| switch-case null issue [message #633645] |
Mon, 18 October 2010 12:36  |
Eclipse User |
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Hi,
I encountered a strange behavior inside a switch-case statement. It comes down to this.
rule exampleTrafo
transform d : Source!Domain
to d : Target!Domain{
var choice = "bigDecision";
switch(choice){
case "bigDecision" :
var temp = createSomething();
if(not temp.isDefined())
"ohh boy".println();
}
}
operation createSomething() : Target!Element1{
var returnValue = new Target!Element1;
if(returnValue.isDefined())
"I'm ready to go".println();
return returnValue;
}
I would expect to get a plain "I'm ready to go" , unfortunately I get the following output:
Buildfile: /Users/henning/Documents/workspaces/diplom/my.example/launch .xml
loadModels:
main:
[epsilon.etl - exampleTrafo.etl] I'm ready to go
[epsilon.etl - exampleTrafo.etl] ohh boy
BUILD SUCCESSFUL
Total time: 246 milliseconds
Is this behavior intended?
Best regards,
Henning
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| Re: switch-case null issue [message #633665 is a reply to message #633645] |
Mon, 18 October 2010 14:12  |
| Eclipse User |
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Hi Henning,
Thanks for reporting this! You've uncovered another bug it seems! I've
located the problem and will fix it shortly. In the meantime, when you
perform an assignment within a case "x" please use := instead of =
e.g. var temp := createSomething();
Cheers,
Dimitris
On 18/10/2010 17:36, Henning wrote:
> Hi,
>
> I encountered a strange behavior inside a switch-case statement. It
> comes down to this.
>
>
> rule exampleTrafo
> transform d : Source!Domain
> to d : Target!Domain{
>
> var choice = "bigDecision";
>
> switch(choice){
> case "bigDecision" : var temp = createSomething();
> if(not temp.isDefined())
> "ohh boy".println();
> }
> }
>
> operation createSomething() : Target!Element1{
> var returnValue = new Target!Element1;
> if(returnValue.isDefined())
> "I'm ready to go".println();
> return returnValue;
> }
>
>
> I would expect to get a plain "I'm ready to go" , unfortunately I get
> the following output:
>
> Buildfile: /Users/henning/Documents/workspaces/diplom/my.example/launch
> .xml
>
> loadModels:
>
> main:
> [epsilon.etl - exampleTrafo.etl] I'm ready to go
> [epsilon.etl - exampleTrafo.etl] ohh boy
> BUILD SUCCESSFUL
> Total time: 246 milliseconds
>
> Is this behavior intended?
>
> Best regards,
>
> Henning
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