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    Types: TextFile
    Names: »B«

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TextFile

separate (Generic_Rule_Base)
package body Generic_Rule_Bundle is

    function As_Natural (R : Rule_Names) return Natural is
    begin
        return Rule_Names'Pos (R) + 1;
    end As_Natural;

    function Make (R : Rule_Names) return Rule_Id is
    begin
        return Rule_Id'(Is_Valid   => True,
                        The_Bundle => The_Bundle,
                        The_Rule   => As_Natural (R));
    end Make;

    procedure Add (The_Rule : Rule_Names; Premiss : Fact.Join_Descriptor) is
    begin
        for I in The_Rules'Range loop
            if not The_Rules (I).The_Id.Is_Valid then
                The_Rules (I) := Rule'(The_Query_Count => Premiss'Length,
                                       The_Id          => Make (The_Rule),
                                       The_Premiss     => Premiss);
                Last_Rule     := I;
                return;
            end if;
        end loop;
        raise Overflow;
    end Add;

    procedure Do_Action (For_Rule : Rule_Id; On_Facts : Fact.Collection) is
    begin
        if For_Rule.The_Bundle = The_Bundle then
            case For_Rule.The_Rule is
                when 1 =>
                    Action_1 (On_Facts);
                when 2 =>
                    Action_2 (On_Facts);
                when 3 =>
                    Action_3 (On_Facts);
                when 4 =>
                    Action_4 (On_Facts);
                when 5 =>
                    Action_5 (On_Facts);
                when others =>
                    Null_Action (On_Facts);
            end case;
        else
            raise Illegal_Bundle;
        end if;
    end Do_Action;

begin
    if Rule_1 /= Nothing then
        Add (Rule_1, Premiss_1);
    end if;
    if Rule_2 /= Nothing then
        Add (Rule_2, Premiss_2);
    end if;
    if Rule_3 /= Nothing then
        Add (Rule_3, Premiss_3);
    end if;
    if Rule_4 /= Nothing then
        Add (Rule_4, Premiss_4);
    end if;
    if Rule_5 /= Nothing then
        Add (Rule_5, Premiss_5);
    end if;
end Generic_Rule_Bundle;