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Contribute to html language server with a custom language.
Fixes microsoft#146730 Signed-off-by: azerr <[email protected]>
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153 changes: 153 additions & 0 deletions
153
extensions/html-language-features/client/src/htmlExtension.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| /*--------------------------------------------------------------------------------------------- | ||
| * Copyright (c) Microsoft Corporation. All rights reserved. | ||
| * Licensed under the MIT License. See License.txt in the project root for license information. | ||
| *--------------------------------------------------------------------------------------------*/ | ||
|
|
||
| import * as vscode from 'vscode'; | ||
| import { DocumentFilter, DocumentSelector } from 'vscode-languageclient'; | ||
| import { isDeepStrictEqual } from 'util'; | ||
|
|
||
| const RELOAD_WINDOW = 'workbench.action.reloadWindow'; | ||
|
|
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| let existingExtensions: HtmlLanguageContribution[]; | ||
|
|
||
| /** | ||
| * Html language contribution | ||
| */ | ||
| export interface HtmlLanguageContribution { | ||
| documentSelector: DocumentSelector; | ||
| activateAutoInsertion: false; | ||
| } | ||
|
|
||
| /** | ||
| * Returns all Html language contributions from package.json | ||
| * | ||
| * @param extensions array of extensions to search contributions from | ||
| */ | ||
| export function collectHtmlLanguageContributions(extensions: readonly vscode.Extension<any>[]): HtmlLanguageContribution[] { | ||
| const result: HtmlLanguageContribution[] = []; | ||
| if (extensions && extensions.length) { | ||
| for (const extension of extensions) { | ||
| const htmlLanguages = extension.packageJSON?.contributes?.html?.languages; | ||
| if (Array.isArray(htmlLanguages)) { | ||
| htmlLanguages.forEach(htmlExtensionSection => { | ||
| const htmlExtension = createHtmlExtension(htmlExtensionSection); | ||
| if (htmlExtension) { | ||
| result.push(htmlExtension); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
| } | ||
| // Make a copy of extensions: | ||
| existingExtensions = result.slice(); | ||
| return result; | ||
| } | ||
|
|
||
| export function handleExtensionChange(extensions: readonly vscode.Extension<any>[]): void { | ||
| if (!existingExtensions) { | ||
| return; | ||
| } | ||
| const oldExtensions = new Set(existingExtensions.slice()); | ||
| const newExtensions = collectHtmlLanguageContributions(extensions); | ||
| let hasChanged = (oldExtensions.size !== newExtensions.length); | ||
| if (!hasChanged) { | ||
| for (const newExtension of newExtensions) { | ||
| let found = false; | ||
| for (const oldExtension of oldExtensions) { | ||
| if (isDeepStrictEqual(oldExtension, newExtension)) { | ||
| found = true; | ||
| break; | ||
| } | ||
| } | ||
| if (found) { | ||
| continue; | ||
| } else { | ||
| hasChanged = true; | ||
| break; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if (hasChanged) { | ||
| const msg = `Extensions to the Html Language Server changed, reloading ${vscode.env.appName} is required for the changes to take effect.`; | ||
| const action = 'Reload'; | ||
| vscode.window.showWarningMessage(msg, action).then((selection) => { | ||
| if (action === selection) { | ||
| vscode.commands.executeCommand(RELOAD_WINDOW); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Returns the document selector. | ||
| * | ||
| * The returned document selector contains the html document selectors | ||
| * and all document selectors contained in `htmlContributions`. | ||
| * | ||
| * @param htmlContributions Html language server contributions from other VS Code extensions | ||
| */ | ||
| export function getDocumentSelector(htmlContributions: HtmlLanguageContribution[]): DocumentSelector { | ||
| let documentSelector: DocumentSelector = [ | ||
| 'html' | ||
| ]; | ||
| htmlContributions.forEach((contribution: HtmlLanguageContribution) => { | ||
| documentSelector = documentSelector.concat(contribution.documentSelector); | ||
| }); | ||
| return documentSelector; | ||
| } | ||
|
|
||
| export function getActivateAutoInsertionSupportedLanguages(htmlContributions: HtmlLanguageContribution[]): { [id: string]: boolean } { | ||
| const supportedLanguages: { [id: string]: boolean } = { html: true }; | ||
| htmlContributions.forEach((contribution: HtmlLanguageContribution) => { | ||
| contribution.documentSelector.forEach(selector => { | ||
| if (typeof selector === 'string') { | ||
| const language: string = selector; | ||
| supportedLanguages[language] = contribution.activateAutoInsertion; | ||
| } else { | ||
| const language = (<DocumentFilter>selector).language; | ||
| if (language) { | ||
| supportedLanguages[language] = contribution.activateAutoInsertion; | ||
| } | ||
| } | ||
| }); | ||
| }); | ||
| return supportedLanguages; | ||
| } | ||
|
|
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| function createHtmlExtension(section: any): HtmlLanguageContribution | undefined { | ||
| const documentSelector = createSelector(section); | ||
| if (documentSelector.length > 0) { | ||
| const activateAutoInsertion = section.activateAutoInsertion === true ? true : false; | ||
| return { documentSelector, activateAutoInsertion } as HtmlLanguageContribution; | ||
| } | ||
| return; | ||
| } | ||
|
|
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| function createSelector(section: any): DocumentSelector { | ||
| if (!Array.isArray(section.documentSelector)) { | ||
| return []; | ||
| } | ||
| const documentSelector: DocumentSelector = []; | ||
| section.documentSelector.forEach((selector: any) => { | ||
| if (typeof selector === 'string') { | ||
| documentSelector.push(selector); | ||
| } else if (selector) { | ||
| const documentFilter: { [key: string]: string } = {}; | ||
| if (typeof selector.language === 'string') { | ||
| documentFilter.language = selector.language; | ||
| } | ||
| if (typeof selector.scheme === 'string') { | ||
| documentFilter.scheme = selector.scheme; | ||
| } | ||
| if (typeof selector.pattern === 'string') { | ||
| documentFilter.pattern = selector.pattern; | ||
| } | ||
| if (documentFilter.language || documentFilter.scheme || documentFilter.pattern) { | ||
| documentSelector.push(documentFilter as DocumentFilter); | ||
| } | ||
| } | ||
| }); | ||
| return documentSelector; | ||
| } |
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