spacemacs/layers/+lang/haskell/funcs.el
Eivind Fonn 928983da47 Refactor jump to definition
This commit defines:

- spacemacs-default-jump-handlers: a list of functions that can jump to
  definition in ALL modes.

- spacemacs-jump-handlers-MODE: a list of functions that can jump to
  definition in MODE.

- spacemacs-jump-handlers: a buffer-local list of functions that can
  jump to definition. This is made up of the values of the two previous
  variables whenever a given major mode is activated.

- spacemacs/jump-to-definition: a function that tries each function in
  spacemacs-jump-handlers in order, and stops when one of them takes us
  somewhere new.

- spacemacs|define-jump-handlers: a macro that
  * defines spacemacs-jump-handlers-MODE, possibly filled with initial
    functions
  * defines a function that is added to the hook of the given MODE
  * binds “SPC m g g” of that MODE to spacemacs/jump-to-definition

This is an attempt to harmonize all the different approaches to jumping.
Specifically,

- Existing intelligent jump packages that work for only a single mode
  should go to the beginning of spacemacs-jump-handlers-MODE. E.g.
  anaconda for python, ensime for scala, etc.

- Packages like gtags that work for several modes (but potentially not
  all) and which is dumber than the intelligent jumpers should go the
  the END of spacemacs-jump-handlers-MODE.

- Packages like dumb-jump that work for all modes should go to
  spacemacs-default-jump-handlers.

In all cases the order of the jump handlers in each list should be from
most to least intelligent.

Fixes #6619
2016-08-22 15:08:25 +02:00

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;;; funcs.el --- Haskell Layer funcs File for Spacemacs
;;
;; Copyright (c) 2012-2016 Sylvain Benner & Contributors
;;
;; Author: Sylvain Benner <sylvain.benner@gmail.com>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;;; License: GPLv3
(defun spacemacs-haskell//setup-completion-backend ()
"Conditionally setup haskell completion backend."
(unless (eq haskell-completion-backend 'ghc-mod)
(add-hook 'haskell-mode-hook 'interactive-haskell-mode))
(when (configuration-layer/package-usedp 'company)
(pcase haskell-completion-backend
(`ghci (spacemacs-haskell//setup-ghci))
(`ghc-mod (spacemacs-haskell//setup-ghc-mod))
(`intero (spacemacs-haskell//setup-intero)))))
(defun spacemacs-haskell//setup-ghci ()
(add-to-list 'company-backends-haskell-mode
'(company-ghci company-dabbrev-code company-yasnippet)))
(defun spacemacs-haskell//setup-ghc-mod ()
(add-to-list 'company-backends-haskell-mode
'(company-ghc company-dabbrev-code company-yasnippet))
(ghc-init)
(dolist (mode haskell-modes)
(spacemacs/declare-prefix-for-mode mode "mm" "haskell/ghc-mod")
(spacemacs/set-leader-keys-for-major-mode mode
"mt" 'ghc-insert-template-or-signature
"mu" 'ghc-initial-code-from-signature
"ma" 'ghc-auto
"mf" 'ghc-refine
"me" 'ghc-expand-th
"mn" 'ghc-goto-next-hole
"mp" 'ghc-goto-prev-hole
"m>" 'ghc-make-indent-deeper
"m<" 'ghc-make-indent-shallower
"hi" 'ghc-show-info
"ht" 'ghc-show-type))
(when (configuration-layer/package-usedp 'flycheck)
;; remove overlays from ghc-check.el if flycheck is enabled
(set-face-attribute 'ghc-face-error nil :underline nil)
(set-face-attribute 'ghc-face-warn nil :underline nil)))
(defun spacemacs-haskell//setup-intero ()
(add-to-list 'company-backends-haskell-mode
'(company-intero company-dabbrev-code company-yasnippet))
(push 'intero-goto-definition spacemacs-jump-handlers)
(intero-mode)
(dolist (mode haskell-modes)
(spacemacs/set-leader-keys-for-major-mode mode
"hi" 'intero-info
"ht" 'intero-type-at
"hT" 'haskell-intero/insert-type
"sb" 'intero-repl-load))
(dolist (mode (cons 'haskell-cabal-mode haskell-modes))
(spacemacs/set-leader-keys-for-major-mode mode
"sc" nil
"ss" 'haskell-intero/display-repl
"sS" 'haskell-intero/pop-to-repl))
(dolist (mode (append haskell-modes '(haskell-cabal-mode intero-repl-mode)))
(spacemacs/declare-prefix-for-mode mode "mi" "haskell/intero")
(spacemacs/set-leader-keys-for-major-mode mode
"ic" 'intero-cd
"id" 'intero-devel-reload
"ik" 'intero-destroy
"il" 'intero-list-buffers
"ir" 'intero-restart
"it" 'intero-targets))
(evil-define-key '(insert normal) intero-mode-map
(kbd "M-.") 'intero-goto-definition))
;; Intero functions
(defun haskell-intero/insert-type ()
(interactive)
(intero-type-at :insert))
(defun haskell-intero/display-repl (&optional prompt-options)
(interactive "P")
(let ((buffer (intero-repl-buffer prompt-options)))
(unless (get-buffer-window buffer 'visible)
(display-buffer buffer))))
(defun haskell-intero/pop-to-repl (&optional prompt-options)
(interactive "P")
(pop-to-buffer (intero-repl-buffer prompt-options)))
(defun haskell-intero//preserve-focus (f &rest args)
(let ((buffer (current-buffer)))
(apply f args)
(pop-to-buffer buffer)))