I am receiving a blank compilation error.

[Mostafa Shokrof]

I am trying to run this code, It can't be compiled and the status is just "Error" without any help messages.

Job: http://boa.cs.iastate.edu/boa/?q=boa/job/82449

Code: 

# Counting the number of revisions for all Java projects with SVN

p: Project = input;

majorCommitersHistogram: output sum[int] of int;

minorCommitersHistogram: output sum[int] of int;

majorCommiters : int;

minorCommiters : int;

majorThreshold : int;

numCommiters: int;

committers: map[string] of int;

numCommitsPerCommitter: array of int;

visit(p, visitor {

    before node: Revision -> {

        committers[node.author.username]++;

    }

    after node: CodeRepository -> {

        majorThreshold = int(float( len(node.revisions) )*0.05);

        

        

        #majorCommiters =0;

        #minorCommiters =0;

                

        numCommitsPerCommitter = values(committers);

        

                

        for(i:=0 ; i < len(numCommitsPerCommitter) ; i++)

        {

            if(numCommitsPerCommitter[i]>=majorThreshold)

            {

                majorCommiters++;

            }

            else

            {

                minorCommiters++;

            }

        }

                

        majorCommitersHistogram[majorCommiters] << 1;

        minorCommitersHistogram[minorCommiters] << 1;

        stop;

    }

});

Thanks in advance,

Mostafa

[Robert Dyer]

Hi Mostafa,

Would you mind filing this as a bug on GitHub?

https://github.com/boalang/compiler/issues/new

I can tell you right now, it is the line 'committers[node.author.username]++;’ and a simple work around is to change that line to this:

committers[node.author.username] = committers[node.author.username] + 1;

Apparently ‘++’ (and I assume ‘—‘) were never tested on non-basic types (maps/sets/arrays/etc).

- Robert

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________________________________________________

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BGSU | rd...@bgsu.edu | 419.372.3469 | 244 Hayes | Bowling Green, OH

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[Robert Dyer]

Actually I just realized, the fix I suggested could hit a runtime error as the first time the key isn’t in the map.  This is a better fix:

committers[node.author.username] = 1 + lookup(committers, node.author.username, 0);

Finally once we fix that error, you have another error:

- you can’t do ’stop’ in an after visitor clause - stop only works in before clauses. Just remove that line

This code works:

http://boa.cs.iastate.edu/boa/?q=boa/job/public/82553

- Robert

[Mostafa Shokrof]

Hi Robert,

Thanks for the fast reply and for solving my problem. I submitted a bug on github(https://github.com/boalang/compiler/issues/259).

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Moustafa Shokrof