Problem with extends - unverified

[kajny]

From the file BUGGAR in modeq:
---
Problem with env when using "extends":

domain Domain2D

space Real x,y;

end Domain2D;

model PDECoeff2

Real u(spacedim=2);
parameter Real da=0;
parameter Real c=0;
parameter Real alfa=0;
parameter Real gamma=0;
parameter Real a=0;
parameter Real beta=0;
parameter Real f=0;
Domain2D defdom;

end PDECoeff2;

model GenNeumann

extends PDECoeff2;
parameter Real n=1;
parameter Real q=0;
parameter Real g=0;

end GenNeumann;

model HeatTransfer

extends PDECoeff2;

equation

da=1;
c=1;
alfa=0;
gamma=0;
a=0;
beta=0;
f=0;

end HeatTransfer;

model HeatNeumann

extends GenNeumann;
parameter Real k=1;
parameter Real qh=0;
parameter Real hh=1;
parameter Real Tinf=25;

equation

c=k;
alfa=0;
gamma=0;
q=hh;
g=qh + hh*Tinf;

end HeatNeumann;

function MyFunc

constant Real PI=3.14159265358979;
parameter Real x0=0, y0=0, ra=1, rb=1;
input Real u;
output Real x,y;

algorithm

x := x0 + ra*sin(u*PI*2);
y := y0 + rb*cos(u*PI*2);

end MyFunc;

domain Line2D

space Real x,y;

extends Domain2D;

parameter Real x0=0, y0=0, x1=1, y1=1;
PDECoeff2 eq;

end Line2D;

domain Rectangular

space Real x,y;

extends Domain2D;

space Real u;
PDECoeff2 eq;
parameter Real x0=0, y0=0, x1=1, y1=1;
Line2D left(x0=x0, y0=y0, x1=x0, y1=y1);
Line2D top(x0=x0, y0=y1, x1=x1, y1=y1);
Line2D right(x0=x1, y0=y1, x1=x1 ,y1=y0);
Line2D bottom(x0=x1, y0=y0, x1=x0, y1=y0);

end Rectangular;

model PDEModel

parameter Real u_init(spacedim=2)=55;
HeatNeumann h_iso;
HeatNeumann h_glass(qh=1.5);
HeatTransfer pde(u(start=u_init));
Rectangular rect;

end PDEModel;

The commented extends lines causes:

# unknown class 'PDECoeff2' while instantiating rect.eq
# unknown class 'Line2D' while instantiating rect.left
# unknown class 'Line2D' while instantiating rect.top
# unknown class 'Line2D' while instantiating rect.right
# unknown class 'Line2D' while instantiating rect.bottom
---

[levsa]

Not relevant anymore. The old pdemodeq approach used this syntax. The extends
bug is fixed in the current implementation.