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spacemacs/contrib/!lang/ocaml/README.org

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#+TITLE: Ocaml contribution layer for Spacemacs
[[file:img/ocaml.png]]
* Table of Content :TOC@4:
- [[#description][Description]]
- [[#features][Features:]]
- [[#install][Install]]
- [[#layer][Layer]]
- [[#opam-packages][OPAM packages]]
- [[#key-bindings][Key Bindings]]
- [[#repl-utop][REPL (utop)]]
- [[#todos][TODOS]]
- [[#todo-add-more-proper-spacemacs-key-bindings-for-basic-merlin-tasks][TODO Add more proper spacemacs key-bindings for basic merlin tasks]]
- [[#todo-add-proper-keybindings-for-ocamldebug][TODO Add proper keybindings for ocamldebug]]
- [[#todo-add-more-keybindings-for-tuareg-mode][TODO Add more keybindings for tuareg-mode]]
* Description
This is a very basic layer for editing ocaml files.
** Features:
- Syntax highlighting (major-mode) via [[https://github.com/ocaml/tuareg][tuareg-mode]]
- Error reporting, completion and type display via [[https://github.com/the-lambda-church/merlin][merlin]]
- auto-completion with company mode via [[https://github.com/the-lambda-church/merlin][merlin]]
- syntax-checking via [[https://github.com/diml/utop][flycheck-ocaml]]
* Install
** Layer
To use this contribution add it to your =~/.spacemacs=
#+BEGIN_SRC emacs-lisp
(setq-default dotspacemacs-configuration-layers '(ocaml))
#+END_SRC
** OPAM packages
This layer requires some [[http://opam.ocaml.org][opam]] packages:
- =merlin= for auto-completion
- =utop=
- =ocp-indent=
To install them, use the following command:
#+BEGIN_SRC sh
opam install merlin utop ocp-indent
#+END_SRC
* Key Bindings
| Key Binding | Description |
|-------------+----------------------------------------------------------|
| ~SPC m c c~ | Compile |
| ~SPC m c p~ | Check .merlin for errors |
| ~SPC m c r~ | Refresh changed .cmis in merlin |
| ~SPC m e C~ | Check for errors in current buffer |
| ~SPC m e n~ | Jump to next error |
| ~SPC m e N~ | Jump back to previous error |
| ~SPC m g a~ | Switch ML <-> MLI |
| ~SPC m g b~ | Go back to the last position where the user did a locate |
| ~SPC m g g~ | Locate the identifier under point (same window) |
| ~SPC m g G~ | Locate the identifier under point (different window) |
| ~SPC m g l~ | Prompt for identifier and locate |
| ~SPC m g i~ | Prompt for module name and switch to ML file |
| ~SPC m g I~ | Prompt for module name and switch to MLI file |
| ~SPC m h h~ | Document the identifier under point |
| ~SPC m h t~ | Highlight identifier under cursor and print its type |
| ~SPC m h T~ | Prompt for expression and show its type |
| ~SPC m r d~ | Case analyze the current enclosing |
** REPL (utop)
| Key Binding | Description |
|-------------+------------------------------------------------------------------|
| ~SPC m s b~ | Send buffer to the REPL |
| ~SPC m s B~ | Send buffer to the REPL and switch to the REPL in =insert state= |
| ~SPC m s i~ | Start a REPL |
| ~SPC m s p~ | Send phrase to the REPL |
| ~SPC m s P~ | Send phrase to the REPL and switch to the REPL in =insert state= |
| ~SPC m s r~ | Send region to the REPL |
| ~SPC m s R~ | Send region to the REPL and switch to the REPL in =insert state= |
| ~C-j~ | (in REPL) next item in history |
| ~C-k~ | (in REPL) previous item in history |
* TODOS
** TODO Add more proper spacemacs key-bindings for basic merlin tasks
** TODO Add proper keybindings for ocamldebug
** TODO Add more keybindings for tuareg-mode