DataMuseum.dk

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    Length: 2531 (0x9e3)
    Types: TextFile
    Names: »B«

└─⟦a7d1ea751⟧ Bits:30000550 8mm tape, Rational 1000, !users!projects 94_04_11
    └─ ⟦129cab021⟧ »DATA« 
        └─⟦this⟧ 

TextFile

with Oo_Ada_Exception;
with Text_Io;  
with Unchecked_Conversion;
with Unchecked_Deallocation;

package body Foot is

    type State is
        record
            Length : Positive;
            Offspring_No : Natural := 0;
            Heir : Application.Object;
        end record;

    procedure Free is new Unchecked_Deallocation (State, State_Ptr);

    function Foot_View_Of is
       new Unchecked_Conversion
              (Source => Application.Object, Target => State_Ptr);


    function Application_View_Of is
       new Unchecked_Conversion (Source => State_Ptr,
                                 Target => Application.Object);


    function Create (Offspring_No : Natural := 0) return Object is
        This_Application : Application.Object;
        This_State_Ptr : State_Ptr;
    begin
        This_State_Ptr := new State;
        This_State_Ptr.Offspring_No := Offspring_No;
        This_Application := Application.Create (1);
        Application.Set_Heir (This_Application,
                              Application_View_Of (This_State_Ptr));
        return Object (This_Application);
    end Create;

    procedure Delete (This_Foot : in out Object;
                      Marker : Boolean := False) is separate;


    procedure Set_Length (This_Foot : in out Object; Cm : Positive) is
    begin
        Part_Of (This_Foot).Length := Cm;
    end Set_Length;


    function Get_Length (This_Foot : Object) return Positive is
    begin
        return Part_Of (This_Foot).Length;
    end Get_Length;


    procedure Image (This_Foot : Object) is
    begin
        Text_Io.Put_Line ("Foot is:");
        Text_Io.Put_Line ("   longueur: " &
                          Positive'Image (Part_Of (This_Foot).Length));  
    end Image;


    function Part_Of (This_Foot : Object) return State_Ptr is  
        This_State_Ptr : State_Ptr;
    begin  
        This_State_Ptr := Foot_View_Of
                             (S => Application.Get_Heir
                                      (Application.Object (This_Foot)));
        if This_State_Ptr = null then
            raise Oo_Ada_Exception.Part_Of_Error;
        else
            return This_State_Ptr;
        end if;
    end Part_Of;


    procedure Set_Heir (This_State_Ptr : in out State_Ptr;
                        Heir : Application.Object) is
    begin
        This_State_Ptr.Heir := Heir;
    end Set_Heir;


    function Get_Heir (This_State_Ptr : State_Ptr) return Application.Object is
    begin
        return This_State_Ptr.Heir;
    end Get_Heir;


end Foot;