156 lines
5.5 KiB
EmacsLisp
156 lines
5.5 KiB
EmacsLisp
;;; lsp-erlang.el --- Erlang Client settings -*- lexical-binding: t; -*-
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;; Copyright (C) 2019-2023 Roberto Aloi, Alan Zimmerman
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;; Author: Roberto Aloi, Alan Zimmerman
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;; Keywords: erlang lsp
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; lsp-erlang client
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;;; Code:
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(require 'lsp-mode)
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(defgroup lsp-erlang nil
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"LSP support for the Erlang programming language.
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It can use erlang-ls or erlang-language-platform (ELP)."
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:group 'lsp-mode)
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(defgroup lsp-erlang-ls nil
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"LSP support for the Erlang programming language using erlang-ls."
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:group 'lsp-mode
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:link '(url-link "https://github.com/erlang-ls/erlang_ls"))
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(defgroup lsp-erlang-elp nil
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"LSP support for the Erlang programming language using erlang-language-platform (ELP)."
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:group 'lsp-mode
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:link '(url-link "https://github.com/WhatsApp/erlang-language-platform"))
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(defcustom lsp-erlang-server 'erlang-ls
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"Choose LSP server."
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:type '(choice (const :tag "erlang-ls" erlang-ls)
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(const :tag "erlang-language-platform" erlang-language-platform))
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:group 'lsp-erlang
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:package-version '(lsp-mode . "6.2"))
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;; erlang-ls
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(defcustom lsp-erlang-ls-server-path
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"erlang_ls"
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"Path to the Erlang Language Server binary."
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:group 'lsp-erlang-ls
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:risky t
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:type 'file)
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(defcustom lsp-erlang-ls-server-connection-type
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'stdio
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"Type of connection to use with the Erlang Language Server: tcp or stdio."
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:group 'lsp-erlang-ls
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:risky t
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:type 'symbol)
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(defun lsp-erlang-ls-server-start-fun (port)
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"Command to start erlang_ls in TCP mode on the given PORT."
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`(,lsp-erlang-ls-server-path
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"--transport" "tcp"
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"--port" ,(number-to-string port)))
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(defun lsp-erlang-ls-server-connection ()
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"Command to start erlang_ls in stdio mode."
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(if (eq lsp-erlang-ls-server-connection-type 'tcp)
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(lsp-tcp-connection 'lsp-erlang-ls-server-start-fun)
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(lsp-stdio-connection `(,lsp-erlang-ls-server-path "--transport" "stdio"))))
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(lsp-register-client
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(make-lsp-client :new-connection (lsp-erlang-ls-server-connection)
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:major-modes '(erlang-mode)
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:priority -1
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:server-id 'erlang-ls))
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;; erlang-language-platform
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(defcustom lsp-erlang-elp-server-command '("elp" "server")
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"Command to start erlang-language-platform."
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:type '(repeat string)
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:group 'lsp-erlang-elp
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:package-version '(lsp-mode . "8.0.0"))
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(defcustom lsp-erlang-elp-download-url
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(format "https://github.com/WhatsApp/erlang-language-platform/releases/latest/download/%s"
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(pcase system-type
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('gnu/linux "elp-linux.tar.gz")
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('darwin "elp-macos.tar.gz")))
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"Automatic download url for erlang-language-platform."
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:type 'string
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:group 'lsp-erlang-elp
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:package-version '(lsp-mode . "8.0.0"))
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(defcustom lsp-erlang-elp-store-path (f-join lsp-server-install-dir
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"erlang"
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(if (eq system-type 'windows-nt)
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"elp.exe"
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"elp"))
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"The path to the file in which `elp' will be stored."
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:type 'file
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:group 'lsp-erlang-elp
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:package-version '(lsp-mode . "8.0.0"))
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(lsp-dependency
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'erlang-language-platform
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`(:download :url lsp-erlang-elp-download-url
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:decompress :targz
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:store-path lsp-erlang-elp-store-path
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:set-executable? t)
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'(:system "elp"))
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;; Client
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(lsp-register-client
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(make-lsp-client
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:new-connection (lsp-stdio-connection
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(lambda ()
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`(,(or (executable-find
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(cl-first lsp-erlang-elp-server-command))
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(lsp-package-path 'erlang-language-platform)
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"elp")
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,@(cl-rest lsp-erlang-elp-server-command))))
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:activation-fn (lsp-activate-on "erlang")
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:priority (if (eq lsp-erlang-server 'erlang-language-platform) 1 -2)
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:server-id 'elp
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:custom-capabilities `((experimental . ((snippetTextEdit . ,(and lsp-enable-snippet (featurep 'yasnippet))))))
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:download-server-fn (lambda (_client callback error-callback _update?)
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(lsp-package-ensure 'erlang-language-platform callback error-callback))))
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(defun lsp-erlang-switch-server (&optional lsp-server)
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"Switch priorities of lsp servers, unless LSP-SERVER is already active."
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(interactive)
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(let ((current-server (if (> (lsp--client-priority (gethash 'erlang-ls lsp-clients)) 0)
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'erlang-ls
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'erlang-language-platform)))
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(unless (eq lsp-server current-server)
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(dolist (server '(erlang-ls erlang-language-platform))
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(when (natnump (setf (lsp--client-priority (gethash server lsp-clients))
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(* (lsp--client-priority (gethash server lsp-clients)) -1)))
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(message (format "Switched to server %s." server)))))))
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(lsp-consistency-check lsp-erlang)
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(provide 'lsp-erlang)
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;;; lsp-erlang.el ends here
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