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definition.ts
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definition.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, DefinitionProvider,
Definition as VDefinition, DefinitionLink as VDefinitionLink
} from 'vscode';
import {
ClientCapabilities, DefinitionOptions, DefinitionRegistrationOptions, DefinitionRequest, DocumentSelector, ServerCapabilities} from 'vscode-languageserver-protocol';
import {
FeatureClient, ensure, TextDocumentLanguageFeature
} from './features';
import * as UUID from './utils/uuid';
export interface ProvideDefinitionSignature {
(this: void, document: TextDocument, position: VPosition, token: CancellationToken): ProviderResult<VDefinition | VDefinitionLink[]>;
}
export interface DefinitionMiddleware {
provideDefinition?: (this: void, document: TextDocument, position: VPosition, token: CancellationToken, next: ProvideDefinitionSignature) => ProviderResult<VDefinition | VDefinitionLink[]>;
}
export class DefinitionFeature extends TextDocumentLanguageFeature<boolean | DefinitionOptions, DefinitionRegistrationOptions, DefinitionProvider, DefinitionMiddleware> {
constructor(client: FeatureClient<DefinitionMiddleware>) {
super(client, DefinitionRequest.type);
}
public fillClientCapabilities(capabilities: ClientCapabilities): void {
const definitionSupport = ensure(ensure(capabilities, 'textDocument')!, 'definition')!;
definitionSupport.dynamicRegistration = true;
definitionSupport.linkSupport = true;
}
public initialize(capabilities: ServerCapabilities, documentSelector: DocumentSelector): void {
const options = this.getRegistrationOptions(documentSelector, capabilities.definitionProvider);
if (!options) {
return;
}
this.register({ id: UUID.generateUuid(), registerOptions: options });
}
protected registerLanguageProvider(options: DefinitionRegistrationOptions): [Disposable, DefinitionProvider] {
const selector = options.documentSelector!;
const provider: DefinitionProvider = {
provideDefinition: (document, position, token) => {
const client = this._client;
const provideDefinition: ProvideDefinitionSignature = (document, position, token) => {
return client.sendRequest(DefinitionRequest.type, client.code2ProtocolConverter.asTextDocumentPositionParams(document, position), token).then((result) => {
if (token.isCancellationRequested) {
return null;
}
return client.protocol2CodeConverter.asDefinitionResult(result, token);
}, (error) => {
return client.handleFailedRequest(DefinitionRequest.type, token, error, null);
});
};
const middleware = client.middleware;
return middleware.provideDefinition
? middleware.provideDefinition(document, position, token, provideDefinition)
: provideDefinition(document, position, token);
}
};
return [this.registerProvider(selector, provider), provider];
}
private registerProvider(selector: DocumentSelector, provider: DefinitionProvider): Disposable {
return Languages.registerDefinitionProvider(this._client.protocol2CodeConverter.asDocumentSelector(selector), provider);
}
}