java: refactor documentation to put meghanada first

This commit is contained in:
syl20bnr 2017-03-19 13:15:33 -04:00
parent f86c55f499
commit c9d332fbf1
2 changed files with 109 additions and 108 deletions

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@ -6,28 +6,36 @@
- [[#description][Description]]
- [[#layer-installation][Layer Installation]]
- [[#layer][Layer]]
- [[#choosing-a-backend][Choosing a backend]]
- [[#backends][Backends]]
- [[#eclim][Eclim]]
- [[#meghanada][Meghanada]]
- [[#installation][Installation]]
- [[#about-maven][About Maven]]
- [[#eclim][Eclim]]
- [[#installation-1][Installation]]
- [[#eclipse][Eclipse]]
- [[#eclim-1][Eclim]]
- [[#configuration][Configuration]]
- [[#usage][Usage]]
- [[#ensime][ENSIME]]
- [[#installation-1][Installation]]
- [[#installation-2][Installation]]
- [[#usage-1][Usage]]
- [[#issues][Issues]]
- [[#meghanada][Meghanada]]
- [[#installation-2][Installation]]
- [[#about-maven][About Maven]]
- [[#key-bindings][Key bindings]]
- [[#meghanada-1][Meghanada]]
- [[#server][Server]]
- [[#navigation][Navigation]]
- [[#compilation][Compilation]]
- [[#tests-junit][Tests (junit)]]
- [[#refactoring][Refactoring]]
- [[#tasks][Tasks]]
- [[#eclim-2][Eclim]]
- [[#java-mode][Java-mode]]
- [[#project-management][Project management]]
- [[#eclim-daemon][Eclim daemon]]
- [[#maven][Maven]]
- [[#goto][Goto]]
- [[#refactoring][Refactoring]]
- [[#refactoring-1][Refactoring]]
- [[#documentation-find][Documentation, Find]]
- [[#errors-problems][Errors (problems)]]
- [[#tests][Tests]]
@ -42,22 +50,15 @@
- [[#goto-1][Goto]]
- [[#print-and-yank-types][Print and yank types]]
- [[#documentation-inspect][Documentation, Inspect]]
- [[#server][Server]]
- [[#refactoring-1][Refactoring]]
- [[#server-1][Server]]
- [[#refactoring-2][Refactoring]]
- [[#tests-1][Tests]]
- [[#repl][REPL]]
- [[#meghanada-1][Meghanada]]
- [[#server-1][Server]]
- [[#navigation][Navigation]]
- [[#compilation][Compilation]]
- [[#tests-junit][Tests (junit)]]
- [[#refactoring-2][Refactoring]]
- [[#tasks][Tasks]]
* Description
This layer adds support for the Java language, it supports multiple backends:
- the [[http://eclim.org][Eclim]] client/server (default),
- the [[https://github.com/mopemope/meghanada-emacs][Meghanada]] client/server,
- the [[https://github.com/mopemope/meghanada-emacs][Meghanada]] client/server (default),
- the [[http://eclim.org][Eclim]] client/server,
- the [[https://ensime.github.io/][ENSIME]] client/server.
* Layer Installation
@ -66,7 +67,7 @@ To use this configuration layer, add it to your =~/.spacemacs=. You will need to
add =java= to the existing =dotspacemacs-configuration-layers= list in this
file.
* Backends
** Choosing a backend
To choose a default backend set the layer variable =java-backend=:
#+BEGIN_SRC elisp
@ -75,17 +76,43 @@ To choose a default backend set the layer variable =java-backend=:
Backend can be chosen on a per project basis using directory local variables
(files named =.dir-locals.el= at the root of a project), an example to use the
=meghanada= backend:
=eclim= backend:
#+BEGIN_SRC elisp
;;; Directory Local Variables
;;; For more information see (info "(emacs) Directory Variables")
((java-mode (java-backend . meghanada)))
((java-mode (java-backend . eclim)))
#+END_SRC
*Note:* you can easily add a directory local variable with ~SPC f v d~.
* Backends
** Meghanada
Meghanada is composed of a lightweight server and an Emacs minor mode. It
is unintrusive and integrates with =company= and =flycheck=.
Both =Gradle= and =Maven= projects are compatible with Meghanada.
Meghanada is the default backend used by this layer, see [[#choosing-a-backend][Choosing a backend]] in
order to lean how to select a different backend.
*** Installation
The Meghanada server will be installed automatically whenever a Java file
is opened.
If you get issues with the auto-installation you can either download the last
version of the server manually [[https://dl.bintray.com/mopemope/meghanada/][there]] or build from source hosted on [[https://github.com/mopemope/meghanada-server][the GitHub
repository]] and copy the =jar= file to =.emacs.d/.cache/meghanada= folder.
No additional configuration is necessary!
*** About Maven
Maven is not fully supported by Meghanada (but should still work fine for most
projects). If you encounter disconnection from the server then run =mvn install=
at the root of your project first.
** Eclim
Eclim provides the ability to access Eclipse features such as code completion,
searching, code validation, and many more. This is the default value for the
@ -176,27 +203,60 @@ Start the ensime server by running ~SPC SPC ensime~ or ~M-x ensime~.
ENSIME is originally built for Scala, so support for java is not complete, in
particular refactoring doesn't work.
** Meghanada
Meghanada is composed of a lightweight server and an Emacs minor mode. It
is unintrusive and integrates with =company= and =flycheck=.
Both =Gradle= and =Maven= projects are compatible with Meghanada.
*** Installation
The Meghanada server will be installed automatically whenever a Java file
is opened.
If you get issues with the auto-installation you can either download the
server manually [[https://dl.bintray.com/mopemope/meghanada/][there]] or build from source hosted on [[https://github.com/mopemope/meghanada-server][the GitHub repository]]
and copie the =jar= file to =.emacs.d/.cache/meghanada= folder.
No additional configuration is necessary!
*** About Maven
Maven is not fully supported by Meghanada, if you encounter disconnection
from the server then run =mvn install= at the root of your project first.
* Key bindings
** Meghanada
*** Server
| Key Binding | Description |
|-------------+----------------------------------------------|
| ~SPC m D c~ | Connect to server |
| ~SPC m D d~ | Disconnect from server |
| ~SPC m D i~ | Install server (should be done automatically |
| ~SPC m D k~ | Kill server |
| ~SPC m D l~ | Clear server cache |
| ~SPC m D p~ | Ping server |
| ~SPC m D r~ | Restarrt server |
| ~SPC m D s~ | Start server |
| ~SPC m D u~ | Update server |
| ~SPC m D v~ | Print version of the server |
*** Navigation
| Key Binding | Description |
|-------------+--------------------------------|
| ~SPC m g b~ | Jump back to previous location |
| ~SPC m g g~ | Jump to declaration |
*** Compilation
| Key Binding | Description |
|-------------+-----------------------|
| ~SPC m c b~ | Compile file (buffer) |
| ~SPC m c c~ | Compile project |
*** Tests (junit)
| Key Binding | Description |
|-------------+-----------------------------|
| ~SPC m t a~ | Run all tests |
| ~SPC m t c~ | Run test class around point |
| ~SPC m t l~ | Run last tests |
| ~SPC m t t~ | Run test cause around point |
*** Refactoring
| Key Binding | Description |
|-------------+----------------------------------------------|
| ~SPC m =~ | Beautify code |
| ~SPC m r i~ | Optimize imports |
| ~SPC m r I~ | Import all |
*** Tasks
| Key Binding | Description |
|-------------+-------------|
| ~SPC m x :~ | Run task |
** Eclim
*** Java-mode
**** Project management
@ -428,55 +488,3 @@ from the server then run =mvn install= at the root of your project first.
| ~SPC m s r~ | send region to the REPL |
| ~SPC m s R~ | send region to the REPL and focus the REPL buffer in =insert state= |
** Meghanada
*** Server
| Key Binding | Description |
|-------------+----------------------------------------------|
| ~SPC m D c~ | Connect to server |
| ~SPC m D d~ | Disconnect from server |
| ~SPC m D i~ | Install server (should be done automatically |
| ~SPC m D k~ | Kill server |
| ~SPC m D l~ | Clear server cache |
| ~SPC m D p~ | Ping server |
| ~SPC m D r~ | Restarrt server |
| ~SPC m D s~ | Start server |
| ~SPC m D u~ | Update server |
| ~SPC m D v~ | Print version of the server |
*** Navigation
| Key Binding | Description |
|-------------+--------------------------------|
| ~SPC m g b~ | Jump back to previous location |
| ~SPC m g g~ | Jump to declaration |
*** Compilation
| Key Binding | Description |
|-------------+-----------------------|
| ~SPC m c b~ | Compile file (buffer) |
| ~SPC m c c~ | Compile project |
*** Tests (junit)
| Key Binding | Description |
|-------------+-----------------------------|
| ~SPC m t a~ | Run all tests |
| ~SPC m t c~ | Run test class around point |
| ~SPC m t l~ | Run last tests |
| ~SPC m t t~ | Run test cause around point |
*** Refactoring
| Key Binding | Description |
|-------------+----------------------------------------------|
| ~SPC m =~ | Beautify code |
| ~SPC m r i~ | Optimize imports |
| ~SPC m r I~ | Import all |
*** Tasks
| Key Binding | Description |
|-------------+-------------|
| ~SPC m x :~ | Run task |

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@ -28,35 +28,34 @@
(defun spacemacs//java-setup-backend ()
"Conditionally setup java backend."
(pcase java-backend
(`meghanada (spacemacs//java-setup-meghanada))
(`eclim (spacemacs//java-setup-eclim))
(`ensime (spacemacs//java-setup-ensime))
(`meghanada (spacemacs//java-setup-meghanada))))
(`ensime (spacemacs//java-setup-ensime))))
(defun spacemacs//java-setup-company ()
"Conditionally setup company based on backend."
(pcase java-backend
(`meghanada (spacemacs//java-setup-meghanada-company))
(`eclim (spacemacs//java-setup-eclim-company))
(`ensime (spacemacs//java-setup-ensime-company))
(`meghanada (spacemacs//java-setup-meghanada-company))))
(`ensime (spacemacs//java-setup-ensime-company))))
(defun spacemacs//java-setup-flycheck ()
"Conditionally setup flycheck based on backend."
(pcase java-backend
(`meghanada (spacemacs//java-setup-meghanada-flycheck))
(`eclim (spacemacs//java-setup-eclim-flycheck))
(`ensime (spacemacs//java-setup-ensime-flycheck))
(`meghanada (spacemacs//java-setup-meghanada-flycheck))))
(`ensime (spacemacs//java-setup-ensime-flycheck))))
(defun spacemacs//java-setup-flyspell ()
"Conditionally setup flyspell based on backend."
(pcase java-backend
(`ensime (spacemacs//java-setup-ensime-flyspell))
(`meghanada (spacemacs//java-setup-meghanada-flyspell))))
(`ensime (spacemacs//java-setup-ensime-flyspell))))
(defun spacemacs//java-setup-eldoc ()
"Conditionally setup eldoc based on backend."
(pcase java-backend
(`ensime (spacemacs//java-setup-ensime-eldoc))
(`meghanada (spacemacs//java-setup-meghanada-eldoc))))
;; meghanada setup eldoc on its own
(`ensime (spacemacs//java-setup-ensime-eldoc))))
@ -252,12 +251,6 @@
(add-to-list 'flycheck-checkers 'meghanada)
(flycheck-mode))
(defun spacemacs//java-setup-meghanada-flyspell ()
"Setup Meghanada spell checking.")
(defun spacemacs//java-setup-meghanada-eldoc ()
"Setup Meghanada eldoc.")
(defun spacemacs//java-meghanada-server-livep ()
"Return non-nil if the Meghanada server is up."
(and meghanada--client-process (process-live-p meghanada--client-process)))