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-- C854001.A

--

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making

--     this public release, the Government intends to confer upon all

--     recipients unlimited rights  equal to those held by the Government.

--     These rights include rights to use, duplicate, release or disclose the

--     released technical data and computer software in whole or in part, in

--     any manner and for any purpose whatsoever, and to have or permit others

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

--

-- OBJECTIVE:

--      Check that a subprogram declaration can be completed by a

--      subprogram renaming declaration. In particular, check that such a

--      renaming-as-body can be given in a package body to complete a

--      subprogram declared in the package specification. Check that calls

--      to the subprogram invoke the body of the renamed subprogram.  Check

--      that a renaming allows a copy of an inherited or predefined subprogram

--      before overriding it later.  Check that renaming a dispatching

--      operation calls the correct body in case of overriding.

--

-- TEST DESCRIPTION:

--      This test declares a record type, an integer type, and a tagged type

--      with a set of operations in a package. A renaming of a predefined

--      equality operation of a tagged type is also defined in this package.

--      The predefined operation is overridden in the private part. In a

--      separate package, a subtype of the record type and integer type

--      are declared.  Subset of the full set of operations for the record

--      and types is reexported using renamings-as-bodies. Other operations

--      are given explicit bodies.  The test verifies that the appropriate

--      body is executed for each operation on the subtype.

--

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--      07 Nov 95   SAIC    Update and repair for ACVC 2.0.1

--

--!

package C854001_0 is

   type Component is (Op_Of_Type, Op_Of_Subtype, Initial_Value);

   type Root is record

      Called : Component := Op_Of_Subtype;

   end record;

   procedure Root_Proc (P: in out Root);

   procedure Over_Proc (P: in out Root);

   function Root_Func return Root;

   function Over_Func return Root;

   type Short_Int is range 1 .. 98;

   function "+" (P1, P2 : Short_Int) return Short_Int;

   function Name (P1, P2 : Short_Int) return Short_Int;

   type Tag_Type is tagged record

      C : Component := Initial_Value;

   end record;

   -- Inherits predefined operator "=" and others.

   function Predefined_Equal (P1, P2 : Tag_Type) return Boolean

     renames "=";

   -- Renames predefined operator "=" before overriding.

private

   function "=" (P1, P2 : Tag_Type)

     return Boolean;                   -- Overrides predefined operator "=".

end C854001_0;

     --==================================================================--

package body C854001_0 is

   procedure Root_Proc (P: in out Root) is

   begin

      P.Called := Initial_Value;

   end Root_Proc;

   ---------------------------------------

   procedure Over_Proc (P: in out Root) is

   begin

      P.Called := Op_Of_Type;

   end Over_Proc;

   ---------------------------------------

   function Root_Func return Root is

   begin

      return (Called => Op_Of_Type);

   end Root_Func;

   ---------------------------------------

   function Over_Func return Root is

   begin

      return (Called => Initial_Value);

   end Over_Func;

   ---------------------------------------

   function "+" (P1, P2 : Short_Int) return Short_Int is

   begin

      return 15;

   end "+";

   ---------------------------------------

   function Name (P1, P2 : Short_Int) return Short_Int is

   begin

      return 47;

   end Name;

   ---------------------------------------

   function "=" (P1, P2 : Tag_Type) return Boolean is

   begin

      return False;

   end "=";

end C854001_0;

     --==================================================================--

with C854001_0;

package C854001_1 is

   subtype Root_Subtype is C854001_0.Root;

   subtype Short_Int_Subtype is C854001_0.Short_Int;

   procedure Ren_Proc  (P: in out Root_Subtype);

   procedure Same_Proc (P: in out Root_Subtype);

   function Ren_Func  return Root_Subtype;

   function Same_Func return Root_Subtype;

   function Other_Name (P1, P2 : Short_Int_Subtype) return Short_Int_Subtype;

   function "-" (P1, P2 : Short_Int_Subtype) return Short_Int_Subtype;

   function User_Defined_Equal (P1, P2 : C854001_0.Tag_Type) return Boolean

     renames C854001_0."=";                       -- Executes body of the

                                                  -- overriding declaration in

                                                  -- the private part.

end C854001_1;

     --==================================================================--

with C854001_0;

package body C854001_1 is

   --

   -- Renaming-as-body for procedure:

   --

   procedure Ren_Proc  (P: in out Root_Subtype)

     renames C854001_0.Root_Proc;

   procedure Same_Proc (P: in out Root_Subtype)

     renames C854001_0.Over_Proc;

   --

   -- Renaming-as-body for function:

   --

   function Ren_Func  return Root_Subtype renames C854001_0.Root_Func;

   function Same_Func return Root_Subtype renames C854001_0.Over_Func;

   function Other_Name (P1, P2 : Short_Int_Subtype) return Short_Int_Subtype

     renames C854001_0."+";

   function "-" (P1, P2 : Short_Int_Subtype) return Short_Int_Subtype

     renames C854001_0.Name;

end C854001_1;

     --==================================================================--

with C854001_0;

with C854001_1;  -- Subtype and associated operations.

use  C854001_1;

with Report;

procedure C854001 is

   Operand1  : Root_Subtype;

   Operand2  : Root_Subtype;

   Operand3  : Root_Subtype;

   Operand4  : Root_Subtype;

   Operand5  : Short_Int_Subtype := 55;

   Operand6  : Short_Int_Subtype := 46;

   Operand7  : Short_Int_Subtype;

   Operand8  : C854001_0.Tag_Type;         -- Both Operand8 & Operand9 have

   Operand9  : C854001_0.Tag_Type;         -- the same default values.

   -- Direct visibility to operator symbols

   use type C854001_0.Component;

   use type C854001_0.Short_Int;

begin

   Report.Test ("C854001", "Check that a renaming-as-body can be given " &

                           "in a package body to complete a subprogram " &

                           "declared in the package specification. "     &

                           "Check that calls to the subprogram invoke "  &

                           "the body of the renamed subprogram");

   --

   -- Only operations of the subtype are available.

   --

   Ren_Proc  (Operand1);

   if Operand1.Called /= C854001_0.Initial_Value then

      Report.Failed ("Error calling procedure Ren_Proc");

   end if;

   ---------------------------------------

   Same_Proc (Operand2);

   if Operand2.Called /= C854001_0.Op_Of_Type then

      Report.Failed ("Error calling procedure Same_Proc");

   end if;

   ---------------------------------------

   Operand3 := Ren_Func;

   if Operand3.Called /= C854001_0.Op_Of_Type then

      Report.Failed ("Error calling function Ren_Func");

   end if;

   ---------------------------------------

   Operand4 := Same_Func;

   if Operand4.Called /= C854001_0.Initial_Value then

      Report.Failed ("Error calling function Same_Func");

   end if;

   ---------------------------------------

   Operand7 := C854001_1."-" (Operand5, Operand6);

   if Operand7 /= 47 then

      Report.Failed ("Error calling function & ""-""");

   end if;

   ---------------------------------------

   Operand7 := Other_Name (Operand5, Operand6);

   if Operand7 /= 15 then

      Report.Failed ("Error calling function Other_Name");

   end if;

   ---------------------------------------

   -- Executes body of the overriding declaration in the private part

   -- of C854001_0.

   if User_Defined_Equal (Operand8, Operand9) then

      Report.Failed ("Error calling function User_Defined_Equal");

   end if;

   ---------------------------------------

   -- Executes predefined operation.

   if not C854001_0.Predefined_Equal (Operand8, Operand9) then

      Report.Failed ("Error calling function Predefined_Equal");

   end if;

   Report.Result;

end C854001;