310 lines
10 KiB
EmacsLisp
310 lines
10 KiB
EmacsLisp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; ghc-check.el
|
|
;;;
|
|
|
|
;; Author: Kazu Yamamoto <Kazu@Mew.org>
|
|
;; Created: Mar 9, 2014
|
|
|
|
;;; Code:
|
|
|
|
(require 'ghc-func)
|
|
(require 'ghc-process)
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
;; stolen from flymake.el
|
|
(defface ghc-face-error
|
|
'((((supports :underline (:style wave)))
|
|
:underline (:style wave :color "orangered"))
|
|
(t
|
|
:inherit error))
|
|
"Face used for marking error lines."
|
|
:group 'ghc)
|
|
|
|
(defface ghc-face-warn
|
|
'((((supports :underline (:style wave)))
|
|
:underline (:style wave :color "gold"))
|
|
(t
|
|
:inherit warning))
|
|
"Face used for marking warning lines."
|
|
:group 'ghc)
|
|
|
|
(defvar ghc-check-error-fringe (propertize "!" 'display '(left-fringe exclamation-mark)))
|
|
|
|
(defvar ghc-check-warning-fringe (propertize "?" 'display '(left-fringe question-mark)))
|
|
|
|
(defvar ghc-display-error nil)
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defun ghc-check-syntax ()
|
|
(interactive)
|
|
(ghc-with-process 'ghc-check-send 'ghc-check-callback))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(ghc-defstruct hilit-info file line msg err)
|
|
|
|
(defun ghc-check-send ()
|
|
(with-current-buffer ghc-process-original-buffer
|
|
(setq mode-line-process " -:-"))
|
|
(if ghc-check-command
|
|
(let ((opts (ghc-haskell-list-of-string ghc-hlint-options)))
|
|
(if opts
|
|
(concat "lint " opts " " ghc-process-original-file "\n")
|
|
(concat "lint " ghc-process-original-file "\n")))
|
|
(concat "check " ghc-process-original-file "\n")))
|
|
|
|
(defun ghc-haskell-list-of-string (los)
|
|
(when los
|
|
(concat "["
|
|
(mapconcat (lambda (x) (concat "\"" x "\"")) los ", ")
|
|
"]")))
|
|
|
|
(defun ghc-check-callback ()
|
|
(let ((regex "^\\([^\n\0]*\\):\\([0-9]+\\):\\([0-9]+\\): *\\(.+\\)")
|
|
info infos)
|
|
(while (re-search-forward regex nil t)
|
|
(let* ((file (match-string 1))
|
|
(line (string-to-number (match-string 2)))
|
|
;; don't take column to make multiple same errors to a single.
|
|
(msg (match-string 4))
|
|
(err (not (string-match "^Warning" msg)))
|
|
(info (ghc-make-hilit-info
|
|
:file file
|
|
:line line
|
|
:msg msg
|
|
:err err)))
|
|
(unless (member info infos)
|
|
(setq infos (cons info infos)))))
|
|
(setq infos (nreverse infos))
|
|
(cond
|
|
(infos
|
|
(let ((file ghc-process-original-file)
|
|
(buf ghc-process-original-buffer))
|
|
(ghc-check-highlight-original-buffer file buf infos)))
|
|
(t
|
|
(with-current-buffer ghc-process-original-buffer
|
|
(remove-overlays (point-min) (point-max) 'ghc-check t))))
|
|
(with-current-buffer ghc-process-original-buffer
|
|
(let ((len (length infos)))
|
|
(if (= len 0)
|
|
(setq mode-line-process "")
|
|
(let* ((errs (ghc-filter 'ghc-hilit-info-get-err infos))
|
|
(elen (length errs))
|
|
(wlen (- len elen)))
|
|
(setq mode-line-process (format " %d:%d" elen wlen))))))))
|
|
|
|
(defun ghc-check-highlight-original-buffer (ofile buf infos)
|
|
(with-current-buffer buf
|
|
(remove-overlays (point-min) (point-max) 'ghc-check t)
|
|
(save-excursion
|
|
(goto-char (point-min))
|
|
(dolist (info infos)
|
|
(let ((line (ghc-hilit-info-get-line info))
|
|
(msg (ghc-hilit-info-get-msg info))
|
|
(file (ghc-hilit-info-get-file info))
|
|
(err (ghc-hilit-info-get-err info))
|
|
beg end ovl)
|
|
;; FIXME: This is the Shlemiel painter's algorithm.
|
|
;; If this is a bottleneck for a large code, let's fix.
|
|
(goto-char (point-min))
|
|
(cond
|
|
((string= ofile file)
|
|
(forward-line (1- line))
|
|
(while (eq (char-after) 32) (forward-char))
|
|
(setq beg (point))
|
|
(forward-line)
|
|
(setq end (1- (point))))
|
|
(t
|
|
(setq beg (point))
|
|
(forward-line)
|
|
(setq end (point))))
|
|
(setq ovl (make-overlay beg end))
|
|
(overlay-put ovl 'ghc-check t)
|
|
(overlay-put ovl 'ghc-file file)
|
|
(overlay-put ovl 'ghc-msg msg)
|
|
(let ((echo (ghc-replace-character msg ?\0 ?\n)))
|
|
(overlay-put ovl 'help-echo echo))
|
|
(let ((fringe (if err ghc-check-error-fringe ghc-check-warning-fringe))
|
|
(face (if err 'ghc-face-error 'ghc-face-warn)))
|
|
(overlay-put ovl 'before-string fringe)
|
|
(overlay-put ovl 'face face)))))))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defun ghc-display-errors ()
|
|
(interactive)
|
|
(let* ((ovls (ghc-check-overlay-at (point)))
|
|
(errs (mapcar (lambda (ovl) (overlay-get ovl 'ghc-msg)) ovls)))
|
|
(if (null ovls)
|
|
(message "No errors or warnings")
|
|
(ghc-display
|
|
nil
|
|
(lambda ()
|
|
(insert (overlay-get (car ovls) 'ghc-file) "\n\n")
|
|
(mapc (lambda (x) (insert x "\n\n")) errs))))))
|
|
|
|
(defun ghc-display-errors-to-minibuf ()
|
|
(interactive)
|
|
(let* ((ovls (ghc-check-overlay-at (point)))
|
|
(errs (mapcar (lambda (ovl) (overlay-get ovl 'ghc-msg)) ovls))
|
|
(old-max-mini-window-height max-mini-window-height))
|
|
(setq max-mini-window-height 0.95)
|
|
(if (null ovls)
|
|
(message "No errors or warnings")
|
|
(progn
|
|
(message "%s\n\n%s\n" (overlay-get (car ovls) 'ghc-file)
|
|
(mapconcat (lambda (x) (replace-regexp-in-string "\0" "\n" x)) errs "\n"))))
|
|
(setq old-max-mini-window-height)))
|
|
|
|
(defun ghc-check-overlay-at (p)
|
|
(let ((ovls (overlays-at p)))
|
|
(ghc-filter (lambda (ovl) (overlay-get ovl 'ghc-check)) ovls)))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defun ghc-goto-prev-error ()
|
|
(interactive)
|
|
(let* ((here (point))
|
|
(ovls0 (ghc-check-overlay-at here))
|
|
(end (if ovls0 (overlay-start (car ovls0)) here))
|
|
(ovls1 (overlays-in (point-min) end))
|
|
(ovls2 (ghc-filter (lambda (ovl) (overlay-get ovl 'ghc-check)) ovls1))
|
|
(pnts (mapcar 'overlay-start ovls2)))
|
|
(if pnts (goto-char (apply 'max pnts))))
|
|
(cond
|
|
((eq ghc-display-error 'minibuffer) (ghc-display-errors-to-minibuf))
|
|
((eq ghc-display-error 'other-buffer) (ghc-display-errors))))
|
|
|
|
(defun ghc-goto-next-error ()
|
|
(interactive)
|
|
(let* ((here (point))
|
|
(ovls0 (ghc-check-overlay-at here))
|
|
(beg (if ovls0 (overlay-end (car ovls0)) here))
|
|
(ovls1 (overlays-in beg (point-max)))
|
|
(ovls2 (ghc-filter (lambda (ovl) (overlay-get ovl 'ghc-check)) ovls1))
|
|
(pnts (mapcar 'overlay-start ovls2)))
|
|
(if pnts (goto-char (apply 'min pnts))))
|
|
(cond
|
|
((eq ghc-display-error 'minibuffer) (ghc-display-errors-to-minibuf))
|
|
((eq ghc-display-error 'other-buffer) (ghc-display-errors))))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defun ghc-check-insert-from-warning ()
|
|
(interactive)
|
|
(dolist (data (mapcar (lambda (ovl) (overlay-get ovl 'ghc-msg)) (ghc-check-overlay-at (point))))
|
|
(save-excursion
|
|
(cond
|
|
((string-match "Inferred type: \\|no type signature:" data)
|
|
(beginning-of-line)
|
|
(insert-before-markers (ghc-extract-type data) "\n"))
|
|
((string-match "lacks an accompanying binding" data)
|
|
(beginning-of-line)
|
|
(when (looking-at "^\\([^ ]+\\) *::")
|
|
(save-match-data
|
|
(forward-line)
|
|
(if (not (bolp)) (insert "\n")))
|
|
(insert (match-string 1) " = undefined\n")))
|
|
;; GHC 7.8 uses Unicode for single-quotes.
|
|
((string-match "Not in scope: type constructor or class `\\([^'\n\0]+\\)'" data)
|
|
(let ((sym (match-string 1 data)))
|
|
(ghc-ins-mod sym)))
|
|
((string-match "Not in scope: `\\([^'\n\0]+\\)'" data)
|
|
(let ((sym (match-string 1 data)))
|
|
(if (or (string-match "\\." sym) ;; qualified
|
|
(y-or-n-p (format "Import module for %s?" sym)))
|
|
(ghc-ins-mod sym)
|
|
(unless (re-search-forward "^$" nil t)
|
|
(goto-char (point-max))
|
|
(insert "\n"))
|
|
(insert "\n" (ghc-enclose sym) " = undefined\n"))))
|
|
((string-match "Pattern match(es) are non-exhaustive" data)
|
|
(let* ((fn (ghc-get-function-name))
|
|
(arity (ghc-get-function-arity fn)))
|
|
(ghc-insert-underscore fn arity)))
|
|
((string-match "Found:\0[ ]*\\([^\0]+\\)\0Why not:\0[ ]*\\([^\0]+\\)" data)
|
|
(let ((old (match-string 1 data))
|
|
(new (match-string 2 data)))
|
|
(beginning-of-line)
|
|
(when (search-forward old nil t)
|
|
(let ((end (point)))
|
|
(search-backward old nil t)
|
|
(delete-region (point) end))
|
|
(insert new))))
|
|
(t
|
|
(message "Nothing was done"))))))
|
|
|
|
(defun ghc-extract-type (str)
|
|
(with-temp-buffer
|
|
(insert str)
|
|
(goto-char (point-min))
|
|
(when (re-search-forward "Inferred type: \\|no type signature:\\( \\|\0 +\\)?" nil t)
|
|
(delete-region (point-min) (point)))
|
|
(when (re-search-forward " forall [^.]+\\." nil t)
|
|
(replace-match ""))
|
|
(while (re-search-forward "\0 +" nil t)
|
|
(replace-match " "))
|
|
(goto-char (point-min))
|
|
(while (re-search-forward "\\[Char\\]" nil t)
|
|
(replace-match "String"))
|
|
(buffer-substring-no-properties (point-min) (point-max))))
|
|
|
|
(defun ghc-get-function-name ()
|
|
(save-excursion
|
|
(beginning-of-line)
|
|
(when (looking-at "\\([^ ]+\\) ")
|
|
(match-string 1))))
|
|
|
|
(defun ghc-get-function-arity (fn)
|
|
(when fn
|
|
(save-excursion
|
|
(let ((regex (format "^%s *::" (regexp-quote fn))))
|
|
(when (re-search-backward regex nil t)
|
|
(ghc-get-function-arity0))))))
|
|
|
|
(defun ghc-get-function-arity0 ()
|
|
(let ((end (save-excursion (end-of-line) (point)))
|
|
(arity 0))
|
|
(while (search-forward "->" end t)
|
|
(setq arity (1+ arity)))
|
|
arity))
|
|
|
|
(defun ghc-insert-underscore (fn ar)
|
|
(when fn
|
|
(let ((arity (or ar 1)))
|
|
(save-excursion
|
|
(goto-char (point-max))
|
|
(re-search-backward (format "^%s *::" (regexp-quote fn)))
|
|
(forward-line)
|
|
(re-search-forward "^$" nil t)
|
|
(insert fn)
|
|
(dotimes (i arity)
|
|
(insert " _"))
|
|
(insert " = error \"" fn "\"")))))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defun ghc-jump-file ()
|
|
(interactive)
|
|
(let* ((ovl (car (ghc-check-overlay-at 1)))
|
|
(file (if ovl (overlay-get ovl 'ghc-file))))
|
|
(if file (find-file file))))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defvar ghc-hlint-options nil "*Hlint options")
|
|
|
|
(defvar ghc-check-command nil)
|
|
|
|
(defun ghc-toggle-check-command ()
|
|
(interactive)
|
|
(setq ghc-check-command (not ghc-check-command))
|
|
(if ghc-check-command
|
|
(message "Syntax check with hlint")
|
|
(message "Syntax check with GHC")))
|
|
|
|
(provide 'ghc-check)
|