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GNU Emacs

Tested under Linux. Not work for Windows, because it seems that lsp-mode doesn't support socket for Windows.

(add-to-list 'lsp-language-id-configuration '(wolfram-mode . "Mathematica"))

(lsp-register-client
 (make-lsp-client :language-id 'wolfram
                  :new-connection (lsp-tcp-server-command
                                   (lambda (port)
                                     `("wolfram.exe"
                                       "-script"
                                       "path/to/lsp-wl/init.wls"
                                       ,(concat
                                         "--socket="
                                         (number-to-string port)
                                         ))))
                  :major-modes '(wolfram-mode)
                  :server-id 'lsp-wl
                  ))

(Neo)vim

Use coc.nvim together with coc-lsp-wl.

Troubleshooting

Enable Logging

To reveal the internal debug and kernel message, change info to debug at https://github.com/kenkangxgwe/lsp-wl/blob/master/init.wls#L175 or similar places if you check out other branches. It reads:

    loglevel = ArgumentValue["--log"|"-l", Alternatives @@ LoggingLevels]
        // Replace[_Missing -> "debug"];

You can see the logging message in the output console of the editor. You may also dump it to a file. Uncomment https://github.com/kenkangxgwe/lsp-wl/blob/master/init.wls#L181 or places similar in other branches, so it reads:

    logstreams = {
        OpenWrite[WolframLanguageServer`RootDirectory <> "wlserver.log"],
        First @ Streams["stderr"]
    };

It will be saved to path/to/lsp-wl/wlserver.log.

Dependency Issue

The server depends on @brenton's ASTand Lint paclet, which can be install in Mathematica / Wolfram Kernel using the following command.

PacletInstall[{"AST", <version_number>}, "UpdateSites" -> True]
PacletInstall[{"Lint", <version_number>}, "UpdateSites" -> True]

But sometimes if the <version_numver> is not the latest one, it will fail. The reason I explicitly specify the version number here is trying to keep the dependency in a stable and consistent version with the server. But seems that the Wolfram Paclet Server doesn't save all the previous versions. So use this instead.

PacletInstall["AST", "UpdateSites" -> True]
PacletInstall["Lint", "UpdateSites" -> True]

You may also refer to @wuyudi's article (in Chinese).

Cannot start w/ Mathematica 11.2

• The Curry issue has been resolved in 0.2.1. Meanwhile, I figured out that Curry is not so efficient as lambda function.

  Mathematica 11.2 doesn't have Curry function, so far, you just need to checkout the develop branch, where I implemented my own MyCurry function.