50 lines
2.2 KiB
JavaScript
50 lines
2.2 KiB
JavaScript
/******************************************************************************
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* Copyright 2022 TypeFox GmbH
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* This program and the accompanying materials are made available under the
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* terms of the MIT License, which is available in the project root.
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******************************************************************************/
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import { CancellationToken } from '../utils/cancellation.js';
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import { findLeafNodeAtOffset } from '../utils/cst-utils.js';
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export class AbstractSignatureHelpProvider {
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provideSignatureHelp(document, params, cancelToken = CancellationToken.None) {
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const rootNode = document.parseResult.value;
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const cst = rootNode.$cstNode;
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if (cst) {
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const sourceCstNode = findLeafNodeAtOffset(cst, document.textDocument.offsetAt(params.position));
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if (sourceCstNode) {
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return this.getSignatureFromElement(sourceCstNode.astNode, cancelToken);
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}
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}
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return undefined;
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}
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/**
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* Override this getter to return the list of triggering characters for your language. To deactivate the signature help, return an empty object.
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*/
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get signatureHelpOptions() {
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return {
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triggerCharacters: ['('],
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retriggerCharacters: [',']
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};
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}
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}
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/**
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* Merges the SignatureHelpOptions of all languages
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*/
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export function mergeSignatureHelpOptions(options) {
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const triggerCharacters = [];
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const retriggerCharacters = [];
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options.forEach(option => {
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if (option === null || option === void 0 ? void 0 : option.triggerCharacters) {
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triggerCharacters.push(...option.triggerCharacters);
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}
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if (option === null || option === void 0 ? void 0 : option.retriggerCharacters) {
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retriggerCharacters.push(...option.retriggerCharacters);
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}
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});
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const mergedOptions = {
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triggerCharacters: triggerCharacters.length > 0 ? Array.from(new Set(triggerCharacters)).sort() : undefined,
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retriggerCharacters: retriggerCharacters.length > 0 ? Array.from(new Set(retriggerCharacters)).sort() : undefined
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};
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return mergedOptions.triggerCharacters ? mergedOptions : undefined;
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}
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//# sourceMappingURL=signature-help-provider.js.map
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