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# |
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# Tests for bash's type flags on cells. Hopefully we don't have to implement |
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# this, but it's good to know the behavior. |
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# |
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# OSH follows a Python-ish model of types carried with values/objects, not |
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# locations. |
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# |
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# See https://github.com/oilshell/oil/issues/26 |
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|
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#### declare -i with += |
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declare s |
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s='1 ' |
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s+=' 2 ' # string append |
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|
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declare -i i |
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i='1 ' |
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i+=' 2 ' # arith add |
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|
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declare -i j |
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j=x # treated like zero |
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j+=' 2 ' # arith add |
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|
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echo "[$s]" |
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echo $i |
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echo $j |
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## STDOUT: |
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[1 2 ] |
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3 |
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2 |
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## END |
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|
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#### declare -i with arithmetic inside strings (Nix, issue 864) |
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|
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# example |
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# https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L379 |
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|
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declare -i s |
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s='1 + 2' |
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echo s=$s |
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|
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declare -a array=(1 2 3) |
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declare -i item |
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item='array[1+1]' |
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echo item=$item |
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|
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## STDOUT: |
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s=3 |
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item=3 |
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## END |
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|
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#### append in arith context |
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declare s |
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(( s='1 ')) |
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(( s+=' 2 ')) # arith add |
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declare -i i |
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(( i='1 ' )) |
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(( i+=' 2 ' )) |
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declare -i j |
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(( j='x ' )) # treated like zero |
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(( j+=' 2 ' )) |
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echo "$s|$i|$j" |
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## stdout: 3|3|2 |
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|
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#### declare array vs. string: mixing -a +a and () '' |
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# dynamic parsing of first argument. |
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declare +a 'xyz1=1' |
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declare +a 'xyz2=(2 3)' |
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declare -a 'xyz3=4' |
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declare -a 'xyz4=(5 6)' |
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argv.py "${xyz1}" "${xyz2}" "${xyz3[@]}" "${xyz4[@]}" |
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## stdout: ['1', '(2 3)', '4', '5', '6'] |
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|
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#### declare array vs. associative array |
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# Hm I don't understand why the array only has one element. I guess because |
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# index 0 is used twice? |
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declare -a 'array=([a]=b [c]=d)' |
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declare -A 'assoc=([a]=b [c]=d)' |
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argv.py "${#array[@]}" "${!array[@]}" "${array[@]}" |
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argv.py "${#assoc[@]}" "${!assoc[@]}" "${assoc[@]}" |
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## stdout-json: "['1', '0', 'd']\n['2', 'a', 'c', 'b', 'd']\n" |