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⟦77640050a⟧ Ada Source

    Length: 9216 (0x2400)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Rule_Instance, seg_04a32c, seg_04a9ef, seg_04b45d, separate Generic_Rule_Base

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─ ⟦cfc2e13cd⟧ »Space Info Vol 2« 
        └─⟦this⟧ 

separate (Generic_Rule_Base)
package body Rule_Instance is

    procedure Swap (The_Facts : in out Fact_Collection; Index : Positive) is
        Tmp_Fact : Fact_Name;
    begin
        Tmp_Fact              := The_Facts (Index);
        The_Facts (Index)     := The_Facts (Index + 1);
        The_Facts (Index + 1) := Tmp_Fact;
    end Swap;


    function Sort (The_Facts : Fact_Collection) return Fact_Collection is
        Result : Fact_Collection (1 .. The_Facts'Length) := The_Facts;

        use Recency;
    begin
        for I in Result'First .. (Result'Last - 1) loop
            for J in Result'First .. (Result'Last - I) loop
                if Get_Date (Result (J)) < Get_Date (Result (J + 1)) then
                    Swap (Result, J);
                end if;
            end loop;
        end loop;
        return Result;
    end Sort;


    function Is_Earlier (Left, Right : Fact_Collection) return Boolean is
        Max_Index    : Positive;
        Sorted_Left  : Fact_Collection (1 .. Left'Length);
        Sorted_Right : Fact_Collection (1 .. Right'Length);

        use Recency;
    begin
        if Left'Length > Right'Length then
            Max_Index := Right'Length;
        else
            Max_Index := Left'Length;
        end if;
        Sorted_Left  := Sort (Left);
        Sorted_Right := Sort (Right);
        for I in 1 .. Max_Index loop
            if Get_Date (Sorted_Left (I)) < Get_Date (Sorted_Right (I)) then
                return True;
            elsif Get_Date (Sorted_Left (I)) > Get_Date (Sorted_Right (I)) then
                return False;
            else
                null;
            end if;
        end loop;
        return Left'Length < Right'Length;
    end Is_Earlier;


    function Is_Later (Left, Right : Fact_Collection) return Boolean is
        Max_Index    : Positive;
        Sorted_Left  : Fact_Collection (1 .. Left'Length);
        Sorted_Right : Fact_Collection (1 .. Right'Length);

        use Recency;
    begin
        if Left'Length > Right'Length then
            Max_Index := Right'Length;
        else
            Max_Index := Left'Length;
        end if;
        Sorted_Left  := Sort (Left);
        Sorted_Right := Sort (Right);
        for I in 1 .. Max_Index loop
            if Get_Date (Sorted_Left (I)) < Get_Date (Sorted_Right (I)) then
                return False;
            elsif Get_Date (Sorted_Left (I)) > Get_Date (Sorted_Right (I)) then
                return True;
            else
                null;
            end if;
        end loop;
        return Left'Length > Right'Length;
    end Is_Later;


    function "<" (Left, Right : Object) return Boolean is
        Left_Facts  : constant Fact_Collection := Get_Facts (Left);
        Right_Facts : constant Fact_Collection := Get_Facts (Right);

        use Recency;
    begin
        return Is_Earlier (Left_Facts, Right_Facts)

                   or else

                  (not Is_Later (Left_Facts, Right_Facts) and then

                   ((The_Rules (Left.The_Rule).The_Date >
                     The_Rules (Right.The_Rule).The_Date)

                     or else

                    ((The_Rules (Left.The_Rule).The_Date =
                      The_Rules (Right.The_Rule).The_Date) and then
                     (Left.Size < Right.Size))));
    end "<";


    function Make (The_Rule_Id : Rule_Id; The_Fact_Collection : Fact_Collection)
                  return Object is  
        The_Size : Natural := The_Fact_Collection'Last -
                                 The_Fact_Collection'First + 1;
    begin  
        return (Premiss_Size (The_Size), Rule_Id (The_Rule_Id),
                Fact_Collection (The_Fact_Collection));
    end Make;


    function Get_Rule (From : Object) return Rule_Id is
    begin
        return From.The_Rule;
    end Get_Rule;


    function Get_Facts (From : Object) return Fact_Collection is
    begin
        return From.The_Facts;
    end Get_Facts;


    procedure Put (The_Instance : Object; Where : Output_Stream.Object) is
        use Output_Stream;
    begin
        Put_Line ("Rule_instance'(", Where);

        Indent_Right (Where);
        Put ("The_Rule =>", Where);

        Put (The_Instance.The_Rule, Where);
        Put_Line (',', Where);

        Put_Line ("The_facts =>", Where);

        Indent_Right (Where);
        Fact_Put (The_Instance.The_Facts (1 .. The_Instance.Size), Where);
        Indent_Left (Where);

        Indent_Left (Where);
        Put_Line (")", Where);
    end Put;
end Rule_Instance;

    nblk1=8
    nid=0
    hdr6=10
        [0x00] rec0=1f rec1=00 rec2=01 rec3=03c
        [0x01] rec0=01 rec1=00 rec2=08 rec3=01e
        [0x02] rec0=1c rec1=00 rec2=02 rec3=054
        [0x03] rec0=00 rec1=00 rec2=07 rec3=00c
        [0x04] rec0=20 rec1=00 rec2=03 rec3=018
        [0x05] rec0=00 rec1=00 rec2=06 rec3=004
        [0x06] rec0=1f rec1=00 rec2=04 rec3=03e
        [0x07] rec0=1b rec1=00 rec2=05 rec3=000
    tail 0x2174ea236866e7c67ede0 0x42a00088462063c03