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

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