Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.

Bug 328256

Summary:	support multiple case expressions
Product:	z_Archived	Reporter:	Henrik Lindberg <henrik.lindberg>
Component:	b3	Assignee:	Project Inbox <b3.engine-inbox>
Status:	RESOLVED FIXED	QA Contact:
Severity:	enhancement
Priority:	P3
Version:	unspecified
Target Milestone:	---
Hardware:	All
OS:	All
Whiteboard:

Description Henrik Lindberg

2010-10-20 11:20:52 EDT

Since a case expression does not support "fall through", it becomes difficult to write a switch statement where the same expression/sequence of expressions is shared among cases. The case statement should take a list of expressions.

switch sExpr case expr1, expr2, ... : expr case ... endswitch

Semantics are that sExpr is evaluated and comared against the case expressions, the case with the first matching expression result is used. If sExpr is missing - the default sExpr value is TRUE and the selection works the same way.

Comment 1 Henrik Lindberg

2010-10-20 22:20:37 EDT

Multiple case expressions are now supported.
Validation checks if an _ is used in a position other than the last and marks this as an error.
A quick fix is offered to move the _ last in the list.

Additional validation could be made - as it is quite meaningless to have additional expression if the last is ANY. (e.g. case 1, 2, _: ... - which is the same as just case _: ... ).