1: <?php declare(strict_types = 1);
2:
3: namespace PHPStan\Analyser;
4:
5: use ArrayAccess;
6: use Closure;
7: use DivisionByZeroError;
8: use Override;
9: use PhpParser\Comment\Doc;
10: use PhpParser\Modifiers;
11: use PhpParser\Node;
12: use PhpParser\Node\Arg;
13: use PhpParser\Node\AttributeGroup;
14: use PhpParser\Node\ComplexType;
15: use PhpParser\Node\Expr;
16: use PhpParser\Node\Expr\Array_;
17: use PhpParser\Node\Expr\ArrayDimFetch;
18: use PhpParser\Node\Expr\Assign;
19: use PhpParser\Node\Expr\AssignRef;
20: use PhpParser\Node\Expr\BinaryOp;
21: use PhpParser\Node\Expr\BinaryOp\BooleanAnd;
22: use PhpParser\Node\Expr\BinaryOp\BooleanOr;
23: use PhpParser\Node\Expr\BinaryOp\Coalesce;
24: use PhpParser\Node\Expr\BooleanNot;
25: use PhpParser\Node\Expr\CallLike;
26: use PhpParser\Node\Expr\Cast;
27: use PhpParser\Node\Expr\ConstFetch;
28: use PhpParser\Node\Expr\ErrorSuppress;
29: use PhpParser\Node\Expr\Exit_;
30: use PhpParser\Node\Expr\FuncCall;
31: use PhpParser\Node\Expr\Instanceof_;
32: use PhpParser\Node\Expr\List_;
33: use PhpParser\Node\Expr\MethodCall;
34: use PhpParser\Node\Expr\New_;
35: use PhpParser\Node\Expr\PropertyFetch;
36: use PhpParser\Node\Expr\StaticCall;
37: use PhpParser\Node\Expr\StaticPropertyFetch;
38: use PhpParser\Node\Expr\Ternary;
39: use PhpParser\Node\Expr\Variable;
40: use PhpParser\Node\Identifier;
41: use PhpParser\Node\Name;
42: use PhpParser\Node\Stmt\Break_;
43: use PhpParser\Node\Stmt\Class_;
44: use PhpParser\Node\Stmt\Continue_;
45: use PhpParser\Node\Stmt\Do_;
46: use PhpParser\Node\Stmt\Echo_;
47: use PhpParser\Node\Stmt\For_;
48: use PhpParser\Node\Stmt\Foreach_;
49: use PhpParser\Node\Stmt\If_;
50: use PhpParser\Node\Stmt\InlineHTML;
51: use PhpParser\Node\Stmt\Return_;
52: use PhpParser\Node\Stmt\Static_;
53: use PhpParser\Node\Stmt\Switch_;
54: use PhpParser\Node\Stmt\TryCatch;
55: use PhpParser\Node\Stmt\Unset_;
56: use PhpParser\Node\Stmt\While_;
57: use PhpParser\NodeFinder;
58: use PhpParser\NodeTraverser;
59: use PhpParser\NodeVisitor\CloningVisitor;
60: use PhpParser\NodeVisitorAbstract;
61: use PHPStan\BetterReflection\Reflection\Adapter\ReflectionClass;
62: use PHPStan\BetterReflection\Reflection\ReflectionEnum;
63: use PHPStan\BetterReflection\Reflector\Reflector;
64: use PHPStan\BetterReflection\SourceLocator\Ast\Strategy\NodeToReflection;
65: use PHPStan\BetterReflection\SourceLocator\Located\LocatedSource;
66: use PHPStan\DependencyInjection\AutowiredParameter;
67: use PHPStan\DependencyInjection\AutowiredService;
68: use PHPStan\DependencyInjection\Reflection\ClassReflectionExtensionRegistryProvider;
69: use PHPStan\DependencyInjection\Type\DynamicThrowTypeExtensionProvider;
70: use PHPStan\DependencyInjection\Type\ParameterClosureThisExtensionProvider;
71: use PHPStan\DependencyInjection\Type\ParameterClosureTypeExtensionProvider;
72: use PHPStan\DependencyInjection\Type\ParameterOutTypeExtensionProvider;
73: use PHPStan\File\FileHelper;
74: use PHPStan\File\FileReader;
75: use PHPStan\Node\BooleanAndNode;
76: use PHPStan\Node\BooleanOrNode;
77: use PHPStan\Node\BreaklessWhileLoopNode;
78: use PHPStan\Node\CatchWithUnthrownExceptionNode;
79: use PHPStan\Node\ClassConstantsNode;
80: use PHPStan\Node\ClassMethodsNode;
81: use PHPStan\Node\ClassPropertiesNode;
82: use PHPStan\Node\ClassPropertyNode;
83: use PHPStan\Node\ClassStatementsGatherer;
84: use PHPStan\Node\ClosureReturnStatementsNode;
85: use PHPStan\Node\DoWhileLoopConditionNode;
86: use PHPStan\Node\ExecutionEndNode;
87: use PHPStan\Node\Expr\AlwaysRememberedExpr;
88: use PHPStan\Node\Expr\ExistingArrayDimFetch;
89: use PHPStan\Node\Expr\GetIterableKeyTypeExpr;
90: use PHPStan\Node\Expr\GetIterableValueTypeExpr;
91: use PHPStan\Node\Expr\GetOffsetValueTypeExpr;
92: use PHPStan\Node\Expr\NativeTypeExpr;
93: use PHPStan\Node\Expr\OriginalPropertyTypeExpr;
94: use PHPStan\Node\Expr\PropertyInitializationExpr;
95: use PHPStan\Node\Expr\SetExistingOffsetValueTypeExpr;
96: use PHPStan\Node\Expr\SetOffsetValueTypeExpr;
97: use PHPStan\Node\Expr\TypeExpr;
98: use PHPStan\Node\Expr\UnsetOffsetExpr;
99: use PHPStan\Node\FinallyExitPointsNode;
100: use PHPStan\Node\FunctionCallableNode;
101: use PHPStan\Node\FunctionReturnStatementsNode;
102: use PHPStan\Node\InArrowFunctionNode;
103: use PHPStan\Node\InClassMethodNode;
104: use PHPStan\Node\InClassNode;
105: use PHPStan\Node\InClosureNode;
106: use PHPStan\Node\InForeachNode;
107: use PHPStan\Node\InFunctionNode;
108: use PHPStan\Node\InPropertyHookNode;
109: use PHPStan\Node\InstantiationCallableNode;
110: use PHPStan\Node\InTraitNode;
111: use PHPStan\Node\InvalidateExprNode;
112: use PHPStan\Node\LiteralArrayItem;
113: use PHPStan\Node\LiteralArrayNode;
114: use PHPStan\Node\MatchExpressionArm;
115: use PHPStan\Node\MatchExpressionArmBody;
116: use PHPStan\Node\MatchExpressionArmCondition;
117: use PHPStan\Node\MatchExpressionNode;
118: use PHPStan\Node\MethodCallableNode;
119: use PHPStan\Node\MethodReturnStatementsNode;
120: use PHPStan\Node\NoopExpressionNode;
121: use PHPStan\Node\PropertyAssignNode;
122: use PHPStan\Node\PropertyHookReturnStatementsNode;
123: use PHPStan\Node\PropertyHookStatementNode;
124: use PHPStan\Node\ReturnStatement;
125: use PHPStan\Node\StaticMethodCallableNode;
126: use PHPStan\Node\UnreachableStatementNode;
127: use PHPStan\Node\VariableAssignNode;
128: use PHPStan\Node\VarTagChangedExpressionTypeNode;
129: use PHPStan\Parser\ArrowFunctionArgVisitor;
130: use PHPStan\Parser\ClosureArgVisitor;
131: use PHPStan\Parser\ImmediatelyInvokedClosureVisitor;
132: use PHPStan\Parser\LineAttributesVisitor;
133: use PHPStan\Parser\Parser;
134: use PHPStan\Php\PhpVersion;
135: use PHPStan\PhpDoc\PhpDocInheritanceResolver;
136: use PHPStan\PhpDoc\ResolvedPhpDocBlock;
137: use PHPStan\PhpDoc\StubPhpDocProvider;
138: use PHPStan\PhpDoc\Tag\VarTag;
139: use PHPStan\Reflection\Assertions;
140: use PHPStan\Reflection\AttributeReflectionFactory;
141: use PHPStan\Reflection\Callables\CallableParametersAcceptor;
142: use PHPStan\Reflection\Callables\SimpleImpurePoint;
143: use PHPStan\Reflection\Callables\SimpleThrowPoint;
144: use PHPStan\Reflection\ClassReflection;
145: use PHPStan\Reflection\Deprecation\DeprecationProvider;
146: use PHPStan\Reflection\ExtendedMethodReflection;
147: use PHPStan\Reflection\ExtendedParameterReflection;
148: use PHPStan\Reflection\ExtendedParametersAcceptor;
149: use PHPStan\Reflection\FunctionReflection;
150: use PHPStan\Reflection\InitializerExprContext;
151: use PHPStan\Reflection\InitializerExprTypeResolver;
152: use PHPStan\Reflection\MethodReflection;
153: use PHPStan\Reflection\Native\NativeMethodReflection;
154: use PHPStan\Reflection\Native\NativeParameterReflection;
155: use PHPStan\Reflection\ParameterReflection;
156: use PHPStan\Reflection\ParametersAcceptor;
157: use PHPStan\Reflection\ParametersAcceptorSelector;
158: use PHPStan\Reflection\Php\PhpFunctionFromParserNodeReflection;
159: use PHPStan\Reflection\Php\PhpMethodFromParserNodeReflection;
160: use PHPStan\Reflection\Php\PhpMethodReflection;
161: use PHPStan\Reflection\Php\PhpPropertyReflection;
162: use PHPStan\Reflection\ReflectionProvider;
163: use PHPStan\Reflection\SignatureMap\SignatureMapProvider;
164: use PHPStan\Rules\Properties\ReadWritePropertiesExtensionProvider;
165: use PHPStan\ShouldNotHappenException;
166: use PHPStan\TrinaryLogic;
167: use PHPStan\Type\Accessory\AccessoryArrayListType;
168: use PHPStan\Type\Accessory\HasOffsetValueType;
169: use PHPStan\Type\Accessory\NonEmptyArrayType;
170: use PHPStan\Type\ArrayType;
171: use PHPStan\Type\ClosureType;
172: use PHPStan\Type\Constant\ConstantArrayType;
173: use PHPStan\Type\Constant\ConstantArrayTypeBuilder;
174: use PHPStan\Type\Constant\ConstantIntegerType;
175: use PHPStan\Type\Constant\ConstantStringType;
176: use PHPStan\Type\ErrorType;
177: use PHPStan\Type\FileTypeMapper;
178: use PHPStan\Type\GeneralizePrecision;
179: use PHPStan\Type\Generic\TemplateTypeHelper;
180: use PHPStan\Type\Generic\TemplateTypeMap;
181: use PHPStan\Type\Generic\TemplateTypeVariance;
182: use PHPStan\Type\Generic\TemplateTypeVarianceMap;
183: use PHPStan\Type\IntegerType;
184: use PHPStan\Type\IntersectionType;
185: use PHPStan\Type\MixedType;
186: use PHPStan\Type\NeverType;
187: use PHPStan\Type\NullType;
188: use PHPStan\Type\ObjectType;
189: use PHPStan\Type\ObjectWithoutClassType;
190: use PHPStan\Type\ParserNodeTypeToPHPStanType;
191: use PHPStan\Type\ResourceType;
192: use PHPStan\Type\StaticType;
193: use PHPStan\Type\StaticTypeFactory;
194: use PHPStan\Type\StringType;
195: use PHPStan\Type\ThisType;
196: use PHPStan\Type\Type;
197: use PHPStan\Type\TypeCombinator;
198: use PHPStan\Type\TypeTraverser;
199: use PHPStan\Type\TypeUtils;
200: use PHPStan\Type\UnionType;
201: use ReflectionProperty;
202: use Throwable;
203: use Traversable;
204: use TypeError;
205: use UnhandledMatchError;
206: use function array_fill_keys;
207: use function array_filter;
208: use function array_key_exists;
209: use function array_key_last;
210: use function array_keys;
211: use function array_map;
212: use function array_merge;
213: use function array_pop;
214: use function array_reverse;
215: use function array_slice;
216: use function array_values;
217: use function base64_decode;
218: use function count;
219: use function in_array;
220: use function is_array;
221: use function is_int;
222: use function is_string;
223: use function ksort;
224: use function sprintf;
225: use function str_starts_with;
226: use function strtolower;
227: use function trim;
228: use function usort;
229: use const PHP_VERSION_ID;
230: use const SORT_NUMERIC;
231:
232: #[AutowiredService]
233: final class NodeScopeResolver
234: {
235:
236: private const LOOP_SCOPE_ITERATIONS = 3;
237: private const GENERALIZE_AFTER_ITERATION = 1;
238:
239: /** @var bool[] filePath(string) => bool(true) */
240: private array $analysedFiles = [];
241:
242: /** @var array<string, true> */
243: private array $earlyTerminatingMethodNames;
244:
245: /** @var array<string, true> */
246: private array $calledMethodStack = [];
247:
248: /** @var array<string, MutatingScope|null> */
249: private array $calledMethodResults = [];
250:
251: /**
252: * @param string[][] $earlyTerminatingMethodCalls className(string) => methods(string[])
253: * @param array<int, string> $earlyTerminatingFunctionCalls
254: * @param string[] $universalObjectCratesClasses
255: */
256: public function __construct(
257: private readonly ReflectionProvider $reflectionProvider,
258: private readonly InitializerExprTypeResolver $initializerExprTypeResolver,
259: #[AutowiredParameter(ref: '@nodeScopeResolverReflector')]
260: private readonly Reflector $reflector,
261: private readonly ClassReflectionExtensionRegistryProvider $classReflectionExtensionRegistryProvider,
262: private readonly ParameterOutTypeExtensionProvider $parameterOutTypeExtensionProvider,
263: #[AutowiredParameter(ref: '@defaultAnalysisParser')]
264: private readonly Parser $parser,
265: private readonly FileTypeMapper $fileTypeMapper,
266: private readonly StubPhpDocProvider $stubPhpDocProvider,
267: private readonly PhpVersion $phpVersion,
268: private readonly SignatureMapProvider $signatureMapProvider,
269: private readonly DeprecationProvider $deprecationProvider,
270: private readonly AttributeReflectionFactory $attributeReflectionFactory,
271: private readonly PhpDocInheritanceResolver $phpDocInheritanceResolver,
272: private readonly FileHelper $fileHelper,
273: private readonly TypeSpecifier $typeSpecifier,
274: private readonly DynamicThrowTypeExtensionProvider $dynamicThrowTypeExtensionProvider,
275: private readonly ReadWritePropertiesExtensionProvider $readWritePropertiesExtensionProvider,
276: private readonly ParameterClosureThisExtensionProvider $parameterClosureThisExtensionProvider,
277: private readonly ParameterClosureTypeExtensionProvider $parameterClosureTypeExtensionProvider,
278: private readonly ScopeFactory $scopeFactory,
279: #[AutowiredParameter]
280: private readonly bool $polluteScopeWithLoopInitialAssignments,
281: #[AutowiredParameter]
282: private readonly bool $polluteScopeWithAlwaysIterableForeach,
283: #[AutowiredParameter]
284: private readonly bool $polluteScopeWithBlock,
285: #[AutowiredParameter]
286: private readonly array $earlyTerminatingMethodCalls,
287: #[AutowiredParameter]
288: private readonly array $earlyTerminatingFunctionCalls,
289: #[AutowiredParameter]
290: private readonly array $universalObjectCratesClasses,
291: #[AutowiredParameter(ref: '%exceptions.implicitThrows%')]
292: private readonly bool $implicitThrows,
293: #[AutowiredParameter]
294: private readonly bool $treatPhpDocTypesAsCertain,
295: private readonly bool $narrowMethodScopeFromConstructor = true,
296: )
297: {
298: $earlyTerminatingMethodNames = [];
299: foreach ($this->earlyTerminatingMethodCalls as $methodNames) {
300: foreach ($methodNames as $methodName) {
301: $earlyTerminatingMethodNames[strtolower($methodName)] = true;
302: }
303: }
304: $this->earlyTerminatingMethodNames = $earlyTerminatingMethodNames;
305: }
306:
307: /**
308: * @api
309: * @param string[] $files
310: */
311: public function setAnalysedFiles(array $files): void
312: {
313: $this->analysedFiles = array_fill_keys($files, true);
314: }
315:
316: /**
317: * @api
318: * @param Node[] $nodes
319: * @param callable(Node $node, Scope $scope): void $nodeCallback
320: */
321: public function processNodes(
322: array $nodes,
323: MutatingScope $scope,
324: callable $nodeCallback,
325: ): void
326: {
327: $alreadyTerminated = false;
328: foreach ($nodes as $i => $node) {
329: if (
330: !$node instanceof Node\Stmt
331: || ($alreadyTerminated && !($node instanceof Node\Stmt\Function_ || $node instanceof Node\Stmt\ClassLike))
332: ) {
333: continue;
334: }
335:
336: $statementResult = $this->processStmtNode($node, $scope, $nodeCallback, StatementContext::createTopLevel());
337: $scope = $statementResult->getScope();
338: if ($alreadyTerminated || !$statementResult->isAlwaysTerminating()) {
339: continue;
340: }
341:
342: $alreadyTerminated = true;
343: $nextStmts = $this->getNextUnreachableStatements(array_slice($nodes, $i + 1), true);
344: $this->processUnreachableStatement($nextStmts, $scope, $nodeCallback);
345: }
346: }
347:
348: /**
349: * @param Node\Stmt[] $nextStmts
350: * @param callable(Node $node, Scope $scope): void $nodeCallback
351: */
352: private function processUnreachableStatement(array $nextStmts, MutatingScope $scope, callable $nodeCallback): void
353: {
354: if ($nextStmts === []) {
355: return;
356: }
357:
358: $unreachableStatement = null;
359: $nextStatements = [];
360:
361: foreach ($nextStmts as $key => $nextStmt) {
362: if ($key === 0) {
363: $unreachableStatement = $nextStmt;
364: continue;
365: }
366:
367: $nextStatements[] = $nextStmt;
368: }
369:
370: if (!$unreachableStatement instanceof Node\Stmt) {
371: return;
372: }
373:
374: $nodeCallback(new UnreachableStatementNode($unreachableStatement, $nextStatements), $scope);
375: }
376:
377: /**
378: * @api
379: * @param Node\Stmt[] $stmts
380: * @param callable(Node $node, Scope $scope): void $nodeCallback
381: */
382: public function processStmtNodes(
383: Node $parentNode,
384: array $stmts,
385: MutatingScope $scope,
386: callable $nodeCallback,
387: StatementContext $context,
388: ): StatementResult
389: {
390: $exitPoints = [];
391: $throwPoints = [];
392: $impurePoints = [];
393: $alreadyTerminated = false;
394: $hasYield = false;
395: $stmtCount = count($stmts);
396: $shouldCheckLastStatement = $parentNode instanceof Node\Stmt\Function_
397: || $parentNode instanceof Node\Stmt\ClassMethod
398: || $parentNode instanceof PropertyHookStatementNode
399: || $parentNode instanceof Expr\Closure;
400: foreach ($stmts as $i => $stmt) {
401: if ($alreadyTerminated && !($stmt instanceof Node\Stmt\Function_ || $stmt instanceof Node\Stmt\ClassLike)) {
402: continue;
403: }
404:
405: $isLast = $i === $stmtCount - 1;
406: $statementResult = $this->processStmtNode(
407: $stmt,
408: $scope,
409: $nodeCallback,
410: $context,
411: );
412: $scope = $statementResult->getScope();
413: $hasYield = $hasYield || $statementResult->hasYield();
414:
415: if ($shouldCheckLastStatement && $isLast) {
416: $endStatements = $statementResult->getEndStatements();
417: if (count($endStatements) > 0) {
418: foreach ($endStatements as $endStatement) {
419: $endStatementResult = $endStatement->getResult();
420: $nodeCallback(new ExecutionEndNode(
421: $endStatement->getStatement(),
422: new StatementResult(
423: $endStatementResult->getScope(),
424: $hasYield,
425: $endStatementResult->isAlwaysTerminating(),
426: $endStatementResult->getExitPoints(),
427: $endStatementResult->getThrowPoints(),
428: $endStatementResult->getImpurePoints(),
429: ),
430: $parentNode->getReturnType() !== null,
431: ), $endStatementResult->getScope());
432: }
433: } else {
434: $nodeCallback(new ExecutionEndNode(
435: $stmt,
436: new StatementResult(
437: $scope,
438: $hasYield,
439: $statementResult->isAlwaysTerminating(),
440: $statementResult->getExitPoints(),
441: $statementResult->getThrowPoints(),
442: $statementResult->getImpurePoints(),
443: ),
444: $parentNode->getReturnType() !== null,
445: ), $scope);
446: }
447: }
448:
449: $exitPoints = array_merge($exitPoints, $statementResult->getExitPoints());
450: $throwPoints = array_merge($throwPoints, $statementResult->getThrowPoints());
451: $impurePoints = array_merge($impurePoints, $statementResult->getImpurePoints());
452:
453: if ($alreadyTerminated || !$statementResult->isAlwaysTerminating()) {
454: continue;
455: }
456:
457: $alreadyTerminated = true;
458: $nextStmts = $this->getNextUnreachableStatements(array_slice($stmts, $i + 1), $parentNode instanceof Node\Stmt\Namespace_);
459: $this->processUnreachableStatement($nextStmts, $scope, $nodeCallback);
460: }
461:
462: $statementResult = new StatementResult($scope, $hasYield, $alreadyTerminated, $exitPoints, $throwPoints, $impurePoints);
463: if ($stmtCount === 0 && $shouldCheckLastStatement) {
464: $returnTypeNode = $parentNode->getReturnType();
465: if ($parentNode instanceof Expr\Closure) {
466: $parentNode = new Node\Stmt\Expression($parentNode, $parentNode->getAttributes());
467: }
468: $nodeCallback(new ExecutionEndNode(
469: $parentNode,
470: $statementResult,
471: $returnTypeNode !== null,
472: ), $scope);
473: }
474:
475: return $statementResult;
476: }
477:
478: /**
479: * @param callable(Node $node, Scope $scope): void $nodeCallback
480: */
481: private function processStmtNode(
482: Node\Stmt $stmt,
483: MutatingScope $scope,
484: callable $nodeCallback,
485: StatementContext $context,
486: ): StatementResult
487: {
488: if (
489: !$stmt instanceof Static_
490: && !$stmt instanceof Foreach_
491: && !$stmt instanceof Node\Stmt\Global_
492: && !$stmt instanceof Node\Stmt\Property
493: && !$stmt instanceof Node\Stmt\ClassConst
494: && !$stmt instanceof Node\Stmt\Const_
495: ) {
496: $scope = $this->processStmtVarAnnotation($scope, $stmt, null, $nodeCallback);
497: }
498:
499: if ($stmt instanceof Node\Stmt\ClassMethod) {
500: if (!$scope->isInClass()) {
501: throw new ShouldNotHappenException();
502: }
503: if (
504: $scope->isInTrait()
505: && $scope->getClassReflection()->hasNativeMethod($stmt->name->toString())
506: ) {
507: $methodReflection = $scope->getClassReflection()->getNativeMethod($stmt->name->toString());
508: if ($methodReflection instanceof NativeMethodReflection) {
509: return new StatementResult($scope, false, false, [], [], []);
510: }
511: if ($methodReflection instanceof PhpMethodReflection) {
512: $declaringTrait = $methodReflection->getDeclaringTrait();
513: if ($declaringTrait === null || $declaringTrait->getName() !== $scope->getTraitReflection()->getName()) {
514: return new StatementResult($scope, false, false, [], [], []);
515: }
516: }
517: }
518: }
519:
520: $stmtScope = $scope;
521: if ($stmt instanceof Node\Stmt\Expression && $stmt->expr instanceof Expr\Throw_) {
522: $stmtScope = $this->processStmtVarAnnotation($scope, $stmt, $stmt->expr->expr, $nodeCallback);
523: }
524: if ($stmt instanceof Return_) {
525: $stmtScope = $this->processStmtVarAnnotation($scope, $stmt, $stmt->expr, $nodeCallback);
526: }
527:
528: $nodeCallback($stmt, $stmtScope);
529:
530: $overridingThrowPoints = $this->getOverridingThrowPoints($stmt, $scope);
531:
532: if ($stmt instanceof Node\Stmt\Declare_) {
533: $hasYield = false;
534: $throwPoints = [];
535: $impurePoints = [];
536: $alwaysTerminating = false;
537: $exitPoints = [];
538: foreach ($stmt->declares as $declare) {
539: $nodeCallback($declare, $scope);
540: $nodeCallback($declare->value, $scope);
541: if (
542: $declare->key->name !== 'strict_types'
543: || !($declare->value instanceof Node\Scalar\Int_)
544: || $declare->value->value !== 1
545: ) {
546: continue;
547: }
548:
549: $scope = $scope->enterDeclareStrictTypes();
550: }
551:
552: if ($stmt->stmts !== null) {
553: $result = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context);
554: $scope = $result->getScope();
555: $hasYield = $result->hasYield();
556: $throwPoints = $result->getThrowPoints();
557: $impurePoints = $result->getImpurePoints();
558: $alwaysTerminating = $result->isAlwaysTerminating();
559: $exitPoints = $result->getExitPoints();
560: }
561:
562: return new StatementResult($scope, $hasYield, $alwaysTerminating, $exitPoints, $throwPoints, $impurePoints);
563: } elseif ($stmt instanceof Node\Stmt\Function_) {
564: $hasYield = false;
565: $throwPoints = [];
566: $impurePoints = [];
567: $this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
568: [$templateTypeMap, $phpDocParameterTypes, $phpDocImmediatelyInvokedCallableParameters, $phpDocClosureThisTypeParameters, $phpDocReturnType, $phpDocThrowType, $deprecatedDescription, $isDeprecated, $isInternal, , $isPure, $acceptsNamedArguments, , $phpDocComment, $asserts,, $phpDocParameterOutTypes] = $this->getPhpDocs($scope, $stmt);
569:
570: foreach ($stmt->params as $param) {
571: $this->processParamNode($stmt, $param, $scope, $nodeCallback);
572: }
573:
574: if ($stmt->returnType !== null) {
575: $nodeCallback($stmt->returnType, $scope);
576: }
577:
578: if (!$isDeprecated) {
579: [$isDeprecated, $deprecatedDescription] = $this->getDeprecatedAttribute($scope, $stmt);
580: }
581:
582: $functionScope = $scope->enterFunction(
583: $stmt,
584: $templateTypeMap,
585: $phpDocParameterTypes,
586: $phpDocReturnType,
587: $phpDocThrowType,
588: $deprecatedDescription,
589: $isDeprecated,
590: $isInternal,
591: $isPure,
592: $acceptsNamedArguments,
593: $asserts,
594: $phpDocComment,
595: $phpDocParameterOutTypes,
596: $phpDocImmediatelyInvokedCallableParameters,
597: $phpDocClosureThisTypeParameters,
598: );
599: $functionReflection = $functionScope->getFunction();
600: if (!$functionReflection instanceof PhpFunctionFromParserNodeReflection) {
601: throw new ShouldNotHappenException();
602: }
603:
604: $nodeCallback(new InFunctionNode($functionReflection, $stmt), $functionScope);
605:
606: $gatheredReturnStatements = [];
607: $gatheredYieldStatements = [];
608: $executionEnds = [];
609: $functionImpurePoints = [];
610: $statementResult = $this->processStmtNodes($stmt, $stmt->stmts, $functionScope, static function (Node $node, Scope $scope) use ($nodeCallback, $functionScope, &$gatheredReturnStatements, &$gatheredYieldStatements, &$executionEnds, &$functionImpurePoints): void {
611: $nodeCallback($node, $scope);
612: if ($scope->getFunction() !== $functionScope->getFunction()) {
613: return;
614: }
615: if ($scope->isInAnonymousFunction()) {
616: return;
617: }
618: if ($node instanceof PropertyAssignNode) {
619: $functionImpurePoints[] = new ImpurePoint(
620: $scope,
621: $node,
622: 'propertyAssign',
623: 'property assignment',
624: true,
625: );
626: return;
627: }
628: if ($node instanceof ExecutionEndNode) {
629: $executionEnds[] = $node;
630: return;
631: }
632: if ($node instanceof Expr\Yield_ || $node instanceof Expr\YieldFrom) {
633: $gatheredYieldStatements[] = $node;
634: }
635: if (!$node instanceof Return_) {
636: return;
637: }
638:
639: $gatheredReturnStatements[] = new ReturnStatement($scope, $node);
640: }, StatementContext::createTopLevel());
641:
642: $nodeCallback(new FunctionReturnStatementsNode(
643: $stmt,
644: $gatheredReturnStatements,
645: $gatheredYieldStatements,
646: $statementResult,
647: $executionEnds,
648: array_merge($statementResult->getImpurePoints(), $functionImpurePoints),
649: $functionReflection,
650: ), $functionScope);
651: } elseif ($stmt instanceof Node\Stmt\ClassMethod) {
652: $hasYield = false;
653: $throwPoints = [];
654: $impurePoints = [];
655: $this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
656: [$templateTypeMap, $phpDocParameterTypes, $phpDocImmediatelyInvokedCallableParameters, $phpDocClosureThisTypeParameters, $phpDocReturnType, $phpDocThrowType, $deprecatedDescription, $isDeprecated, $isInternal, $isFinal, $isPure, $acceptsNamedArguments, $isReadOnly, $phpDocComment, $asserts, $selfOutType, $phpDocParameterOutTypes] = $this->getPhpDocs($scope, $stmt);
657:
658: foreach ($stmt->params as $param) {
659: $this->processParamNode($stmt, $param, $scope, $nodeCallback);
660: }
661:
662: if ($stmt->returnType !== null) {
663: $nodeCallback($stmt->returnType, $scope);
664: }
665:
666: if (!$isDeprecated) {
667: [$isDeprecated, $deprecatedDescription] = $this->getDeprecatedAttribute($scope, $stmt);
668: }
669:
670: $isFromTrait = $stmt->getAttribute('originalTraitMethodName') === '__construct';
671: $isConstructor = $isFromTrait || $stmt->name->toLowerString() === '__construct';
672:
673: $methodScope = $scope->enterClassMethod(
674: $stmt,
675: $templateTypeMap,
676: $phpDocParameterTypes,
677: $phpDocReturnType,
678: $phpDocThrowType,
679: $deprecatedDescription,
680: $isDeprecated,
681: $isInternal,
682: $isFinal,
683: $isPure,
684: $acceptsNamedArguments,
685: $asserts,
686: $selfOutType,
687: $phpDocComment,
688: $phpDocParameterOutTypes,
689: $phpDocImmediatelyInvokedCallableParameters,
690: $phpDocClosureThisTypeParameters,
691: $isConstructor,
692: );
693:
694: if (!$scope->isInClass()) {
695: throw new ShouldNotHappenException();
696: }
697:
698: $classReflection = $scope->getClassReflection();
699:
700: if ($isConstructor) {
701: foreach ($stmt->params as $param) {
702: if ($param->flags === 0 && $param->hooks === []) {
703: continue;
704: }
705:
706: if (!$param->var instanceof Variable || !is_string($param->var->name) || $param->var->name === '') {
707: throw new ShouldNotHappenException();
708: }
709: $phpDoc = null;
710: if ($param->getDocComment() !== null) {
711: $phpDoc = $param->getDocComment()->getText();
712: }
713: $nodeCallback(new ClassPropertyNode(
714: $param->var->name,
715: $param->flags,
716: $param->type !== null ? ParserNodeTypeToPHPStanType::resolve($param->type, $classReflection) : null,
717: null,
718: $phpDoc,
719: $phpDocParameterTypes[$param->var->name] ?? null,
720: true,
721: $isFromTrait,
722: $param,
723: $isReadOnly,
724: $scope->isInTrait(),
725: $classReflection->isReadOnly(),
726: false,
727: $classReflection,
728: ), $methodScope);
729: $this->processPropertyHooks(
730: $stmt,
731: $param->type,
732: $phpDocParameterTypes[$param->var->name] ?? null,
733: $param->var->name,
734: $param->hooks,
735: $scope,
736: $nodeCallback,
737: );
738: $methodScope = $methodScope->assignExpression(new PropertyInitializationExpr($param->var->name), new MixedType(), new MixedType());
739: }
740: }
741:
742: if ($stmt->getAttribute('virtual', false) === false) {
743: $methodReflection = $methodScope->getFunction();
744: if (!$methodReflection instanceof PhpMethodFromParserNodeReflection) {
745: throw new ShouldNotHappenException();
746: }
747: $nodeCallback(new InClassMethodNode($classReflection, $methodReflection, $stmt), $methodScope);
748: }
749:
750: if ($stmt->stmts !== null) {
751: $gatheredReturnStatements = [];
752: $gatheredYieldStatements = [];
753: $executionEnds = [];
754: $methodImpurePoints = [];
755: $statementResult = $this->processStmtNodes($stmt, $stmt->stmts, $methodScope, static function (Node $node, Scope $scope) use ($nodeCallback, $methodScope, &$gatheredReturnStatements, &$gatheredYieldStatements, &$executionEnds, &$methodImpurePoints): void {
756: $nodeCallback($node, $scope);
757: if ($scope->getFunction() !== $methodScope->getFunction()) {
758: return;
759: }
760: if ($scope->isInAnonymousFunction()) {
761: return;
762: }
763: if ($node instanceof PropertyAssignNode) {
764: if (
765: $node->getPropertyFetch() instanceof Expr\PropertyFetch
766: && $scope->getFunction() instanceof PhpMethodFromParserNodeReflection
767: && $scope->getFunction()->getDeclaringClass()->hasConstructor()
768: && $scope->getFunction()->getDeclaringClass()->getConstructor()->getName() === $scope->getFunction()->getName()
769: && TypeUtils::findThisType($scope->getType($node->getPropertyFetch()->var)) !== null
770: ) {
771: return;
772: }
773: $methodImpurePoints[] = new ImpurePoint(
774: $scope,
775: $node,
776: 'propertyAssign',
777: 'property assignment',
778: true,
779: );
780: return;
781: }
782: if ($node instanceof ExecutionEndNode) {
783: $executionEnds[] = $node;
784: return;
785: }
786: if ($node instanceof Expr\Yield_ || $node instanceof Expr\YieldFrom) {
787: $gatheredYieldStatements[] = $node;
788: }
789: if (!$node instanceof Return_) {
790: return;
791: }
792:
793: $gatheredReturnStatements[] = new ReturnStatement($scope, $node);
794: }, StatementContext::createTopLevel());
795:
796: $methodReflection = $methodScope->getFunction();
797: if (!$methodReflection instanceof PhpMethodFromParserNodeReflection) {
798: throw new ShouldNotHappenException();
799: }
800:
801: $nodeCallback(new MethodReturnStatementsNode(
802: $stmt,
803: $gatheredReturnStatements,
804: $gatheredYieldStatements,
805: $statementResult,
806: $executionEnds,
807: array_merge($statementResult->getImpurePoints(), $methodImpurePoints),
808: $classReflection,
809: $methodReflection,
810: ), $methodScope);
811:
812: if ($isConstructor && $this->narrowMethodScopeFromConstructor) {
813: $finalScope = null;
814:
815: foreach ($executionEnds as $executionEnd) {
816: if ($executionEnd->getStatementResult()->isAlwaysTerminating()) {
817: continue;
818: }
819:
820: $endScope = $executionEnd->getStatementResult()->getScope();
821: if ($finalScope === null) {
822: $finalScope = $endScope;
823: continue;
824: }
825:
826: $finalScope = $finalScope->mergeWith($endScope);
827: }
828:
829: foreach ($gatheredReturnStatements as $statement) {
830: if ($finalScope === null) {
831: $finalScope = $statement->getScope();
832: continue;
833: }
834:
835: $finalScope = $finalScope->mergeWith($statement->getScope());
836: }
837:
838: if ($finalScope !== null) {
839: $scope = $finalScope->rememberConstructorScope();
840: }
841:
842: }
843: }
844: } elseif ($stmt instanceof Echo_) {
845: $hasYield = false;
846: $throwPoints = [];
847: $isAlwaysTerminating = false;
848: foreach ($stmt->exprs as $echoExpr) {
849: $result = $this->processExprNode($stmt, $echoExpr, $scope, $nodeCallback, ExpressionContext::createDeep());
850: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
851: $scope = $result->getScope();
852: $hasYield = $hasYield || $result->hasYield();
853: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
854: }
855:
856: $throwPoints = $overridingThrowPoints ?? $throwPoints;
857: $impurePoints = [
858: new ImpurePoint($scope, $stmt, 'echo', 'echo', true),
859: ];
860: return new StatementResult($scope, $hasYield, $isAlwaysTerminating, [], $throwPoints, $impurePoints);
861: } elseif ($stmt instanceof Return_) {
862: if ($stmt->expr !== null) {
863: $result = $this->processExprNode($stmt, $stmt->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
864: $throwPoints = $result->getThrowPoints();
865: $impurePoints = $result->getImpurePoints();
866: $scope = $result->getScope();
867: $hasYield = $result->hasYield();
868: } else {
869: $hasYield = false;
870: $throwPoints = [];
871: $impurePoints = [];
872: }
873:
874: return new StatementResult($scope, $hasYield, true, [
875: new StatementExitPoint($stmt, $scope),
876: ], $overridingThrowPoints ?? $throwPoints, $impurePoints);
877: } elseif ($stmt instanceof Continue_ || $stmt instanceof Break_) {
878: if ($stmt->num !== null) {
879: $result = $this->processExprNode($stmt, $stmt->num, $scope, $nodeCallback, ExpressionContext::createDeep());
880: $scope = $result->getScope();
881: $hasYield = $result->hasYield();
882: $throwPoints = $result->getThrowPoints();
883: $impurePoints = $result->getImpurePoints();
884: } else {
885: $hasYield = false;
886: $throwPoints = [];
887: $impurePoints = [];
888: }
889:
890: return new StatementResult($scope, $hasYield, true, [
891: new StatementExitPoint($stmt, $scope),
892: ], $overridingThrowPoints ?? $throwPoints, $impurePoints);
893: } elseif ($stmt instanceof Node\Stmt\Expression) {
894: if ($stmt->expr instanceof Expr\Throw_) {
895: $scope = $stmtScope;
896: }
897: $earlyTerminationExpr = $this->findEarlyTerminatingExpr($stmt->expr, $scope);
898: $hasAssign = false;
899: $currentScope = $scope;
900: $result = $this->processExprNode($stmt, $stmt->expr, $scope, static function (Node $node, Scope $scope) use ($nodeCallback, $currentScope, &$hasAssign): void {
901: $nodeCallback($node, $scope);
902: if ($scope->getAnonymousFunctionReflection() !== $currentScope->getAnonymousFunctionReflection()) {
903: return;
904: }
905: if ($scope->getFunction() !== $currentScope->getFunction()) {
906: return;
907: }
908: if (!$node instanceof VariableAssignNode && !$node instanceof PropertyAssignNode) {
909: return;
910: }
911:
912: $hasAssign = true;
913: }, ExpressionContext::createTopLevel());
914: $throwPoints = array_filter($result->getThrowPoints(), static fn ($throwPoint) => $throwPoint->isExplicit());
915: if (
916: count($result->getImpurePoints()) === 0
917: && count($throwPoints) === 0
918: && !$stmt->expr instanceof Expr\PostInc
919: && !$stmt->expr instanceof Expr\PreInc
920: && !$stmt->expr instanceof Expr\PostDec
921: && !$stmt->expr instanceof Expr\PreDec
922: ) {
923: $nodeCallback(new NoopExpressionNode($stmt->expr, $hasAssign), $scope);
924: }
925: $scope = $result->getScope();
926: $scope = $scope->filterBySpecifiedTypes($this->typeSpecifier->specifyTypesInCondition(
927: $scope,
928: $stmt->expr,
929: TypeSpecifierContext::createNull(),
930: ));
931: $hasYield = $result->hasYield();
932: $throwPoints = $result->getThrowPoints();
933: $impurePoints = $result->getImpurePoints();
934: $isAlwaysTerminating = $result->isAlwaysTerminating();
935:
936: if ($earlyTerminationExpr !== null) {
937: return new StatementResult($scope, $hasYield, true, [
938: new StatementExitPoint($stmt, $scope),
939: ], $overridingThrowPoints ?? $throwPoints, $impurePoints);
940: }
941: return new StatementResult($scope, $hasYield, $isAlwaysTerminating, [], $overridingThrowPoints ?? $throwPoints, $impurePoints);
942: } elseif ($stmt instanceof Node\Stmt\Namespace_) {
943: if ($stmt->name !== null) {
944: $scope = $scope->enterNamespace($stmt->name->toString());
945: }
946:
947: $scope = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context)->getScope();
948: $hasYield = false;
949: $throwPoints = [];
950: $impurePoints = [];
951: } elseif ($stmt instanceof Node\Stmt\Trait_) {
952: return new StatementResult($scope, false, false, [], [], []);
953: } elseif ($stmt instanceof Node\Stmt\ClassLike) {
954: if (!$context->isTopLevel()) {
955: return new StatementResult($scope, false, false, [], [], []);
956: }
957: $hasYield = false;
958: $throwPoints = [];
959: $impurePoints = [];
960: if (isset($stmt->namespacedName)) {
961: $classReflection = $this->getCurrentClassReflection($stmt, $stmt->namespacedName->toString(), $scope);
962: $classScope = $scope->enterClass($classReflection);
963: $nodeCallback(new InClassNode($stmt, $classReflection), $classScope);
964: } elseif ($stmt instanceof Class_) {
965: if ($stmt->name === null) {
966: throw new ShouldNotHappenException();
967: }
968: if (!$stmt->isAnonymous()) {
969: $classReflection = $this->reflectionProvider->getClass($stmt->name->toString());
970: } else {
971: $classReflection = $this->reflectionProvider->getAnonymousClassReflection($stmt, $scope);
972: }
973: $classScope = $scope->enterClass($classReflection);
974: $nodeCallback(new InClassNode($stmt, $classReflection), $classScope);
975: } else {
976: throw new ShouldNotHappenException();
977: }
978:
979: $classStatementsGatherer = new ClassStatementsGatherer($classReflection, $nodeCallback);
980: $this->processAttributeGroups($stmt, $stmt->attrGroups, $classScope, $classStatementsGatherer);
981:
982: $classLikeStatements = $stmt->stmts;
983: if ($this->narrowMethodScopeFromConstructor) {
984: // analyze static methods first; constructor next; instance methods and property hooks last so we can carry over the scope
985: usort($classLikeStatements, static function ($a, $b) {
986: if ($a instanceof Node\Stmt\Property) {
987: return 1;
988: }
989: if ($b instanceof Node\Stmt\Property) {
990: return -1;
991: }
992:
993: if (!$a instanceof Node\Stmt\ClassMethod || !$b instanceof Node\Stmt\ClassMethod) {
994: return 0;
995: }
996:
997: return [!$a->isStatic(), $a->name->toLowerString() !== '__construct'] <=> [!$b->isStatic(), $b->name->toLowerString() !== '__construct'];
998: });
999: }
1000:
1001: $this->processStmtNodes($stmt, $classLikeStatements, $classScope, $classStatementsGatherer, $context);
1002: $nodeCallback(new ClassPropertiesNode($stmt, $this->readWritePropertiesExtensionProvider, $classStatementsGatherer->getProperties(), $classStatementsGatherer->getPropertyUsages(), $classStatementsGatherer->getMethodCalls(), $classStatementsGatherer->getReturnStatementsNodes(), $classStatementsGatherer->getPropertyAssigns(), $classReflection), $classScope);
1003: $nodeCallback(new ClassMethodsNode($stmt, $classStatementsGatherer->getMethods(), $classStatementsGatherer->getMethodCalls(), $classReflection), $classScope);
1004: $nodeCallback(new ClassConstantsNode($stmt, $classStatementsGatherer->getConstants(), $classStatementsGatherer->getConstantFetches(), $classReflection), $classScope);
1005: $classReflection->evictPrivateSymbols();
1006: $this->calledMethodResults = [];
1007: } elseif ($stmt instanceof Node\Stmt\Property) {
1008: $hasYield = false;
1009: $throwPoints = [];
1010: $impurePoints = [];
1011: $this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
1012:
1013: $nativePropertyType = $stmt->type !== null ? ParserNodeTypeToPHPStanType::resolve($stmt->type, $scope->getClassReflection()) : null;
1014:
1015: [,,,,,,,,,,,,$isReadOnly, $docComment, ,,,$varTags, $isAllowedPrivateMutation] = $this->getPhpDocs($scope, $stmt);
1016: $phpDocType = null;
1017: if (isset($varTags[0]) && count($varTags) === 1) {
1018: $phpDocType = $varTags[0]->getType();
1019: }
1020:
1021: foreach ($stmt->props as $prop) {
1022: $nodeCallback($prop, $scope);
1023: if ($prop->default !== null) {
1024: $this->processExprNode($stmt, $prop->default, $scope, $nodeCallback, ExpressionContext::createDeep());
1025: }
1026:
1027: if (!$scope->isInClass()) {
1028: throw new ShouldNotHappenException();
1029: }
1030: $propertyName = $prop->name->toString();
1031:
1032: if ($phpDocType === null) {
1033: if (isset($varTags[$propertyName])) {
1034: $phpDocType = $varTags[$propertyName]->getType();
1035: }
1036: }
1037:
1038: $propStmt = clone $stmt;
1039: $propStmt->setAttributes($prop->getAttributes());
1040: $nodeCallback(
1041: new ClassPropertyNode(
1042: $propertyName,
1043: $stmt->flags,
1044: $nativePropertyType,
1045: $prop->default,
1046: $docComment,
1047: $phpDocType,
1048: false,
1049: false,
1050: $propStmt,
1051: $isReadOnly,
1052: $scope->isInTrait(),
1053: $scope->getClassReflection()->isReadOnly(),
1054: $isAllowedPrivateMutation,
1055: $scope->getClassReflection(),
1056: ),
1057: $scope,
1058: );
1059: }
1060:
1061: if (count($stmt->hooks) > 0) {
1062: if (!isset($propertyName)) {
1063: throw new ShouldNotHappenException('Property name should be known when analysing hooks.');
1064: }
1065: $this->processPropertyHooks(
1066: $stmt,
1067: $stmt->type,
1068: $phpDocType,
1069: $propertyName,
1070: $stmt->hooks,
1071: $scope,
1072: $nodeCallback,
1073: );
1074: }
1075:
1076: if ($stmt->type !== null) {
1077: $nodeCallback($stmt->type, $scope);
1078: }
1079: } elseif ($stmt instanceof If_) {
1080: $conditionType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($stmt->cond) : $scope->getNativeType($stmt->cond))->toBoolean();
1081: $ifAlwaysTrue = $conditionType->isTrue()->yes();
1082: $condResult = $this->processExprNode($stmt, $stmt->cond, $scope, $nodeCallback, ExpressionContext::createDeep());
1083: $exitPoints = [];
1084: $throwPoints = $overridingThrowPoints ?? $condResult->getThrowPoints();
1085: $impurePoints = $condResult->getImpurePoints();
1086: $endStatements = [];
1087: $finalScope = null;
1088: $alwaysTerminating = true;
1089: $hasYield = $condResult->hasYield();
1090:
1091: $branchScopeStatementResult = $this->processStmtNodes($stmt, $stmt->stmts, $condResult->getTruthyScope(), $nodeCallback, $context);
1092:
1093: if (!$conditionType->isTrue()->no()) {
1094: $exitPoints = $branchScopeStatementResult->getExitPoints();
1095: $throwPoints = array_merge($throwPoints, $branchScopeStatementResult->getThrowPoints());
1096: $impurePoints = array_merge($impurePoints, $branchScopeStatementResult->getImpurePoints());
1097: $branchScope = $branchScopeStatementResult->getScope();
1098: $finalScope = $branchScopeStatementResult->isAlwaysTerminating() ? null : $branchScope;
1099: $alwaysTerminating = $branchScopeStatementResult->isAlwaysTerminating();
1100: if (count($branchScopeStatementResult->getEndStatements()) > 0) {
1101: $endStatements = array_merge($endStatements, $branchScopeStatementResult->getEndStatements());
1102: } elseif (count($stmt->stmts) > 0) {
1103: $endStatements[] = new EndStatementResult($stmt->stmts[count($stmt->stmts) - 1], $branchScopeStatementResult);
1104: } else {
1105: $endStatements[] = new EndStatementResult($stmt, $branchScopeStatementResult);
1106: }
1107: $hasYield = $branchScopeStatementResult->hasYield() || $hasYield;
1108: }
1109:
1110: $scope = $condResult->getFalseyScope();
1111: $lastElseIfConditionIsTrue = false;
1112:
1113: $condScope = $scope;
1114: foreach ($stmt->elseifs as $elseif) {
1115: $nodeCallback($elseif, $scope);
1116: $elseIfConditionType = ($this->treatPhpDocTypesAsCertain ? $condScope->getType($elseif->cond) : $scope->getNativeType($elseif->cond))->toBoolean();
1117: $condResult = $this->processExprNode($stmt, $elseif->cond, $condScope, $nodeCallback, ExpressionContext::createDeep());
1118: $throwPoints = array_merge($throwPoints, $condResult->getThrowPoints());
1119: $impurePoints = array_merge($impurePoints, $condResult->getImpurePoints());
1120: $condScope = $condResult->getScope();
1121: $branchScopeStatementResult = $this->processStmtNodes($elseif, $elseif->stmts, $condResult->getTruthyScope(), $nodeCallback, $context);
1122:
1123: if (
1124: !$ifAlwaysTrue
1125: && !$lastElseIfConditionIsTrue
1126: && !$elseIfConditionType->isTrue()->no()
1127: ) {
1128: $exitPoints = array_merge($exitPoints, $branchScopeStatementResult->getExitPoints());
1129: $throwPoints = array_merge($throwPoints, $branchScopeStatementResult->getThrowPoints());
1130: $impurePoints = array_merge($impurePoints, $branchScopeStatementResult->getImpurePoints());
1131: $branchScope = $branchScopeStatementResult->getScope();
1132: $finalScope = $branchScopeStatementResult->isAlwaysTerminating() ? $finalScope : $branchScope->mergeWith($finalScope);
1133: $alwaysTerminating = $alwaysTerminating && $branchScopeStatementResult->isAlwaysTerminating();
1134: if (count($branchScopeStatementResult->getEndStatements()) > 0) {
1135: $endStatements = array_merge($endStatements, $branchScopeStatementResult->getEndStatements());
1136: } elseif (count($elseif->stmts) > 0) {
1137: $endStatements[] = new EndStatementResult($elseif->stmts[count($elseif->stmts) - 1], $branchScopeStatementResult);
1138: } else {
1139: $endStatements[] = new EndStatementResult($elseif, $branchScopeStatementResult);
1140: }
1141: $hasYield = $hasYield || $branchScopeStatementResult->hasYield();
1142: }
1143:
1144: if (
1145: $elseIfConditionType->isTrue()->yes()
1146: ) {
1147: $lastElseIfConditionIsTrue = true;
1148: }
1149:
1150: $condScope = $condScope->filterByFalseyValue($elseif->cond);
1151: $scope = $condScope;
1152: }
1153:
1154: if ($stmt->else === null) {
1155: if (!$ifAlwaysTrue && !$lastElseIfConditionIsTrue) {
1156: $finalScope = $scope->mergeWith($finalScope);
1157: $alwaysTerminating = false;
1158: }
1159: } else {
1160: $nodeCallback($stmt->else, $scope);
1161: $branchScopeStatementResult = $this->processStmtNodes($stmt->else, $stmt->else->stmts, $scope, $nodeCallback, $context);
1162:
1163: if (!$ifAlwaysTrue && !$lastElseIfConditionIsTrue) {
1164: $exitPoints = array_merge($exitPoints, $branchScopeStatementResult->getExitPoints());
1165: $throwPoints = array_merge($throwPoints, $branchScopeStatementResult->getThrowPoints());
1166: $impurePoints = array_merge($impurePoints, $branchScopeStatementResult->getImpurePoints());
1167: $branchScope = $branchScopeStatementResult->getScope();
1168: $finalScope = $branchScopeStatementResult->isAlwaysTerminating() ? $finalScope : $branchScope->mergeWith($finalScope);
1169: $alwaysTerminating = $alwaysTerminating && $branchScopeStatementResult->isAlwaysTerminating();
1170: if (count($branchScopeStatementResult->getEndStatements()) > 0) {
1171: $endStatements = array_merge($endStatements, $branchScopeStatementResult->getEndStatements());
1172: } elseif (count($stmt->else->stmts) > 0) {
1173: $endStatements[] = new EndStatementResult($stmt->else->stmts[count($stmt->else->stmts) - 1], $branchScopeStatementResult);
1174: } else {
1175: $endStatements[] = new EndStatementResult($stmt->else, $branchScopeStatementResult);
1176: }
1177: $hasYield = $hasYield || $branchScopeStatementResult->hasYield();
1178: }
1179: }
1180:
1181: if ($finalScope === null) {
1182: $finalScope = $scope;
1183: }
1184:
1185: if ($stmt->else === null && !$ifAlwaysTrue && !$lastElseIfConditionIsTrue) {
1186: $endStatements[] = new EndStatementResult($stmt, new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPoints, $throwPoints, $impurePoints));
1187: }
1188:
1189: return new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPoints, $throwPoints, $impurePoints, $endStatements);
1190: } elseif ($stmt instanceof Node\Stmt\TraitUse) {
1191: $hasYield = false;
1192: $throwPoints = [];
1193: $impurePoints = [];
1194: $this->processTraitUse($stmt, $scope, $nodeCallback);
1195: } elseif ($stmt instanceof Foreach_) {
1196: $condResult = $this->processExprNode($stmt, $stmt->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
1197: $throwPoints = $overridingThrowPoints ?? $condResult->getThrowPoints();
1198: $impurePoints = $condResult->getImpurePoints();
1199: $scope = $condResult->getScope();
1200: $arrayComparisonExpr = new BinaryOp\NotIdentical(
1201: $stmt->expr,
1202: new Array_([]),
1203: );
1204: if ($stmt->expr instanceof Variable && is_string($stmt->expr->name)) {
1205: $scope = $this->processVarAnnotation($scope, [$stmt->expr->name], $stmt);
1206: }
1207: $nodeCallback(new InForeachNode($stmt), $scope);
1208: $originalScope = $scope;
1209: $bodyScope = $scope;
1210:
1211: if ($context->isTopLevel()) {
1212: $originalScope = $this->polluteScopeWithAlwaysIterableForeach ? $scope->filterByTruthyValue($arrayComparisonExpr) : $scope;
1213: $bodyScope = $this->enterForeach($originalScope, $originalScope, $stmt);
1214: $count = 0;
1215: do {
1216: $prevScope = $bodyScope;
1217: $bodyScope = $bodyScope->mergeWith($this->polluteScopeWithAlwaysIterableForeach ? $scope->filterByTruthyValue($arrayComparisonExpr) : $scope);
1218: $bodyScope = $this->enterForeach($bodyScope, $originalScope, $stmt);
1219: $bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
1220: }, $context->enterDeep())->filterOutLoopExitPoints();
1221: $bodyScope = $bodyScopeResult->getScope();
1222: foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1223: $bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
1224: }
1225: if ($bodyScope->equals($prevScope)) {
1226: break;
1227: }
1228:
1229: if ($count >= self::GENERALIZE_AFTER_ITERATION) {
1230: $bodyScope = $prevScope->generalizeWith($bodyScope);
1231: }
1232: $count++;
1233: } while ($count < self::LOOP_SCOPE_ITERATIONS);
1234: }
1235:
1236: $bodyScope = $bodyScope->mergeWith($this->polluteScopeWithAlwaysIterableForeach ? $scope->filterByTruthyValue($arrayComparisonExpr) : $scope);
1237: $bodyScope = $this->enterForeach($bodyScope, $originalScope, $stmt);
1238: $finalScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
1239: $finalScope = $finalScopeResult->getScope();
1240: foreach ($finalScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1241: $finalScope = $continueExitPoint->getScope()->mergeWith($finalScope);
1242: }
1243: foreach ($finalScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
1244: $finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
1245: }
1246:
1247: $exprType = $scope->getType($stmt->expr);
1248: $isIterableAtLeastOnce = $exprType->isIterableAtLeastOnce();
1249: if ($exprType->isIterable()->no() || $isIterableAtLeastOnce->maybe()) {
1250: $finalScope = $finalScope->mergeWith($scope->filterByTruthyValue(new BooleanOr(
1251: new BinaryOp\Identical(
1252: $stmt->expr,
1253: new Array_([]),
1254: ),
1255: new FuncCall(new Name\FullyQualified('is_object'), [
1256: new Arg($stmt->expr),
1257: ]),
1258: )));
1259: } elseif ($isIterableAtLeastOnce->no() || $finalScopeResult->isAlwaysTerminating()) {
1260: $finalScope = $scope;
1261: } elseif (!$this->polluteScopeWithAlwaysIterableForeach) {
1262: $finalScope = $scope->processAlwaysIterableForeachScopeWithoutPollute($finalScope);
1263: // get types from finalScope, but don't create new variables
1264: }
1265:
1266: if (!$isIterableAtLeastOnce->no()) {
1267: $throwPoints = array_merge($throwPoints, $finalScopeResult->getThrowPoints());
1268: $impurePoints = array_merge($impurePoints, $finalScopeResult->getImpurePoints());
1269: }
1270: if (!(new ObjectType(Traversable::class))->isSuperTypeOf($scope->getType($stmt->expr))->no()) {
1271: $throwPoints[] = ThrowPoint::createImplicit($scope, $stmt->expr);
1272: }
1273:
1274: return new StatementResult(
1275: $finalScope,
1276: $finalScopeResult->hasYield() || $condResult->hasYield(),
1277: $isIterableAtLeastOnce->yes() && $finalScopeResult->isAlwaysTerminating(),
1278: $finalScopeResult->getExitPointsForOuterLoop(),
1279: $throwPoints,
1280: $impurePoints,
1281: );
1282: } elseif ($stmt instanceof While_) {
1283: $condResult = $this->processExprNode($stmt, $stmt->cond, $scope, static function (): void {
1284: }, ExpressionContext::createDeep());
1285: $beforeCondBooleanType = ($this->treatPhpDocTypesAsCertain ? $scope->getType($stmt->cond) : $scope->getNativeType($stmt->cond))->toBoolean();
1286: $condScope = $condResult->getFalseyScope();
1287: if (!$context->isTopLevel() && $beforeCondBooleanType->isFalse()->yes()) {
1288: if (!$this->polluteScopeWithLoopInitialAssignments) {
1289: $scope = $condScope->mergeWith($scope);
1290: }
1291:
1292: return new StatementResult(
1293: $scope,
1294: $condResult->hasYield(),
1295: false,
1296: [],
1297: $condResult->getThrowPoints(),
1298: $condResult->getImpurePoints(),
1299: );
1300: }
1301: $bodyScope = $condResult->getTruthyScope();
1302:
1303: if ($context->isTopLevel()) {
1304: $count = 0;
1305: do {
1306: $prevScope = $bodyScope;
1307: $bodyScope = $bodyScope->mergeWith($scope);
1308: $bodyScope = $this->processExprNode($stmt, $stmt->cond, $bodyScope, static function (): void {
1309: }, ExpressionContext::createDeep())->getTruthyScope();
1310: $bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
1311: }, $context->enterDeep())->filterOutLoopExitPoints();
1312: $bodyScope = $bodyScopeResult->getScope();
1313: foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1314: $bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
1315: }
1316: if ($bodyScope->equals($prevScope)) {
1317: break;
1318: }
1319:
1320: if ($count >= self::GENERALIZE_AFTER_ITERATION) {
1321: $bodyScope = $prevScope->generalizeWith($bodyScope);
1322: }
1323: $count++;
1324: } while ($count < self::LOOP_SCOPE_ITERATIONS);
1325: }
1326:
1327: $bodyScope = $bodyScope->mergeWith($scope);
1328: $bodyScopeMaybeRan = $bodyScope;
1329: $bodyScope = $this->processExprNode($stmt, $stmt->cond, $bodyScope, $nodeCallback, ExpressionContext::createDeep())->getTruthyScope();
1330: $finalScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
1331: $finalScope = $finalScopeResult->getScope()->filterByFalseyValue($stmt->cond);
1332:
1333: $condBooleanType = ($this->treatPhpDocTypesAsCertain ? $bodyScopeMaybeRan->getType($stmt->cond) : $bodyScopeMaybeRan->getNativeType($stmt->cond))->toBoolean();
1334: $alwaysIterates = $condBooleanType->isTrue()->yes() && $context->isTopLevel();
1335: $neverIterates = $condBooleanType->isFalse()->yes() && $context->isTopLevel();
1336: if (!$alwaysIterates) {
1337: foreach ($finalScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1338: $finalScope = $finalScope->mergeWith($continueExitPoint->getScope());
1339: }
1340: }
1341:
1342: $breakExitPoints = $finalScopeResult->getExitPointsByType(Break_::class);
1343: foreach ($breakExitPoints as $breakExitPoint) {
1344: $finalScope = $finalScope->mergeWith($breakExitPoint->getScope());
1345: }
1346:
1347: $isIterableAtLeastOnce = $beforeCondBooleanType->isTrue()->yes();
1348: $nodeCallback(new BreaklessWhileLoopNode($stmt, $finalScopeResult->getExitPoints()), $bodyScopeMaybeRan);
1349:
1350: if ($alwaysIterates) {
1351: $isAlwaysTerminating = count($finalScopeResult->getExitPointsByType(Break_::class)) === 0;
1352: } elseif ($isIterableAtLeastOnce) {
1353: $isAlwaysTerminating = $finalScopeResult->isAlwaysTerminating();
1354: } else {
1355: $isAlwaysTerminating = false;
1356: }
1357: if (!$isIterableAtLeastOnce) {
1358: if (!$this->polluteScopeWithLoopInitialAssignments) {
1359: $condScope = $condScope->mergeWith($scope);
1360: }
1361: $finalScope = $finalScope->mergeWith($condScope);
1362: }
1363:
1364: $throwPoints = $overridingThrowPoints ?? $condResult->getThrowPoints();
1365: $impurePoints = $condResult->getImpurePoints();
1366: if (!$neverIterates) {
1367: $throwPoints = array_merge($throwPoints, $finalScopeResult->getThrowPoints());
1368: $impurePoints = array_merge($impurePoints, $finalScopeResult->getImpurePoints());
1369: }
1370:
1371: return new StatementResult(
1372: $finalScope,
1373: $finalScopeResult->hasYield() || $condResult->hasYield(),
1374: $isAlwaysTerminating,
1375: $finalScopeResult->getExitPointsForOuterLoop(),
1376: $throwPoints,
1377: $impurePoints,
1378: );
1379: } elseif ($stmt instanceof Do_) {
1380: $finalScope = null;
1381: $bodyScope = $scope;
1382: $count = 0;
1383: $hasYield = false;
1384: $throwPoints = [];
1385: $impurePoints = [];
1386:
1387: if ($context->isTopLevel()) {
1388: do {
1389: $prevScope = $bodyScope;
1390: $bodyScope = $bodyScope->mergeWith($scope);
1391: $bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
1392: }, $context->enterDeep())->filterOutLoopExitPoints();
1393: $alwaysTerminating = $bodyScopeResult->isAlwaysTerminating();
1394: $bodyScope = $bodyScopeResult->getScope();
1395: foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1396: $bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
1397: }
1398: $finalScope = $alwaysTerminating ? $finalScope : $bodyScope->mergeWith($finalScope);
1399: foreach ($bodyScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
1400: $finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
1401: }
1402: $bodyScope = $this->processExprNode($stmt, $stmt->cond, $bodyScope, static function (): void {
1403: }, ExpressionContext::createDeep())->getTruthyScope();
1404: if ($bodyScope->equals($prevScope)) {
1405: break;
1406: }
1407:
1408: if ($count >= self::GENERALIZE_AFTER_ITERATION) {
1409: $bodyScope = $prevScope->generalizeWith($bodyScope);
1410: }
1411: $count++;
1412: } while ($count < self::LOOP_SCOPE_ITERATIONS);
1413:
1414: $bodyScope = $bodyScope->mergeWith($scope);
1415: }
1416:
1417: $bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
1418: $bodyScope = $bodyScopeResult->getScope();
1419: foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1420: $bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
1421: }
1422: $condBooleanType = ($this->treatPhpDocTypesAsCertain ? $bodyScope->getType($stmt->cond) : $bodyScope->getNativeType($stmt->cond))->toBoolean();
1423: $alwaysIterates = $condBooleanType->isTrue()->yes() && $context->isTopLevel();
1424:
1425: $nodeCallback(new DoWhileLoopConditionNode($stmt->cond, $bodyScopeResult->getExitPoints()), $bodyScope);
1426:
1427: if ($alwaysIterates) {
1428: $alwaysTerminating = count($bodyScopeResult->getExitPointsByType(Break_::class)) === 0;
1429: } else {
1430: $alwaysTerminating = $bodyScopeResult->isAlwaysTerminating();
1431: }
1432: $finalScope = $alwaysTerminating ? $finalScope : $bodyScope->mergeWith($finalScope);
1433: if ($finalScope === null) {
1434: $finalScope = $scope;
1435: }
1436: if (!$alwaysTerminating) {
1437: $condResult = $this->processExprNode($stmt, $stmt->cond, $bodyScope, $nodeCallback, ExpressionContext::createDeep());
1438: $hasYield = $condResult->hasYield();
1439: $throwPoints = $condResult->getThrowPoints();
1440: $impurePoints = $condResult->getImpurePoints();
1441: $finalScope = $condResult->getFalseyScope();
1442: } else {
1443: $this->processExprNode($stmt, $stmt->cond, $bodyScope, $nodeCallback, ExpressionContext::createDeep());
1444: }
1445: foreach ($bodyScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
1446: $finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
1447: }
1448:
1449: return new StatementResult(
1450: $finalScope,
1451: $bodyScopeResult->hasYield() || $hasYield,
1452: $alwaysTerminating,
1453: $bodyScopeResult->getExitPointsForOuterLoop(),
1454: array_merge($throwPoints, $bodyScopeResult->getThrowPoints()),
1455: array_merge($impurePoints, $bodyScopeResult->getImpurePoints()),
1456: );
1457: } elseif ($stmt instanceof For_) {
1458: $initScope = $scope;
1459: $hasYield = false;
1460: $throwPoints = [];
1461: $impurePoints = [];
1462: foreach ($stmt->init as $initExpr) {
1463: $initResult = $this->processExprNode($stmt, $initExpr, $initScope, $nodeCallback, ExpressionContext::createTopLevel());
1464: $initScope = $initResult->getScope();
1465: $hasYield = $hasYield || $initResult->hasYield();
1466: $throwPoints = array_merge($throwPoints, $initResult->getThrowPoints());
1467: $impurePoints = array_merge($impurePoints, $initResult->getImpurePoints());
1468: }
1469:
1470: $bodyScope = $initScope;
1471: $isIterableAtLeastOnce = TrinaryLogic::createYes();
1472: $lastCondExpr = $stmt->cond[count($stmt->cond) - 1] ?? null;
1473: foreach ($stmt->cond as $condExpr) {
1474: $condResult = $this->processExprNode($stmt, $condExpr, $bodyScope, static function (): void {
1475: }, ExpressionContext::createDeep());
1476: $initScope = $condResult->getScope();
1477: $condResultScope = $condResult->getScope();
1478:
1479: if ($condExpr === $lastCondExpr) {
1480: $condTruthiness = ($this->treatPhpDocTypesAsCertain ? $condResultScope->getType($condExpr) : $condResultScope->getNativeType($condExpr))->toBoolean();
1481: $isIterableAtLeastOnce = $isIterableAtLeastOnce->and($condTruthiness->isTrue());
1482: }
1483:
1484: $hasYield = $hasYield || $condResult->hasYield();
1485: $throwPoints = array_merge($throwPoints, $condResult->getThrowPoints());
1486: $impurePoints = array_merge($impurePoints, $condResult->getImpurePoints());
1487: $bodyScope = $condResult->getTruthyScope();
1488: }
1489:
1490: if ($context->isTopLevel()) {
1491: $count = 0;
1492: do {
1493: $prevScope = $bodyScope;
1494: $bodyScope = $bodyScope->mergeWith($initScope);
1495: if ($lastCondExpr !== null) {
1496: $bodyScope = $this->processExprNode($stmt, $lastCondExpr, $bodyScope, static function (): void {
1497: }, ExpressionContext::createDeep())->getTruthyScope();
1498: }
1499: $bodyScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, static function (): void {
1500: }, $context->enterDeep())->filterOutLoopExitPoints();
1501: $bodyScope = $bodyScopeResult->getScope();
1502: foreach ($bodyScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1503: $bodyScope = $bodyScope->mergeWith($continueExitPoint->getScope());
1504: }
1505: foreach ($stmt->loop as $loopExpr) {
1506: $exprResult = $this->processExprNode($stmt, $loopExpr, $bodyScope, static function (): void {
1507: }, ExpressionContext::createTopLevel());
1508: $bodyScope = $exprResult->getScope();
1509: $hasYield = $hasYield || $exprResult->hasYield();
1510: $throwPoints = array_merge($throwPoints, $exprResult->getThrowPoints());
1511: $impurePoints = array_merge($impurePoints, $exprResult->getImpurePoints());
1512: }
1513:
1514: if ($bodyScope->equals($prevScope)) {
1515: break;
1516: }
1517:
1518: if ($count >= self::GENERALIZE_AFTER_ITERATION) {
1519: $bodyScope = $prevScope->generalizeWith($bodyScope);
1520: }
1521: $count++;
1522: } while ($count < self::LOOP_SCOPE_ITERATIONS);
1523: }
1524:
1525: $bodyScope = $bodyScope->mergeWith($initScope);
1526:
1527: $alwaysIterates = TrinaryLogic::createFromBoolean($context->isTopLevel());
1528: if ($lastCondExpr !== null) {
1529: $alwaysIterates = $alwaysIterates->and($bodyScope->getType($lastCondExpr)->toBoolean()->isTrue());
1530: $bodyScope = $this->processExprNode($stmt, $lastCondExpr, $bodyScope, $nodeCallback, ExpressionContext::createDeep())->getTruthyScope();
1531: }
1532:
1533: $finalScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $bodyScope, $nodeCallback, $context)->filterOutLoopExitPoints();
1534: $finalScope = $finalScopeResult->getScope();
1535: foreach ($finalScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1536: $finalScope = $continueExitPoint->getScope()->mergeWith($finalScope);
1537: }
1538:
1539: $loopScope = $finalScope;
1540: foreach ($stmt->loop as $loopExpr) {
1541: $loopScope = $this->processExprNode($stmt, $loopExpr, $loopScope, $nodeCallback, ExpressionContext::createTopLevel())->getScope();
1542: }
1543: $finalScope = $finalScope->generalizeWith($loopScope);
1544:
1545: if ($lastCondExpr !== null) {
1546: $finalScope = $finalScope->filterByFalseyValue($lastCondExpr);
1547: }
1548:
1549: foreach ($finalScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
1550: $finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
1551: }
1552:
1553: if ($isIterableAtLeastOnce->no() || $finalScopeResult->isAlwaysTerminating()) {
1554: if ($this->polluteScopeWithLoopInitialAssignments) {
1555: $finalScope = $initScope;
1556: } else {
1557: $finalScope = $scope;
1558: }
1559:
1560: } elseif ($isIterableAtLeastOnce->maybe()) {
1561: if ($this->polluteScopeWithLoopInitialAssignments) {
1562: $finalScope = $finalScope->mergeWith($initScope);
1563: } else {
1564: $finalScope = $finalScope->mergeWith($scope);
1565: }
1566: } else {
1567: if (!$this->polluteScopeWithLoopInitialAssignments) {
1568: $finalScope = $finalScope->mergeWith($scope);
1569: }
1570: }
1571:
1572: if ($alwaysIterates->yes()) {
1573: $isAlwaysTerminating = count($finalScopeResult->getExitPointsByType(Break_::class)) === 0;
1574: } elseif ($isIterableAtLeastOnce->yes()) {
1575: $isAlwaysTerminating = $finalScopeResult->isAlwaysTerminating();
1576: } else {
1577: $isAlwaysTerminating = false;
1578: }
1579:
1580: return new StatementResult(
1581: $finalScope,
1582: $finalScopeResult->hasYield() || $hasYield,
1583: $isAlwaysTerminating,
1584: $finalScopeResult->getExitPointsForOuterLoop(),
1585: array_merge($throwPoints, $finalScopeResult->getThrowPoints()),
1586: array_merge($impurePoints, $finalScopeResult->getImpurePoints()),
1587: );
1588: } elseif ($stmt instanceof Switch_) {
1589: $condResult = $this->processExprNode($stmt, $stmt->cond, $scope, $nodeCallback, ExpressionContext::createDeep());
1590: $scope = $condResult->getScope();
1591: $scopeForBranches = $scope;
1592: $finalScope = null;
1593: $prevScope = null;
1594: $hasDefaultCase = false;
1595: $alwaysTerminating = true;
1596: $hasYield = $condResult->hasYield();
1597: $exitPointsForOuterLoop = [];
1598: $throwPoints = $condResult->getThrowPoints();
1599: $impurePoints = $condResult->getImpurePoints();
1600: $fullCondExpr = null;
1601: foreach ($stmt->cases as $caseNode) {
1602: if ($caseNode->cond !== null) {
1603: $condExpr = new BinaryOp\Equal($stmt->cond, $caseNode->cond);
1604: $fullCondExpr = $fullCondExpr === null ? $condExpr : new BooleanOr($fullCondExpr, $condExpr);
1605: $caseResult = $this->processExprNode($stmt, $caseNode->cond, $scopeForBranches, $nodeCallback, ExpressionContext::createDeep());
1606: $scopeForBranches = $caseResult->getScope();
1607: $hasYield = $hasYield || $caseResult->hasYield();
1608: $throwPoints = array_merge($throwPoints, $caseResult->getThrowPoints());
1609: $impurePoints = array_merge($impurePoints, $caseResult->getImpurePoints());
1610: $branchScope = $caseResult->getTruthyScope()->filterByTruthyValue($condExpr);
1611: } else {
1612: $hasDefaultCase = true;
1613: $fullCondExpr = null;
1614: $branchScope = $scopeForBranches;
1615: }
1616:
1617: $branchScope = $branchScope->mergeWith($prevScope);
1618: $branchScopeResult = $this->processStmtNodes($caseNode, $caseNode->stmts, $branchScope, $nodeCallback, $context);
1619: $branchScope = $branchScopeResult->getScope();
1620: $branchFinalScopeResult = $branchScopeResult->filterOutLoopExitPoints();
1621: $hasYield = $hasYield || $branchFinalScopeResult->hasYield();
1622: foreach ($branchScopeResult->getExitPointsByType(Break_::class) as $breakExitPoint) {
1623: $alwaysTerminating = false;
1624: $finalScope = $breakExitPoint->getScope()->mergeWith($finalScope);
1625: }
1626: foreach ($branchScopeResult->getExitPointsByType(Continue_::class) as $continueExitPoint) {
1627: $finalScope = $continueExitPoint->getScope()->mergeWith($finalScope);
1628: }
1629: $exitPointsForOuterLoop = array_merge($exitPointsForOuterLoop, $branchFinalScopeResult->getExitPointsForOuterLoop());
1630: $throwPoints = array_merge($throwPoints, $branchFinalScopeResult->getThrowPoints());
1631: $impurePoints = array_merge($impurePoints, $branchFinalScopeResult->getImpurePoints());
1632: if ($branchScopeResult->isAlwaysTerminating()) {
1633: $alwaysTerminating = $alwaysTerminating && $branchFinalScopeResult->isAlwaysTerminating();
1634: $prevScope = null;
1635: if (isset($fullCondExpr)) {
1636: $scopeForBranches = $scopeForBranches->filterByFalseyValue($fullCondExpr);
1637: $fullCondExpr = null;
1638: }
1639: if (!$branchFinalScopeResult->isAlwaysTerminating()) {
1640: $finalScope = $branchScope->mergeWith($finalScope);
1641: }
1642: } else {
1643: $prevScope = $branchScope;
1644: }
1645: }
1646:
1647: $exhaustive = $scopeForBranches->getType($stmt->cond) instanceof NeverType;
1648:
1649: if (!$hasDefaultCase && !$exhaustive) {
1650: $alwaysTerminating = false;
1651: }
1652:
1653: if ($prevScope !== null && isset($branchFinalScopeResult)) {
1654: $finalScope = $prevScope->mergeWith($finalScope);
1655: $alwaysTerminating = $alwaysTerminating && $branchFinalScopeResult->isAlwaysTerminating();
1656: }
1657:
1658: if ((!$hasDefaultCase && !$exhaustive) || $finalScope === null) {
1659: $finalScope = $scope->mergeWith($finalScope);
1660: }
1661:
1662: return new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPointsForOuterLoop, $throwPoints, $impurePoints);
1663: } elseif ($stmt instanceof TryCatch) {
1664: $branchScopeResult = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context);
1665: $branchScope = $branchScopeResult->getScope();
1666: $finalScope = $branchScopeResult->isAlwaysTerminating() ? null : $branchScope;
1667:
1668: $exitPoints = [];
1669: $finallyExitPoints = [];
1670: $alwaysTerminating = $branchScopeResult->isAlwaysTerminating();
1671: $hasYield = $branchScopeResult->hasYield();
1672:
1673: if ($stmt->finally !== null) {
1674: $finallyScope = $branchScope;
1675: } else {
1676: $finallyScope = null;
1677: }
1678: foreach ($branchScopeResult->getExitPoints() as $exitPoint) {
1679: $finallyExitPoints[] = $exitPoint;
1680: if ($exitPoint->getStatement() instanceof Node\Stmt\Expression && $exitPoint->getStatement()->expr instanceof Expr\Throw_) {
1681: continue;
1682: }
1683: if ($finallyScope !== null) {
1684: $finallyScope = $finallyScope->mergeWith($exitPoint->getScope());
1685: }
1686: $exitPoints[] = $exitPoint;
1687: }
1688:
1689: $throwPoints = $branchScopeResult->getThrowPoints();
1690: $impurePoints = $branchScopeResult->getImpurePoints();
1691: $throwPointsForLater = [];
1692: $pastCatchTypes = new NeverType();
1693:
1694: foreach ($stmt->catches as $catchNode) {
1695: $nodeCallback($catchNode, $scope);
1696:
1697: $originalCatchTypes = array_map(static fn (Name $name): Type => new ObjectType($name->toString()), $catchNode->types);
1698: $catchTypes = array_map(static fn (Type $type): Type => TypeCombinator::remove($type, $pastCatchTypes), $originalCatchTypes);
1699:
1700: $originalCatchType = TypeCombinator::union(...$originalCatchTypes);
1701: $catchType = TypeCombinator::union(...$catchTypes);
1702: $pastCatchTypes = TypeCombinator::union($pastCatchTypes, $originalCatchType);
1703:
1704: $matchingThrowPoints = [];
1705: $matchingCatchTypes = array_fill_keys(array_keys($originalCatchTypes), false);
1706:
1707: // throwable matches all
1708: foreach ($originalCatchTypes as $catchTypeIndex => $catchTypeItem) {
1709: if (!$catchTypeItem->isSuperTypeOf(new ObjectType(Throwable::class))->yes()) {
1710: continue;
1711: }
1712:
1713: foreach ($throwPoints as $throwPointIndex => $throwPoint) {
1714: $matchingThrowPoints[$throwPointIndex] = $throwPoint;
1715: $matchingCatchTypes[$catchTypeIndex] = true;
1716: }
1717: }
1718:
1719: // explicit only
1720: $onlyExplicitIsThrow = true;
1721: if (count($matchingThrowPoints) === 0) {
1722: foreach ($throwPoints as $throwPointIndex => $throwPoint) {
1723: foreach ($catchTypes as $catchTypeIndex => $catchTypeItem) {
1724: if ($catchTypeItem->isSuperTypeOf($throwPoint->getType())->no()) {
1725: continue;
1726: }
1727:
1728: $matchingCatchTypes[$catchTypeIndex] = true;
1729: if (!$throwPoint->isExplicit()) {
1730: continue;
1731: }
1732: $throwNode = $throwPoint->getNode();
1733: if (
1734: !$throwNode instanceof Expr\Throw_
1735: && !($throwNode instanceof Node\Stmt\Expression && $throwNode->expr instanceof Expr\Throw_)
1736: ) {
1737: $onlyExplicitIsThrow = false;
1738: }
1739: $matchingThrowPoints[$throwPointIndex] = $throwPoint;
1740: }
1741: }
1742: }
1743:
1744: // implicit only
1745: if (count($matchingThrowPoints) === 0 || $onlyExplicitIsThrow) {
1746: foreach ($throwPoints as $throwPointIndex => $throwPoint) {
1747: if ($throwPoint->isExplicit()) {
1748: continue;
1749: }
1750:
1751: foreach ($catchTypes as $catchTypeIndex => $catchTypeItem) {
1752: if ($catchTypeItem->isSuperTypeOf($throwPoint->getType())->no()) {
1753: continue;
1754: }
1755:
1756: $matchingThrowPoints[$throwPointIndex] = $throwPoint;
1757: }
1758: }
1759: }
1760:
1761: // include previously removed throw points
1762: if (count($matchingThrowPoints) === 0) {
1763: if ($originalCatchType->isSuperTypeOf(new ObjectType(Throwable::class))->yes()) {
1764: foreach ($branchScopeResult->getThrowPoints() as $originalThrowPoint) {
1765: if (!$originalThrowPoint->canContainAnyThrowable()) {
1766: continue;
1767: }
1768:
1769: $matchingThrowPoints[] = $originalThrowPoint;
1770: $matchingCatchTypes = array_fill_keys(array_keys($originalCatchTypes), true);
1771: }
1772: }
1773: }
1774:
1775: // emit error
1776: foreach ($matchingCatchTypes as $catchTypeIndex => $matched) {
1777: if ($matched) {
1778: continue;
1779: }
1780: $nodeCallback(new CatchWithUnthrownExceptionNode($catchNode, $catchTypes[$catchTypeIndex], $originalCatchTypes[$catchTypeIndex]), $scope);
1781: }
1782:
1783: if (count($matchingThrowPoints) === 0) {
1784: continue;
1785: }
1786:
1787: // recompute throw points
1788: $newThrowPoints = [];
1789: foreach ($throwPoints as $throwPoint) {
1790: $newThrowPoint = $throwPoint->subtractCatchType($originalCatchType);
1791:
1792: if ($newThrowPoint->getType() instanceof NeverType) {
1793: continue;
1794: }
1795:
1796: $newThrowPoints[] = $newThrowPoint;
1797: }
1798: $throwPoints = $newThrowPoints;
1799:
1800: $catchScope = null;
1801: foreach ($matchingThrowPoints as $matchingThrowPoint) {
1802: if ($catchScope === null) {
1803: $catchScope = $matchingThrowPoint->getScope();
1804: } else {
1805: $catchScope = $catchScope->mergeWith($matchingThrowPoint->getScope());
1806: }
1807: }
1808:
1809: $variableName = null;
1810: if ($catchNode->var !== null) {
1811: if (!is_string($catchNode->var->name)) {
1812: throw new ShouldNotHappenException();
1813: }
1814:
1815: $variableName = $catchNode->var->name;
1816: }
1817:
1818: $catchScopeResult = $this->processStmtNodes($catchNode, $catchNode->stmts, $catchScope->enterCatchType($catchType, $variableName), $nodeCallback, $context);
1819: $catchScopeForFinally = $catchScopeResult->getScope();
1820:
1821: $finalScope = $catchScopeResult->isAlwaysTerminating() ? $finalScope : $catchScopeResult->getScope()->mergeWith($finalScope);
1822: $alwaysTerminating = $alwaysTerminating && $catchScopeResult->isAlwaysTerminating();
1823: $hasYield = $hasYield || $catchScopeResult->hasYield();
1824: $catchThrowPoints = $catchScopeResult->getThrowPoints();
1825: $impurePoints = array_merge($impurePoints, $catchScopeResult->getImpurePoints());
1826: $throwPointsForLater = array_merge($throwPointsForLater, $catchThrowPoints);
1827:
1828: if ($finallyScope !== null) {
1829: $finallyScope = $finallyScope->mergeWith($catchScopeForFinally);
1830: }
1831: foreach ($catchScopeResult->getExitPoints() as $exitPoint) {
1832: $finallyExitPoints[] = $exitPoint;
1833: if ($exitPoint->getStatement() instanceof Node\Stmt\Expression && $exitPoint->getStatement()->expr instanceof Expr\Throw_) {
1834: continue;
1835: }
1836: if ($finallyScope !== null) {
1837: $finallyScope = $finallyScope->mergeWith($exitPoint->getScope());
1838: }
1839: $exitPoints[] = $exitPoint;
1840: }
1841:
1842: foreach ($catchThrowPoints as $catchThrowPoint) {
1843: if ($finallyScope === null) {
1844: continue;
1845: }
1846: $finallyScope = $finallyScope->mergeWith($catchThrowPoint->getScope());
1847: }
1848: }
1849:
1850: if ($finalScope === null) {
1851: $finalScope = $scope;
1852: }
1853:
1854: foreach ($throwPoints as $throwPoint) {
1855: if ($finallyScope === null) {
1856: continue;
1857: }
1858: $finallyScope = $finallyScope->mergeWith($throwPoint->getScope());
1859: }
1860:
1861: if ($finallyScope !== null) {
1862: $originalFinallyScope = $finallyScope;
1863: $finallyResult = $this->processStmtNodes($stmt->finally, $stmt->finally->stmts, $finallyScope, $nodeCallback, $context);
1864: $alwaysTerminating = $alwaysTerminating || $finallyResult->isAlwaysTerminating();
1865: $hasYield = $hasYield || $finallyResult->hasYield();
1866: $throwPointsForLater = array_merge($throwPointsForLater, $finallyResult->getThrowPoints());
1867: $impurePoints = array_merge($impurePoints, $finallyResult->getImpurePoints());
1868: $finallyScope = $finallyResult->getScope();
1869: $finalScope = $finallyResult->isAlwaysTerminating() ? $finalScope : $finalScope->processFinallyScope($finallyScope, $originalFinallyScope);
1870: if (count($finallyResult->getExitPoints()) > 0) {
1871: $nodeCallback(new FinallyExitPointsNode(
1872: $finallyResult->getExitPoints(),
1873: $finallyExitPoints,
1874: ), $scope);
1875: }
1876: $exitPoints = array_merge($exitPoints, $finallyResult->getExitPoints());
1877: }
1878:
1879: return new StatementResult($finalScope, $hasYield, $alwaysTerminating, $exitPoints, array_merge($throwPoints, $throwPointsForLater), $impurePoints);
1880: } elseif ($stmt instanceof Unset_) {
1881: $hasYield = false;
1882: $throwPoints = [];
1883: $impurePoints = [];
1884: foreach ($stmt->vars as $var) {
1885: $scope = $this->lookForSetAllowedUndefinedExpressions($scope, $var);
1886: $exprResult = $this->processExprNode($stmt, $var, $scope, $nodeCallback, ExpressionContext::createDeep());
1887: $scope = $exprResult->getScope();
1888: $scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $var);
1889: $hasYield = $hasYield || $exprResult->hasYield();
1890: $throwPoints = array_merge($throwPoints, $exprResult->getThrowPoints());
1891: $impurePoints = array_merge($impurePoints, $exprResult->getImpurePoints());
1892: if ($var instanceof ArrayDimFetch && $var->dim !== null) {
1893: $cloningTraverser = new NodeTraverser();
1894: $cloningTraverser->addVisitor(new CloningVisitor());
1895:
1896: /** @var Expr $clonedVar */
1897: [$clonedVar] = $cloningTraverser->traverse([$var->var]);
1898:
1899: $traverser = new NodeTraverser();
1900: $traverser->addVisitor(new class () extends NodeVisitorAbstract {
1901:
1902: #[Override]
1903: public function leaveNode(Node $node): ?ExistingArrayDimFetch
1904: {
1905: if (!$node instanceof ArrayDimFetch || $node->dim === null) {
1906: return null;
1907: }
1908:
1909: return new ExistingArrayDimFetch($node->var, $node->dim);
1910: }
1911:
1912: });
1913:
1914: /** @var Expr $clonedVar */
1915: [$clonedVar] = $traverser->traverse([$clonedVar]);
1916: $scope = $this->processAssignVar(
1917: $scope,
1918: $stmt,
1919: $clonedVar,
1920: new UnsetOffsetExpr($var->var, $var->dim),
1921: static function (Node $node, Scope $scope) use ($nodeCallback): void {
1922: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
1923: return;
1924: }
1925:
1926: $nodeCallback($node, $scope);
1927: },
1928: ExpressionContext::createDeep(),
1929: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
1930: false,
1931: )->getScope();
1932: } elseif ($var instanceof PropertyFetch) {
1933: $scope = $scope->invalidateExpression($var);
1934: $impurePoints[] = new ImpurePoint(
1935: $scope,
1936: $var,
1937: 'propertyUnset',
1938: 'property unset',
1939: true,
1940: );
1941: } else {
1942: $scope = $scope->invalidateExpression($var);
1943: }
1944:
1945: }
1946: } elseif ($stmt instanceof Node\Stmt\Use_) {
1947: $hasYield = false;
1948: $throwPoints = [];
1949: $impurePoints = [];
1950: foreach ($stmt->uses as $use) {
1951: $nodeCallback($use, $scope);
1952: }
1953: } elseif ($stmt instanceof Node\Stmt\Global_) {
1954: $hasYield = false;
1955: $throwPoints = [];
1956: $impurePoints = [
1957: new ImpurePoint(
1958: $scope,
1959: $stmt,
1960: 'global',
1961: 'global variable',
1962: true,
1963: ),
1964: ];
1965: $vars = [];
1966: foreach ($stmt->vars as $var) {
1967: if (!$var instanceof Variable) {
1968: throw new ShouldNotHappenException();
1969: }
1970: $scope = $this->lookForSetAllowedUndefinedExpressions($scope, $var);
1971: $varResult = $this->processExprNode($stmt, $var, $scope, $nodeCallback, ExpressionContext::createDeep());
1972: $impurePoints = array_merge($impurePoints, $varResult->getImpurePoints());
1973: $scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $var);
1974:
1975: if (!is_string($var->name)) {
1976: continue;
1977: }
1978:
1979: $scope = $scope->assignVariable($var->name, new MixedType(), new MixedType(), TrinaryLogic::createYes());
1980: $vars[] = $var->name;
1981: }
1982: $scope = $this->processVarAnnotation($scope, $vars, $stmt);
1983: } elseif ($stmt instanceof Static_) {
1984: $hasYield = false;
1985: $throwPoints = [];
1986: $impurePoints = [
1987: new ImpurePoint(
1988: $scope,
1989: $stmt,
1990: 'static',
1991: 'static variable',
1992: true,
1993: ),
1994: ];
1995:
1996: $vars = [];
1997: foreach ($stmt->vars as $var) {
1998: if (!is_string($var->var->name)) {
1999: throw new ShouldNotHappenException();
2000: }
2001:
2002: if ($var->default !== null) {
2003: $defaultExprResult = $this->processExprNode($stmt, $var->default, $scope, $nodeCallback, ExpressionContext::createDeep());
2004: $impurePoints = array_merge($impurePoints, $defaultExprResult->getImpurePoints());
2005: }
2006:
2007: $scope = $scope->enterExpressionAssign($var->var);
2008: $varResult = $this->processExprNode($stmt, $var->var, $scope, $nodeCallback, ExpressionContext::createDeep());
2009: $impurePoints = array_merge($impurePoints, $varResult->getImpurePoints());
2010: $scope = $scope->exitExpressionAssign($var->var);
2011:
2012: $scope = $scope->assignVariable($var->var->name, new MixedType(), new MixedType(), TrinaryLogic::createYes());
2013: $vars[] = $var->var->name;
2014: }
2015:
2016: $scope = $this->processVarAnnotation($scope, $vars, $stmt);
2017: } elseif ($stmt instanceof Node\Stmt\Const_) {
2018: $hasYield = false;
2019: $throwPoints = [];
2020: $impurePoints = [];
2021: foreach ($stmt->consts as $const) {
2022: $nodeCallback($const, $scope);
2023: $constResult = $this->processExprNode($stmt, $const->value, $scope, $nodeCallback, ExpressionContext::createDeep());
2024: $impurePoints = array_merge($impurePoints, $constResult->getImpurePoints());
2025: if ($const->namespacedName !== null) {
2026: $constantName = new Name\FullyQualified($const->namespacedName->toString());
2027: } else {
2028: $constantName = new Name\FullyQualified($const->name->toString());
2029: }
2030: $scope = $scope->assignExpression(new ConstFetch($constantName), $scope->getType($const->value), $scope->getNativeType($const->value));
2031: }
2032: } elseif ($stmt instanceof Node\Stmt\ClassConst) {
2033: $hasYield = false;
2034: $throwPoints = [];
2035: $impurePoints = [];
2036: $this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
2037: foreach ($stmt->consts as $const) {
2038: $nodeCallback($const, $scope);
2039: $constResult = $this->processExprNode($stmt, $const->value, $scope, $nodeCallback, ExpressionContext::createDeep());
2040: $impurePoints = array_merge($impurePoints, $constResult->getImpurePoints());
2041: if ($scope->getClassReflection() === null) {
2042: throw new ShouldNotHappenException();
2043: }
2044: $scope = $scope->assignExpression(
2045: new Expr\ClassConstFetch(new Name\FullyQualified($scope->getClassReflection()->getName()), $const->name),
2046: $scope->getType($const->value),
2047: $scope->getNativeType($const->value),
2048: );
2049: }
2050: } elseif ($stmt instanceof Node\Stmt\EnumCase) {
2051: $hasYield = false;
2052: $throwPoints = [];
2053: $this->processAttributeGroups($stmt, $stmt->attrGroups, $scope, $nodeCallback);
2054: $impurePoints = [];
2055: if ($stmt->expr !== null) {
2056: $exprResult = $this->processExprNode($stmt, $stmt->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
2057: $impurePoints = $exprResult->getImpurePoints();
2058: }
2059: } elseif ($stmt instanceof InlineHTML) {
2060: $hasYield = false;
2061: $throwPoints = [];
2062: $impurePoints = [
2063: new ImpurePoint($scope, $stmt, 'betweenPhpTags', 'output between PHP opening and closing tags', true),
2064: ];
2065: } elseif ($stmt instanceof Node\Stmt\Block) {
2066: $result = $this->processStmtNodes($stmt, $stmt->stmts, $scope, $nodeCallback, $context);
2067: if ($this->polluteScopeWithBlock) {
2068: return $result;
2069: }
2070:
2071: return new StatementResult(
2072: $scope->mergeWith($result->getScope()),
2073: $result->hasYield(),
2074: $result->isAlwaysTerminating(),
2075: $result->getExitPoints(),
2076: $result->getThrowPoints(),
2077: $result->getImpurePoints(),
2078: $result->getEndStatements(),
2079: );
2080: } elseif ($stmt instanceof Node\Stmt\Nop) {
2081: $hasYield = false;
2082: $throwPoints = $overridingThrowPoints ?? [];
2083: $impurePoints = [];
2084: } elseif ($stmt instanceof Node\Stmt\GroupUse) {
2085: $hasYield = false;
2086: $throwPoints = [];
2087: foreach ($stmt->uses as $use) {
2088: $nodeCallback($use, $scope);
2089: }
2090: $impurePoints = [];
2091: } else {
2092: $hasYield = false;
2093: $throwPoints = $overridingThrowPoints ?? [];
2094: $impurePoints = [];
2095: }
2096:
2097: return new StatementResult($scope, $hasYield, false, [], $throwPoints, $impurePoints);
2098: }
2099:
2100: /**
2101: * @return array{bool, string|null}
2102: */
2103: private function getDeprecatedAttribute(Scope $scope, Node\Stmt\Function_|Node\Stmt\ClassMethod|Node\PropertyHook $stmt): array
2104: {
2105: $initializerExprContext = InitializerExprContext::fromStubParameter(
2106: $scope->isInClass() ? $scope->getClassReflection()->getName() : null,
2107: $scope->getFile(),
2108: $stmt,
2109: );
2110: $isDeprecated = false;
2111: $deprecatedDescription = null;
2112: $deprecatedDescriptionType = null;
2113: foreach ($stmt->attrGroups as $attrGroup) {
2114: foreach ($attrGroup->attrs as $attr) {
2115: if ($attr->name->toString() !== 'Deprecated') {
2116: continue;
2117: }
2118: $isDeprecated = true;
2119: $arguments = $attr->args;
2120: foreach ($arguments as $i => $arg) {
2121: $argName = $arg->name;
2122: if ($argName === null) {
2123: if ($i !== 0) {
2124: continue;
2125: }
2126:
2127: $deprecatedDescriptionType = $this->initializerExprTypeResolver->getType($arg->value, $initializerExprContext);
2128: break;
2129: }
2130:
2131: if ($argName->toString() !== 'message') {
2132: continue;
2133: }
2134:
2135: $deprecatedDescriptionType = $this->initializerExprTypeResolver->getType($arg->value, $initializerExprContext);
2136: break;
2137: }
2138: }
2139: }
2140:
2141: if ($deprecatedDescriptionType !== null) {
2142: $constantStrings = $deprecatedDescriptionType->getConstantStrings();
2143: if (count($constantStrings) === 1) {
2144: $deprecatedDescription = $constantStrings[0]->getValue();
2145: }
2146: }
2147:
2148: return [$isDeprecated, $deprecatedDescription];
2149: }
2150:
2151: /**
2152: * @return ThrowPoint[]|null
2153: */
2154: private function getOverridingThrowPoints(Node\Stmt $statement, MutatingScope $scope): ?array
2155: {
2156: foreach ($statement->getComments() as $comment) {
2157: if (!$comment instanceof Doc) {
2158: continue;
2159: }
2160:
2161: $function = $scope->getFunction();
2162: $resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
2163: $scope->getFile(),
2164: $scope->isInClass() ? $scope->getClassReflection()->getName() : null,
2165: $scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
2166: $function !== null ? $function->getName() : null,
2167: $comment->getText(),
2168: );
2169:
2170: $throwsTag = $resolvedPhpDoc->getThrowsTag();
2171: if ($throwsTag !== null) {
2172: $throwsType = $throwsTag->getType();
2173: if ($throwsType->isVoid()->yes()) {
2174: return [];
2175: }
2176:
2177: return [ThrowPoint::createExplicit($scope, $throwsType, $statement, false)];
2178: }
2179: }
2180:
2181: return null;
2182: }
2183:
2184: private function getCurrentClassReflection(Node\Stmt\ClassLike $stmt, string $className, Scope $scope): ClassReflection
2185: {
2186: if (!$this->reflectionProvider->hasClass($className)) {
2187: return $this->createAstClassReflection($stmt, $className, $scope);
2188: }
2189:
2190: $defaultClassReflection = $this->reflectionProvider->getClass($className);
2191: if ($defaultClassReflection->getFileName() !== $scope->getFile()) {
2192: return $this->createAstClassReflection($stmt, $className, $scope);
2193: }
2194:
2195: $startLine = $defaultClassReflection->getNativeReflection()->getStartLine();
2196: if ($startLine !== $stmt->getStartLine()) {
2197: return $this->createAstClassReflection($stmt, $className, $scope);
2198: }
2199:
2200: return $defaultClassReflection;
2201: }
2202:
2203: private function createAstClassReflection(Node\Stmt\ClassLike $stmt, string $className, Scope $scope): ClassReflection
2204: {
2205: $nodeToReflection = new NodeToReflection();
2206: $betterReflectionClass = $nodeToReflection->__invoke(
2207: $this->reflector,
2208: $stmt,
2209: new LocatedSource(FileReader::read($scope->getFile()), $className, $scope->getFile()),
2210: $scope->getNamespace() !== null ? new Node\Stmt\Namespace_(new Name($scope->getNamespace())) : null,
2211: );
2212: if (!$betterReflectionClass instanceof \PHPStan\BetterReflection\Reflection\ReflectionClass) {
2213: throw new ShouldNotHappenException();
2214: }
2215:
2216: $enumAdapter = base64_decode('UEhQU3RhblxCZXR0ZXJSZWZsZWN0aW9uXFJlZmxlY3Rpb25cQWRhcHRlclxSZWZsZWN0aW9uRW51bQ==', true);
2217:
2218: return new ClassReflection(
2219: $this->reflectionProvider,
2220: $this->initializerExprTypeResolver,
2221: $this->fileTypeMapper,
2222: $this->stubPhpDocProvider,
2223: $this->phpDocInheritanceResolver,
2224: $this->phpVersion,
2225: $this->signatureMapProvider,
2226: $this->deprecationProvider,
2227: $this->attributeReflectionFactory,
2228: $this->classReflectionExtensionRegistryProvider->getRegistry()->getPropertiesClassReflectionExtensions(),
2229: $this->classReflectionExtensionRegistryProvider->getRegistry()->getMethodsClassReflectionExtensions(),
2230: $this->classReflectionExtensionRegistryProvider->getRegistry()->getAllowedSubTypesClassReflectionExtensions(),
2231: $this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsPropertyClassReflectionExtension(),
2232: $this->classReflectionExtensionRegistryProvider->getRegistry()->getRequireExtendsMethodsClassReflectionExtension(),
2233: $betterReflectionClass->getName(),
2234: $betterReflectionClass instanceof ReflectionEnum && PHP_VERSION_ID >= 80000 ? new $enumAdapter($betterReflectionClass) : new ReflectionClass($betterReflectionClass),
2235: null,
2236: null,
2237: null,
2238: $this->universalObjectCratesClasses,
2239: sprintf('%s:%d', $scope->getFile(), $stmt->getStartLine()),
2240: );
2241: }
2242:
2243: private function lookForSetAllowedUndefinedExpressions(MutatingScope $scope, Expr $expr): MutatingScope
2244: {
2245: return $this->lookForExpressionCallback($scope, $expr, static fn (MutatingScope $scope, Expr $expr): MutatingScope => $scope->setAllowedUndefinedExpression($expr));
2246: }
2247:
2248: private function lookForUnsetAllowedUndefinedExpressions(MutatingScope $scope, Expr $expr): MutatingScope
2249: {
2250: return $this->lookForExpressionCallback($scope, $expr, static fn (MutatingScope $scope, Expr $expr): MutatingScope => $scope->unsetAllowedUndefinedExpression($expr));
2251: }
2252:
2253: /**
2254: * @param Closure(MutatingScope $scope, Expr $expr): MutatingScope $callback
2255: */
2256: private function lookForExpressionCallback(MutatingScope $scope, Expr $expr, Closure $callback): MutatingScope
2257: {
2258: if (!$expr instanceof ArrayDimFetch || $expr->dim !== null) {
2259: $scope = $callback($scope, $expr);
2260: }
2261:
2262: if ($expr instanceof ArrayDimFetch) {
2263: $scope = $this->lookForExpressionCallback($scope, $expr->var, $callback);
2264: } elseif ($expr instanceof PropertyFetch || $expr instanceof Expr\NullsafePropertyFetch) {
2265: $scope = $this->lookForExpressionCallback($scope, $expr->var, $callback);
2266: } elseif ($expr instanceof StaticPropertyFetch && $expr->class instanceof Expr) {
2267: $scope = $this->lookForExpressionCallback($scope, $expr->class, $callback);
2268: } elseif ($expr instanceof List_) {
2269: foreach ($expr->items as $item) {
2270: if ($item === null) {
2271: continue;
2272: }
2273:
2274: $scope = $this->lookForExpressionCallback($scope, $item->value, $callback);
2275: }
2276: }
2277:
2278: return $scope;
2279: }
2280:
2281: private function ensureShallowNonNullability(MutatingScope $scope, Scope $originalScope, Expr $exprToSpecify): EnsuredNonNullabilityResult
2282: {
2283: $exprType = $scope->getType($exprToSpecify);
2284: $isNull = $exprType->isNull();
2285: if ($isNull->yes()) {
2286: return new EnsuredNonNullabilityResult($scope, []);
2287: }
2288:
2289: // keep certainty
2290: $certainty = TrinaryLogic::createYes();
2291: $hasExpressionType = $originalScope->hasExpressionType($exprToSpecify);
2292: if (!$hasExpressionType->no()) {
2293: $certainty = $hasExpressionType;
2294: }
2295:
2296: $exprTypeWithoutNull = TypeCombinator::removeNull($exprType);
2297: if ($exprType->equals($exprTypeWithoutNull)) {
2298: $originalExprType = $originalScope->getType($exprToSpecify);
2299: if (!$originalExprType->equals($exprTypeWithoutNull)) {
2300: $originalNativeType = $originalScope->getNativeType($exprToSpecify);
2301:
2302: return new EnsuredNonNullabilityResult($scope, [
2303: new EnsuredNonNullabilityResultExpression($exprToSpecify, $originalExprType, $originalNativeType, $certainty),
2304: ]);
2305: }
2306: return new EnsuredNonNullabilityResult($scope, []);
2307: }
2308:
2309: $nativeType = $scope->getNativeType($exprToSpecify);
2310: $scope = $scope->specifyExpressionType(
2311: $exprToSpecify,
2312: $exprTypeWithoutNull,
2313: TypeCombinator::removeNull($nativeType),
2314: TrinaryLogic::createYes(),
2315: );
2316:
2317: return new EnsuredNonNullabilityResult(
2318: $scope,
2319: [
2320: new EnsuredNonNullabilityResultExpression($exprToSpecify, $exprType, $nativeType, $certainty),
2321: ],
2322: );
2323: }
2324:
2325: private function ensureNonNullability(MutatingScope $scope, Expr $expr): EnsuredNonNullabilityResult
2326: {
2327: $specifiedExpressions = [];
2328: $originalScope = $scope;
2329: $scope = $this->lookForExpressionCallback($scope, $expr, function ($scope, $expr) use (&$specifiedExpressions, $originalScope) {
2330: $result = $this->ensureShallowNonNullability($scope, $originalScope, $expr);
2331: foreach ($result->getSpecifiedExpressions() as $specifiedExpression) {
2332: $specifiedExpressions[] = $specifiedExpression;
2333: }
2334: return $result->getScope();
2335: });
2336:
2337: return new EnsuredNonNullabilityResult($scope, $specifiedExpressions);
2338: }
2339:
2340: /**
2341: * @param EnsuredNonNullabilityResultExpression[] $specifiedExpressions
2342: */
2343: private function revertNonNullability(MutatingScope $scope, array $specifiedExpressions): MutatingScope
2344: {
2345: foreach ($specifiedExpressions as $specifiedExpressionResult) {
2346: $scope = $scope->specifyExpressionType(
2347: $specifiedExpressionResult->getExpression(),
2348: $specifiedExpressionResult->getOriginalType(),
2349: $specifiedExpressionResult->getOriginalNativeType(),
2350: $specifiedExpressionResult->getCertainty(),
2351: );
2352: }
2353:
2354: return $scope;
2355: }
2356:
2357: private function findEarlyTerminatingExpr(Expr $expr, Scope $scope): ?Expr
2358: {
2359: if (($expr instanceof MethodCall || $expr instanceof Expr\StaticCall) && $expr->name instanceof Node\Identifier) {
2360: if (array_key_exists($expr->name->toLowerString(), $this->earlyTerminatingMethodNames)) {
2361: if ($expr instanceof MethodCall) {
2362: $methodCalledOnType = $scope->getType($expr->var);
2363: } else {
2364: if ($expr->class instanceof Name) {
2365: $methodCalledOnType = $scope->resolveTypeByName($expr->class);
2366: } else {
2367: $methodCalledOnType = $scope->getType($expr->class);
2368: }
2369: }
2370:
2371: foreach ($methodCalledOnType->getObjectClassNames() as $referencedClass) {
2372: if (!$this->reflectionProvider->hasClass($referencedClass)) {
2373: continue;
2374: }
2375:
2376: $classReflection = $this->reflectionProvider->getClass($referencedClass);
2377: foreach (array_merge([$referencedClass], $classReflection->getParentClassesNames(), $classReflection->getNativeReflection()->getInterfaceNames()) as $className) {
2378: if (!isset($this->earlyTerminatingMethodCalls[$className])) {
2379: continue;
2380: }
2381:
2382: if (in_array((string) $expr->name, $this->earlyTerminatingMethodCalls[$className], true)) {
2383: return $expr;
2384: }
2385: }
2386: }
2387: }
2388: }
2389:
2390: if ($expr instanceof FuncCall && $expr->name instanceof Name) {
2391: if (in_array((string) $expr->name, $this->earlyTerminatingFunctionCalls, true)) {
2392: return $expr;
2393: }
2394: }
2395:
2396: if ($expr instanceof Expr\Exit_ || $expr instanceof Expr\Throw_) {
2397: return $expr;
2398: }
2399:
2400: $exprType = $scope->getType($expr);
2401: if ($exprType instanceof NeverType && $exprType->isExplicit()) {
2402: return $expr;
2403: }
2404:
2405: return null;
2406: }
2407:
2408: /**
2409: * @param callable(Node $node, Scope $scope): void $nodeCallback
2410: */
2411: public function processExprNode(Node\Stmt $stmt, Expr $expr, MutatingScope $scope, callable $nodeCallback, ExpressionContext $context): ExpressionResult
2412: {
2413: if ($expr instanceof Expr\CallLike && $expr->isFirstClassCallable()) {
2414: if ($expr instanceof FuncCall) {
2415: $newExpr = new FunctionCallableNode($expr->name, $expr);
2416: } elseif ($expr instanceof MethodCall) {
2417: $newExpr = new MethodCallableNode($expr->var, $expr->name, $expr);
2418: } elseif ($expr instanceof StaticCall) {
2419: $newExpr = new StaticMethodCallableNode($expr->class, $expr->name, $expr);
2420: } elseif ($expr instanceof New_ && !$expr->class instanceof Class_) {
2421: $newExpr = new InstantiationCallableNode($expr->class, $expr);
2422: } else {
2423: throw new ShouldNotHappenException();
2424: }
2425:
2426: return $this->processExprNode($stmt, $newExpr, $scope, $nodeCallback, $context);
2427: }
2428:
2429: $this->callNodeCallbackWithExpression($nodeCallback, $expr, $scope, $context);
2430:
2431: if ($expr instanceof Variable) {
2432: $hasYield = false;
2433: $throwPoints = [];
2434: $impurePoints = [];
2435: $isAlwaysTerminating = false;
2436: if ($expr->name instanceof Expr) {
2437: return $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
2438: } elseif (in_array($expr->name, Scope::SUPERGLOBAL_VARIABLES, true)) {
2439: $impurePoints[] = new ImpurePoint($scope, $expr, 'superglobal', 'access to superglobal variable', true);
2440: }
2441: } elseif ($expr instanceof Assign || $expr instanceof AssignRef) {
2442: $result = $this->processAssignVar(
2443: $scope,
2444: $stmt,
2445: $expr->var,
2446: $expr->expr,
2447: $nodeCallback,
2448: $context,
2449: function (MutatingScope $scope) use ($stmt, $expr, $nodeCallback, $context): ExpressionResult {
2450: $impurePoints = [];
2451: if ($expr instanceof AssignRef) {
2452: $referencedExpr = $expr->expr;
2453: while ($referencedExpr instanceof ArrayDimFetch) {
2454: $referencedExpr = $referencedExpr->var;
2455: }
2456:
2457: if ($referencedExpr instanceof PropertyFetch || $referencedExpr instanceof StaticPropertyFetch) {
2458: $impurePoints[] = new ImpurePoint(
2459: $scope,
2460: $expr,
2461: 'propertyAssignByRef',
2462: 'property assignment by reference',
2463: false,
2464: );
2465: }
2466:
2467: $scope = $scope->enterExpressionAssign($expr->expr);
2468: }
2469:
2470: if ($expr->var instanceof Variable && is_string($expr->var->name)) {
2471: $context = $context->enterRightSideAssign(
2472: $expr->var->name,
2473: $scope->getType($expr->expr),
2474: $scope->getNativeType($expr->expr),
2475: );
2476: }
2477:
2478: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
2479: $hasYield = $result->hasYield();
2480: $throwPoints = $result->getThrowPoints();
2481: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
2482: $isAlwaysTerminating = $result->isAlwaysTerminating();
2483: $scope = $result->getScope();
2484:
2485: if ($expr instanceof AssignRef) {
2486: $scope = $scope->exitExpressionAssign($expr->expr);
2487: }
2488:
2489: return new ExpressionResult($scope, $hasYield, $isAlwaysTerminating, $throwPoints, $impurePoints);
2490: },
2491: true,
2492: );
2493: $scope = $result->getScope();
2494: $hasYield = $result->hasYield();
2495: $throwPoints = $result->getThrowPoints();
2496: $impurePoints = $result->getImpurePoints();
2497: $isAlwaysTerminating = $result->isAlwaysTerminating();
2498: $vars = $this->getAssignedVariables($expr->var);
2499: if (count($vars) > 0) {
2500: $varChangedScope = false;
2501: $scope = $this->processVarAnnotation($scope, $vars, $stmt, $varChangedScope);
2502: if (!$varChangedScope) {
2503: $scope = $this->processStmtVarAnnotation($scope, $stmt, null, $nodeCallback);
2504: }
2505: }
2506: } elseif ($expr instanceof Expr\AssignOp) {
2507: $result = $this->processAssignVar(
2508: $scope,
2509: $stmt,
2510: $expr->var,
2511: $expr,
2512: $nodeCallback,
2513: $context,
2514: function (MutatingScope $scope) use ($stmt, $expr, $nodeCallback, $context): ExpressionResult {
2515: $originalScope = $scope;
2516: if ($expr instanceof Expr\AssignOp\Coalesce) {
2517: $scope = $scope->filterByFalseyValue(
2518: new BinaryOp\NotIdentical($expr->var, new ConstFetch(new Name('null'))),
2519: );
2520: }
2521:
2522: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
2523: if ($expr instanceof Expr\AssignOp\Coalesce) {
2524: return new ExpressionResult(
2525: $result->getScope()->mergeWith($originalScope),
2526: $result->hasYield(),
2527: $result->isAlwaysTerminating(),
2528: $result->getThrowPoints(),
2529: $result->getImpurePoints(),
2530: );
2531: }
2532:
2533: return $result;
2534: },
2535: $expr instanceof Expr\AssignOp\Coalesce,
2536: );
2537: $scope = $result->getScope();
2538: $hasYield = $result->hasYield();
2539: $throwPoints = $result->getThrowPoints();
2540: $impurePoints = $result->getImpurePoints();
2541: $isAlwaysTerminating = $result->isAlwaysTerminating();
2542: if (
2543: ($expr instanceof Expr\AssignOp\Div || $expr instanceof Expr\AssignOp\Mod) &&
2544: !$scope->getType($expr->expr)->toNumber()->isSuperTypeOf(new ConstantIntegerType(0))->no()
2545: ) {
2546: $throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(DivisionByZeroError::class), $expr, false);
2547: }
2548: } elseif ($expr instanceof FuncCall) {
2549: $parametersAcceptor = null;
2550: $functionReflection = null;
2551: $throwPoints = [];
2552: $impurePoints = [];
2553: $isAlwaysTerminating = false;
2554: if ($expr->name instanceof Expr) {
2555: $nameType = $scope->getType($expr->name);
2556: if (!$nameType->isCallable()->no()) {
2557: $parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
2558: $scope,
2559: $expr->getArgs(),
2560: $nameType->getCallableParametersAcceptors($scope),
2561: null,
2562: );
2563: }
2564:
2565: $nameResult = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
2566: $scope = $nameResult->getScope();
2567: $throwPoints = $nameResult->getThrowPoints();
2568: $impurePoints = $nameResult->getImpurePoints();
2569: $isAlwaysTerminating = $nameResult->isAlwaysTerminating();
2570: if (
2571: $nameType->isObject()->yes()
2572: && $nameType->isCallable()->yes()
2573: && (new ObjectType(Closure::class))->isSuperTypeOf($nameType)->no()
2574: ) {
2575: $invokeResult = $this->processExprNode(
2576: $stmt,
2577: new MethodCall($expr->name, '__invoke', $expr->getArgs(), $expr->getAttributes()),
2578: $scope,
2579: static function (): void {
2580: },
2581: $context->enterDeep(),
2582: );
2583: $throwPoints = array_merge($throwPoints, $invokeResult->getThrowPoints());
2584: $impurePoints = array_merge($impurePoints, $invokeResult->getImpurePoints());
2585: $isAlwaysTerminating = $invokeResult->isAlwaysTerminating();
2586: } elseif ($parametersAcceptor instanceof CallableParametersAcceptor) {
2587: $callableThrowPoints = array_map(static fn (SimpleThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $expr, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $expr), $parametersAcceptor->getThrowPoints());
2588: if (!$this->implicitThrows) {
2589: $callableThrowPoints = array_values(array_filter($callableThrowPoints, static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit()));
2590: }
2591: $throwPoints = array_merge($throwPoints, $callableThrowPoints);
2592: $impurePoints = array_merge($impurePoints, array_map(static fn (SimpleImpurePoint $impurePoint) => new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain()), $parametersAcceptor->getImpurePoints()));
2593:
2594: $scope = $this->processImmediatelyCalledCallable($scope, $parametersAcceptor->getInvalidateExpressions(), $parametersAcceptor->getUsedVariables());
2595: }
2596: } elseif ($this->reflectionProvider->hasFunction($expr->name, $scope)) {
2597: $functionReflection = $this->reflectionProvider->getFunction($expr->name, $scope);
2598: $parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
2599: $scope,
2600: $expr->getArgs(),
2601: $functionReflection->getVariants(),
2602: $functionReflection->getNamedArgumentsVariants(),
2603: );
2604: $impurePoint = SimpleImpurePoint::createFromVariant($functionReflection, $parametersAcceptor);
2605: if ($impurePoint !== null) {
2606: $impurePoints[] = new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain());
2607: }
2608: } else {
2609: $impurePoints[] = new ImpurePoint(
2610: $scope,
2611: $expr,
2612: 'functionCall',
2613: 'call to unknown function',
2614: false,
2615: );
2616: }
2617:
2618: if ($parametersAcceptor !== null) {
2619: $expr = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $expr) ?? $expr;
2620: $returnType = $parametersAcceptor->getReturnType();
2621: $isAlwaysTerminating = $isAlwaysTerminating || $returnType instanceof NeverType && $returnType->isExplicit();
2622: }
2623: $result = $this->processArgs($stmt, $functionReflection, null, $parametersAcceptor, $expr, $scope, $nodeCallback, $context);
2624: $scope = $result->getScope();
2625: $hasYield = $result->hasYield();
2626: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
2627: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
2628: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
2629:
2630: if ($functionReflection !== null) {
2631: $functionThrowPoint = $this->getFunctionThrowPoint($functionReflection, $parametersAcceptor, $expr, $scope);
2632: if ($functionThrowPoint !== null) {
2633: $throwPoints[] = $functionThrowPoint;
2634: }
2635: } else {
2636: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
2637: }
2638:
2639: if (
2640: $parametersAcceptor instanceof ClosureType && count($parametersAcceptor->getImpurePoints()) > 0
2641: && $scope->isInClass()
2642: ) {
2643: $scope = $scope->invalidateExpression(new Variable('this'), true);
2644: }
2645:
2646: if (
2647: $functionReflection !== null
2648: && in_array($functionReflection->getName(), ['json_encode', 'json_decode'], true)
2649: ) {
2650: $scope = $scope->invalidateExpression(new FuncCall(new Name('json_last_error'), []))
2651: ->invalidateExpression(new FuncCall(new Name\FullyQualified('json_last_error'), []))
2652: ->invalidateExpression(new FuncCall(new Name('json_last_error_msg'), []))
2653: ->invalidateExpression(new FuncCall(new Name\FullyQualified('json_last_error_msg'), []));
2654: }
2655:
2656: if (
2657: $functionReflection !== null
2658: && $functionReflection->getName() === 'file_put_contents'
2659: && count($expr->getArgs()) > 0
2660: ) {
2661: $scope = $scope->invalidateExpression(new FuncCall(new Name('file_get_contents'), [$expr->getArgs()[0]]))
2662: ->invalidateExpression(new FuncCall(new Name\FullyQualified('file_get_contents'), [$expr->getArgs()[0]]));
2663: }
2664:
2665: if (
2666: $functionReflection !== null
2667: && in_array($functionReflection->getName(), ['array_pop', 'array_shift'], true)
2668: && count($expr->getArgs()) >= 1
2669: ) {
2670: $arrayArg = $expr->getArgs()[0]->value;
2671:
2672: $arrayArgType = $scope->getType($arrayArg);
2673: $arrayArgNativeType = $scope->getNativeType($arrayArg);
2674: $isArrayPop = $functionReflection->getName() === 'array_pop';
2675:
2676: $scope = $this->processAssignVar(
2677: $scope,
2678: $stmt,
2679: $arrayArg,
2680: new NativeTypeExpr(
2681: $isArrayPop ? $arrayArgType->popArray() : $arrayArgType->shiftArray(),
2682: $isArrayPop ? $arrayArgNativeType->popArray() : $arrayArgNativeType->shiftArray(),
2683: ),
2684: static function (Node $node, Scope $scope) use ($nodeCallback): void {
2685: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
2686: return;
2687: }
2688:
2689: $nodeCallback($node, $scope);
2690: },
2691: $context,
2692: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
2693: true,
2694: )->getScope();
2695: }
2696:
2697: if (
2698: $functionReflection !== null
2699: && in_array($functionReflection->getName(), ['array_push', 'array_unshift'], true)
2700: && count($expr->getArgs()) >= 2
2701: ) {
2702: $arrayArg = $expr->getArgs()[0]->value;
2703:
2704: $scope = $this->processAssignVar(
2705: $scope,
2706: $stmt,
2707: $arrayArg,
2708: new NativeTypeExpr(
2709: $this->getArrayFunctionAppendingType($functionReflection, $scope, $expr),
2710: $this->getArrayFunctionAppendingType($functionReflection, $scope->doNotTreatPhpDocTypesAsCertain(), $expr),
2711: ),
2712: static function (Node $node, Scope $scope) use ($nodeCallback): void {
2713: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
2714: return;
2715: }
2716:
2717: $nodeCallback($node, $scope);
2718: },
2719: $context,
2720: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
2721: true,
2722: )->getScope();
2723: }
2724:
2725: if (
2726: $functionReflection !== null
2727: && in_array($functionReflection->getName(), ['fopen', 'file_get_contents'], true)
2728: ) {
2729: $scope = $scope->assignVariable('http_response_header', TypeCombinator::intersect(new ArrayType(new IntegerType(), new StringType()), new AccessoryArrayListType()), new ArrayType(new IntegerType(), new StringType()), TrinaryLogic::createYes());
2730: }
2731:
2732: if (
2733: $functionReflection !== null
2734: && $functionReflection->getName() === 'shuffle'
2735: ) {
2736: $arrayArg = $expr->getArgs()[0]->value;
2737:
2738: $scope = $this->processAssignVar(
2739: $scope,
2740: $stmt,
2741: $arrayArg,
2742: new NativeTypeExpr($scope->getType($arrayArg)->shuffleArray(), $scope->getNativeType($arrayArg)->shuffleArray()),
2743: static function (Node $node, Scope $scope) use ($nodeCallback): void {
2744: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
2745: return;
2746: }
2747:
2748: $nodeCallback($node, $scope);
2749: },
2750: $context,
2751: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
2752: true,
2753: )->getScope();
2754: }
2755:
2756: if (
2757: $functionReflection !== null
2758: && $functionReflection->getName() === 'array_splice'
2759: && count($expr->getArgs()) >= 2
2760: ) {
2761: $arrayArg = $expr->getArgs()[0]->value;
2762: $arrayArgType = $scope->getType($arrayArg);
2763: $arrayArgNativeType = $scope->getNativeType($arrayArg);
2764:
2765: $offsetType = $scope->getType($expr->getArgs()[1]->value);
2766: $lengthType = isset($expr->getArgs()[2]) ? $scope->getType($expr->getArgs()[2]->value) : new NullType();
2767: $replacementType = isset($expr->getArgs()[3]) ? $scope->getType($expr->getArgs()[3]->value) : new ConstantArrayType([], []);
2768:
2769: $scope = $this->processAssignVar(
2770: $scope,
2771: $stmt,
2772: $arrayArg,
2773: new NativeTypeExpr(
2774: $arrayArgType->spliceArray($offsetType, $lengthType, $replacementType),
2775: $arrayArgNativeType->spliceArray($offsetType, $lengthType, $replacementType),
2776: ),
2777: static function (Node $node, Scope $scope) use ($nodeCallback): void {
2778: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
2779: return;
2780: }
2781:
2782: $nodeCallback($node, $scope);
2783: },
2784: $context,
2785: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
2786: true,
2787: )->getScope();
2788: }
2789:
2790: if (
2791: $functionReflection !== null
2792: && in_array($functionReflection->getName(), ['sort', 'rsort', 'usort'], true)
2793: && count($expr->getArgs()) >= 1
2794: ) {
2795: $arrayArg = $expr->getArgs()[0]->value;
2796:
2797: $scope = $this->processAssignVar(
2798: $scope,
2799: $stmt,
2800: $arrayArg,
2801: new NativeTypeExpr($this->getArraySortPreserveListFunctionType($scope->getType($arrayArg)), $this->getArraySortPreserveListFunctionType($scope->getNativeType($arrayArg))),
2802: static function (Node $node, Scope $scope) use ($nodeCallback): void {
2803: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
2804: return;
2805: }
2806:
2807: $nodeCallback($node, $scope);
2808: },
2809: $context,
2810: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
2811: true,
2812: )->getScope();
2813: }
2814:
2815: if (
2816: $functionReflection !== null
2817: && in_array($functionReflection->getName(), ['natcasesort', 'natsort', 'arsort', 'asort', 'ksort', 'krsort', 'uasort', 'uksort'], true)
2818: && count($expr->getArgs()) >= 1
2819: ) {
2820: $arrayArg = $expr->getArgs()[0]->value;
2821:
2822: $scope = $this->processAssignVar(
2823: $scope,
2824: $stmt,
2825: $arrayArg,
2826: new NativeTypeExpr($this->getArraySortDoNotPreserveListFunctionType($scope->getType($arrayArg)), $this->getArraySortDoNotPreserveListFunctionType($scope->getNativeType($arrayArg))),
2827: static function (Node $node, Scope $scope) use ($nodeCallback): void {
2828: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
2829: return;
2830: }
2831:
2832: $nodeCallback($node, $scope);
2833: },
2834: $context,
2835: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
2836: true,
2837: )->getScope();
2838: }
2839:
2840: if (
2841: $functionReflection !== null
2842: && $functionReflection->getName() === 'extract'
2843: ) {
2844: $extractedArg = $expr->getArgs()[0]->value;
2845: $extractedType = $scope->getType($extractedArg);
2846: $constantArrays = $extractedType->getConstantArrays();
2847: if (count($constantArrays) > 0) {
2848: $properties = [];
2849: $optionalProperties = [];
2850: $refCount = [];
2851: foreach ($constantArrays as $constantArray) {
2852: foreach ($constantArray->getKeyTypes() as $i => $keyType) {
2853: if ($keyType->isString()->no()) {
2854: // integers as variable names not allowed
2855: continue;
2856: }
2857: $key = (string) $keyType->getValue();
2858: $valueType = $constantArray->getValueTypes()[$i];
2859: $optional = $constantArray->isOptionalKey($i);
2860: if ($optional) {
2861: $optionalProperties[] = $key;
2862: }
2863: if (isset($properties[$key])) {
2864: $properties[$key] = TypeCombinator::union($properties[$key], $valueType);
2865: $refCount[$key]++;
2866: } else {
2867: $properties[$key] = $valueType;
2868: $refCount[$key] = 1;
2869: }
2870: }
2871: }
2872: foreach ($properties as $name => $type) {
2873: $optional = in_array($name, $optionalProperties, true) || $refCount[$name] < count($constantArrays);
2874: $scope = $scope->assignVariable($name, $type, $type, $optional ? TrinaryLogic::createMaybe() : TrinaryLogic::createYes());
2875: }
2876: } else {
2877: $scope = $scope->afterExtractCall();
2878: }
2879: }
2880:
2881: if (
2882: $functionReflection !== null
2883: && in_array($functionReflection->getName(), ['clearstatcache', 'unlink'], true)
2884: ) {
2885: $scope = $scope->afterClearstatcacheCall();
2886: }
2887:
2888: if (
2889: $functionReflection !== null
2890: && str_starts_with($functionReflection->getName(), 'openssl')
2891: ) {
2892: $scope = $scope->afterOpenSslCall($functionReflection->getName());
2893: }
2894:
2895: } elseif ($expr instanceof MethodCall) {
2896: $originalScope = $scope;
2897: if (
2898: ($expr->var instanceof Expr\Closure || $expr->var instanceof Expr\ArrowFunction)
2899: && $expr->name instanceof Node\Identifier
2900: && strtolower($expr->name->name) === 'call'
2901: && isset($expr->getArgs()[0])
2902: ) {
2903: $closureCallScope = $scope->enterClosureCall(
2904: $scope->getType($expr->getArgs()[0]->value),
2905: $scope->getNativeType($expr->getArgs()[0]->value),
2906: );
2907: }
2908:
2909: $result = $this->processExprNode($stmt, $expr->var, $closureCallScope ?? $scope, $nodeCallback, $context->enterDeep());
2910: $hasYield = $result->hasYield();
2911: $throwPoints = $result->getThrowPoints();
2912: $impurePoints = $result->getImpurePoints();
2913: $isAlwaysTerminating = $result->isAlwaysTerminating();
2914: $scope = $result->getScope();
2915: if (isset($closureCallScope)) {
2916: $scope = $scope->restoreOriginalScopeAfterClosureBind($originalScope);
2917: }
2918: $parametersAcceptor = null;
2919: $methodReflection = null;
2920: $calledOnType = $scope->getType($expr->var);
2921: if ($expr->name instanceof Expr) {
2922: $methodNameResult = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
2923: $throwPoints = array_merge($throwPoints, $methodNameResult->getThrowPoints());
2924: $scope = $methodNameResult->getScope();
2925: } else {
2926: $methodName = $expr->name->name;
2927: $methodReflection = $scope->getMethodReflection($calledOnType, $methodName);
2928: if ($methodReflection !== null) {
2929: $parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
2930: $scope,
2931: $expr->getArgs(),
2932: $methodReflection->getVariants(),
2933: $methodReflection->getNamedArgumentsVariants(),
2934: );
2935:
2936: $methodThrowPoint = $this->getMethodThrowPoint($methodReflection, $parametersAcceptor, $expr, $scope);
2937: if ($methodThrowPoint !== null) {
2938: $throwPoints[] = $methodThrowPoint;
2939: }
2940: }
2941: }
2942:
2943: if ($methodReflection !== null) {
2944: $impurePoint = SimpleImpurePoint::createFromVariant($methodReflection, $parametersAcceptor);
2945: if ($impurePoint !== null) {
2946: $impurePoints[] = new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain());
2947: }
2948: } else {
2949: $impurePoints[] = new ImpurePoint(
2950: $scope,
2951: $expr,
2952: 'methodCall',
2953: 'call to unknown method',
2954: false,
2955: );
2956: }
2957:
2958: if ($parametersAcceptor !== null) {
2959: $expr = ArgumentsNormalizer::reorderMethodArguments($parametersAcceptor, $expr) ?? $expr;
2960: $returnType = $parametersAcceptor->getReturnType();
2961: $isAlwaysTerminating = $returnType instanceof NeverType && $returnType->isExplicit();
2962: }
2963:
2964: $result = $this->processArgs(
2965: $stmt,
2966: $methodReflection,
2967: $methodReflection !== null ? $scope->getNakedMethod($calledOnType, $methodReflection->getName()) : null,
2968: $parametersAcceptor,
2969: $expr,
2970: $scope,
2971: $nodeCallback,
2972: $context,
2973: );
2974: $scope = $result->getScope();
2975:
2976: if ($methodReflection !== null) {
2977: $hasSideEffects = $methodReflection->hasSideEffects();
2978: if ($hasSideEffects->yes() || $methodReflection->getName() === '__construct') {
2979: $nodeCallback(new InvalidateExprNode($expr->var), $scope);
2980: $scope = $scope->invalidateExpression($expr->var, true);
2981: }
2982: if ($parametersAcceptor !== null && !$methodReflection->isStatic()) {
2983: $selfOutType = $methodReflection->getSelfOutType();
2984: if ($selfOutType !== null) {
2985: $scope = $scope->assignExpression(
2986: $expr->var,
2987: TemplateTypeHelper::resolveTemplateTypes(
2988: $selfOutType,
2989: $parametersAcceptor->getResolvedTemplateTypeMap(),
2990: $parametersAcceptor instanceof ExtendedParametersAcceptor ? $parametersAcceptor->getCallSiteVarianceMap() : TemplateTypeVarianceMap::createEmpty(),
2991: TemplateTypeVariance::createCovariant(),
2992: ),
2993: $scope->getNativeType($expr->var),
2994: );
2995: }
2996: }
2997:
2998: if (
2999: $scope->isInClass()
3000: && $scope->getClassReflection()->getName() === $methodReflection->getDeclaringClass()->getName()
3001: /*&& (
3002: // should not be allowed but in practice has to be
3003: $scope->getClassReflection()->isFinal()
3004: || $methodReflection->isFinal()->yes()
3005: || $methodReflection->isPrivate()
3006: )*/
3007: && TypeUtils::findThisType($calledOnType) !== null
3008: ) {
3009: $calledMethodScope = $this->processCalledMethod($methodReflection);
3010: if ($calledMethodScope !== null) {
3011: $scope = $scope->mergeInitializedProperties($calledMethodScope);
3012: }
3013: }
3014: } else {
3015: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
3016: }
3017: $hasYield = $hasYield || $result->hasYield();
3018: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3019: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3020: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3021: } elseif ($expr instanceof Expr\NullsafeMethodCall) {
3022: $nonNullabilityResult = $this->ensureShallowNonNullability($scope, $scope, $expr->var);
3023: $exprResult = $this->processExprNode($stmt, new MethodCall($expr->var, $expr->name, $expr->args, array_merge($expr->getAttributes(), ['virtualNullsafeMethodCall' => true])), $nonNullabilityResult->getScope(), $nodeCallback, $context);
3024: $scope = $this->revertNonNullability($exprResult->getScope(), $nonNullabilityResult->getSpecifiedExpressions());
3025:
3026: return new ExpressionResult(
3027: $scope,
3028: $exprResult->hasYield(),
3029: false,
3030: $exprResult->getThrowPoints(),
3031: $exprResult->getImpurePoints(),
3032: static fn (): MutatingScope => $scope->filterByTruthyValue($expr),
3033: static fn (): MutatingScope => $scope->filterByFalseyValue($expr),
3034: );
3035: } elseif ($expr instanceof StaticCall) {
3036: $hasYield = false;
3037: $throwPoints = [];
3038: $impurePoints = [];
3039: $isAlwaysTerminating = false;
3040: if ($expr->class instanceof Expr) {
3041: $objectClasses = $scope->getType($expr->class)->getObjectClassNames();
3042: if (count($objectClasses) !== 1) {
3043: $objectClasses = $scope->getType(new New_($expr->class))->getObjectClassNames();
3044: }
3045: if (count($objectClasses) === 1) {
3046: $objectExprResult = $this->processExprNode($stmt, new StaticCall(new Name($objectClasses[0]), $expr->name, []), $scope, static function (): void {
3047: }, $context->enterDeep());
3048: $additionalThrowPoints = $objectExprResult->getThrowPoints();
3049: } else {
3050: $additionalThrowPoints = [ThrowPoint::createImplicit($scope, $expr)];
3051: }
3052: $classResult = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
3053: $hasYield = $classResult->hasYield();
3054: $throwPoints = array_merge($throwPoints, $classResult->getThrowPoints());
3055: $impurePoints = array_merge($impurePoints, $classResult->getImpurePoints());
3056: $isAlwaysTerminating = $classResult->isAlwaysTerminating();
3057: foreach ($additionalThrowPoints as $throwPoint) {
3058: $throwPoints[] = $throwPoint;
3059: }
3060: $scope = $classResult->getScope();
3061: }
3062:
3063: $parametersAcceptor = null;
3064: $methodReflection = null;
3065: if ($expr->name instanceof Expr) {
3066: $result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
3067: $hasYield = $hasYield || $result->hasYield();
3068: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3069: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3070: $scope = $result->getScope();
3071: } elseif ($expr->class instanceof Name) {
3072: $classType = $scope->resolveTypeByName($expr->class);
3073: $methodName = $expr->name->name;
3074: if ($classType->hasMethod($methodName)->yes()) {
3075: $methodReflection = $classType->getMethod($methodName, $scope);
3076: $parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
3077: $scope,
3078: $expr->getArgs(),
3079: $methodReflection->getVariants(),
3080: $methodReflection->getNamedArgumentsVariants(),
3081: );
3082:
3083: $methodThrowPoint = $this->getStaticMethodThrowPoint($methodReflection, $parametersAcceptor, $expr, $scope);
3084: if ($methodThrowPoint !== null) {
3085: $throwPoints[] = $methodThrowPoint;
3086: }
3087:
3088: $declaringClass = $methodReflection->getDeclaringClass();
3089: if (
3090: $declaringClass->getName() === 'Closure'
3091: && strtolower($methodName) === 'bind'
3092: ) {
3093: $thisType = null;
3094: $nativeThisType = null;
3095: if (isset($expr->getArgs()[1])) {
3096: $argType = $scope->getType($expr->getArgs()[1]->value);
3097: if ($argType->isNull()->yes()) {
3098: $thisType = null;
3099: } else {
3100: $thisType = $argType;
3101: }
3102:
3103: $nativeArgType = $scope->getNativeType($expr->getArgs()[1]->value);
3104: if ($nativeArgType->isNull()->yes()) {
3105: $nativeThisType = null;
3106: } else {
3107: $nativeThisType = $nativeArgType;
3108: }
3109: }
3110: $scopeClasses = ['static'];
3111: if (isset($expr->getArgs()[2])) {
3112: $argValue = $expr->getArgs()[2]->value;
3113: $argValueType = $scope->getType($argValue);
3114:
3115: $directClassNames = $argValueType->getObjectClassNames();
3116: if (count($directClassNames) > 0) {
3117: $scopeClasses = $directClassNames;
3118: $thisTypes = [];
3119: foreach ($directClassNames as $directClassName) {
3120: $thisTypes[] = new ObjectType($directClassName);
3121: }
3122: $thisType = TypeCombinator::union(...$thisTypes);
3123: } else {
3124: $thisType = $argValueType->getClassStringObjectType();
3125: $scopeClasses = $thisType->getObjectClassNames();
3126: }
3127: }
3128: $closureBindScope = $scope->enterClosureBind($thisType, $nativeThisType, $scopeClasses);
3129: }
3130: } else {
3131: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
3132: }
3133: }
3134:
3135: if ($methodReflection !== null) {
3136: $impurePoint = SimpleImpurePoint::createFromVariant($methodReflection, $parametersAcceptor);
3137: if ($impurePoint !== null) {
3138: $impurePoints[] = new ImpurePoint($scope, $expr, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain());
3139: }
3140: } else {
3141: $impurePoints[] = new ImpurePoint(
3142: $scope,
3143: $expr,
3144: 'methodCall',
3145: 'call to unknown method',
3146: false,
3147: );
3148: }
3149:
3150: if ($parametersAcceptor !== null) {
3151: $expr = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $expr) ?? $expr;
3152: $returnType = $parametersAcceptor->getReturnType();
3153: $isAlwaysTerminating = $returnType instanceof NeverType && $returnType->isExplicit();
3154: }
3155: $result = $this->processArgs($stmt, $methodReflection, null, $parametersAcceptor, $expr, $scope, $nodeCallback, $context, $closureBindScope ?? null);
3156: $scope = $result->getScope();
3157: $scopeFunction = $scope->getFunction();
3158:
3159: if (
3160: $methodReflection !== null
3161: && (
3162: $methodReflection->hasSideEffects()->yes()
3163: || (
3164: !$methodReflection->isStatic()
3165: && $methodReflection->getName() === '__construct'
3166: )
3167: )
3168: && $scope->isInClass()
3169: && $scope->getClassReflection()->is($methodReflection->getDeclaringClass()->getName())
3170: ) {
3171: $scope = $scope->invalidateExpression(new Variable('this'), true);
3172: }
3173:
3174: if (
3175: $methodReflection !== null
3176: && !$methodReflection->isStatic()
3177: && $methodReflection->getName() === '__construct'
3178: && $scopeFunction instanceof MethodReflection
3179: && !$scopeFunction->isStatic()
3180: && $scope->isInClass()
3181: && $scope->getClassReflection()->isSubclassOfClass($methodReflection->getDeclaringClass())
3182: ) {
3183: $thisType = $scope->getType(new Variable('this'));
3184: $methodClassReflection = $methodReflection->getDeclaringClass();
3185: foreach ($methodClassReflection->getNativeReflection()->getProperties(ReflectionProperty::IS_PUBLIC | ReflectionProperty::IS_PROTECTED) as $property) {
3186: if (!$property->isPromoted() || $property->getDeclaringClass()->getName() !== $methodClassReflection->getName()) {
3187: continue;
3188: }
3189:
3190: $scope = $scope->assignInitializedProperty($thisType, $property->getName());
3191: }
3192: }
3193:
3194: $hasYield = $hasYield || $result->hasYield();
3195: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3196: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3197: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3198: } elseif ($expr instanceof PropertyFetch) {
3199: $scopeBeforeVar = $scope;
3200: $result = $this->processExprNode($stmt, $expr->var, $scope, $nodeCallback, $context->enterDeep());
3201: $hasYield = $result->hasYield();
3202: $throwPoints = $result->getThrowPoints();
3203: $impurePoints = $result->getImpurePoints();
3204: $isAlwaysTerminating = $result->isAlwaysTerminating();
3205: $scope = $result->getScope();
3206: if ($expr->name instanceof Expr) {
3207: $result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
3208: $hasYield = $hasYield || $result->hasYield();
3209: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3210: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3211: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3212: $scope = $result->getScope();
3213: if ($this->phpVersion->supportsPropertyHooks()) {
3214: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
3215: }
3216: } else {
3217: $propertyName = $expr->name->toString();
3218: $propertyHolderType = $scopeBeforeVar->getType($expr->var);
3219: $propertyReflection = $scopeBeforeVar->getPropertyReflection($propertyHolderType, $propertyName);
3220: if ($propertyReflection !== null && $this->phpVersion->supportsPropertyHooks()) {
3221: $propertyDeclaringClass = $propertyReflection->getDeclaringClass();
3222: if ($propertyDeclaringClass->hasNativeProperty($propertyName)) {
3223: $nativeProperty = $propertyDeclaringClass->getNativeProperty($propertyName);
3224: $throwPoints = array_merge($throwPoints, $this->getPropertyReadThrowPointsFromGetHook($scopeBeforeVar, $expr, $nativeProperty));
3225: }
3226: }
3227: }
3228: } elseif ($expr instanceof Expr\NullsafePropertyFetch) {
3229: $nonNullabilityResult = $this->ensureShallowNonNullability($scope, $scope, $expr->var);
3230: $exprResult = $this->processExprNode($stmt, new PropertyFetch($expr->var, $expr->name, array_merge($expr->getAttributes(), ['virtualNullsafePropertyFetch' => true])), $nonNullabilityResult->getScope(), $nodeCallback, $context);
3231: $scope = $this->revertNonNullability($exprResult->getScope(), $nonNullabilityResult->getSpecifiedExpressions());
3232:
3233: return new ExpressionResult(
3234: $scope,
3235: $exprResult->hasYield(),
3236: false,
3237: $exprResult->getThrowPoints(),
3238: $exprResult->getImpurePoints(),
3239: static fn (): MutatingScope => $scope->filterByTruthyValue($expr),
3240: static fn (): MutatingScope => $scope->filterByFalseyValue($expr),
3241: );
3242: } elseif ($expr instanceof StaticPropertyFetch) {
3243: $hasYield = false;
3244: $throwPoints = [];
3245: $impurePoints = [
3246: new ImpurePoint(
3247: $scope,
3248: $expr,
3249: 'staticPropertyAccess',
3250: 'static property access',
3251: true,
3252: ),
3253: ];
3254: $isAlwaysTerminating = false;
3255: if ($expr->class instanceof Expr) {
3256: $result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
3257: $hasYield = $result->hasYield();
3258: $throwPoints = $result->getThrowPoints();
3259: $impurePoints = $result->getImpurePoints();
3260: $isAlwaysTerminating = $result->isAlwaysTerminating();
3261: $scope = $result->getScope();
3262: }
3263: if ($expr->name instanceof Expr) {
3264: $result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
3265: $hasYield = $hasYield || $result->hasYield();
3266: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3267: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3268: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3269: $scope = $result->getScope();
3270: }
3271: } elseif ($expr instanceof Expr\Closure) {
3272: $processClosureResult = $this->processClosureNode($stmt, $expr, $scope, $nodeCallback, $context, null);
3273:
3274: return new ExpressionResult(
3275: $processClosureResult->getScope(),
3276: false,
3277: false,
3278: [],
3279: [],
3280: );
3281: } elseif ($expr instanceof Expr\ArrowFunction) {
3282: $result = $this->processArrowFunctionNode($stmt, $expr, $scope, $nodeCallback, null);
3283: return new ExpressionResult(
3284: $result->getScope(),
3285: $result->hasYield(),
3286: false,
3287: [],
3288: [],
3289: );
3290: } elseif ($expr instanceof ErrorSuppress) {
3291: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context);
3292: $hasYield = $result->hasYield();
3293: $throwPoints = $result->getThrowPoints();
3294: $impurePoints = $result->getImpurePoints();
3295: $isAlwaysTerminating = $result->isAlwaysTerminating();
3296: $scope = $result->getScope();
3297: } elseif ($expr instanceof Exit_) {
3298: $hasYield = false;
3299: $throwPoints = [];
3300: $kind = $expr->getAttribute('kind', Exit_::KIND_EXIT);
3301: $identifier = $kind === Exit_::KIND_DIE ? 'die' : 'exit';
3302: $impurePoints = [
3303: new ImpurePoint($scope, $expr, $identifier, $identifier, true),
3304: ];
3305: $isAlwaysTerminating = true;
3306: if ($expr->expr !== null) {
3307: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3308: $hasYield = $result->hasYield();
3309: $throwPoints = $result->getThrowPoints();
3310: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3311: $scope = $result->getScope();
3312: }
3313: } elseif ($expr instanceof Node\Scalar\InterpolatedString) {
3314: $hasYield = false;
3315: $throwPoints = [];
3316: $impurePoints = [];
3317: $isAlwaysTerminating = false;
3318: foreach ($expr->parts as $part) {
3319: if (!$part instanceof Expr) {
3320: continue;
3321: }
3322: $result = $this->processExprNode($stmt, $part, $scope, $nodeCallback, $context->enterDeep());
3323: $hasYield = $hasYield || $result->hasYield();
3324: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3325: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3326: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3327: $scope = $result->getScope();
3328: }
3329: } elseif ($expr instanceof ArrayDimFetch) {
3330: $hasYield = false;
3331: $throwPoints = [];
3332: $impurePoints = [];
3333: $isAlwaysTerminating = false;
3334: if ($expr->dim !== null) {
3335: $result = $this->processExprNode($stmt, $expr->dim, $scope, $nodeCallback, $context->enterDeep());
3336: $hasYield = $result->hasYield();
3337: $throwPoints = $result->getThrowPoints();
3338: $impurePoints = $result->getImpurePoints();
3339: $isAlwaysTerminating = $result->isAlwaysTerminating();
3340: $scope = $result->getScope();
3341: }
3342:
3343: $result = $this->processExprNode($stmt, $expr->var, $scope, $nodeCallback, $context->enterDeep());
3344: $hasYield = $hasYield || $result->hasYield();
3345: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3346: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3347: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3348: $scope = $result->getScope();
3349: } elseif ($expr instanceof Array_) {
3350: $itemNodes = [];
3351: $hasYield = false;
3352: $throwPoints = [];
3353: $impurePoints = [];
3354: $isAlwaysTerminating = false;
3355: foreach ($expr->items as $arrayItem) {
3356: $itemNodes[] = new LiteralArrayItem($scope, $arrayItem);
3357: $nodeCallback($arrayItem, $scope);
3358: if ($arrayItem->key !== null) {
3359: $keyResult = $this->processExprNode($stmt, $arrayItem->key, $scope, $nodeCallback, $context->enterDeep());
3360: $hasYield = $hasYield || $keyResult->hasYield();
3361: $throwPoints = array_merge($throwPoints, $keyResult->getThrowPoints());
3362: $impurePoints = array_merge($impurePoints, $keyResult->getImpurePoints());
3363: $isAlwaysTerminating = $isAlwaysTerminating || $keyResult->isAlwaysTerminating();
3364: $scope = $keyResult->getScope();
3365: }
3366:
3367: $valueResult = $this->processExprNode($stmt, $arrayItem->value, $scope, $nodeCallback, $context->enterDeep());
3368: $hasYield = $hasYield || $valueResult->hasYield();
3369: $throwPoints = array_merge($throwPoints, $valueResult->getThrowPoints());
3370: $impurePoints = array_merge($impurePoints, $valueResult->getImpurePoints());
3371: $isAlwaysTerminating = $isAlwaysTerminating || $valueResult->isAlwaysTerminating();
3372: $scope = $valueResult->getScope();
3373: }
3374: $nodeCallback(new LiteralArrayNode($expr, $itemNodes), $scope);
3375: } elseif ($expr instanceof BooleanAnd || $expr instanceof BinaryOp\LogicalAnd) {
3376: $leftResult = $this->processExprNode($stmt, $expr->left, $scope, $nodeCallback, $context->enterDeep());
3377: $rightResult = $this->processExprNode($stmt, $expr->right, $leftResult->getTruthyScope(), $nodeCallback, $context);
3378: $rightExprType = $rightResult->getScope()->getType($expr->right);
3379: if ($rightExprType instanceof NeverType && $rightExprType->isExplicit()) {
3380: $leftMergedWithRightScope = $leftResult->getFalseyScope();
3381: } else {
3382: $leftMergedWithRightScope = $leftResult->getScope()->mergeWith($rightResult->getScope());
3383: }
3384:
3385: $this->callNodeCallbackWithExpression($nodeCallback, new BooleanAndNode($expr, $leftResult->getTruthyScope()), $scope, $context);
3386:
3387: return new ExpressionResult(
3388: $leftMergedWithRightScope,
3389: $leftResult->hasYield() || $rightResult->hasYield(),
3390: $leftResult->isAlwaysTerminating(),
3391: array_merge($leftResult->getThrowPoints(), $rightResult->getThrowPoints()),
3392: array_merge($leftResult->getImpurePoints(), $rightResult->getImpurePoints()),
3393: static fn (): MutatingScope => $rightResult->getScope()->filterByTruthyValue($expr),
3394: static fn (): MutatingScope => $leftMergedWithRightScope->filterByFalseyValue($expr),
3395: );
3396: } elseif ($expr instanceof BooleanOr || $expr instanceof BinaryOp\LogicalOr) {
3397: $leftResult = $this->processExprNode($stmt, $expr->left, $scope, $nodeCallback, $context->enterDeep());
3398: $rightResult = $this->processExprNode($stmt, $expr->right, $leftResult->getFalseyScope(), $nodeCallback, $context);
3399: $rightExprType = $rightResult->getScope()->getType($expr->right);
3400: if ($rightExprType instanceof NeverType && $rightExprType->isExplicit()) {
3401: $leftMergedWithRightScope = $leftResult->getTruthyScope();
3402: } else {
3403: $leftMergedWithRightScope = $leftResult->getScope()->mergeWith($rightResult->getScope());
3404: }
3405:
3406: $this->callNodeCallbackWithExpression($nodeCallback, new BooleanOrNode($expr, $leftResult->getFalseyScope()), $scope, $context);
3407:
3408: return new ExpressionResult(
3409: $leftMergedWithRightScope,
3410: $leftResult->hasYield() || $rightResult->hasYield(),
3411: $leftResult->isAlwaysTerminating(),
3412: array_merge($leftResult->getThrowPoints(), $rightResult->getThrowPoints()),
3413: array_merge($leftResult->getImpurePoints(), $rightResult->getImpurePoints()),
3414: static fn (): MutatingScope => $leftMergedWithRightScope->filterByTruthyValue($expr),
3415: static fn (): MutatingScope => $rightResult->getScope()->filterByFalseyValue($expr),
3416: );
3417: } elseif ($expr instanceof Coalesce) {
3418: $nonNullabilityResult = $this->ensureNonNullability($scope, $expr->left);
3419: $condScope = $this->lookForSetAllowedUndefinedExpressions($nonNullabilityResult->getScope(), $expr->left);
3420: $condResult = $this->processExprNode($stmt, $expr->left, $condScope, $nodeCallback, $context->enterDeep());
3421: $scope = $this->revertNonNullability($condResult->getScope(), $nonNullabilityResult->getSpecifiedExpressions());
3422: $scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $expr->left);
3423:
3424: $rightScope = $scope->filterByFalseyValue($expr);
3425: $rightResult = $this->processExprNode($stmt, $expr->right, $rightScope, $nodeCallback, $context->enterDeep());
3426: $rightExprType = $scope->getType($expr->right);
3427: if ($rightExprType instanceof NeverType && $rightExprType->isExplicit()) {
3428: $scope = $scope->filterByTruthyValue(new Expr\Isset_([$expr->left]));
3429: } else {
3430: $scope = $scope->filterByTruthyValue(new Expr\Isset_([$expr->left]))->mergeWith($rightResult->getScope());
3431: }
3432:
3433: $hasYield = $condResult->hasYield() || $rightResult->hasYield();
3434: $throwPoints = array_merge($condResult->getThrowPoints(), $rightResult->getThrowPoints());
3435: $impurePoints = array_merge($condResult->getImpurePoints(), $rightResult->getImpurePoints());
3436: $isAlwaysTerminating = $condResult->isAlwaysTerminating();
3437: } elseif ($expr instanceof BinaryOp) {
3438: $result = $this->processExprNode($stmt, $expr->left, $scope, $nodeCallback, $context->enterDeep());
3439: $scope = $result->getScope();
3440: $hasYield = $result->hasYield();
3441: $throwPoints = $result->getThrowPoints();
3442: $impurePoints = $result->getImpurePoints();
3443: $isAlwaysTerminating = $result->isAlwaysTerminating();
3444: $result = $this->processExprNode($stmt, $expr->right, $scope, $nodeCallback, $context->enterDeep());
3445: if (
3446: ($expr instanceof BinaryOp\Div || $expr instanceof BinaryOp\Mod) &&
3447: !$scope->getType($expr->right)->toNumber()->isSuperTypeOf(new ConstantIntegerType(0))->no()
3448: ) {
3449: $throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(DivisionByZeroError::class), $expr, false);
3450: }
3451: $scope = $result->getScope();
3452: $hasYield = $hasYield || $result->hasYield();
3453: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3454: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3455: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3456: } elseif ($expr instanceof Expr\Include_) {
3457: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3458: $throwPoints = $result->getThrowPoints();
3459: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
3460: $impurePoints = $result->getImpurePoints();
3461: $impurePoints[] = new ImpurePoint(
3462: $scope,
3463: $expr,
3464: in_array($expr->type, [Expr\Include_::TYPE_INCLUDE, Expr\Include_::TYPE_INCLUDE_ONCE], true) ? 'include' : 'require',
3465: in_array($expr->type, [Expr\Include_::TYPE_INCLUDE, Expr\Include_::TYPE_INCLUDE_ONCE], true) ? 'include' : 'require',
3466: true,
3467: );
3468: $hasYield = $result->hasYield();
3469: $isAlwaysTerminating = $result->isAlwaysTerminating();
3470: $scope = $result->getScope()->afterExtractCall();
3471: } elseif ($expr instanceof Expr\Print_) {
3472: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3473: $throwPoints = $result->getThrowPoints();
3474: $impurePoints = $result->getImpurePoints();
3475: $isAlwaysTerminating = $result->isAlwaysTerminating();
3476: $impurePoints[] = new ImpurePoint($scope, $expr, 'print', 'print', true);
3477: $hasYield = $result->hasYield();
3478:
3479: $scope = $result->getScope();
3480: } elseif ($expr instanceof Cast\String_) {
3481: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3482: $throwPoints = $result->getThrowPoints();
3483: $impurePoints = $result->getImpurePoints();
3484: $isAlwaysTerminating = $result->isAlwaysTerminating();
3485: $hasYield = $result->hasYield();
3486:
3487: $exprType = $scope->getType($expr->expr);
3488: $toStringMethod = $scope->getMethodReflection($exprType, '__toString');
3489: if ($toStringMethod !== null) {
3490: if (!$toStringMethod->hasSideEffects()->no()) {
3491: $impurePoints[] = new ImpurePoint(
3492: $scope,
3493: $expr,
3494: 'methodCall',
3495: sprintf('call to method %s::%s()', $toStringMethod->getDeclaringClass()->getDisplayName(), $toStringMethod->getName()),
3496: $toStringMethod->isPure()->no(),
3497: );
3498: }
3499: }
3500:
3501: $scope = $result->getScope();
3502: } elseif (
3503: $expr instanceof Expr\BitwiseNot
3504: || $expr instanceof Cast
3505: || $expr instanceof Expr\Clone_
3506: || $expr instanceof Expr\UnaryMinus
3507: || $expr instanceof Expr\UnaryPlus
3508: ) {
3509: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3510: $throwPoints = $result->getThrowPoints();
3511: $impurePoints = $result->getImpurePoints();
3512: $isAlwaysTerminating = $result->isAlwaysTerminating();
3513: $hasYield = $result->hasYield();
3514:
3515: $scope = $result->getScope();
3516: } elseif ($expr instanceof Expr\Eval_) {
3517: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3518: $throwPoints = $result->getThrowPoints();
3519: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
3520: $impurePoints = $result->getImpurePoints();
3521: $impurePoints[] = new ImpurePoint($scope, $expr, 'eval', 'eval', true);
3522: $hasYield = $result->hasYield();
3523: $isAlwaysTerminating = $result->isAlwaysTerminating();
3524:
3525: $scope = $result->getScope();
3526: } elseif ($expr instanceof Expr\YieldFrom) {
3527: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3528: $throwPoints = $result->getThrowPoints();
3529: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
3530: $impurePoints = $result->getImpurePoints();
3531: $impurePoints[] = new ImpurePoint(
3532: $scope,
3533: $expr,
3534: 'yieldFrom',
3535: 'yield from',
3536: true,
3537: );
3538: $hasYield = true;
3539: $isAlwaysTerminating = $result->isAlwaysTerminating();
3540:
3541: $scope = $result->getScope();
3542: } elseif ($expr instanceof BooleanNot) {
3543: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3544: $scope = $result->getScope();
3545: $hasYield = $result->hasYield();
3546: $throwPoints = $result->getThrowPoints();
3547: $impurePoints = $result->getImpurePoints();
3548: $isAlwaysTerminating = $result->isAlwaysTerminating();
3549: } elseif ($expr instanceof Expr\ClassConstFetch) {
3550: $isAlwaysTerminating = false;
3551:
3552: if ($expr->class instanceof Expr) {
3553: $result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
3554: $scope = $result->getScope();
3555: $hasYield = $result->hasYield();
3556: $throwPoints = $result->getThrowPoints();
3557: $impurePoints = $result->getImpurePoints();
3558: $isAlwaysTerminating = $result->isAlwaysTerminating();
3559: } else {
3560: $hasYield = false;
3561: $throwPoints = [];
3562: $impurePoints = [];
3563: $nodeCallback($expr->class, $scope);
3564: }
3565:
3566: if ($expr->name instanceof Expr) {
3567: $result = $this->processExprNode($stmt, $expr->name, $scope, $nodeCallback, $context->enterDeep());
3568: $scope = $result->getScope();
3569: $hasYield = $hasYield || $result->hasYield();
3570: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3571: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3572: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3573: } else {
3574: $nodeCallback($expr->name, $scope);
3575: }
3576: } elseif ($expr instanceof Expr\Empty_) {
3577: $nonNullabilityResult = $this->ensureNonNullability($scope, $expr->expr);
3578: $scope = $this->lookForSetAllowedUndefinedExpressions($nonNullabilityResult->getScope(), $expr->expr);
3579: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3580: $scope = $result->getScope();
3581: $hasYield = $result->hasYield();
3582: $throwPoints = $result->getThrowPoints();
3583: $impurePoints = $result->getImpurePoints();
3584: $isAlwaysTerminating = $result->isAlwaysTerminating();
3585: $scope = $this->revertNonNullability($scope, $nonNullabilityResult->getSpecifiedExpressions());
3586: $scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $expr->expr);
3587: } elseif ($expr instanceof Expr\Isset_) {
3588: $hasYield = false;
3589: $throwPoints = [];
3590: $impurePoints = [];
3591: $nonNullabilityResults = [];
3592: $isAlwaysTerminating = false;
3593: foreach ($expr->vars as $var) {
3594: $nonNullabilityResult = $this->ensureNonNullability($scope, $var);
3595: $scope = $this->lookForSetAllowedUndefinedExpressions($nonNullabilityResult->getScope(), $var);
3596: $result = $this->processExprNode($stmt, $var, $scope, $nodeCallback, $context->enterDeep());
3597: $scope = $result->getScope();
3598: $hasYield = $hasYield || $result->hasYield();
3599: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3600: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3601: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3602: $nonNullabilityResults[] = $nonNullabilityResult;
3603: }
3604: foreach (array_reverse($expr->vars) as $var) {
3605: $scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $var);
3606: }
3607: foreach (array_reverse($nonNullabilityResults) as $nonNullabilityResult) {
3608: $scope = $this->revertNonNullability($scope, $nonNullabilityResult->getSpecifiedExpressions());
3609: }
3610: } elseif ($expr instanceof Instanceof_) {
3611: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, $context->enterDeep());
3612: $scope = $result->getScope();
3613: $hasYield = $result->hasYield();
3614: $throwPoints = $result->getThrowPoints();
3615: $impurePoints = $result->getImpurePoints();
3616: $isAlwaysTerminating = $result->isAlwaysTerminating();
3617: if ($expr->class instanceof Expr) {
3618: $result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
3619: $scope = $result->getScope();
3620: $hasYield = $hasYield || $result->hasYield();
3621: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3622: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3623: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3624: }
3625: } elseif ($expr instanceof List_) {
3626: // only in assign and foreach, processed elsewhere
3627: return new ExpressionResult($scope, false, false, [], []);
3628: } elseif ($expr instanceof New_) {
3629: $parametersAcceptor = null;
3630: $constructorReflection = null;
3631: $hasYield = false;
3632: $throwPoints = [];
3633: $impurePoints = [];
3634: $isAlwaysTerminating = false;
3635: $className = null;
3636: if ($expr->class instanceof Expr || $expr->class instanceof Name) {
3637: if ($expr->class instanceof Expr) {
3638: $objectClasses = $scope->getType($expr)->getObjectClassNames();
3639: if (count($objectClasses) === 1) {
3640: $objectExprResult = $this->processExprNode($stmt, new New_(new Name($objectClasses[0])), $scope, static function (): void {
3641: }, $context->enterDeep());
3642: $className = $objectClasses[0];
3643: $additionalThrowPoints = $objectExprResult->getThrowPoints();
3644: } else {
3645: $additionalThrowPoints = [ThrowPoint::createImplicit($scope, $expr)];
3646: }
3647:
3648: $result = $this->processExprNode($stmt, $expr->class, $scope, $nodeCallback, $context->enterDeep());
3649: $scope = $result->getScope();
3650: $hasYield = $result->hasYield();
3651: $throwPoints = $result->getThrowPoints();
3652: $impurePoints = $result->getImpurePoints();
3653: $isAlwaysTerminating = $result->isAlwaysTerminating();
3654: foreach ($additionalThrowPoints as $throwPoint) {
3655: $throwPoints[] = $throwPoint;
3656: }
3657: } else {
3658: $className = $scope->resolveName($expr->class);
3659: }
3660:
3661: $classReflection = null;
3662: if ($className !== null && $this->reflectionProvider->hasClass($className)) {
3663: $classReflection = $this->reflectionProvider->getClass($className);
3664: if ($classReflection->hasConstructor()) {
3665: $constructorReflection = $classReflection->getConstructor();
3666: $parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
3667: $scope,
3668: $expr->getArgs(),
3669: $constructorReflection->getVariants(),
3670: $constructorReflection->getNamedArgumentsVariants(),
3671: );
3672: $constructorThrowPoint = $this->getConstructorThrowPoint($constructorReflection, $parametersAcceptor, $classReflection, $expr, new Name\FullyQualified($className), $expr->getArgs(), $scope);
3673: if ($constructorThrowPoint !== null) {
3674: $throwPoints[] = $constructorThrowPoint;
3675: }
3676: }
3677: } else {
3678: $throwPoints[] = ThrowPoint::createImplicit($scope, $expr);
3679: }
3680:
3681: if ($constructorReflection !== null) {
3682: if (!$constructorReflection->hasSideEffects()->no()) {
3683: $certain = $constructorReflection->isPure()->no();
3684: $impurePoints[] = new ImpurePoint(
3685: $scope,
3686: $expr,
3687: 'new',
3688: sprintf('instantiation of class %s', $constructorReflection->getDeclaringClass()->getDisplayName()),
3689: $certain,
3690: );
3691: }
3692: } elseif ($classReflection === null) {
3693: $impurePoints[] = new ImpurePoint(
3694: $scope,
3695: $expr,
3696: 'new',
3697: 'instantiation of unknown class',
3698: false,
3699: );
3700: }
3701:
3702: if ($parametersAcceptor !== null) {
3703: $expr = ArgumentsNormalizer::reorderNewArguments($parametersAcceptor, $expr) ?? $expr;
3704: }
3705:
3706: } else {
3707: $classReflection = $this->reflectionProvider->getAnonymousClassReflection($expr->class, $scope); // populates $expr->class->name
3708: $constructorResult = null;
3709: $this->processStmtNode($expr->class, $scope, static function (Node $node, Scope $scope) use ($nodeCallback, $classReflection, &$constructorResult): void {
3710: $nodeCallback($node, $scope);
3711: if (!$node instanceof MethodReturnStatementsNode) {
3712: return;
3713: }
3714: if ($constructorResult !== null) {
3715: return;
3716: }
3717: $currentClassReflection = $node->getClassReflection();
3718: if ($currentClassReflection->getName() !== $classReflection->getName()) {
3719: return;
3720: }
3721: if (!$currentClassReflection->hasConstructor()) {
3722: return;
3723: }
3724: if ($currentClassReflection->getConstructor()->getName() !== $node->getMethodReflection()->getName()) {
3725: return;
3726: }
3727: $constructorResult = $node;
3728: }, StatementContext::createTopLevel());
3729: if ($constructorResult !== null) {
3730: $throwPoints = array_merge($throwPoints, $constructorResult->getStatementResult()->getThrowPoints());
3731: $impurePoints = array_merge($impurePoints, $constructorResult->getImpurePoints());
3732: }
3733: if ($classReflection->hasConstructor()) {
3734: $constructorReflection = $classReflection->getConstructor();
3735: $parametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
3736: $scope,
3737: $expr->getArgs(),
3738: $constructorReflection->getVariants(),
3739: $constructorReflection->getNamedArgumentsVariants(),
3740: );
3741: }
3742: }
3743:
3744: $result = $this->processArgs($stmt, $constructorReflection, null, $parametersAcceptor, $expr, $scope, $nodeCallback, $context);
3745: $scope = $result->getScope();
3746: $hasYield = $hasYield || $result->hasYield();
3747: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
3748: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
3749: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
3750: } elseif (
3751: $expr instanceof Expr\PreInc
3752: || $expr instanceof Expr\PostInc
3753: || $expr instanceof Expr\PreDec
3754: || $expr instanceof Expr\PostDec
3755: ) {
3756: $result = $this->processExprNode($stmt, $expr->var, $scope, $nodeCallback, $context->enterDeep());
3757: $scope = $result->getScope();
3758: $hasYield = $result->hasYield();
3759: $throwPoints = $result->getThrowPoints();
3760: $impurePoints = $result->getImpurePoints();
3761: $isAlwaysTerminating = $result->isAlwaysTerminating();
3762:
3763: $newExpr = $expr;
3764: if ($expr instanceof Expr\PostInc) {
3765: $newExpr = new Expr\PreInc($expr->var);
3766: } elseif ($expr instanceof Expr\PostDec) {
3767: $newExpr = new Expr\PreDec($expr->var);
3768: }
3769:
3770: $scope = $this->processAssignVar(
3771: $scope,
3772: $stmt,
3773: $expr->var,
3774: $newExpr,
3775: static function (Node $node, Scope $scope) use ($nodeCallback): void {
3776: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
3777: return;
3778: }
3779:
3780: $nodeCallback($node, $scope);
3781: },
3782: $context,
3783: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
3784: false,
3785: )->getScope();
3786: } elseif ($expr instanceof Ternary) {
3787: $ternaryCondResult = $this->processExprNode($stmt, $expr->cond, $scope, $nodeCallback, $context->enterDeep());
3788: $throwPoints = $ternaryCondResult->getThrowPoints();
3789: $impurePoints = $ternaryCondResult->getImpurePoints();
3790: $isAlwaysTerminating = $ternaryCondResult->isAlwaysTerminating();
3791: $ifTrueScope = $ternaryCondResult->getTruthyScope();
3792: $ifFalseScope = $ternaryCondResult->getFalseyScope();
3793: $ifTrueType = null;
3794: if ($expr->if !== null) {
3795: $ifResult = $this->processExprNode($stmt, $expr->if, $ifTrueScope, $nodeCallback, $context);
3796: $throwPoints = array_merge($throwPoints, $ifResult->getThrowPoints());
3797: $impurePoints = array_merge($impurePoints, $ifResult->getImpurePoints());
3798: $ifTrueScope = $ifResult->getScope();
3799: $ifTrueType = $ifTrueScope->getType($expr->if);
3800: }
3801:
3802: $elseResult = $this->processExprNode($stmt, $expr->else, $ifFalseScope, $nodeCallback, $context);
3803: $throwPoints = array_merge($throwPoints, $elseResult->getThrowPoints());
3804: $impurePoints = array_merge($impurePoints, $elseResult->getImpurePoints());
3805: $ifFalseScope = $elseResult->getScope();
3806:
3807: $condType = $scope->getType($expr->cond);
3808: if ($condType->isTrue()->yes()) {
3809: $finalScope = $ifTrueScope;
3810: } elseif ($condType->isFalse()->yes()) {
3811: $finalScope = $ifFalseScope;
3812: } else {
3813: if ($ifTrueType instanceof NeverType && $ifTrueType->isExplicit()) {
3814: $finalScope = $ifFalseScope;
3815: } else {
3816: $ifFalseType = $ifFalseScope->getType($expr->else);
3817:
3818: if ($ifFalseType instanceof NeverType && $ifFalseType->isExplicit()) {
3819: $finalScope = $ifTrueScope;
3820: } else {
3821: $finalScope = $ifTrueScope->mergeWith($ifFalseScope);
3822: }
3823: }
3824: }
3825:
3826: return new ExpressionResult(
3827: $finalScope,
3828: $ternaryCondResult->hasYield(),
3829: $isAlwaysTerminating,
3830: $throwPoints,
3831: $impurePoints,
3832: static fn (): MutatingScope => $finalScope->filterByTruthyValue($expr),
3833: static fn (): MutatingScope => $finalScope->filterByFalseyValue($expr),
3834: );
3835:
3836: } elseif ($expr instanceof Expr\Yield_) {
3837: $throwPoints = [
3838: ThrowPoint::createImplicit($scope, $expr),
3839: ];
3840: $impurePoints = [
3841: new ImpurePoint(
3842: $scope,
3843: $expr,
3844: 'yield',
3845: 'yield',
3846: true,
3847: ),
3848: ];
3849: $isAlwaysTerminating = false;
3850: if ($expr->key !== null) {
3851: $keyResult = $this->processExprNode($stmt, $expr->key, $scope, $nodeCallback, $context->enterDeep());
3852: $scope = $keyResult->getScope();
3853: $throwPoints = $keyResult->getThrowPoints();
3854: $impurePoints = array_merge($impurePoints, $keyResult->getImpurePoints());
3855: $isAlwaysTerminating = $keyResult->isAlwaysTerminating();
3856: }
3857: if ($expr->value !== null) {
3858: $valueResult = $this->processExprNode($stmt, $expr->value, $scope, $nodeCallback, $context->enterDeep());
3859: $scope = $valueResult->getScope();
3860: $throwPoints = array_merge($throwPoints, $valueResult->getThrowPoints());
3861: $impurePoints = array_merge($impurePoints, $valueResult->getImpurePoints());
3862: $isAlwaysTerminating = $isAlwaysTerminating || $valueResult->isAlwaysTerminating();
3863: }
3864: $hasYield = true;
3865: } elseif ($expr instanceof Expr\Match_) {
3866: $deepContext = $context->enterDeep();
3867: $condType = $scope->getType($expr->cond);
3868: $condResult = $this->processExprNode($stmt, $expr->cond, $scope, $nodeCallback, $deepContext);
3869: $scope = $condResult->getScope();
3870: $hasYield = $condResult->hasYield();
3871: $throwPoints = $condResult->getThrowPoints();
3872: $impurePoints = $condResult->getImpurePoints();
3873: $isAlwaysTerminating = $condResult->isAlwaysTerminating();
3874: $matchScope = $scope->enterMatch($expr);
3875: $armNodes = [];
3876: $hasDefaultCond = false;
3877: $hasAlwaysTrueCond = false;
3878: $arms = $expr->arms;
3879: if ($condType->isEnum()->yes()) {
3880: // enum match analysis would work even without this if branch
3881: // but would be much slower
3882: // this avoids using ObjectType::$subtractedType which is slow for huge enums
3883: // because of repeated union type normalization
3884: $enumCases = $condType->getEnumCases();
3885: if (count($enumCases) > 0) {
3886: $indexedEnumCases = [];
3887: foreach ($enumCases as $enumCase) {
3888: $indexedEnumCases[strtolower($enumCase->getClassName())][$enumCase->getEnumCaseName()] = $enumCase;
3889: }
3890: $unusedIndexedEnumCases = $indexedEnumCases;
3891: foreach ($arms as $i => $arm) {
3892: if ($arm->conds === null) {
3893: continue;
3894: }
3895:
3896: $condNodes = [];
3897: $conditionCases = [];
3898: $conditionExprs = [];
3899: foreach ($arm->conds as $cond) {
3900: if (!$cond instanceof Expr\ClassConstFetch) {
3901: continue 2;
3902: }
3903: if (!$cond->class instanceof Name) {
3904: continue 2;
3905: }
3906: if (!$cond->name instanceof Node\Identifier) {
3907: continue 2;
3908: }
3909: $fetchedClassName = $scope->resolveName($cond->class);
3910: $loweredFetchedClassName = strtolower($fetchedClassName);
3911: if (!array_key_exists($loweredFetchedClassName, $indexedEnumCases)) {
3912: continue 2;
3913: }
3914:
3915: if (!array_key_exists($loweredFetchedClassName, $unusedIndexedEnumCases)) {
3916: throw new ShouldNotHappenException();
3917: }
3918:
3919: $caseName = $cond->name->toString();
3920: if (!array_key_exists($caseName, $indexedEnumCases[$loweredFetchedClassName])) {
3921: continue 2;
3922: }
3923:
3924: $enumCase = $indexedEnumCases[$loweredFetchedClassName][$caseName];
3925: $conditionCases[] = $enumCase;
3926: $armConditionScope = $matchScope;
3927: if (!array_key_exists($caseName, $unusedIndexedEnumCases[$loweredFetchedClassName])) {
3928: // force "always false"
3929: $armConditionScope = $armConditionScope->removeTypeFromExpression(
3930: $expr->cond,
3931: $enumCase,
3932: );
3933: } else {
3934: $unusedCasesCount = 0;
3935: foreach ($unusedIndexedEnumCases as $cases) {
3936: $unusedCasesCount += count($cases);
3937: }
3938: if ($unusedCasesCount === 1) {
3939: $hasAlwaysTrueCond = true;
3940:
3941: // force "always true"
3942: $armConditionScope = $armConditionScope->addTypeToExpression(
3943: $expr->cond,
3944: $enumCase,
3945: );
3946: }
3947: }
3948:
3949: $this->processExprNode($stmt, $cond, $armConditionScope, $nodeCallback, $deepContext);
3950:
3951: $condNodes[] = new MatchExpressionArmCondition(
3952: $cond,
3953: $armConditionScope,
3954: $cond->getStartLine(),
3955: );
3956: $conditionExprs[] = $cond;
3957:
3958: unset($unusedIndexedEnumCases[$loweredFetchedClassName][$caseName]);
3959: }
3960:
3961: $conditionCasesCount = count($conditionCases);
3962: if ($conditionCasesCount === 0) {
3963: throw new ShouldNotHappenException();
3964: } elseif ($conditionCasesCount === 1) {
3965: $conditionCaseType = $conditionCases[0];
3966: } else {
3967: $conditionCaseType = new UnionType($conditionCases);
3968: }
3969:
3970: $filteringExpr = $this->getFilteringExprForMatchArm($expr, $conditionExprs);
3971: $matchArmBodyScope = $matchScope->addTypeToExpression(
3972: $expr->cond,
3973: $conditionCaseType,
3974: )->filterByTruthyValue($filteringExpr);
3975: $matchArmBody = new MatchExpressionArmBody($matchArmBodyScope, $arm->body);
3976: $armNodes[$i] = new MatchExpressionArm($matchArmBody, $condNodes, $arm->getStartLine());
3977:
3978: $armResult = $this->processExprNode(
3979: $stmt,
3980: $arm->body,
3981: $matchArmBodyScope,
3982: $nodeCallback,
3983: ExpressionContext::createTopLevel(),
3984: );
3985: $armScope = $armResult->getScope();
3986: $scope = $scope->mergeWith($armScope);
3987: $hasYield = $hasYield || $armResult->hasYield();
3988: $throwPoints = array_merge($throwPoints, $armResult->getThrowPoints());
3989: $impurePoints = array_merge($impurePoints, $armResult->getImpurePoints());
3990:
3991: unset($arms[$i]);
3992: }
3993:
3994: $remainingCases = [];
3995: foreach ($unusedIndexedEnumCases as $cases) {
3996: foreach ($cases as $case) {
3997: $remainingCases[] = $case;
3998: }
3999: }
4000:
4001: $remainingCasesCount = count($remainingCases);
4002: if ($remainingCasesCount === 0) {
4003: $remainingType = new NeverType();
4004: } elseif ($remainingCasesCount === 1) {
4005: $remainingType = $remainingCases[0];
4006: } else {
4007: $remainingType = new UnionType($remainingCases);
4008: }
4009:
4010: $matchScope = $matchScope->addTypeToExpression($expr->cond, $remainingType);
4011: }
4012: }
4013: foreach ($arms as $i => $arm) {
4014: if ($arm->conds === null) {
4015: $hasDefaultCond = true;
4016: $matchArmBody = new MatchExpressionArmBody($matchScope, $arm->body);
4017: $armNodes[$i] = new MatchExpressionArm($matchArmBody, [], $arm->getStartLine());
4018: $armResult = $this->processExprNode($stmt, $arm->body, $matchScope, $nodeCallback, ExpressionContext::createTopLevel());
4019: $matchScope = $armResult->getScope();
4020: $hasYield = $hasYield || $armResult->hasYield();
4021: $throwPoints = array_merge($throwPoints, $armResult->getThrowPoints());
4022: $impurePoints = array_merge($impurePoints, $armResult->getImpurePoints());
4023: $scope = $scope->mergeWith($matchScope);
4024: continue;
4025: }
4026:
4027: if (count($arm->conds) === 0) {
4028: throw new ShouldNotHappenException();
4029: }
4030:
4031: $filteringExprs = [];
4032: $armCondScope = $matchScope;
4033: $condNodes = [];
4034: foreach ($arm->conds as $armCond) {
4035: $condNodes[] = new MatchExpressionArmCondition($armCond, $armCondScope, $armCond->getStartLine());
4036: $armCondResult = $this->processExprNode($stmt, $armCond, $armCondScope, $nodeCallback, $deepContext);
4037: $hasYield = $hasYield || $armCondResult->hasYield();
4038: $throwPoints = array_merge($throwPoints, $armCondResult->getThrowPoints());
4039: $impurePoints = array_merge($impurePoints, $armCondResult->getImpurePoints());
4040: $armCondExpr = new BinaryOp\Identical($expr->cond, $armCond);
4041: $armCondResultScope = $armCondResult->getScope();
4042: $armCondType = $this->treatPhpDocTypesAsCertain ? $armCondResultScope->getType($armCondExpr) : $armCondResultScope->getNativeType($armCondExpr);
4043: if ($armCondType->isTrue()->yes()) {
4044: $hasAlwaysTrueCond = true;
4045: }
4046: $armCondScope = $armCondResult->getScope()->filterByFalseyValue($armCondExpr);
4047: $filteringExprs[] = $armCond;
4048: }
4049:
4050: $filteringExpr = $this->getFilteringExprForMatchArm($expr, $filteringExprs);
4051:
4052: $bodyScope = $this->processExprNode($stmt, $filteringExpr, $matchScope, static function (): void {
4053: }, $deepContext)->getTruthyScope();
4054: $matchArmBody = new MatchExpressionArmBody($bodyScope, $arm->body);
4055: $armNodes[$i] = new MatchExpressionArm($matchArmBody, $condNodes, $arm->getStartLine());
4056:
4057: $armResult = $this->processExprNode(
4058: $stmt,
4059: $arm->body,
4060: $bodyScope,
4061: $nodeCallback,
4062: ExpressionContext::createTopLevel(),
4063: );
4064: $armScope = $armResult->getScope();
4065: $scope = $scope->mergeWith($armScope);
4066: $hasYield = $hasYield || $armResult->hasYield();
4067: $throwPoints = array_merge($throwPoints, $armResult->getThrowPoints());
4068: $impurePoints = array_merge($impurePoints, $armResult->getImpurePoints());
4069: $matchScope = $matchScope->filterByFalseyValue($filteringExpr);
4070: }
4071:
4072: $remainingType = $matchScope->getType($expr->cond);
4073: if (!$hasDefaultCond && !$hasAlwaysTrueCond && !$remainingType instanceof NeverType) {
4074: $throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(UnhandledMatchError::class), $expr, false);
4075: }
4076:
4077: ksort($armNodes, SORT_NUMERIC);
4078:
4079: $nodeCallback(new MatchExpressionNode($expr->cond, array_values($armNodes), $expr, $matchScope), $scope);
4080: } elseif ($expr instanceof AlwaysRememberedExpr) {
4081: $result = $this->processExprNode($stmt, $expr->getExpr(), $scope, $nodeCallback, $context);
4082: $hasYield = $result->hasYield();
4083: $throwPoints = $result->getThrowPoints();
4084: $impurePoints = $result->getImpurePoints();
4085: $isAlwaysTerminating = $result->isAlwaysTerminating();
4086: $scope = $result->getScope();
4087: } elseif ($expr instanceof Expr\Throw_) {
4088: $hasYield = false;
4089: $result = $this->processExprNode($stmt, $expr->expr, $scope, $nodeCallback, ExpressionContext::createDeep());
4090: $throwPoints = $result->getThrowPoints();
4091: $impurePoints = $result->getImpurePoints();
4092: $isAlwaysTerminating = $result->isAlwaysTerminating();
4093: $throwPoints[] = ThrowPoint::createExplicit($scope, $scope->getType($expr->expr), $expr, false);
4094: } elseif ($expr instanceof FunctionCallableNode) {
4095: $throwPoints = [];
4096: $impurePoints = [];
4097: $hasYield = false;
4098: $isAlwaysTerminating = false;
4099: if ($expr->getName() instanceof Expr) {
4100: $result = $this->processExprNode($stmt, $expr->getName(), $scope, $nodeCallback, ExpressionContext::createDeep());
4101: $scope = $result->getScope();
4102: $hasYield = $result->hasYield();
4103: $throwPoints = $result->getThrowPoints();
4104: $impurePoints = $result->getImpurePoints();
4105: $isAlwaysTerminating = $result->isAlwaysTerminating();
4106: }
4107: } elseif ($expr instanceof MethodCallableNode) {
4108: $result = $this->processExprNode($stmt, $expr->getVar(), $scope, $nodeCallback, ExpressionContext::createDeep());
4109: $scope = $result->getScope();
4110: $hasYield = $result->hasYield();
4111: $throwPoints = $result->getThrowPoints();
4112: $impurePoints = $result->getImpurePoints();
4113: $isAlwaysTerminating = false;
4114: if ($expr->getName() instanceof Expr) {
4115: $nameResult = $this->processExprNode($stmt, $expr->getVar(), $scope, $nodeCallback, ExpressionContext::createDeep());
4116: $scope = $nameResult->getScope();
4117: $hasYield = $hasYield || $nameResult->hasYield();
4118: $throwPoints = array_merge($throwPoints, $nameResult->getThrowPoints());
4119: $impurePoints = array_merge($impurePoints, $nameResult->getImpurePoints());
4120: $isAlwaysTerminating = $nameResult->isAlwaysTerminating();
4121: }
4122: } elseif ($expr instanceof StaticMethodCallableNode) {
4123: $throwPoints = [];
4124: $impurePoints = [];
4125: $hasYield = false;
4126: $isAlwaysTerminating = false;
4127: if ($expr->getClass() instanceof Expr) {
4128: $classResult = $this->processExprNode($stmt, $expr->getClass(), $scope, $nodeCallback, ExpressionContext::createDeep());
4129: $scope = $classResult->getScope();
4130: $hasYield = $classResult->hasYield();
4131: $throwPoints = $classResult->getThrowPoints();
4132: $impurePoints = $classResult->getImpurePoints();
4133: $isAlwaysTerminating = $classResult->isAlwaysTerminating();
4134: }
4135: if ($expr->getName() instanceof Expr) {
4136: $nameResult = $this->processExprNode($stmt, $expr->getName(), $scope, $nodeCallback, ExpressionContext::createDeep());
4137: $scope = $nameResult->getScope();
4138: $hasYield = $hasYield || $nameResult->hasYield();
4139: $throwPoints = array_merge($throwPoints, $nameResult->getThrowPoints());
4140: $impurePoints = array_merge($impurePoints, $nameResult->getImpurePoints());
4141: $isAlwaysTerminating = $isAlwaysTerminating || $nameResult->isAlwaysTerminating();
4142: }
4143: } elseif ($expr instanceof InstantiationCallableNode) {
4144: $throwPoints = [];
4145: $impurePoints = [];
4146: $hasYield = false;
4147: $isAlwaysTerminating = false;
4148: if ($expr->getClass() instanceof Expr) {
4149: $classResult = $this->processExprNode($stmt, $expr->getClass(), $scope, $nodeCallback, ExpressionContext::createDeep());
4150: $scope = $classResult->getScope();
4151: $hasYield = $classResult->hasYield();
4152: $throwPoints = $classResult->getThrowPoints();
4153: $impurePoints = $classResult->getImpurePoints();
4154: $isAlwaysTerminating = $classResult->isAlwaysTerminating();
4155: }
4156: } elseif ($expr instanceof Node\Scalar) {
4157: $hasYield = false;
4158: $throwPoints = [];
4159: $impurePoints = [];
4160: $isAlwaysTerminating = false;
4161: } elseif ($expr instanceof ConstFetch) {
4162: $hasYield = false;
4163: $throwPoints = [];
4164: $impurePoints = [];
4165: $isAlwaysTerminating = false;
4166: $nodeCallback($expr->name, $scope);
4167: } else {
4168: $hasYield = false;
4169: $throwPoints = [];
4170: $impurePoints = [];
4171: $isAlwaysTerminating = false;
4172: }
4173:
4174: return new ExpressionResult(
4175: $scope,
4176: $hasYield,
4177: $isAlwaysTerminating,
4178: $throwPoints,
4179: $impurePoints,
4180: static fn (): MutatingScope => $scope->filterByTruthyValue($expr),
4181: static fn (): MutatingScope => $scope->filterByFalseyValue($expr),
4182: );
4183: }
4184:
4185: private function getArrayFunctionAppendingType(FunctionReflection $functionReflection, Scope $scope, FuncCall $expr): Type
4186: {
4187: $arrayArg = $expr->getArgs()[0]->value;
4188: $arrayType = $scope->getType($arrayArg);
4189: $callArgs = array_slice($expr->getArgs(), 1);
4190:
4191: /**
4192: * @param Arg[] $callArgs
4193: * @param callable(?Type, Type, bool): void $setOffsetValueType
4194: */
4195: $setOffsetValueTypes = static function (Scope $scope, array $callArgs, callable $setOffsetValueType, ?bool &$nonConstantArrayWasUnpacked = null): void {
4196: foreach ($callArgs as $callArg) {
4197: $callArgType = $scope->getType($callArg->value);
4198: if ($callArg->unpack) {
4199: $constantArrays = $callArgType->getConstantArrays();
4200: if (count($constantArrays) === 1) {
4201: $iterableValueTypes = $constantArrays[0]->getValueTypes();
4202: } else {
4203: $iterableValueTypes = [$callArgType->getIterableValueType()];
4204: $nonConstantArrayWasUnpacked = true;
4205: }
4206:
4207: $isOptional = !$callArgType->isIterableAtLeastOnce()->yes();
4208: foreach ($iterableValueTypes as $iterableValueType) {
4209: if ($iterableValueType instanceof UnionType) {
4210: foreach ($iterableValueType->getTypes() as $innerType) {
4211: $setOffsetValueType(null, $innerType, $isOptional);
4212: }
4213: } else {
4214: $setOffsetValueType(null, $iterableValueType, $isOptional);
4215: }
4216: }
4217: continue;
4218: }
4219: $setOffsetValueType(null, $callArgType, false);
4220: }
4221: };
4222:
4223: $constantArrays = $arrayType->getConstantArrays();
4224: if (count($constantArrays) > 0) {
4225: $newArrayTypes = [];
4226: $prepend = $functionReflection->getName() === 'array_unshift';
4227: foreach ($constantArrays as $constantArray) {
4228: $arrayTypeBuilder = $prepend ? ConstantArrayTypeBuilder::createEmpty() : ConstantArrayTypeBuilder::createFromConstantArray($constantArray);
4229:
4230: $setOffsetValueTypes(
4231: $scope,
4232: $callArgs,
4233: static function (?Type $offsetType, Type $valueType, bool $optional) use (&$arrayTypeBuilder): void {
4234: $arrayTypeBuilder->setOffsetValueType($offsetType, $valueType, $optional);
4235: },
4236: $nonConstantArrayWasUnpacked,
4237: );
4238:
4239: if ($prepend) {
4240: $keyTypes = $constantArray->getKeyTypes();
4241: $valueTypes = $constantArray->getValueTypes();
4242: foreach ($keyTypes as $k => $keyType) {
4243: $arrayTypeBuilder->setOffsetValueType(
4244: count($keyType->getConstantStrings()) === 1 ? $keyType->getConstantStrings()[0] : null,
4245: $valueTypes[$k],
4246: $constantArray->isOptionalKey($k),
4247: );
4248: }
4249: }
4250:
4251: $constantArray = $arrayTypeBuilder->getArray();
4252:
4253: if ($constantArray->isConstantArray()->yes() && $nonConstantArrayWasUnpacked) {
4254: $array = new ArrayType($constantArray->generalize(GeneralizePrecision::lessSpecific())->getIterableKeyType(), $constantArray->getIterableValueType());
4255: $isList = $constantArray->isList()->yes();
4256: $constantArray = $constantArray->isIterableAtLeastOnce()->yes()
4257: ? TypeCombinator::intersect($array, new NonEmptyArrayType())
4258: : $array;
4259: $constantArray = $isList
4260: ? TypeCombinator::intersect($constantArray, new AccessoryArrayListType())
4261: : $constantArray;
4262: }
4263:
4264: $newArrayTypes[] = $constantArray;
4265: }
4266:
4267: return TypeCombinator::union(...$newArrayTypes);
4268: }
4269:
4270: $setOffsetValueTypes(
4271: $scope,
4272: $callArgs,
4273: static function (?Type $offsetType, Type $valueType, bool $optional) use (&$arrayType): void {
4274: $isIterableAtLeastOnce = $arrayType->isIterableAtLeastOnce()->yes() || !$optional;
4275: $arrayType = $arrayType->setOffsetValueType($offsetType, $valueType);
4276: if ($isIterableAtLeastOnce) {
4277: return;
4278: }
4279:
4280: $arrayType = TypeCombinator::union($arrayType, new ConstantArrayType([], []));
4281: },
4282: );
4283:
4284: return $arrayType;
4285: }
4286:
4287: private function getArraySortPreserveListFunctionType(Type $type): Type
4288: {
4289: $isIterableAtLeastOnce = $type->isIterableAtLeastOnce();
4290: if ($isIterableAtLeastOnce->no()) {
4291: return $type;
4292: }
4293:
4294: return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($isIterableAtLeastOnce): Type {
4295: if ($type instanceof UnionType || $type instanceof IntersectionType) {
4296: return $traverse($type);
4297: }
4298:
4299: if (!$type instanceof ArrayType && !$type instanceof ConstantArrayType) {
4300: return $type;
4301: }
4302:
4303: $newArrayType = TypeCombinator::intersect(new ArrayType(new IntegerType(), $type->getIterableValueType()), new AccessoryArrayListType());
4304: if ($isIterableAtLeastOnce->yes()) {
4305: $newArrayType = TypeCombinator::intersect($newArrayType, new NonEmptyArrayType());
4306: }
4307:
4308: return $newArrayType;
4309: });
4310: }
4311:
4312: private function getArraySortDoNotPreserveListFunctionType(Type $type): Type
4313: {
4314: $isIterableAtLeastOnce = $type->isIterableAtLeastOnce();
4315: if ($isIterableAtLeastOnce->no()) {
4316: return $type;
4317: }
4318:
4319: return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($isIterableAtLeastOnce): Type {
4320: if ($type instanceof UnionType) {
4321: return $traverse($type);
4322: }
4323:
4324: $constantArrays = $type->getConstantArrays();
4325: if (count($constantArrays) > 0) {
4326: $types = [];
4327: foreach ($constantArrays as $constantArray) {
4328: $types[] = new ConstantArrayType(
4329: $constantArray->getKeyTypes(),
4330: $constantArray->getValueTypes(),
4331: $constantArray->getNextAutoIndexes(),
4332: $constantArray->getOptionalKeys(),
4333: $constantArray->isList()->and(TrinaryLogic::createMaybe()),
4334: );
4335: }
4336:
4337: return TypeCombinator::union(...$types);
4338: }
4339:
4340: $newArrayType = new ArrayType($type->getIterableKeyType(), $type->getIterableValueType());
4341: if ($isIterableAtLeastOnce->yes()) {
4342: $newArrayType = TypeCombinator::intersect($newArrayType, new NonEmptyArrayType());
4343: }
4344:
4345: return $newArrayType;
4346: });
4347: }
4348:
4349: private function getFunctionThrowPoint(
4350: FunctionReflection $functionReflection,
4351: ?ParametersAcceptor $parametersAcceptor,
4352: FuncCall $funcCall,
4353: MutatingScope $scope,
4354: ): ?ThrowPoint
4355: {
4356: $normalizedFuncCall = $funcCall;
4357: if ($parametersAcceptor !== null) {
4358: $normalizedFuncCall = ArgumentsNormalizer::reorderFuncArguments($parametersAcceptor, $funcCall);
4359: }
4360:
4361: if ($normalizedFuncCall !== null) {
4362: foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicFunctionThrowTypeExtensions() as $extension) {
4363: if (!$extension->isFunctionSupported($functionReflection)) {
4364: continue;
4365: }
4366:
4367: $throwType = $extension->getThrowTypeFromFunctionCall($functionReflection, $normalizedFuncCall, $scope);
4368: if ($throwType === null) {
4369: return null;
4370: }
4371:
4372: return ThrowPoint::createExplicit($scope, $throwType, $funcCall, false);
4373: }
4374: }
4375:
4376: $throwType = $functionReflection->getThrowType();
4377: if ($throwType === null && $parametersAcceptor !== null) {
4378: $returnType = $parametersAcceptor->getReturnType();
4379: if ($returnType instanceof NeverType && $returnType->isExplicit()) {
4380: $throwType = new ObjectType(Throwable::class);
4381: }
4382: }
4383:
4384: if ($throwType !== null) {
4385: if (!$throwType->isVoid()->yes()) {
4386: return ThrowPoint::createExplicit($scope, $throwType, $funcCall, true);
4387: }
4388: } elseif ($this->implicitThrows) {
4389: $requiredParameters = null;
4390: if ($parametersAcceptor !== null) {
4391: $requiredParameters = 0;
4392: foreach ($parametersAcceptor->getParameters() as $parameter) {
4393: if ($parameter->isOptional()) {
4394: continue;
4395: }
4396:
4397: $requiredParameters++;
4398: }
4399: }
4400: if (
4401: !$functionReflection->isBuiltin()
4402: || $requiredParameters === null
4403: || $requiredParameters > 0
4404: || count($funcCall->getArgs()) > 0
4405: ) {
4406: $functionReturnedType = $scope->getType($funcCall);
4407: if (!(new ObjectType(Throwable::class))->isSuperTypeOf($functionReturnedType)->yes()) {
4408: return ThrowPoint::createImplicit($scope, $funcCall);
4409: }
4410: }
4411: }
4412:
4413: return null;
4414: }
4415:
4416: private function getMethodThrowPoint(MethodReflection $methodReflection, ParametersAcceptor $parametersAcceptor, MethodCall $methodCall, MutatingScope $scope): ?ThrowPoint
4417: {
4418: $normalizedMethodCall = ArgumentsNormalizer::reorderMethodArguments($parametersAcceptor, $methodCall);
4419: if ($normalizedMethodCall !== null) {
4420: foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicMethodThrowTypeExtensions() as $extension) {
4421: if (!$extension->isMethodSupported($methodReflection)) {
4422: continue;
4423: }
4424:
4425: $throwType = $extension->getThrowTypeFromMethodCall($methodReflection, $normalizedMethodCall, $scope);
4426: if ($throwType === null) {
4427: return null;
4428: }
4429:
4430: return ThrowPoint::createExplicit($scope, $throwType, $methodCall, false);
4431: }
4432: }
4433:
4434: $throwType = $methodReflection->getThrowType();
4435: if ($throwType === null) {
4436: $returnType = $parametersAcceptor->getReturnType();
4437: if ($returnType instanceof NeverType && $returnType->isExplicit()) {
4438: $throwType = new ObjectType(Throwable::class);
4439: }
4440: }
4441:
4442: if ($throwType !== null) {
4443: if (!$throwType->isVoid()->yes()) {
4444: return ThrowPoint::createExplicit($scope, $throwType, $methodCall, true);
4445: }
4446: } elseif ($this->implicitThrows) {
4447: $methodReturnedType = $scope->getType($methodCall);
4448: if (!(new ObjectType(Throwable::class))->isSuperTypeOf($methodReturnedType)->yes()) {
4449: return ThrowPoint::createImplicit($scope, $methodCall);
4450: }
4451: }
4452:
4453: return null;
4454: }
4455:
4456: /**
4457: * @param Node\Arg[] $args
4458: */
4459: private function getConstructorThrowPoint(MethodReflection $constructorReflection, ParametersAcceptor $parametersAcceptor, ClassReflection $classReflection, New_ $new, Name $className, array $args, MutatingScope $scope): ?ThrowPoint
4460: {
4461: $methodCall = new StaticCall($className, $constructorReflection->getName(), $args);
4462: $normalizedMethodCall = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $methodCall);
4463: if ($normalizedMethodCall !== null) {
4464: foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicStaticMethodThrowTypeExtensions() as $extension) {
4465: if (!$extension->isStaticMethodSupported($constructorReflection)) {
4466: continue;
4467: }
4468:
4469: $throwType = $extension->getThrowTypeFromStaticMethodCall($constructorReflection, $normalizedMethodCall, $scope);
4470: if ($throwType === null) {
4471: return null;
4472: }
4473:
4474: return ThrowPoint::createExplicit($scope, $throwType, $new, false);
4475: }
4476: }
4477:
4478: if ($constructorReflection->getThrowType() !== null) {
4479: $throwType = $constructorReflection->getThrowType();
4480: if (!$throwType->isVoid()->yes()) {
4481: return ThrowPoint::createExplicit($scope, $throwType, $new, true);
4482: }
4483: } elseif ($this->implicitThrows) {
4484: if (!$classReflection->is(Throwable::class)) {
4485: return ThrowPoint::createImplicit($scope, $methodCall);
4486: }
4487: }
4488:
4489: return null;
4490: }
4491:
4492: private function getStaticMethodThrowPoint(MethodReflection $methodReflection, ParametersAcceptor $parametersAcceptor, StaticCall $methodCall, MutatingScope $scope): ?ThrowPoint
4493: {
4494: $normalizedMethodCall = ArgumentsNormalizer::reorderStaticCallArguments($parametersAcceptor, $methodCall);
4495: if ($normalizedMethodCall !== null) {
4496: foreach ($this->dynamicThrowTypeExtensionProvider->getDynamicStaticMethodThrowTypeExtensions() as $extension) {
4497: if (!$extension->isStaticMethodSupported($methodReflection)) {
4498: continue;
4499: }
4500:
4501: $throwType = $extension->getThrowTypeFromStaticMethodCall($methodReflection, $normalizedMethodCall, $scope);
4502: if ($throwType === null) {
4503: return null;
4504: }
4505:
4506: return ThrowPoint::createExplicit($scope, $throwType, $methodCall, false);
4507: }
4508: }
4509:
4510: if ($methodReflection->getThrowType() !== null) {
4511: $throwType = $methodReflection->getThrowType();
4512: if (!$throwType->isVoid()->yes()) {
4513: return ThrowPoint::createExplicit($scope, $throwType, $methodCall, true);
4514: }
4515: } elseif ($this->implicitThrows) {
4516: $methodReturnedType = $scope->getType($methodCall);
4517: if (!(new ObjectType(Throwable::class))->isSuperTypeOf($methodReturnedType)->yes()) {
4518: return ThrowPoint::createImplicit($scope, $methodCall);
4519: }
4520: }
4521:
4522: return null;
4523: }
4524:
4525: /**
4526: * @return ThrowPoint[]
4527: */
4528: private function getPropertyReadThrowPointsFromGetHook(
4529: MutatingScope $scope,
4530: PropertyFetch $propertyFetch,
4531: PhpPropertyReflection $propertyReflection,
4532: ): array
4533: {
4534: return $this->getThrowPointsFromPropertyHook($scope, $propertyFetch, $propertyReflection, 'get');
4535: }
4536:
4537: /**
4538: * @return ThrowPoint[]
4539: */
4540: private function getPropertyAssignThrowPointsFromSetHook(
4541: MutatingScope $scope,
4542: PropertyFetch $propertyFetch,
4543: PhpPropertyReflection $propertyReflection,
4544: ): array
4545: {
4546: return $this->getThrowPointsFromPropertyHook($scope, $propertyFetch, $propertyReflection, 'set');
4547: }
4548:
4549: /**
4550: * @param 'get'|'set' $hookName
4551: * @return ThrowPoint[]
4552: */
4553: private function getThrowPointsFromPropertyHook(
4554: MutatingScope $scope,
4555: PropertyFetch $propertyFetch,
4556: PhpPropertyReflection $propertyReflection,
4557: string $hookName,
4558: ): array
4559: {
4560: $scopeFunction = $scope->getFunction();
4561: if (
4562: $scopeFunction instanceof PhpMethodFromParserNodeReflection
4563: && $scopeFunction->isPropertyHook()
4564: && $propertyFetch->var instanceof Variable
4565: && $propertyFetch->var->name === 'this'
4566: && $propertyFetch->name instanceof Identifier
4567: && $propertyFetch->name->toString() === $scopeFunction->getHookedPropertyName()
4568: ) {
4569: return [];
4570: }
4571: $declaringClass = $propertyReflection->getDeclaringClass();
4572: if (!$propertyReflection->hasHook($hookName)) {
4573: if (
4574: $propertyReflection->isPrivate()
4575: || $propertyReflection->isFinal()->yes()
4576: || $declaringClass->isFinal()
4577: ) {
4578: return [];
4579: }
4580:
4581: if ($this->implicitThrows) {
4582: return [ThrowPoint::createImplicit($scope, $propertyFetch)];
4583: }
4584:
4585: return [];
4586: }
4587:
4588: $getHook = $propertyReflection->getHook($hookName);
4589: $throwType = $getHook->getThrowType();
4590:
4591: if ($throwType !== null) {
4592: if (!$throwType->isVoid()->yes()) {
4593: return [ThrowPoint::createExplicit($scope, $throwType, $propertyFetch, true)];
4594: }
4595: } elseif ($this->implicitThrows) {
4596: return [ThrowPoint::createImplicit($scope, $propertyFetch)];
4597: }
4598:
4599: return [];
4600: }
4601:
4602: /**
4603: * @return string[]
4604: */
4605: private function getAssignedVariables(Expr $expr): array
4606: {
4607: if ($expr instanceof Expr\Variable) {
4608: if (is_string($expr->name)) {
4609: return [$expr->name];
4610: }
4611:
4612: return [];
4613: }
4614:
4615: if ($expr instanceof Expr\List_) {
4616: $names = [];
4617: foreach ($expr->items as $item) {
4618: if ($item === null) {
4619: continue;
4620: }
4621:
4622: $names = array_merge($names, $this->getAssignedVariables($item->value));
4623: }
4624:
4625: return $names;
4626: }
4627:
4628: if ($expr instanceof ArrayDimFetch) {
4629: return $this->getAssignedVariables($expr->var);
4630: }
4631:
4632: return [];
4633: }
4634:
4635: /**
4636: * @param callable(Node $node, Scope $scope): void $nodeCallback
4637: */
4638: private function callNodeCallbackWithExpression(
4639: callable $nodeCallback,
4640: Expr $expr,
4641: MutatingScope $scope,
4642: ExpressionContext $context,
4643: ): void
4644: {
4645: if ($context->isDeep()) {
4646: $scope = $scope->exitFirstLevelStatements();
4647: }
4648: $nodeCallback($expr, $scope);
4649: }
4650:
4651: /**
4652: * @param callable(Node $node, Scope $scope): void $nodeCallback
4653: */
4654: private function processClosureNode(
4655: Node\Stmt $stmt,
4656: Expr\Closure $expr,
4657: MutatingScope $scope,
4658: callable $nodeCallback,
4659: ExpressionContext $context,
4660: ?Type $passedToType,
4661: ): ProcessClosureResult
4662: {
4663: foreach ($expr->params as $param) {
4664: $this->processParamNode($stmt, $param, $scope, $nodeCallback);
4665: }
4666:
4667: $byRefUses = [];
4668:
4669: $closureCallArgs = $expr->getAttribute(ClosureArgVisitor::ATTRIBUTE_NAME);
4670: $callableParameters = $this->createCallableParameters(
4671: $scope,
4672: $expr,
4673: $closureCallArgs,
4674: $passedToType,
4675: );
4676:
4677: $useScope = $scope;
4678: foreach ($expr->uses as $use) {
4679: if ($use->byRef) {
4680: $byRefUses[] = $use;
4681: $useScope = $useScope->enterExpressionAssign($use->var);
4682:
4683: $inAssignRightSideVariableName = $context->getInAssignRightSideVariableName();
4684: $inAssignRightSideType = $context->getInAssignRightSideType();
4685: $inAssignRightSideNativeType = $context->getInAssignRightSideNativeType();
4686: if (
4687: $inAssignRightSideVariableName === $use->var->name
4688: && $inAssignRightSideType !== null
4689: && $inAssignRightSideNativeType !== null
4690: ) {
4691: if ($inAssignRightSideType instanceof ClosureType) {
4692: $variableType = $inAssignRightSideType;
4693: } else {
4694: $alreadyHasVariableType = $scope->hasVariableType($inAssignRightSideVariableName);
4695: if ($alreadyHasVariableType->no()) {
4696: $variableType = TypeCombinator::union(new NullType(), $inAssignRightSideType);
4697: } else {
4698: $variableType = TypeCombinator::union($scope->getVariableType($inAssignRightSideVariableName), $inAssignRightSideType);
4699: }
4700: }
4701: if ($inAssignRightSideNativeType instanceof ClosureType) {
4702: $variableNativeType = $inAssignRightSideNativeType;
4703: } else {
4704: $alreadyHasVariableType = $scope->hasVariableType($inAssignRightSideVariableName);
4705: if ($alreadyHasVariableType->no()) {
4706: $variableNativeType = TypeCombinator::union(new NullType(), $inAssignRightSideNativeType);
4707: } else {
4708: $variableNativeType = TypeCombinator::union($scope->getVariableType($inAssignRightSideVariableName), $inAssignRightSideNativeType);
4709: }
4710: }
4711: $scope = $scope->assignVariable($inAssignRightSideVariableName, $variableType, $variableNativeType, TrinaryLogic::createYes());
4712: }
4713: }
4714: $this->processExprNode($stmt, $use->var, $useScope, $nodeCallback, $context);
4715: if (!$use->byRef) {
4716: continue;
4717: }
4718:
4719: $useScope = $useScope->exitExpressionAssign($use->var);
4720: }
4721:
4722: if ($expr->returnType !== null) {
4723: $nodeCallback($expr->returnType, $scope);
4724: }
4725:
4726: $closureScope = $scope->enterAnonymousFunction($expr, $callableParameters);
4727: $closureScope = $closureScope->processClosureScope($scope, null, $byRefUses);
4728: $closureType = $closureScope->getAnonymousFunctionReflection();
4729: if (!$closureType instanceof ClosureType) {
4730: throw new ShouldNotHappenException();
4731: }
4732:
4733: $returnType = $closureType->getReturnType();
4734: $isAlwaysTerminating = ($returnType instanceof NeverType && $returnType->isExplicit());
4735:
4736: $nodeCallback(new InClosureNode($closureType, $expr), $closureScope);
4737:
4738: $executionEnds = [];
4739: $gatheredReturnStatements = [];
4740: $gatheredYieldStatements = [];
4741: $closureImpurePoints = [];
4742: $invalidateExpressions = [];
4743: $closureStmtsCallback = static function (Node $node, Scope $scope) use ($nodeCallback, &$executionEnds, &$gatheredReturnStatements, &$gatheredYieldStatements, &$closureScope, &$closureImpurePoints, &$invalidateExpressions): void {
4744: $nodeCallback($node, $scope);
4745: if ($scope->getAnonymousFunctionReflection() !== $closureScope->getAnonymousFunctionReflection()) {
4746: return;
4747: }
4748: if ($node instanceof PropertyAssignNode) {
4749: $closureImpurePoints[] = new ImpurePoint(
4750: $scope,
4751: $node,
4752: 'propertyAssign',
4753: 'property assignment',
4754: true,
4755: );
4756: return;
4757: }
4758: if ($node instanceof ExecutionEndNode) {
4759: $executionEnds[] = $node;
4760: return;
4761: }
4762: if ($node instanceof InvalidateExprNode) {
4763: $invalidateExpressions[] = $node;
4764: return;
4765: }
4766: if ($node instanceof Expr\Yield_ || $node instanceof Expr\YieldFrom) {
4767: $gatheredYieldStatements[] = $node;
4768: }
4769: if (!$node instanceof Return_) {
4770: return;
4771: }
4772:
4773: $gatheredReturnStatements[] = new ReturnStatement($scope, $node);
4774: };
4775:
4776: if (count($byRefUses) === 0) {
4777: $statementResult = $this->processStmtNodes($expr, $expr->stmts, $closureScope, $closureStmtsCallback, StatementContext::createTopLevel());
4778: $nodeCallback(new ClosureReturnStatementsNode(
4779: $expr,
4780: $gatheredReturnStatements,
4781: $gatheredYieldStatements,
4782: $statementResult,
4783: $executionEnds,
4784: array_merge($statementResult->getImpurePoints(), $closureImpurePoints),
4785: ), $closureScope);
4786:
4787: return new ProcessClosureResult($scope, $statementResult->getThrowPoints(), $statementResult->getImpurePoints(), $invalidateExpressions, $isAlwaysTerminating);
4788: }
4789:
4790: $count = 0;
4791: $closureResultScope = null;
4792: do {
4793: $prevScope = $closureScope;
4794:
4795: $intermediaryClosureScopeResult = $this->processStmtNodes($expr, $expr->stmts, $closureScope, static function (): void {
4796: }, StatementContext::createTopLevel());
4797: $intermediaryClosureScope = $intermediaryClosureScopeResult->getScope();
4798: foreach ($intermediaryClosureScopeResult->getExitPoints() as $exitPoint) {
4799: $intermediaryClosureScope = $intermediaryClosureScope->mergeWith($exitPoint->getScope());
4800: }
4801:
4802: if ($expr->getAttribute(ImmediatelyInvokedClosureVisitor::ATTRIBUTE_NAME) === true) {
4803: $closureResultScope = $intermediaryClosureScope;
4804: break;
4805: }
4806:
4807: $closureScope = $scope->enterAnonymousFunction($expr, $callableParameters);
4808: $closureScope = $closureScope->processClosureScope($intermediaryClosureScope, $prevScope, $byRefUses);
4809:
4810: if ($closureScope->equals($prevScope)) {
4811: break;
4812: }
4813: if ($count >= self::GENERALIZE_AFTER_ITERATION) {
4814: $closureScope = $prevScope->generalizeWith($closureScope);
4815: }
4816: $count++;
4817: } while ($count < self::LOOP_SCOPE_ITERATIONS);
4818:
4819: if ($closureResultScope === null) {
4820: $closureResultScope = $closureScope;
4821: }
4822:
4823: $statementResult = $this->processStmtNodes($expr, $expr->stmts, $closureScope, $closureStmtsCallback, StatementContext::createTopLevel());
4824: $nodeCallback(new ClosureReturnStatementsNode(
4825: $expr,
4826: $gatheredReturnStatements,
4827: $gatheredYieldStatements,
4828: $statementResult,
4829: $executionEnds,
4830: array_merge($statementResult->getImpurePoints(), $closureImpurePoints),
4831: ), $closureScope);
4832:
4833: return new ProcessClosureResult($scope->processClosureScope($closureResultScope, null, $byRefUses), $statementResult->getThrowPoints(), $statementResult->getImpurePoints(), $invalidateExpressions, $isAlwaysTerminating);
4834: }
4835:
4836: /**
4837: * @param InvalidateExprNode[] $invalidatedExpressions
4838: * @param string[] $uses
4839: */
4840: private function processImmediatelyCalledCallable(MutatingScope $scope, array $invalidatedExpressions, array $uses): MutatingScope
4841: {
4842: if ($scope->isInClass()) {
4843: $uses[] = 'this';
4844: }
4845:
4846: $finder = new NodeFinder();
4847: foreach ($invalidatedExpressions as $invalidateExpression) {
4848: $found = false;
4849: foreach ($uses as $use) {
4850: $result = $finder->findFirst([$invalidateExpression->getExpr()], static fn ($node) => $node instanceof Variable && $node->name === $use);
4851: if ($result === null) {
4852: continue;
4853: }
4854:
4855: $found = true;
4856: break;
4857: }
4858:
4859: if (!$found) {
4860: continue;
4861: }
4862:
4863: $scope = $scope->invalidateExpression($invalidateExpression->getExpr(), true);
4864: }
4865:
4866: return $scope;
4867: }
4868:
4869: /**
4870: * @param callable(Node $node, Scope $scope): void $nodeCallback
4871: */
4872: private function processArrowFunctionNode(
4873: Node\Stmt $stmt,
4874: Expr\ArrowFunction $expr,
4875: MutatingScope $scope,
4876: callable $nodeCallback,
4877: ?Type $passedToType,
4878: ): ExpressionResult
4879: {
4880: foreach ($expr->params as $param) {
4881: $this->processParamNode($stmt, $param, $scope, $nodeCallback);
4882: }
4883: if ($expr->returnType !== null) {
4884: $nodeCallback($expr->returnType, $scope);
4885: }
4886:
4887: $arrowFunctionCallArgs = $expr->getAttribute(ArrowFunctionArgVisitor::ATTRIBUTE_NAME);
4888: $arrowFunctionScope = $scope->enterArrowFunction($expr, $this->createCallableParameters(
4889: $scope,
4890: $expr,
4891: $arrowFunctionCallArgs,
4892: $passedToType,
4893: ));
4894: $arrowFunctionType = $arrowFunctionScope->getAnonymousFunctionReflection();
4895: if (!$arrowFunctionType instanceof ClosureType) {
4896: throw new ShouldNotHappenException();
4897: }
4898: $nodeCallback(new InArrowFunctionNode($arrowFunctionType, $expr), $arrowFunctionScope);
4899: $exprResult = $this->processExprNode($stmt, $expr->expr, $arrowFunctionScope, $nodeCallback, ExpressionContext::createTopLevel());
4900:
4901: return new ExpressionResult($scope, false, $exprResult->isAlwaysTerminating(), $exprResult->getThrowPoints(), $exprResult->getImpurePoints());
4902: }
4903:
4904: /**
4905: * @param Node\Arg[] $args
4906: * @return ParameterReflection[]|null
4907: */
4908: public function createCallableParameters(Scope $scope, Expr $closureExpr, ?array $args, ?Type $passedToType): ?array
4909: {
4910: $callableParameters = null;
4911: if ($args !== null) {
4912: $closureType = $scope->getType($closureExpr);
4913:
4914: if ($closureType->isCallable()->no()) {
4915: return null;
4916: }
4917:
4918: $acceptors = $closureType->getCallableParametersAcceptors($scope);
4919: if (count($acceptors) === 1) {
4920: $callableParameters = $acceptors[0]->getParameters();
4921:
4922: foreach ($callableParameters as $index => $callableParameter) {
4923: if (!isset($args[$index])) {
4924: continue;
4925: }
4926:
4927: $type = $scope->getType($args[$index]->value);
4928: $callableParameters[$index] = new NativeParameterReflection(
4929: $callableParameter->getName(),
4930: $callableParameter->isOptional(),
4931: $type,
4932: $callableParameter->passedByReference(),
4933: $callableParameter->isVariadic(),
4934: $callableParameter->getDefaultValue(),
4935: );
4936: }
4937: }
4938: } elseif ($passedToType !== null && !$passedToType->isCallable()->no()) {
4939: if ($passedToType instanceof UnionType) {
4940: $passedToType = TypeCombinator::union(...array_filter(
4941: $passedToType->getTypes(),
4942: static fn (Type $type) => $type->isCallable()->yes(),
4943: ));
4944:
4945: if ($passedToType->isCallable()->no()) {
4946: return null;
4947: }
4948: }
4949:
4950: $acceptors = $passedToType->getCallableParametersAcceptors($scope);
4951: if (count($acceptors) > 0) {
4952: foreach ($acceptors as $acceptor) {
4953: if ($callableParameters === null) {
4954: $callableParameters = array_map(static fn (ParameterReflection $callableParameter) => new NativeParameterReflection(
4955: $callableParameter->getName(),
4956: $callableParameter->isOptional(),
4957: $callableParameter->getType(),
4958: $callableParameter->passedByReference(),
4959: $callableParameter->isVariadic(),
4960: $callableParameter->getDefaultValue(),
4961: ), $acceptor->getParameters());
4962: continue;
4963: }
4964:
4965: $newParameters = [];
4966: foreach ($acceptor->getParameters() as $i => $callableParameter) {
4967: if (!array_key_exists($i, $callableParameters)) {
4968: $newParameters[] = $callableParameter;
4969: continue;
4970: }
4971:
4972: $newParameters[] = $callableParameters[$i]->union(new NativeParameterReflection(
4973: $callableParameter->getName(),
4974: $callableParameter->isOptional(),
4975: $callableParameter->getType(),
4976: $callableParameter->passedByReference(),
4977: $callableParameter->isVariadic(),
4978: $callableParameter->getDefaultValue(),
4979: ));
4980: }
4981:
4982: $callableParameters = $newParameters;
4983: }
4984: }
4985: }
4986:
4987: return $callableParameters;
4988: }
4989:
4990: /**
4991: * @param callable(Node $node, Scope $scope): void $nodeCallback
4992: */
4993: private function processParamNode(
4994: Node\Stmt $stmt,
4995: Node\Param $param,
4996: MutatingScope $scope,
4997: callable $nodeCallback,
4998: ): void
4999: {
5000: $this->processAttributeGroups($stmt, $param->attrGroups, $scope, $nodeCallback);
5001: $nodeCallback($param, $scope);
5002: if ($param->type !== null) {
5003: $nodeCallback($param->type, $scope);
5004: }
5005: if ($param->default === null) {
5006: return;
5007: }
5008:
5009: $this->processExprNode($stmt, $param->default, $scope, $nodeCallback, ExpressionContext::createDeep());
5010: }
5011:
5012: /**
5013: * @param AttributeGroup[] $attrGroups
5014: * @param callable(Node $node, Scope $scope): void $nodeCallback
5015: */
5016: private function processAttributeGroups(
5017: Node\Stmt $stmt,
5018: array $attrGroups,
5019: MutatingScope $scope,
5020: callable $nodeCallback,
5021: ): void
5022: {
5023: foreach ($attrGroups as $attrGroup) {
5024: foreach ($attrGroup->attrs as $attr) {
5025: foreach ($attr->args as $arg) {
5026: $this->processExprNode($stmt, $arg->value, $scope, $nodeCallback, ExpressionContext::createDeep());
5027: $nodeCallback($arg, $scope);
5028: }
5029: $nodeCallback($attr, $scope);
5030: }
5031: $nodeCallback($attrGroup, $scope);
5032: }
5033: }
5034:
5035: /**
5036: * @param Node\PropertyHook[] $hooks
5037: * @param callable(Node $node, Scope $scope): void $nodeCallback
5038: */
5039: private function processPropertyHooks(
5040: Node\Stmt $stmt,
5041: Identifier|Name|ComplexType|null $nativeTypeNode,
5042: ?Type $phpDocType,
5043: string $propertyName,
5044: array $hooks,
5045: MutatingScope $scope,
5046: callable $nodeCallback,
5047: ): void
5048: {
5049: if (!$scope->isInClass()) {
5050: throw new ShouldNotHappenException();
5051: }
5052:
5053: $classReflection = $scope->getClassReflection();
5054:
5055: foreach ($hooks as $hook) {
5056: $nodeCallback($hook, $scope);
5057: $this->processAttributeGroups($stmt, $hook->attrGroups, $scope, $nodeCallback);
5058:
5059: [, $phpDocParameterTypes,,,, $phpDocThrowType,,,,,,,, $phpDocComment] = $this->getPhpDocs($scope, $hook);
5060:
5061: foreach ($hook->params as $param) {
5062: $this->processParamNode($stmt, $param, $scope, $nodeCallback);
5063: }
5064:
5065: [$isDeprecated, $deprecatedDescription] = $this->getDeprecatedAttribute($scope, $hook);
5066:
5067: $hookScope = $scope->enterPropertyHook(
5068: $hook,
5069: $propertyName,
5070: $nativeTypeNode,
5071: $phpDocType,
5072: $phpDocParameterTypes,
5073: $phpDocThrowType,
5074: $deprecatedDescription,
5075: $isDeprecated,
5076: $phpDocComment,
5077: );
5078: $hookReflection = $hookScope->getFunction();
5079: if (!$hookReflection instanceof PhpMethodFromParserNodeReflection) {
5080: throw new ShouldNotHappenException();
5081: }
5082:
5083: if (!$classReflection->hasNativeProperty($propertyName)) {
5084: throw new ShouldNotHappenException();
5085: }
5086:
5087: $propertyReflection = $classReflection->getNativeProperty($propertyName);
5088:
5089: $nodeCallback(new InPropertyHookNode(
5090: $classReflection,
5091: $hookReflection,
5092: $propertyReflection,
5093: $hook,
5094: ), $hookScope);
5095:
5096: $stmts = $hook->getStmts();
5097: if ($stmts === null) {
5098: return;
5099: }
5100:
5101: if ($hook->body instanceof Expr) {
5102: // enrich attributes of nodes in short hook body statements
5103: $traverser = new NodeTraverser(
5104: new LineAttributesVisitor($hook->body->getStartLine(), $hook->body->getEndLine()),
5105: );
5106: $traverser->traverse($stmts);
5107: }
5108:
5109: $gatheredReturnStatements = [];
5110: $executionEnds = [];
5111: $methodImpurePoints = [];
5112: $statementResult = $this->processStmtNodes(new PropertyHookStatementNode($hook), $stmts, $hookScope, static function (Node $node, Scope $scope) use ($nodeCallback, $hookScope, &$gatheredReturnStatements, &$executionEnds, &$hookImpurePoints): void {
5113: $nodeCallback($node, $scope);
5114: if ($scope->getFunction() !== $hookScope->getFunction()) {
5115: return;
5116: }
5117: if ($scope->isInAnonymousFunction()) {
5118: return;
5119: }
5120: if ($node instanceof PropertyAssignNode) {
5121: $hookImpurePoints[] = new ImpurePoint(
5122: $scope,
5123: $node,
5124: 'propertyAssign',
5125: 'property assignment',
5126: true,
5127: );
5128: return;
5129: }
5130: if ($node instanceof ExecutionEndNode) {
5131: $executionEnds[] = $node;
5132: return;
5133: }
5134: if (!$node instanceof Return_) {
5135: return;
5136: }
5137:
5138: $gatheredReturnStatements[] = new ReturnStatement($scope, $node);
5139: }, StatementContext::createTopLevel());
5140:
5141: $nodeCallback(new PropertyHookReturnStatementsNode(
5142: $hook,
5143: $gatheredReturnStatements,
5144: $statementResult,
5145: $executionEnds,
5146: array_merge($statementResult->getImpurePoints(), $methodImpurePoints),
5147: $classReflection,
5148: $hookReflection,
5149: $propertyReflection,
5150: ), $hookScope);
5151: }
5152: }
5153:
5154: /**
5155: * @param FunctionReflection|MethodReflection|null $calleeReflection
5156: */
5157: public function resolveClosureThisType(
5158: ?CallLike $call,
5159: $calleeReflection,
5160: ParameterReflection $parameter,
5161: MutatingScope $scope,
5162: ): ?Type
5163: {
5164: if ($call instanceof FuncCall && $calleeReflection instanceof FunctionReflection) {
5165: foreach ($this->parameterClosureThisExtensionProvider->getFunctionParameterClosureThisExtensions() as $extension) {
5166: if (! $extension->isFunctionSupported($calleeReflection, $parameter)) {
5167: continue;
5168: }
5169: $type = $extension->getClosureThisTypeFromFunctionCall($calleeReflection, $call, $parameter, $scope);
5170: if ($type !== null) {
5171: return $type;
5172: }
5173: }
5174: } elseif ($call instanceof StaticCall && $calleeReflection instanceof MethodReflection) {
5175: foreach ($this->parameterClosureThisExtensionProvider->getStaticMethodParameterClosureThisExtensions() as $extension) {
5176: if (! $extension->isStaticMethodSupported($calleeReflection, $parameter)) {
5177: continue;
5178: }
5179: $type = $extension->getClosureThisTypeFromStaticMethodCall($calleeReflection, $call, $parameter, $scope);
5180: if ($type !== null) {
5181: return $type;
5182: }
5183: }
5184: } elseif ($call instanceof MethodCall && $calleeReflection instanceof MethodReflection) {
5185: foreach ($this->parameterClosureThisExtensionProvider->getMethodParameterClosureThisExtensions() as $extension) {
5186: if (! $extension->isMethodSupported($calleeReflection, $parameter)) {
5187: continue;
5188: }
5189: $type = $extension->getClosureThisTypeFromMethodCall($calleeReflection, $call, $parameter, $scope);
5190: if ($type !== null) {
5191: return $type;
5192: }
5193: }
5194: }
5195:
5196: if ($parameter instanceof ExtendedParameterReflection) {
5197: return $parameter->getClosureThisType();
5198: }
5199:
5200: return null;
5201: }
5202:
5203: /**
5204: * @param MethodReflection|FunctionReflection|null $calleeReflection
5205: * @param callable(Node $node, Scope $scope): void $nodeCallback
5206: */
5207: private function processArgs(
5208: Node\Stmt $stmt,
5209: $calleeReflection,
5210: ?ExtendedMethodReflection $nakedMethodReflection,
5211: ?ParametersAcceptor $parametersAcceptor,
5212: CallLike $callLike,
5213: MutatingScope $scope,
5214: callable $nodeCallback,
5215: ExpressionContext $context,
5216: ?MutatingScope $closureBindScope = null,
5217: ): ExpressionResult
5218: {
5219: $args = $callLike->getArgs();
5220:
5221: if ($parametersAcceptor !== null) {
5222: $parameters = $parametersAcceptor->getParameters();
5223: }
5224:
5225: $hasYield = false;
5226: $throwPoints = [];
5227: $impurePoints = [];
5228: $isAlwaysTerminating = false;
5229: foreach ($args as $i => $arg) {
5230: $assignByReference = false;
5231: $parameter = null;
5232: $parameterType = null;
5233: $parameterNativeType = null;
5234: if (isset($parameters) && $parametersAcceptor !== null) {
5235: if (isset($parameters[$i])) {
5236: $assignByReference = $parameters[$i]->passedByReference()->createsNewVariable();
5237: $parameterType = $parameters[$i]->getType();
5238:
5239: if ($parameters[$i] instanceof ExtendedParameterReflection) {
5240: $parameterNativeType = $parameters[$i]->getNativeType();
5241: }
5242: $parameter = $parameters[$i];
5243: } elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
5244: $lastParameter = $parameters[count($parameters) - 1];
5245: $assignByReference = $lastParameter->passedByReference()->createsNewVariable();
5246: $parameterType = $lastParameter->getType();
5247:
5248: if ($lastParameter instanceof ExtendedParameterReflection) {
5249: $parameterNativeType = $lastParameter->getNativeType();
5250: }
5251: $parameter = $lastParameter;
5252: }
5253: }
5254:
5255: $lookForUnset = false;
5256: if ($assignByReference) {
5257: $isBuiltin = false;
5258: if ($calleeReflection instanceof FunctionReflection && $calleeReflection->isBuiltin()) {
5259: $isBuiltin = true;
5260: } elseif ($calleeReflection instanceof ExtendedMethodReflection && $calleeReflection->getDeclaringClass()->isBuiltin()) {
5261: $isBuiltin = true;
5262: }
5263: if (
5264: $isBuiltin
5265: || ($parameterNativeType === null || !$parameterNativeType->isNull()->no())
5266: ) {
5267: $scope = $this->lookForSetAllowedUndefinedExpressions($scope, $arg->value);
5268: $lookForUnset = true;
5269: }
5270: }
5271:
5272: if ($calleeReflection !== null) {
5273: $scope = $scope->pushInFunctionCall($calleeReflection, $parameter);
5274: }
5275:
5276: $originalArg = $arg->getAttribute(ArgumentsNormalizer::ORIGINAL_ARG_ATTRIBUTE) ?? $arg;
5277: $nodeCallback($originalArg, $scope);
5278:
5279: $originalScope = $scope;
5280: $scopeToPass = $scope;
5281: if ($i === 0 && $closureBindScope !== null) {
5282: $scopeToPass = $closureBindScope;
5283: }
5284:
5285: $parameterCallableType = null;
5286: if ($parameterType !== null) {
5287: $parameterCallableType = TypeUtils::findCallableType($parameterType);
5288: }
5289:
5290: if ($parameter instanceof ExtendedParameterReflection) {
5291: $parameterCallImmediately = $parameter->isImmediatelyInvokedCallable();
5292: if ($parameterCallImmediately->maybe()) {
5293: $callCallbackImmediately = $parameterCallableType !== null && $calleeReflection instanceof FunctionReflection;
5294: } else {
5295: $callCallbackImmediately = $parameterCallImmediately->yes();
5296: }
5297: } else {
5298: $callCallbackImmediately = $parameterCallableType !== null && $calleeReflection instanceof FunctionReflection;
5299: }
5300:
5301: if ($arg->value instanceof Expr\Closure) {
5302: $restoreThisScope = null;
5303: if (
5304: $closureBindScope === null
5305: && $parameter instanceof ExtendedParameterReflection
5306: && !$arg->value->static
5307: ) {
5308: $closureThisType = $this->resolveClosureThisType($callLike, $calleeReflection, $parameter, $scopeToPass);
5309: if ($closureThisType !== null) {
5310: $restoreThisScope = $scopeToPass;
5311: $scopeToPass = $scopeToPass->assignVariable('this', $closureThisType, new ObjectWithoutClassType(), TrinaryLogic::createYes());
5312: }
5313: }
5314:
5315: if ($parameter !== null) {
5316: $overwritingParameterType = $this->getParameterTypeFromParameterClosureTypeExtension($callLike, $calleeReflection, $parameter, $scopeToPass);
5317:
5318: if ($overwritingParameterType !== null) {
5319: $parameterType = $overwritingParameterType;
5320: }
5321: }
5322:
5323: $this->callNodeCallbackWithExpression($nodeCallback, $arg->value, $scopeToPass, $context);
5324: $closureResult = $this->processClosureNode($stmt, $arg->value, $scopeToPass, $nodeCallback, $context, $parameterType ?? null);
5325: if ($callCallbackImmediately) {
5326: $throwPoints = array_merge($throwPoints, array_map(static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $arg->value, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $arg->value), $closureResult->getThrowPoints()));
5327: $impurePoints = array_merge($impurePoints, $closureResult->getImpurePoints());
5328: $isAlwaysTerminating = $isAlwaysTerminating || $closureResult->isAlwaysTerminating();
5329: }
5330:
5331: $uses = [];
5332: foreach ($arg->value->uses as $use) {
5333: if (!is_string($use->var->name)) {
5334: continue;
5335: }
5336:
5337: $uses[] = $use->var->name;
5338: }
5339:
5340: $scope = $closureResult->getScope();
5341: $invalidateExpressions = $closureResult->getInvalidateExpressions();
5342: if ($restoreThisScope !== null) {
5343: $nodeFinder = new NodeFinder();
5344: $cb = static fn ($expr) => $expr instanceof Variable && $expr->name === 'this';
5345: foreach ($invalidateExpressions as $j => $invalidateExprNode) {
5346: $foundThis = $nodeFinder->findFirst([$invalidateExprNode->getExpr()], $cb);
5347: if ($foundThis === null) {
5348: continue;
5349: }
5350:
5351: unset($invalidateExpressions[$j]);
5352: }
5353: $invalidateExpressions = array_values($invalidateExpressions);
5354: $scope = $scope->restoreThis($restoreThisScope);
5355: }
5356:
5357: $scope = $this->processImmediatelyCalledCallable($scope, $invalidateExpressions, $uses);
5358: } elseif ($arg->value instanceof Expr\ArrowFunction) {
5359: if (
5360: $closureBindScope === null
5361: && $parameter instanceof ExtendedParameterReflection
5362: && !$arg->value->static
5363: ) {
5364: $closureThisType = $this->resolveClosureThisType($callLike, $calleeReflection, $parameter, $scopeToPass);
5365: if ($closureThisType !== null) {
5366: $scopeToPass = $scopeToPass->assignVariable('this', $closureThisType, new ObjectWithoutClassType(), TrinaryLogic::createYes());
5367: }
5368: }
5369:
5370: if ($parameter !== null) {
5371: $overwritingParameterType = $this->getParameterTypeFromParameterClosureTypeExtension($callLike, $calleeReflection, $parameter, $scopeToPass);
5372:
5373: if ($overwritingParameterType !== null) {
5374: $parameterType = $overwritingParameterType;
5375: }
5376: }
5377:
5378: $this->callNodeCallbackWithExpression($nodeCallback, $arg->value, $scopeToPass, $context);
5379: $arrowFunctionResult = $this->processArrowFunctionNode($stmt, $arg->value, $scopeToPass, $nodeCallback, $parameterType ?? null);
5380: if ($callCallbackImmediately) {
5381: $throwPoints = array_merge($throwPoints, array_map(static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $arg->value, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $arg->value), $arrowFunctionResult->getThrowPoints()));
5382: $impurePoints = array_merge($impurePoints, $arrowFunctionResult->getImpurePoints());
5383: $isAlwaysTerminating = $isAlwaysTerminating || $arrowFunctionResult->isAlwaysTerminating();
5384: }
5385: } else {
5386: $exprType = $scope->getType($arg->value);
5387: $exprResult = $this->processExprNode($stmt, $arg->value, $scopeToPass, $nodeCallback, $context->enterDeep());
5388: $throwPoints = array_merge($throwPoints, $exprResult->getThrowPoints());
5389: $impurePoints = array_merge($impurePoints, $exprResult->getImpurePoints());
5390: $isAlwaysTerminating = $isAlwaysTerminating || $exprResult->isAlwaysTerminating();
5391: $scope = $exprResult->getScope();
5392: $hasYield = $hasYield || $exprResult->hasYield();
5393:
5394: if ($exprType->isCallable()->yes()) {
5395: $acceptors = $exprType->getCallableParametersAcceptors($scope);
5396: if (count($acceptors) === 1) {
5397: $scope = $this->processImmediatelyCalledCallable($scope, $acceptors[0]->getInvalidateExpressions(), $acceptors[0]->getUsedVariables());
5398: if ($callCallbackImmediately) {
5399: $callableThrowPoints = array_map(static fn (SimpleThrowPoint $throwPoint) => $throwPoint->isExplicit() ? ThrowPoint::createExplicit($scope, $throwPoint->getType(), $arg->value, $throwPoint->canContainAnyThrowable()) : ThrowPoint::createImplicit($scope, $arg->value), $acceptors[0]->getThrowPoints());
5400: if (!$this->implicitThrows) {
5401: $callableThrowPoints = array_values(array_filter($callableThrowPoints, static fn (ThrowPoint $throwPoint) => $throwPoint->isExplicit()));
5402: }
5403: $throwPoints = array_merge($throwPoints, $callableThrowPoints);
5404: $impurePoints = array_merge($impurePoints, array_map(static fn (SimpleImpurePoint $impurePoint) => new ImpurePoint($scope, $arg->value, $impurePoint->getIdentifier(), $impurePoint->getDescription(), $impurePoint->isCertain()), $acceptors[0]->getImpurePoints()));
5405: $returnType = $acceptors[0]->getReturnType();
5406: $isAlwaysTerminating = $isAlwaysTerminating || ($returnType instanceof NeverType && $returnType->isExplicit());
5407: }
5408: }
5409: }
5410: }
5411:
5412: if ($assignByReference && $lookForUnset) {
5413: $scope = $this->lookForUnsetAllowedUndefinedExpressions($scope, $arg->value);
5414: }
5415:
5416: if ($calleeReflection !== null) {
5417: $scope = $scope->popInFunctionCall();
5418: }
5419:
5420: if ($i !== 0 || $closureBindScope === null) {
5421: continue;
5422: }
5423:
5424: $scope = $scope->restoreOriginalScopeAfterClosureBind($originalScope);
5425: }
5426: foreach ($args as $i => $arg) {
5427: if (!isset($parameters) || $parametersAcceptor === null) {
5428: continue;
5429: }
5430:
5431: $byRefType = new MixedType();
5432: $assignByReference = false;
5433: $currentParameter = null;
5434: if (isset($parameters[$i])) {
5435: $currentParameter = $parameters[$i];
5436: } elseif (count($parameters) > 0 && $parametersAcceptor->isVariadic()) {
5437: $currentParameter = $parameters[count($parameters) - 1];
5438: }
5439:
5440: if ($currentParameter !== null) {
5441: $assignByReference = $currentParameter->passedByReference()->createsNewVariable();
5442: if ($assignByReference) {
5443: if ($currentParameter instanceof ExtendedParameterReflection && $currentParameter->getOutType() !== null) {
5444: $byRefType = $currentParameter->getOutType();
5445: } elseif (
5446: $calleeReflection instanceof MethodReflection
5447: && !$calleeReflection->getDeclaringClass()->isBuiltin()
5448: ) {
5449: $byRefType = $currentParameter->getType();
5450: } elseif (
5451: $calleeReflection instanceof FunctionReflection
5452: && !$calleeReflection->isBuiltin()
5453: ) {
5454: $byRefType = $currentParameter->getType();
5455: }
5456: }
5457: }
5458:
5459: if ($assignByReference) {
5460: if ($currentParameter === null) {
5461: throw new ShouldNotHappenException();
5462: }
5463:
5464: $argValue = $arg->value;
5465: if (!$argValue instanceof Variable || $argValue->name !== 'this') {
5466: $paramOutType = $this->getParameterOutExtensionsType($callLike, $calleeReflection, $currentParameter, $scope);
5467: if ($paramOutType !== null) {
5468: $byRefType = $paramOutType;
5469: }
5470:
5471: $result = $this->processAssignVar(
5472: $scope,
5473: $stmt,
5474: $argValue,
5475: new TypeExpr($byRefType),
5476: static function (Node $node, Scope $scope) use ($nodeCallback): void {
5477: if (!$node instanceof PropertyAssignNode && !$node instanceof VariableAssignNode) {
5478: return;
5479: }
5480:
5481: $nodeCallback($node, $scope);
5482: },
5483: $context,
5484: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
5485: true,
5486: );
5487: $scope = $result->getScope();
5488: }
5489: } elseif ($calleeReflection !== null && $calleeReflection->hasSideEffects()->yes()) {
5490: $argType = $scope->getType($arg->value);
5491: if (!$argType->isObject()->no()) {
5492: $nakedReturnType = null;
5493: if ($nakedMethodReflection !== null) {
5494: $nakedParametersAcceptor = ParametersAcceptorSelector::selectFromArgs(
5495: $scope,
5496: $args,
5497: $nakedMethodReflection->getVariants(),
5498: $nakedMethodReflection->getNamedArgumentsVariants(),
5499: );
5500: $nakedReturnType = $nakedParametersAcceptor->getReturnType();
5501: }
5502: if (
5503: $nakedReturnType === null
5504: || !(new ThisType($nakedMethodReflection->getDeclaringClass()))->isSuperTypeOf($nakedReturnType)->yes()
5505: || $nakedMethodReflection->isPure()->no()
5506: ) {
5507: $nodeCallback(new InvalidateExprNode($arg->value), $scope);
5508: $scope = $scope->invalidateExpression($arg->value, true);
5509: }
5510: } elseif (!(new ResourceType())->isSuperTypeOf($argType)->no()) {
5511: $nodeCallback(new InvalidateExprNode($arg->value), $scope);
5512: $scope = $scope->invalidateExpression($arg->value, true);
5513: }
5514: }
5515: }
5516:
5517: return new ExpressionResult($scope, $hasYield, $isAlwaysTerminating, $throwPoints, $impurePoints);
5518: }
5519:
5520: /**
5521: * @param MethodReflection|FunctionReflection|null $calleeReflection
5522: */
5523: private function getParameterTypeFromParameterClosureTypeExtension(CallLike $callLike, $calleeReflection, ParameterReflection $parameter, MutatingScope $scope): ?Type
5524: {
5525: if ($callLike instanceof FuncCall && $calleeReflection instanceof FunctionReflection) {
5526: foreach ($this->parameterClosureTypeExtensionProvider->getFunctionParameterClosureTypeExtensions() as $functionParameterClosureTypeExtension) {
5527: if ($functionParameterClosureTypeExtension->isFunctionSupported($calleeReflection, $parameter)) {
5528: return $functionParameterClosureTypeExtension->getTypeFromFunctionCall($calleeReflection, $callLike, $parameter, $scope);
5529: }
5530: }
5531: } elseif ($calleeReflection instanceof MethodReflection) {
5532: if ($callLike instanceof StaticCall) {
5533: foreach ($this->parameterClosureTypeExtensionProvider->getStaticMethodParameterClosureTypeExtensions() as $staticMethodParameterClosureTypeExtension) {
5534: if ($staticMethodParameterClosureTypeExtension->isStaticMethodSupported($calleeReflection, $parameter)) {
5535: return $staticMethodParameterClosureTypeExtension->getTypeFromStaticMethodCall($calleeReflection, $callLike, $parameter, $scope);
5536: }
5537: }
5538: } elseif ($callLike instanceof MethodCall) {
5539: foreach ($this->parameterClosureTypeExtensionProvider->getMethodParameterClosureTypeExtensions() as $methodParameterClosureTypeExtension) {
5540: if ($methodParameterClosureTypeExtension->isMethodSupported($calleeReflection, $parameter)) {
5541: return $methodParameterClosureTypeExtension->getTypeFromMethodCall($calleeReflection, $callLike, $parameter, $scope);
5542: }
5543: }
5544: }
5545: }
5546:
5547: return null;
5548: }
5549:
5550: /**
5551: * @param MethodReflection|FunctionReflection|null $calleeReflection
5552: */
5553: private function getParameterOutExtensionsType(CallLike $callLike, $calleeReflection, ParameterReflection $currentParameter, MutatingScope $scope): ?Type
5554: {
5555: $paramOutTypes = [];
5556: if ($callLike instanceof FuncCall && $calleeReflection instanceof FunctionReflection) {
5557: foreach ($this->parameterOutTypeExtensionProvider->getFunctionParameterOutTypeExtensions() as $functionParameterOutTypeExtension) {
5558: if (!$functionParameterOutTypeExtension->isFunctionSupported($calleeReflection, $currentParameter)) {
5559: continue;
5560: }
5561:
5562: $resolvedType = $functionParameterOutTypeExtension->getParameterOutTypeFromFunctionCall($calleeReflection, $callLike, $currentParameter, $scope);
5563: if ($resolvedType === null) {
5564: continue;
5565: }
5566: $paramOutTypes[] = $resolvedType;
5567: }
5568: } elseif ($callLike instanceof MethodCall && $calleeReflection instanceof MethodReflection) {
5569: foreach ($this->parameterOutTypeExtensionProvider->getMethodParameterOutTypeExtensions() as $methodParameterOutTypeExtension) {
5570: if (!$methodParameterOutTypeExtension->isMethodSupported($calleeReflection, $currentParameter)) {
5571: continue;
5572: }
5573:
5574: $resolvedType = $methodParameterOutTypeExtension->getParameterOutTypeFromMethodCall($calleeReflection, $callLike, $currentParameter, $scope);
5575: if ($resolvedType === null) {
5576: continue;
5577: }
5578: $paramOutTypes[] = $resolvedType;
5579: }
5580: } elseif ($callLike instanceof StaticCall && $calleeReflection instanceof MethodReflection) {
5581: foreach ($this->parameterOutTypeExtensionProvider->getStaticMethodParameterOutTypeExtensions() as $staticMethodParameterOutTypeExtension) {
5582: if (!$staticMethodParameterOutTypeExtension->isStaticMethodSupported($calleeReflection, $currentParameter)) {
5583: continue;
5584: }
5585:
5586: $resolvedType = $staticMethodParameterOutTypeExtension->getParameterOutTypeFromStaticMethodCall($calleeReflection, $callLike, $currentParameter, $scope);
5587: if ($resolvedType === null) {
5588: continue;
5589: }
5590: $paramOutTypes[] = $resolvedType;
5591: }
5592: }
5593:
5594: if (count($paramOutTypes) === 1) {
5595: return $paramOutTypes[0];
5596: }
5597:
5598: if (count($paramOutTypes) > 1) {
5599: return TypeCombinator::union(...$paramOutTypes);
5600: }
5601:
5602: return null;
5603: }
5604:
5605: /**
5606: * @param callable(Node $node, Scope $scope): void $nodeCallback
5607: * @param Closure(MutatingScope $scope): ExpressionResult $processExprCallback
5608: */
5609: private function processAssignVar(
5610: MutatingScope $scope,
5611: Node\Stmt $stmt,
5612: Expr $var,
5613: Expr $assignedExpr,
5614: callable $nodeCallback,
5615: ExpressionContext $context,
5616: Closure $processExprCallback,
5617: bool $enterExpressionAssign,
5618: ): ExpressionResult
5619: {
5620: $nodeCallback($var, $enterExpressionAssign ? $scope->enterExpressionAssign($var) : $scope);
5621: $hasYield = false;
5622: $throwPoints = [];
5623: $impurePoints = [];
5624: $isAlwaysTerminating = false;
5625: $isAssignOp = $assignedExpr instanceof Expr\AssignOp && !$enterExpressionAssign;
5626: if ($var instanceof Variable && is_string($var->name)) {
5627: $result = $processExprCallback($scope);
5628: $hasYield = $result->hasYield();
5629: $throwPoints = $result->getThrowPoints();
5630: $impurePoints = $result->getImpurePoints();
5631: $isAlwaysTerminating = $result->isAlwaysTerminating();
5632: if (in_array($var->name, Scope::SUPERGLOBAL_VARIABLES, true)) {
5633: $impurePoints[] = new ImpurePoint($scope, $var, 'superglobal', 'assign to superglobal variable', true);
5634: }
5635: $assignedExpr = $this->unwrapAssign($assignedExpr);
5636: $type = $scope->getType($assignedExpr);
5637:
5638: $conditionalExpressions = [];
5639: if ($assignedExpr instanceof Ternary) {
5640: $if = $assignedExpr->if;
5641: if ($if === null) {
5642: $if = $assignedExpr->cond;
5643: }
5644: $condScope = $this->processExprNode($stmt, $assignedExpr->cond, $scope, static function (): void {
5645: }, ExpressionContext::createDeep())->getScope();
5646: $truthySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($condScope, $assignedExpr->cond, TypeSpecifierContext::createTruthy());
5647: $falseySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($condScope, $assignedExpr->cond, TypeSpecifierContext::createFalsey());
5648: $truthyScope = $condScope->filterBySpecifiedTypes($truthySpecifiedTypes);
5649: $falsyScope = $condScope->filterBySpecifiedTypes($falseySpecifiedTypes);
5650: $truthyType = $truthyScope->getType($if);
5651: $falseyType = $falsyScope->getType($assignedExpr->else);
5652:
5653: if (
5654: $truthyType->isSuperTypeOf($falseyType)->no()
5655: && $falseyType->isSuperTypeOf($truthyType)->no()
5656: ) {
5657: $conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
5658: $conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
5659: $conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
5660: $conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($condScope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
5661: }
5662: }
5663:
5664: $scopeBeforeAssignEval = $scope;
5665: $scope = $result->getScope();
5666: $truthySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($scope, $assignedExpr, TypeSpecifierContext::createTruthy());
5667: $falseySpecifiedTypes = $this->typeSpecifier->specifyTypesInCondition($scope, $assignedExpr, TypeSpecifierContext::createFalsey());
5668:
5669: $truthyType = TypeCombinator::removeFalsey($type);
5670: $falseyType = TypeCombinator::intersect($type, StaticTypeFactory::falsey());
5671:
5672: $conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
5673: $conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $truthySpecifiedTypes, $truthyType);
5674: $conditionalExpressions = $this->processSureTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
5675: $conditionalExpressions = $this->processSureNotTypesForConditionalExpressionsAfterAssign($scope, $var->name, $conditionalExpressions, $falseySpecifiedTypes, $falseyType);
5676:
5677: $nodeCallback(new VariableAssignNode($var, $assignedExpr), $scopeBeforeAssignEval);
5678: $scope = $scope->assignVariable($var->name, $type, $scope->getNativeType($assignedExpr), TrinaryLogic::createYes());
5679: foreach ($conditionalExpressions as $exprString => $holders) {
5680: $scope = $scope->addConditionalExpressions($exprString, $holders);
5681: }
5682: } elseif ($var instanceof ArrayDimFetch) {
5683: $dimFetchStack = [];
5684: $originalVar = $var;
5685: $assignedPropertyExpr = $assignedExpr;
5686: while ($var instanceof ArrayDimFetch) {
5687: if (
5688: $var->var instanceof PropertyFetch
5689: || $var->var instanceof StaticPropertyFetch
5690: ) {
5691: if (((new ObjectType(ArrayAccess::class))->isSuperTypeOf($scope->getType($var->var))->yes())) {
5692: $varForSetOffsetValue = $var->var;
5693: } else {
5694: $varForSetOffsetValue = new OriginalPropertyTypeExpr($var->var);
5695: }
5696: } else {
5697: $varForSetOffsetValue = $var->var;
5698: }
5699: $assignedPropertyExpr = new SetOffsetValueTypeExpr(
5700: $varForSetOffsetValue,
5701: $var->dim,
5702: $assignedPropertyExpr,
5703: );
5704: $dimFetchStack[] = $var;
5705: $var = $var->var;
5706: }
5707:
5708: // 1. eval root expr
5709: if ($enterExpressionAssign) {
5710: $scope = $scope->enterExpressionAssign($var);
5711: }
5712: $result = $this->processExprNode($stmt, $var, $scope, $nodeCallback, $context->enterDeep());
5713: $hasYield = $result->hasYield();
5714: $throwPoints = $result->getThrowPoints();
5715: $impurePoints = $result->getImpurePoints();
5716: $isAlwaysTerminating = $result->isAlwaysTerminating();
5717: $scope = $result->getScope();
5718: if ($enterExpressionAssign) {
5719: $scope = $scope->exitExpressionAssign($var);
5720: }
5721:
5722: // 2. eval dimensions
5723: $offsetTypes = [];
5724: $offsetNativeTypes = [];
5725: $dimFetchStack = array_reverse($dimFetchStack);
5726: $lastDimKey = array_key_last($dimFetchStack);
5727: foreach ($dimFetchStack as $key => $dimFetch) {
5728: $dimExpr = $dimFetch->dim;
5729:
5730: // Callback was already called for last dim at the beginning of the method.
5731: if ($key !== $lastDimKey) {
5732: $nodeCallback($dimFetch, $enterExpressionAssign ? $scope->enterExpressionAssign($dimFetch) : $scope);
5733: }
5734:
5735: if ($dimExpr === null) {
5736: $offsetTypes[] = null;
5737: $offsetNativeTypes[] = null;
5738:
5739: } else {
5740: $offsetTypes[] = $scope->getType($dimExpr);
5741: $offsetNativeTypes[] = $scope->getNativeType($dimExpr);
5742:
5743: if ($enterExpressionAssign) {
5744: $scope->enterExpressionAssign($dimExpr);
5745: }
5746: $result = $this->processExprNode($stmt, $dimExpr, $scope, $nodeCallback, $context->enterDeep());
5747: $hasYield = $hasYield || $result->hasYield();
5748: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
5749: $scope = $result->getScope();
5750:
5751: if ($enterExpressionAssign) {
5752: $scope = $scope->exitExpressionAssign($dimExpr);
5753: }
5754: }
5755: }
5756:
5757: $valueToWrite = $scope->getType($assignedExpr);
5758: $nativeValueToWrite = $scope->getNativeType($assignedExpr);
5759: $originalValueToWrite = $valueToWrite;
5760: $originalNativeValueToWrite = $nativeValueToWrite;
5761: $scopeBeforeAssignEval = $scope;
5762:
5763: // 3. eval assigned expr
5764: $result = $processExprCallback($scope);
5765: $hasYield = $hasYield || $result->hasYield();
5766: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
5767: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
5768: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
5769: $scope = $result->getScope();
5770:
5771: $varType = $scope->getType($var);
5772: $varNativeType = $scope->getNativeType($var);
5773:
5774: // 4. compose types
5775: $isImplicitArrayCreation = $this->isImplicitArrayCreation($dimFetchStack, $scope);
5776: if ($isImplicitArrayCreation->yes()) {
5777: $varType = new ConstantArrayType([], []);
5778: $varNativeType = new ConstantArrayType([], []);
5779: }
5780: $offsetValueType = $varType;
5781: $offsetNativeValueType = $varNativeType;
5782:
5783: $valueToWrite = $this->produceArrayDimFetchAssignValueToWrite($dimFetchStack, $offsetTypes, $offsetValueType, $valueToWrite, $scope);
5784:
5785: if (!$offsetValueType->equals($offsetNativeValueType) || !$valueToWrite->equals($nativeValueToWrite)) {
5786: $nativeValueToWrite = $this->produceArrayDimFetchAssignValueToWrite($dimFetchStack, $offsetNativeTypes, $offsetNativeValueType, $nativeValueToWrite, $scope);
5787: } else {
5788: $rewritten = false;
5789: foreach ($offsetTypes as $i => $offsetType) {
5790: $offsetNativeType = $offsetNativeTypes[$i];
5791:
5792: if ($offsetType === null) {
5793: if ($offsetNativeType !== null) {
5794: throw new ShouldNotHappenException();
5795: }
5796:
5797: continue;
5798: } elseif ($offsetNativeType === null) {
5799: throw new ShouldNotHappenException();
5800: }
5801: if ($offsetType->equals($offsetNativeType)) {
5802: continue;
5803: }
5804:
5805: $nativeValueToWrite = $this->produceArrayDimFetchAssignValueToWrite($dimFetchStack, $offsetNativeTypes, $offsetNativeValueType, $nativeValueToWrite, $scope);
5806: $rewritten = true;
5807: break;
5808: }
5809:
5810: if (!$rewritten) {
5811: $nativeValueToWrite = $valueToWrite;
5812: }
5813: }
5814:
5815: if ($varType->isArray()->yes() || !(new ObjectType(ArrayAccess::class))->isSuperTypeOf($varType)->yes()) {
5816: if ($var instanceof Variable && is_string($var->name)) {
5817: $nodeCallback(new VariableAssignNode($var, $assignedPropertyExpr), $scopeBeforeAssignEval);
5818: $scope = $scope->assignVariable($var->name, $valueToWrite, $nativeValueToWrite, TrinaryLogic::createYes());
5819: } else {
5820: if ($var instanceof PropertyFetch || $var instanceof StaticPropertyFetch) {
5821: $nodeCallback(new PropertyAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scopeBeforeAssignEval);
5822: if ($var instanceof PropertyFetch && $var->name instanceof Node\Identifier && !$isAssignOp) {
5823: $scope = $scope->assignInitializedProperty($scope->getType($var->var), $var->name->toString());
5824: }
5825: }
5826: $scope = $scope->assignExpression(
5827: $var,
5828: $valueToWrite,
5829: $nativeValueToWrite,
5830: );
5831: }
5832:
5833: if ($originalVar->dim instanceof Variable || $originalVar->dim instanceof Node\Scalar) {
5834: $currentVarType = $scope->getType($originalVar);
5835: $currentVarNativeType = $scope->getNativeType($originalVar);
5836: if (
5837: !$originalValueToWrite->isSuperTypeOf($currentVarType)->yes()
5838: || !$originalNativeValueToWrite->isSuperTypeOf($currentVarNativeType)->yes()
5839: ) {
5840: $scope = $scope->assignExpression(
5841: $originalVar,
5842: $originalValueToWrite,
5843: $originalNativeValueToWrite,
5844: );
5845: }
5846: }
5847: } else {
5848: if ($var instanceof Variable) {
5849: $nodeCallback(new VariableAssignNode($var, $assignedPropertyExpr), $scopeBeforeAssignEval);
5850: } elseif ($var instanceof PropertyFetch || $var instanceof StaticPropertyFetch) {
5851: $nodeCallback(new PropertyAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scopeBeforeAssignEval);
5852: if ($var instanceof PropertyFetch && $var->name instanceof Node\Identifier && !$isAssignOp) {
5853: $scope = $scope->assignInitializedProperty($scope->getType($var->var), $var->name->toString());
5854: }
5855: }
5856: }
5857:
5858: if (!$varType->isArray()->yes() && !(new ObjectType(ArrayAccess::class))->isSuperTypeOf($varType)->no()) {
5859: $throwPoints = array_merge($throwPoints, $this->processExprNode(
5860: $stmt,
5861: new MethodCall($var, 'offsetSet'),
5862: $scope,
5863: static function (): void {
5864: },
5865: $context,
5866: )->getThrowPoints());
5867: }
5868: } elseif ($var instanceof PropertyFetch) {
5869: $objectResult = $this->processExprNode($stmt, $var->var, $scope, $nodeCallback, $context);
5870: $hasYield = $objectResult->hasYield();
5871: $throwPoints = $objectResult->getThrowPoints();
5872: $impurePoints = $objectResult->getImpurePoints();
5873: $isAlwaysTerminating = $objectResult->isAlwaysTerminating();
5874: $scope = $objectResult->getScope();
5875:
5876: $propertyName = null;
5877: if ($var->name instanceof Node\Identifier) {
5878: $propertyName = $var->name->name;
5879: } else {
5880: $propertyNameResult = $this->processExprNode($stmt, $var->name, $scope, $nodeCallback, $context);
5881: $hasYield = $hasYield || $propertyNameResult->hasYield();
5882: $throwPoints = array_merge($throwPoints, $propertyNameResult->getThrowPoints());
5883: $impurePoints = array_merge($impurePoints, $propertyNameResult->getImpurePoints());
5884: $isAlwaysTerminating = $isAlwaysTerminating || $propertyNameResult->isAlwaysTerminating();
5885: $scope = $propertyNameResult->getScope();
5886: }
5887:
5888: $scopeBeforeAssignEval = $scope;
5889: $result = $processExprCallback($scope);
5890: $hasYield = $hasYield || $result->hasYield();
5891: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
5892: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
5893: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
5894: $scope = $result->getScope();
5895:
5896: if ($var->name instanceof Expr && $this->phpVersion->supportsPropertyHooks()) {
5897: $throwPoints[] = ThrowPoint::createImplicit($scope, $var);
5898: }
5899:
5900: $propertyHolderType = $scope->getType($var->var);
5901: if ($propertyName !== null && $propertyHolderType->hasProperty($propertyName)->yes()) {
5902: $propertyReflection = $propertyHolderType->getProperty($propertyName, $scope);
5903: $assignedExprType = $scope->getType($assignedExpr);
5904: $nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scopeBeforeAssignEval);
5905: if ($propertyReflection->canChangeTypeAfterAssignment()) {
5906: if ($propertyReflection->hasNativeType()) {
5907: $propertyNativeType = $propertyReflection->getNativeType();
5908:
5909: $assignedTypeIsCompatible = $propertyNativeType->isSuperTypeOf($assignedExprType)->yes();
5910: if (!$assignedTypeIsCompatible) {
5911: foreach (TypeUtils::flattenTypes($propertyNativeType) as $type) {
5912: if ($type->isSuperTypeOf($assignedExprType)->yes()) {
5913: $assignedTypeIsCompatible = true;
5914: break;
5915: }
5916: }
5917: }
5918:
5919: if ($assignedTypeIsCompatible) {
5920: $scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
5921: } else {
5922: $scope = $scope->assignExpression(
5923: $var,
5924: TypeCombinator::intersect($assignedExprType->toCoercedArgumentType($scope->isDeclareStrictTypes()), $propertyNativeType),
5925: TypeCombinator::intersect($scope->getNativeType($assignedExpr)->toCoercedArgumentType($scope->isDeclareStrictTypes()), $propertyNativeType),
5926: );
5927: }
5928: } else {
5929: $scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
5930: }
5931: }
5932: $declaringClass = $propertyReflection->getDeclaringClass();
5933: if ($declaringClass->hasNativeProperty($propertyName)) {
5934: $nativeProperty = $declaringClass->getNativeProperty($propertyName);
5935: if (
5936: !$nativeProperty->getNativeType()->accepts($assignedExprType, true)->yes()
5937: ) {
5938: $throwPoints[] = ThrowPoint::createExplicit($scope, new ObjectType(TypeError::class), $assignedExpr, false);
5939: }
5940: if ($this->phpVersion->supportsPropertyHooks()) {
5941: $throwPoints = array_merge($throwPoints, $this->getPropertyAssignThrowPointsFromSetHook($scope, $var, $nativeProperty));
5942: }
5943: if ($enterExpressionAssign) {
5944: $scope = $scope->assignInitializedProperty($propertyHolderType, $propertyName);
5945: }
5946: }
5947: } else {
5948: // fallback
5949: $assignedExprType = $scope->getType($assignedExpr);
5950: $nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scopeBeforeAssignEval);
5951: $scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
5952: // simulate dynamic property assign by __set to get throw points
5953: if (!$propertyHolderType->hasMethod('__set')->no()) {
5954: $throwPoints = array_merge($throwPoints, $this->processExprNode(
5955: $stmt,
5956: new MethodCall($var->var, '__set'),
5957: $scope,
5958: static function (): void {
5959: },
5960: $context,
5961: )->getThrowPoints());
5962: }
5963: }
5964:
5965: } elseif ($var instanceof Expr\StaticPropertyFetch) {
5966: if ($var->class instanceof Node\Name) {
5967: $propertyHolderType = $scope->resolveTypeByName($var->class);
5968: } else {
5969: $this->processExprNode($stmt, $var->class, $scope, $nodeCallback, $context);
5970: $propertyHolderType = $scope->getType($var->class);
5971: }
5972:
5973: $propertyName = null;
5974: if ($var->name instanceof Node\Identifier) {
5975: $propertyName = $var->name->name;
5976: } else {
5977: $propertyNameResult = $this->processExprNode($stmt, $var->name, $scope, $nodeCallback, $context);
5978: $hasYield = $propertyNameResult->hasYield();
5979: $throwPoints = $propertyNameResult->getThrowPoints();
5980: $impurePoints = $propertyNameResult->getImpurePoints();
5981: $isAlwaysTerminating = $propertyNameResult->isAlwaysTerminating();
5982: $scope = $propertyNameResult->getScope();
5983: }
5984:
5985: $scopeBeforeAssignEval = $scope;
5986: $result = $processExprCallback($scope);
5987: $hasYield = $hasYield || $result->hasYield();
5988: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
5989: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
5990: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
5991: $scope = $result->getScope();
5992:
5993: if ($propertyName !== null) {
5994: $propertyReflection = $scope->getPropertyReflection($propertyHolderType, $propertyName);
5995: $assignedExprType = $scope->getType($assignedExpr);
5996: $nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scopeBeforeAssignEval);
5997: if ($propertyReflection !== null && $propertyReflection->canChangeTypeAfterAssignment()) {
5998: if ($propertyReflection->hasNativeType()) {
5999: $propertyNativeType = $propertyReflection->getNativeType();
6000: $assignedTypeIsCompatible = $propertyNativeType->isSuperTypeOf($assignedExprType)->yes();
6001:
6002: if (!$assignedTypeIsCompatible) {
6003: foreach (TypeUtils::flattenTypes($propertyNativeType) as $type) {
6004: if ($type->isSuperTypeOf($assignedExprType)->yes()) {
6005: $assignedTypeIsCompatible = true;
6006: break;
6007: }
6008: }
6009: }
6010:
6011: if ($assignedTypeIsCompatible) {
6012: $scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
6013: } else {
6014: $scope = $scope->assignExpression(
6015: $var,
6016: TypeCombinator::intersect($assignedExprType->toCoercedArgumentType($scope->isDeclareStrictTypes()), $propertyNativeType),
6017: TypeCombinator::intersect($scope->getNativeType($assignedExpr)->toCoercedArgumentType($scope->isDeclareStrictTypes()), $propertyNativeType),
6018: );
6019: }
6020: } else {
6021: $scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
6022: }
6023: }
6024: } else {
6025: // fallback
6026: $assignedExprType = $scope->getType($assignedExpr);
6027: $nodeCallback(new PropertyAssignNode($var, $assignedExpr, $isAssignOp), $scopeBeforeAssignEval);
6028: $scope = $scope->assignExpression($var, $assignedExprType, $scope->getNativeType($assignedExpr));
6029: }
6030: } elseif ($var instanceof List_) {
6031: $result = $processExprCallback($scope);
6032: $hasYield = $result->hasYield();
6033: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
6034: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
6035: $isAlwaysTerminating = $result->isAlwaysTerminating();
6036: $scope = $result->getScope();
6037: foreach ($var->items as $i => $arrayItem) {
6038: if ($arrayItem === null) {
6039: continue;
6040: }
6041:
6042: $itemScope = $scope;
6043: if ($enterExpressionAssign) {
6044: $itemScope = $itemScope->enterExpressionAssign($arrayItem->value);
6045: }
6046: $itemScope = $this->lookForSetAllowedUndefinedExpressions($itemScope, $arrayItem->value);
6047: $nodeCallback($arrayItem, $itemScope);
6048: if ($arrayItem->key !== null) {
6049: $keyResult = $this->processExprNode($stmt, $arrayItem->key, $itemScope, $nodeCallback, $context->enterDeep());
6050: $hasYield = $hasYield || $keyResult->hasYield();
6051: $throwPoints = array_merge($throwPoints, $keyResult->getThrowPoints());
6052: $impurePoints = array_merge($impurePoints, $keyResult->getImpurePoints());
6053: $isAlwaysTerminating = $isAlwaysTerminating || $keyResult->isAlwaysTerminating();
6054: $itemScope = $keyResult->getScope();
6055: }
6056:
6057: $valueResult = $this->processExprNode($stmt, $arrayItem->value, $itemScope, $nodeCallback, $context->enterDeep());
6058: $hasYield = $hasYield || $valueResult->hasYield();
6059: $throwPoints = array_merge($throwPoints, $valueResult->getThrowPoints());
6060: $impurePoints = array_merge($impurePoints, $valueResult->getImpurePoints());
6061: $isAlwaysTerminating = $isAlwaysTerminating || $valueResult->isAlwaysTerminating();
6062:
6063: if ($arrayItem->key === null) {
6064: $dimExpr = new Node\Scalar\Int_($i);
6065: } else {
6066: $dimExpr = $arrayItem->key;
6067: }
6068: $result = $this->processAssignVar(
6069: $scope,
6070: $stmt,
6071: $arrayItem->value,
6072: new GetOffsetValueTypeExpr($assignedExpr, $dimExpr),
6073: $nodeCallback,
6074: $context,
6075: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
6076: $enterExpressionAssign,
6077: );
6078: $scope = $result->getScope();
6079: $hasYield = $hasYield || $result->hasYield();
6080: $throwPoints = array_merge($throwPoints, $result->getThrowPoints());
6081: $impurePoints = array_merge($impurePoints, $result->getImpurePoints());
6082: $isAlwaysTerminating = $isAlwaysTerminating || $result->isAlwaysTerminating();
6083: }
6084: } elseif ($var instanceof ExistingArrayDimFetch) {
6085: $dimFetchStack = [];
6086: $assignedPropertyExpr = $assignedExpr;
6087: while ($var instanceof ExistingArrayDimFetch) {
6088: if (
6089: $var->getVar() instanceof PropertyFetch
6090: || $var->getVar() instanceof StaticPropertyFetch
6091: ) {
6092: if (((new ObjectType(ArrayAccess::class))->isSuperTypeOf($scope->getType($var->getVar()))->yes())) {
6093: $varForSetOffsetValue = $var->getVar();
6094: } else {
6095: $varForSetOffsetValue = new OriginalPropertyTypeExpr($var->getVar());
6096: }
6097: } else {
6098: $varForSetOffsetValue = $var->getVar();
6099: }
6100: $assignedPropertyExpr = new SetExistingOffsetValueTypeExpr(
6101: $varForSetOffsetValue,
6102: $var->getDim(),
6103: $assignedPropertyExpr,
6104: );
6105: $dimFetchStack[] = $var;
6106: $var = $var->getVar();
6107: }
6108:
6109: $offsetTypes = [];
6110: $offsetNativeTypes = [];
6111: foreach (array_reverse($dimFetchStack) as $dimFetch) {
6112: $dimExpr = $dimFetch->getDim();
6113: $offsetTypes[] = $scope->getType($dimExpr);
6114: $offsetNativeTypes[] = $scope->getNativeType($dimExpr);
6115: }
6116:
6117: $valueToWrite = $scope->getType($assignedExpr);
6118: $nativeValueToWrite = $scope->getNativeType($assignedExpr);
6119: $varType = $scope->getType($var);
6120: $varNativeType = $scope->getNativeType($var);
6121:
6122: $offsetValueType = $varType;
6123: $offsetNativeValueType = $varNativeType;
6124: $offsetValueTypeStack = [$offsetValueType];
6125: $offsetValueNativeTypeStack = [$offsetNativeValueType];
6126: foreach (array_slice($offsetTypes, 0, -1) as $offsetType) {
6127: $offsetValueType = $offsetValueType->getOffsetValueType($offsetType);
6128: $offsetValueTypeStack[] = $offsetValueType;
6129: }
6130: foreach (array_slice($offsetNativeTypes, 0, -1) as $offsetNativeType) {
6131: $offsetNativeValueType = $offsetNativeValueType->getOffsetValueType($offsetNativeType);
6132: $offsetValueNativeTypeStack[] = $offsetNativeValueType;
6133: }
6134:
6135: foreach (array_reverse($offsetTypes) as $offsetType) {
6136: /** @var Type $offsetValueType */
6137: $offsetValueType = array_pop($offsetValueTypeStack);
6138: $valueToWrite = $offsetValueType->setExistingOffsetValueType($offsetType, $valueToWrite);
6139: }
6140: foreach (array_reverse($offsetNativeTypes) as $offsetNativeType) {
6141: /** @var Type $offsetNativeValueType */
6142: $offsetNativeValueType = array_pop($offsetValueNativeTypeStack);
6143: $nativeValueToWrite = $offsetNativeValueType->setExistingOffsetValueType($offsetNativeType, $nativeValueToWrite);
6144: }
6145:
6146: if ($var instanceof Variable && is_string($var->name)) {
6147: $nodeCallback(new VariableAssignNode($var, $assignedPropertyExpr), $scope);
6148: $scope = $scope->assignVariable($var->name, $valueToWrite, $nativeValueToWrite, TrinaryLogic::createYes());
6149: } else {
6150: if ($var instanceof PropertyFetch || $var instanceof StaticPropertyFetch) {
6151: $nodeCallback(new PropertyAssignNode($var, $assignedPropertyExpr, $isAssignOp), $scope);
6152: }
6153: $scope = $scope->assignExpression(
6154: $var,
6155: $valueToWrite,
6156: $nativeValueToWrite,
6157: );
6158: }
6159: }
6160:
6161: return new ExpressionResult($scope, $hasYield, $isAlwaysTerminating, $throwPoints, $impurePoints);
6162: }
6163:
6164: /**
6165: * @param list<ArrayDimFetch> $dimFetchStack
6166: */
6167: private function isImplicitArrayCreation(array $dimFetchStack, Scope $scope): TrinaryLogic
6168: {
6169: if (count($dimFetchStack) === 0) {
6170: return TrinaryLogic::createNo();
6171: }
6172:
6173: $varNode = $dimFetchStack[0]->var;
6174: if (!$varNode instanceof Variable) {
6175: return TrinaryLogic::createNo();
6176: }
6177:
6178: if (!is_string($varNode->name)) {
6179: return TrinaryLogic::createNo();
6180: }
6181:
6182: return $scope->hasVariableType($varNode->name)->negate();
6183: }
6184:
6185: /**
6186: * @param list<ArrayDimFetch> $dimFetchStack
6187: * @param list<Type|null> $offsetTypes
6188: */
6189: private function produceArrayDimFetchAssignValueToWrite(array $dimFetchStack, array $offsetTypes, Type $offsetValueType, Type $valueToWrite, Scope $scope): Type
6190: {
6191: $offsetValueTypeStack = [$offsetValueType];
6192: foreach (array_slice($offsetTypes, 0, -1) as $offsetType) {
6193: if ($offsetType === null) {
6194: $offsetValueType = new ConstantArrayType([], []);
6195:
6196: } else {
6197: $offsetValueType = $offsetValueType->getOffsetValueType($offsetType);
6198: if ($offsetValueType instanceof ErrorType) {
6199: $offsetValueType = new ConstantArrayType([], []);
6200: }
6201: }
6202:
6203: $offsetValueTypeStack[] = $offsetValueType;
6204: }
6205:
6206: foreach (array_reverse($offsetTypes) as $i => $offsetType) {
6207: /** @var Type $offsetValueType */
6208: $offsetValueType = array_pop($offsetValueTypeStack);
6209: if (
6210: !$offsetValueType instanceof MixedType
6211: && !$offsetValueType->isConstantArray()->yes()
6212: ) {
6213: $types = [
6214: new ArrayType(new MixedType(), new MixedType()),
6215: new ObjectType(ArrayAccess::class),
6216: new NullType(),
6217: ];
6218: if ($offsetType !== null && $offsetType->isInteger()->yes()) {
6219: $types[] = new StringType();
6220: }
6221: $offsetValueType = TypeCombinator::intersect($offsetValueType, TypeCombinator::union(...$types));
6222: }
6223:
6224: $arrayDimFetch = $dimFetchStack[$i] ?? null;
6225: if (
6226: $offsetType !== null
6227: && $arrayDimFetch !== null
6228: && $scope->hasExpressionType($arrayDimFetch)->yes()
6229: ) {
6230: $hasOffsetType = null;
6231: if ($offsetType instanceof ConstantStringType || $offsetType instanceof ConstantIntegerType) {
6232: $hasOffsetType = new HasOffsetValueType($offsetType, $valueToWrite);
6233: }
6234: $valueToWrite = $offsetValueType->setExistingOffsetValueType($offsetType, $valueToWrite);
6235:
6236: if ($valueToWrite->isArray()->yes()) {
6237: if ($hasOffsetType !== null) {
6238: $valueToWrite = TypeCombinator::intersect(
6239: $valueToWrite,
6240: $hasOffsetType,
6241: );
6242: } else {
6243: $valueToWrite = TypeCombinator::intersect(
6244: $valueToWrite,
6245: new NonEmptyArrayType(),
6246: );
6247: }
6248: }
6249:
6250: } else {
6251: $valueToWrite = $offsetValueType->setOffsetValueType($offsetType, $valueToWrite, $i === 0);
6252: }
6253:
6254: if ($arrayDimFetch === null || !$offsetValueType->isList()->yes()) {
6255: continue;
6256: }
6257:
6258: if ($scope->hasExpressionType($arrayDimFetch)->yes()) { // keep list for $list[$index] assignments
6259: $valueToWrite = TypeCombinator::intersect($valueToWrite, new AccessoryArrayListType());
6260: } elseif ($arrayDimFetch->dim instanceof BinaryOp\Plus) {
6261: if ( // keep list for $list[$index + 1] assignments
6262: $arrayDimFetch->dim->right instanceof Variable
6263: && $arrayDimFetch->dim->left instanceof Node\Scalar\Int_
6264: && $arrayDimFetch->dim->left->value === 1
6265: && $scope->hasExpressionType(new ArrayDimFetch($arrayDimFetch->var, $arrayDimFetch->dim->right))->yes()
6266: ) {
6267: $valueToWrite = TypeCombinator::intersect($valueToWrite, new AccessoryArrayListType());
6268: } elseif ( // keep list for $list[1 + $index] assignments
6269: $arrayDimFetch->dim->left instanceof Variable
6270: && $arrayDimFetch->dim->right instanceof Node\Scalar\Int_
6271: && $arrayDimFetch->dim->right->value === 1
6272: && $scope->hasExpressionType(new ArrayDimFetch($arrayDimFetch->var, $arrayDimFetch->dim->left))->yes()
6273: ) {
6274: $valueToWrite = TypeCombinator::intersect($valueToWrite, new AccessoryArrayListType());
6275: }
6276: }
6277: }
6278:
6279: return $valueToWrite;
6280: }
6281:
6282: private function unwrapAssign(Expr $expr): Expr
6283: {
6284: if ($expr instanceof Assign) {
6285: return $this->unwrapAssign($expr->expr);
6286: }
6287:
6288: return $expr;
6289: }
6290:
6291: /**
6292: * @param array<string, ConditionalExpressionHolder[]> $conditionalExpressions
6293: * @return array<string, ConditionalExpressionHolder[]>
6294: */
6295: private function processSureTypesForConditionalExpressionsAfterAssign(Scope $scope, string $variableName, array $conditionalExpressions, SpecifiedTypes $specifiedTypes, Type $variableType): array
6296: {
6297: foreach ($specifiedTypes->getSureTypes() as $exprString => [$expr, $exprType]) {
6298: if (!$expr instanceof Variable) {
6299: continue;
6300: }
6301: if (!is_string($expr->name)) {
6302: continue;
6303: }
6304:
6305: if ($expr->name === $variableName) {
6306: continue;
6307: }
6308:
6309: if (!isset($conditionalExpressions[$exprString])) {
6310: $conditionalExpressions[$exprString] = [];
6311: }
6312:
6313: $holder = new ConditionalExpressionHolder([
6314: '$' . $variableName => ExpressionTypeHolder::createYes(new Variable($variableName), $variableType),
6315: ], ExpressionTypeHolder::createYes(
6316: $expr,
6317: TypeCombinator::intersect($scope->getType($expr), $exprType),
6318: ));
6319: $conditionalExpressions[$exprString][$holder->getKey()] = $holder;
6320: }
6321:
6322: return $conditionalExpressions;
6323: }
6324:
6325: /**
6326: * @param array<string, ConditionalExpressionHolder[]> $conditionalExpressions
6327: * @return array<string, ConditionalExpressionHolder[]>
6328: */
6329: private function processSureNotTypesForConditionalExpressionsAfterAssign(Scope $scope, string $variableName, array $conditionalExpressions, SpecifiedTypes $specifiedTypes, Type $variableType): array
6330: {
6331: foreach ($specifiedTypes->getSureNotTypes() as $exprString => [$expr, $exprType]) {
6332: if (!$expr instanceof Variable) {
6333: continue;
6334: }
6335: if (!is_string($expr->name)) {
6336: continue;
6337: }
6338:
6339: if ($expr->name === $variableName) {
6340: continue;
6341: }
6342:
6343: if (!isset($conditionalExpressions[$exprString])) {
6344: $conditionalExpressions[$exprString] = [];
6345: }
6346:
6347: $holder = new ConditionalExpressionHolder([
6348: '$' . $variableName => ExpressionTypeHolder::createYes(new Variable($variableName), $variableType),
6349: ], ExpressionTypeHolder::createYes(
6350: $expr,
6351: TypeCombinator::remove($scope->getType($expr), $exprType),
6352: ));
6353: $conditionalExpressions[$exprString][$holder->getKey()] = $holder;
6354: }
6355:
6356: return $conditionalExpressions;
6357: }
6358:
6359: /**
6360: * @param callable(Node $node, Scope $scope): void $nodeCallback
6361: */
6362: private function processStmtVarAnnotation(MutatingScope $scope, Node\Stmt $stmt, ?Expr $defaultExpr, callable $nodeCallback): MutatingScope
6363: {
6364: $function = $scope->getFunction();
6365: $variableLessTags = [];
6366:
6367: foreach ($stmt->getComments() as $comment) {
6368: if (!$comment instanceof Doc) {
6369: continue;
6370: }
6371:
6372: $resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
6373: $scope->getFile(),
6374: $scope->isInClass() ? $scope->getClassReflection()->getName() : null,
6375: $scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
6376: $function !== null ? $function->getName() : null,
6377: $comment->getText(),
6378: );
6379:
6380: $assignedVariable = null;
6381: if (
6382: $stmt instanceof Node\Stmt\Expression
6383: && ($stmt->expr instanceof Assign || $stmt->expr instanceof AssignRef)
6384: && $stmt->expr->var instanceof Variable
6385: && is_string($stmt->expr->var->name)
6386: ) {
6387: $assignedVariable = $stmt->expr->var->name;
6388: }
6389:
6390: foreach ($resolvedPhpDoc->getVarTags() as $name => $varTag) {
6391: if (is_int($name)) {
6392: $variableLessTags[] = $varTag;
6393: continue;
6394: }
6395:
6396: if ($name === $assignedVariable) {
6397: continue;
6398: }
6399:
6400: $certainty = $scope->hasVariableType($name);
6401: if ($certainty->no()) {
6402: continue;
6403: }
6404:
6405: if ($scope->isInClass() && $scope->getFunction() === null) {
6406: continue;
6407: }
6408:
6409: if ($scope->canAnyVariableExist()) {
6410: $certainty = TrinaryLogic::createYes();
6411: }
6412:
6413: $variableNode = new Variable($name, $stmt->getAttributes());
6414: $originalType = $scope->getVariableType($name);
6415: if (!$originalType->equals($varTag->getType())) {
6416: $nodeCallback(new VarTagChangedExpressionTypeNode($varTag, $variableNode), $scope);
6417: }
6418:
6419: $scope = $scope->assignVariable(
6420: $name,
6421: $varTag->getType(),
6422: $scope->getNativeType($variableNode),
6423: $certainty,
6424: );
6425: }
6426: }
6427:
6428: if (count($variableLessTags) === 1 && $defaultExpr !== null) {
6429: $originalType = $scope->getType($defaultExpr);
6430: $varTag = $variableLessTags[0];
6431: if (!$originalType->equals($varTag->getType())) {
6432: $nodeCallback(new VarTagChangedExpressionTypeNode($varTag, $defaultExpr), $scope);
6433: }
6434: $scope = $scope->assignExpression($defaultExpr, $varTag->getType(), new MixedType());
6435: }
6436:
6437: return $scope;
6438: }
6439:
6440: /**
6441: * @param array<int, string> $variableNames
6442: */
6443: private function processVarAnnotation(MutatingScope $scope, array $variableNames, Node\Stmt $node, bool &$changed = false): MutatingScope
6444: {
6445: $function = $scope->getFunction();
6446: $varTags = [];
6447: foreach ($node->getComments() as $comment) {
6448: if (!$comment instanceof Doc) {
6449: continue;
6450: }
6451:
6452: $resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
6453: $scope->getFile(),
6454: $scope->isInClass() ? $scope->getClassReflection()->getName() : null,
6455: $scope->isInTrait() ? $scope->getTraitReflection()->getName() : null,
6456: $function !== null ? $function->getName() : null,
6457: $comment->getText(),
6458: );
6459: foreach ($resolvedPhpDoc->getVarTags() as $key => $varTag) {
6460: $varTags[$key] = $varTag;
6461: }
6462: }
6463:
6464: if (count($varTags) === 0) {
6465: return $scope;
6466: }
6467:
6468: foreach ($variableNames as $variableName) {
6469: if (!isset($varTags[$variableName])) {
6470: continue;
6471: }
6472:
6473: $variableType = $varTags[$variableName]->getType();
6474: $changed = true;
6475: $scope = $scope->assignVariable($variableName, $variableType, new MixedType(), TrinaryLogic::createYes());
6476: }
6477:
6478: if (count($variableNames) === 1 && count($varTags) === 1 && isset($varTags[0])) {
6479: $variableType = $varTags[0]->getType();
6480: $changed = true;
6481: $scope = $scope->assignVariable($variableNames[0], $variableType, new MixedType(), TrinaryLogic::createYes());
6482: }
6483:
6484: return $scope;
6485: }
6486:
6487: private function enterForeach(MutatingScope $scope, MutatingScope $originalScope, Foreach_ $stmt): MutatingScope
6488: {
6489: if ($stmt->expr instanceof Variable && is_string($stmt->expr->name)) {
6490: $scope = $this->processVarAnnotation($scope, [$stmt->expr->name], $stmt);
6491: }
6492:
6493: $iterateeType = $originalScope->getType($stmt->expr);
6494: if (
6495: ($stmt->valueVar instanceof Variable && is_string($stmt->valueVar->name))
6496: && ($stmt->keyVar === null || ($stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)))
6497: ) {
6498: $keyVarName = null;
6499: if ($stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)) {
6500: $keyVarName = $stmt->keyVar->name;
6501: }
6502: $scope = $scope->enterForeach(
6503: $originalScope,
6504: $stmt->expr,
6505: $stmt->valueVar->name,
6506: $keyVarName,
6507: );
6508: $vars = [$stmt->valueVar->name];
6509: if ($keyVarName !== null) {
6510: $vars[] = $keyVarName;
6511: }
6512: } else {
6513: $scope = $this->processAssignVar(
6514: $scope,
6515: $stmt,
6516: $stmt->valueVar,
6517: new GetIterableValueTypeExpr($stmt->expr),
6518: static function (): void {
6519: },
6520: ExpressionContext::createDeep(),
6521: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
6522: true,
6523: )->getScope();
6524: $vars = $this->getAssignedVariables($stmt->valueVar);
6525: if (
6526: $stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)
6527: ) {
6528: $scope = $scope->enterForeachKey($originalScope, $stmt->expr, $stmt->keyVar->name);
6529: $vars[] = $stmt->keyVar->name;
6530: } elseif ($stmt->keyVar !== null) {
6531: $scope = $this->processAssignVar(
6532: $scope,
6533: $stmt,
6534: $stmt->keyVar,
6535: new GetIterableKeyTypeExpr($stmt->expr),
6536: static function (): void {
6537: },
6538: ExpressionContext::createDeep(),
6539: static fn (MutatingScope $scope): ExpressionResult => new ExpressionResult($scope, false, false, [], []),
6540: true,
6541: )->getScope();
6542: $vars = array_merge($vars, $this->getAssignedVariables($stmt->keyVar));
6543: }
6544: }
6545:
6546: $constantArrays = $iterateeType->getConstantArrays();
6547: if (
6548: $stmt->getDocComment() === null
6549: && $iterateeType->isConstantArray()->yes()
6550: && count($constantArrays) === 1
6551: && $stmt->valueVar instanceof Variable && is_string($stmt->valueVar->name)
6552: && $stmt->keyVar instanceof Variable && is_string($stmt->keyVar->name)
6553: ) {
6554: $valueConditionalHolders = [];
6555: $arrayDimFetchConditionalHolders = [];
6556: foreach ($constantArrays[0]->getKeyTypes() as $i => $keyType) {
6557: $valueType = $constantArrays[0]->getValueTypes()[$i];
6558: $holder = new ConditionalExpressionHolder([
6559: '$' . $stmt->keyVar->name => ExpressionTypeHolder::createYes(new Variable($stmt->keyVar->name), $keyType),
6560: ], new ExpressionTypeHolder($stmt->valueVar, $valueType, TrinaryLogic::createYes()));
6561: $valueConditionalHolders[$holder->getKey()] = $holder;
6562: $arrayDimFetchHolder = new ConditionalExpressionHolder([
6563: '$' . $stmt->keyVar->name => ExpressionTypeHolder::createYes(new Variable($stmt->keyVar->name), $keyType),
6564: ], new ExpressionTypeHolder(new ArrayDimFetch($stmt->expr, $stmt->keyVar), $valueType, TrinaryLogic::createYes()));
6565: $arrayDimFetchConditionalHolders[$arrayDimFetchHolder->getKey()] = $arrayDimFetchHolder;
6566: }
6567:
6568: $scope = $scope->addConditionalExpressions(
6569: '$' . $stmt->valueVar->name,
6570: $valueConditionalHolders,
6571: );
6572: if ($stmt->expr instanceof Variable && is_string($stmt->expr->name)) {
6573: $scope = $scope->addConditionalExpressions(
6574: sprintf('$%s[$%s]', $stmt->expr->name, $stmt->keyVar->name),
6575: $arrayDimFetchConditionalHolders,
6576: );
6577: }
6578: }
6579:
6580: return $this->processVarAnnotation($scope, $vars, $stmt);
6581: }
6582:
6583: /**
6584: * @param callable(Node $node, Scope $scope): void $nodeCallback
6585: */
6586: private function processTraitUse(Node\Stmt\TraitUse $node, MutatingScope $classScope, callable $nodeCallback): void
6587: {
6588: $parentTraitNames = [];
6589: $parent = $classScope->getParentScope();
6590: while ($parent !== null) {
6591: if ($parent->isInTrait()) {
6592: $parentTraitNames[] = $parent->getTraitReflection()->getName();
6593: }
6594: $parent = $parent->getParentScope();
6595: }
6596:
6597: foreach ($node->traits as $trait) {
6598: $traitName = (string) $trait;
6599: if (in_array($traitName, $parentTraitNames, true)) {
6600: continue;
6601: }
6602: if (!$this->reflectionProvider->hasClass($traitName)) {
6603: continue;
6604: }
6605: $traitReflection = $this->reflectionProvider->getClass($traitName);
6606: $traitFileName = $traitReflection->getFileName();
6607: if ($traitFileName === null) {
6608: continue; // trait from eval or from PHP itself
6609: }
6610: $fileName = $this->fileHelper->normalizePath($traitFileName);
6611: if (!isset($this->analysedFiles[$fileName])) {
6612: continue;
6613: }
6614: $adaptations = [];
6615: foreach ($node->adaptations as $adaptation) {
6616: if ($adaptation->trait === null) {
6617: $adaptations[] = $adaptation;
6618: continue;
6619: }
6620: if ($adaptation->trait->toLowerString() !== $trait->toLowerString()) {
6621: continue;
6622: }
6623:
6624: $adaptations[] = $adaptation;
6625: }
6626: $parserNodes = $this->parser->parseFile($fileName);
6627: $this->processNodesForTraitUse($parserNodes, $traitReflection, $classScope, $adaptations, $nodeCallback);
6628: }
6629: }
6630:
6631: /**
6632: * @param Node[]|Node|scalar|null $node
6633: * @param Node\Stmt\TraitUseAdaptation[] $adaptations
6634: * @param callable(Node $node, Scope $scope): void $nodeCallback
6635: */
6636: private function processNodesForTraitUse($node, ClassReflection $traitReflection, MutatingScope $scope, array $adaptations, callable $nodeCallback): void
6637: {
6638: if ($node instanceof Node) {
6639: if ($node instanceof Node\Stmt\Trait_ && $traitReflection->getName() === (string) $node->namespacedName && $traitReflection->getNativeReflection()->getStartLine() === $node->getStartLine()) {
6640: $methodModifiers = [];
6641: $methodNames = [];
6642: foreach ($adaptations as $adaptation) {
6643: if (!$adaptation instanceof Node\Stmt\TraitUseAdaptation\Alias) {
6644: continue;
6645: }
6646:
6647: $methodName = $adaptation->method->toLowerString();
6648: if ($adaptation->newModifier !== null) {
6649: $methodModifiers[$methodName] = $adaptation->newModifier;
6650: }
6651:
6652: if ($adaptation->newName === null) {
6653: continue;
6654: }
6655:
6656: $methodNames[$methodName] = $adaptation->newName;
6657: }
6658:
6659: $stmts = $node->stmts;
6660: foreach ($stmts as $i => $stmt) {
6661: if (!$stmt instanceof Node\Stmt\ClassMethod) {
6662: continue;
6663: }
6664: $methodName = $stmt->name->toLowerString();
6665: $methodAst = clone $stmt;
6666: $stmts[$i] = $methodAst;
6667: if (array_key_exists($methodName, $methodModifiers)) {
6668: $methodAst->flags = ($methodAst->flags & ~ Modifiers::VISIBILITY_MASK) | $methodModifiers[$methodName];
6669: }
6670:
6671: if (!array_key_exists($methodName, $methodNames)) {
6672: continue;
6673: }
6674:
6675: $methodAst->setAttribute('originalTraitMethodName', $methodAst->name->toLowerString());
6676: $methodAst->name = $methodNames[$methodName];
6677: }
6678:
6679: if (!$scope->isInClass()) {
6680: throw new ShouldNotHappenException();
6681: }
6682: $traitScope = $scope->enterTrait($traitReflection);
6683: $nodeCallback(new InTraitNode($node, $traitReflection, $scope->getClassReflection()), $traitScope);
6684: $this->processStmtNodes($node, $stmts, $traitScope, $nodeCallback, StatementContext::createTopLevel());
6685: return;
6686: }
6687: if ($node instanceof Node\Stmt\ClassLike) {
6688: return;
6689: }
6690: if ($node instanceof Node\FunctionLike) {
6691: return;
6692: }
6693: foreach ($node->getSubNodeNames() as $subNodeName) {
6694: $subNode = $node->{$subNodeName};
6695: $this->processNodesForTraitUse($subNode, $traitReflection, $scope, $adaptations, $nodeCallback);
6696: }
6697: } elseif (is_array($node)) {
6698: foreach ($node as $subNode) {
6699: $this->processNodesForTraitUse($subNode, $traitReflection, $scope, $adaptations, $nodeCallback);
6700: }
6701: }
6702: }
6703:
6704: private function processCalledMethod(MethodReflection $methodReflection): ?MutatingScope
6705: {
6706: $declaringClass = $methodReflection->getDeclaringClass();
6707: if ($declaringClass->isAnonymous()) {
6708: return null;
6709: }
6710: if ($declaringClass->getFileName() === null) {
6711: return null;
6712: }
6713:
6714: $stackName = sprintf('%s::%s', $declaringClass->getName(), $methodReflection->getName());
6715: if (array_key_exists($stackName, $this->calledMethodResults)) {
6716: return $this->calledMethodResults[$stackName];
6717: }
6718:
6719: if (array_key_exists($stackName, $this->calledMethodStack)) {
6720: return null;
6721: }
6722:
6723: if (count($this->calledMethodStack) > 0) {
6724: return null;
6725: }
6726:
6727: $this->calledMethodStack[$stackName] = true;
6728:
6729: $fileName = $this->fileHelper->normalizePath($declaringClass->getFileName());
6730: if (!isset($this->analysedFiles[$fileName])) {
6731: return null;
6732: }
6733: $parserNodes = $this->parser->parseFile($fileName);
6734:
6735: $returnStatement = null;
6736: $this->processNodesForCalledMethod($parserNodes, $fileName, $methodReflection, static function (Node $node, Scope $scope) use ($methodReflection, &$returnStatement): void {
6737: if (!$node instanceof MethodReturnStatementsNode) {
6738: return;
6739: }
6740:
6741: if ($node->getClassReflection()->getName() !== $methodReflection->getDeclaringClass()->getName()) {
6742: return;
6743: }
6744:
6745: if ($returnStatement !== null) {
6746: return;
6747: }
6748:
6749: $returnStatement = $node;
6750: });
6751:
6752: $calledMethodEndScope = null;
6753: if ($returnStatement !== null) {
6754: foreach ($returnStatement->getExecutionEnds() as $executionEnd) {
6755: $statementResult = $executionEnd->getStatementResult();
6756: $endNode = $executionEnd->getNode();
6757: if ($endNode instanceof Node\Stmt\Expression) {
6758: $exprType = $statementResult->getScope()->getType($endNode->expr);
6759: if ($exprType instanceof NeverType && $exprType->isExplicit()) {
6760: continue;
6761: }
6762: }
6763: if ($calledMethodEndScope === null) {
6764: $calledMethodEndScope = $statementResult->getScope();
6765: continue;
6766: }
6767:
6768: $calledMethodEndScope = $calledMethodEndScope->mergeWith($statementResult->getScope());
6769: }
6770: foreach ($returnStatement->getReturnStatements() as $statement) {
6771: if ($calledMethodEndScope === null) {
6772: $calledMethodEndScope = $statement->getScope();
6773: continue;
6774: }
6775:
6776: $calledMethodEndScope = $calledMethodEndScope->mergeWith($statement->getScope());
6777: }
6778: }
6779:
6780: unset($this->calledMethodStack[$stackName]);
6781:
6782: $this->calledMethodResults[$stackName] = $calledMethodEndScope;
6783:
6784: return $calledMethodEndScope;
6785: }
6786:
6787: /**
6788: * @param Node[]|Node|scalar|null $node
6789: * @param callable(Node $node, Scope $scope): void $nodeCallback
6790: */
6791: private function processNodesForCalledMethod($node, string $fileName, MethodReflection $methodReflection, callable $nodeCallback): void
6792: {
6793: if ($node instanceof Node) {
6794: $declaringClass = $methodReflection->getDeclaringClass();
6795: if (
6796: $node instanceof Node\Stmt\Class_
6797: && isset($node->namespacedName)
6798: && $declaringClass->getName() === (string) $node->namespacedName
6799: && $declaringClass->getNativeReflection()->getStartLine() === $node->getStartLine()
6800: ) {
6801:
6802: $stmts = $node->stmts;
6803: foreach ($stmts as $stmt) {
6804: if (!$stmt instanceof Node\Stmt\ClassMethod) {
6805: continue;
6806: }
6807:
6808: if ($stmt->name->toString() !== $methodReflection->getName()) {
6809: continue;
6810: }
6811:
6812: if ($stmt->getEndLine() - $stmt->getStartLine() > 50) {
6813: continue;
6814: }
6815:
6816: $scope = $this->scopeFactory->create(ScopeContext::create($fileName))->enterClass($declaringClass);
6817: $this->processStmtNode($stmt, $scope, $nodeCallback, StatementContext::createTopLevel());
6818: }
6819: return;
6820: }
6821: if ($node instanceof Node\Stmt\ClassLike) {
6822: return;
6823: }
6824: if ($node instanceof Node\FunctionLike) {
6825: return;
6826: }
6827: foreach ($node->getSubNodeNames() as $subNodeName) {
6828: $subNode = $node->{$subNodeName};
6829: $this->processNodesForCalledMethod($subNode, $fileName, $methodReflection, $nodeCallback);
6830: }
6831: } elseif (is_array($node)) {
6832: foreach ($node as $subNode) {
6833: $this->processNodesForCalledMethod($subNode, $fileName, $methodReflection, $nodeCallback);
6834: }
6835: }
6836: }
6837:
6838: /**
6839: * @return array{TemplateTypeMap, array<string, Type>, array<string, bool>, array<string, Type>, ?Type, ?Type, ?string, bool, bool, bool, bool|null, bool, bool, string|null, Assertions, ?Type, array<string, Type>, array<(string|int), VarTag>, bool}
6840: */
6841: public function getPhpDocs(Scope $scope, Node\FunctionLike|Node\Stmt\Property $node): array
6842: {
6843: $templateTypeMap = TemplateTypeMap::createEmpty();
6844: $phpDocParameterTypes = [];
6845: $phpDocImmediatelyInvokedCallableParameters = [];
6846: $phpDocClosureThisTypeParameters = [];
6847: $phpDocReturnType = null;
6848: $phpDocThrowType = null;
6849: $deprecatedDescription = null;
6850: $isDeprecated = false;
6851: $isInternal = false;
6852: $isFinal = false;
6853: $isPure = null;
6854: $isAllowedPrivateMutation = false;
6855: $acceptsNamedArguments = true;
6856: $isReadOnly = $scope->isInClass() && $scope->getClassReflection()->isImmutable();
6857: $asserts = Assertions::createEmpty();
6858: $selfOutType = null;
6859: $docComment = $node->getDocComment() !== null
6860: ? $node->getDocComment()->getText()
6861: : null;
6862:
6863: $file = $scope->getFile();
6864: $class = $scope->isInClass() ? $scope->getClassReflection()->getName() : null;
6865: $trait = $scope->isInTrait() ? $scope->getTraitReflection()->getName() : null;
6866: $resolvedPhpDoc = null;
6867: $functionName = null;
6868: $phpDocParameterOutTypes = [];
6869:
6870: if ($node instanceof Node\Stmt\ClassMethod) {
6871: if (!$scope->isInClass()) {
6872: throw new ShouldNotHappenException();
6873: }
6874: $functionName = $node->name->name;
6875: $positionalParameterNames = array_map(static function (Node\Param $param): string {
6876: if (!$param->var instanceof Variable || !is_string($param->var->name)) {
6877: throw new ShouldNotHappenException();
6878: }
6879:
6880: return $param->var->name;
6881: }, $node->getParams());
6882: $resolvedPhpDoc = $this->phpDocInheritanceResolver->resolvePhpDocForMethod(
6883: $docComment,
6884: $file,
6885: $scope->getClassReflection(),
6886: $trait,
6887: $node->name->name,
6888: $positionalParameterNames,
6889: );
6890:
6891: if ($node->name->toLowerString() === '__construct') {
6892: foreach ($node->params as $param) {
6893: if ($param->flags === 0) {
6894: continue;
6895: }
6896:
6897: if ($param->getDocComment() === null) {
6898: continue;
6899: }
6900:
6901: if (
6902: !$param->var instanceof Variable
6903: || !is_string($param->var->name)
6904: ) {
6905: throw new ShouldNotHappenException();
6906: }
6907:
6908: $paramPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
6909: $file,
6910: $class,
6911: $trait,
6912: '__construct',
6913: $param->getDocComment()->getText(),
6914: );
6915: $varTags = $paramPhpDoc->getVarTags();
6916: if (isset($varTags[0]) && count($varTags) === 1) {
6917: $phpDocType = $varTags[0]->getType();
6918: } elseif (isset($varTags[$param->var->name])) {
6919: $phpDocType = $varTags[$param->var->name]->getType();
6920: } else {
6921: continue;
6922: }
6923:
6924: $phpDocParameterTypes[$param->var->name] = $phpDocType;
6925: }
6926: }
6927: } elseif ($node instanceof Node\Stmt\Function_) {
6928: $functionName = trim($scope->getNamespace() . '\\' . $node->name->name, '\\');
6929: } elseif ($node instanceof Node\PropertyHook) {
6930: $propertyName = $node->getAttribute('propertyName');
6931: if ($propertyName !== null) {
6932: $functionName = sprintf('$%s::%s', $propertyName, $node->name->toString());
6933: }
6934: }
6935:
6936: if ($docComment !== null && $resolvedPhpDoc === null) {
6937: $resolvedPhpDoc = $this->fileTypeMapper->getResolvedPhpDoc(
6938: $file,
6939: $class,
6940: $trait,
6941: $functionName,
6942: $docComment,
6943: );
6944: }
6945:
6946: $varTags = [];
6947: if ($resolvedPhpDoc !== null) {
6948: $templateTypeMap = $resolvedPhpDoc->getTemplateTypeMap();
6949: $phpDocImmediatelyInvokedCallableParameters = $resolvedPhpDoc->getParamsImmediatelyInvokedCallable();
6950: foreach ($resolvedPhpDoc->getParamTags() as $paramName => $paramTag) {
6951: if (array_key_exists($paramName, $phpDocParameterTypes)) {
6952: continue;
6953: }
6954: $paramType = $paramTag->getType();
6955: if ($scope->isInClass()) {
6956: $paramType = $this->transformStaticType($scope->getClassReflection(), $paramType);
6957: }
6958: $phpDocParameterTypes[$paramName] = $paramType;
6959: }
6960: foreach ($resolvedPhpDoc->getParamClosureThisTags() as $paramName => $paramClosureThisTag) {
6961: if (array_key_exists($paramName, $phpDocClosureThisTypeParameters)) {
6962: continue;
6963: }
6964: $paramClosureThisType = $paramClosureThisTag->getType();
6965: if ($scope->isInClass()) {
6966: $paramClosureThisType = $this->transformStaticType($scope->getClassReflection(), $paramClosureThisType);
6967: }
6968: $phpDocClosureThisTypeParameters[$paramName] = $paramClosureThisType;
6969: }
6970:
6971: foreach ($resolvedPhpDoc->getParamOutTags() as $paramName => $paramOutTag) {
6972: $phpDocParameterOutTypes[$paramName] = $paramOutTag->getType();
6973: }
6974: if ($node instanceof Node\FunctionLike) {
6975: $nativeReturnType = $scope->getFunctionType($node->getReturnType(), false, false);
6976: $phpDocReturnType = $this->getPhpDocReturnType($resolvedPhpDoc, $nativeReturnType);
6977: if ($phpDocReturnType !== null && $scope->isInClass()) {
6978: $phpDocReturnType = $this->transformStaticType($scope->getClassReflection(), $phpDocReturnType);
6979: }
6980: }
6981: $phpDocThrowType = $resolvedPhpDoc->getThrowsTag() !== null ? $resolvedPhpDoc->getThrowsTag()->getType() : null;
6982: $deprecatedDescription = $resolvedPhpDoc->getDeprecatedTag() !== null ? $resolvedPhpDoc->getDeprecatedTag()->getMessage() : null;
6983: $isDeprecated = $resolvedPhpDoc->isDeprecated();
6984: $isInternal = $resolvedPhpDoc->isInternal();
6985: $isFinal = $resolvedPhpDoc->isFinal();
6986: $isPure = $resolvedPhpDoc->isPure();
6987: $isAllowedPrivateMutation = $resolvedPhpDoc->isAllowedPrivateMutation();
6988: $acceptsNamedArguments = $resolvedPhpDoc->acceptsNamedArguments();
6989: if ($acceptsNamedArguments && $scope->isInClass()) {
6990: $acceptsNamedArguments = $scope->getClassReflection()->acceptsNamedArguments();
6991: }
6992: $isReadOnly = $isReadOnly || $resolvedPhpDoc->isReadOnly();
6993: $asserts = Assertions::createFromResolvedPhpDocBlock($resolvedPhpDoc);
6994: $selfOutType = $resolvedPhpDoc->getSelfOutTag() !== null ? $resolvedPhpDoc->getSelfOutTag()->getType() : null;
6995: $varTags = $resolvedPhpDoc->getVarTags();
6996: }
6997:
6998: return [$templateTypeMap, $phpDocParameterTypes, $phpDocImmediatelyInvokedCallableParameters, $phpDocClosureThisTypeParameters, $phpDocReturnType, $phpDocThrowType, $deprecatedDescription, $isDeprecated, $isInternal, $isFinal, $isPure, $acceptsNamedArguments, $isReadOnly, $docComment, $asserts, $selfOutType, $phpDocParameterOutTypes, $varTags, $isAllowedPrivateMutation];
6999: }
7000:
7001: private function transformStaticType(ClassReflection $declaringClass, Type $type): Type
7002: {
7003: return TypeTraverser::map($type, static function (Type $type, callable $traverse) use ($declaringClass): Type {
7004: if ($type instanceof StaticType) {
7005: $changedType = $type->changeBaseClass($declaringClass);
7006: if ($declaringClass->isFinal() && !$type instanceof ThisType) {
7007: $changedType = $changedType->getStaticObjectType();
7008: }
7009: return $traverse($changedType);
7010: }
7011:
7012: return $traverse($type);
7013: });
7014: }
7015:
7016: private function getPhpDocReturnType(ResolvedPhpDocBlock $resolvedPhpDoc, Type $nativeReturnType): ?Type
7017: {
7018: $returnTag = $resolvedPhpDoc->getReturnTag();
7019:
7020: if ($returnTag === null) {
7021: return null;
7022: }
7023:
7024: $phpDocReturnType = $returnTag->getType();
7025:
7026: if ($returnTag->isExplicit()) {
7027: return $phpDocReturnType;
7028: }
7029:
7030: if ($nativeReturnType->isSuperTypeOf(TemplateTypeHelper::resolveToBounds($phpDocReturnType))->yes()) {
7031: return $phpDocReturnType;
7032: }
7033:
7034: return null;
7035: }
7036:
7037: /**
7038: * @param array<Node> $nodes
7039: * @return list<Node\Stmt>
7040: */
7041: private function getNextUnreachableStatements(array $nodes, bool $earlyBinding): array
7042: {
7043: $stmts = [];
7044: $isPassedUnreachableStatement = false;
7045: foreach ($nodes as $node) {
7046: if ($earlyBinding && ($node instanceof Node\Stmt\Function_ || $node instanceof Node\Stmt\ClassLike || $node instanceof Node\Stmt\HaltCompiler)) {
7047: continue;
7048: }
7049: if ($isPassedUnreachableStatement && $node instanceof Node\Stmt) {
7050: $stmts[] = $node;
7051: continue;
7052: }
7053: if ($node instanceof Node\Stmt\Nop || $node instanceof Node\Stmt\InlineHTML) {
7054: continue;
7055: }
7056: if (!$node instanceof Node\Stmt) {
7057: continue;
7058: }
7059: $stmts[] = $node;
7060: $isPassedUnreachableStatement = true;
7061: }
7062: return $stmts;
7063: }
7064:
7065: /**
7066: * @param array<Expr> $conditions
7067: */
7068: public function getFilteringExprForMatchArm(Expr\Match_ $expr, array $conditions): BinaryOp\Identical|FuncCall
7069: {
7070: if (count($conditions) === 1) {
7071: return new BinaryOp\Identical($expr->cond, $conditions[0]);
7072: }
7073:
7074: $items = [];
7075: foreach ($conditions as $filteringExpr) {
7076: $items[] = new Node\ArrayItem($filteringExpr);
7077: }
7078:
7079: return new FuncCall(
7080: new Name\FullyQualified('in_array'),
7081: [
7082: new Arg($expr->cond),
7083: new Arg(new Array_($items)),
7084: new Arg(new ConstFetch(new Name\FullyQualified('true'))),
7085: ],
7086: );
7087: }
7088:
7089: }
7090: