--- /dev/null
+;; Run compiler as inferior of Emacs, and parse its error messages.
+;; Copyright (C) 1985, 1986, 1988, 1989 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 1, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+(provide 'compile)
+
+(defvar compilation-error-list nil
+ "List of error message descriptors for visiting erring functions.
+Each error descriptor is a list of length two.
+Its car is a marker pointing to an error message.
+Its cadr is a marker pointing to the text of the line the message is about,
+ or nil if that is not interesting.
+The value may be t instead of a list;
+this means that the buffer of error messages should be reparsed
+the next time the list of errors is wanted.")
+
+(defvar compilation-old-error-list nil
+ "Value of `compilation-error-list' after errors were parsed.")
+
+(defvar compilation-last-error nil
+ "List describing the error found by last call to \\[next-error].
+A list of two markers (ERROR-POS CODE-POS),
+pointing to the error message and the erroneous code, respectively.
+CODE-POS can be nil, if the error message has no specific source location.")
+
+(defvar compilation-parse-errors-hook 'compilation-parse-errors
+ "Function to call (no args) to parse error messages from a compilation.
+It should read in the source files which have errors
+and set `compilation-error-list' to a list with an element
+for each error message found. See that variable for more info.")
+
+(defvar compilation-error-buffer nil
+ "Current compilation buffer for compilation error processing.")
+
+(defvar compilation-parsing-end nil
+ "Position of end of buffer when last error messages parsed.")
+
+(defvar compilation-error-message nil
+ "Message to print when no more matches for compilation-error-regexp are found")
+
+;; The filename excludes colons to avoid confusion when error message
+;; starts with digits.
+(defvar compilation-error-regexp
+ "\\([^ :\n]+\\(: *\\|, line \\|(\\)[0-9]+\\)\\|\\([0-9]+ *of *[^ \n]+\\)\\|\\(\"[^ \n]+\",L[0-9]+\\)"
+ "Regular expression for filename/linenumber in error in compilation log.")
+
+(defvar compile-window-height nil
+ "*Desired height of compilation window. nil means use Emacs default.")
+
+(defvar compile-command "make -k "
+ "Last shell command used to do a compilation; default for next compilation.
+
+Sometimes it is useful for files to supply local values for this variable.
+You might also use mode hooks to specify it in certain modes, like this:
+
+ (setq c-mode-hook
+ '(lambda () (or (file-exists-p \"makefile\") (file-exists-p \"Makefile\")
+ (progn (make-local-variable 'compile-command)
+ (setq compile-command
+ (concat \"make -k \"
+ buffer-file-name))))))")
+
+(defvar compilation-search-path '(nil)
+ "List of directories to search for source files named in error messages.
+Elements should be directory names, not file names of directories.
+nil as an element means to try the default directory.")
+
+(defun compile (command)
+ "Compile the program including the current buffer. Default: run `make'.
+Runs COMMAND, a shell command, in a separate process asynchronously
+with output going to the buffer `*compilation*'.
+You can then use the command \\[next-error] to find the next error message
+and move to the source code that caused it.
+
+To run more than one compilation at once, start one and rename the
+`*compilation*' buffer to some other name. Then start the next one."
+ (interactive (list (read-string "Compile command: " compile-command)))
+ (setq compile-command command)
+ (save-some-buffers nil nil)
+ (compile-internal compile-command "No more errors")
+ (and compile-window-height
+ (= (window-width) (screen-width))
+ (enlarge-window (- (- (screen-height) (window-height))
+ compile-window-height) nil)))
+
+(defun grep (command-args)
+ "Run grep, with user-specified args, and collect output in a buffer.
+While grep runs asynchronously, you can use the \\[next-error] command
+to find the text that grep hits refer to. It is expected that `grep-command'
+has a `-n' flag, so that line numbers are displayed for each match."
+ (interactive
+ (list (read-string (concat "Run "
+ (substring grep-command 0
+ (string-match "[\t ]+" grep-command))
+ " (with args): ")
+ (progn
+ (string-match "-n[\t ]+" grep-command)
+ (substring grep-command (match-end 0))))))
+ ;; why a redundant string-match? It might not be interactive ...
+ (setq grep-command (concat (substring grep-command 0
+ (progn
+ (string-match "-n" grep-command)
+ (match-end 0)))
+ " " command-args))
+ (compile-internal (concat grep-command " /dev/null")
+ "No more grep hits" "grep"))
+
+(defun compile-internal (command error-message
+ &optional name-of-mode parser regexp)
+ "Run compilation command COMMAND (low level interface).
+ERROR-MESSAGE is a string to print if the user asks to see another error
+and there are no more errors. Third argument NAME-OF-MODE is the name
+to display as the major mode in the `*compilation*' buffer.
+
+Fourth arg PARSER is the error parser function (nil means the default).
+Fifth arg REGEXP is the error message regexp to use (nil means the default).
+The defaults for these variables are the global values of
+ `compilation-parse-errors-hook' and `compilation-error-regexp'."
+ (save-excursion
+ (set-buffer (get-buffer-create "*compilation*"))
+ (setq buffer-read-only nil)
+ (let ((comp-proc (get-buffer-process (current-buffer))))
+ (if comp-proc
+ (if (or (not (eq (process-status comp-proc) 'run))
+ (yes-or-no-p "A compilation process is running; kill it? "))
+ (condition-case ()
+ (progn
+ (interrupt-process comp-proc)
+ (sit-for 1)
+ (delete-process comp-proc))
+ (error nil))
+ (error "Cannot have two processes in `*compilation*' at once"))))
+ ;; In case *compilation* is current buffer,
+ ;; make sure we get the global values of compilation-error-regexp, etc.
+ (kill-all-local-variables))
+ (compilation-forget-errors)
+ (start-process-shell-command "compilation" "*compilation*" command)
+ (with-output-to-temp-buffer "*compilation*"
+ (princ "cd ")
+ (princ default-directory)
+ (terpri)
+ (princ command)
+ (terpri))
+ (let* ((regexp (or regexp compilation-error-regexp))
+ (parser (or parser compilation-parse-errors-hook))
+ (thisdir default-directory)
+ (outbuf (get-buffer "*compilation*"))
+ (outwin (get-buffer-window outbuf)))
+ (if (eq outbuf (current-buffer))
+ (goto-char (point-max)))
+ (set-process-sentinel (get-buffer-process outbuf)
+ 'compilation-sentinel)
+ (save-excursion
+ (set-buffer outbuf)
+ (if (or (eq compilation-error-buffer outbuf)
+ (eq compilation-error-list t)
+ (and (null compilation-error-list)
+ (not (and (get-buffer-process compilation-error-buffer)
+ (eq (process-status compilation-error-buffer)
+ 'run)))))
+ (setq compilation-error-list t
+ compilation-error-buffer outbuf))
+ (setq default-directory thisdir)
+ (compilation-mode)
+ (set-window-start outwin (point-min))
+ (setq mode-name (or name-of-mode "Compilation"))
+ (setq buffer-read-only t)
+ (or (eq outwin (selected-window))
+ (set-window-point outwin (point-min))))))
+
+(defvar compilation-mode-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "\C-c\C-c" 'compile-goto-error)
+ map)
+ "Keymap for compilation log buffers.")
+
+(defun compilation-mode ()
+ "Major mode for compilation log buffers.
+\\<compilation-mode-map>To visit the source for a line-numbered error,
+move point to the error message line and type \\[compile-goto-error]."
+ (interactive)
+ (fundamental-mode)
+ (use-local-map compilation-mode-map)
+ (make-local-variable 'compilation-parse-errors-hook)
+ (setq compilation-parse-errors-hook parser)
+ (make-local-variable 'compilation-error-message)
+ (setq compilation-error-message error-message)
+ (make-local-variable 'compilation-error-regexp)
+ (setq compilation-error-regexp regexp)
+ (buffer-disable-undo (current-buffer))
+ (setq major-mode 'compilation-mode)
+ (setq mode-name "Compilation")
+ ;; Make log buffer's mode line show process state
+ (setq mode-line-process '(": %s")))
+
+;; Called when compilation process changes state.
+
+(defun compilation-sentinel (proc msg)
+ (cond ((null (buffer-name (process-buffer proc)))
+ ;; buffer killed
+ (set-process-buffer proc nil))
+ ((memq (process-status proc) '(signal exit))
+ (let* ((obuf (current-buffer))
+ omax opoint)
+ ;; save-excursion isn't the right thing if
+ ;; process-buffer is current-buffer
+ (unwind-protect
+ (progn
+ ;; Write something in *compilation* and hack its mode line,
+ (set-buffer (process-buffer proc))
+ (setq omax (point-max) opoint (point))
+ (goto-char (point-max))
+ (insert ?\n mode-name " " msg)
+ (forward-char -1)
+ (insert " at " (substring (current-time-string) 0 19))
+ (forward-char 1)
+ (setq mode-line-process
+ (concat ": "
+ (symbol-name (process-status proc))))
+ ;; If buffer and mode line will show that the process
+ ;; is dead, we can delete it now. Otherwise it
+ ;; will stay around until M-x list-processes.
+ (delete-process proc))
+ ;; Force mode line redisplay soon
+ (set-buffer-modified-p (buffer-modified-p)))
+ (if (and opoint (< opoint omax))
+ (goto-char opoint))
+ (set-buffer obuf)))))
+
+(defun kill-compilation ()
+ "Kill the process made by the \\[compile] command."
+ (interactive)
+ (let ((buffer
+ (if (assq 'compilation-parse-errors-hook (buffer-local-variables))
+ (current-buffer)
+ (get-buffer "*compilation*"))))
+ (if (get-buffer-process buffer)
+ (interrupt-process (get-buffer-process buffer)))))
+
+;; Reparse errors or parse more/new errors, if appropriate.
+(defun compile-reinitialize-errors (argp)
+ ;; If we are out of errors, or if user says "reparse",
+ ;; or if we are in a different buffer from the known errors,
+ ;; discard the info we have, to force reparsing.
+ (if (or (eq compilation-error-list t)
+ (consp argp)
+ (if (assq 'compilation-parse-errors-hook (buffer-local-variables))
+ (not (eq compilation-error-buffer
+ (setq compilation-error-buffer (current-buffer))))))
+ (progn (compilation-forget-errors)
+ (setq compilation-parsing-end 1)))
+ (if compilation-error-list
+ nil
+ (save-excursion
+ (switch-to-buffer compilation-error-buffer)
+ (set-buffer-modified-p nil)
+ (let ((at-start (= compilation-parsing-end 1)))
+ (run-hooks 'compilation-parse-errors-hook)
+ ;; Remember the entire list for compilation-forget-errors.
+ ;; If this is an incremental parse, append to previous list.
+ (if at-start
+ (setq compilation-old-error-list compilation-error-list)
+ (setq compilation-old-error-list
+ (nconc compilation-old-error-list compilation-error-list)))))))
+
+(defun compile-goto-error (&optional argp)
+ "Visit the source for the error message point is on.
+Use this command in a compilation log buffer.
+C-u as a prefix arg means to reparse the buffer's error messages first;
+other kinds of prefix arguments are ignored."
+ (interactive "P")
+ (compile-reinitialize-errors argp)
+ (save-excursion
+ (beginning-of-line)
+ (setq compilation-error-list
+ (memq (assoc (point-marker) compilation-old-error-list)
+ compilation-old-error-list)))
+ ;; Move to another window, so that next-error's window changes
+ ;; result in the desired setup.
+ (or (one-window-p)
+ (other-window -1))
+ (next-error 1))
+
+(defun next-error (&optional argp)
+ "Visit next compilation error message and corresponding source code.
+This operates on the output from the \\[compile] command.
+If all preparsed error messages have been processed,
+the error message buffer is checked for new ones.
+
+A prefix arg specifies how many error messages to move;
+negative means move back to previous error messages.
+Just C-u as a prefix means reparse the error message buffer
+and start at the first error.
+
+\\[next-error] normally applies to the most recent compilation started,
+but as long as you are in the middle of parsing errors from one compilation
+output buffer, you stay with that compilation output buffer.
+
+Use \\[next-error] in a compilation output buffer to switch to
+processing errors from that compilation.
+
+See variables `compilation-parse-errors-hook' and `compilation-error-regexp'
+for customization ideas. When we return, `compilation-last-error'
+points to the error message and the erroneous code."
+ (interactive "P")
+ (compile-reinitialize-errors argp)
+ (if (consp argp)
+ (setq argp nil))
+ (let* ((next-errors (nthcdr (+ (- (length compilation-old-error-list)
+ (length compilation-error-list)
+ 1)
+ (prefix-numeric-value argp))
+ compilation-old-error-list))
+ (next-error (car next-errors)))
+ (if (null next-error)
+ (save-excursion
+ (if argp (if (> (prefix-numeric-value argp) 0)
+ (error "Moved past last error")
+ (error "Moved back past first error")))
+ (set-buffer compilation-error-buffer)
+ (compilation-forget-errors)
+ (error (concat compilation-error-message
+ (if (and (get-buffer-process (current-buffer))
+ (eq (process-status (current-buffer))
+ 'run))
+ " yet" "")))))
+ (setq compilation-error-list (cdr next-errors))
+ ;; If we have an error to go to, go there.
+ (if (null (car (cdr next-error)))
+ nil
+ (switch-to-buffer (marker-buffer (car (cdr next-error))))
+ (goto-char (car (cdr next-error)))
+ ;; If narrowing got in the way of going to the right place, widen.
+ (or (= (point) (car (cdr next-error)))
+ (progn
+ (widen)
+ (goto-char (car (cdr next-error))))))
+ ;; Show compilation buffer in other window, scrolled to this error.
+ (let* ((pop-up-windows t)
+ (w (display-buffer (marker-buffer (car next-error)))))
+ (set-window-point w (car next-error))
+ (set-window-start w (car next-error)))
+ (setq compilation-last-error next-error)))
+
+;; Set compilation-error-list to nil, and
+;; unchain the markers that point to the error messages and their text,
+;; so that they no longer slow down gap motion.
+;; This would happen anyway at the next garbage collection,
+;; but it is better to do it right away.
+(defun compilation-forget-errors ()
+ (while compilation-old-error-list
+ (let ((next-error (car compilation-old-error-list)))
+ (set-marker (car next-error) nil)
+ (if (car (cdr next-error))
+ (set-marker (car (cdr next-error)) nil)))
+ (setq compilation-old-error-list (cdr compilation-old-error-list)))
+ (setq compilation-error-list nil))
+
+(defun compilation-parse-errors ()
+ "Parse the current buffer as grep, cc or lint error messages.
+See variable `compilation-parse-errors-hook' for the interface it uses."
+ (setq compilation-error-list nil)
+ (message "Parsing error messages...")
+ (let (text-buffer
+ last-filename last-linenum)
+ ;; Don't reparse messages already seen at last parse.
+ (goto-char compilation-parsing-end)
+ ;; Don't parse the first two lines as error messages.
+ ;; This matters for grep.
+ (if (bobp)
+ (forward-line 2))
+ (while (re-search-forward compilation-error-regexp nil t)
+ (let (linenum filename
+ error-marker text-marker)
+ ;; Extract file name and line number from error message.
+ (save-restriction
+ (narrow-to-region (match-beginning 0) (match-end 0))
+ (goto-char (point-max))
+ (skip-chars-backward "[0-9]")
+ ;; If it's a lint message, use the last file(linenum) on the line.
+ ;; Normally we use the first on the line.
+ (if (= (preceding-char) ?\()
+ (progn
+ (narrow-to-region (point-min) (1+ (buffer-size)))
+ (end-of-line)
+ (re-search-backward compilation-error-regexp)
+ (skip-chars-backward "^ \t\n")
+ (narrow-to-region (point) (match-end 0))
+ (goto-char (point-max))
+ (skip-chars-backward "[0-9]")))
+ ;; Are we looking at a "filename-first" or "line-number-first" form?
+ (if (looking-at "[0-9]")
+ (progn
+ (setq linenum (read (current-buffer)))
+ (goto-char (point-min)))
+ ;; Line number at start, file name at end.
+ (progn
+ (goto-char (point-min))
+ (setq linenum (read (current-buffer)))
+ (goto-char (point-max))
+ (skip-chars-backward "^ \t\n")))
+ (setq filename (compilation-grab-filename)))
+ ;; Locate the erring file and line.
+ (if (and (equal filename last-filename)
+ (= linenum last-linenum))
+ nil
+ (beginning-of-line 1)
+ (setq error-marker (point-marker))
+ ;; text-buffer gets the buffer containing this error's file.
+ (if (not (equal filename last-filename))
+ (setq last-filename filename
+ text-buffer (compilation-find-file filename)
+ last-linenum 0))
+ (if text-buffer
+ ;; Go to that buffer and find the erring line.
+ (save-excursion
+ (set-buffer text-buffer)
+ (if (zerop last-linenum)
+ (progn
+ (goto-char 1)
+ (setq last-linenum 1)))
+ (forward-line (- linenum last-linenum))
+ (setq last-linenum linenum)
+ (setq text-marker (point-marker))
+ (setq compilation-error-list
+ (cons (list error-marker text-marker)
+ compilation-error-list)))))
+ (forward-line 1)))
+ (setq compilation-parsing-end (point-max)))
+ (message "Parsing error messages...done")
+ (setq compilation-error-list (nreverse compilation-error-list)))
+
+;; Find or create a buffer for file FILENAME.
+;; Search the directories in compilation-search-path
+;; after trying the current directory.
+(defun compilation-find-file (filename)
+ (let ((dirs compilation-search-path)
+ result)
+ (while (and dirs (null result))
+ (let ((name (if (car dirs)
+ (concat (car dirs) filename)
+ filename)))
+ (setq result
+ (and (file-exists-p name)
+ (find-file-noselect name))))
+ (setq dirs (cdr dirs)))
+ result))
+
+(defun compilation-grab-filename ()
+ "Return a string which is a filename, starting at point.
+Ignore quotes and parentheses around it, as well as trailing colons."
+ (if (eq (following-char) ?\")
+ (save-restriction
+ (narrow-to-region (point)
+ (progn (forward-sexp 1) (point)))
+ (goto-char (point-min))
+ (read (current-buffer)))
+ (buffer-substring (point)
+ (progn
+ (skip-chars-forward "^ :,\n\t(")
+ (point)))))
+
+(define-key ctl-x-map "`" 'next-error)
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