-;;; prolog.el --- major mode for editing and running Prolog (and Mercury) code
+;;; prolog.el --- major mode for Prolog (and Mercury) -*- coding: utf-8 -*-
-;; Copyright (C) 1986-1987, 1997-1999, 2002-2003, 2011-2012
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1986-1987, 1997-1999, 2002-2003, 2011-2013 Free
+;; Software Foundation, Inc.
-;; Authors: Emil Åström <emil_astrom(at)hotmail(dot)com>
+;; Authors: Emil Åström <emil_astrom(at)hotmail(dot)com>
;; Milan Zamazal <pdm(at)freesoft(dot)cz>
;; Stefan Bruda <stefan(at)bruda(dot)ca>
;; * See below for more details
;; Original author: Masanobu UMEDA <umerin(at)mse(dot)kyutech(dot)ac(dot)jp>
;; Parts of this file was taken from a modified version of the original
;; by Johan Andersson, Peter Olin, Mats Carlsson, Johan Bevemyr, Stefan
-;; Andersson, and Per Danielsson (all SICS people), and Henrik Båkman
+;; Andersson, and Per Danielsson (all SICS people), and Henrik Båkman
;; at Uppsala University, Sweden.
;;
;; Some ideas and also a few lines of code have been borrowed (not stolen ;-)
;; from Oz.el, the Emacs major mode for the Oz programming language,
;; Copyright (C) 1993 DFKI GmbH, Germany, with permission.
-;; Authors: Ralf Scheidhauer and Michael Mehl ([scheidhr|mehl](at)dfki(dot)uni-sb(dot)de)
+;; Authored by Ralf Scheidhauer and Michael Mehl
+;; ([scheidhr|mehl](at)dfki(dot)uni-sb(dot)de)
;;
;; More ideas and code have been taken from the SICStus debugger mode
;; (http://www.csd.uu.se/~perm/source_debug/index.shtml -- broken link
;;; Installation:
;;
-;; Insert the following lines in your init file--typically ~/.emacs
-;; (GNU Emacs and XEmacs <21.4), or ~/.xemacs/init.el (XEmacs
-;; 21.4)--to use this mode when editing Prolog files under Emacs:
+;; Insert the following lines in your init file:
;;
;; (setq load-path (cons "/usr/lib/xemacs/site-lisp" load-path))
;; (autoload 'run-prolog "prolog" "Start a Prolog sub-process." t)
(defgroup prolog nil
- "Major modes for editing and running Prolog and Mercury files."
+ "Editing and running Prolog and Mercury files."
:group 'languages)
(defgroup prolog-faces nil
)
table))
(defvar prolog-mode-abbrev-table nil)
-(defvar prolog-upper-case-string ""
- "A string containing all upper case characters.
-Set by prolog-build-case-strings.")
-(defvar prolog-lower-case-string ""
- "A string containing all lower case characters.
-Set by prolog-build-case-strings.")
-
-(defvar prolog-atom-char-regexp ""
- "Set by prolog-set-atom-regexps.")
-;; "Regexp specifying characters which constitute atoms without quoting.")
-(defvar prolog-atom-regexp ""
- "Set by prolog-set-atom-regexps.")
+
+(if (eval-when-compile
+ (and (string-match "[[:upper:]]" "A")
+ (with-temp-buffer
+ (insert "A") (skip-chars-backward "[:upper:]") (bolp))))
+ (progn
+ (defconst prolog-upper-case-string "[:upper:]"
+ "A string containing a char-range matching all upper case characters.")
+ (defconst prolog-lower-case-string "[:lower:]"
+ "A string containing a char-range matching all lower case characters."))
+
+ ;; GNU Emacs compatibility: GNU Emacs does not differentiate between
+ ;; ints and chars, or at least these two are interchangeable.
+ (defalias 'prolog-int-to-char
+ (if (fboundp 'int-to-char) #'int-to-char #'identity))
+
+ (defalias 'prolog-char-to-int
+ (if (fboundp 'char-to-int) #'char-to-int #'identity))
+
+ (defun prolog-ints-intervals (ints)
+ "Return a list of intervals (from . to) covering INTS."
+ (when ints
+ (setq ints (sort ints '<))
+ (let ((prev (car ints))
+ (interval-start (car ints))
+ intervals)
+ (while ints
+ (let ((next (car ints)))
+ (when (> next (1+ prev)) ; start of new interval
+ (setq intervals (cons (cons interval-start prev) intervals))
+ (setq interval-start next))
+ (setq prev next)
+ (setq ints (cdr ints))))
+ (setq intervals (cons (cons interval-start prev) intervals))
+ (reverse intervals))))
+
+ (defun prolog-dash-letters (string)
+ "Return a condensed regexp covering all letters in STRING."
+ (let ((intervals (prolog-ints-intervals (mapcar #'prolog-char-to-int
+ (string-to-list string))))
+ codes)
+ (while intervals
+ (let* ((i (car intervals))
+ (from (car i))
+ (to (cdr i))
+ (c (cond ((= from to) `(,from))
+ ((= (1+ from) to) `(,from ,to))
+ (t `(,from ?- ,to)))))
+ (setq codes (cons c codes)))
+ (setq intervals (cdr intervals)))
+ (apply 'concat (reverse codes))))
+
+ (let ((up_string "")
+ (low_string ""))
+ ;; Use `map-char-table' if it is defined. Otherwise enumerate all
+ ;; numbers between 0 and 255. `map-char-table' is probably safer.
+ ;;
+ ;; `map-char-table' causes problems under Emacs 23.0.0.1, the
+ ;; while loop seems to do its job well (Ryszard Szopa)
+ ;;
+ ;;(if (and (not (featurep 'xemacs))
+ ;; (fboundp 'map-char-table))
+ ;; (map-char-table
+ ;; (lambda (key value)
+ ;; (cond
+ ;; ((and
+ ;; (eq (prolog-int-to-char key) (downcase key))
+ ;; (eq (prolog-int-to-char key) (upcase key)))
+ ;; ;; Do nothing if upper and lower case are the same
+ ;; )
+ ;; ((eq (prolog-int-to-char key) (downcase key))
+ ;; ;; The char is lower case
+ ;; (setq low_string (format "%s%c" low_string key)))
+ ;; ((eq (prolog-int-to-char key) (upcase key))
+ ;; ;; The char is upper case
+ ;; (setq up_string (format "%s%c" up_string key)))
+ ;; ))
+ ;; (current-case-table))
+ ;; `map-char-table' was undefined.
+ (let ((key 0))
+ (while (< key 256)
+ (cond
+ ((and
+ (eq (prolog-int-to-char key) (downcase key))
+ (eq (prolog-int-to-char key) (upcase key)))
+ ;; Do nothing if upper and lower case are the same
+ )
+ ((eq (prolog-int-to-char key) (downcase key))
+ ;; The char is lower case
+ (setq low_string (format "%s%c" low_string key)))
+ ((eq (prolog-int-to-char key) (upcase key))
+ ;; The char is upper case
+ (setq up_string (format "%s%c" up_string key)))
+ )
+ (setq key (1+ key))))
+ ;; )
+ ;; The strings are single-byte strings.
+ (defconst prolog-upper-case-string (prolog-dash-letters up_string)
+ "A string containing a char-range matching all upper case characters.")
+ (defconst prolog-lower-case-string (prolog-dash-letters low_string)
+ "A string containing a char-range matching all lower case characters.")
+ ))
+
+(defconst prolog-atom-char-regexp
+ (if (string-match "[[:alnum:]]" "0")
+ "[[:alnum:]_$]"
+ (format "[%s%s0-9_$]" prolog-lower-case-string prolog-upper-case-string))
+ "Regexp specifying characters which constitute atoms without quoting.")
+(defconst prolog-atom-regexp
+ (format "[%s$]%s*" prolog-lower-case-string prolog-atom-char-regexp))
(defconst prolog-left-paren "[[({]" ;FIXME: Why not \\s(?
"The characters used as left parentheses for the indentation code.")
'(("dcg" . "-->") ("rule" . ":-") ("simplification" . "<=>")
("propagation" . "==>")))))
+;; SMIE support
+
+(require 'smie)
+
+(defvar prolog-use-smie t)
+
+(defun prolog-smie-forward-token ()
+ ;; FIXME: Add support for 0'<char>, if needed after adding it to
+ ;; syntax-propertize-functions.
+ (forward-comment (point-max))
+ (buffer-substring-no-properties
+ (point)
+ (progn (cond
+ ((looking-at "[!;]") (forward-char 1))
+ ((not (zerop (skip-chars-forward "#&*+-./:<=>?@\\^`~"))))
+ ((not (zerop (skip-syntax-forward "w_'"))))
+ ;; In case of non-ASCII punctuation.
+ ((not (zerop (skip-syntax-forward ".")))))
+ (point))))
+
+(defun prolog-smie-backward-token ()
+ ;; FIXME: Add support for 0'<char>, if needed after adding it to
+ ;; syntax-propertize-functions.
+ (forward-comment (- (point-max)))
+ (buffer-substring-no-properties
+ (point)
+ (progn (cond
+ ((memq (char-before) '(?! ?\;)) (forward-char -1))
+ ((not (zerop (skip-chars-backward "#&*+-./:<=>?@\\^`~"))))
+ ((not (zerop (skip-syntax-backward "w_'"))))
+ ;; In case of non-ASCII punctuation.
+ ((not (zerop (skip-syntax-backward ".")))))
+ (point))))
+
+(defconst prolog-smie-grammar
+ ;; Rather than construct the operator levels table from the BNF,
+ ;; we directly provide the operator precedences from GNU Prolog's
+ ;; manual (7.14.10 op/3). The only problem is that GNU Prolog's
+ ;; manual uses precedence levels in the opposite sense (higher
+ ;; numbers bind less tightly) than SMIE, so we use negative numbers.
+ '(("." -10000 -10000)
+ (":-" -1200 -1200)
+ ("-->" -1200 -1200)
+ (";" -1100 -1100)
+ ("->" -1050 -1050)
+ ("," -1000 -1000)
+ ("\\+" -900 -900)
+ ("=" -700 -700)
+ ("\\=" -700 -700)
+ ("=.." -700 -700)
+ ("==" -700 -700)
+ ("\\==" -700 -700)
+ ("@<" -700 -700)
+ ("@=<" -700 -700)
+ ("@>" -700 -700)
+ ("@>=" -700 -700)
+ ("is" -700 -700)
+ ("=:=" -700 -700)
+ ("=\\=" -700 -700)
+ ("<" -700 -700)
+ ("=<" -700 -700)
+ (">" -700 -700)
+ (">=" -700 -700)
+ (":" -600 -600)
+ ("+" -500 -500)
+ ("-" -500 -500)
+ ("/\\" -500 -500)
+ ("\\/" -500 -500)
+ ("*" -400 -400)
+ ("/" -400 -400)
+ ("//" -400 -400)
+ ("rem" -400 -400)
+ ("mod" -400 -400)
+ ("<<" -400 -400)
+ (">>" -400 -400)
+ ("**" -200 -200)
+ ("^" -200 -200)
+ ;; Prefix
+ ;; ("+" 200 200)
+ ;; ("-" 200 200)
+ ;; ("\\" 200 200)
+ (:smie-closer-alist (t . "."))
+ )
+ "Precedence levels of infix operators.")
+
+(defun prolog-smie-rules (kind token)
+ (pcase (cons kind token)
+ (`(:elem . basic) prolog-indent-width)
+ (`(:after . ".") '(column . 0)) ;; To work around smie-closer-alist.
+ (`(:after . ,(or `":-" `"->" `"-->")) prolog-indent-width)))
\f
;;-------------------------------------------------------------------
(set (make-local-variable 'paragraph-separate) paragraph-start)
(set (make-local-variable 'paragraph-ignore-fill-prefix) t)
(set (make-local-variable 'normal-auto-fill-function) 'prolog-do-auto-fill)
- (set (make-local-variable 'indent-line-function) 'prolog-indent-line)
(set (make-local-variable 'comment-start) "%")
(set (make-local-variable 'comment-end) "")
(set (make-local-variable 'comment-add) 1)
;; inside quoted atoms or strings
(format "^\\(\\(%s\\|%s\\|[^\n\'\"%%]\\)*\\)\\(/\\*+ *\\|%%+ *\\)"
prolog-quoted-atom-regexp prolog-string-regexp))
- (set (make-local-variable 'comment-indent-function) 'prolog-comment-indent)
(set (make-local-variable 'parens-require-spaces) nil)
;; Initialize Prolog system specific variables
(dolist (var '(prolog-keywords prolog-types prolog-mode-specificators
'(prolog-font-lock-keywords nil nil ((?_ . "w"))))
(set (make-local-variable 'syntax-propertize-function)
prolog-syntax-propertize-function)
+
+ (if prolog-use-smie
+ ;; Setup SMIE.
+ (smie-setup prolog-smie-grammar #'prolog-smie-rules
+ :forward-token #'prolog-smie-forward-token
+ :backward-token #'prolog-smie-backward-token)
+ (set (make-local-variable 'indent-line-function) 'prolog-indent-line))
)
(defun prolog-mode-keybindings-common (map)
((eq prolog-system 'gnu) "[GNU]")
(t ""))))
(prolog-mode-variables)
- (prolog-build-case-strings)
- (prolog-set-atom-regexps)
(dolist (ar prolog-align-rules) (add-to-list 'align-rules-list ar))
- ;; imenu entry moved to the appropriate hook for consistency
+ ;; `imenu' entry moved to the appropriate hook for consistency.
;; Load SICStus debugger if suitable
(if (and (eq prolog-system 'sicstus)
real-file))
(with-current-buffer buffer
(goto-char (point-max))
- (set-process-filter process 'prolog-consult-compile-filter)
+ (add-function :override (process-filter process)
+ #'prolog-consult-compile-filter)
(process-send-string "prolog" command-string)
;; (prolog-build-prolog-command compilep file real-file first-line))
(while (and prolog-process-flag
(insert (if compilep
"\nCompilation finished.\n"
"\nConsulted.\n"))
- (set-process-filter process old-filter))))
+ (remove-function (process-filter process)
+ #'prolog-consult-compile-filter))))
(defvar compilation-error-list)
limit t)
(setq filepath (match-string 2)))
- ;; ###### Does this work with SICStus under Windows (i.e. backslashes and stuff?)
+ ;; ###### Does this work with SICStus under Windows
+ ;; (i.e. backslashes and stuff?)
(if (string-match "\\(.*/\\)\\([^/]*\\)$" filepath)
(progn
(setq dir (match-string 1 filepath))
(defface prolog-builtin-face
'((((class color) (background light)) (:foreground "Purple"))
(((class color) (background dark)) (:foreground "Cyan"))
- (((class grayscale) (background light)) (:foreground "LightGray" :bold t))
+ (((class grayscale) (background light))
+ :foreground "LightGray" :bold t)
(((class grayscale) (background dark)) (:foreground "DimGray" :bold t))
(t (:bold t)))
"Face name to use for compiler warnings."
(if (eq prolog-system 'mercury)
(list
(prolog-make-keywords-regexp prolog-mode-specificators-i t)
- 0 'font-lock-reference-face)))
+ 0 'font-lock-constant-face)))
(directives
(if (eq prolog-system 'mercury)
(list
(prolog-insert-spaces-after-paren))
))
-(defun prolog-comment-indent ()
- "Compute prolog comment indentation."
- ;; FIXME: Only difference with default behavior is that %%% is not
- ;; flushed to column 0 but just left where the user put it.
- (cond ((looking-at "%%%") (prolog-indentation-level-of-line))
- ((looking-at "%%") (prolog-indent-level))
- (t
- (save-excursion
- (skip-chars-backward " \t")
- ;; Insert one space at least, except at left margin.
- (max (+ (current-column) (if (bolp) 0 1))
- comment-column)))
- ))
-
(defun prolog-indent-level ()
"Compute prolog indentation level."
(save-excursion
(save-excursion
(let ((state (prolog-clause-info))
(object (prolog-in-object)))
- (if (or (equal (nth 0 state) "") (equal (prolog-in-string-or-comment) 'cmt))
+ (if (or (equal (nth 0 state) "")
+ (equal (prolog-in-string-or-comment) 'cmt))
nil
(if (and (eq prolog-system 'sicstus)
object)
(defun prolog-pred-start ()
"Return the starting point of the first clause of the current predicate."
+ ;; FIXME: Use SMIE.
(save-excursion
(goto-char (prolog-clause-start))
;; Find first clause, unless it was a directive
(defun prolog-pred-end ()
"Return the position at the end of the last clause of the current predicate."
+ ;; FIXME: Use SMIE.
(save-excursion
- (goto-char (prolog-clause-end)) ; if we are before the first predicate
+ (goto-char (prolog-clause-end)) ; If we are before the first predicate.
(goto-char (prolog-clause-start))
(let* ((pinfo (prolog-clause-info))
(predname (nth 0 pinfo))
(defun prolog-beginning-of-predicate ()
"Go to the nearest beginning of predicate before current point.
Return the final point or nil if no such a beginning was found."
+ ;; FIXME: Hook into beginning-of-defun.
(interactive)
(let ((op (point))
(pos (prolog-pred-start)))
(defun prolog-end-of-predicate ()
"Go to the end of the current predicate."
+ ;; FIXME: Hook into end-of-defun.
(interactive)
(let ((op (point)))
(goto-char (prolog-pred-end))
(indent-for-comment)))
(defun prolog-indent-predicate ()
- "*Indent the current predicate."
+ "Indent the current predicate."
(interactive)
(indent-region (prolog-pred-start) (prolog-pred-end) nil))
(defun prolog-indent-buffer ()
- "*Indent the entire buffer."
+ "Indent the entire buffer."
(interactive)
(indent-region (point-min) (point-max) nil))
"Delete preceding character or whitespace.
If `prolog-hungry-delete-key-flag' is non-nil, then all preceding whitespace is
consumed. If however an ARG is supplied, or `prolog-hungry-delete-key-flag' is
-nil, or point is inside a literal then the function in the variable
+nil, or point is inside a literal then the function
`backward-delete-char' is called."
(interactive "P")
(if (or (not prolog-hungry-delete-key-flag)
(defun prolog-electric-if-then-else (arg)
"If `prolog-electric-if-then-else-flag' is non-nil, indent if-then-else constructs.
Bound to the >, ; and ( keys."
+ ;; FIXME: Use post-self-insert-hook or electric-indent-mode.
(interactive "P")
(self-insert-command (prefix-numeric-value arg))
(if prolog-electric-if-then-else-flag (prolog-insert-spaces-after-paren)))
That is, insert space (if appropriate), `:-' and newline if colon is pressed
at the end of a line that starts in the first column (i.e., clause
heads)."
+ ;; FIXME: Use post-self-insert-hook.
(interactive "P")
(if (and prolog-electric-colon-flag
(null arg)
(unless (save-excursion (backward-char 1) (looking-at "\\s "))
(insert " "))
(insert ":-\n")
- (prolog-indent-line))
+ (indent-according-to-mode))
(self-insert-command (prefix-numeric-value arg))))
(defun prolog-electric-dash (arg)
that is, insert space (if appropriate), `-->' and newline if dash is pressed
at the end of a line that starts in the first column (i.e., DCG
heads)."
+ ;; FIXME: Use post-self-insert-hook.
(interactive "P")
(if (and prolog-electric-dash-flag
(null arg)
(unless (save-excursion (backward-char 1) (looking-at "\\s "))
(insert " "))
(insert "-->\n")
- (prolog-indent-line))
+ (indent-according-to-mode))
(self-insert-command (prefix-numeric-value arg))))
(defun prolog-electric-dot (arg)
of the current predicate.
When called with prefix argument ARG, insert just dot."
+ ;; FIXME: Use post-self-insert-hook.
(interactive "P")
;; Check for situations when the electricity should not be active
(if (or (not prolog-electric-dot-flag)
on a variable then replace the variable with underscore and skip
the following comma and whitespace, if any.
If the point is not on a variable then insert underscore."
+ ;; FIXME: Use post-self-insert-hook.
(interactive)
(if prolog-electric-underscore-flag
(let (;start
(backward-char)))
)))
+;;(defun prolog-regexp-dash-continuous-chars (chars)
+;; (let ((ints (mapcar #'prolog-char-to-int (string-to-list chars)))
+;; (beg 0)
+;; (end 0))
+;; (if (null ints)
+;; chars
+;; (while (and (< (+ beg 1) (length chars))
+;; (not (or (= (+ (nth beg ints) 1) (nth (+ beg 1) ints))
+;; (= (nth beg ints) (nth (+ beg 1) ints)))))
+;; (setq beg (+ beg 1)))
+;; (setq beg (+ beg 1)
+;; end beg)
+;; (while (and (< (+ end 1) (length chars))
+;; (or (= (+ (nth end ints) 1) (nth (+ end 1) ints))
+;; (= (nth end ints) (nth (+ end 1) ints))))
+;; (setq end (+ end 1)))
+;; (if (equal (substring chars end) "")
+;; (substring chars 0 beg)
+;; (concat (substring chars 0 beg) "-"
+;; (prolog-regexp-dash-continuous-chars (substring chars end))))
+;; )))
+
+;;(defun prolog-condense-character-sets (regexp)
+;; "Condense adjacent characters in character sets of REGEXP."
+;; (let ((next -1))
+;; (while (setq next (string-match "\\[\\(.*?\\)\\]" regexp (1+ next)))
+;; (setq regexp (replace-match (prolog-dash-letters (match-string 1 regexp))
+;; t t regexp 1))))
+;; regexp)
-(defun prolog-set-atom-regexps ()
- "Set the `prolog-atom-char-regexp' and `prolog-atom-regexp' variables.
-Must be called after `prolog-build-case-strings'."
- (setq prolog-atom-char-regexp
- (format "[%s%s0-9_$]"
- ;; FIXME: why not a-zA-Z?
- prolog-lower-case-string
- prolog-upper-case-string))
- (setq prolog-atom-regexp
- (format "[%s$]%s*"
- prolog-lower-case-string
- prolog-atom-char-regexp))
- )
-
-(defun prolog-build-case-strings ()
- "Set `prolog-upper-case-string' and `prolog-lower-case-string'.
-Uses the current case-table for extracting the relevant information."
- (let ((up_string "")
- (low_string ""))
- ;; Use `map-char-table' if it is defined. Otherwise enumerate all
- ;; numbers between 0 and 255. `map-char-table' is probably safer.
- ;;
- ;; `map-char-table' causes problems under Emacs 23.0.0.1, the
- ;; while loop seems to do its job well (Ryszard Szopa)
- ;;
- ;;(if (and (not (featurep 'xemacs))
- ;; (fboundp 'map-char-table))
- ;; (map-char-table
- ;; (lambda (key value)
- ;; (cond
- ;; ((and
- ;; (eq (prolog-int-to-char key) (downcase key))
- ;; (eq (prolog-int-to-char key) (upcase key)))
- ;; ;; Do nothing if upper and lower case are the same
- ;; )
- ;; ((eq (prolog-int-to-char key) (downcase key))
- ;; ;; The char is lower case
- ;; (setq low_string (format "%s%c" low_string key)))
- ;; ((eq (prolog-int-to-char key) (upcase key))
- ;; ;; The char is upper case
- ;; (setq up_string (format "%s%c" up_string key)))
- ;; ))
- ;; (current-case-table))
- ;; `map-char-table' was undefined.
- (let ((key 0))
- (while (< key 256)
- (cond
- ((and
- (eq (prolog-int-to-char key) (downcase key))
- (eq (prolog-int-to-char key) (upcase key)))
- ;; Do nothing if upper and lower case are the same
- )
- ((eq (prolog-int-to-char key) (downcase key))
- ;; The char is lower case
- (setq low_string (format "%s%c" low_string key)))
- ((eq (prolog-int-to-char key) (upcase key))
- ;; The char is upper case
- (setq up_string (format "%s%c" up_string key)))
- )
- (setq key (1+ key))))
- ;; )
- ;; The strings are single-byte strings
- (setq prolog-upper-case-string (prolog-dash-letters up_string))
- (setq prolog-lower-case-string (prolog-dash-letters low_string))
- ))
-
-;(defun prolog-regexp-dash-continuous-chars (chars)
-; (let ((ints (mapcar #'prolog-char-to-int (string-to-list chars)))
-; (beg 0)
-; (end 0))
-; (if (null ints)
-; chars
-; (while (and (< (+ beg 1) (length chars))
-; (not (or (= (+ (nth beg ints) 1) (nth (+ beg 1) ints))
-; (= (nth beg ints) (nth (+ beg 1) ints)))))
-; (setq beg (+ beg 1)))
-; (setq beg (+ beg 1)
-; end beg)
-; (while (and (< (+ end 1) (length chars))
-; (or (= (+ (nth end ints) 1) (nth (+ end 1) ints))
-; (= (nth end ints) (nth (+ end 1) ints))))
-; (setq end (+ end 1)))
-; (if (equal (substring chars end) "")
-; (substring chars 0 beg)
-; (concat (substring chars 0 beg) "-"
-; (prolog-regexp-dash-continuous-chars (substring chars end))))
-; )))
-
-(defun prolog-ints-intervals (ints)
- "Return a list of intervals (from . to) covering INTS."
- (when ints
- (setq ints (sort ints '<))
- (let ((prev (car ints))
- (interval-start (car ints))
- intervals)
- (while ints
- (let ((next (car ints)))
- (when (> next (1+ prev)) ; start of new interval
- (setq intervals (cons (cons interval-start prev) intervals))
- (setq interval-start next))
- (setq prev next)
- (setq ints (cdr ints))))
- (setq intervals (cons (cons interval-start prev) intervals))
- (reverse intervals))))
-
-(defun prolog-dash-letters (string)
- "Return a condensed regexp covering all letters in STRING."
- (let ((intervals (prolog-ints-intervals (mapcar #'prolog-char-to-int
- (string-to-list string))))
- codes)
- (while intervals
- (let* ((i (car intervals))
- (from (car i))
- (to (cdr i))
- (c (cond ((= from to) `(,from))
- ((= (1+ from) to) `(,from ,to))
- (t `(,from ?- ,to)))))
- (setq codes (cons c codes)))
- (setq intervals (cdr intervals)))
- (apply 'concat (reverse codes))))
-
-;(defun prolog-condense-character-sets (regexp)
-; "Condense adjacent characters in character sets of REGEXP."
-; (let ((next -1))
-; (while (setq next (string-match "\\[\\(.*?\\)\\]" regexp (1+ next)))
-; (setq regexp (replace-match (prolog-dash-letters (match-string 1 regexp))
-; t t regexp 1))))
-; regexp)
-
-;; GNU Emacs compatibility: GNU Emacs does not differentiate between
-;; ints and chars, or at least these two are interchangeable.
-(defalias 'prolog-int-to-char
- (if (fboundp 'int-to-char) #'int-to-char #'identity))
-
-(defalias 'prolog-char-to-int
- (if (fboundp 'char-to-int) #'char-to-int #'identity))
-\f
;;-------------------------------------------------------------------
;; Menu stuff (both for the editing buffer and for the inferior
;; prolog buffer)
["Beginning of predicate" prolog-beginning-of-predicate t]
["End of predicate" prolog-end-of-predicate t]
"---"
- ["Indent line" prolog-indent-line t]
+ ["Indent line" indent-according-to-mode t]
["Indent region" indent-region (region-exists-p)]
["Indent predicate" prolog-indent-predicate t]
["Indent buffer" prolog-indent-buffer t]
HCoop / bpt / emacs.git / blobdiff