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;;; lsp-java-boot.el --- Spring boot support for lsp-java -*- lexical-binding: t; -*-
;; Version: 2.0
;; Package-Requires: ((emacs "25.1") (lsp-mode "6.0") (markdown-mode "2.3") (dash "2.18.0") (f "0.20.0") (ht "2.0") (request "0.3.0"))
;; Keywords: languague, tools
;; URL: https://github.com/emacs-lsp/lsp-java
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; LSP Java support for Spring Boot.
;;; Code:
(require 'dash)
(require 'cl-lib)
(require 'lsp-mode)
(require 'lsp-java)
(defcustom lsp-java-boot-enabled t
"If non-nil start the boot server when opening java files."
:group 'lsp-java-boot
:type 'boolean)
(defcustom lsp-java-boot-java-tools-jar nil
"Path to tools jar. If it is not specified it will be
calculated using `JAVA_HOME'."
:group 'lsp-java-boot
:type 'file)
(defvar lsp-java-boot--callback nil)
(eval-and-compile
(lsp-interface
(boot:Lenses (:doc :codeLenses))))
(defun lsp-java-boot--find-tools-jar ()
"Calculate the path to tools.jar."
(let ((tools-jar (or lsp-java-boot-java-tools-jar
(f-join (getenv "JAVA_HOME") "lib/tools.jar"))))
(unless (f-exists? tools-jar)
(error "Please configure either JAVA_HOME or lsp-java-boot-java-tools-jar"))
tools-jar))
(defun lsp-java-boot--sts-javadoc-hover-link (_workspace params)
"Handler with PARAMS data for java doc hover."
(with-lsp-workspace (lsp-find-workspace 'jdtls nil)
(lsp-request "workspace/executeCommand"
(list :command "sts.java.addClasspathListener"
:arguments (lsp-get params :callbackCommandId))
:no-wait t)))
(defun lsp-java-boot--sts-add-classpath-listener (_workspace params)
"Add classpath listener for WORKSPACE with PARAMS data."
(ignore
(with-lsp-workspace (lsp-find-workspace 'jdtls nil)
(lsp-request "workspace/executeCommand"
(list :command "sts.java.addClasspathListener"
:arguments (lsp-get params :callbackCommandId))
:no-wait t))))
(defun lsp-java-boot--lens-backend (_ callback)
"Boot backend.
Store CALLBACK to use it `sts/highlight'."
(setq-local lsp-java-boot--callback callback))
(defvar lsp-lens-backends)
(declare-function lsp-lens-refresh "lsp-lens" (buffer-modified? &optional buffer))
;;;###autoload
(define-minor-mode lsp-java-boot-lens-mode
"Toggle code-lens overlays."
:group 'lsp-java-boot
:global nil
:init-value nil
:lighter "BLens"
(cond
(lsp-java-boot-lens-mode
(require 'lsp-lens)
(setq-local lsp-lens-backends (cl-pushnew 'lsp-java-boot--lens-backend lsp-lens-backends))
(lsp-lens-refresh t))
(t (setq-local lsp-lens-backends (delete 'lsp-java-boot--lens-backend lsp-lens-backends))
(setq-local lsp-java-boot--callback nil))))
(cl-defmethod lsp-execute-command
(_server (_command (eql sts.open.url)) params)
"Execute open url command from PARAMS data."
(browse-url (lsp-seq-first params)))
(cl-defmethod lsp-execute-command
(_server (_command (eql sts.showHoverAtPosition)) params)
"Execute show hover at position command with PARAMS data."
(goto-char (lsp--position-to-point (lsp-seq-first params)))
(lsp-describe-thing-at-point))
(defun lsp-java-boot--sts-hightlight (workspace params)
"WORKSPACE PARAMS."
(with-lsp-workspace workspace
(-let (((&boot:Lenses :doc (&VersionedTextDocumentIdentifier :uri :version?) :code-lenses) params))
(when-let (buf (find-buffer-visiting (lsp--uri-to-path uri)))
(with-current-buffer buf
(when (and lsp-java-boot--callback lsp-java-boot-lens-mode)
(funcall lsp-java-boot--callback code-lenses version?)))))))
(defun lsp-java-boot--server-jar ()
"Return the spring boot jar."
(or (-> lsp-java-server-install-dir
(expand-file-name)
(f-join "boot-server")
(f-files)
(cl-first))
(lsp-log "Unable to find spring boot server jar.")))
(defun lsp-java-boot--ls-command (port)
"Create LS command for PORT."
(-filter 'identity
(list lsp-java-java-path
(unless (lsp-java--java-9-plus-p)
(format "-Dloader.path=%s" (lsp-java-boot--find-tools-jar)))
(format "-Dspring.lsp.client-port=%s" port)
(format "-Dserver.port=%s" port)
;; "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=1044,quiet=y"
"-Dsts.lsp.client=vscode"
(concat "-Dsts.log.file=" (make-temp-file "sts-log-file" nil ".log"))
(concat "-Dlogging.file=" (make-temp-file "logging-file" nil ".log"))
"-jar"
(lsp-java-boot--server-jar))))
(lsp-register-client
(make-lsp-client :new-connection
(lsp-tcp-server #'lsp-java-boot--ls-command)
:activation-fn (lambda (_filename mode)
(and lsp-java-boot-enabled
(memq mode '(java-mode conf-javaprop-mode yaml-mode))
(lsp-java-boot--server-jar)))
:request-handlers (ht ("sts/addClasspathListener" #'lsp-java-boot--sts-add-classpath-listener)
("sts/javadocHoverLink" #'lsp-java-boot--sts-javadoc-hover-link)
("sts/javaType" #'ignore))
:notification-handlers (ht ("sts/highlight" #'lsp-java-boot--sts-hightlight)
("sts/progress" #'ignore)
("sts/javaSuperTypes" #'ignore))
:multi-root t
:add-on? t
:server-id 'boot-ls
:completion-in-comments? t))
(provide 'lsp-java-boot)
;;; lsp-java-boot.el ends here
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