[ExM Users] multiple returns allowed in Swift/T

[Tim Armstrong]

I think the problem is _outB4, which is an undeclared variable.  This
shouldn't result in a null pointer exception: I'll create a ticket to fix
it and produce a more helpful error.

 Tim



On Wed, Aug 7, 2013 at 8:31 PM, Ketan Maheshwari <ketancmaheshwari at gmail.com
> wrote:

> Hi Tim,
>
> I made the change as you suggested but now I am getting java NPE:
>
> $ stc mimo.swift > mimo.tcl
> STC INTERNAL ERROR
> Please report this
> java.lang.NullPointerException
>     at exm.stc.frontend.ASTWalker.evalAppCmdArgs(ASTWalker.java:2431)
>     at exm.stc.frontend.ASTWalker.genAppFunctionBody(ASTWalker.java:2188)
>     at exm.stc.frontend.ASTWalker.compileAppFunction(ASTWalker.java:2155)
>     at exm.stc.frontend.ASTWalker.walkTopLevelCompile(ASTWalker.java:327)
>     at exm.stc.frontend.ASTWalker.walkTopLevel(ASTWalker.java:237)
>     at exm.stc.frontend.ASTWalker.walkFile(ASTWalker.java:199)
>     at exm.stc.frontend.ASTWalker.loadModule(ASTWalker.java:385)
>     at exm.stc.frontend.ASTWalker.walk(ASTWalker.java:168)
>     at exm.stc.ui.STCompiler.compile(STCompiler.java:76)
>     at exm.stc.ui.Main.main(Main.java:93)
>
> The script is as below:
>
> import files;
> import io;
> import string;
> import sys;
>
> app (file _outB1, file _outB2, file _outB3) A (file _inA1, file _inA2,
> file _inA3){
>     "mimo.sh" @_inA1 @_inA2 @_inA3 @_outB1 @_outB2 @_outB3 @_outB4;
>     }
>
> main{
>
> file in_a1=input_file("sample.txt");
> file in_a2=input_file("sample.txt");
> file in_a3=input_file("sample.txt");
> file in_a4=input_file("sample.txt");
>
> foreach i in [0:1]{
>    string outb1=sprintf("/tmp/swift.work/outb1-%i.dat", i);
>    string outb2=sprintf("/tmp/swift.work/outb2-%i.dat", i);
>    string outb3=sprintf("/tmp/swift.work/outb3-%i.dat", i);
>    string outb4=sprintf("/tmp/swift.work/outb4-%i.dat", i);
>
>    file o1 <outb1>;
>    file o2 <outb2>;
>    file o3 <outb3>;
>    file o4 <outb4>;
>
>    (o1, o2, o3, o4) = A (in_a1, in_a2, in_a3, in_a4);
>
> }
> }
>
> Thanks,
> Ketan
>
>
>
> On Wed, Aug 7, 2013 at 8:06 PM, Tim Armstrong <tim.g.armstrong at gmail.com>wrote:
>
>> You can't declare variables inside a multiple return, you'll have to
>> declare them first, then assign them in a separate statement.
>>
>> - Tim
>>
>>
>> On Wed, Aug 7, 2013 at 8:03 PM, Ketan Maheshwari <
>> ketancmaheshwari at gmail.com> wrote:
>>
>>>  Hi,
>>>
>>> I am writing some benchmark scripts. One of them is SIMO for single
>>> input multiple output for which an app looks as follows:
>>>
>>> app (file _outB1, file _outB2, file _outB3, file _outB4) A (file _inA1){
>>>     "simo.sh" @_inA1 @_outB1 @_outB2 @_outB3 @_outB4;
>>> }
>>>
>>> Wondering if this is the right way to define multiple outputs to an app?
>>>
>>> I am getting error message when I call the app in main{} as follows:
>>>
>>> (file outb1 <outb1>, file outb2 <outb2>, file outb3 <outb3>, file outb4
>>> <outb4>) = A (in_a);
>>>
>>> The error is:
>>>
>>> simo.swift l.22:9 mismatched input 'outb1' expecting RPAREN
>>> simo.swift l.22:49 no viable alternative at input 'outb3'
>>> simo.swift l.22:82 no viable alternative at input ')'
>>> simo.swift l.22:86 mismatched input 'A' expecting GT
>>> simo.swift l.24:0 mismatched input '}' expecting EOF
>>> Error occurred during parsing.
>>>
>>> Thanks for suggestions to fix this.
>>>
>>> --
>>> Ketan
>>>
>>>
>>> _______________________________________________
>>> ExM-user mailing list
>>> ExM-user at lists.mcs.anl.gov
>>> https://lists.mcs.anl.gov/mailman/listinfo/exm-user
>>>
>>>
>>
>
>
> --
> Ketan
>
>
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