureNotTypes = [];
1999:
2000:	if ($type instanceof IntegerRangeType \|\| $type instanceof ConstantIntegerType) {
2001:	$exprString = $this->exprPrinter->printExpr($expr);
2002:	if ($context->false()) {
2003:	$sureNotTypes[$exprString] = [$expr, $type];
2004:	} elseif ($context->true()) {
2005:	$inverted = TypeCombinator::remove(new IntegerType(), $type);
2006:	$sureNotTypes[$exprString] = [$expr, $inverted];
2007:	}
2008:	}
2009:
2010:	return (new SpecifiedTypes(sureNotTypes: $sureNotTypes))->setRootExpr($rootExpr);
2011:	}
2012:
2013:	/**
2014:	* @return FunctionTypeSpecifyingExtension[]
2015:	*/
2016:	private function getFunctionTypeSpecifyingExtensions(): array
2017:	{
2018:	return $this->functionTypeSpecifyingExtensions;
2019:	}
2020:
2021:	/**
2022:	* @return MethodTypeSpecifyingExtension[]
2023:	*/
2024:	private function getMethodTypeSpecifyingExtensionsForClass(string $className): array
2025:	{
2026:	if ($this->methodTypeSpecifyingExtensionsByClass === null) {
2027:	$byClass = [];
2028:	foreach ($this->methodTypeSpecifyingExtensions as $extension) {
2029:	$byClass[$extension->getClass()][] = $extension;
2030:	}
2031:
2032:	$this->methodTypeSpecifyingExtensionsByClass = $byClass;
2033:	}
2034:	return $this->getTypeSpecifyingExtensionsForType($this->methodTypeSpecifyingExtensionsByClass, $className);
2035:	}
2036:
2037:	/**
2038:	* @return StaticMethodTypeSpecifyingExtension[]
2039:	*/
2040:	private function getStaticMethodTypeSpecifyingExtensionsForClass(string $className): array
2041:	{
2042:	if ($this->staticMethodTypeSpecifyingExtensionsByClass === null) {
2043:	$byClass = [];
2044:	foreach ($this->staticMethodTypeSpecifyingExtensions as $extension) {
2045:	$byClass[$extension->getClass()][] = $extension;
2046:	}
2047:
2048:	$this->staticMethodTypeSpecifyingExtensionsByClass = $byClass;
2049:	}
2050:	return $this->getTypeSpecifyingExtensionsForType($this->staticMethodTypeSpecifyingExtensionsByClass, $className);
2051:	}
2052:
2053:	/**
2054:	* @param MethodTypeSpecifyingExtension[][]\|StaticMethodTypeSpecifyingExtension[][] $extensions
2055:	* @return mixed[]
2056:	*/
2057:	private function getTypeSpecifyingExtensionsForType(array $extensions, string $className): array
2058:	{
2059:	$extensionsForClass = [[]];
2060:	$class = $this->reflectionProvider->getClass($className);
2061:	foreach (array_merge([$className], $class->getParentClassesNames(), $class->getNativeReflection()->getInterfaceNames()) as $extensionClassName) {
2062:	if (!isset($extensions[$extensionClassName])) {
2063:	continue;
2064:	}
2065:
2066:	$extensionsForClass[] = $extensions[$extensionClassName];
2067:	}
2068:
2069:	return array_merge(...$extensionsForClass);
2070:	}
2071:
2072:	public function resolveEqual(Expr\BinaryOp\Equal $expr, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
2073:	{
2074:	$expressions = $this->findTypeExpressionsFromBinaryOperation($scope, $expr);
2075:	if ($expressions !== null) {
2076:	$exprNode = $expressions[0];
2077:	$constantType = $expressions[1];
2078:	$otherType = $expressions[2];
2079:
2080:	if (!$context->null() && $constantType->getValue() === null) {
2081:	$trueTypes = [
2082:	new NullType(),
2083:	new ConstantBooleanType(false),
2084:	new ConstantIntegerType(0),
2085:	new ConstantFloatType(0.0),
2086:	new ConstantStringType(''),
2087:	new ConstantArrayType([], []),
2088:	];
2089:	return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
2090:	}
2091:
2092:	if (!$context->null() && $constantType->getValue() === false) {
2093:	return $this->specifyTypesInCondition(
2094:	$scope,
2095:	$exprNode,
2096:	$context->true() ? TypeSpecifierContext::createFalsey() : TypeSpecifierContext::createFalsey()->negate(),
2097:	)->setRootExpr($expr);
2098:	}
2099:
2100:	if (!$context->null() && $constantType->getValue() === true) {
2101:	return $this->specifyTypesInCondition(
2102:	$scope,
2103:	$exprNode,
2104:	$context->true() ? TypeSpecifierContext::createTruthy() : TypeSpecifierContext::createTruthy()->negate(),
2105:	)->setRootExpr($expr);
2106:	}
2107:
2108:	if (!$context->null() && $constantType->getValue() === 0 && !$otherType->isInteger()->yes() && !$otherType->isBoolean()->yes()) {
2109:	/* There is a difference between php 7.x and 8.x on the equality
2110:	* behavior between zero and the empty string, so to be conservative
2111:	* we leave it untouched regardless of the language version */
2112:	if ($context->true()) {
2113:	$trueTypes = [
2114:	new NullType(),
2115:	new ConstantBooleanType(false),
2116:	new ConstantIntegerType(0),
2117:	new ConstantFloatType(0.0),
2118:	new StringType(),
2119:	];
2120:	} else {
2121:	$trueTypes = [
2122:	new NullType(),
2123:	new ConstantBooleanType(false),
2124:	new ConstantIntegerType(0),
2125:	new ConstantFloatType(0.0),
2126:	new ConstantStringType('0'),
2127:	];
2128:	}
2129:	return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
2130:	}
2131:
2132:	if (!$context->null() && $constantType->getValue() === '') {
2133:	/* There is a difference between php 7.x and 8.x on the equality
2134:	* behavior between zero and the empty string, so to be conservative
2135:	* we leave it untouched regardless of the language version */
2136:	if ($context->true()) {
2137:	$trueTypes = [
2138:	new NullType(),
2139:	new ConstantBooleanType(false),
2140:	new ConstantIntegerType(0),
2141:	new ConstantFloatType(0.0),
2142:	new ConstantStringType(''),
2143:	];
2144:	} else {
2145:	$trueTypes = [
2146:	new NullType(),
2147:	new ConstantBooleanType(false),
2148:	new ConstantStringType(''),
2149:	];
2150:	}
2151:	return $this->create($exprNode, new UnionType($trueTypes), $context, $scope)->setRootExpr($expr);
2152:	}
2153:
2154:	if (
2155:	$exprNode instanceof FuncCall
2156:	&& $exprNode->name instanceof Name
2157:	&& in_array(strtolower($exprNode->name->toString()), ['gettype', 'get_class', 'get_debug_type'], true)
2158:	&& isset($exprNode->getArgs()[0])
2159:	&& $constantType->isString()->yes()
2160:	) {
2161:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
2162:	}
2163:
2164:	if (
2165:	$context->true()
2166:	&& $exprNode instanceof FuncCall
2167:	&& $exprNode->name instanceof Name
2168:	&& $exprNode->name->toLowerString() === 'preg_match'
2169:	&& (new ConstantIntegerType(1))->isSuperTypeOf($constantType)->yes()
2170:	) {
2171:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
2172:	}
2173:
2174:	if (
2175:	$context->true()
2176:	&& $exprNode instanceof ClassConstFetch
2177:	&& $exprNode->name instanceof Node\Identifier
2178:	&& strtolower($exprNode->name->toString()) === 'class'
2179:	&& $constantType->isString()->yes()
2180:	) {
2181:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
2182:	}
2183:	}
2184:
2185:	$leftType = $scope->getType($expr->left);
2186:	$rightType = $scope->getType($expr->right);
2187:
2188:	$leftBooleanType = $leftType->toBoolean();
2189:	if ($leftBooleanType instanceof ConstantBooleanType && $rightType->isBoolean()->yes()) {
2190:	return $this->specifyTypesInCondition(
2191:	$scope,
2192:	new Expr\BinaryOp\Identical(
2193:	new ConstFetch(new Name($leftBooleanType->getValue() ? 'true' : 'false')),
2194:	$expr->right,
2195:	),
2196:	$context,
2197:	)->setRootExpr($expr);
2198:	}
2199:
2200:	$rightBooleanType = $rightType->toBoolean();
2201:	if ($rightBooleanType instanceof ConstantBooleanType && $leftType->isBoolean()->yes()) {
2202:	return $this->specifyTypesInCondition(
2203:	$scope,
2204:	new Expr\BinaryOp\Identical(
2205:	$expr->left,
2206:	new ConstFetch(new Name($rightBooleanType->getValue() ? 'true' : 'false')),
2207:	),
2208:	$context,
2209:	)->setRootExpr($expr);
2210:	}
2211:
2212:	if (
2213:	!$context->null()
2214:	&& $rightType->isArray()->yes()
2215:	&& $leftType->isConstantArray()->yes() && $leftType->isIterableAtLeastOnce()->no()
2216:	) {
2217:	return $this->create($expr->right, new NonEmptyArrayType(), $context->negate(), $scope)->setRootExpr($expr);
2218:	}
2219:
2220:	if (
2221:	!$context->null()
2222:	&& $leftType->isArray()->yes()
2223:	&& $rightType->isConstantArray()->yes() && $rightType->isIterableAtLeastOnce()->no()
2224:	) {
2225:	return $this->create($expr->left, new NonEmptyArrayType(), $context->negate(), $scope)->setRootExpr($expr);
2226:	}
2227:
2228:	if (
2229:	($leftType->isString()->yes() && $rightType->isString()->yes())
2230:	\|\| ($leftType->isInteger()->yes() && $rightType->isInteger()->yes())
2231:	\|\| ($leftType->isFloat()->yes() && $rightType->isFloat()->yes())
2232:	\|\| ($leftType->isEnum()->yes() && $rightType->isEnum()->yes())
2233:	) {
2234:	return $this->specifyTypesInCondition($scope, new Expr\BinaryOp\Identical($expr->left, $expr->right), $context)->setRootExpr($expr);
2235:	}
2236:
2237:	$leftExprString = $this->exprPrinter->printExpr($expr->left);
2238:	$rightExprString = $this->exprPrinter->printExpr($expr->right);
2239:	if ($leftExprString === $rightExprString) {
2240:	if (!$expr->left instanceof Expr\Variable \|\| !$expr->right instanceof Expr\Variable) {
2241:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
2242:	}
2243:	}
2244:
2245:	$leftTypes = $this->create($expr->left, $leftType, $context, $scope)->setRootExpr($expr);
2246:	$rightTypes = $this->create($expr->right, $rightType, $context, $scope)->setRootExpr($expr);
2247:
2248:	return $context->true()
2249:	? $leftTypes->unionWith($rightTypes)
2250:	: $leftTypes->normalize($scope)->intersectWith($rightTypes->normalize($scope));
2251:	}
2252:
2253:	public function resolveIdentical(Expr\BinaryOp\Identical $expr, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
2254:	{
2255:	$leftExpr = $expr->left;
2256:	$rightExpr = $expr->right;
2257:
2258:	// Normalize to: fn() === expr
2259:	if ($rightExpr instanceof FuncCall && !$leftExpr instanceof FuncCall) {
2260:	$specifiedTypes = $this->resolveNormalizedIdentical(new Expr\BinaryOp\Identical(
2261:	$rightExpr,
2262:	$leftExpr,
2263:	), $scope, $context);
2264:	} else {
2265:	$specifiedTypes = $this->resolveNormalizedIdentical(new Expr\BinaryOp\Identical(
2266:	$leftExpr,
2267:	$rightExpr,
2268:	), $scope, $context);
2269:	}
2270:
2271:	// merge result of fn1() === fn2() and fn2() === fn1()
2272:	if ($rightExpr instanceof FuncCall && $leftExpr instanceof FuncCall) {
2273:	return $specifiedTypes->unionWith(
2274:	$this->resolveNormalizedIdentical(new Expr\BinaryOp\Identical(
2275:	$rightExpr,
2276:	$leftExpr,
2277:	), $scope, $context),
2278:	);
2279:	}
2280:
2281:	return $specifiedTypes;
2282:	}
2283:
2284:	private function resolveNormalizedIdentical(Expr\BinaryOp\Identical $expr, Scope $scope, TypeSpecifierContext $context): SpecifiedTypes
2285:	{
2286:	$leftExpr = $expr->left;
2287:	$rightExpr = $expr->right;
2288:
2289:	$unwrappedLeftExpr = $leftExpr;
2290:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2291:	$unwrappedLeftExpr = $leftExpr->getExpr();
2292:	}
2293:	$unwrappedRightExpr = $rightExpr;
2294:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2295:	$unwrappedRightExpr = $rightExpr->getExpr();
2296:	}
2297:
2298:	$rightType = $scope->getType($rightExpr);
2299:
2300:	// (count($a) === $b)
2301:	if (
2302:	!$context->null()
2303:	&& $unwrappedLeftExpr instanceof FuncCall
2304:	&& count($unwrappedLeftExpr->getArgs()) >= 1
2305:	&& $unwrappedLeftExpr->name instanceof Name
2306:	&& in_array(strtolower((string) $unwrappedLeftExpr->name), ['count', 'sizeof'], true)
2307:	&& $rightType->isInteger()->yes()
2308:	) {
2309:	if (IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($rightType)->yes()) {
2310:	return $this->create($unwrappedLeftExpr->getArgs()[0]->value, new NeverType(), $context, $scope)->setRootExpr($expr);
2311:	}
2312:
2313:	$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
2314:	$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($rightType);
2315:	if ($isZero->yes()) {
2316:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2317:
2318:	if ($context->truthy() && !$argType->isArray()->yes()) {
2319:	$newArgType = new UnionType([
2320:	new ObjectType(Countable::class),
2321:	new ConstantArrayType([], []),
2322:	]);
2323:	} else {
2324:	$newArgType = new ConstantArrayType([], []);
2325:	}
2326:
2327:	return $funcTypes->unionWith(
2328:	$this->create($unwrappedLeftExpr->getArgs()[0]->value, $newArgType, $context, $scope)->setRootExpr($expr),
2329:	);
2330:	}
2331:
2332:	$specifiedTypes = $this->specifyTypesForCountFuncCall($unwrappedLeftExpr, $argType, $rightType, $context, $scope, $expr);
2333:	if ($specifiedTypes !== null) {
2334:	return $specifiedTypes;
2335:	}
2336:
2337:	if ($context->truthy() && $argType->isArray()->yes()) {
2338:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2339:	if (IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($rightType)->yes()) {
2340:	return $funcTypes->unionWith(
2341:	$this->create($unwrappedLeftExpr->getArgs()[0]->value, new NonEmptyArrayType(), $context, $scope)->setRootExpr($expr),
2342:	);
2343:	}
2344:
2345:	return $funcTypes;
2346:	}
2347:	}
2348:
2349:	// strlen($a) === $b
2350:	if (
2351:	!$context->null()
2352:	&& $unwrappedLeftExpr instanceof FuncCall
2353:	&& count($unwrappedLeftExpr->getArgs()) === 1
2354:	&& $unwrappedLeftExpr->name instanceof Name
2355:	&& in_array(strtolower((string) $unwrappedLeftExpr->name), ['strlen', 'mb_strlen'], true)
2356:	&& $rightType->isInteger()->yes()
2357:	) {
2358:	if (IntegerRangeType::fromInterval(null, -1)->isSuperTypeOf($rightType)->yes()) {
2359:	return $this->create($unwrappedLeftExpr->getArgs()[0]->value, new NeverType(), $context, $scope)->setRootExpr($expr);
2360:	}
2361:
2362:	$isZero = (new ConstantIntegerType(0))->isSuperTypeOf($rightType);
2363:	if ($isZero->yes()) {
2364:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2365:	return $funcTypes->unionWith(
2366:	$this->create($unwrappedLeftExpr->getArgs()[0]->value, new ConstantStringType(''), $context, $scope)->setRootExpr($expr),
2367:	);
2368:	}
2369:
2370:	if ($context->truthy() && IntegerRangeType::fromInterval(1, null)->isSuperTypeOf($rightType)->yes()) {
2371:	$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
2372:	if ($argType->isString()->yes()) {
2373:	$funcTypes = $this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2374:
2375:	$accessory = new AccessoryNonEmptyStringType();
2376:	if (IntegerRangeType::fromInterval(2, null)->isSuperTypeOf($rightType)->yes()) {
2377:	$accessory = new AccessoryNonFalsyStringType();
2378:	}
2379:	$valueTypes = $this->create($unwrappedLeftExpr->getArgs()[0]->value, $accessory, $context, $scope)->setRootExpr($expr);
2380:
2381:	return $funcTypes->unionWith($valueTypes);
2382:	}
2383:	}
2384:	}
2385:
2386:	// array_key_first($a) !== null
2387:	// array_key_last($a) !== null
2388:	if (
2389:	$unwrappedLeftExpr instanceof FuncCall
2390:	&& $unwrappedLeftExpr->name instanceof Name
2391:	&& in_array($unwrappedLeftExpr->name->toLowerString(), ['array_key_first', 'array_key_last'], true)
2392:	&& isset($unwrappedLeftExpr->getArgs()[0])
2393:	&& $rightType->isNull()->yes()
2394:	) {
2395:	$args = $unwrappedLeftExpr->getArgs();
2396:	$argType = $scope->getType($args[0]->value);
2397:	if ($argType->isArray()->yes()) {
2398:	return $this->create($args[0]->value, new NonEmptyArrayType(), $context->negate(), $scope)->setRootExpr($expr);
2399:	}
2400:	}
2401:
2402:	// preg_match($a) === $b
2403:	if (
2404:	$context->true()
2405:	&& $unwrappedLeftExpr instanceof FuncCall
2406:	&& $unwrappedLeftExpr->name instanceof Name
2407:	&& $unwrappedLeftExpr->name->toLowerString() === 'preg_match'
2408:	&& (new ConstantIntegerType(1))->isSuperTypeOf($rightType)->yes()
2409:	) {
2410:	return $this->specifyTypesInCondition(
2411:	$scope,
2412:	$leftExpr,
2413:	$context,
2414:	)->setRootExpr($expr);
2415:	}
2416:
2417:	// get_class($a) === 'Foo'
2418:	if (
2419:	$context->true()
2420:	&& $unwrappedLeftExpr instanceof FuncCall
2421:	&& $unwrappedLeftExpr->name instanceof Name
2422:	&& in_array(strtolower($unwrappedLeftExpr->name->toString()), ['get_class', 'get_debug_type'], true)
2423:	&& isset($unwrappedLeftExpr->getArgs()[0])
2424:	) {
2425:	if ($rightType instanceof ConstantStringType && $this->reflectionProvider->hasClass($rightType->getValue())) {
2426:	return $this->create(
2427:	$unwrappedLeftExpr->getArgs()[0]->value,
2428:	new ObjectType($rightType->getValue(), classReflection: $this->reflectionProvider->getClass($rightType->getValue())->asFinal()),
2429:	$context,
2430:	$scope,
2431:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2432:	}
2433:	if ($rightType->getClassStringObjectType()->isObject()->yes()) {
2434:	return $this->create(
2435:	$unwrappedLeftExpr->getArgs()[0]->value,
2436:	$rightType->getClassStringObjectType(),
2437:	$context,
2438:	$scope,
2439:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2440:	}
2441:	}
2442:
2443:	if (
2444:	$context->truthy()
2445:	&& $unwrappedLeftExpr instanceof FuncCall
2446:	&& $unwrappedLeftExpr->name instanceof Name
2447:	&& in_array(strtolower($unwrappedLeftExpr->name->toString()), [
2448:	'substr', 'strstr', 'stristr', 'strchr', 'strrchr', 'strtolower', 'strtoupper', 'ucfirst', 'lcfirst',
2449:	'mb_substr', 'mb_strstr', 'mb_stristr', 'mb_strchr', 'mb_strrchr', 'mb_strtolower', 'mb_strtoupper', 'mb_ucfirst', 'mb_lcfirst',
2450:	'ucwords', 'mb_convert_case', 'mb_convert_kana',
2451:	], true)
2452:	&& isset($unwrappedLeftExpr->getArgs()[0])
2453:	&& $rightType->isNonEmptyString()->yes()
2454:	) {
2455:	$argType = $scope->getType($unwrappedLeftExpr->getArgs()[0]->value);
2456:
2457:	if ($argType->isString()->yes()) {
2458:	$specifiedTypes = new SpecifiedTypes();
2459:	if (in_array(strtolower($unwrappedLeftExpr->name->toString()), ['strtolower', 'mb_strtolower'], true)) {
2460:	$specifiedTypes = $this->create(
2461:	$unwrappedRightExpr,
2462:	TypeCombinator::intersect($rightType, new AccessoryLowercaseStringType()),
2463:	$context,
2464:	$scope,
2465:	)->setRootExpr($expr);
2466:	}
2467:	if (in_array(strtolower($unwrappedLeftExpr->name->toString()), ['strtoupper', 'mb_strtoupper'], true)) {
2468:	$specifiedTypes = $this->create(
2469:	$unwrappedRightExpr,
2470:	TypeCombinator::intersect($rightType, new AccessoryUppercaseStringType()),
2471:	$context,
2472:	$scope,
2473:	)->setRootExpr($expr);
2474:	}
2475:
2476:	if ($rightType->isNonFalsyString()->yes()) {
2477:	return $specifiedTypes->unionWith($this->create(
2478:	$unwrappedLeftExpr->getArgs()[0]->value,
2479:	TypeCombinator::intersect($argType, new AccessoryNonFalsyStringType()),
2480:	$context,
2481:	$scope,
2482:	)->setRootExpr($expr));
2483:	}
2484:
2485:	return $specifiedTypes->unionWith($this->create(
2486:	$unwrappedLeftExpr->getArgs()[0]->value,
2487:	TypeCombinator::intersect($argType, new AccessoryNonEmptyStringType()),
2488:	$context,
2489:	$scope,
2490:	)->setRootExpr($expr));
2491:	}
2492:	}
2493:
2494:	if ($rightType->isString()->yes()) {
2495:	$types = null;
2496:	foreach ($rightType->getConstantStrings() as $constantString) {
2497:	$specifiedType = $this->specifyTypesForConstantStringBinaryExpression($unwrappedLeftExpr, $constantString, $context, $scope, $expr);
2498:
2499:	if ($specifiedType === null) {
2500:	continue;
2501:	}
2502:	if ($types === null) {
2503:	$types = $specifiedType;
2504:	continue;
2505:	}
2506:
2507:	$types = $types->intersectWith($specifiedType);
2508:	}
2509:
2510:	if ($types !== null) {
2511:	if ($leftExpr !== $unwrappedLeftExpr) {
2512:	$types = $types->unionWith($this->create($leftExpr, $rightType, $context, $scope)->setRootExpr($expr));
2513:	}
2514:	return $types;
2515:	}
2516:	}
2517:
2518:	$expressions = $this->findTypeExpressionsFromBinaryOperation($scope, $expr);
2519:	if ($expressions !== null) {
2520:	$exprNode = $expressions[0];
2521:	$constantType = $expressions[1];
2522:
2523:	$unwrappedExprNode = $exprNode;
2524:	if ($exprNode instanceof AlwaysRememberedExpr) {
2525:	$unwrappedExprNode = $exprNode->getExpr();
2526:	}
2527:
2528:	$specifiedType = $this->specifyTypesForConstantBinaryExpression($unwrappedExprNode, $constantType, $context, $scope, $expr);
2529:	if ($specifiedType !== null) {
2530:	if ($exprNode !== $unwrappedExprNode) {
2531:	$specifiedType = $specifiedType->unionWith(
2532:	$this->create($exprNode, $constantType, $context, $scope)->setRootExpr($expr),
2533:	);
2534:	}
2535:	return $specifiedType;
2536:	}
2537:	}
2538:
2539:	// $a::class === 'Foo'
2540:	if (
2541:	$context->true() &&
2542:	$unwrappedLeftExpr instanceof ClassConstFetch &&
2543:	$unwrappedLeftExpr->class instanceof Expr &&
2544:	$unwrappedLeftExpr->name instanceof Node\Identifier &&
2545:	$unwrappedRightExpr instanceof ClassConstFetch &&
2546:	$rightType instanceof ConstantStringType &&
2547:	$rightType->getValue() !== '' &&
2548:	strtolower($unwrappedLeftExpr->name->toString()) === 'class'
2549:	) {
2550:	if ($this->reflectionProvider->hasClass($rightType->getValue())) {
2551:	return $this->create(
2552:	$unwrappedLeftExpr->class,
2553:	new ObjectType($rightType->getValue(), classReflection: $this->reflectionProvider->getClass($rightType->getValue())->asFinal()),
2554:	$context,
2555:	$scope,
2556:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2557:	}
2558:	return $this->specifyTypesInCondition(
2559:	$scope,
2560:	new Instanceof_(
2561:	$unwrappedLeftExpr->class,
2562:	new Name($rightType->getValue()),
2563:	),
2564:	$context,
2565:	)->unionWith($this->create($leftExpr, $rightType, $context, $scope))->setRootExpr($expr);
2566:	}
2567:
2568:	$leftType = $scope->getType($leftExpr);
2569:
2570:	// 'Foo' === $a::class
2571:	if (
2572:	$context->true() &&
2573:	$unwrappedRightExpr instanceof ClassConstFetch &&
2574:	$unwrappedRightExpr->class instanceof Expr &&
2575:	$unwrappedRightExpr->name instanceof Node\Identifier &&
2576:	$unwrappedLeftExpr instanceof ClassConstFetch &&
2577:	$leftType instanceof ConstantStringType &&
2578:	$leftType->getValue() !== '' &&
2579:	strtolower($unwrappedRightExpr->name->toString()) === 'class'
2580:	) {
2581:	if ($this->reflectionProvider->hasClass($leftType->getValue())) {
2582:	return $this->create(
2583:	$unwrappedRightExpr->class,
2584:	new ObjectType($leftType->getValue(), classReflection: $this->reflectionProvider->getClass($leftType->getValue())->asFinal()),
2585:	$context,
2586:	$scope,
2587:	)->unionWith($this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr));
2588:	}
2589:
2590:	return $this->specifyTypesInCondition(
2591:	$scope,
2592:	new Instanceof_(
2593:	$unwrappedRightExpr->class,
2594:	new Name($leftType->getValue()),
2595:	),
2596:	$context,
2597:	)->unionWith($this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr));
2598:	}
2599:
2600:	if ($context->false()) {
2601:	$identicalType = $scope->getType($expr);
2602:	if ($identicalType instanceof ConstantBooleanType) {
2603:	$never = new NeverType();
2604:	$contextForTypes = $identicalType->getValue() ? $context->negate() : $context;
2605:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2606:	$leftTypes = $this->create($unwrappedLeftExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
2607:	} else {
2608:	$leftTypes = $this->create($leftExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
2609:	}
2610:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2611:	$rightTypes = $this->create($unwrappedRightExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
2612:	} else {
2613:	$rightTypes = $this->create($rightExpr, $never, $contextForTypes, $scope)->setRootExpr($expr);
2614:	}
2615:	return $leftTypes->unionWith($rightTypes);
2616:	}
2617:	}
2618:
2619:	$types = null;
2620:	if (
2621:	count($leftType->getFiniteTypes()) === 1
2622:	\|\| (
2623:	$context->true()
2624:	&& $leftType->isConstantValue()->yes()
2625:	&& !$rightType->equals($leftType)
2626:	&& $rightType->isSuperTypeOf($leftType)->yes())
2627:	) {
2628:	$types = $this->create(
2629:	$rightExpr,
2630:	$leftType,
2631:	$context,
2632:	$scope,
2633:	)->setRootExpr($expr);
2634:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2635:	$types = $types->unionWith($this->create(
2636:	$unwrappedRightExpr,
2637:	$leftType,
2638:	$context,
2639:	$scope,
2640:	))->setRootExpr($expr);
2641:	}
2642:	}
2643:	if (
2644:	count($rightType->getFiniteTypes()) === 1
2645:	\|\| (
2646:	$context->true()
2647:	&& $rightType->isConstantValue()->yes()
2648:	&& !$leftType->equals($rightType)
2649:	&& $leftType->isSuperTypeOf($rightType)->yes()
2650:	)
2651:	) {
2652:	$leftTypes = $this->create(
2653:	$leftExpr,
2654:	$rightType,
2655:	$context,
2656:	$scope,
2657:	)->setRootExpr($expr);
2658:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2659:	$leftTypes = $leftTypes->unionWith($this->create(
2660:	$unwrappedLeftExpr,
2661:	$rightType,
2662:	$context,
2663:	$scope,
2664:	))->setRootExpr($expr);
2665:	}
2666:	if ($types !== null) {
2667:	$types = $types->unionWith($leftTypes);
2668:	} else {
2669:	$types = $leftTypes;
2670:	}
2671:	}
2672:
2673:	if ($types !== null) {
2674:	return $types;
2675:	}
2676:
2677:	$leftExprString = $this->exprPrinter->printExpr($unwrappedLeftExpr);
2678:	$rightExprString = $this->exprPrinter->printExpr($unwrappedRightExpr);
2679:	if ($leftExprString === $rightExprString) {
2680:	if (!$unwrappedLeftExpr instanceof Expr\Variable \|\| !$unwrappedRightExpr instanceof Expr\Variable) {
2681:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
2682:	}
2683:	}
2684:
2685:	if ($context->true()) {
2686:	$leftTypes = $this->create($leftExpr, $rightType, $context, $scope)->setRootExpr($expr);
2687:	$rightTypes = $this->create($rightExpr, $leftType, $context, $scope)->setRootExpr($expr);
2688:	if ($leftExpr instanceof AlwaysRememberedExpr) {
2689:	$leftTypes = $leftTypes->unionWith(
2690:	$this->create($unwrappedLeftExpr, $rightType, $context, $scope)->setRootExpr($expr),
2691:	);
2692:	}
2693:	if ($rightExpr instanceof AlwaysRememberedExpr) {
2694:	$rightTypes = $rightTypes->unionWith(
2695:	$this->create($unwrappedRightExpr, $leftType, $context, $scope)->setRootExpr($expr),
2696:	);
2697:	}
2698:	return $leftTypes->unionWith($rightTypes);
2699:	} elseif ($context->false()) {
2700:	return $this->create($leftExpr, $leftType, $context, $scope)->setRootExpr($expr)->normalize($scope)
2701:	->intersectWith($this->create($rightExpr, $rightType, $context, $scope)->setRootExpr($expr)->normalize($scope));
2702:	}
2703:
2704:	return (new SpecifiedTypes([], []))->setRootExpr($expr);
2705:	}
2706:
2707:	}
2708:

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