Issue with String arrays and iterators in NF

[Francesco Casella]

Please check the model ​ScalableTestSuite.Electrical.BreakerCircuits.ScaledExperiments.BreakerNetwork_N_10_M_10. The compilation with the NF fails in the CodeGen phase, but the root cause is in the NF, as demonstrated by this simple test case, which fails with the same error message:

package Test
  model M
    parameter String name;
  end M;
 
  model P
    parameter Integer N = 2;
    M m[N](name={String(i) for i in 1:N});
  end P;
end Test;

Flattening model Test.P with the old FE gives

class Test.P
  parameter Integer N = 2;
  parameter String m[1].name = "1";
  parameter String m[2].name = "2";
end Test.P;

while the new FE gives

class Test.P
  parameter Integer N = 2;
  parameter String m[1].name = array(String(i, 0, true) for i in 1:2)[1];
  parameter String m[2].name = array(String(i, 0, true) for i in 1:2)[2];
end Test.P;

Is this because of the still missing function evaluation feature?

[Per Östlund]

Replying to casella:

Is this because of the still missing function evaluation feature?

No, that's only for userdefined functions, which neither array nor String is. This is just due to missing evaluation of reductions and some of the builtin functions (like String).