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Annotation of 43BSD/contrib/emacs/lisp/compile.el, revision 1.1

1.1     ! root        1: ;; Run compiler as inferior of Emacs, and parse its error messages.
        !             2: ;; Copyright (C) 1985 Richard M. Stallman.
        !             3: 
        !             4: ;; This file is part of GNU Emacs.
        !             5: 
        !             6: ;; GNU Emacs is distributed in the hope that it will be useful,
        !             7: ;; but WITHOUT ANY WARRANTY.  No author or distributor
        !             8: ;; accepts responsibility to anyone for the consequences of using it
        !             9: ;; or for whether it serves any particular purpose or works at all,
        !            10: ;; unless he says so in writing.  Refer to the GNU Emacs General Public
        !            11: ;; License for full details.
        !            12: 
        !            13: ;; Everyone is granted permission to copy, modify and redistribute
        !            14: ;; GNU Emacs, but only under the conditions described in the
        !            15: ;; GNU Emacs General Public License.   A copy of this license is
        !            16: ;; supposed to have been given to you along with GNU Emacs so you
        !            17: ;; can know your rights and responsibilities.  It should be in a
        !            18: ;; file named COPYING.  Among other things, the copyright notice
        !            19: ;; and this notice must be preserved on all copies.
        !            20: 
        !            21: (provide 'compile)
        !            22: 
        !            23: (defvar compilation-process nil
        !            24:   "Process created by compile command, or nil if none exists now.
        !            25: Note that the process may have been \"deleted\" and still
        !            26: be the value of this variable.")
        !            27: 
        !            28: (defvar compilation-error-list nil
        !            29:   "List of error message descriptors for visiting erring functions.
        !            30: Each error descriptor is a list of length two.
        !            31: Its car is a marker pointing to an error message.
        !            32: Its cadr is a marker pointing to the text of the line the message is about,
        !            33:   or nil if that is not interesting.
        !            34: The value may be t instead of a list;
        !            35: this means that the buffer of error messages should be reparsed
        !            36: the next time the list of errors is wanted.")
        !            37: 
        !            38: (defvar compilation-parsing-end nil
        !            39:   "Position of end of buffer when last error messages parsed.")
        !            40: 
        !            41: (defvar compilation-error-message nil
        !            42:   "Message to print when no more matches for compilation-error-regexp are found")
        !            43: 
        !            44: (defvar compilation-error-regexp
        !            45:   "\\([^ \n]+\\(: *\\|, line \\|(\\)[0-9]+\\)\\|\\([0-9]+.*of *[^ \n]+\\)"
        !            46:   "Regular expression for filename/linenumber in error in compilation log.")
        !            47: 
        !            48: (defun compile (command)
        !            49:   "Compile the program including the current buffer.  Default: run make.
        !            50: Runs COMMAND, a shell command, in a separate process asynchronously
        !            51: with output going to the buffer *compilation*.
        !            52: You can then use the command \\[next-error] to find the next error message
        !            53: and move to the source code that caused it."
        !            54:   (interactive (list (read-input "Compile command: " compile-command)))
        !            55:   (setq compile-command command)
        !            56:   (compile1 compile-command "No more errors"))
        !            57: 
        !            58: (defun grep (command)
        !            59:   "Run grep, with user-specified args, and collect output in a buffer.
        !            60: While grep runs asynchronously, you can use the \\[next-error] command
        !            61: to find the text that grep hits refer to."
        !            62:   (interactive "sRun grep (with args): ")
        !            63:   (compile1 (concat "grep -n " command " /dev/null")
        !            64:            "No more grep hits" "grep"))
        !            65: 
        !            66: (defun compile1 (command error-message &optional name-of-mode)
        !            67:   (save-some-buffers)
        !            68:   (if compilation-process
        !            69:       (if (or (not (eq (process-status compilation-process) 'run))
        !            70:              (yes-or-no-p "A compilation process is running; kill it? "))
        !            71:          (condition-case ()
        !            72:                          (delete-process compilation-process)
        !            73:            (error nil))
        !            74:        (error "Cannot have two compilation processes")))
        !            75:   (setq compilation-process nil)
        !            76:   (compilation-forget-errors)
        !            77:   (setq compilation-error-list t)
        !            78:   (setq compilation-error-message error-message)
        !            79:   (setq compilation-process
        !            80:        (start-process "compilation" "*compilation*"
        !            81:                       shell-file-name
        !            82:                       "-c" (concat "exec " command)))
        !            83:   (with-output-to-temp-buffer "*compilation*"
        !            84:     (princ "cd ")
        !            85:     (princ default-directory)
        !            86:     (terpri)
        !            87:     (princ command)
        !            88:     (terpri))
        !            89:   (let ((regexp compilation-error-regexp))
        !            90:     (save-excursion
        !            91:       (switch-to-buffer "*compilation*")
        !            92:       (make-local-variable 'compilation-error-regexp)
        !            93:       (setq compilation-error-regexp regexp)))
        !            94:   (set-process-sentinel compilation-process 'compilation-sentinel)
        !            95:   (let* ((thisdir default-directory)
        !            96:         (outbuf (process-buffer compilation-process))
        !            97:         (outwin (get-buffer-window outbuf)))
        !            98:     (if (eq outbuf (current-buffer))
        !            99:        (goto-char (point-max)))
        !           100:     (save-excursion
        !           101:      (set-buffer outbuf)
        !           102:      (buffer-flush-undo outbuf)
        !           103:      (set-window-start outwin 1)
        !           104:      (or (eq outwin (selected-window))
        !           105:         (set-window-point outwin 1))
        !           106:      (setq default-directory thisdir)
        !           107:      (fundamental-mode)
        !           108:      (setq mode-name (or name-of-mode "Compilation"))
        !           109:      ;; Make log buffer's mode line show process state
        !           110:      (setq mode-line-format
        !           111:           "--%1*%1*-Emacs: %17b   %   %[(%m: %s)%]----%3p--%-"))))
        !           112: 
        !           113: ;; Called when compilation process changes state.
        !           114: (defun compilation-sentinel (proc msg)
        !           115:   (if (memq (process-status proc) '(signal exit))
        !           116:       (let* ((obuf (current-buffer))
        !           117:             (omax (point-max))
        !           118:             (opoint (point)))
        !           119:        (unwind-protect
        !           120:            (progn
        !           121:              (set-buffer (process-buffer proc))
        !           122:              (goto-char (point-max))
        !           123:              (insert ?\n mode-name " " msg)
        !           124:              (setq mode-line-format
        !           125:                    (concat
        !           126:                     "--%1*%1*-Emacs: %17b   %M   %[(%m: "
        !           127:                     (symbol-name (process-status proc))
        !           128:                     ")%]----%3p--%-"))
        !           129:              (delete-process proc)
        !           130:              (setq compilation-process nil)
        !           131:              ;; Force mode line redisplay soon
        !           132:              (set-buffer-modified-p (buffer-modified-p)))
        !           133:         (if (< opoint omax)
        !           134:             (goto-char opoint))
        !           135:         (set-buffer obuf)))))
        !           136: 
        !           137: (defun kill-compilation ()
        !           138:   "Kill the process made by the \\[compile] command."
        !           139:   (interactive)
        !           140:   (if compilation-process
        !           141:       (interrupt-process compilation-process)))
        !           142: 
        !           143: (defun kill-grep ()
        !           144:   "Kill the process made by the \\[grep] command."
        !           145:   (interactive)
        !           146:   (if compilation-process
        !           147:       (interrupt-process compilation-process)))
        !           148: 
        !           149: (defun next-error (&optional argp)
        !           150:   "Visit next compilation error message and corresponding source code.
        !           151: This operates on the output from the \\[compile] command.
        !           152: If all preparsed error messages have been processed,
        !           153: the error message buffer is checked for new ones.
        !           154: A non-nil argument (prefix arg, if interactive)
        !           155: means reparse the error message buffer and start at the first error."
        !           156:   (interactive "P")
        !           157:   (if (or (eq compilation-error-list t)
        !           158:          argp)
        !           159:       (progn (compilation-forget-errors)
        !           160:             (setq compilation-parsing-end 1)))
        !           161:   (if compilation-error-list
        !           162:       nil
        !           163:     (save-excursion
        !           164:       (switch-to-buffer "*compilation*")
        !           165:       (set-buffer-modified-p nil)
        !           166:       (compilation-parse-errors)))
        !           167:   (let ((next-error (car compilation-error-list)))
        !           168:     (if (null next-error)
        !           169:        (error (concat compilation-error-message
        !           170:                       (if (and compilation-process
        !           171:                                (eq (process-status compilation-process)
        !           172:                                    'run))
        !           173:                           " yet" ""))))
        !           174:     (setq compilation-error-list (cdr compilation-error-list))
        !           175:     (if (null (car (cdr next-error)))
        !           176:        nil
        !           177:       (switch-to-buffer (marker-buffer (car (cdr next-error))))
        !           178:       (goto-char (car (cdr next-error)))
        !           179:       (set-marker (car (cdr next-error)) nil))
        !           180:     (let* ((pop-up-windows t)
        !           181:           (w (display-buffer (marker-buffer (car next-error)))))
        !           182:       (set-window-point w (car next-error))
        !           183:       (set-window-start w (car next-error)))
        !           184:     (set-marker (car next-error) nil)))
        !           185: 
        !           186: ;; Set compilation-error-list to nil, and
        !           187: ;; unchain the markers that point to the error messages and their text,
        !           188: ;; so that they no longer slow down gap motion.
        !           189: ;; This would happen anyway at the next garbage collection,
        !           190: ;; but it is better to do it right away.
        !           191: (defun compilation-forget-errors ()
        !           192:   (if (eq compilation-error-list t)
        !           193:       (setq compilation-error-list nil))
        !           194:   (while compilation-error-list
        !           195:     (let ((next-error (car compilation-error-list)))
        !           196:       (set-marker (car next-error) nil)
        !           197:       (if (car (cdr next-error))
        !           198:          (set-marker (car (cdr next-error)) nil)))
        !           199:     (setq compilation-error-list (cdr compilation-error-list))))
        !           200: 
        !           201: (defun compilation-parse-errors ()
        !           202:   "Parse the current buffer as error messages.
        !           203: This makes a list of error descriptors, compilation-error-list.
        !           204: For each source-file, line-number pair in the buffer,
        !           205: the source file is read in, and the text location is saved in compilation-error-list.
        !           206: The function next-error, assigned to \\[next-error], takes the next error off the list
        !           207: and visits its location."
        !           208:   (setq compilation-error-list nil)
        !           209:   (message "Parsing error messages...")
        !           210:   (let (text-buffer
        !           211:        last-filename last-linenum)
        !           212:     ;; Don't reparse messages already seen at last parse.
        !           213:     (goto-char compilation-parsing-end)
        !           214:     ;; Don't parse the first two lines as error messages.
        !           215:     ;; This matters for grep.
        !           216:     (if (bobp)
        !           217:        (forward-line 2))
        !           218:     (while (re-search-forward compilation-error-regexp nil t)
        !           219:       (let (linenum filename
        !           220:            error-marker text-marker)
        !           221:        ;; Extract file name and line number from error message.
        !           222:        (save-restriction
        !           223:          (narrow-to-region (match-beginning 0) (match-end 0))
        !           224:          (goto-char (point-max))
        !           225:          (skip-chars-backward "[0-9]")
        !           226:          ;; If it's a lint message, use the last file(linenum) on the line.
        !           227:          ;; Normally we use the first on the line.
        !           228:          (if (= (preceding-char) ?\()
        !           229:              (progn
        !           230:                (narrow-to-region (point-min) (1+ (buffer-size)))
        !           231:                (end-of-line)
        !           232:                (re-search-backward compilation-error-regexp)
        !           233:                (skip-chars-backward "^ \t\n")
        !           234:                (narrow-to-region (point) (match-end 0))
        !           235:                (goto-char (point-max))
        !           236:                (skip-chars-backward "[0-9]")))
        !           237:          ;; Are we looking at a "filename-first" or "line-number-first" form?
        !           238:          (if (looking-at "[0-9]")
        !           239:              (progn
        !           240:                (setq linenum (read (current-buffer)))
        !           241:                (goto-char (point-min)))
        !           242:            ;; Line number at start, file name at end.
        !           243:            (progn
        !           244:              (goto-char (point-min))
        !           245:              (setq linenum (read (current-buffer)))
        !           246:              (goto-char (point-max))
        !           247:              (skip-chars-backward "^ \t\n")))
        !           248:          (setq filename (compilation-grab-filename)))
        !           249:        ;; Locate the erring file and line.
        !           250:        (if (and (equal filename last-filename)
        !           251:                 (= linenum last-linenum))
        !           252:            nil
        !           253:          (beginning-of-line 1)
        !           254:          (setq error-marker (point-marker))
        !           255:          (setq last-linenum linenum)
        !           256:          (if (not (equal filename last-filename))
        !           257:              (setq text-buffer
        !           258:                    (and (file-exists-p (setq last-filename filename))
        !           259:                         (find-file-noselect filename))))
        !           260:          (if text-buffer
        !           261:              (save-excursion
        !           262:                (set-buffer text-buffer)
        !           263:                (goto-char 1)
        !           264:                (forward-line (1- linenum))
        !           265:                (setq text-marker (point-marker))
        !           266:                (setq compilation-error-list
        !           267:                      (cons (list error-marker text-marker)
        !           268:                            compilation-error-list)))))
        !           269:        (forward-line 1)))
        !           270:     (setq compilation-parsing-end (point-max)))
        !           271:   (message "Parsing error messages...done")
        !           272:   (setq compilation-error-list (nreverse compilation-error-list)))
        !           273: 
        !           274: (defun compilation-grab-filename ()
        !           275:   "Return a string which is a filename, starting at point.
        !           276: Ignore quotes and parentheses around it, as well as trailing colons."
        !           277:   (if (eq (following-char) ?\")
        !           278:       (save-restriction
        !           279:        (narrow-to-region (point)
        !           280:                          (progn (forward-sexp 1) (point)))
        !           281:        (goto-char (point-min))
        !           282:        (read (current-buffer)))
        !           283:     (buffer-substring (point)
        !           284:                      (progn
        !           285:                        (skip-chars-forward "^ :,\n\t(")
        !           286:                        (point)))))
        !           287: 
        !           288: (define-key ctl-x-map "`" 'next-error)

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