;;; essl-s.el --- Support for editing S source code ;; Copyright (C) 1989-1997 Bates, Kademan, Ritter, Smith, Hornik, ;; Heiberger, Maechler, and Rossini. ;; Author: A.J. Rossini ;; Maintainer: A.J. Rossini ;; Created: 26 Aug 1997 ;; Modified: $Date: 1998/11/11 12:44:49 $ ;; Version: $Revision: 5.11 $ ;; RCS: $Id: essl-s.el,v 5.11 1998/11/11 12:44:49 maechler Exp $ ;; This file is part of ESS (Emacs Speaks Statistics). ;; This file 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. ;; This file 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. ;;; Commentary: ;; Code for general editing S source code (specializes to S, S+, R). ;;; Code: ; Requires and autoloads ; Configuration variables (defun S-comment-indent () "Indentation for S comments." (if (looking-at "###") (current-column) (if (looking-at "##") (let ((tem (S-calculate-indent))) (if (listp tem) (car tem) tem)) (skip-chars-backward " \t") (max (if (bolp) 0 (1+ (current-column))) comment-column)))) (defun S-indent-line () "Indent current line as S code. Return the amount the indentation changed by." (let ((indent (S-calculate-indent nil)) beg shift-amt (case-fold-search nil) (pos (- (point-max) (point)))) (beginning-of-line) (setq beg (point)) (cond ((eq indent nil) (setq indent (current-indentation))) (t (skip-chars-forward " \t") (if (and ess-fancy-comments (looking-at "###")) (setq indent 0)) (if (and ess-fancy-comments (looking-at "#") (not (looking-at "##"))) (setq indent comment-column) (if (eq indent t) (setq indent 0)) (if (listp indent) (setq indent (car indent))) (cond ((and (looking-at "else\\b") (not (looking-at "else\\s_"))) (setq indent (save-excursion (ess-backward-to-start-of-if) (+ ess-else-offset (current-indentation))))) ((= (following-char) ?}) (setq indent (+ indent (- ess-close-brace-offset ess-indent-level)))) ((= (following-char) ?{) (setq indent (+ indent ess-brace-offset))))))) (skip-chars-forward " \t") (setq shift-amt (- indent (current-column))) (if (zerop shift-amt) (if (> (- (point-max) pos) (point)) (goto-char (- (point-max) pos))) (delete-region beg (point)) (indent-to indent) ;; If initial point was within line's indentation, ;; position after the indentation. ;; Else stay at same point in text. (if (> (- (point-max) pos) (point)) (goto-char (- (point-max) pos)))) shift-amt)) (defun S-calculate-indent (&optional parse-start) "Return appropriate indentation for current line as S code. In usual case returns an integer: the column to indent to. Returns nil if line starts inside a string, t if in a comment." (save-excursion (beginning-of-line) (let ((indent-point (point)) (case-fold-search nil) state containing-sexp) (if parse-start (goto-char parse-start) (beginning-of-defun)) (while (< (point) indent-point) (setq parse-start (point)) (setq state (parse-partial-sexp (point) indent-point 0)) (setq containing-sexp (car (cdr state)))) (cond ((or (nth 3 state) (nth 4 state)) ;; return nil or t if should not change this line (nth 4 state)) ((null containing-sexp) ;; Line is at top level. May be data or function definition, (beginning-of-line) (if (and (/= (following-char) ?\{) (save-excursion (ess-backward-to-noncomment (point-min)) (ess-continued-statement-p))) ess-continued-statement-offset 0)) ; Unless it starts a function body ((/= (char-after containing-sexp) ?{) ;; line is expression, not statement: ;; indent to just after the surrounding open. (goto-char containing-sexp) (let ((bol (save-excursion (beginning-of-line) (point)))) ;; modified by shiba@isac 7.3.1992 (cond ((and (numberp ess-expression-offset) (re-search-backward "[ \t]*expression[ \t]*" bol t)) ;; This regexp match every "expression". ;; modified by shiba ;;(forward-sexp -1) (beginning-of-line) (skip-chars-forward " \t") ;; End (+ (current-column) ess-expression-offset)) ((and (numberp ess-arg-function-offset) (re-search-backward "=[ \t]*\\s\"*\\(\\w\\|\\s_\\)+\\s\"*[ \t]*" bol t)) (forward-sexp -1) (+ (current-column) ess-arg-function-offset)) ;; "expression" is searched before "=". ;; End (t (progn (goto-char (1+ containing-sexp)) (current-column)))))) (t ;; Statement level. Is it a continuation or a new statement? ;; Find previous non-comment character. (goto-char indent-point) (ess-backward-to-noncomment containing-sexp) ;; Back up over label lines, since they don't ;; affect whether our line is a continuation. (while (eq (preceding-char) ?\,) (ess-backward-to-start-of-continued-exp containing-sexp) (beginning-of-line) (ess-backward-to-noncomment containing-sexp)) ;; Now we get the answer. (if (ess-continued-statement-p) ;; This line is continuation of preceding line's statement; ;; indent ess-continued-statement-offset more than the ;; previous line of the statement. (progn (ess-backward-to-start-of-continued-exp containing-sexp) (+ ess-continued-statement-offset (current-column) (if (save-excursion (goto-char indent-point) (skip-chars-forward " \t") (eq (following-char) ?{)) ess-continued-brace-offset 0))) ;; This line starts a new statement. ;; Position following last unclosed open. (goto-char containing-sexp) ;; Is line first statement after an open-brace? (or ;; If no, find that first statement and indent like it. (save-excursion (forward-char 1) (while (progn (skip-chars-forward " \t\n") (looking-at "#")) ;; Skip over comments following openbrace. (forward-line 1)) ;; The first following code counts ;; if it is before the line we want to indent. (and (< (point) indent-point) (current-column))) ;; If no previous statement, ;; indent it relative to line brace is on. ;; For open brace in column zero, don't let statement ;; start there too. If ess-indent-level is zero, ;; use ess-brace-offset + ess-continued-statement-offset instead. ;; For open-braces not the first thing in a line, ;; add in ess-brace-imaginary-offset. (+ (if (and (bolp) (zerop ess-indent-level)) (+ ess-brace-offset ess-continued-statement-offset) ess-indent-level) ;; Move back over whitespace before the openbrace. ;; If openbrace is not first nonwhite thing on the line, ;; add the ess-brace-imaginary-offset. (progn (skip-chars-backward " \t") (if (bolp) 0 ess-brace-imaginary-offset)) ;; If the openbrace is preceded by a parenthesized exp, ;; move to the beginning of that; ;; possibly a different line (progn (if (eq (preceding-char) ?\)) (forward-sexp -1)) ;; Get initial indentation of the line we are on. (current-indentation)))))))))) (defvar S-syntax-table nil "Syntax table for S code.") (if S-syntax-table nil (setq S-syntax-table (make-syntax-table)) (modify-syntax-entry ?\\ "\\" S-syntax-table) (modify-syntax-entry ?+ "." S-syntax-table) (modify-syntax-entry ?- "." S-syntax-table) (modify-syntax-entry ?= "." S-syntax-table) (modify-syntax-entry ?% "." S-syntax-table) (modify-syntax-entry ?< "." S-syntax-table) (modify-syntax-entry ?> "." S-syntax-table) (modify-syntax-entry ?& "." S-syntax-table) (modify-syntax-entry ?| "." S-syntax-table) (modify-syntax-entry ?\' "\"" S-syntax-table) (modify-syntax-entry ?# "<" S-syntax-table) ; open comment (modify-syntax-entry ?\n ">" S-syntax-table) ; close comment ;;(modify-syntax-entry ?. "w" S-syntax-table) ; "." used in S obj names (modify-syntax-entry ?. "_" S-syntax-table) ; see above/below, ; plus consider separation. (modify-syntax-entry ?$ "_" S-syntax-table) ; foo.bar$hack is 1 symbol (modify-syntax-entry ?_ "." S-syntax-table) (modify-syntax-entry ?* "." S-syntax-table) (modify-syntax-entry ?< "." S-syntax-table) (modify-syntax-entry ?> "." S-syntax-table) (modify-syntax-entry ?/ "." S-syntax-table)) (defvar S-editing-alist '((paragraph-start . (concat "^$\\|" page-delimiter)) (paragraph-separate . (concat "^$\\|" page-delimiter)) (paragraph-ignore-fill-prefix . t) (require-final-newline . t) (comment-start . "#") (comment-start-skip . "#+ *") (comment-column . 40) ;;(comment-indent-function . 'S-comment-indent) ;;(ess-comment-indent . 'S-comment-indent) ;;(ess-indent-line . 'S-indent-line) ;;(ess-calculate-indent . 'S-calculate-indent) (indent-line-function . 'S-indent-line) (parse-sexp-ignore-comments . t) (ess-set-style . ess-default-style) (ess-local-process-name . nil) ;;(ess-keep-dump-files . 'ask) (ess-mode-syntax-table . S-syntax-table) (font-lock-defaults . '(ess-mode-font-lock-keywords nil nil ((?\. . "w"))))) "General options for editing S, S+, and R source files.") ;;; Changes from S to S-PLUS 3.x. (standard S3 should be in essl-s!). (defconst S+-help-sec-keys-alist '((?a . "ARGUMENTS:") (?b . "BACKGROUND:") (?B . "BUGS:") (?d . "DESCRIPTION:") (?D . "DETAILS:") (?e . "EXAMPLES:") (?n . "NOTE:") (?O . "OPTIONAL ARGUMENTS:") (?R . "REQUIRED ARGUMENTS:") (?r . "REFERENCES:") (?s . "SEE ALSO:") (?S . "SIDE EFFECTS:") (?u . "USAGE:") (?v . "VALUE:")) "Alist of (key . string) pairs for use in section searching.") ;;; `key' indicates the keystroke to use to search for the section heading ;;; `string' in an S help file. `string' is used as part of a ;;; regexp-search, and so specials should be quoted. ;; S ver.3 (NOT S-Plus) (defconst S3-help-sec-keys-alist '((?a . "ARGUMENTS:") (?b . "BACKGROUND:") (?B . "BUGS:") (?d . "DESCRIPTION:") (?D . "DETAILS:") (?e . "EXAMPLES:") (?n . "NOTE:") (?r . "REFERENCES:") (?s . "SEE ALSO:") (?S . "SIDE EFFECTS:") (?u . "USAGE:") (?v . "VALUE:")) "Help section keys for S ver.3.") (defconst S4-help-sec-keys-alist '((?a . "ARGUMENTS:") (?b . "BACKGROUND:") (?B . "BUGS:") (?d . "DESCRIPTION:") (?D . "DETAILS:") (?e . "EXAMPLES:") (?n . "NOTE:") (?r . "REFERENCES:") (?s . "SEE ALSO:") (?S . "SIDE EFFECTS:") (?u . "USAGE:") (?v . "VALUE:")) "Help section keys for S4.") (defconst R-help-sec-keys-alist '((?a . "\\s *Arguments:") (?d . "\\s *Description:") (?e . "\\s *Examples:") (?n . "\\s *Note:") (?r . "\\s *References:") (?s . "\\s *See Also:") (?v . "\\s *Value[s]?") ; )) ;; "Alist of (key . string) pairs for use in section searching." (defconst ess-help-S+-sec-regex "^[A-Z. ---]+:$" "Reg(ular) Ex(pression) of section headers in help file") (defconst ess-help-R-sec-regex "^\\s *[A-Z[a-z. ---]+:$") ;;; S4 stuff. ;; --> moved to essd-s4.el ;;; S-mode extras of Martin Maechler, Statistik, ETH Zurich. ;;>> Moved things into --> ./ess-utils.el (defvar ess-function-outline-file (concat ess-lisp-directory "/../etc/" "function-outline.S") "The file name of the ess-function outline that is to be inserted at point, when \\\\[ess-insert-function-outline] is used. Placeholders (substituted `at runtime'): $A$ for `Author', $D$ for `Date'.") ;; Use the user's own ~/S/emacs-fun.outline is (s)he has one : --- (let ((outline-file (concat (getenv "HOME") "/S/function-outline.S"))) (if (file-exists-p outline-file) (setq ess-function-outline-file outline-file))) (defun ess-insert-function-outline () "Insert an S function definition `outline' at point. Uses the file given by the variable ess-function-outline-file." (interactive) (let ((oldpos (point))) (save-excursion (insert-file-contents ess-function-outline-file) (if (search-forward "$A$" nil t) (replace-match (user-full-name) 'not-upcase 'literal)) (goto-char oldpos) (if (search-forward "$D$" nil t) (replace-match (ess-time-string 'clock) 'not-upcase 'literal))) (goto-char (1+ oldpos)))) ;;*;; S/R Pretty-Editing (defun ess-fix-comments (&optional dont-query verbose) "Fix ess-mode buffer so that single-line comments start with at least `##'." (interactive "P") (save-excursion (goto-char (point-min)) (let ((rgxp "^\\([ \t]*#\\)\\([^#]\\)") (to "\\1#\\2")) (if dont-query (ess-rep-regexp rgxp to nil nil verbose) (query-replace-regexp rgxp to nil))))) (defun ess-dump-to-src (&optional dont-query verbose) "Make the changes in an S - dump() file to improve human readability" (interactive "P") (save-excursion (if (not (equal major-mode 'ess-mode)) (ess-mode)) (goto-char (point-min)) (let ((rgxp "^\"\\([a-z.][a-z.0-9]*\\)\"<-\n") (to "\n\\1 <- ")) (if dont-query (ess-rep-regexp rgxp to nil nil verbose) (query-replace-regexp rgxp to nil))))) (defun ess-num-var-round (&optional dont-query verbose) "Is VERY useful for dump(.)'ed numeric variables; ROUND some of them by replacing endings of 000000*.. and 999999*. Martin Maechler" (interactive "P") (save-excursion (goto-char (point-min)) (let ((num 0) (str "") (rgxp "000000+[1-9]?[1-9]?\\>") (to "")) (if dont-query (ess-rep-regexp rgxp to nil nil verbose) (query-replace-regexp rgxp to nil)) (while (< num 9) (setq str (concat (int-to-string num) "999999+[0-8]*")) (if (and (numberp verbose) (> verbose 1)) (message (format "\nregexp: '%s'" str))) (goto-char (point-min)) (ess-rep-regexp str (int-to-string (1+ num)) 'fixedcase 'literal verbose) (setq num (1+ num)))))) (defun ess-MM-fix-src (&optional dont-query verbose) "Clean up ess-source code which has been produced by dump(..). Produces more readable code, and one that is well formatted in emacs ess-mode. Martin Maechler, ETH Zurich." (interactive "P") ;; the 3 following functions each do a save-excursion: (ess-dump-to-src dont-query) (ess-fix-comments dont-query) (ess-num-var-round dont-query verbose)) (defun ess-add-MM-keys () (require 'ess-mode) (define-key ess-mode-map "\C-cf" 'ess-insert-function-outline)) (provide 'essl-s) ; Local variables section ;;; This file is automatically placed in Outline minor mode. ;;; The file is structured as follows: ;;; Chapters: ^L ; ;;; Sections: ;;*;; ;;; Subsections: ;;;*;;; ;;; Components: defuns, defvars, defconsts ;;; Random code beginning with a ;;;;* comment ;;; Local variables: ;;; mode: emacs-lisp ;;; outline-minor-mode: nil ;;; mode: outline-minor ;;; outline-regexp: "\^L\\|\\`;\\|;;\\*\\|;;;\\*\\|(def[cvu]\\|(setq\\|;;;;\\*" ;;; End: ;;; essl-s.el ends here