monaco-editor-core
Version:
A browser based code editor
57 lines (56 loc) • 2.71 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { CancellationToken } from '../../../../base/common/cancellation.js';
import { onUnexpectedExternalError } from '../../../../base/common/errors.js';
import { assertType } from '../../../../base/common/types.js';
import { URI } from '../../../../base/common/uri.js';
import { Position } from '../../../common/core/position.js';
import * as languages from '../../../common/languages.js';
import { ILanguageFeaturesService } from '../../../common/services/languageFeatures.js';
import { ITextModelService } from '../../../common/services/resolverService.js';
import { CommandsRegistry } from '../../../../platform/commands/common/commands.js';
import { RawContextKey } from '../../../../platform/contextkey/common/contextkey.js';
export const Context = {
Visible: new RawContextKey('parameterHintsVisible', false),
MultipleSignatures: new RawContextKey('parameterHintsMultipleSignatures', false),
};
export async function provideSignatureHelp(registry, model, position, context, token) {
const supports = registry.ordered(model);
for (const support of supports) {
try {
const result = await support.provideSignatureHelp(model, position, token, context);
if (result) {
return result;
}
}
catch (err) {
onUnexpectedExternalError(err);
}
}
return undefined;
}
CommandsRegistry.registerCommand('_executeSignatureHelpProvider', async (accessor, ...args) => {
const [uri, position, triggerCharacter] = args;
assertType(URI.isUri(uri));
assertType(Position.isIPosition(position));
assertType(typeof triggerCharacter === 'string' || !triggerCharacter);
const languageFeaturesService = accessor.get(ILanguageFeaturesService);
const ref = await accessor.get(ITextModelService).createModelReference(uri);
try {
const result = await provideSignatureHelp(languageFeaturesService.signatureHelpProvider, ref.object.textEditorModel, Position.lift(position), {
triggerKind: languages.SignatureHelpTriggerKind.Invoke,
isRetrigger: false,
triggerCharacter,
}, CancellationToken.None);
if (!result) {
return undefined;
}
setTimeout(() => result.dispose(), 0);
return result.value;
}
finally {
ref.dispose();
}
});