mirror of
https://git.savannah.gnu.org/git/emacs.git
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437 lines
12 KiB
EmacsLisp
437 lines
12 KiB
EmacsLisp
;;; mlsupport.el --- run-time support for mocklisp code
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;; Copyright (C) 1985, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: extensions
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; This package provides equivalents of certain primitives from Gosling
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;; Emacs (including the commercial UniPress versions). These have an
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;; ml- prefix to distinguish them from native GNU Emacs functions with
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;; similar names. The package mlconvert.el translates Mocklisp code
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;; to use these names.
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;;; Code:
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(defmacro ml-defun (&rest defs)
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(list 'ml-defun-1 (list 'quote defs)))
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(defun ml-defun-1 (args)
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(while args
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(fset (car (car args)) (cons 'mocklisp (cdr (car args))))
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(setq args (cdr args))))
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(defmacro declare-buffer-specific (&rest vars)
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(cons 'progn (mapcar (function (lambda (var) (list 'make-variable-buffer-local (list 'quote var)))) vars)))
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(defun ml-set-default (varname value)
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(set-default (intern varname) value))
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; Lossage: must make various things default missing args to the prefix arg
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; Alternatively, must make provide-prefix-argument do something hairy.
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(defun >> (val count) (lsh val (- count)))
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(defun novalue () nil)
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(defun ml-not (arg) (if (zerop arg) 1 0))
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(defun provide-prefix-arg (arg form)
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(funcall (car form) arg))
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(defun define-keymap (name)
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(fset (intern name) (make-keymap)))
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;; Make it work to use ml-use-...-map on "esc" and such.
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(fset 'esc-map esc-map)
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(fset 'ctl-x-map ctl-x-map)
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(defun ml-use-local-map (name)
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(use-local-map (intern (concat name "-map"))))
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(defun ml-use-global-map (name)
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(use-global-map (intern (concat name "-map"))))
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(defun local-bind-to-key (name key)
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(or (current-local-map)
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(use-local-map (make-keymap)))
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(define-key (current-local-map)
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(if (integerp key)
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(if (>= key 128)
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(concat (char-to-string meta-prefix-char)
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(char-to-string (- key 128)))
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(char-to-string key))
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key)
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(intern name)))
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(defun bind-to-key (name key)
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(define-key global-map (if (integerp key) (char-to-string key) key)
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(intern name)))
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(defun ml-autoload (name file)
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(autoload (intern name) file))
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(defun ml-define-string-macro (name defn)
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(fset (intern name) defn))
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(defun push-back-character (char)
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(setq unread-command-events (list char)))
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(defun to-col (column)
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(indent-to column 0))
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(defmacro is-bound (&rest syms)
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(cons 'and (mapcar (function (lambda (sym) (list 'boundp (list 'quote sym)))) syms)))
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(defmacro declare-global (&rest syms)
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(cons 'progn (mapcar (function (lambda (sym) (list 'defvar sym nil))) syms)))
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(defmacro error-occurred (&rest body)
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(list 'condition-case nil (cons 'progn (append body '(nil))) '(error t)))
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(defun return-prefix-argument (value)
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(setq prefix-arg value))
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(defun ml-prefix-argument ()
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(if (null current-prefix-arg) 1
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(if (listp current-prefix-arg) (car current-prefix-arg)
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(if (eq current-prefix-arg '-) -1
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current-prefix-arg))))
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(defun ml-print (varname)
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(interactive "vPrint variable: ")
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(if (boundp varname)
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(message "%s => %s" (symbol-name varname) (symbol-value varname))
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(message "%s has no value" (symbol-name varname))))
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(defun ml-set (str val) (set (intern str) val))
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(defun ml-message (&rest args) (message "%s" (apply 'concat args)))
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(defun kill-to-end-of-line ()
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(ml-prefix-argument-loop
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(if (eolp)
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(kill-region (point) (1+ (point)))
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(kill-region (point) (if (search-forward ?\n nil t)
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(1- (point)) (point-max))))))
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(defun set-auto-fill-hook (arg)
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(setq auto-fill-function (intern arg)))
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(defun auto-execute (function pattern)
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(if (/= (aref pattern 0) ?*)
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(error "Only patterns starting with * supported in auto-execute"))
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(setq auto-mode-alist (cons (cons (concat "\\." (substring pattern 1)
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"\\'")
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function)
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auto-mode-alist)))
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(defun move-to-comment-column ()
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(indent-to comment-column))
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(defun erase-region ()
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(delete-region (point) (mark)))
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(defun delete-region-to-buffer (bufname)
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(copy-to-buffer bufname (point) (mark))
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(delete-region (point) (mark)))
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(defun copy-region-to-buffer (bufname)
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(copy-to-buffer bufname (point) (mark)))
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(defun append-region-to-buffer (bufname)
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(append-to-buffer bufname (point) (mark)))
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(defun prepend-region-to-buffer (bufname)
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(prepend-to-buffer bufname (point) (mark)))
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(defun delete-next-character ()
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(delete-char (ml-prefix-argument)))
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(defun delete-next-word ()
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(delete-region (point) (progn (forward-word (ml-prefix-argument)) (point))))
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(defun delete-previous-word ()
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(delete-region (point) (progn (backward-word (ml-prefix-argument)) (point))))
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(defun delete-previous-character ()
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(delete-backward-char (ml-prefix-argument)))
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(defun forward-character ()
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(forward-char (ml-prefix-argument)))
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(defun backward-character ()
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(backward-char (ml-prefix-argument)))
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(defun ml-newline ()
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(newline (ml-prefix-argument)))
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(defun ml-next-line ()
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(next-line (ml-prefix-argument)))
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(defun ml-previous-line ()
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(previous-line (ml-prefix-argument)))
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(defun delete-to-kill-buffer ()
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(kill-region (point) (mark)))
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(defun narrow-region ()
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(narrow-to-region (point) (mark)))
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(defun ml-newline-and-indent ()
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(let ((column (current-indentation)))
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(newline (ml-prefix-argument))
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(indent-to column)))
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(defun newline-and-backup ()
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(open-line (ml-prefix-argument)))
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(defun quote-char ()
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(quoted-insert (ml-prefix-argument)))
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(defun ml-current-column ()
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(1+ (current-column)))
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(defun ml-current-indent ()
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(1+ (current-indentation)))
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(defun region-around-match (&optional n)
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(set-mark (match-beginning n))
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(goto-char (match-end n)))
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(defun region-to-string ()
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(buffer-substring (min (point) (mark)) (max (point) (mark))))
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(defun use-abbrev-table (name)
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(let ((symbol (intern (concat name "-abbrev-table"))))
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(or (boundp symbol)
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(define-abbrev-table symbol nil))
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(symbol-value symbol)))
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(defun define-hooked-local-abbrev (name exp hook)
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(define-abbrev local-abbrev-table name exp (intern hook)))
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(defun define-hooked-global-abbrev (name exp hook)
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(define-abbrev global-abbrev-table name exp (intern hook)))
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(defun case-word-lower ()
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(ml-casify-word 'downcase-region))
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(defun case-word-upper ()
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(ml-casify-word 'upcase-region))
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(defun case-word-capitalize ()
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(ml-casify-word 'capitalize-region))
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(defun ml-casify-word (fun)
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(save-excursion
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(forward-char 1)
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(forward-word -1)
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(funcall fun (point)
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(progn (forward-word (ml-prefix-argument))
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(point)))))
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(defun case-region-lower ()
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(downcase-region (point) (mark)))
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(defun case-region-upper ()
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(upcase-region (point) (mark)))
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(defun case-region-capitalize ()
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(capitalize-region (point) (mark)))
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(defvar saved-command-line-args nil)
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(defun argc ()
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(or saved-command-line-args
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(setq saved-command-line-args command-line-args
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command-line-args ()))
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(length command-line-args))
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(defun argv (i)
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(or saved-command-line-args
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(setq saved-command-line-args command-line-args
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command-line-args ()))
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(nth i saved-command-line-args))
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(defun invisible-argc ()
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(length (or saved-command-line-args
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command-line-args)))
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(defun invisible-argv (i)
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(nth i (or saved-command-line-args
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command-line-args)))
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(defun exit-emacs ()
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(interactive)
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(condition-case ()
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(exit-recursive-edit)
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(error (kill-emacs))))
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;; Lisp function buffer-size returns total including invisible;
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;; mocklisp wants just visible.
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(defun ml-buffer-size ()
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(- (point-max) (point-min)))
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(defun previous-command ()
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last-command)
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(defun beginning-of-window ()
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(goto-char (window-start)))
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(defun end-of-window ()
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(goto-char (window-start))
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(vertical-motion (- (window-height) 2)))
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(defun ml-search-forward (string)
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(search-forward string nil nil (ml-prefix-argument)))
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(defun ml-re-search-forward (string)
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(re-search-forward string nil nil (ml-prefix-argument)))
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(defun ml-search-backward (string)
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(search-backward string nil nil (ml-prefix-argument)))
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(defun ml-re-search-backward (string)
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(re-search-backward string nil nil (ml-prefix-argument)))
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(defvar use-users-shell 1
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"Mocklisp compatibility variable; 1 means use shell from SHELL env var.
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0 means use /bin/sh.")
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(defvar use-csh-option-f 1
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"Mocklisp compatibility variable; 1 means pass -f when calling csh.")
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(defun filter-region (command)
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(let* ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
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(csh (equal (file-name-nondirectory shell) "csh")))
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(call-process-region (point) (mark) shell t t nil
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(if (and csh use-csh-option-f) "-cf" "-c")
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(concat "exec " command))))
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(defun execute-monitor-command (command)
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(let* ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
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(csh (equal (file-name-nondirectory shell) "csh")))
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(call-process shell nil t t
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(if (and csh use-csh-option-f) "-cf" "-c")
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(concat "exec " command))))
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(defun use-syntax-table (name)
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(set-syntax-table (symbol-value (intern (concat name "-syntax-table")))))
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(defun line-to-top-of-window ()
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(recenter (1- (ml-prefix-argument))))
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(defun ml-previous-page (&optional arg)
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(let ((count (or arg (ml-prefix-argument))))
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(while (> count 0)
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(scroll-down nil)
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(setq count (1- count)))
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(while (< count 0)
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(scroll-up nil)
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(setq count (1+ count)))))
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(defun ml-next-page ()
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(previous-page (- (ml-prefix-argument))))
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(defun page-next-window (&optional arg)
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(let ((count (or arg (ml-prefix-argument))))
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(while (> count 0)
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(scroll-other-window nil)
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(setq count (1- count)))
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(while (< count 0)
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(scroll-other-window '-)
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(setq count (1+ count)))))
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(defun ml-next-window ()
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(select-window (next-window)))
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(defun ml-previous-window ()
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(select-window (previous-window)))
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(defun scroll-one-line-up ()
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(scroll-up (ml-prefix-argument)))
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(defun scroll-one-line-down ()
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(scroll-down (ml-prefix-argument)))
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(defun split-current-window ()
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(split-window (selected-window)))
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(defun last-key-struck () last-command-char)
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(defun execute-mlisp-line (string)
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(eval (read string)))
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(defun move-dot-to-x-y (x y)
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(goto-char (window-start (selected-window)))
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(vertical-motion (1- y))
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(move-to-column (1- x)))
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(defun ml-modify-syntax-entry (string)
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(let ((i 5)
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(len (length string))
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(datastring (substring string 0 2)))
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(if (= (aref string 0) ?\-)
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(aset datastring 0 ?\ ))
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(if (= (aref string 2) ?\{)
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(if (= (aref string 4) ?\ )
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(aset datastring 0 ?\<)
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(error "Two-char comment delimiter: use modify-syntax-entry directly")))
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(if (= (aref string 3) ?\})
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(if (= (aref string 4) ?\ )
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(aset datastring 0 ?\>)
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(error "Two-char comment delimiter: use modify-syntax-entry directly")))
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(while (< i len)
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(modify-syntax-entry (aref string i) datastring)
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(setq i (1+ i))
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(if (and (< i len)
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(= (aref string i) ?\-))
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(let ((c (aref string (1- i)))
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(lim (aref string (1+ i))))
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(while (<= c lim)
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(modify-syntax-entry c datastring)
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(setq c (1+ c)))
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(setq i (+ 2 i)))))))
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(defun ml-substr (string from to)
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(let ((length (length string)))
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(if (< from 0) (setq from (+ from length)))
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(if (< to 0) (setq to (+ to length)))
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(substring string from (+ from to))))
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(defun ml-concat (&rest args)
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(let ((newargs nil) this)
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(while args
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(setq this (car args))
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(if (numberp this)
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(setq this (number-to-string this)))
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(setq newargs (cons this newargs)
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args (cdr args)))
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(apply 'concat (nreverse newargs))))
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(provide 'mlsupport)
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;;; arch-tag: b0ad09bc-8cb2-4be0-8888-2e874839bcbc
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;;; mlsupport.el ends here
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