63 lines
1.7 KiB
EmacsLisp
63 lines
1.7 KiB
EmacsLisp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; ghc-ins-mod.el
|
|
;;;
|
|
|
|
;; Author: Kazu Yamamoto <Kazu@Mew.org>
|
|
;; Created: Dec 27, 2011
|
|
|
|
;;; Code:
|
|
|
|
(defvar ghc-hoogle-command "hoogle")
|
|
|
|
(defun ghc-insert-module ()
|
|
(interactive)
|
|
(ghc-executable-find ghc-hoogle-command
|
|
(let* ((expr0 (ghc-things-at-point))
|
|
(expr (ghc-read-expression expr0)))
|
|
(let ((mods (ghc-function-to-modules expr)))
|
|
(if (null mods)
|
|
(message "No module guessed")
|
|
(let* ((first (car mods))
|
|
(mod (if (= (length mods) 1)
|
|
first
|
|
(completing-read "Module name: " mods nil t first))))
|
|
(save-excursion
|
|
(ghc-goto-module-position)
|
|
(insert "import " mod "\n"))))))))
|
|
|
|
(defun ghc-goto-module-position ()
|
|
(goto-char (point-max))
|
|
(if (re-search-backward "^import" nil t)
|
|
(ghc-goto-empty-line)
|
|
(if (re-search-backward "^module" nil t)
|
|
(ghc-goto-empty-line)
|
|
(goto-char (point-min)))))
|
|
|
|
(defun ghc-goto-empty-line ()
|
|
(unless (re-search-forward "^$" nil t)
|
|
(forward-line)))
|
|
|
|
;; To avoid Data.Functor
|
|
(defvar ghc-applicative-operators '("<$>" "<$" "<*>" "<**>" "<*" "*>" "<|>"))
|
|
|
|
(defun ghc-function-to-modules (fn)
|
|
(if (member fn ghc-applicative-operators)
|
|
'("Control.Applicative")
|
|
(ghc-function-to-modules-hoogle fn)))
|
|
|
|
(defun ghc-function-to-modules-hoogle (fn)
|
|
(with-temp-buffer
|
|
(let* ((fn1 (if (string-match "^[a-zA-Z0-9'_]+$" fn)
|
|
fn
|
|
(concat "(" fn ")")))
|
|
(regex (concat "^\\([a-zA-Z0-9.]+\\) " fn1 " "))
|
|
ret)
|
|
(ghc-call-process ghc-hoogle-command nil t nil "search" fn1)
|
|
(goto-char (point-min))
|
|
(while (re-search-forward regex nil t)
|
|
(setq ret (cons (match-string 1) ret)))
|
|
(nreverse ret))))
|
|
|
|
(provide 'ghc-ins-mod)
|