public override Value Evaluate()
{
Reject(Regions.FieldExists(fieldName), LOCATION, $"Field {fieldName} is already defined");
Regions.CreateReadOnlyVariable(fieldName);
Regions[fieldName] = thunk;
result = thunk.ToString();
return(null);
}
public override Value Evaluate()
{
Regions.FieldExists(fieldName).Must().Not.BeTrue().OrThrow(LOCATION, () => $"Field {fieldName} is already defined");
Regions.CreateReadOnlyVariable(fieldName);
Regions[fieldName] = thunk;
result = thunk.ToString();
return(null);
}