gdb/observer.sh

   1 #!/bin/sh -e
   2
   3 if test $# -ne 3
   4 then
   5     echo "Usage: $0 <h|inc> <observer.texi> <observer.out>" 1>&2
   6     exit 0
   7 fi
   8
   9 lang=$1 ; shift
  10 texi=$1 ; shift
  11 o=$1
  12 otmp="`echo $1 | sed -e 's,\.[^.]*$,,'`.tmp"; shift
  13 echo "Creating ${otmp}" 1>&2
  14 rm -f ${otmp}
  15
  16 # Can use any of the following: cat cmp cp diff echo egrep expr false
  17 # grep install-info ln ls mkdir mv pwd rm rmdir sed sleep sort tar
  18 # test touch true
  19
  20 cat <<EOF >>${otmp}
  21 /* GDB Notifications to Observers.
  22
  23    Copyright 2004, 2005 Free Software Foundation, Inc.
  24
  25    This file is part of GDB.
  26
  27    This program is free software; you can redistribute it and/or modify
  28    it under the terms of the GNU General Public License as published by
  29    the Free Software Foundation; either version 2 of the License, or
  30    (at your option) any later version.
  31
  32    This program is distributed in the hope that it will be useful,
  33    but WITHOUT ANY WARRANTY; without even the implied warranty of
  34    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  35    GNU General Public License for more details.
  36
  37    You should have received a copy of the GNU General Public License
  38    along with this program; if not, write to the Free Software
  39    Foundation, Inc., 59 Temple Place - Suite 330,
  40    Boston, MA 02111-1307, USA.
  41
  42    --
  43
  44    This file was generated using observer.sh and observer.texi.  */
  45
  46 EOF
  47
  48
  49 case $lang in
  50     h) cat <<EOF >>${otmp}
  51 #ifndef OBSERVER_H
  52 #define OBSERVER_H
  53
  54 struct observer;
  55 struct bpstats;
  56 struct so_list;
  57 EOF
  58         ;;
  59 esac
  60
  61
  62 # generate a list of events that can be observed
  63
  64 IFS=:
  65 sed -n '
  66 /@deftypefun void/{
  67 # Save original line for later processing into the actual parameter
  68     h
  69 # Convert from: @deftypefun void EVENT (TYPE @var{PARAM},...)
  70 # to event and formals: EVENT:TYPE PARAM, ...:
  71     s/^.* void \([a-z_][a-z_]*\) (\(.*\))$/\1:\2/
  72     s/@var{//g
  73     s/}//g
  74 # Switch to held
  75     x
  76 # Convert from: @deftypefun void FUNC (TYPE @var{PARAM},...)
  77 # to actuals: PARAM, ...
  78     s/^[^{]*[{]*//
  79     s/[}]*[^}]*$//
  80     s/}[^{]*{/, /g
  81 # Combine held (EVENT:TYPE PARAM, ...:) and pattern (PARAM, ...) into
  82 # FUNC:TYPE PARAM, ...:PARAM, ...
  83     H
  84     x
  85     s/\n/:/g
  86     p
  87 }
  88 ' $texi | while read event formal actual
  89 do
  90   case $lang in
  91       h) cat <<EOF >>${otmp}
  92
  93 /* ${event} notifications.  */
  94
  95 typedef void (observer_${event}_ftype) (${formal});
  96
  97 extern struct observer *observer_attach_${event} (observer_${event}_ftype *f);
  98 extern void observer_detach_${event} (struct observer *observer);
  99 extern void observer_notify_${event} (${formal});
 100 EOF
 101         ;;
 102
 103       inc)
 104         cat <<EOF >>${otmp}
 105
 106 /* ${event} notifications.  */
 107
 108 static struct observer_list *${event}_subject = NULL;
 109
 110 struct ${event}_args { `echo "${formal}" | sed -e 's/,/;/g'`; };
 111
 112 static void
 113 observer_${event}_notification_stub (const void *data, const void *args_data)
 114 {
 115   observer_${event}_ftype *notify = (observer_${event}_ftype *) data;
 116   const struct ${event}_args *args = args_data;
 117   notify (`echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args->\1/g'`);
 118 }
 119
 120 struct observer *
 121 observer_attach_${event} (observer_${event}_ftype *f)
 122 {
 123   return generic_observer_attach (&${event}_subject,
 124                                   &observer_${event}_notification_stub,
 125                                   (void *) f);
 126 }
 127
 128 void
 129 observer_detach_${event} (struct observer *observer)
 130 {
 131   generic_observer_detach (&${event}_subject, observer);
 132 }
 133
 134 void
 135 observer_notify_${event} (${formal})
 136 {
 137   struct ${event}_args args;
 138   `echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args.\1 = \1/g'`;
 139   if (observer_debug)
 140     fprintf_unfiltered (gdb_stdlog, "observer_notify_${event}() called\n");
 141   generic_observer_notify (${event}_subject, &args);
 142 }
 143 EOF
 144         ;;
 145     esac
 146 done
 147
 148
 149 case $lang in
 150     h) cat <<EOF >>${otmp}
 151
 152 #endif /* OBSERVER_H */
 153 EOF
 154 esac
 155
 156
 157 echo Moving ${otmp} to ${o}
 158 mv ${otmp} ${o}