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#!/usr/bin/env zsh
# Towers of Hanoi
set -u
init() {
_Dbg_debugger; :
}
hanoi() {
typeset -i n=$1
typeset -r a=$2
typeset -r b=$3
typeset -r c=$4
_Dbg_debugger
if (( n > 0 )) ; then
(( n-- ))
hanoi $n $a $c $b
((disc_num=max-n))
echo "Move disk $n on $a to $b"
if (( n > 0 )) ; then
hanoi $n $c $b $a
fi
fi
}
if (( $# > 0 )) ; then
top_builddir=$1
elif [[ -z ${top_builddir:-''} ]] ; then
top_builddir=$PWD/../..
fi
if [[ -z ${top_srcdir:-''} ]] ; then
top_srcdir=$PWD/../..
fi
if (( $# > 1 )); then
cmdfile=$2
else
srcdir=${top_srcdir:-'.'}
cmdfile=${top_srcdir}/test/data/settrace.cmd
fi
source ${top_builddir}/dbg-trace.sh -q -L $top_builddir -B -x $cmdfile
typeset -i max=1
init
hanoi $max 'a' 'b' 'c'
_Dbg_debugger 1 _Dbg_do_quit
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