annotate src/lisp-union.h @ 793:e38acbeb1cae

[xemacs-hg @ 2002-03-29 04:46:17 by ben] lots o' fixes etc/ChangeLog: New file. Separated out all entries for etc/ into their own ChangeLog. Includes entries for the following files: etc/BABYL, etc/BETA, etc/CHARSETS, etc/DISTRIB, etc/Emacs.ad, etc/FTP, etc/GNUS-NEWS, etc/GOATS, etc/HELLO, etc/INSTALL, etc/MACHINES, etc/MAILINGLISTS, etc/MSDOS, etc/MYTHOLOGY, etc/NEWS, etc/OXYMORONS, etc/PACKAGES, etc/README, etc/TUTORIAL, etc/TUTORIAL.de, etc/TUTORIAL.ja, etc/TUTORIAL.ko, etc/TUTORIAL.se, etc/aliases.ksh, etc/altrasoft-logo.xpm, etc/check_cygwin_setup.sh, etc/custom/example-themes/europe-theme.el, etc/custom/example-themes/ex-custom-file, etc/custom/example-themes/example-theme.el, etc/e/eterm.ti, etc/edt-user.doc, etc/enriched.doc, etc/etags.1, etc/gnuserv.1, etc/gnuserv.README, etc/package-index.LATEST.gpg, etc/package-index.LATEST.pgp, etc/photos/jan.png, etc/recycle.xpm, etc/refcard.tex, etc/sample.Xdefaults, etc/sample.emacs, etc/sgml/CATALOG, etc/sgml/HTML32.dtd, etc/skk/SKK.tut.E, etc/smilies/Face_ase.xbm, etc/smilies/Face_ase2.xbm, etc/smilies/Face_ase3.xbm, etc/smilies/Face_smile.xbm, etc/smilies/Face_weep.xbm, etc/sounds, etc/toolbar, etc/toolbar/workshop-cap-up.xpm, etc/xemacs-ja.1, etc/xemacs.1, etc/yow.lines, etc\BETA, etc\NEWS, etc\README, etc\TUTORIAL, etc\TUTORIAL.de, etc\check_cygwin_setup.sh, etc\sample.init.el, etc\unicode\README, etc\unicode\mule-ucs\*, etc\unicode\other\* unicode/unicode-consortium/8859-16.TXT: New file. mule/english.el: Define this charset now, since a bug was fixed that formerly prevented it. mule/ethio-util.el: Fix compile errors involving Unicode `characters', which should be integers. Makefile.in.in: Always include gui.c, to fix compile error when TTY-only. EmacsFrame.c, abbrev.c, alloc.c, buffer.c, buffer.h, bytecode.c, bytecode.h, callint.c, callproc.c, casetab.c, casetab.h, charset.h, chartab.c, chartab.h, cmds.c, console-msw.c, console-msw.h, console-tty.c, console-x.c, console-x.h, console.c, console.h, data.c, database.c, device-gtk.c, device-msw.c, device-x.c, device.c, device.h, dialog-msw.c, doc.c, doprnt.c, dumper.c, dynarr.c, editfns.c, eldap.c, eldap.h, elhash.c, elhash.h, emacs.c, eval.c, event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, event-tty.c, event-unixoid.c, events.c, events.h, extents.c, extents.h, faces.c, faces.h, file-coding.c, file-coding.h, fileio.c, filelock.c, fns.c, frame-gtk.c, frame-msw.c, frame-tty.c, frame-x.c, frame.c, frame.h, free-hook.c, general-slots.h, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-widget.c, glyphs-x.c, glyphs.c, glyphs.h, gpmevent.c, gtk-xemacs.c, gui-msw.c, gui-x.c, gui-x.h, gui.c, gui.h, gutter.c, gutter.h, indent.c, input-method-xlib.c, insdel.c, keymap.c, keymap.h, lisp-disunion.h, lisp-union.h, lisp.h, lread.c, lrecord.h, lstream.c, lstream.h, marker.c, menubar-gtk.c, menubar-msw.c, menubar-x.c, menubar.c, minibuf.c, mule-canna.c, mule-ccl.c, mule-charset.c, mule-wnnfns.c, native-gtk-toolbar.c, objects-msw.c, objects-tty.c, objects-x.c, objects.c, objects.h, opaque.c, opaque.h, postgresql.c, postgresql.h, print.c, process-unix.c, process.c, process.h, rangetab.c, rangetab.h, redisplay-gtk.c, redisplay-msw.c, redisplay-output.c, redisplay-tty.c, redisplay-x.c, redisplay.c, scrollbar-gtk.c, scrollbar-msw.c, scrollbar-x.c, scrollbar.c, scrollbar.h, search.c, select-gtk.c, select-x.c, sound.c, specifier.c, specifier.h, strftime.c, symbols.c, symeval.h, syntax.h, text.c, text.h, toolbar-common.c, toolbar-msw.c, toolbar.c, toolbar.h, tooltalk.c, tooltalk.h, ui-gtk.c, ui-gtk.h, undo.c, vm-limit.c, window.c, window.h: Eliminate XSETFOO. Replace all usages with wrap_foo(). Make symbol->name a Lisp_Object, not Lisp_String *. Eliminate nearly all uses of Lisp_String * in favor of Lisp_Object, and correct macros so most of them favor Lisp_Object. Create new error-behavior ERROR_ME_DEBUG_WARN -- output warnings, but at level `debug' (usually ignored). Use it when instantiating specifiers, so problems can be debugged. Move log-warning-minimum-level into C so that we can optimize ERROR_ME_DEBUG_WARN. Fix warning levels consistent with new definitions. Add default_ and parent fields to char table; not yet implemented. New fun Dynarr_verify(); use for further error checking on Dynarrs. Rearrange code at top of lisp.h in conjunction with dynarr changes. Fix eifree(). Use Eistrings in various places (format_event_object(), where_is_to_char(), and callers thereof) to avoid fixed-size strings buffers. New fun write_eistring(). Reindent and fix GPM code to follow standards. Set default MS Windows font to Lucida Console (same size as Courier New but less interline spacing, so more lines fit). Increase default frame size on Windows to 50 lines. (If that's too big for the workspace, the frame will be shrunk as necessary.) Fix problem with text files with no newlines (). (Change `convert-eol' coding system to use `nil' for autodetect, consistent with make-coding-system.) Correct compile warnings in vm-limit.c. Fix handling of reverse-direction charsets to avoid errors when opening (e.g.) mule-ucs/lisp/reldata/uiso8859-6.el. Recode some object printing methods to use write_fmt_string() instead of a fixed buffer and sprintf. Turn on display of png comments as warnings (level `info'), now that they're unobtrusive. Revamped the sound documentation. Fixed bug in redisplay w.r.t. hscroll/truncation/continuation glyphs causing jumping up and down of the lines, since they're bigger than the line size. (It was seen most obviously when there's a horizontal scroll bar, e.g. do C-h a glyph or something like that.) The problem was that the glyph-contrib-p setting on glyphs was ignored even if it was set properly, which it wasn't until now.
author ben
date Fri, 29 Mar 2002 04:49:13 +0000
parents af57a77cbc92
children a5954632b187
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1 /* Fundamental definitions for XEmacs Lisp interpreter -- union objects.
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2 Copyright (C) 1985, 1986, 1987, 1992, 1993, 1994
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3 Free Software Foundation, Inc.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Divergent from FSF. */
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23
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24 /* Definition of Lisp_Object type as a union.
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25 The declaration order of the objects within the struct members
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26 of the union is dependent on ENDIAN-ness.
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27 See lisp-disunion.h for more details. */
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28
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29 typedef
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30 union Lisp_Object
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31 {
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32 /* if non-valbits are at lower addresses */
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33 #ifdef WORDS_BIGENDIAN
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34 struct
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35 {
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36 EMACS_UINT val : VALBITS;
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37 enum_field (Lisp_Type) type : GCTYPEBITS;
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38 } gu;
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39
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40 struct
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41 {
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42 signed EMACS_INT val : INT_VALBITS;
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43 unsigned int bits : INT_GCBITS;
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44 } s;
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45
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46 struct
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47 {
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48 EMACS_UINT val : INT_VALBITS;
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49 unsigned int bits : INT_GCBITS;
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50 } u;
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51 #else /* non-valbits are at higher addresses */
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52 struct
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53 {
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54 enum_field (Lisp_Type) type : GCTYPEBITS;
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55 EMACS_UINT val : VALBITS;
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56 } gu;
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57
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58 struct
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59 {
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60 unsigned int bits : INT_GCBITS;
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61 signed EMACS_INT val : INT_VALBITS;
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62 } s;
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63
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64 struct
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65 {
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66 unsigned int bits : INT_GCBITS;
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67 EMACS_UINT val : INT_VALBITS;
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68 } u;
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69
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70 #endif /* non-valbits are at higher addresses */
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71
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72 EMACS_UINT ui;
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73 signed EMACS_INT i;
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74
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75 /* This was formerly declared 'void *v' etc. but that causes
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76 GCC to accept any (yes, any) pointer as the argument of
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77 a function declared to accept a Lisp_Object. */
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78 struct nosuchstruct *v;
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79 const struct nosuchstruct *cv;
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80 }
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81 Lisp_Object;
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82
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83 #define XCHARVAL(x) ((x).gu.val)
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84 # define XPNTRVAL(x) ((x).ui)
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85
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86 INLINE_HEADER Lisp_Object make_int (EMACS_INT val);
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87 INLINE_HEADER Lisp_Object
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88 make_int (EMACS_INT val)
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89 {
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90 Lisp_Object obj;
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91 obj.s.bits = 1;
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92 obj.s.val = val;
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93 return obj;
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94 }
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95
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96 INLINE_HEADER Lisp_Object make_char (Emchar val);
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97 INLINE_HEADER Lisp_Object
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98 make_char (Emchar val)
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99 {
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100 Lisp_Object obj;
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101 obj.gu.type = Lisp_Type_Char;
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102 obj.gu.val = val;
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103 return obj;
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104 }
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105
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106 INLINE_HEADER Lisp_Object wrap_pointer_1 (void *ptr);
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107 INLINE_HEADER Lisp_Object
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108 wrap_pointer_1 (void *ptr)
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109 {
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110 Lisp_Object obj;
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111 obj.ui = (EMACS_UINT) ptr;
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112 return obj;
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113 }
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114
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115 extern Lisp_Object Qnull_pointer, Qzero;
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116
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117 #define XREALINT(x) ((x).s.val)
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118 #define XUINT(x) ((x).u.val)
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119 #define XTYPE(x) ((x).gu.type)
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120 #define EQ(x,y) ((x).v == (y).v)
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121
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122 #define INTP(x) ((x).s.bits)
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123 #define INT_PLUS(x,y) make_int (XINT (x) + XINT (y))
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124 #define INT_MINUS(x,y) make_int (XINT (x) - XINT (y))
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125 #define INT_PLUS1(x) make_int (XINT (x) + 1)
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126 #define INT_MINUS1(x) make_int (XINT (x) - 1)
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127
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128 /* Convert between a (void *) and a Lisp_Object, as when the
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129 Lisp_Object is passed to a toolkit callback function */
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130 #define VOID_TO_LISP(larg,varg) \
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131 ((void) ((larg).v = (struct nosuchstruct *) (varg)))
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132 #define CVOID_TO_LISP(larg,varg) \
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133 ((void) ((larg).cv = (const struct nosuchstruct *) (varg)))
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134 #define LISP_TO_VOID(larg) ((void *) ((larg).v))
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135 #define LISP_TO_CVOID(larg) ((const void *) ((larg).cv))
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136
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137 /* Convert a Lisp_Object into something that can't be used as an
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138 lvalue. Useful for type-checking. */
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139 #if (__GNUC__ > 1)
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140 #define NON_LVALUE(larg) ({ (larg); })
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141 #else
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142 /* Well, you can't really do it without using a function call, and
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143 there's no real point in that; no-union-type is the rule, and that
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144 will catch errors. */
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145 #define NON_LVALUE(larg) (larg)
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146 #endif