DataMuseum.dk Presents historical artifacts from the history of: Rational R1000/400

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⟦427192df8⟧ Ada Source

    Length: 7168 (0x1c00)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Box, seg_00e367

Derivation

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

with Expertsystem;
use Expertsystem;

package body Box is

    type Box_Structure is
        record
            Size  : Natural;
            State : States;
        end record;


    package Behavior is new Classbehavior (Box_Structure, "BOXES     ");


------------------------------------------------------------------------------
    function Size (O : Object) return Natural is
    begin
        return Behavior.Get (O).Size;
    end Size;

    function State (O : Object) return States is
    begin
        return Behavior.Get (O).State;
    end State;

------------------------------------------------------------------------------
    function Instances (Kind : Existences := Empty_Boxes)
                       return Collection.Object is
        function Empty_Predicate (O : Object) return Boolean is
        begin
            return Behavior.Get (O).State = Is_Empty;
        end Empty_Predicate;
        function Empty is new CollectionRestrict (Empty_Predicate);
    begin
        case Kind is
            when All_Boxes =>
                return Behavior.Instances;  
            when Empty_Boxes =>
                return Empty (Behavior.Instances);
            when others =>
                return Behavior.Instances;
        end case;
    end Instances;

------------------------------------------------------------------------------
    function Exist (With_State : States; In_Kind_Of_Collection : Existences)
                   return Boolean is
        function Is_State (O : Object) return Boolean is
        begin
            return Behavior.Get (O).State = With_State;
        end Is_State;  
        function Exist_State is new Collection.Exist (Is_State);
    begin
        return Exist_State (Instances (Kind => In_Kind_Of_Collection));
    end Exist;

    function Exist (Greater_Than : Natural; In_Kind_Of_Collection : Existences)
                   return Boolean is
        function Is_Greater_Than (O : Object) return Boolean is
        begin
            return Behavior.Get (O).Size > Greater_Than;
        end Is_Greater_Than;  
        function Exist_Greater is new Collection.Exist (Is_Greater_Than);
    begin
        return Exist_Greater (Instances (Kind => In_Kind_Of_Collection));
    end Exist;

    function Exist (Between               : Natural;
                    And_Size              : Natural;
                    In_Kind_Of_Collection : Existences) return Boolean is
        function Is_Between (O : Object) return Boolean is
        begin
            return Behavior.Get (O).Size > Between and
                      Behavior.Get (O).Size < And_Size;
        end Is_Between;  
        function Exist_Between is new Collection.Exist (Is_Between);
    begin
        return Exist_Between (Instances (Kind => In_Kind_Of_Collection));
    end Exist;

------------------------------------------------------------------------------
    function Add (With_Size  : Natural := Default_Size;
                  With_State : States  := Default_State) return Object is
        A_Box : Box_Structure;
    begin
        A_Box.Size  := With_Size;
        A_Box.State := With_State;
        return Behavior.Allocate (Initvalue => A_Box);
    end Add;

------------------------------------------------------------------------------
    procedure Change (O : Object; With_Size : Natural; With_State : States) is
        A_Box : Box_Structure;
    begin
        A_Box       := Behavior.Get (Aref => O);
        A_Box.Size  := With_Size;
        A_Box.State := With_State;
        Behavior.Set (Aref => O, Withvalue => A_Box);
    end Change;

    procedure Change (O : Object; With_State : States) is
        A_Box : Box_Structure;
    begin
        A_Box       := Behavior.Get (Aref => O);
        A_Box.State := With_State;
        Behavior.Set (Aref => O, Withvalue => A_Box);
    end Change;

------------------------------------------------------------------------------
    procedure Delete (O : Object) is
    begin
        Behavior.Dispose (Aref => O);
    end Delete;

------------------------------------------------------------------------------
    procedure Clean is
    begin
        Behavior.Clear;
    end Clean;


end Box;

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    nid=0
    hdr6=c
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        [0x01] rec0=00 rec1=00 rec2=06 rec3=002
        [0x02] rec0=1a rec1=00 rec2=02 rec3=020
        [0x03] rec0=17 rec1=00 rec2=03 rec3=012
        [0x04] rec0=1b rec1=00 rec2=04 rec3=02a
        [0x05] rec0=0e rec1=00 rec2=05 rec3=000
    tail 0x2170afefa821d7d61e0aa 0x42a00088462063c03