1: <?php declare(strict_types = 1);
2:
3: namespace PHPStan\Type;
4:
5: use PHPStan\Php\PhpVersion;
6: use PHPStan\PhpDocParser\Ast\Type\TypeNode;
7: use PHPStan\Reflection\ClassMemberAccessAnswerer;
8: use PHPStan\Reflection\ClassReflection;
9: use PHPStan\Reflection\ConstantReflection;
10: use PHPStan\Reflection\ExtendedMethodReflection;
11: use PHPStan\Reflection\ParametersAcceptor;
12: use PHPStan\Reflection\PropertyReflection;
13: use PHPStan\Reflection\Type\UnresolvedMethodPrototypeReflection;
14: use PHPStan\Reflection\Type\UnresolvedPropertyPrototypeReflection;
15: use PHPStan\TrinaryLogic;
16: use PHPStan\Type\Constant\ConstantArrayType;
17: use PHPStan\Type\Constant\ConstantStringType;
18: use PHPStan\Type\Enum\EnumCaseObjectType;
19: use PHPStan\Type\Generic\TemplateTypeMap;
20: use PHPStan\Type\Generic\TemplateTypeReference;
21: use PHPStan\Type\Generic\TemplateTypeVariance;
22:
23: /**
24: * @api
25: * @see https://phpstan.org/developing-extensions/type-system
26: */
27: interface Type
28: {
29:
30: /**
31: * @return string[]
32: */
33: public function getReferencedClasses(): array;
34:
35: /** @return list<string> */
36: public function getObjectClassNames(): array;
37:
38: /**
39: * @return list<ClassReflection>
40: */
41: public function getObjectClassReflections(): array;
42:
43: /**
44: * Returns object type Foo for class-string<Foo> and 'Foo' (if Foo is a valid class).
45: */
46: public function getClassStringObjectType(): Type;
47:
48: /**
49: * Returns object type Foo for class-string<Foo>, 'Foo' (if Foo is a valid class),
50: * and object type Foo.
51: */
52: public function getObjectTypeOrClassStringObjectType(): Type;
53:
54: public function isObject(): TrinaryLogic;
55:
56: public function isEnum(): TrinaryLogic;
57:
58: /** @return list<ArrayType> */
59: public function getArrays(): array;
60:
61: /** @return list<ConstantArrayType> */
62: public function getConstantArrays(): array;
63:
64: /** @return list<ConstantStringType> */
65: public function getConstantStrings(): array;
66:
67: public function accepts(Type $type, bool $strictTypes): TrinaryLogic;
68:
69: /**
70: * This is like accepts() but gives reasons
71: * why the type was not/might not be accepted in some non-intuitive scenarios.
72: *
73: * In PHPStan 2.0 this method will be removed and the return type of accepts()
74: * will change to AcceptsResult.
75: */
76: public function acceptsWithReason(Type $type, bool $strictTypes): AcceptsResult;
77:
78: public function isSuperTypeOf(Type $type): TrinaryLogic;
79:
80: public function equals(Type $type): bool;
81:
82: public function describe(VerbosityLevel $level): string;
83:
84: public function canAccessProperties(): TrinaryLogic;
85:
86: public function hasProperty(string $propertyName): TrinaryLogic;
87:
88: public function getProperty(string $propertyName, ClassMemberAccessAnswerer $scope): PropertyReflection;
89:
90: public function getUnresolvedPropertyPrototype(string $propertyName, ClassMemberAccessAnswerer $scope): UnresolvedPropertyPrototypeReflection;
91:
92: public function canCallMethods(): TrinaryLogic;
93:
94: public function hasMethod(string $methodName): TrinaryLogic;
95:
96: public function getMethod(string $methodName, ClassMemberAccessAnswerer $scope): ExtendedMethodReflection;
97:
98: public function getUnresolvedMethodPrototype(string $methodName, ClassMemberAccessAnswerer $scope): UnresolvedMethodPrototypeReflection;
99:
100: public function canAccessConstants(): TrinaryLogic;
101:
102: public function hasConstant(string $constantName): TrinaryLogic;
103:
104: public function getConstant(string $constantName): ConstantReflection;
105:
106: public function isIterable(): TrinaryLogic;
107:
108: public function isIterableAtLeastOnce(): TrinaryLogic;
109:
110: public function getArraySize(): Type;
111:
112: public function getIterableKeyType(): Type;
113:
114: public function getFirstIterableKeyType(): Type;
115:
116: public function getLastIterableKeyType(): Type;
117:
118: public function getIterableValueType(): Type;
119:
120: public function getFirstIterableValueType(): Type;
121:
122: public function getLastIterableValueType(): Type;
123:
124: public function isArray(): TrinaryLogic;
125:
126: public function isConstantArray(): TrinaryLogic;
127:
128: public function isOversizedArray(): TrinaryLogic;
129:
130: public function isList(): TrinaryLogic;
131:
132: public function isOffsetAccessible(): TrinaryLogic;
133:
134: public function hasOffsetValueType(Type $offsetType): TrinaryLogic;
135:
136: public function getOffsetValueType(Type $offsetType): Type;
137:
138: public function setOffsetValueType(?Type $offsetType, Type $valueType, bool $unionValues = true): Type;
139:
140: public function setExistingOffsetValueType(Type $offsetType, Type $valueType): Type;
141:
142: public function unsetOffset(Type $offsetType): Type;
143:
144: public function getKeysArray(): Type;
145:
146: public function getValuesArray(): Type;
147:
148: public function fillKeysArray(Type $valueType): Type;
149:
150: public function flipArray(): Type;
151:
152: public function intersectKeyArray(Type $otherArraysType): Type;
153:
154: public function popArray(): Type;
155:
156: public function searchArray(Type $needleType): Type;
157:
158: public function shiftArray(): Type;
159:
160: public function shuffleArray(): Type;
161:
162: /**
163: * @return list<EnumCaseObjectType>
164: */
165: public function getEnumCases(): array;
166:
167: /**
168: * Returns a list of finite values.
169: *
170: * Examples:
171: *
172: * - for bool: [true, false]
173: * - for int<0, 3>: [0, 1, 2, 3]
174: * - for enums: list of enum cases
175: * - for scalars: the scalar itself
176: *
177: * For infinite types it returns an empty array.
178: *
179: * @return list<Type>
180: */
181: public function getFiniteTypes(): array;
182:
183: public function exponentiate(Type $exponent): Type;
184:
185: public function isCallable(): TrinaryLogic;
186:
187: /**
188: * @return ParametersAcceptor[]
189: */
190: public function getCallableParametersAcceptors(ClassMemberAccessAnswerer $scope): array;
191:
192: public function isCloneable(): TrinaryLogic;
193:
194: public function toBoolean(): BooleanType;
195:
196: public function toNumber(): Type;
197:
198: public function toInteger(): Type;
199:
200: public function toFloat(): Type;
201:
202: public function toString(): Type;
203:
204: public function toArray(): Type;
205:
206: public function toArrayKey(): Type;
207:
208: public function isSmallerThan(Type $otherType): TrinaryLogic;
209:
210: public function isSmallerThanOrEqual(Type $otherType): TrinaryLogic;
211:
212: /**
213: * Is Type of a known constant value? Includes literal strings, integers, floats, true, false, null, and array shapes.
214: */
215: public function isConstantValue(): TrinaryLogic;
216:
217: /**
218: * Is Type of a known constant scalar value? Includes literal strings, integers, floats, true, false, and null.
219: */
220: public function isConstantScalarValue(): TrinaryLogic;
221:
222: /**
223: * @return list<ConstantScalarType>
224: */
225: public function getConstantScalarTypes(): array;
226:
227: /**
228: * @return list<int|float|string|bool|null>
229: */
230: public function getConstantScalarValues(): array;
231:
232: public function isNull(): TrinaryLogic;
233:
234: public function isTrue(): TrinaryLogic;
235:
236: public function isFalse(): TrinaryLogic;
237:
238: public function isBoolean(): TrinaryLogic;
239:
240: public function isFloat(): TrinaryLogic;
241:
242: public function isInteger(): TrinaryLogic;
243:
244: public function isString(): TrinaryLogic;
245:
246: public function isNumericString(): TrinaryLogic;
247:
248: public function isNonEmptyString(): TrinaryLogic;
249:
250: public function isNonFalsyString(): TrinaryLogic;
251:
252: public function isLiteralString(): TrinaryLogic;
253:
254: public function isClassStringType(): TrinaryLogic;
255:
256: public function isVoid(): TrinaryLogic;
257:
258: public function isScalar(): TrinaryLogic;
259:
260: public function looseCompare(Type $type, PhpVersion $phpVersion): BooleanType;
261:
262: public function getSmallerType(): Type;
263:
264: public function getSmallerOrEqualType(): Type;
265:
266: public function getGreaterType(): Type;
267:
268: public function getGreaterOrEqualType(): Type;
269:
270: /**
271: * Returns actual template type for a given object.
272: *
273: * Example:
274: *
275: * @-template T
276: * class Foo {}
277: *
278: * // $fooType is Foo<int>
279: * $t = $fooType->getTemplateType(Foo::class, 'T');
280: * $t->isInteger(); // yes
281: *
282: * Returns ErrorType in case of a missing type.
283: *
284: * @param class-string $ancestorClassName
285: */
286: public function getTemplateType(string $ancestorClassName, string $templateTypeName): Type;
287:
288: /**
289: * Infers template types
290: *
291: * Infers the real Type of the TemplateTypes found in $this, based on
292: * the received Type.
293: */
294: public function inferTemplateTypes(Type $receivedType): TemplateTypeMap;
295:
296: /**
297: * Returns the template types referenced by this Type, recursively
298: *
299: * The return value is a list of TemplateTypeReferences, who contain the
300: * referenced template type as well as the variance position in which it was
301: * found.
302: *
303: * For example, calling this on array<Foo<T>,Bar> (with T a template type)
304: * will return one TemplateTypeReference for the type T.
305: *
306: * @param TemplateTypeVariance $positionVariance The variance position in
307: * which the receiver type was
308: * found.
309: *
310: * @return TemplateTypeReference[]
311: */
312: public function getReferencedTemplateTypes(TemplateTypeVariance $positionVariance): array;
313:
314: /**
315: * Traverses inner types
316: *
317: * Returns a new instance with all inner types mapped through $cb. Might
318: * return the same instance if inner types did not change.
319: *
320: * @param callable(Type):Type $cb
321: */
322: public function traverse(callable $cb): Type;
323:
324: /**
325: * Traverses inner types while keeping the same context in another type.
326: *
327: * @param callable(Type $left, Type $right): Type $cb
328: */
329: public function traverseSimultaneously(Type $right, callable $cb): Type;
330:
331: public function toPhpDocNode(): TypeNode;
332:
333: /**
334: * Return the difference with another type, or null if it cannot be represented.
335: *
336: * @see TypeCombinator::remove()
337: */
338: public function tryRemove(Type $typeToRemove): ?Type;
339:
340: public function generalize(GeneralizePrecision $precision): Type;
341:
342: /**
343: * @param mixed[] $properties
344: */
345: public static function __set_state(array $properties): self;
346:
347: }
348: