JDK-8210923 : JShell: support for switch expressions
- Type: Bug
- Component: tools
- Sub-Component: jshell
- Affected Version: 12
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- Submitted: 2018-09-19
- Updated: 2018-11-06
- Resolved: 2018-10-22
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| JDK 12 |
|---|
12 b17Fixed  |
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Description
Switch expressions in statements appear to work fine, but they are not recognized as expressions. For example:
jshell> switch (day) {
...> case MONDAY, FRIDAY, SUNDAY -> 6;
...> case TUESDAY -> 7;
...> case THURSDAY, SATURDAY -> 8;
...> case WEDNESDAY -> 9;
...> }
| Error:
| not a statement
| case MONDAY, FRIDAY, SUNDAY -> 6;
| ^
| Error:
| not a statement
| case TUESDAY -> 7;
| ^
| Error:
| not a statement
| case THURSDAY, SATURDAY -> 8;
| ^
| Error:
| not a statement
| case WEDNESDAY -> 9;
| ^
This is due to "switch" triggering the statement path of code analysis and parsing.
Completion needs to be addressed as well. For example,
switch (day) {
case MONDAY, FRIDAY, SUNDAY -> 6;
case TUESDAY -> 7;
case WEDNESDAY -> 9;
case THURSDAY, SATURDAY -> 8;
} + 100
does not include the "+ 100". This may be hard to address.
-Robert
Comments
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