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# spec/ysh-builtin-error
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## our_shell: ysh
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try
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echo status=$?
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## status: 3
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## STDOUT:
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## END
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func divide(a, b) {
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if (b === 0) {
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error 'divide by zero' (code=3)
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}
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return (a / b)
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}
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# errors can be caught with try
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try { = divide(42, 0) }
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echo status=$_status
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= divide(42, 0)
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## status: 3
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## STDOUT:
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status=3
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## END
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echo $[type(_error)]
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echo $[len(_error)]
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## STDOUT:
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Dict
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0
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## END
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func divide(a, b) {
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if (b === 0) {
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error "divide by zero: $a / $b" (code=3)
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}
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return (a / b)
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}
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try { = divide(42, 0) }
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echo status=$_status
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echo message=$[_error.message]
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proc p {
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echo $[divide(5, 0)]
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}
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try { p }
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echo status=$_status
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echo message=$[_error.message]
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## STDOUT:
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status=3
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message=divide by zero: 42 / 0
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status=3
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message=divide by zero: 5 / 0
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## END
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try {
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error 'bad' (code=99)
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}
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pp line (_error)
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# Note: myData co
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try {
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error 'bad' (code=99, myData={spam:'eggs'})
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}
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pp line (_error)
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try {
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error 'bad' (code=99, message='cannot override')
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}
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pp line (_error)
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## STDOUT:
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(Dict) {"code":99,"message":"bad"}
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(Dict) {"myData":{"spam":"eggs"},"code":99,"message":"bad"}
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(Dict) {"message":"bad","code":99}
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## END
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func inverse(x) {
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if (x === 0) {
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error '0 does not have an inverse' # default status is 1
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}
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return (1 / x)
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}
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func invertList(list) {
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var result = []
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for item in (list) {
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call result->append(inverse(item))
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}
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return (result)
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}
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= invertList([1, 2, 0])
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## status: 10
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## STDOUT:
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## END
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func alwaysError() {
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error "it's an error" (status=100)
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}
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try {
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var mylist = [1 + 2, alwaysError()]
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echo this will never be printed
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}
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= mylist # undefined! status becomes 1
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## status: 1
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## STDOUT:
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## END
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error 'some error'
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## status: 10
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## STDOUT:
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## END
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error 'error' (code='a string?')
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## status: 3
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## STDOUT:
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## END
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error msg (100)
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## status: 3
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## STDOUT:
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## END
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error uh-oh ('error', status=1)
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## status: 3
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## STDOUT:
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## END
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error
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## status: 2
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## STDOUT:
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## END
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error ('error', code=0)
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## status: 2
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## STDOUT:
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## END
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try { error oops }
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echo status=$_status
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## STDOUT:
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status=10
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## END
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proc failing {
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error 'failed' (code=99)
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}
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try {
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failing
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}
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if (_error.code === 99) {
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echo PASS
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}
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try {
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failing
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}
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case (_error.code) {
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(0) { echo success }
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(1) { echo one }
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(else) { echo CASE PASS }
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}
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## STDOUT:
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PASS
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CASE PASS
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## END
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set +o errexit
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try { echo ok }
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failed (42)
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echo status=$?
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try { echo ok }
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# Too many args
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failed a b
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echo status=$?
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## STDOUT:
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ok
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status=2
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ok
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status=2
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## END
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try {
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echo hi
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}
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if failed {
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echo 'should not get here'
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} else {
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echo 'ok 1'
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}
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try {
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#test -n ''
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# Hm json read sets the regular error
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# Should we raise error.Structured?
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#json read <<< '{'
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var x = fromJson('{')
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# Hm the error is in a SUBPROCESS HERE
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#echo '{' | json read
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}
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if failed {
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echo 'ok 2'
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} else {
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echo 'should not get here'
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}
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## STDOUT:
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hi
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ok 1
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ok 2
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## END
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try {
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$SH -c '
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assert (true)
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echo passed
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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func f() { return (false) }
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assert (f())
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echo "unreachable"
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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assert (null)
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echo "unreachable"
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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func f() { return (false) }
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assert (true === f())
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echo "unreachable"
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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assert (42 === 42)
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echo passed
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'
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}
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echo code $[_error.code]
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echo
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## STDOUT:
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passed
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code 0
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code 3
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code 3
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code 3
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passed
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code 0
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## END
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try {
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$SH -c '
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assert [true]
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echo passed
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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func f() { return (false) }
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assert [f()]
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echo "unreachable"
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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assert [null]
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echo "unreachable"
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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func f() { return (false) }
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assert [true === f()]
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echo "unreachable"
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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assert [42 === 42]
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echo passed
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'
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}
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echo code $[_error.code]
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echo
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## STDOUT:
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passed
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code 0
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code 3
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code 3
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code 3
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passed
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code 0
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## END
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try {
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$SH -c '
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assert [NAN === 1/0] # not true
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echo unreachable
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'
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}
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echo code $[_error.code]
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echo
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try {
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$SH -c '
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assert ["oof" === $(false)]
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echo unreachable
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'
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}
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echo code $[_error.code]
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echo
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## STDOUT:
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code 3
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code 1
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## END
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try {
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$SH -c '
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#pp line (42 === 42 === 43)
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assert [42 === 42 === 43]
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echo unreachable
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'
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}
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echo code $[_error.code]
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echo
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## STDOUT:
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code 3
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## END
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