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domain-model-scope.ts
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domain-model-scope.ts
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/******************************************************************************
* Copyright 2021 TypeFox GmbH
* This program and the accompanying materials are made available under the
* terms of the MIT License, which is available in the project root.
******************************************************************************/
import type { AstNode, AstNodeDescription, LangiumDocument, PrecomputedScopes } from 'langium';
import type { DomainModelServices } from './domain-model-module.js';
import type { QualifiedNameProvider } from './domain-model-naming.js';
import type { Domainmodel, PackageDeclaration } from './generated/ast.js';
import { AstUtils, Cancellation, DefaultScopeComputation, interruptAndCheck, MultiMap } from 'langium';
import { isType, isPackageDeclaration } from './generated/ast.js';
export class DomainModelScopeComputation extends DefaultScopeComputation {
qualifiedNameProvider: QualifiedNameProvider;
constructor(services: DomainModelServices) {
super(services);
this.qualifiedNameProvider = services.references.QualifiedNameProvider;
}
/**
* Exports only types (`DataType or `Entity`) with their qualified names.
*/
override async computeExports(document: LangiumDocument, cancelToken = Cancellation.CancellationToken.None): Promise<AstNodeDescription[]> {
const descr: AstNodeDescription[] = [];
for (const modelNode of AstUtils.streamAllContents(document.parseResult.value)) {
await interruptAndCheck(cancelToken);
if (isType(modelNode)) {
let name = this.nameProvider.getName(modelNode);
if (name) {
if (isPackageDeclaration(modelNode.$container)) {
name = this.qualifiedNameProvider.getQualifiedName(modelNode.$container as PackageDeclaration, name);
}
descr.push(this.descriptions.createDescription(modelNode, name, document));
}
}
}
return descr;
}
override async computeLocalScopes(document: LangiumDocument, cancelToken = Cancellation.CancellationToken.None): Promise<PrecomputedScopes> {
const model = document.parseResult.value as Domainmodel;
const scopes = new MultiMap<AstNode, AstNodeDescription>();
await this.processContainer(model, scopes, document, cancelToken);
return scopes;
}
protected async processContainer(container: Domainmodel | PackageDeclaration, scopes: PrecomputedScopes, document: LangiumDocument, cancelToken: Cancellation.CancellationToken): Promise<AstNodeDescription[]> {
const localDescriptions: AstNodeDescription[] = [];
for (const element of container.elements) {
await interruptAndCheck(cancelToken);
if (isType(element) && element.name) {
const description = this.descriptions.createDescription(element, element.name, document);
localDescriptions.push(description);
} else if (isPackageDeclaration(element)) {
const nestedDescriptions = await this.processContainer(element, scopes, document, cancelToken);
for (const description of nestedDescriptions) {
// Add qualified names to the container
const qualified = this.createQualifiedDescription(element, description, document);
localDescriptions.push(qualified);
}
}
}
scopes.addAll(container, localDescriptions);
return localDescriptions;
}
protected createQualifiedDescription(pack: PackageDeclaration, description: AstNodeDescription, document: LangiumDocument): AstNodeDescription {
const name = this.qualifiedNameProvider.getQualifiedName(pack.name, description.name);
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
return this.descriptions.createDescription(description.node!, name, document);
}
}