:
#
# Glenn Fowler
# AT&T Bell Laboratories
#
# make abstract machine executor with state
#
# @(#)mamexec (gsf@research.att.com) 07/17/94
#
# mamexec [ -dfins ] [ target ... ] < mam-file
#
# NOTE: variables defined in this script may conflict with
# mam-file variables
#
_command_=mamexec
_debug_=:
_diff_=.
_error_='exit 1'
_exec_=eval
_force_=
_list_=
_same_=.
_set_=
_silent_=
_state_list_=MAMlist
_state_time_=MAMtime
_tmp_=/tmp/mam.$$.mam
trap 'rm -f $_tmp_' 0
trap 'exit 2' 1 2
while :
do case $# in
0) break ;;
esac
case $1 in
--) shift
break
;;
-*) case $1 in
-*[abceghjklmopqrtuvwxyz_A-Z0-9]*) # [!...] not portable
echo "Usage: $_command_ [ -dfins ] [ target ... ] < mam-file" >&2; exit 2
;;
*) case $1 in
*d*) _debug_="eval echo $_command_: debug: >&2" ;;
esac
case $1 in
*f*) _force_=1 ;;
esac
case $1 in
*i*) _error_=: ;;
esac
case $1 in
*n*) _exec_=echo ;;
esac
case $1 in
*s*) _silent_=1 ;;
esac
;;
esac
;;
*) break
;;
esac
shift
done
_select_=
while :
do case $# in
0) break ;;
esac
case $1 in
*=*) eval $1
;;
*) case $_select_ in
"") _select_=$1 ;;
*) _select_="$_select_|$1" ;;
esac
;;
esac
shift
done
case $_select_ in
"") _select_="*" ;;
esac
(set -e; false || true) && _set_=e || echo $_command_: command errors ignored because of shell botch >&2
case $_silent_ in
"") _set_=x$_set_
;;
*) case $_exec_ in
"echo") _exec_=: ;;
esac
;;
esac
case $_exec_ in
"eval") _begin_="("
_end_=") </dev/null"
case $_set_ in
?*) _set_="set -$_set_;" ;;
esac
;;
*) _set_=
;;
esac
if test -f $_state_list_ -a -f $_state_time_
then mamstate $_state_list_ < $_state_list_ | sort > $_tmp_
for _i_ in `comm -12 $_state_time_ $_tmp_ | sed 's/ .*//'`
do case $_same_ in
.) _same_=$_i_ ;;
*) _same_="$_same_|$_i_" ;;
esac
done
fi
_index_=_
_match_=
case `(echo ok | (read -r a; echo $a) 2>/dev/null)` in
ok) _read_='read -r'
;;
*) # read strips \ -- thanks a lot
# tmp file avoids char at a time read
_read_=read
sed 's/\\/\\\\/g' > $_tmp_
exec < $_tmp_
rm -f $_tmp_
;;
esac
_old_=1
_ifs_=$IFS
while IFS=' '; $_read_ _op_ _arg_ _val_
do IFS=$_ifs_
case $_op_ in
"note") continue
;;
"info") case $_arg_ in
"mam") _old_= ;;
esac
continue
;;
"setv") eval _data_='$'$_arg_
case $_index_:$_data_ in
__*:*|*:)
case $_exec_ in
"eval") ;;
*) echo "$_arg_=$_val_" ;;
esac
eval $_arg_="$_val_" "</dev/null"
;;
esac
case $_arg_:$mam_cc_L in
"CC:") (
set -
mkdir /tmp/mam$$
cd /tmp/mam$$
echo 'main(){return 0;}' > main.c
code=1
fi
fi
cd /tmp
rm -rf /tmp/mam$$
exit $code
) </dev/null && mam_cc_L=' '
;;
esac
continue
;;
"make") eval _name_$_index_=$_name_
eval _prev_$_index_=$_prev_
eval _cmds_$_index_='"$_cmds_"'
eval _attr_$_index_=$_attr_
eval _name_=$_arg_
_prev_=$_index_
case " $_val_ " in
*" metarule "*) _attr_=m$_attr_ ;;
esac
_cmds_=
eval " case \"$_name_\" in
$_select_)
case \"$_select_\" in
\"*\") _select_=$_name_ ;;
esac
_match_=1
_attr_=x$_attr_
;;
esac"
case $_force_ in
"") eval " case \"$_name_\" in
$_diff_)_attr_=u$_attr_ ;;
$_same_);;
*) _attr_=u$_attr_ ;;
esac"
;;
*) _attr_=u$_attr_
;;
esac
case $_attr_ in
*u*) case $_diff_ in
.) _diff_=$_name_ ;;
*) _diff_="$_diff_|$_name_" ;;
esac
;;
esac
_index_=_$_index_
eval _name_$_index_=$_name_
eval _prev_$_index_=$_prev_
eval _cmds_$_index_=$_cmds_
eval _attr_$_index_=$_attr_
eval _list_='"'"$_list_"'
'$_name_'"'
continue
;;
"prev") case $_force_ in
"") eval " case \"$_arg_\" in
$_diff_)_attr_=u$_attr_ ;;
$_same_) ;;
*) _attr_=u$_attr_ ;;
esac"
;;
*) _attr_=u$_attr_
;;
esac
continue
;;
esac
case $_index_ in
_) echo $_op_: missing make op >&2; continue ;;
esac
case $_op_ in
"attr") case $_val_ in
"meta"|"suff") _attr_=m$_attr_ ;;
esac
;;
"exec"|"....")
case $_old_ in
"") _arg_=$_val_
;;
*) case $_val_ in
?*) _arg_="$_arg_ $_val_" ;;
esac
;;
esac
case $_cmds_ in
"") _cmds_=$_arg_
;;
*) _cmds_="$_cmds_
$_arg_"
;;
esac
;;
"done") eval _arg_=$_arg_
_prop_=
case $_arg_ in
$_name_)case $_attr_ in
*m*) ;;
*x*u*|*u*x*)
case $_cmds_ in
"") case $_attr_ in
*u*) _prop_=u ;;
esac
;;
*) $_exec_ "$_begin_$_set_$_cmds_$_end_" ||
{
_code_=$?
case $_set_ in
*-*e*) ;;
*) case $_cmds_ in
*if*then*fi*|"||") _code_=0 ;;
esac
;;
esac
case $_code_ in
0) ;;
*) echo "*** exit code $_code_ making $_name_" >&2
$_error_
;;
esac
}
_prop_=u
;;
esac
;;
esac
_index_=$_prev_
eval _name_='$'_name_$_index_
eval _prev_='$'_prev_$_index_
eval _cmds_='$'_cmds_$_index_
eval _attr_=$_prop_'$'_attr_$_index_
;;
*) echo $_val_: $_op_ $_name_ expected >&2
;;
esac
;;
esac
done
IFS=$_ifs_
case $_match_ in
"") echo "$_command_: don't know how to make $_select_" >&2; $_error_ ;;
esac
case $_exec_ in
"eval") echo "$_list_" > $_state_list_
mamstate $_state_list_ < $_state_list_ | sort > $_state_time_
;;
esac