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- ;;; cpp.el --- Highlight or hide text according to cpp conditionals.
-
- ;; Copyright (C) 1994, 1995 Free Software Foundation
-
- ;; Author: Per Abrahamsen <abraham@iesd.auc.dk>
- ;; Keywords: c, faces, tools
-
- ;; 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 2, 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, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;; Parse a text for C preprocessor conditionals, and highlight or hide
- ;; the text inside the conditionals as you wish.
-
- ;; This package is inspired by Jim Coplien's delta editor for SCCS.
-
- ;;; Todo:
-
- ;; Should parse "#if" and "#elif" expressions and merge the faces
- ;; somehow.
-
- ;; Somehow it is sometimes possible to make changes near a read only
- ;; area which you can't undo. Their are other strange effects in that
- ;; area.
-
- ;; The Edit buffer should -- optionally -- appear in its own frame.
-
- ;; Conditionals seem to be rear-sticky. They shouldn't be.
-
- ;; Restore window configurations when exiting CPP Edit buffer.
-
- ;;; Code:
-
- ;;; Customization:
-
- (defvar cpp-config-file (convert-standard-filename ".cpp.el")
- "*File name to save cpp configuration.")
-
- (defvar cpp-known-face 'invisible
- "*Face used for known cpp symbols.")
-
- (defvar cpp-unknown-face 'highlight
- "*Face used for unknown cpp symbols.")
-
- (defvar cpp-face-type 'light
- "*Indicate what background face type you prefer.
- Can be either light or dark for color screens, mono for monochrome
- screens, and none if you don't use a window system.")
-
- (defvar cpp-known-writable t
- "*Non-nil means you are allowed to modify the known conditionals.")
-
- (defvar cpp-unknown-writable t
- "*Non-nil means you are allowed to modify the unknown conditionals.")
-
- (defvar cpp-edit-list nil
- "Alist of cpp macros and information about how they should be displayed.
- Each entry is a list with the following elements:
- 0. The name of the macro (a string).
- 1. Face used for text that is `ifdef' the macro.
- 2. Face used for text that is `ifndef' the macro.
- 3. `t', `nil', or `both' depending on what text may be edited.")
-
- (defvar cpp-overlay-list nil)
- ;; List of cpp overlays active in the current buffer.
- (make-variable-buffer-local 'cpp-overlay-list)
-
- (defvar cpp-callback-data)
- (defvar cpp-state-stack)
-
- (defconst cpp-face-type-list
- '(("light color background" . light)
- ("dark color background" . dark)
- ("monochrome" . mono)
- ("tty" . none))
- "Alist of strings and names of the defined face collections.")
-
- (defconst cpp-writable-list
- ;; Names used for the writable property.
- '(("writable" . t)
- ("read-only" . nil)))
-
- (defvar cpp-button-event nil)
- ;; This will be t in the callback for `cpp-make-button'.
-
- (defvar cpp-edit-buffer nil)
- ;; Real buffer whose cpp display information we are editing.
- (make-variable-buffer-local 'cpp-edit-buffer)
-
- (defconst cpp-branch-list
- ;; Alist of branches.
- '(("false" . nil)
- ("true" . t)
- ("both" . both)))
-
- (defvar cpp-face-default-list nil
- "List of faces you can choose from for cpp conditionals.")
-
- (defvar cpp-face-light-name-list
- '("light gray" "light blue" "light cyan" "light yellow" "light pink"
- "pale green" "beige" "orange" "magenta" "violet" "medium purple"
- "turquoise")
- "Background colours useful with dark foreground colors.")
-
- (defvar cpp-face-dark-name-list
- '("dim gray" "blue" "cyan" "yellow" "red"
- "dark green" "brown" "dark orange" "dark khaki" "dark violet" "purple"
- "dark turquoise")
- "Background colours useful with light foreground colors.")
-
- (defvar cpp-face-light-list nil
- "Alist of names and faces to be used for light backgrounds.")
-
- (defvar cpp-face-dark-list nil
- "Alist of names and faces to be used for dark backgrounds.")
-
- (defvar cpp-face-mono-list
- '(("bold" . 'bold)
- ("bold-italic" . 'bold-italic)
- ("italic" . 'italic)
- ("underline" . 'underline))
- "Alist of names and faces to be used for monochrome screens.")
-
- (defvar cpp-face-none-list
- '(("default" . default)
- ("invisible" . invisible))
- "Alist of names and faces available even if you don't use a window system.")
-
- (defvar cpp-face-all-list
- (append cpp-face-light-list
- cpp-face-dark-list
- cpp-face-mono-list
- cpp-face-none-list)
- "All faces used for highlighting text inside cpp conditionals.")
-
- ;;; Parse Buffer:
-
- (defvar cpp-parse-symbols nil
- "List of cpp macros used in the local buffer.")
- (make-variable-buffer-local 'cpp-parse-symbols)
-
- (defconst cpp-parse-regexp
- ;; Regexp matching all tokens needed to find conditionals.
- (concat
- "'\\|\"\\|/\\*\\|//\\|"
- "\\(^[ \t]*#[ \t]*\\(ifdef\\|ifndef\\|if\\|"
- "elif\\|else\\|endif\\)\\b\\)"))
-
- ;;;###autoload
- (defun cpp-highlight-buffer (arg)
- "Highlight C code according to preprocessor conditionals.
- This command pops up a buffer which you should edit to specify
- what kind of highlighting to use, and the criteria for highlighting.
- A prefix arg suppresses display of that buffer."
- (interactive "P")
- (setq cpp-parse-symbols nil)
- (cpp-parse-reset)
- (if (null cpp-edit-list)
- (cpp-edit-load))
- (let (cpp-state-stack)
- (save-excursion
- (goto-char (point-min))
- (cpp-progress-message "Parsing...")
- (while (re-search-forward cpp-parse-regexp nil t)
- (cpp-progress-message "Parsing...%d%%"
- (/ (* 100 (- (point) (point-min))) (buffer-size)))
- (let ((match (buffer-substring (match-beginning 0) (match-end 0))))
- (cond ((or (string-equal match "'")
- (string-equal match "\""))
- (goto-char (match-beginning 0))
- (condition-case nil
- (forward-sexp)
- (error (cpp-parse-error
- "Unterminated string or character"))))
- ((string-equal match "/*")
- (or (search-forward "*/" nil t)
- (error "Unterminated comment")))
- ((string-equal match "//")
- (skip-chars-forward "^\n\r"))
- (t
- (end-of-line 1)
- (let ((from (match-beginning 1))
- (to (1+ (point)))
- (type (buffer-substring (match-beginning 2)
- (match-end 2)))
- (expr (buffer-substring (match-end 1) (point))))
- (cond ((string-equal type "ifdef")
- (cpp-parse-open t expr from to))
- ((string-equal type "ifndef")
- (cpp-parse-open nil expr from to))
- ((string-equal type "if")
- (cpp-parse-open t expr from to))
- ((string-equal type "elif")
- (let (cpp-known-face cpp-unknown-face)
- (cpp-parse-close from to))
- (cpp-parse-open t expr from to))
- ((string-equal type "else")
- (or cpp-state-stack
- (cpp-parse-error "Top level #else"))
- (let ((entry (list (not (nth 0 (car cpp-state-stack)))
- (nth 1 (car cpp-state-stack))
- from to)))
- (cpp-parse-close from to)
- (setq cpp-state-stack (cons entry cpp-state-stack))))
- ((string-equal type "endif")
- (cpp-parse-close from to))
- (t
- (cpp-parse-error "Parser error"))))))))
- (message "Parsing...done"))
- (if cpp-state-stack
- (save-excursion
- (goto-char (nth 3 (car cpp-state-stack)))
- (cpp-parse-error "Unclosed conditional"))))
- (or arg
- (null cpp-parse-symbols)
- (cpp-parse-edit)))
-
- (defun cpp-parse-open (branch expr begin end)
- "Push information about conditional-beginning onto `cpp-state-stack'."
- ;; Discard comments within this line.
- (while (string-match "\\b[ \t]*/\\*.*\\*/[ \t]*\\b" expr)
- (setq expr (concat (substring expr 0 (match-beginning 0))
- (substring expr (match-end 0)))))
- ;; If a comment starts on this line and continues past, discard it.
- (if (string-match "\\b[ \t]*/\\*" expr)
- (setq expr (substring expr 0 (match-beginning 0))))
- ;; Delete any C++ comment from the line.
- (if (string-match "\\b[ \t]*\\(//.*\\)?$" expr)
- (setq expr (substring expr 0 (match-beginning 0))))
- (while (string-match "[ \t]+" expr)
- (setq expr (concat (substring expr 0 (match-beginning 0))
- (substring expr (match-end 0)))))
- (setq cpp-state-stack (cons (list branch expr begin end) cpp-state-stack))
- (or (member expr cpp-parse-symbols)
- (setq cpp-parse-symbols
- (cons expr cpp-parse-symbols)))
- (if (assoc expr cpp-edit-list)
- (cpp-make-known-overlay begin end)
- (cpp-make-unknown-overlay begin end)))
-
- (defun cpp-parse-close (from to)
- ;; Pop top of cpp-state-stack and create overlay.
- (let ((entry (assoc (nth 1 (car cpp-state-stack)) cpp-edit-list))
- (branch (nth 0 (car cpp-state-stack)))
- (begin (nth 2 (car cpp-state-stack)))
- (end (nth 3 (car cpp-state-stack))))
- (setq cpp-state-stack (cdr cpp-state-stack))
- (if entry
- (let ((face (nth (if branch 1 2) entry))
- (read-only (eq (not branch) (nth 3 entry)))
- (priority (length cpp-state-stack))
- (overlay (make-overlay end from)))
- (cpp-make-known-overlay from to)
- (setq cpp-overlay-list (cons overlay cpp-overlay-list))
- (if priority (overlay-put overlay 'priority priority))
- (cond ((eq face 'invisible)
- (cpp-make-overlay-hidden overlay))
- ((eq face 'default))
- (t
- (overlay-put overlay 'face face)))
- (if read-only
- (cpp-make-overlay-read-only overlay)
- (cpp-make-overlay-sticky overlay)))
- (cpp-make-unknown-overlay from to))))
-
- (defun cpp-parse-error (error)
- ;; Error message issued by the cpp parser.
- (error "%s at line %d" error (count-lines (point-min) (point))))
-
- (defun cpp-parse-reset ()
- "Reset display of cpp conditionals to normal."
- (interactive)
- (while cpp-overlay-list
- (delete-overlay (car cpp-overlay-list))
- (setq cpp-overlay-list (cdr cpp-overlay-list))))
-
- ;;;###autoload
- (defun cpp-parse-edit ()
- "Edit display information for cpp conditionals."
- (interactive)
- (or cpp-parse-symbols
- (cpp-highlight-buffer t))
- (let ((buffer (current-buffer)))
- (pop-to-buffer "*CPP Edit*")
- (cpp-edit-mode)
- (setq cpp-edit-buffer buffer)
- (cpp-edit-reset)))
-
- ;;; Overlays:
-
- (defun cpp-make-known-overlay (start end)
- ;; Create an overlay for a known cpp command from START to END.
- (let ((overlay (make-overlay start end)))
- (if (eq cpp-known-face 'invisible)
- (cpp-make-overlay-hidden overlay)
- (or (eq cpp-known-face 'default)
- (overlay-put overlay 'face cpp-known-face))
- (if cpp-known-writable
- ()
- (overlay-put overlay 'modification-hooks '(cpp-signal-read-only))
- (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only))))
- (setq cpp-overlay-list (cons overlay cpp-overlay-list))))
-
- (defun cpp-make-unknown-overlay (start end)
- ;; Create an overlay for an unknown cpp command from START to END.
- (let ((overlay (make-overlay start end)))
- (cond ((eq cpp-unknown-face 'invisible)
- (cpp-make-overlay-hidden overlay))
- ((eq cpp-unknown-face 'default))
- (t
- (overlay-put overlay 'face cpp-unknown-face)))
- (if cpp-unknown-writable
- ()
- (overlay-put overlay 'modification-hooks '(cpp-signal-read-only))
- (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only)))
- (setq cpp-overlay-list (cons overlay cpp-overlay-list))))
-
- (defun cpp-make-overlay-hidden (overlay)
- ;; Make overlay hidden and intangible.
- (overlay-put overlay 'invisible t)
- (overlay-put overlay 'intangible t)
- ;; Unfortunately `intangible' is not implemented for overlays yet,
- ;; so we make is read-only instead.
- (overlay-put overlay 'modification-hooks '(cpp-signal-read-only))
- (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only)))
-
- (defun cpp-make-overlay-read-only (overlay)
- ;; Make overlay read only.
- (overlay-put overlay 'modification-hooks '(cpp-signal-read-only))
- (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only))
- (overlay-put overlay 'insert-behind-hooks '(cpp-signal-read-only)))
-
- (defun cpp-make-overlay-sticky (overlay)
- ;; Make OVERLAY grow when you insert text at either end.
- (overlay-put overlay 'insert-in-front-hooks '(cpp-grow-overlay))
- (overlay-put overlay 'insert-behind-hooks '(cpp-grow-overlay)))
-
- (defun cpp-signal-read-only (overlay after start end &optional len)
- ;; Only allow deleting the whole overlay.
- ;; Trying to change a read-only overlay.
- (if (and (not after)
- (or (< (overlay-start overlay) start)
- (> (overlay-end overlay) end)))
- (error "This text is read only")))
-
- (defun cpp-grow-overlay (overlay after start end &optional len)
- ;; Make OVERLAY grow to contain range START to END.
- (if after
- (move-overlay overlay
- (min start (overlay-start overlay))
- (max end (overlay-end overlay)))))
-
- ;;; Edit Buffer:
-
- (defvar cpp-edit-map nil)
- ;; Keymap for `cpp-edit-mode'.
-
- (if cpp-edit-map
- ()
- (setq cpp-edit-map (make-keymap))
- (suppress-keymap cpp-edit-map)
- (define-key cpp-edit-map [ down-mouse-2 ] 'cpp-push-button)
- (define-key cpp-edit-map [ mouse-2 ] 'ignore)
- (define-key cpp-edit-map " " 'scroll-up)
- (define-key cpp-edit-map "\C-?" 'scroll-down)
- (define-key cpp-edit-map [ delete ] 'scroll-down)
- (define-key cpp-edit-map "\C-c\C-c" 'cpp-edit-apply)
- (define-key cpp-edit-map "a" 'cpp-edit-apply)
- (define-key cpp-edit-map "A" 'cpp-edit-apply)
- (define-key cpp-edit-map "r" 'cpp-edit-reset)
- (define-key cpp-edit-map "R" 'cpp-edit-reset)
- (define-key cpp-edit-map "s" 'cpp-edit-save)
- (define-key cpp-edit-map "S" 'cpp-edit-save)
- (define-key cpp-edit-map "l" 'cpp-edit-load)
- (define-key cpp-edit-map "L" 'cpp-edit-load)
- (define-key cpp-edit-map "h" 'cpp-edit-home)
- (define-key cpp-edit-map "H" 'cpp-edit-home)
- (define-key cpp-edit-map "b" 'cpp-edit-background)
- (define-key cpp-edit-map "B" 'cpp-edit-background)
- (define-key cpp-edit-map "k" 'cpp-edit-known)
- (define-key cpp-edit-map "K" 'cpp-edit-known)
- (define-key cpp-edit-map "u" 'cpp-edit-unknown)
- (define-key cpp-edit-map "u" 'cpp-edit-unknown)
- (define-key cpp-edit-map "t" 'cpp-edit-true)
- (define-key cpp-edit-map "T" 'cpp-edit-true)
- (define-key cpp-edit-map "f" 'cpp-edit-false)
- (define-key cpp-edit-map "F" 'cpp-edit-false)
- (define-key cpp-edit-map "w" 'cpp-edit-write)
- (define-key cpp-edit-map "W" 'cpp-edit-write)
- (define-key cpp-edit-map "X" 'cpp-edit-toggle-known)
- (define-key cpp-edit-map "x" 'cpp-edit-toggle-known)
- (define-key cpp-edit-map "Y" 'cpp-edit-toggle-unknown)
- (define-key cpp-edit-map "y" 'cpp-edit-toggle-unknown)
- (define-key cpp-edit-map "q" 'bury-buffer)
- (define-key cpp-edit-map "Q" 'bury-buffer))
-
- (defvar cpp-edit-symbols nil)
- ;; Symbols defined in the edit buffer.
- (make-variable-buffer-local 'cpp-edit-symbols)
-
- (defun cpp-edit-mode ()
- "Major mode for editing the criteria for highlighting cpp conditionals.
- Click on objects to change them.
- You can also use the keyboard accelerators indicated like this: [K]ey."
- (kill-all-local-variables)
- (buffer-disable-undo)
- (auto-save-mode -1)
- (setq buffer-read-only t)
- (setq major-mode 'cpp-edit-mode)
- (setq mode-name "CPP Edit")
- (use-local-map cpp-edit-map))
-
- (defun cpp-edit-apply ()
- "Apply edited display information to original buffer."
- (interactive)
- (cpp-edit-home)
- (cpp-highlight-buffer t))
-
- (defun cpp-edit-reset ()
- "Reset display information from original buffer."
- (interactive)
- (let ((buffer (current-buffer))
- (buffer-read-only nil)
- (start (window-start))
- (pos (point))
- symbols)
- (set-buffer cpp-edit-buffer)
- (setq symbols cpp-parse-symbols)
- (set-buffer buffer)
- (setq cpp-edit-symbols symbols)
- (erase-buffer)
- (insert "CPP Display Information for `")
- (cpp-make-button (buffer-name cpp-edit-buffer) 'cpp-edit-home)
- (insert "\n\nClick mouse-2 on item you want to change or use\n"
- "or switch to this buffer and type the keyboard equivalents.\n"
- "Keyboard equivalents are indicated with brackets like [T]his.\n\n")
- (cpp-make-button "[H]ome (display the C file)" 'cpp-edit-home)
- (insert " ")
- (cpp-make-button "[A]pply new settings" 'cpp-edit-apply)
- (insert "\n")
- (cpp-make-button "[S]ave settings" 'cpp-edit-save)
- (insert " ")
- (cpp-make-button "[L]oad settings" 'cpp-edit-load)
- (insert "\n\n")
-
- (insert "[B]ackground: ")
- (cpp-make-button (car (rassq cpp-face-type cpp-face-type-list))
- 'cpp-edit-background)
- (insert "\n[K]nown conditionals: ")
- (cpp-make-button (cpp-face-name cpp-known-face)
- 'cpp-edit-known nil t)
- (insert " [X] ")
- (cpp-make-button (car (rassq cpp-known-writable cpp-writable-list))
- 'cpp-edit-toggle-known)
- (insert "\n[U]nknown conditionals: ")
- (cpp-make-button (cpp-face-name cpp-unknown-face)
- 'cpp-edit-unknown nil t)
- (insert " [Y] ")
- (cpp-make-button (car (rassq cpp-unknown-writable cpp-writable-list))
- 'cpp-edit-toggle-unknown)
- (insert (format "\n\n\n%39s: %14s %14s %7s\n\n" "Expression"
- "[T]rue Face" "[F]alse Face" "[W]rite"))
- (while symbols
- (let* ((symbol (car symbols))
- (entry (assoc symbol cpp-edit-list))
- (true (nth 1 entry))
- (false (nth 2 entry))
- (write (if entry (nth 3 entry) 'both)))
- (setq symbols (cdr symbols))
-
- (if (and entry ; Make default entries unknown.
- (or (null true) (eq true 'default))
- (or (null false) (eq false 'default))
- (eq write 'both))
- (setq cpp-edit-list (delq entry cpp-edit-list)
- entry nil))
-
- (if (> (length symbol) 39)
- (insert (substring symbol 0 39) ": ")
- (insert (format "%39s: " symbol)))
-
- (cpp-make-button (cpp-face-name true)
- 'cpp-edit-true symbol t 14)
- (insert " ")
- (cpp-make-button (cpp-face-name false)
- 'cpp-edit-false symbol t 14)
- (insert " ")
- (cpp-make-button (car (rassq write cpp-branch-list))
- 'cpp-edit-write symbol nil 6)
- (insert "\n")))
- (insert "\n\n")
- (set-window-start nil start)
- (goto-char pos)))
-
- (defun cpp-edit-load ()
- "Load cpp configuration."
- (interactive)
- (cond ((file-readable-p cpp-config-file)
- (load-file cpp-config-file))
- ((file-readable-p (concat "~/" cpp-config-file))
- (load-file cpp-config-file)))
- (if (eq major-mode 'cpp-edit-mode)
- (cpp-edit-reset)))
-
- (defun cpp-edit-save ()
- "Load cpp configuration."
- (interactive)
- (require 'pp)
- (save-excursion
- (set-buffer cpp-edit-buffer)
- (let ((buffer (find-file-noselect cpp-config-file)))
- (set-buffer buffer)
- (erase-buffer)
- (pp (list 'setq 'cpp-known-face
- (list 'quote cpp-known-face)) buffer)
- (pp (list 'setq 'cpp-unknown-face
- (list 'quote cpp-unknown-face)) buffer)
- (pp (list 'setq 'cpp-face-type
- (list 'quote cpp-face-type)) buffer)
- (pp (list 'setq 'cpp-known-writable
- (list 'quote cpp-known-writable)) buffer)
- (pp (list 'setq 'cpp-unknown-writable
- (list 'quote cpp-unknown-writable)) buffer)
- (pp (list 'setq 'cpp-edit-list
- (list 'quote cpp-edit-list)) buffer)
- (write-file cpp-config-file))))
-
- (defun cpp-edit-home ()
- "Switch back to original buffer."
- (interactive)
- (if cpp-button-event
- (read-event))
- (pop-to-buffer cpp-edit-buffer))
-
- (defun cpp-edit-background ()
- "Change default face collection."
- (interactive)
- (call-interactively 'cpp-choose-default-face)
- (cpp-edit-reset))
-
- (defun cpp-edit-known ()
- "Select default for known conditionals."
- (interactive)
- (setq cpp-known-face (cpp-choose-face "Known face" cpp-known-face))
- (cpp-edit-reset))
-
- (defun cpp-edit-unknown ()
- "Select default for unknown conditionals."
- (interactive)
- (setq cpp-unknown-face (cpp-choose-face "Unknown face" cpp-unknown-face))
- (cpp-edit-reset))
-
- (defun cpp-edit-toggle-known (arg)
- "Toggle writable status for known conditionals.
- With optional argument ARG, make them writable iff ARG is positive."
- (interactive "@P")
- (if (or (and (null arg) cpp-known-writable)
- (<= (prefix-numeric-value arg) 0))
- (setq cpp-known-writable nil)
- (setq cpp-known-writable t))
- (cpp-edit-reset))
-
- (defun cpp-edit-toggle-unknown (arg)
- "Toggle writable status for unknown conditionals.
- With optional argument ARG, make them writable iff ARG is positive."
- (interactive "@P")
- (if (or (and (null arg) cpp-unknown-writable)
- (<= (prefix-numeric-value arg) 0))
- (setq cpp-unknown-writable nil)
- (setq cpp-unknown-writable t))
- (cpp-edit-reset))
-
- (defun cpp-edit-true (symbol face)
- "Select SYMBOL's true FACE used for highlighting taken conditionals."
- (interactive
- (let ((symbol (cpp-choose-symbol)))
- (list symbol
- (cpp-choose-face "True face"
- (nth 1 (assoc symbol cpp-edit-list))))))
- (setcar (nthcdr 1 (cpp-edit-list-entry-get-or-create symbol)) face)
- (cpp-edit-reset))
-
- (defun cpp-edit-false (symbol face)
- "Select SYMBOL's false FACE used for highlighting untaken conditionals."
- (interactive
- (let ((symbol (cpp-choose-symbol)))
- (list symbol
- (cpp-choose-face "False face"
- (nth 2 (assoc symbol cpp-edit-list))))))
- (setcar (nthcdr 2 (cpp-edit-list-entry-get-or-create symbol)) face)
- (cpp-edit-reset))
-
- (defun cpp-edit-write (symbol branch)
- "Set which branches of SYMBOL should be writable to BRANCH.
- BRANCH should be either nil (false branch), t (true branch) or 'both."
- (interactive (list (cpp-choose-symbol) (cpp-choose-branch)))
- (setcar (nthcdr 3 (cpp-edit-list-entry-get-or-create symbol)) branch)
- (cpp-edit-reset))
-
- (defun cpp-edit-list-entry-get-or-create (symbol)
- ;; Return the entry for SYMBOL in `cpp-edit-list'.
- ;; If it does not exist, create it.
- (let ((entry (assoc symbol cpp-edit-list)))
- (or entry
- (setq entry (list symbol nil nil 'both nil)
- cpp-edit-list (cons entry cpp-edit-list)))
- entry))
-
- ;;; Prompts:
-
- (defun cpp-choose-symbol ()
- ;; Choose a symbol if called from keyboard, otherwise use the one clicked on.
- (if cpp-button-event
- cpp-callback-data
- (completing-read "Symbol: " (mapcar 'list cpp-edit-symbols) nil t)))
-
- (defun cpp-choose-branch ()
- ;; Choose a branch, either nil, t, or both.
- (if cpp-button-event
- (x-popup-menu cpp-button-event
- (list "Branch" (cons "Branch" cpp-branch-list)))
- (cdr (assoc (completing-read "Branch: " cpp-branch-list nil t)
- cpp-branch-list))))
-
- (defun cpp-choose-face (prompt default)
- ;; Choose a face from cpp-face-defalt-list.
- ;; PROMPT is what to say to the user.
- ;; DEFAULT is the default face.
- (or (if cpp-button-event
- (x-popup-menu cpp-button-event
- (list prompt (cons prompt cpp-face-default-list)))
- (let ((name (car (rassq default cpp-face-default-list))))
- (cdr (assoc (completing-read (if name
- (concat prompt
- " (default " name "): ")
- (concat prompt ": "))
- cpp-face-default-list nil t)
- cpp-face-all-list))))
- default))
-
- (defun cpp-choose-default-face (type)
- ;; Choose default face list for screen of TYPE.
- ;; Type must be one of the types defined in `cpp-face-type-list'.
- (interactive (list (if cpp-button-event
- (x-popup-menu cpp-button-event
- (list "Screen type"
- (cons "Screen type"
- cpp-face-type-list)))
- (cdr (assoc (completing-read "Screen type: "
- cpp-face-type-list
- nil t)
- cpp-face-type-list)))))
- (cond ((null type))
- ((eq type 'light)
- (if cpp-face-light-list
- ()
- (setq cpp-face-light-list
- (mapcar 'cpp-create-bg-face cpp-face-light-name-list))
- (setq cpp-face-all-list
- (append cpp-face-all-list cpp-face-light-list)))
- (setq cpp-face-type 'light)
- (setq cpp-face-default-list
- (append cpp-face-light-list cpp-face-none-list)))
- ((eq type 'dark)
- (if cpp-face-dark-list
- ()
- (setq cpp-face-dark-list
- (mapcar 'cpp-create-bg-face cpp-face-dark-name-list))
- (setq cpp-face-all-list
- (append cpp-face-all-list cpp-face-dark-list)))
- (setq cpp-face-type 'dark)
- (setq cpp-face-default-list
- (append cpp-face-dark-list cpp-face-none-list)))
- ((eq type 'mono)
- (setq cpp-face-type 'mono)
- (setq cpp-face-default-list
- (append cpp-face-mono-list cpp-face-none-list)))
- (t
- (setq cpp-face-type 'none)
- (setq cpp-face-default-list cpp-face-none-list))))
-
- ;;; Buttons:
-
- (defun cpp-make-button (name callback &optional data face padding)
- ;; Create a button at point.
- ;; NAME is the name of the button.
- ;; CALLBACK is the function to call when the button is pushed.
- ;; DATA will be made available to CALLBACK
- ;;in the free variable cpp-callback-data.
- ;; FACE means that NAME is the name of a face in `cpp-face-all-list'.
- ;; PADDING means NAME will be right justified at that length.
- (let ((name (format "%s" name))
- from to)
- (cond ((null padding)
- (setq from (point))
- (insert name))
- ((> (length name) padding)
- (setq from (point))
- (insert (substring name 0 padding)))
- (t
- (insert (make-string (- padding (length name)) ? ))
- (setq from (point))
- (insert name)))
- (setq to (point))
- (setq face
- (if face
- (let ((check (cdr (assoc name cpp-face-all-list))))
- (if (memq check '(default invisible))
- 'bold
- check))
- 'bold))
- (add-text-properties from to
- (append (list 'face face)
- '(mouse-face highlight)
- (list 'cpp-callback callback)
- (if data (list 'cpp-data data))))))
-
- (defun cpp-push-button (event)
- ;; Pushed a CPP button.
- (interactive "@e")
- (set-buffer (window-buffer (posn-window (event-start event))))
- (let ((pos (posn-point (event-start event))))
- (let ((cpp-callback-data (get-text-property pos 'cpp-data))
- (fun (get-text-property pos 'cpp-callback))
- (cpp-button-event event))
- (cond (fun
- (call-interactively (get-text-property pos 'cpp-callback)))
- ((lookup-key global-map [ down-mouse-2])
- (call-interactively (lookup-key global-map [ down-mouse-2])))))))
-
- ;;; Faces:
-
- (defun cpp-create-bg-face (color)
- ;; Create entry for face with background COLOR.
- (let ((name (intern (concat "cpp " color))))
- (make-face name)
- (set-face-background name color)
- (cons color name)))
-
- (cpp-choose-default-face (if window-system cpp-face-type 'none))
-
- (defun cpp-face-name (face)
- ;; Return the name of FACE from `cpp-face-all-list'.
- (let ((entry (rassq (if face face 'default) cpp-face-all-list)))
- (if entry
- (car entry)
- (format "<%s>" face))))
-
- ;;; Utilities:
-
- (defvar cpp-progress-time 0)
- ;; Last time we issued a progress message.
-
- (defun cpp-progress-message (&rest args)
- ;; Report progress at most once a second. Take same ARGS as `message'.
- (let ((time (nth 1 (current-time))))
- (if (= time cpp-progress-time)
- ()
- (setq cpp-progress-time time)
- (apply 'message args))))
-
- (provide 'cpp)
-
- ;;; cpp.el ends here
-