122 lines
3.8 KiB
EmacsLisp
122 lines
3.8 KiB
EmacsLisp
;;; lang/ocaml/config.el -*- lexical-binding: t; -*-
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(when (featurep! +lsp)
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(add-hook! '(tuareg-mode-local-vars-hook reason-mode-local-vars-hook)
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#'lsp!))
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(after! tuareg
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;; tuareg-mode has the prettify symbols itself
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(set-pretty-symbols! 'tuareg-mode :alist
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(append tuareg-prettify-symbols-basic-alist
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tuareg-prettify-symbols-extra-alist))
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;; harmless if `prettify-symbols-mode' isn't active
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(setq tuareg-prettify-symbols-full t)
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;; Use opam to set environment
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(setq tuareg-opam-insinuate t)
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(tuareg-opam-update-env (tuareg-opam-current-compiler))
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;; Spell-check comments
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(when (featurep! :checkers spell)
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(add-hook 'tuareg-mode-local-vars-hook #'flyspell-prog-mode))
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;; Ensure asterixes in block comments have at least one space of indentation
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(setq-hook! 'tuareg-mode-hook
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comment-line-break-function #'+ocaml/comment-indent-new-line)
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(map! :localleader
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:map tuareg-mode-map
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"a" #'tuareg-find-alternate-file)
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(use-package! utop
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:when (featurep! :tools eval)
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:hook (tuareg-mode . +ocaml-init-utop-h)
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:init
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(set-repl-handler! 'tuareg-mode #'utop)
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(set-eval-handler! 'tuareg-mode #'utop-eval-region)
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(defun +ocaml-init-utop-h ()
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(when (executable-find "utop")
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(utop-minor-mode)))
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:config
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(set-popup-rule! "^\\*utop\\*" :quit nil)))
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(use-package! merlin
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:unless (featurep! +lsp)
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:hook (tuareg-mode . +ocaml-init-merlin-h)
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:init
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(defun +ocaml-init-merlin-h ()
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"Activate `merlin-mode' if the ocamlmerlin executable exists."
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(when (executable-find "ocamlmerlin")
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(merlin-mode)))
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(after! tuareg
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(set-company-backend! 'tuareg-mode 'merlin-company-backend)
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(set-lookup-handlers! 'tuareg-mode :async t
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:definition #'merlin-locate
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:references #'merlin-occurrences
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:documentation #'merlin-document))
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:config
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(setq merlin-completion-with-doc t)
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(map! :localleader
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:map tuareg-mode-map
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"t" #'merlin-type-enclosing)
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(use-package! flycheck-ocaml
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:when (featurep! :checkers syntax)
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:hook (merlin-mode . +ocaml-init-flycheck-h)
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:config
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(defun +ocaml-init-flycheck-h ()
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"Activate `flycheck-ocaml`"
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;; Disable Merlin's own error checking
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(setq merlin-error-after-save nil)
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;; Enable Flycheck checker
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(flycheck-ocaml-setup)))
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(use-package! merlin-eldoc
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:hook (merlin-mode . merlin-eldoc-setup))
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(use-package! merlin-iedit
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:when (featurep! :editor multiple-cursors)
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:defer t
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:init
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(map! :map tuareg-mode-map
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:v "R" #'merlin-iedit-occurrences))
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(use-package! merlin-imenu
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:when (featurep! :emacs imenu)
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:hook (merlin-mode . merlin-use-merlin-imenu)))
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(use-package! ocp-indent
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;; must be careful to always defer this, it has autoloads that adds hooks
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;; which we do not want if the executable can't be found
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:hook (tuareg-mode . +ocaml-init-ocp-indent-h)
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:config
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(defun +ocaml-init-ocp-indent-h ()
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"Run `ocp-setup-indent', so long as the ocp-indent binary exists."
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(when (executable-find "ocp-indent")
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(ocp-setup-indent))))
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(use-package! ocamlformat
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:when (featurep! :editor format)
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:commands ocamlformat
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:hook (tuareg-mode . +ocaml-init-ocamlformat-h)
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:config
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(set-formatter! 'ocamlformat #'ocamlformat
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:modes '(caml-mode tuareg-mode))
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;; TODO Fix region-based formatting support
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(defun +ocaml-init-ocamlformat-h ()
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(setq +format-with 'ocp-indent)
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(when (and (executable-find "ocamlformat")
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(locate-dominating-file default-directory ".ocamlformat"))
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(let ((ext (file-name-extension buffer-file-name t)))
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(cond ((equal ext ".eliom")
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(setq-local ocamlformat-file-kind 'implementation))
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((equal ext ".eliomi")
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(setq-local ocamlformat-file-kind 'interface))))
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(setq +format-with 'ocamlformat))))
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