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# -*- shell-script -*-
# condition.sh - gdb-like "condition" debugger command
#
# Copyright (C) 2009 Rocky Bernstein rocky@gnu.org
#
# zshdb is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2, or (at your option) any later
# version.
#
# zshdb is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with zshdb; see the file COPYING. If not, write to the Free Software
# Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
_Dbg_help_add condition \
"condition N COND -- Break only if COND is true in breakpoint number N.
N is an integer and COND is an expression to be evaluated whenever
breakpoint N is reached."
# Set a condition for a given breakpoint $1 is a breakpoint number
# $2 is a condition. If not given, set "unconditional" or 1.
# returns 0 if success or 1 if fail.
function _Dbg_do_condition {
if (( $# < 1 )) ; then
_Dbg_errmsg 'condition: Argument required (breakpoint number).'
return 1
fi
typeset -r n=$1
shift
typeset condition="$@"
if [[ $n != [0-9]* ]]; then
_Dbg_errmsg "condition: Bad breakpoint number: $n"
return 1
fi
if [[ -z ${_Dbg_brkpt_file[$n]} ]] ; then
_Dbg_errmsg "condition: Breakpoint entry $n is not set. Condition not changed."
return 1
fi
if [[ -z $condition ]] ; then
condition=1
_Dbg_msg "Breakpoint $n now unconditional."
fi
_Dbg_brkpt_cond[$n]="$condition"
return 0
}
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