102 lines
4.6 KiB
Org Mode
102 lines
4.6 KiB
Org Mode
#+TITLE: Ocaml layer
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[[file:img/ocaml.png]]
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* Table of Contents :TOC_4_gh:noexport:
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- [[#description][Description]]
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- [[#features][Features:]]
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- [[#install][Install]]
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- [[#layer][Layer]]
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- [[#using-merlin-for-error-reporting][Using merlin for error reporting]]
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- [[#opam-packages][OPAM packages]]
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- [[#key-bindings][Key bindings]]
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- [[#repl-utop][REPL (utop)]]
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- [[#layer-improvements-list][layer improvements list]]
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* Description
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This is a very basic layer for editing ocaml files.
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** Features:
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- Syntax highlighting (major-mode) via [[https://github.com/ocaml/tuareg][tuareg-mode]]
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- Error reporting, completion and type display via [[https://github.com/ocaml/merlin][merlin]]
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- auto-completion with company mode via [[https://github.com/ocaml/merlin][merlin]]
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- syntax-checking via [[https://github.com/flycheck/flycheck-ocaml][flycheck-ocaml]] (or alternatively [[https://github.com/ocaml/merlin][merlin]])
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* Install
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** Layer
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To use this configuration layer, add it to your =~/.spacemacs=. You will need to
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add =ocaml= to the existing =dotspacemacs-configuration-layers= list in this
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file.
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** Using merlin for error reporting
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By default [[https://github.com/flycheck/flycheck-ocaml][flycheck-ocaml]] is used for error reporting when the
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=syntax-checking= layer is also enabled as this is common throughout spacemacs.
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You can disable this and switch back to [[https://github.com/ocaml/merlin][merlin]]’s default error reporting method
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by adding [[https://github.com/flycheck/flycheck-ocaml][flycheck-ocaml]] to your excluded packages list in =.spacemacs=:
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#+BEGIN_SRC emacs-lisp
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dotspacemacs-excluded-packages '(... flycheck-ocaml ... )
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#+END_SRC
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** OPAM packages
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This layer requires some [[http://opam.ocaml.org][opam]] packages:
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- =merlin= for auto-completion
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- =utop=
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- =ocp-indent=
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To install them, use the following command:
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#+BEGIN_SRC sh
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opam install merlin utop ocp-indent
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#+END_SRC
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Make sure opam is initialized and configured.
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#+BEGIN_SRC sh
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opam init
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opam config setup -a
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#+END_SRC
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* Key bindings
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| Key binding | Description |
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|-------------+----------------------------------------------------------|
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| ~SPC m =~ | Indent buffer. |
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| ~SPC m c c~ | Compile |
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| ~SPC m c p~ | Check .merlin for errors |
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| ~SPC m c r~ | Refresh changed .cmis in merlin |
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| ~SPC m e C~ | Check for errors in current buffer |
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| ~SPC m e n~ | Jump to next error |
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| ~SPC m e N~ | Jump back to previous error |
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| ~SPC m g a~ | Switch ML <-> MLI |
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| ~SPC m g b~ | Go back to the last position where the user did a locate |
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| ~SPC m g g~ | Locate the identifier under point (same window) |
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| ~SPC m g G~ | Locate the identifier under point (different window) |
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| ~SPC m g o~ | List occurrences for identifier under point |
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| ~SPC m g l~ | Prompt for identifier and locate |
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| ~SPC m g i~ | Prompt for module name and switch to ML file |
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| ~SPC m g I~ | Prompt for module name and switch to MLI file |
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| ~SPC m h h~ | Document the identifier under point |
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| ~SPC m h t~ | Highlight identifier under cursor and print its type |
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| ~SPC m h T~ | Prompt for expression and show its type |
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| ~SPC m r d~ | Case analyze the current enclosing |
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** REPL (utop)
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| Key binding | Description |
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|-------------+------------------------------------------------------------------|
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| ~SPC m s b~ | Send buffer to the REPL |
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| ~SPC m s B~ | Send buffer to the REPL and switch to the REPL in =insert state= |
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| ~SPC m s i~ | Start a REPL |
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| ~SPC m s p~ | Send phrase to the REPL |
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| ~SPC m s P~ | Send phrase to the REPL and switch to the REPL in =insert state= |
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| ~SPC m s r~ | Send region to the REPL |
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| ~SPC m s R~ | Send region to the REPL and switch to the REPL in =insert state= |
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| ~C-j~ | (in REPL) next item in history |
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| ~C-k~ | (in REPL) previous item in history |
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* TODO layer improvements list
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1. Add more proper spacemacs key bindings for basic merlin tasks
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2. Add proper key bindings for ocamldebug
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3. Add more key bindings for tuareg-mode
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