gdb/observer.sh

   1 #!/bin/sh -e
   2
   3 # Make certain that the script is not running in an internationalized
   4 # environment.
   5 LANG=c ; export LANG
   6 LC_ALL=c ; export LC_ALL
   7
   8 if test $# -ne 3
   9 then
  10     echo "Usage: $0 <h|inc> <observer.texi> <observer.out>" 1>&2
  11     exit 0
  12 fi
  13
  14 lang=$1 ; shift
  15 texi=$1 ; shift
  16 o=$1
  17 case $lang in
  18   h) tmp=htmp ;;
  19   inc) tmp=itmp ;;
  20 esac
  21 otmp="`echo $1 | sed -e 's,\.[^.]*$,,'`.$tmp"; shift
  22 echo "Creating ${otmp}" 1>&2
  23 rm -f ${otmp}
  24
  25 # Can use any of the following: cat cmp cp diff echo egrep expr false
  26 # grep install-info ln ls mkdir mv pwd rm rmdir sed sleep sort tar
  27 # test touch true
  28
  29 cat <<EOF >>${otmp}
  30 /* GDB Notifications to Observers.
  31
  32    Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
  33
  34    This file is part of GDB.
  35
  36    This program is free software; you can redistribute it and/or modify
  37    it under the terms of the GNU General Public License as published by
  38    the Free Software Foundation; either version 3 of the License, or
  39    (at your option) any later version.
  40
  41    This program is distributed in the hope that it will be useful,
  42    but WITHOUT ANY WARRANTY; without even the implied warranty of
  43    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  44    GNU General Public License for more details.
  45
  46    You should have received a copy of the GNU General Public License
  47    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  48
  49    --
  50
  51    This file was generated using observer.sh and observer.texi.  */
  52
  53 EOF
  54
  55
  56 case $lang in
  57     h) cat <<EOF >>${otmp}
  58 #ifndef OBSERVER_H
  59 #define OBSERVER_H
  60
  61 struct observer;
  62 struct bpstats;
  63 struct so_list;
  64 struct objfile;
  65 EOF
  66         ;;
  67 esac
  68
  69 # We are about to set IFS=:, so DOS-style file names with a drive
  70 # letter and a colon will be in trouble.
  71
  72 if test -n "$DJGPP"
  73 then
  74      texi=`echo $texi | sed -e 's,^\([a-zA-Z]\):/,/dev/\1/,'`
  75 fi
  76
  77 # generate a list of events that can be observed
  78
  79 IFS=:
  80 sed -n '
  81 /@deftypefun void/{
  82 # Save original line for later processing into the actual parameter
  83     h
  84 # Convert from: @deftypefun void EVENT (TYPE @var{PARAM},...)
  85 # to event and formals: EVENT:TYPE PARAM, ...:
  86     s/^.* void \([a-z_][a-z_]*\) (\(.*\))$/\1:\2/
  87     s/@var{//g
  88     s/}//g
  89 # Switch to held
  90     x
  91 # Convert from: @deftypefun void FUNC (TYPE @var{PARAM},...)
  92 # to actuals: PARAM, ...
  93     s/^[^{]*[{]*//
  94     s/[}]*[^}]*$//
  95     s/}[^{]*{/, /g
  96 # Combine held (EVENT:TYPE PARAM, ...:) and pattern (PARAM, ...) into
  97 # FUNC:TYPE PARAM, ...:PARAM, ...
  98     H
  99     x
 100     s/\n/:/g
 101     p
 102 }
 103 ' $texi | while read event formal actual
 104 do
 105   case $lang in
 106       h) cat <<EOF >>${otmp}
 107
 108 /* ${event} notifications.  */
 109
 110 typedef void (observer_${event}_ftype) (${formal});
 111
 112 extern struct observer *observer_attach_${event} (observer_${event}_ftype *f);
 113 extern void observer_detach_${event} (struct observer *observer);
 114 extern void observer_notify_${event} (${formal});
 115 EOF
 116         ;;
 117
 118       inc)
 119         cat <<EOF >>${otmp}
 120
 121 /* ${event} notifications.  */
 122
 123 static struct observer_list *${event}_subject = NULL;
 124
 125 struct ${event}_args { `echo "${formal}" | sed -e 's/,/;/g'`; };
 126
 127 static void
 128 observer_${event}_notification_stub (const void *data, const void *args_data)
 129 {
 130   observer_${event}_ftype *notify = (observer_${event}_ftype *) data;
 131   const struct ${event}_args *args = args_data;
 132   notify (`echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args->\1/g'`);
 133 }
 134
 135 struct observer *
 136 observer_attach_${event} (observer_${event}_ftype *f)
 137 {
 138   return generic_observer_attach (&${event}_subject,
 139                                   &observer_${event}_notification_stub,
 140                                   (void *) f);
 141 }
 142
 143 void
 144 observer_detach_${event} (struct observer *observer)
 145 {
 146   generic_observer_detach (&${event}_subject, observer);
 147 }
 148
 149 void
 150 observer_notify_${event} (${formal})
 151 {
 152   struct ${event}_args args;
 153   `echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args.\1 = \1/g'`;
 154   if (observer_debug)
 155     fprintf_unfiltered (gdb_stdlog, "observer_notify_${event}() called\n");
 156   generic_observer_notify (${event}_subject, &args);
 157 }
 158 EOF
 159         ;;
 160     esac
 161 done
 162
 163
 164 case $lang in
 165     h) cat <<EOF >>${otmp}
 166
 167 #endif /* OBSERVER_H */
 168 EOF
 169 esac
 170
 171
 172 echo Moving ${otmp} to ${o}
 173 mv ${otmp} ${o}