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;;; bodil-haskell.el --- FIRE ALL MONAD TRANSFORMERS
(package-require 'haskell-mode)
(package-require 'ghc)
(package-require 'shm)
;; auto-complete source using ghc-doc
(defun ac-haskell-candidates ()
(let ((pattern (buffer-substring (ghc-completion-start-point) (point)))
(symbols (ghc-select-completion-symbol)))
(all-completions pattern symbols)))
;; Setup auto-complete for haskell-mode
(eval-after-load "auto-complete"
'(progn
(add-to-list 'ac-modes 'haskell-mode)
(ac-define-source ghc
'((candidates . ac-haskell-candidates)))))
;; Setup haskell-mode hooks
(eval-after-load "haskell-mode"
'(custom-set-variables
'(haskell-mode-hook
'(turn-on-haskell-indentation
turn-on-haskell-doc-mode
ghc-init
structured-haskell-mode
(lambda () (add-to-list 'ac-sources 'ac-source-ghc))))))
;; Use Unicode arrows in place of ugly ASCII arrows
(require 'bodil-defuns)
(font-lock-replace-symbol 'haskell-mode "\\(->\\)" "")
(font-lock-replace-symbol 'haskell-mode "\\(<-\\)" "")
(font-lock-replace-symbol 'haskell-mode "\\(=>\\)" "")
(font-lock-replace-symbol 'haskell-mode "\\(<=\\)" "")
(define-key haskell-mode-map (kbd "") (lambda () (interactive) (insert "->")))
(define-key haskell-mode-map (kbd "") (lambda () (interactive) (insert "<-")))
(define-key haskell-mode-map (kbd "") (lambda () (interactive) (insert "=>")))
(define-key haskell-mode-map (kbd "") (lambda () (interactive) (insert "<=")))
;; Add a keybinding for (inferior-haskell-type t) to insert
;; inferred type signature for function at point
(define-key haskell-mode-map (kbd "C-c C-s")
(lambda () (interactive)
(let ((sym (haskell-ident-at-point)))
(inferior-haskell-type sym t))))
;; Put ghc-show-info in a popup
(package-require 'popup)
(defun ghc-show-info-popup ()
(interactive)
(popup-tip (ghc-get-info (ghc-things-at-point))
:around t :scroll-bar t))
(define-key haskell-mode-map (kbd "C-c TAB") 'ghc-show-info-popup)
(define-key haskell-mode-map (kbd "C-c C-i") 'ghc-show-info-popup)
(define-key haskell-mode-map (kbd "C-c C-S-i") 'ghc-show-info)
;; Use standard keybinding for inferior-haskell-find-definition
(define-key haskell-mode-map (kbd "M-.")
(lambda () (interactive)
(inferior-haskell-find-definition (haskell-ident-at-point))))
;; Run test suite
(defun haskell-mode-run-test-suite ()
(interactive)
(require 'compile)
(compile (concat "cd " (projectile-project-root) "; cabal test")))
(define-key haskell-mode-map (kbd "C-c C-,") 'haskell-mode-run-test-suite)
;;; Idris (for want of a better place to put it)
(package-require 'idris-mode)
(add-to-list 'auto-mode-alist '("\\.idr$" . idris-mode))
;;; PureScript cheat mode
(define-derived-mode purescript-mode haskell-mode "PureScript"
"Major mode for PureScript")
(add-to-list 'auto-mode-alist (cons "\\.purs\\'" 'purescript-mode))
(provide 'bodil-haskell)
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