langium
Version:
A language engineering tool for the Language Server Protocol
30 lines • 1.44 kB
JavaScript
/******************************************************************************
* Copyright 2022 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 { CancellationToken } from '../utils/cancellation.js';
import { findDeclarationNodeAtOffset } from '../utils/cst-utils.js';
export class AbstractTypeDefinitionProvider {
constructor(services) {
this.references = services.references.References;
}
async getTypeDefinition(document, params, cancelToken = CancellationToken.None) {
const rootNode = document.parseResult.value;
if (rootNode.$cstNode) {
const sourceCstNode = findDeclarationNodeAtOffset(rootNode.$cstNode, document.textDocument.offsetAt(params.position));
if (sourceCstNode) {
const nodeDeclarations = this.references.findDeclarations(sourceCstNode);
const links = [];
for (const node of nodeDeclarations) {
const location = await this.collectGoToTypeLocationLinks(node, cancelToken);
if (location) {
links.push(...location);
}
}
}
}
return undefined;
}
}
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