annotate lisp/alist.el @ 4917:fce43cb76a1c

xlike cleanup, documentation -------------------- ChangeLog entries follow: -------------------- man/ChangeLog addition: 2010-02-03 Ben Wing <ben@xemacs.org> * internals/internals.texi (Top): * internals/internals.texi (Evaluation; Stack Frames; Bindings): * internals/internals.texi (Ben's README): * internals/internals.texi (Consoles; Devices; Frames; Windows): * internals/internals.texi (Window Hierarchy): * internals/internals.texi (The Window Object): * internals/internals.texi (Modules for the Basic Displayable Lisp Objects): * internals/internals.texi (Window-System Support): * internals/internals.texi (Creating a Window-System Type): * internals/internals.texi (Discussion -- Garbage Collection): Update the part at the top about how to maintain the file with more tips. Add a chapter on "window-system support" describing in a general way how the support for different window systems/device types works, including the separation between device-independent and device-dependent parts, device methods, the specific device types and the "xlike" pseudo-type. src/ChangeLog addition: 2010-02-03 Ben Wing <ben@xemacs.org> * Makefile.in.in: * Makefile.in.in (x_objs): * Makefile.in.in (gtk_gui_objs): * console-xlike-inc.h: * depend: * device-x.c: * emacs.c: * gccache-gtk.h: * gccache-gtk.h (gc_cache_lookup): * gccache-x.c: * gccache-x.c (GCCACHE_HASH): * gccache-x.h: * toolbar-gtk.c: * toolbar-gtk.c (gtk_initialize_frame_toolbars): * toolbar-x.c: * toolbar-x.c (x_initialize_frame_toolbars): * toolbar-xlike.c: * toolbar-xlike.c (xlike_draw_blank_toolbar_button): * toolbar-xlike.c (xlike_output_toolbar_button): * toolbar-xlike.c (xlike_get_button_size): * toolbar-xlike.c (XLIKE_OUTPUT_BUTTONS_LOOP): * toolbar-xlike.c (xlike_output_toolbar): * toolbar-xlike.c (xlike_clear_toolbar): * toolbar-xlike.c (xlike_output_frame_toolbars): * toolbar-xlike.c (xlike_clear_frame_toolbars): * toolbar-xlike.c (xlike_redraw_exposed_toolbar): * toolbar-xlike.c (xlike_redraw_exposed_toolbars): * toolbar-xlike.c (xlike_redraw_frame_toolbars): * toolbar-xlike.h: * toolbar-xlike.h (xlike_clear_frame_toolbars): Rename some files to make them consistent with general naming rules: xgccache.c -> gccache-x.c xgccache.h -> gccache-x.h toolbar-common.c -> toolbar-xlike.c toolbar-common.h -> toolbar-xlike.h Fix include-file references. Also change the names of functions in now-named toolbar-xlike.c to be xlike_foo() instead of common_foo(). Add a longish comment in console-xlike-inc.h describing the "xlike" system, how it works and what the various files are used for.
author Ben Wing <ben@xemacs.org>
date Wed, 03 Feb 2010 02:46:50 -0600
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children 9e51b172d50f 91b3aa59f49b
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1 ;;; alist.el --- utility functions about association-list
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2
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3 ;; Copyright (C) 1993,1994,1995,1996,1998 Free Software Foundation, Inc.
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4
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5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
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6 ;; Keywords: alist
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7
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8 ;; This file is part of APEL (A Portable Emacs Library).
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9
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10 ;; This program is free software; you can redistribute it and/or
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11 ;; modify it under the terms of the GNU General Public License as
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12 ;; published by the Free Software Foundation; either version 2, or (at
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13 ;; your option) any later version.
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14
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15 ;; This program is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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023b83f4e54b [xemacs-hg @ 2001-06-10 10:42:16 by ben]
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21 ;; along with XEmacs; see the file COPYING. If not, write to the
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22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 ;; Boston, MA 02111-1307, USA.
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24
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25
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26 ;;;###autoload
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27 (defun vassoc (key valist)
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28 "Search VALIST for a vector whose first element is equal to KEY.
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29 See also `assoc'."
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30 ;; by Stig@hackvan.com
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31 (let (el)
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32 (catch 'done
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33 (while (setq el (pop valist))
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34 (and (equal key (aref el 0))
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35 (throw 'done el))))))
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36
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37
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38 ;;;###autoload
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39 (defun put-alist (item value alist)
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40 "Modify ALIST to set VALUE to ITEM.
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41 If there is a pair whose car is ITEM, replace its cdr by VALUE.
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42 If there is not such pair, create new pair (ITEM . VALUE) and
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43 return new alist whose car is the new pair and cdr is ALIST.
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44 \[tomo's ELIS like function]"
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45 (let ((pair (assoc item alist)))
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46 (if pair
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47 (progn
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48 (setcdr pair value)
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49 alist)
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50 (cons (cons item value) alist)
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51 )))
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52
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53 ;;;###autoload
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54 (defun del-alist (item alist)
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55 "If there is a pair whose key is ITEM, delete it from ALIST.
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56 \[tomo's ELIS emulating function]"
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57 (if (equal item (car (car alist)))
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58 (cdr alist)
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59 (let ((pr alist)
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60 (r (cdr alist))
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61 )
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62 (catch 'tag
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63 (while (not (null r))
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64 (if (equal item (car (car r)))
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65 (progn
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66 (rplacd pr (cdr r))
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67 (throw 'tag alist)))
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68 (setq pr r)
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69 (setq r (cdr r))
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70 )
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71 alist))))
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72
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73 ;;;###autoload
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74 (defun set-alist (symbol item value)
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75 "Modify a alist indicated by SYMBOL to set VALUE to ITEM."
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76 (or (boundp symbol)
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77 (set symbol nil)
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78 )
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79 (set symbol (put-alist item value (symbol-value symbol)))
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80 )
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81
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82 ;;;###autoload
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83 (defun remove-alist (symbol item)
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84 "Remove ITEM from the alist indicated by SYMBOL."
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85 (and (boundp symbol)
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86 (set symbol (del-alist item (symbol-value symbol)))
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87 ))
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88
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89 ;;;###autoload
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90 (defun modify-alist (modifier default)
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91 "Modify alist DEFAULT into alist MODIFIER."
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92 (mapc
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93 (function
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94 (lambda (as)
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95 (setq default (put-alist (car as)(cdr as) default))))
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96 modifier)
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97 default)
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98
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99 ;;;###autoload
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100 (defun set-modified-alist (sym modifier)
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101 "Modify a value of a symbol SYM into alist MODIFIER.
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102 The symbol SYM should be alist. If it is not bound,
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103 its value regard as nil."
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104 (if (not (boundp sym))
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105 (set sym nil)
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106 )
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107 (set sym (modify-alist modifier (eval sym)))
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108 )
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109
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110
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111 ;;; @ end
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112 ;;;
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113
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114 (provide 'alist)
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115
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116 ;;; alist.el ends here