/usr/share/emacs/site-lisp/ghc-mod/ghc-process.el is in ghc-mod-el 5.4.0.0-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; ghc-process.el
;;;
;; Author: Kazu Yamamoto <Kazu@Mew.org>
;; Created: Mar 9, 2014
;;; Code:
(require 'ghc-func)
(defvar ghc-debug-options nil)
;; (setq ghc-debug-options '("-v9"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar ghc-process-running nil)
(defvar ghc-process-file-mapping nil)
(defvar-local ghc-process-process-name nil)
(defvar-local ghc-process-original-buffer nil)
(defvar-local ghc-process-original-file nil)
(defvar-local ghc-process-callback nil)
(defvar-local ghc-process-hook nil)
(defvar-local ghc-process-root nil)
(defvar ghc-command "ghc-mod")
(defvar ghc-error-buffer "*GHC Error*")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun ghc-get-project-root ()
(ghc-run-ghc-mod '("root")))
(defun ghc-with-process (cmd callback &optional hook1 hook2 skip-map-file)
(unless ghc-process-process-name
(setq ghc-process-process-name (ghc-get-project-root)))
(when (and ghc-process-process-name (not ghc-process-running))
(setq ghc-process-running t)
(if hook1 (funcall hook1))
(let* ((cbuf (current-buffer))
(name ghc-process-process-name)
(root (file-name-as-directory ghc-process-process-name))
(buf (get-buffer-create (concat " ghc-mod:" name)))
(file (buffer-file-name))
(cpro (get-process name)))
;; setting root in the original buffer, sigh
(setq ghc-process-root root)
(ghc-with-current-buffer buf
(setq ghc-process-original-buffer cbuf)
(setq ghc-process-original-file file)
(setq ghc-process-hook hook2)
(setq ghc-process-root root)
(let ((pro (ghc-get-process cpro name buf root))
(map-cmd (format "map-file %s\n" file)))
;; map-file
(unless skip-map-file
(setq ghc-process-file-mapping t)
(setq ghc-process-callback nil)
(erase-buffer)
(when ghc-debug
(ghc-with-debug-buffer
(insert (format "%% %s" map-cmd))
(insert "CONTENTS + EOT\n")))
(process-send-string pro map-cmd)
(with-current-buffer cbuf
(save-restriction
(widen)
(process-send-region pro (point-min) (point-max))))
(process-send-string pro "\004\n")
(condition-case nil
(let ((inhibit-quit nil))
(while ghc-process-file-mapping
(accept-process-output pro 0.1 nil t)))
(quit
(setq ghc-process-running nil)
(setq ghc-process-file-mapping nil))))
;; command
(setq ghc-process-callback callback)
(erase-buffer)
(when ghc-debug
(ghc-with-debug-buffer
(insert (format "%% %s" cmd))))
(process-send-string pro cmd)
pro)))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun ghc-get-process (cpro name buf root)
(cond
((not cpro)
(ghc-start-process name buf root))
((not (eq (process-status cpro) 'run))
(delete-process cpro)
(ghc-start-process name buf root))
(t cpro)))
(defun ghc-start-process (name buf root)
(let* ((default-directory root)
(process-connection-type nil) ;; using PIPE due to ^D
(opts (append ghc-debug-options
'("-b" "\n" "-l" "--line-prefix=O: ,E: ")
(ghc-make-ghc-options)
'("legacy-interactive")))
(pro (apply 'start-process name buf ghc-command opts)))
(set-process-filter pro 'ghc-process-filter)
(set-process-sentinel pro 'ghc-process-sentinel)
(set-process-query-on-exit-flag pro nil)
pro))
(defun ghc-process-filter (process string)
(let* ((pbuf (process-buffer process))
(tbufname (concat " tmp " (buffer-name pbuf)))
tbuf)
(if (not (get-buffer pbuf))
(setq ghc-process-running nil) ;; just in case
(ghc-with-current-buffer pbuf
(when ghc-debug
(ghc-with-debug-buffer
(insert string)))
(with-current-buffer (get-buffer-create tbufname)
(setq tbuf (current-buffer))
(goto-char (point-max))
(insert string)
(goto-char (point-min))
(let ((cont t) end out)
(while (and cont (not (eobp)) ghc-process-running)
(cond
((looking-at "^O: ")
(setq out t))
((looking-at "^E: ")
(setq out nil))
(t
(setq cont nil)))
(when cont
(forward-line)
(unless (bolp) (setq cont nil)))
(when cont
(delete-region 1 4)
(setq end (point))
(if out
(with-current-buffer pbuf
(goto-char (point-max))
(insert-buffer-substring tbuf 1 end))
(with-current-buffer (get-buffer-create ghc-error-buffer)
(setq buffer-read-only t)
(let* ((buffer-read-only nil)
(inhibit-read-only t)
(cbuf (current-buffer))
cwin)
(unless (get-buffer-window cbuf) (display-buffer cbuf))
(setq cwin (get-buffer-window cbuf))
(with-selected-window cwin
(goto-char (point-max))
(insert-buffer-substring tbuf 1 end)
(set-buffer-modified-p nil))
(redisplay))))
(delete-region 1 end)))))
(goto-char (point-max))
(forward-line -1)
(cond
((looking-at "^OK$")
(delete-region (point) (point-max))
(setq ghc-process-file-mapping nil)
(when ghc-process-callback
(if ghc-process-hook (funcall ghc-process-hook))
(goto-char (point-min))
(funcall ghc-process-callback 'ok)
(setq ghc-process-running nil)))
((looking-at "^NG ")
(funcall ghc-process-callback 'ng)
(setq ghc-process-running nil)))))))
(defun ghc-process-sentinel (_process _event)
(setq ghc-process-running nil)
(setq ghc-process-file-mapping nil))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar ghc-process-rendezvous nil)
(defvar ghc-process-num-of-results nil)
(defvar ghc-process-results nil)
(defun ghc-sync-process (cmd &optional n hook skip-map-file)
(unless ghc-process-running
(setq ghc-process-rendezvous nil)
(setq ghc-process-results nil)
(setq ghc-process-num-of-results (or n 1))
(let ((pro (ghc-with-process cmd 'ghc-process-callback nil hook skip-map-file)))
;; ghc-process-running is now t.
;; But if the process exits abnormally, it is set to nil.
(condition-case nil
(let ((inhibit-quit nil))
(while (and (null ghc-process-rendezvous) ghc-process-running)
(accept-process-output pro 0.1 nil t)))
(quit
(setq ghc-process-running nil))))
ghc-process-results))
(defun ghc-process-callback (status)
(cond
((eq status 'ok)
(let* ((n ghc-process-num-of-results)
(ret (if (= n 1)
(ghc-read-lisp-this-buffer)
(ghc-read-lisp-list-this-buffer n))))
(setq ghc-process-results ret)))
(t
(setq ghc-process-results nil)))
(setq ghc-process-num-of-results nil)
(setq ghc-process-rendezvous t))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun ghc-kill-process ()
(interactive)
(when (eq major-mode 'haskell-mode)
(let* ((name ghc-process-process-name)
(cpro (if name (get-process name))))
(if (not cpro)
(message "No ghc-mod process")
(delete-process cpro)
(message "ghc-mod process was killed")))))
(provide 'ghc-process)
|