tarantool-lsp

A Language Server for Tarantool/Lua code, written in Lua.

It is still a work in progress, but quite usable. It currently supports:

lua-lsp legacy

• Limited auto-completion
• Goto definition
• As you type linting and syntax checking
• Code formatting
• Lua 5.1

Tarantool specific

• Autocompletion for Tarantool built-in libs on the fly:

  

• Hovering for Tarantool built-in libs on the fly:

  

• Enhanced completion:

  • [NEW] Completions triggered only on require

• Implementation CLI doc manager:

  • parsing Tarantool documentation
  • version management
  • manual updates

• Powered by Tarantool

Installation/Usage

tarantool-lsp can be installed using brew:

$ brew install https://github.com/tarantool/lua-lsp/raw/master/tarantoollsp.rb --HEAD

This will install the tarantool-lsp.

To enable Tarantool documentation for the server, say:

$ tarantool-lsp docs init

To update the documentation, say:

$ tarantool-lsp docs update

After this, configure your text editor. Language clients can then communicate with this process using stdio as a transport. See editors.md for more instructions specific to your editor of choice.

Library

You can use tarantool-lsp as a library for webserver with websocket.

tarantoolctl rocks install tarantool-lsp

In-code usage:

create_websocket_handler()

Plugins

tarantool-lsp automatically integrates with common Lua packages when they are installed. For linting, install luacheck:

$ luarocks install luacheck

For code formatting, we currently support Formatter and LCF. Formatter is 5.1 only, whereas LCF is 5.3 only.

5.1:

$ luarocks-5.1 install Formatter
$ luarocks-5.3 install lcf

If you have some other package and you would like to see it integrated, feel free to leave an issue/PR. Other plugins are always welcome, especially if they provide materially different results.

Configuration

tarantool-lsp reads a few project-level configuration files to do its work.

To configure linting, we read your standard .luacheckrc file.

For auto-complete support, we reimplement the .luacompleterc format created by atom-autocomplete-lua. In particular, we need luaVersion to properly understand your code.

More LSP-specific configuration flags will hopefully be provided through your editor's configuration support.

TODO

The LSP spec is big, and we don't implement all of it. Here is a quick wishlist, roughly ordered by priority/feasibility.

• List references (textDocument/references)
• Find symbols (workspace/symbol)
• Function signature help (textDocument/signatureHelp)
• Code links (textDocument/documentLink)
• File events (workspace/didChangeWatchedFiles)