Frontend eats input / output qualifiers

[Rüdiger Franke]

See the following example:

package HierarchicalConnector
  connector IO
    input Real u;
    output Real y;
  end IO;

  model Test
    IO io;
  equation
    io.y = 2*io.u;
  end Test;

  model Test2
    IO[1] io;
  equation
    io.y = 2*io.u;
  end Test2;
end HierarchicalConnector;

The frontend generates for HierarchicalConnector.Test the correct flat model:

class Test
  input Real io.u;
  output Real io.y;
equation
  io.y = 2.0 * io.u;
end Test;

For HierarchicalConnector.Test2 it generates:

class Test2
  Real io[1].u;
  Real io[1].y;
equation
  io[1].y = io[1].u * 2.0;
end Test2;

The translation fails with:

Too few equations, under-determined system. The model has 1 equation(s) and 2 variable(s).

This is critical for FMI export.

[Adrian Pop]

This seems to be an scalar vs array issue.

[Martin Sjölund]

I'm not totally sure model Test generates the expected results. We only keep input/output on the top-level class, right? If you use model IO, you get the expected results from how the front-end was designed (which is what @rfranke thinks is the wrong result).

[Adrian Pop]

IO is a connector so I think is correct what we generate for Test and it should be the same for Test2.

[Rüdiger Franke]

9d2b906/OMCompiler shall fix this. I'm adding a test too.

[Adrian Pop]

I had this fix also but had to go on a car trip for 7 hours and you fixed it in the meantime :)

[Rüdiger Franke]

Never mind. There are many more open tickets :-)

[Martin Sjölund]

Milestone deleted