Modelica.Media issues with code generation.

[adrpo]

Francesco C. made a small test for Media (attached).
TestMedia.TestModels.TestWater, TestMedia.TestModels.TestSteam have issues in the code generation.

[wbraun]

Actually, the issue is to support records in the Backend.
For example in "TestMedia.TestModels.TestWater" we inline a function parameter to one record expression.

record R1
 Real a;
end R1;

function foo
 input R1 in;
 output R1 out;
algorithm
  out.a := in.a;
end foo;

class A
 parameter R1 r1(a=3.0);
  R1 r2;
equation
  r2 = foo(r1);
end A;

results in

class A
 parameter Real r1.a = 3.0;
 Real r2.a;
equation
 r2.a = in.a;
end A;

Of course "in.a" is here not available in the global scope and that results into the code generation error.

As far as I can see, one easy way to support records in expressions like "rec = f(...)",
is to handle them exactly like tuple-function calls "(out1,out2) = func(...)".
Those are just transformed to algorithms for the Backend issues, this should be easier to
implement than handle them as array equations.

[sjoelund.se]

Well, the inlining should of course take care to replace in.a with r1.a ... Just like it would change in to r1 if it was an Integer...

[Frenkel TUD]

solved in revision 11285