README.md

boilerplate for a rust language server powered by tower-lsp

Introduction

This repo is a template for tower-lsp, a useful github project template which makes writing new language servers easier.

Development using VSCode

1. pnpm i
2. cargo build
3. Open the project in VSCode: code .
4. In VSCode, press F5 or change to the Debug panel and click Launch Client.
5. In the newly launched VSCode instance, open the file examples/test.nrs from this project.
6. If the LSP is working correctly you should see syntax highlighting and the features described below should work.

Note

If encountered errors like Cannot find module '/xxx/xxx/dist/extension.js' please try run command tsc -b manually, you could refer #6 for more details

A valid program in nano rust

fn factorial(x) {
    // Conditionals are supported!
    if x == 0 {
        1
    } else {
        x * factorial(x - 1)
    }
}

// The main function
fn main() {
    let three = 3;
    let meaning_of_life = three * 14 + 1;

    print("Hello, world!");
    print("The meaning of life is...");

    if meaning_of_life == 42 {
        print(meaning_of_life);
    } else {
        print("...something we cannot know");

        print("However, I can tell you that the factorial of 10 is...");
        // Function calling
        print(factorial(10));
    }
}

Features

This repo use a language nano rust which first introduced by chumsky . Most common language feature has been implemented, you could preview via the video below.

• InlayHint for LiteralType

• semantic token
  make sure your semantic token is enabled, you could enable your semantic token by adding this line to your settings.json

{
 "editor.semanticHighlighting.enabled": true,
}

• syntactic error diagnostic

syntactic.mp4

• code completion

Peek.2022-03-06.21-47.mp4

• go to definition

definition.mp4

• find reference

reference.mp4

• rename

rename.mp4