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reference.ts
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reference.ts
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/* --------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
* ------------------------------------------------------------------------------------------ */
import {
languages as Languages, TextDocument, Disposable, Position as VPosition, CancellationToken, ProviderResult, ReferenceProvider, Location as VLocation
} from 'vscode';
import {
ClientCapabilities, DocumentSelector, ReferenceOptions, ReferenceRegistrationOptions, ReferencesRequest, ServerCapabilities, TextDocumentRegistrationOptions
} from 'vscode-languageserver-protocol';
import {
FeatureClient, ensure, TextDocumentLanguageFeature
} from './features';
import * as UUID from './utils/uuid';
export interface ProvideReferencesSignature {
(this: void, document: TextDocument, position: VPosition, options: { includeDeclaration: boolean }, token: CancellationToken): ProviderResult<VLocation[]>;
}
export interface ReferencesMiddleware {
provideReferences?: (this: void, document: TextDocument, position: VPosition, options: { includeDeclaration: boolean }, token: CancellationToken, next: ProvideReferencesSignature) => ProviderResult<VLocation[]>;
}
export class ReferencesFeature extends TextDocumentLanguageFeature<boolean | ReferenceOptions, ReferenceRegistrationOptions, ReferenceProvider, ReferencesMiddleware> {
constructor(client: FeatureClient<ReferencesMiddleware>) {
super(client, ReferencesRequest.type);
}
public fillClientCapabilities(capabilities: ClientCapabilities): void {
ensure(ensure(capabilities, 'textDocument')!, 'references')!.dynamicRegistration = true;
}
public initialize(capabilities: ServerCapabilities, documentSelector: DocumentSelector): void {
const options = this.getRegistrationOptions(documentSelector, capabilities.referencesProvider);
if (!options) {
return;
}
this.register({ id: UUID.generateUuid(), registerOptions: options });
}
protected registerLanguageProvider(options: TextDocumentRegistrationOptions): [Disposable, ReferenceProvider] {
const selector = options.documentSelector!;
const provider: ReferenceProvider = {
provideReferences: (document, position, options, token) => {
const client = this._client;
const _providerReferences: ProvideReferencesSignature = (document, position, options, token) => {
return client.sendRequest(ReferencesRequest.type, client.code2ProtocolConverter.asReferenceParams(document, position, options), token).then((result) => {
if (token.isCancellationRequested) {
return null;
}
return client.protocol2CodeConverter.asReferences(result, token);
}, (error) => {
return client.handleFailedRequest(ReferencesRequest.type, token, error, null);
});
};
const middleware = client.middleware;
return middleware.provideReferences
? middleware.provideReferences(document, position, options, token, _providerReferences)
: _providerReferences(document, position, options, token);
}
};
return [this.registerProvider(selector, provider), provider];
}
private registerProvider(selector: DocumentSelector, provider: ReferenceProvider): Disposable {
return Languages.registerReferenceProvider(this._client.protocol2CodeConverter.asDocumentSelector(selector), provider);
}
}