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# spec/ysh-case
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## our_shell: ysh
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## oils_failures_allowed: 0
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const x = "header.h"
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case (x) {
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*.h | *.cc { echo C++ }
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*.py { echo Python }
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}
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# not recommended, but it works
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case (x) { header.h { echo header.h } * { echo other } }
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## status: 0
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## STDOUT:
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C++
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header.h
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## END
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const x = "hello.py"
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case (x) {
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*.h | *.cc {
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echo C++
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echo 2; echo 3
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}
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*.py {
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echo \
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Python
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}
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}
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## status: 0
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## STDOUT:
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Python
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## END
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const x = 3
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case (x) {
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(3) { echo three }
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(4) { echo four }
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}
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## status: 0
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## STDOUT:
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three
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## END
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const x = 3
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case (x) {
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(1 + 2) { echo three }
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(2 + 2) { echo four }
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}
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## STDOUT:
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three
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## END
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const x = 2
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case (x) {
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(3) { echo three }
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(4) { echo four }
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}
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## status: 0
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## STDOUT:
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## END
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const x = "main.cc"
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case (x) {
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/ dot* '.py' / {
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echo Python
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}
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/ dot* ('.cc' | '.h') / {
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echo C++
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}
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}
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## STDOUT:
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C++
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## END
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const x = 'MAIN.PY'
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case (x) {
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/ dot* '.py' ; i / {
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echo Python
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}
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/ dot* ('.cc' | '.h') / {
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echo C++
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}
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}
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## STDOUT:
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Python
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## END
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const x = ""
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case (x) { }
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## status: 0
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## STDOUT:
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## END
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const x = "0"
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case (x) {
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(0) { echo int }
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("0") { echo string }
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}
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## status: 0
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## STDOUT:
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string
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## END
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for name in foo/foo.py bar/bar.cc zz {
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case (name) {
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/ '/f' <capture dot*> '.' / { echo "g0=$[_group(0)] g1=$[_group(1)]" }
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/ '/b' <capture dot*> '.' / { echo "g0=$[_group(1)] g1=$[_group(1)]" }
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(else) { echo 'no match' }
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}
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}
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## status: 0
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## STDOUT:
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g0=/foo. g1=oo
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g0=ar g1=ar
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no match
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## END
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var x = 123
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case (x) {
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(else) { echo else matches all }
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(123) { echo unreachable }
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}
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## status: 0
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## STDOUT:
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else matches all
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## END
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var x = 123
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case (x) {
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(x) | (y) { echo no error }
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}
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## status: 0
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## STDOUT:
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no error
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## END
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var x = 123
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case (x) {
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(y) | (x) { echo no error }
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}
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## status: 1
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## STDOUT:
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## END
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var x = "abc"
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case (x) {
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$x | $y { echo no error }
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}
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## status: 0
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## STDOUT:
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no error
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## END
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var x = "abc"
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case (x) {
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$y | $x { echo no error }
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}
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## status: 1
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## STDOUT:
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## END
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var x = "42"
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case (x) {
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('42') { echo a }
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42 { echo b }
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/ '42' / { echo c }
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(Str(40 + 2)) { echo d }
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# even errors are ignored
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(42 / 0) { echo no error }
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}
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## status: 0
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## STDOUT:
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a
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## END
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var x = "42"
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case (x) {
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(42 / 0) { echo no error }
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('42') { echo a }
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42 { echo b }
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/ '42' / { echo c }
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(Str(40 + 2)) { echo d }
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}
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## status: 3
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## STDOUT:
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## END
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for flag in -f -x {
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# We can disallow this with shopt --unset parse_old_case, because the new
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# case statement does everything the old one does
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#
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# bin/osh and shopt --set ysh:upgrade let you use both styles, but bin/ysh
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# only lets you use the new style
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case $flag in
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-f|-d)
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echo 'file'
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;;
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*)
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echo 'other'
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;;
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esac
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case (flag) {
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-f|-d { echo 'file' }
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* { echo 'other' }
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}
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echo --
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}
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## STDOUT:
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file
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file
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--
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other
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other
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--
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## END
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