#   This program 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 3 of the License, or
#   (at your option) any later version.
#
#   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
#

# arithmetic operators for conditional commands and arithmetic commands

declare -A assoc
declare -a index

key='x],b[$(echo uname >&2)'
key1=']'
key2='` echo >&2 foo`'
key3='~'
key4='7<(4+2)'
key5='$( echo 2>& date)'
key6='$(echo foo)'

[[ -n assoc[$key] ]]
declare -p assoc

assoc[$key]=42
assoc[$key1]=12
assoc[$key2]=128
assoc[$key3]=42
assoc[0]=0

[[ assoc[$key] -eq assoc[$key] ]]
echo $?

[[ assoc[$key] -gt assoc[$key1] ]]
echo $?

[[ assoc[$key2] -lt assoc[$key] ]]
echo $?

[[ assoc[$key] -eq assoc[$key3] ]]
echo $?

[[ index[7<(4+2)] -le assoc[0] ]]
echo $?
[[ index[$key4] -le assoc[0] ]]
echo $?

assoc[$key5]=foo
declare -p assoc

echo "${assoc[$key5]}"

[[ -v assoc[$key5] ]]
echo $?
[[ -v assoc[$key] ]]
echo $?

unset assoc

declare -a array
index='0],b[1';
((array[$index]++))

declare -p array

unset array

declare -A assoc

assoc[$key]=42
assoc[$key4]=42

[[ -v assoc[$key] ]]
echo $?
[[ -v assoc["$key"] ]]
echo $?

[[ -v assoc[$key4] ]]
echo $?
[[ -v assoc["$key4"] ]]
echo $?

[[ -v assoc['$key'] ]]
echo $?
[[ -v assoc['$key4'] ]]
echo $?

unset -v assoc

declare -A aa
aa[$key5]=foo

declare -p aa
echo "${aa[$key5]}"

[[ -v aa[$key5] ]]
echo $?

[[ -v aa[$key] ]]
echo $?

aa[$key6]=42
# this still performs expansion
test -v aa["$key6"]
echo $?
# should be an error
test -v aa[$key6]
echo $?

unset aa key

declare -A assoc
    
mytest ()
{
        assoc["$1"]=123
        [[ -v assoc["$1"] ]]
        printf '[[ -v assoc[%s] ]]; $?=%s\n' "$1" "$?"
}
    
mytest 'a' 
mytest '"' 
declare -p assoc
unset -v assoc
unset -f mytest