expanding array equation in when clauses

[Willi Braun]

The following does not work, while the comment stuff does:

function f
  input Real[:] a;
  output Real[size(a,1)] b;
algorithm
  for i in 1:size(a,1) loop
    b[i] := a[i] + 1;
  end for;
end f;
model ArrayWhenFunction
parameter Real a[3]={3,1,2};
//parameter Real a1[3]={3,1,2};
//parameter Real b[3]={1,1,1};
Real res[3];
Real x(start =1);
equation
  der(x) = x;
  when time > 0.5 then 
    res = f(a);
    //res = a1+b;
  end when;  
end ArrayWhenFunction;

All array's are expand, beside the lhs in a when clause.
I'm not sure has this to be done in while the instantiation or in the Backend while create the BackendDAE structure.
My guess is while the instantiation, because all other expression are also expanded there:

$ omc ../Modelica/FunctionWhen.mo
function f
  input Real[:] a;
  output Real[size(a,1)] b;
algorithm
  for i in 1:size(a,1) loop
    b[i] := 3.0 + a[i];
  end for;
end f;
class ArrayWhenFunction
  parameter Real a[1] = 3.0;
  parameter Real a[2] = 1.0;
  parameter Real a[3] = 2.0;
  Real res[1];
  Real res[2];
  Real res[3];
  Real x(start = 1.0);
equation
  der(x) = x;
  when time > 0.5 then
  res = f({a[1],a[2],a[3]});
  end when;
end ArrayWhenFunction;

[Martin Sjölund]

This is just a problem with the equation count, right?

[Willi Braun]

yes, it seems so.

[Martin Sjölund]

This now fails code generation (pre(array)?)

[Willi Braun]

Now it works, although only with numerical initialization.

Notification: The given system is mixed-determined.   [index > 0]
Notification: The given system is mixed-determined.   [index > 1]
Notification: The given system is mixed-determined.   [index > 2]
Notification: The given system is mixed-determined.   [index > 3]
Warning: No system for the symbolic initialization was generated. A method using numerical algorithms will be used instead.

[Lennart Ochel]

This got fixed in the meantime.