Add Erlang support (#489)

* Add Erlang support

* Add Erlang screenshot

Author: robertoaloi

Makefile

@@ -12,7 +12,7 @@ DAP-CLIENTS := dap-chrome.el dap-cpptools.el dap-edge.el		\
 		dap-elixir.el dap-firefox.el dap-gdb-lldb.el		\
 		dap-go.el dap-lldb.el dap-netcore.el dap-node.el	\
 		dap-php.el dap-pwsh.el dap-python.el dap-ruby.el	\
-		dap-codelldb.el
+		dap-codelldb.el dap-erlang.el
 
 TEST-FILES := test/windows-bootstrap.el $(shell ls test/dap-*.el)
 LOAD-FILE = -l $(test-file)

dap-erlang.el

@@ -0,0 +1,43 @@
+;;; dap-erlang.el --- Debug Adapter Protocol mode for Erlang      -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2018  Ivan Yonchovski
+
+;; Author: Ivan Yonchovski <[email protected]>
+;; Keywords: languages
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;; URL: https://github.com/yyoncho/dap-mode
+;; Package-Requires: ((emacs "25.1") (dash "2.14.1") (lsp-mode "4.0"))
+;; Version: 0.2
+
+;;; Commentary:
+;; Adapter for https://github.com/erlang-ls/erlang_ls
+;; Created by Roberto Aloi (@robertoaloi)
+
+;;; Code:
+
+(require 'dap-mode)
+
+(defun dap-erlang--populate-start-file-args (conf)
+  "Populate CONF with the required arguments."
+  (-> conf
+    (plist-put :dap-server-path '("els_dap"))
+    (plist-put :projectDir (lsp-find-session-folder (lsp-session) (buffer-file-name)))
+    (plist-put :cwd (lsp-find-session-folder (lsp-session) (buffer-file-name)))
+    ))
+(dap-register-debug-provider "erlang" 'dap-erlang--populate-start-file-args)
+
+(provide 'dap-erlang)
+;;; dap-erlang.el ends here

docs/page/configuration.md

@@ -199,6 +199,19 @@ Then when you do `dap-debug-edit-template` and select Elixir which will
 generate runnable debug configuration. For more details on supported
 settings by the Elixir Debug Server refer to its documentation.
 
+## Erlang
+
+Make sure that you have properly configured `Erlang` and that you have
+[Erlang LS](https://github.com/erlang-ls/erlang_ls) binaries on the
+path and put in your emacs configuration.
+
+``` elisp
+(require 'dap-erlang)
+```
+
+For more information about DAP support in Erlang LS please refer to
+[the official documentation](https://erlang-ls.github.io/).
+
 ## PHP
 
 Simplify setup of vscode extension with `dap-php-setup` after requiring

docs/page/gallery.md

@@ -24,3 +24,7 @@ Gallery
 ## Javascript
 
 ![Javascript via Firefox debugger](../screenshots/javascript.png)
+
+## Erlang
+
+![Erlang via Erlang LS](../screenshots/erlang.png)