/// <summary>
/// Retrieves the interpretation (the assignment) of a non-constant <paramref name="f"/> in the model.
/// </summary>
/// <param name="f">A function declaration of non-zero arity</param>
/// <returns>A FunctionInterpretation if the function has an interpretation in the model, null otherwise.</returns>
public FuncInterp FuncInterp(FuncDecl f)
{
Debug.Assert(f != null);
Context.CheckContextMatch(f);
Z3_sort_kind sk = (Z3_sort_kind)Native.Z3_get_sort_kind(Context.nCtx, Native.Z3_get_range(Context.nCtx, f.NativeObject));
if (f.Arity == 0)
{
IntPtr n = Native.Z3_model_get_const_interp(Context.nCtx, NativeObject, f.NativeObject);
if (sk == Z3_sort_kind.Z3_ARRAY_SORT)
{
if (n == IntPtr.Zero)
{
return(null);
}
else
{
if (Native.Z3_is_as_array(Context.nCtx, n) == 0)
{
throw new Z3Exception("Argument was not an array constant");
}
IntPtr fd = Native.Z3_get_as_array_func_decl(Context.nCtx, n);
using var decl = new FuncDecl(Context, fd);
return(FuncInterp(decl));
}
}
else
{
throw new Z3Exception("Constant functions do not have a function interpretation; use ConstInterp");
}
}
else
{
IntPtr n = Native.Z3_model_get_func_interp(Context.nCtx, NativeObject, f.NativeObject);
if (n == IntPtr.Zero)
{
return(null);
}
else
{
return(new FuncInterp(Context, n));
}
}
}
/// <summary>
/// Retrieves the interpretation (the assignment) of a non-constant <paramref name="f"/> in the model.
/// </summary>
/// <param name="f">A function declaration of non-zero arity</param>
/// <returns>A FunctionInterpretation if the function has an interpretation in the model, null otherwise.</returns>
public NativeFuncInterp FuncInterp(Z3_func_decl f)
{
Z3_sort_kind sk = (Z3_sort_kind)Native.Z3_get_sort_kind(ntvContext.nCtx, Native.Z3_get_range(ntvContext.nCtx, f));
if (Native.Z3_get_arity(ntvContext.nCtx, f) == 0)
{
IntPtr n = Native.Z3_model_get_const_interp(ntvContext.nCtx, NativeObject, f);
if (sk == Z3_sort_kind.Z3_ARRAY_SORT)
{
if (n == IntPtr.Zero)
{
return(null);
}
else
{
if (Native.Z3_is_as_array(ntvContext.nCtx, n) == 0)
{
throw new Z3Exception("Argument was not an array constant");
}
var fd = Native.Z3_get_as_array_func_decl(ntvContext.nCtx, n);
return(new NativeFuncInterp(ntvContext, this, f, fd));
}
}
else
{
throw new Z3Exception("Constant functions do not have a function interpretation; use ConstInterp");
}
}
else
{
IntPtr n = Native.Z3_model_get_func_interp(ntvContext.nCtx, NativeObject, f);
if (n == IntPtr.Zero)
{
return(null);
}
else
{
return(new NativeFuncInterp(ntvContext, this, f, n));
}
}
}
