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1 294 jeremybenn
-- C393012.A
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--
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--                             Grant of Unlimited Rights
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--
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--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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--     unlimited rights in the software and documentation contained herein.
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--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
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--     this public release, the Government intends to confer upon all
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--     recipients unlimited rights  equal to those held by the Government.
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--     These rights include rights to use, duplicate, release or disclose the
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--     released technical data and computer software in whole or in part, in
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--     any manner and for any purpose whatsoever, and to have or permit others
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--     to do so.
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--
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--                                    DISCLAIMER
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--
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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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--     PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- OBJECTIVE:
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--     Check that a non-abstract subprogram of an abstract type can be
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--     called with a controlling operand that is a type conversion to
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--     the abstract type.
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--
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--     Check that converting to the class-wide type of an abstract type
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--     inside an operation of that type causes a "redispatch" of the
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--     called operation.
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--
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-- TEST DESCRIPTION:
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--     This test defines an abstract type, and further derives types from it.
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--     The key feature of this test is in the "Display" procedures where
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--     the bodies of these procedures convert an object to the class-wide
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--     type of the root abstract type, causing a "redispatch".
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--
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--
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-- CHANGE HISTORY:
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--      06 Dec 94   SAIC    ACVC 2.0
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--      16 Dec 94   SAIC    Add allocation to the object initializations
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--
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--!
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package C393012_0 is
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  subtype Row_Number  is Positive  range 1..120;
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  subtype Seat_Letter is Character range 'A'..'M';
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  type Ticket is abstract tagged
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    record
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      Flight : Natural;
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      Row    : Row_Number;
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      Seat   : Seat_Letter;
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    end record;
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   function Display( T: Ticket ) return String;
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   function Service( T: Ticket ) return String is abstract;
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end C393012_0;
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with TCTouch;
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package body C393012_0 is
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   function Display( T: Ticket ) return String is
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  begin
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    TCTouch.Touch('T');  --------------------------------------------------- T
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    return "Fl:" & Natural'Image(T.Flight)
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         & Service( Ticket'Class( T ) )
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         & " Seat:" & Row_Number'Image(T.Row) & T.Seat;
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  end Display;
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end C393012_0;
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with C393012_0;
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package C393012_1 is
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  type Economy is new C393012_0.Ticket with null record;
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  function Display( T: Economy ) return String;
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  function Service( T: Economy ) return String;
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  type Meal_Designator is ( B, L, D, V, SN );
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  type First is new C393012_0.Ticket with
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    record
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      Meal : Meal_Designator;
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    end record;
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  function Display( T: First ) return String;
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  function Service( T: First ) return String;
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  procedure Set_Meal( T: in out First; To_Meal : Meal_Designator );
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end C393012_1;
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with TCTouch;
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package body C393012_1 is
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  function Display( T: Economy ) return String is
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  begin
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    TCTouch.Touch('E');  --------------------------------------------------- E
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    return C393012_0.Display( C393012_0.Ticket( T ) );
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  end Display;                -- conversion to abstract type
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  function Service( T: Economy ) return String is
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  begin
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    TCTouch.Touch('e');  --------------------------------------------------- e
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    return " K";
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  end Service;
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  function Display( T: First ) return String is
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  begin
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    TCTouch.Touch('F');  --------------------------------------------------- F
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    return C393012_0.Display( C393012_0.Ticket( T ) );
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  end Display;                -- conversion to abstract type
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  function Service( T: First ) return String is
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  begin
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    TCTouch.Touch('f');  --------------------------------------------------- f
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    return " F" & Meal_Designator'Image(T.Meal);
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  end Service;
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  procedure Set_Meal( T: in out First; To_Meal : Meal_Designator ) is
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  begin
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    T.Meal := To_Meal;
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  end Set_Meal;
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end C393012_1;
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with Report;
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with TCTouch;
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with C393012_0;
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with C393012_1;
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procedure C393012 is
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  package Rt renames C393012_0;
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  package Tx renames C393012_1;
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  type Tix is access Rt.Ticket'Class;
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  type Itinerary is array(Positive range 1..3) of Tix;
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-- Outbound and Inbound itineraries provide different orderings of mixtures
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-- of Economy and First_Class.  Not that that should make any difference...
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  Outbound : Itinerary := ( 1 => new Tx.Economy'( 5335,  5, 'B' ),
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                            2 => new Tx.First'  (   67,  1, 'J', Tx.L ),
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                            3 => new Tx.Economy'(  345, 37, 'C' ) );
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  Inbound  : Itinerary := ( 1 => new Tx.First'  (  456,  4, 'F', Tx.SN ),
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                            2 => new Tx.Economy'(   68, 12, 'D' ),
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                            3 => new Tx.Economy'( 5336,  6, 'A' ) );
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-- Each call to Display uses a parameter that is a type conversion
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-- to the abstract type Ticket.
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  procedure TC_Convert( I: Itinerary; Leg1,Leg2,Leg3: String ) is
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  begin
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    if Rt.Display( Rt.Ticket( I(1).all ) ) /= Leg1 then
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      Report.Failed( Rt.Display( Rt.Ticket( I(1).all ) ) & " /= " & Leg1 );
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    end if;
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    if Rt.Display( Rt.Ticket( I(2).all ) ) /= Leg2 then
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      Report.Failed( Rt.Display( Rt.Ticket( I(2).all ) ) & " /= " & Leg2 );
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    end if;
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    if Rt.Display( Rt.Ticket( I(3).all ) ) /= Leg3 then
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      Report.Failed( Rt.Display( Rt.Ticket( I(3).all ) ) & " /= " & Leg3 );
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    end if;
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  end TC_Convert;
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-- Each call to Display uses a parameter that is not a type conversion
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  procedure TC_Match( I: Itinerary; Leg1,Leg2,Leg3: String ) is
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  begin
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    if Rt.Display( I(1).all ) /= Leg1 then
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      Report.Failed( Rt.Display( I(1).all ) & " /= " & Leg1 );
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    end if;
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    if Rt.Display( I(2).all ) /= Leg2 then
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      Report.Failed( Rt.Display( I(2).all ) & " /= " & Leg2 );
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    end if;
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    if Rt.Display( I(3).all ) /= Leg3 then
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      Report.Failed( Rt.Display( I(3).all ) & " /= " & Leg3 );
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    end if;
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  end TC_Match;
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begin  -- Main test procedure.
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   Report.Test ("C393012", "Check that a non-abstract subprogram of an "
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                         & "abstract type can be called with a "
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                         & "controlling operand that is a type "
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                         & "conversion to the abstract type.  "
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                         & "Check that converting to the class-wide type "
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                         & "of an abstract type inside an operation of "
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                         & "that type causes a redispatch" );
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  -- Test conversions to abstract type
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   TC_Convert( Outbound, "Fl: 5335 K Seat: 5B",
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                         "Fl: 67 FL Seat: 1J",
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                         "Fl: 345 K Seat: 37C" );
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   TCTouch.Validate( "TeTfTe", "Outbound flight (converted)" );
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   TC_Convert( Inbound, "Fl: 456 FSN Seat: 4F",
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                        "Fl: 68 K Seat: 12D",
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                        "Fl: 5336 K Seat: 6A" );
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   TCTouch.Validate( "TfTeTe", "Inbound flight (converted)" );
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  -- Test without conversions to abstract type
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   TC_Match( Outbound, "Fl: 5335 K Seat: 5B",
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                       "Fl: 67 FL Seat: 1J",
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                       "Fl: 345 K Seat: 37C" );
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   TCTouch.Validate( "ETeFTfETe", "Outbound flight" );
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   TC_Match( Inbound, "Fl: 456 FSN Seat: 4F",
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                       "Fl: 68 K Seat: 12D",
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                       "Fl: 5336 K Seat: 6A" );
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   TCTouch.Validate( "FTfETeETe", "Inbound flight" );
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   Report.Result;
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end C393012;

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