#15074

Committed 13 Jan 2026 01:25PM UTC coverage: 86.973% (-0.006%) from 86.979%

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Merge bbd1becd0 into 2ea4d2108

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61.02

/src/types/IntersectionType.ts

import type { GetTypeOptions, TypeCompatibilityData } from '../interfaces';
import { isDynamicType, isIntersectionType, isObjectType, isTypedFunctionType } from '../astUtils/reflection';
import { BscType } from './BscType';
import { IntersectionWithDefaultDynamicReferenceType, ReferenceType } from './ReferenceType';
import { addAssociatedTypesTableAsSiblingToMemberTable, getAllTypesFromCompoundType, isEnumTypeCompatible, isTypeWithPotentialDefaultDynamicMember, joinTypesString, reduceTypesForIntersectionType } from './helpers';
import { BscTypeKind } from './BscTypeKind';
import type { TypeCacheEntry } from '../SymbolTable';
import { SymbolTable } from '../SymbolTable';
import { SymbolTypeFlag } from '../SymbolTypeFlag';
import { BuiltInInterfaceAdder } from './BuiltInInterfaceAdder';
import { util } from '../util';
import { DynamicType } from './DynamicType';

export function intersectionTypeFactory(types: BscType[]) {
    return new IntersectionType(types);
}

export class IntersectionType extends BscType {
    constructor(
        public types: BscType[]
    ) {
        super(joinTypesString(types, 'and', BscTypeKind.IntersectionType));
        this.callFuncAssociatedTypesTable = new SymbolTable(`Intersection: CallFuncAssociatedTypes`);
    }

    public readonly kind = BscTypeKind.IntersectionType;

    public readonly callFuncAssociatedTypesTable: SymbolTable;

    public addType(type: BscType) {
        this.types.push(type);
    }

    isResolvable(): boolean {
        for (const type of this.types) {
            // resolvable if any inner type is resolvable
            if (type.isResolvable()) {
                return true;
            }
        }
        return false;
    }

    private getMemberTypeFromInnerTypes(name: string, options: GetTypeOptions): BscType {
        const typeFromMembers = this.types.map((innerType) => {
            return innerType?.getMemberType(name, { ...options, ignoreDefaultDynamicMembers: true });
        });
        let filteredTypes = reduceTypesForIntersectionType(typeFromMembers.map(t => t).filter(t => t !== undefined));

        if (filteredTypes.length === 0 && this.types.some(isTypeWithPotentialDefaultDynamicMember)) {
            const typesFromMembersWithDynamicAA = this.types.map((innerType) => {
                return innerType?.getMemberType(name, options);
            });
            filteredTypes = reduceTypesForIntersectionType(typesFromMembersWithDynamicAA.map(t => t).filter(t => t !== undefined));
        }
        if (filteredTypes.length === 0) {
            return undefined;
        } else if (filteredTypes.length === 1) {
            return filteredTypes[0];
        }
        return new IntersectionType(filteredTypes);
    }

    private getCallFuncFromInnerTypes(name: string, options: GetTypeOptions): BscType {
        const typeFromMembers = reduceTypesForIntersectionType(this.types.map((innerType) => innerType?.getCallFuncType(name, options)).filter(t => t !== undefined));

        if (typeFromMembers.length === 0) {
            return undefined;
        } else if (typeFromMembers.length === 1) {
            return typeFromMembers[0];
        }
        return new IntersectionType(typeFromMembers);
    }

    getMemberType(name: string, options: GetTypeOptions) {
        const innerTypesMemberType = this.getMemberTypeFromInnerTypes(name, options);
        if (!innerTypesMemberType) {
            // We don't have any members of any inner types that match
            // so instead, create reference type that will
            return new ReferenceType(name, name, options.flags, () => {
                return {
                    name: `IntersectionType MemberTable: '${this.__identifier}'`,
                    getSymbolType: (innerName: string, innerOptions: GetTypeOptions) => {
                        const referenceTypeInnerMemberTypes = this.getMemberTypeFromInnerTypes(name, options);
                        if (!referenceTypeInnerMemberTypes) {
                            if (this.hasMemberTypeWithDefaultDynamicMember && !innerOptions.ignoreDefaultDynamicMembers) {
                                return DynamicType.instance;
                            }
                            return undefined;
                        }
                        return referenceTypeInnerMemberTypes;
                    },
                    setCachedType: (innerName: string, innerCacheEntry: TypeCacheEntry, innerOptions: GetTypeOptions) => {
                        // TODO: is this even cachable? This is a NO-OP for now, and it shouldn't hurt anything
                    },
                    addSibling: (symbolTable: SymbolTable) => {
                        // TODO: I don't know what this means in this context?
                    }
                };
            });
        }
        if (!innerTypesMemberType?.isResolvable()) {
            const shouldCreateDynamicAAMember = this.hasMemberTypeWithDefaultDynamicMember && !options.ignoreDefaultDynamicMembers;
            if (shouldCreateDynamicAAMember) {
                return new IntersectionWithDefaultDynamicReferenceType(innerTypesMemberType);
            }
        }
        return innerTypesMemberType;
    }

    getCallFuncType(name: string, options: GetTypeOptions) {
        const resultCallFuncType = this.getCallFuncFromInnerTypes(name, options);
        if (!resultCallFuncType) {
            // We don't have any members of any inner types that match
            // so instead, create reference type that will
            return new ReferenceType(name, name, options.flags, () => {
                return {
                    name: `IntersectionType CallFunc MemberTable: '${this.__identifier}'`,
                    getSymbolType: (innerName: string, innerOptions: GetTypeOptions) => {
                        const referenceTypeInnerMemberType = this.getCallFuncFromInnerTypes(name, options);
                        if (!referenceTypeInnerMemberType) {
                            if (this.hasMemberTypeWithDefaultDynamicMember && !innerOptions.ignoreDefaultDynamicMembers) {
                                return DynamicType.instance;
                            }
                        }
                        return referenceTypeInnerMemberType;
                    },
                    setCachedType: (innerName: string, innerCacheEntry: TypeCacheEntry, innerOptions: GetTypeOptions) => {
                        // TODO: is this even cachable? This is a NO-OP for now, and it shouldn't hurt anything
                    },
                    addSibling: (symbolTable: SymbolTable) => {
                        // TODO: I don't know what this means in this context?
                    }
                };
            });
        }

        if (!resultCallFuncType?.isResolvable()) {
            const shouldCreateDynamicAAMember = this.hasMemberTypeWithDefaultDynamicMember && !options.ignoreDefaultDynamicMembers;
            if (shouldCreateDynamicAAMember) {
                return new IntersectionWithDefaultDynamicReferenceType(resultCallFuncType);
            }
        }

        if (isTypedFunctionType(resultCallFuncType)) {
            const typesToCheck = [...resultCallFuncType.params.map(p => p.type), resultCallFuncType.returnType];

            for (const type of typesToCheck) {
                addAssociatedTypesTableAsSiblingToMemberTable(type, this.callFuncAssociatedTypesTable, SymbolTypeFlag.runtime);
            }
        }
        return resultCallFuncType;
    }

    get returnType() {
        return util.getReturnTypeOfIntersectionOfFunctions(this);
    }


    isTypeCompatible(targetType: BscType, data?: TypeCompatibilityData): boolean {
        if (isDynamicType(targetType) || isObjectType(targetType) || this === targetType) {
            return true;
        }
        if (isEnumTypeCompatible(this, targetType, data)) {
            return true;
        }
        if (isIntersectionType(targetType)) {
            // check if this all the types of this type are in the target (eg, target is a super set of this types)
            let allMembersSatisfied = true;
            for (const memberType of this.types) {
                let foundCompatibleInnerType = false;
                for (const targetInnerType of targetType.types) {
                    if (memberType.isTypeCompatible(targetInnerType, data)) {
                        foundCompatibleInnerType = true;
                        break;
                    }
                }
                if (!foundCompatibleInnerType) {
                    allMembersSatisfied = false;
                }
            }
            return allMembersSatisfied;
        }
        let foundCompatibleInnerType = true;
        for (const innerType of this.types) {
            if (!innerType.isTypeCompatible(targetType, data)) {
                foundCompatibleInnerType = false;
            }
        }

        return foundCompatibleInnerType;
    }
    toString(): string {
        return joinTypesString(this.types, 'and', BscTypeKind.IntersectionType);
    }

    /**
     * Used for transpilation
     */
    toTypeString(): string {
        const uniqueTypeStrings = new Set<string>(getAllTypesFromCompoundType(this).map(t => t.toTypeString()));

        if (uniqueTypeStrings.size === 1) {
            return uniqueTypeStrings.values().next().value;
        }
        return 'dynamic';
    }

    checkAllMemberTypes(predicate: (BscType) => boolean) {
        return this.types.reduce((acc, type) => {
            return acc && predicate(type);
        }, true);
    }

    isEqual(targetType: BscType): boolean {
        if (!isIntersectionType(targetType)) {
            return false;
        }
        if (this === targetType) {
            return true;
        }
        for (const type of this.types) {
            let foundMatch = false;
            for (const targetTypeInner of targetType.types) {
                if (type.isEqual(targetTypeInner)) {
                    foundMatch = true;
                    break;
                }
            }
            if (!foundMatch) {
                return false;
            }
        }
        return true;
    }

    getMemberTable(): SymbolTable {
        const intersectionTable = new SymbolTable(this.__identifier + ' IntersectionTable');

        for (const type of this.types) {
            type.addBuiltInInterfaces();
            for (const symbol of type.getMemberTable().getAllSymbols(SymbolTypeFlag.runtime)) {
                const foundType = this.getMemberTypeFromInnerTypes(symbol.name, { flags: SymbolTypeFlag.runtime });
                intersectionTable.addSymbol(symbol.name, {}, foundType, SymbolTypeFlag.runtime);
            }
        }
        const firstType = this.types[0];
        if (!firstType) {
            return intersectionTable;
        }
        firstType.addBuiltInInterfaces();
        for (const symbol of firstType.getMemberTable().getAllSymbols(SymbolTypeFlag.runtime)) {
            const foundType = this.getMemberTypeFromInnerTypes(symbol.name, { flags: SymbolTypeFlag.runtime });
            intersectionTable.addSymbol(symbol.name, {}, foundType, SymbolTypeFlag.runtime);
        }
        return intersectionTable;
    }


    private _hasMemberTypeWithDefaultDynamicMember: boolean = undefined;
    get hasMemberTypeWithDefaultDynamicMember(): boolean {
        if (this._hasMemberTypeWithDefaultDynamicMember !== undefined) {
            return this._hasMemberTypeWithDefaultDynamicMember;
        }
        this._hasMemberTypeWithDefaultDynamicMember = false;

        for (const type of this.types) {
            if (isTypeWithPotentialDefaultDynamicMember(type)) {
                this._hasMemberTypeWithDefaultDynamicMember = true;
                break;
            }
        }
        return this._hasMemberTypeWithDefaultDynamicMember;
    }
}

BuiltInInterfaceAdder.intersectionTypeFactory = (types: BscType[]) => {
    return new IntersectionType(types);
};

1	import type { GetTypeOptions, TypeCompatibilityData } from '../interfaces';
2	import { isDynamicType, isIntersectionType, isObjectType, isTypedFunctionType } from '../astUtils/reflection';	1✔
3	import { BscType } from './BscType';	1✔
4	import { IntersectionWithDefaultDynamicReferenceType, ReferenceType } from './ReferenceType';	1✔
5	import { addAssociatedTypesTableAsSiblingToMemberTable, getAllTypesFromCompoundType, isEnumTypeCompatible, isTypeWithPotentialDefaultDynamicMember, joinTypesString, reduceTypesForIntersectionType } from './helpers';	1✔
6	import { BscTypeKind } from './BscTypeKind';	1✔
7	import type { TypeCacheEntry } from '../SymbolTable';
8	import { SymbolTable } from '../SymbolTable';	1✔
9	import { SymbolTypeFlag } from '../SymbolTypeFlag';	1✔
10	import { BuiltInInterfaceAdder } from './BuiltInInterfaceAdder';	1✔
11	import { util } from '../util';	1✔
12	import { DynamicType } from './DynamicType';	1✔
13
14	export function intersectionTypeFactory(types: BscType[]) {	1✔
NEW 15	return new IntersectionType(types);	×
16	}
17
18	export class IntersectionType extends BscType {	1✔
19	constructor(
20	public types: BscType[]	118✔
21	) {
22	super(joinTypesString(types, 'and', BscTypeKind.IntersectionType));	118✔
23	this.callFuncAssociatedTypesTable = new SymbolTable(`Intersection: CallFuncAssociatedTypes`);	118✔
24	}
25
26	public readonly kind = BscTypeKind.IntersectionType;	118✔
27
28	public readonly callFuncAssociatedTypesTable: SymbolTable;
29
30	public addType(type: BscType) {
NEW 31	this.types.push(type);	×
32	}
33
34	isResolvable(): boolean {
35	for (const type of this.types) {	78✔
36	// resolvable if any inner type is resolvable
37	if (type.isResolvable()) {	81✔
38	return true;	75✔
39	}
40	}
41	return false;	3✔
42	}
43
44	private getMemberTypeFromInnerTypes(name: string, options: GetTypeOptions): BscType {
45	const typeFromMembers = this.types.map((innerType) => {	330✔
46	return innerType?.getMemberType(name, { ...options, ignoreDefaultDynamicMembers: true });	660!
47	});
48	let filteredTypes = reduceTypesForIntersectionType(typeFromMembers.map(t => t).filter(t => t !== undefined));	660✔
49
50	if (filteredTypes.length === 0 && this.types.some(isTypeWithPotentialDefaultDynamicMember)) {	330!
NEW 51	const typesFromMembersWithDynamicAA = this.types.map((innerType) => {	×
NEW 52	return innerType?.getMemberType(name, options);	×
53	});
NEW 54	filteredTypes = reduceTypesForIntersectionType(typesFromMembersWithDynamicAA.map(t => t).filter(t => t !== undefined));	×
55	}
56	if (filteredTypes.length === 0) {	330✔
57	return undefined;	68✔
58	} else if (filteredTypes.length === 1) {	262✔
59	return filteredTypes[0];	259✔
60	}
61	return new IntersectionType(filteredTypes);	3✔
62	}
63
64	private getCallFuncFromInnerTypes(name: string, options: GetTypeOptions): BscType {
NEW 65	const typeFromMembers = reduceTypesForIntersectionType(this.types.map((innerType) => innerType?.getCallFuncType(name, options)).filter(t => t !== undefined));	×
66
NEW 67	if (typeFromMembers.length === 0) {	×
NEW 68	return undefined;	×
NEW 69	} else if (typeFromMembers.length === 1) {	×
NEW 70	return typeFromMembers[0];	×
71	}
NEW 72	return new IntersectionType(typeFromMembers);	×
73	}
74
75	getMemberType(name: string, options: GetTypeOptions) {
76	const innerTypesMemberType = this.getMemberTypeFromInnerTypes(name, options);	138✔
77	if (!innerTypesMemberType) {	138✔
78	// We don't have any members of any inner types that match
79	// so instead, create reference type that will
80	return new ReferenceType(name, name, options.flags, () => {	11✔
81	return {	106✔
82	name: `IntersectionType MemberTable: '${this.__identifier}'`,
83	getSymbolType: (innerName: string, innerOptions: GetTypeOptions) => {
84	const referenceTypeInnerMemberTypes = this.getMemberTypeFromInnerTypes(name, options);	106✔
85	if (!referenceTypeInnerMemberTypes) {	106✔
86	if (this.hasMemberTypeWithDefaultDynamicMember && !innerOptions.ignoreDefaultDynamicMembers) {	57!
NEW 87	return DynamicType.instance;	×
88	}
89	return undefined;	57✔
90	}
91	return referenceTypeInnerMemberTypes;	49✔
92	},
93	setCachedType: (innerName: string, innerCacheEntry: TypeCacheEntry, innerOptions: GetTypeOptions) => {
94	// TODO: is this even cachable? This is a NO-OP for now, and it shouldn't hurt anything
95	},
96	addSibling: (symbolTable: SymbolTable) => {
97	// TODO: I don't know what this means in this context?
98	}
99	};
100	});
101	}
102	if (!innerTypesMemberType?.isResolvable()) {	127!
103	const shouldCreateDynamicAAMember = this.hasMemberTypeWithDefaultDynamicMember && !options.ignoreDefaultDynamicMembers;	26✔
104	if (shouldCreateDynamicAAMember) {	26!
105	return new IntersectionWithDefaultDynamicReferenceType(innerTypesMemberType);	26✔
106	}
107	}
108	return innerTypesMemberType;	101✔
109	}
110
111	getCallFuncType(name: string, options: GetTypeOptions) {
NEW 112	const resultCallFuncType = this.getCallFuncFromInnerTypes(name, options);	×
NEW 113	if (!resultCallFuncType) {	×
114	// We don't have any members of any inner types that match
115	// so instead, create reference type that will
NEW 116	return new ReferenceType(name, name, options.flags, () => {	×
NEW 117	return {	×
118	name: `IntersectionType CallFunc MemberTable: '${this.__identifier}'`,
119	getSymbolType: (innerName: string, innerOptions: GetTypeOptions) => {
NEW 120	const referenceTypeInnerMemberType = this.getCallFuncFromInnerTypes(name, options);	×
NEW 121	if (!referenceTypeInnerMemberType) {	×
NEW 122	if (this.hasMemberTypeWithDefaultDynamicMember && !innerOptions.ignoreDefaultDynamicMembers) {	×
NEW 123	return DynamicType.instance;	×
124	}
125	}
NEW 126	return referenceTypeInnerMemberType;	×
127	},
128	setCachedType: (innerName: string, innerCacheEntry: TypeCacheEntry, innerOptions: GetTypeOptions) => {
129	// TODO: is this even cachable? This is a NO-OP for now, and it shouldn't hurt anything
130	},
131	addSibling: (symbolTable: SymbolTable) => {
132	// TODO: I don't know what this means in this context?
133	}
134	};
135	});
136	}
137
NEW 138	if (!resultCallFuncType?.isResolvable()) {	×
NEW 139	const shouldCreateDynamicAAMember = this.hasMemberTypeWithDefaultDynamicMember && !options.ignoreDefaultDynamicMembers;	×
NEW 140	if (shouldCreateDynamicAAMember) {	×
NEW 141	return new IntersectionWithDefaultDynamicReferenceType(resultCallFuncType);	×
142	}
143	}
144
NEW 145	if (isTypedFunctionType(resultCallFuncType)) {	×
NEW 146	const typesToCheck = [...resultCallFuncType.params.map(p => p.type), resultCallFuncType.returnType];	×
147
NEW 148	for (const type of typesToCheck) {	×
NEW 149	addAssociatedTypesTableAsSiblingToMemberTable(type, this.callFuncAssociatedTypesTable, SymbolTypeFlag.runtime);	×
150	}
151	}
NEW 152	return resultCallFuncType;	×
153	}
154
155	get returnType() {
NEW 156	return util.getReturnTypeOfIntersectionOfFunctions(this);	×
157	}
158
159
160	isTypeCompatible(targetType: BscType, data?: TypeCompatibilityData): boolean {
161	if (isDynamicType(targetType) \|\| isObjectType(targetType) \|\| this === targetType) {	13!
NEW 162	return true;	×
163	}
164	if (isEnumTypeCompatible(this, targetType, data)) {	13!
NEW 165	return true;	×
166	}
167	if (isIntersectionType(targetType)) {	13✔
168	// check if this all the types of this type are in the target (eg, target is a super set of this types)
169	let allMembersSatisfied = true;	6✔
170	for (const memberType of this.types) {	6✔
171	let foundCompatibleInnerType = false;	14✔
172	for (const targetInnerType of targetType.types) {	14✔
173	if (memberType.isTypeCompatible(targetInnerType, data)) {	25✔
174	foundCompatibleInnerType = true;	11✔
175	break;	11✔
176	}
177	}
178	if (!foundCompatibleInnerType) {	14✔
179	allMembersSatisfied = false;	3✔
180	}
181	}
182	return allMembersSatisfied;	6✔
183	}
184	let foundCompatibleInnerType = true;	7✔
185	for (const innerType of this.types) {	7✔
186	if (!innerType.isTypeCompatible(targetType, data)) {	14✔
187	foundCompatibleInnerType = false;	6✔
188	}
189	}
190
191	return foundCompatibleInnerType;	7✔
192	}
193	toString(): string {
194	return joinTypesString(this.types, 'and', BscTypeKind.IntersectionType);	6✔
195	}
196
197	/**
198	* Used for transpilation
199	*/
200	toTypeString(): string {
NEW 201	const uniqueTypeStrings = new Set<string>(getAllTypesFromCompoundType(this).map(t => t.toTypeString()));	×
202
NEW 203	if (uniqueTypeStrings.size === 1) {	×
NEW 204	return uniqueTypeStrings.values().next().value;	×
205	}
NEW 206	return 'dynamic';	×
207	}
208
209	checkAllMemberTypes(predicate: (BscType) => boolean) {
NEW 210	return this.types.reduce((acc, type) => {	×
NEW 211	return acc && predicate(type);	×
212	}, true);
213	}
214
215	isEqual(targetType: BscType): boolean {
216	if (!isIntersectionType(targetType)) {	1!
NEW 217	return false;	×
218	}
219	if (this === targetType) {	1!
NEW 220	return true;	×
221	}
222	for (const type of this.types) {	1✔
223	let foundMatch = false;	3✔
224	for (const targetTypeInner of targetType.types) {	3✔
225	if (type.isEqual(targetTypeInner)) {	6✔
226	foundMatch = true;	3✔
227	break;	3✔
228	}
229	}
230	if (!foundMatch) {	3!
NEW 231	return false;	×
232	}
233	}
234	return true;	1✔
235	}
236
237	getMemberTable(): SymbolTable {
238	const intersectionTable = new SymbolTable(this.__identifier + ' IntersectionTable');	9✔
239
240	for (const type of this.types) {	9✔
241	type.addBuiltInInterfaces();	18✔
242	for (const symbol of type.getMemberTable().getAllSymbols(SymbolTypeFlag.runtime)) {	18✔
243	const foundType = this.getMemberTypeFromInnerTypes(symbol.name, { flags: SymbolTypeFlag.runtime });	74✔
244	intersectionTable.addSymbol(symbol.name, {}, foundType, SymbolTypeFlag.runtime);	74✔
245	}
246	}
247	const firstType = this.types[0];	9✔
248	if (!firstType) {	9!
NEW 249	return intersectionTable;	×
250	}
251	firstType.addBuiltInInterfaces();	9✔
252	for (const symbol of firstType.getMemberTable().getAllSymbols(SymbolTypeFlag.runtime)) {	9✔
253	const foundType = this.getMemberTypeFromInnerTypes(symbol.name, { flags: SymbolTypeFlag.runtime });	12✔
254	intersectionTable.addSymbol(symbol.name, {}, foundType, SymbolTypeFlag.runtime);	12✔
255	}
256	return intersectionTable;	9✔
257	}
258
259
260	private _hasMemberTypeWithDefaultDynamicMember: boolean = undefined;	118✔
261	get hasMemberTypeWithDefaultDynamicMember(): boolean {
262	if (this._hasMemberTypeWithDefaultDynamicMember !== undefined) {	83✔
263	return this._hasMemberTypeWithDefaultDynamicMember;	73✔
264	}
265	this._hasMemberTypeWithDefaultDynamicMember = false;	10✔
266
267	for (const type of this.types) {	10✔
268	if (isTypeWithPotentialDefaultDynamicMember(type)) {	19✔
269	this._hasMemberTypeWithDefaultDynamicMember = true;	6✔
270	break;	6✔
271	}
272	}
273	return this._hasMemberTypeWithDefaultDynamicMember;	10✔
274	}
275	}
276
277	BuiltInInterfaceAdder.intersectionTypeFactory = (types: BscType[]) => {	1✔
NEW 278	return new IntersectionType(types);	×
279	};

rokucommunity / brighterscript / #15074

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