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# -*- shell-script -*-
# where.cmd - gdb-like "where" debugger command
#
# Copyright (C) 2008 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.
# This code assumes the version of zsh where functrace has file names
# and absolute line positions, not function names and offset.
_Dbg_help_add where \
"where [N] -- Print a backtrace of calling functions and sourced files.
The backtrace contains function names, arguments, line numbers, and
files. If N is given, list only N calls."
# Print a stack backtrace.
# $1 is the maximum number of entries to include.
_Dbg_do_backtrace() {
_Dbg_not_running && return 1
typeset prefix='##'
typeset -i n=${#_Dbg_frame_stack[@]}
typeset -i count=${1:-$n}
typeset -i i
# Loop which dumps out stack trace.
for (( i=0 ; (( i < n && count > 0 )) ; i++ )) ; do
typeset prefix='##'
(( i == _Dbg_stack_pos)) && prefix='->'
prefix+="$i "
if ((i!=0)) ; then
prefix+="${_Dbg_func_stack[i-1]} called from"
else
prefix+='in'
fi
_Dbg_print_frame "$i" "$prefix"
((count--))
done
return 0
}
_Dbg_alias_add bt where
_Dbg_alias_add T where
_Dbg_alias_add backtrace where
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