LSP Example for Embedded Language using Language Service

Heavily documented sample code for https://code.visualstudio.com/api/language-extensions/embedded-languages#language-services

Functionality

This extension contributes a new language, html1. The new language is for illustration purpose and has basic syntax highlighting.

This Language Server works for html1 file. HTML1 is like HTML file but has file extension .html1. You can create a test.html1 file to play with below functionalities:

• Completions for HTML tags
• Completions for CSS in <style> tag
• Diagnostics for CSS

Running the Sample

• Run npm install in this folder. This installs all necessary npm modules in both the client and server folder
• Open VS Code on this folder.
• Press Ctrl+Shift+B to compile the client and server.
• Switch to the Debug viewlet.
• Select Launch Client from the drop down.
• Run the launch config.
• If you want to debug the server as well use the launch configuration Attach to Server
• In the [Extension Development Host] instance of VSCode, open a HTML document
  • Type <d| to try HTML completion
  • Type <style>.foo { c| }</style> to try CSS completion
  • Have <style>.foo { }</style> to see CSS Diagnostics