lsp-multi-server-sample: A heavily documented, advanced version of lsp-sample that starts a different server instance per workspace folder to support the multi-root workspace feature in VS Code.Ĭlone the repository Microsoft/vscode-extension-samples and open the sample: > git clone > cd vscode-extension-samples/lsp-sample > npm install > npm run compile > code.lsp-sample: Heavily documented source code for this guide.If you prefer to jump right into the code: We will also cover the syncing of configurations between Client / Server. Let's build a simple Language Server extension that implements autocomplete and diagnostics for plain text files. LSP Sample - A simple Language Server for plain text files The remaining document assumes that you are familiar with VS Code Extension API. This guide will teach you how to build a Language Client / Server using our Node SDK. Although the PHP Language Server is written in PHP, it can still communicate with the PHP Language Client through LSP. Each of them instantiates a corresponding Language Server and communicates with them through LSP. The HTML Language Client and PHP Language Client are normal VS Code extensions written in TypeScript. Here is an illustration of VS Code running two Language Server extensions. As language analysis tools are often heavy on CPU and Memory usage, running them in separate process avoids performance cost.The analysis tool can be implemented in any languages, as long as it can communicate with the Language Client following the Language Server Protocol.Language Server: A language analysis tool running in a separate process.Īs briefly stated above there are two benefits of running the Language Server in a separate process:.This extension has access to all VS Code Namespace API. Language Client: A normal VS Code extension written in JavaScript / TypeScript. In VS Code, a language server has two parts:
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