;;; ess-omg-l.el --- Support for editing Omega source code ;; Copyright (C) 1999--2001 A.J. Rossini. ;; Copyright (C) 2002--2004 A.J. Rossini, Richard M. Heiberger, Martin ;; Maechler, Kurt Hornik, Rodney Sparapani, and Stephen Eglen. ;; Author: A.J. Rossini ;; Created: 15 Aug 1999 ;; Maintainer: ESS-core ;; 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. ;; A copy of the GNU General Public License is available at ;; https://www.r-project.org/Licenses/ ;;; Commentary: ;; Code for general editing Omega source code. This is initially ;; based upon the similarities between Omega and S, but will need to ;; diverge to incorporate the use of Java-style coding. ;;; Code: (require 'ess-s-lang) ; Specialized functions (defun OMG-comment-indent () "Indentation for Omega comments." (if (looking-at "////") (current-column) (if (looking-at "///") (let ((tem (ess-calculate-indent))) (if (listp tem) (car tem) tem)) (skip-chars-backward " \t") (max (if (bolp) 0 (1+ (current-column))) comment-column)))) ;; (defun OMG-indent-line () ;; "Indent current line as Omega code. ;; Return the amount the indentation changed by." ;; (let ((indent (ess-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-indent-with-fancy-comments (looking-at "////")) ;; (setq indent 0)) ;; (if (and ess-indent-with-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-offset)))) ;; ((= (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 OMG-calculate-indent (&optional parse-start) ;; "Return appropriate indentation for current line as Omega 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-offset 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-offset)) ;; (+ ess-brace-offset ess-continued-statement-offset) ;; ess-indent-offset) ;; ;; 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 OMG-syntax-table nil "Syntax table for Omegahat 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) ;;FIXME: This fails (warning in compilation): ;;F "//" are 2 characters; ?// is invalid ;;F NEXT LINE IS BOGUS IN XEMACS, AJR ;;F (modify-syntax-entry ?// "<" S-syntax-table) ; open comment ;;F (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$hack is 1 symbol (modify-syntax-entry ?_ "." S-syntax-table) (modify-syntax-entry ?* "." S-syntax-table) (modify-syntax-entry ?< "." S-syntax-table) (modify-syntax-entry ?> "." S-syntax-table) (modify-syntax-entry ?/ "." S-syntax-table)) (defvar OMG-editing-alist '((paragraph-start . (concat "^$\\|" page-delimiter)) (paragraph-separate . (concat "^$\\|" page-delimiter)) (paragraph-ignore-fill-prefix . t) (require-final-newline . mode-require-final-newline) (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 . 'ess-calculate-indent) (indent-line-function . 'ess-indent-line) (parse-sexp-ignore-comments . t) (ess-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-OMG-font-lock-defaults nil nil ((?\. . "w"))))) "General options for Omegahat source files.") (defvar ess-OMG-font-lock-defaults (append (list (cons "\\b[0-9]+\\b" 'font-lock-type-face) ; numbers (cons (regexp-opt ess-S-keywords 'words) 'font-lock-keyword-face)) (list (cons (regexp-opt ess-S-assign-ops) 'font-lock-constant-face) ; assign (cons (regexp-opt ess-S-constants 'words) 'font-lock-type-face) ; constants (cons (regexp-opt ess-S-modifiers 'words) 'font-lock-constant-face) ; modify search list or source (cons ess-S-function-name-regexp '(1 font-lock-function-name-face keep)) ; function name (cons "\\s.\\|\\s(\\|\\s)" 'font-lock-function-name-face) ;punctuation and parents (same as function not to cause vidual disturbance) )) ; keywords "Font-lock patterns used in `OMG' buffers.") ;;; Changes from S to S-PLUS 3.x. (standard S3 should be in ess-s-lang.el !). (defconst OMG-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. (defconst ess-help-OMG-sec-regex "^[A-Z. ---]+:$" "Reg(ular) Ex(pression) of section headers in help file") ;;; S-mode extras of Martin Maechler, Statistik, ETH Zurich. ;;>> Moved things into --> ./ess-utils.el (provide 'ess-omg-l) ;;; ess-omg-l.el ends here