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-- CB20A02.A

--

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--     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 the name and pertinent information about a user defined

--      exception are available to an enclosing program unit even when the

--      enclosing unit has no visibility into the scope where the exception

--      is declared and raised.

--

-- TEST DESCRIPTION:

--      Declare a subprogram nested within the test subprogram.  The enclosing

--      subprogram does not have visibility into the nested subprogram.

--      Declare and raise an exception in the nested subprogram, and allow

--      the exception to propagate to the enclosing scope.  Use the function

--      Exception_Name in the enclosing subprogram to produce exception

--      specific information when the exception is handled in an others

--      handler.

--

-- TEST FILES:

--

--      This test depends on the following foundation code file:

--         FB20A00.A

--

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--

--!

with FB20A00;             -- Package containing Function Find

with Ada.Exceptions;

with Report;

procedure CB20A02 is

   Seed_Number   : Integer;

   Random_Number : Integer := 0;

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

   function Random_Number_Generator (Seed : Integer) return Integer is

      Result : Integer := 0;

      HighSeedError,

      Mid_Seed_Error,

      L_o_w_S_e_e_d_E_r_r_o_r : exception;

   begin  -- Random_Number_Generator

      if (Report.Ident_Int (Seed)    > 1000) then

         raise HighSeedError;

      elsif (Report.Ident_Int (Seed) >  100) then

         raise Mid_Seed_Error;

      elsif (Report.Ident_Int (Seed) >   10) then

         raise L_o_w_S_e_e_d_E_r_r_o_r;

      else

         Seed_Number := ((Seed_Number * 417) + 231) mod 53;

         Result := Seed_Number / 52;

      end if;

      return Result;

   end Random_Number_Generator;

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

begin

   Report.Test ("CB20A02", "Check that the name "                        &

                           "of a user defined exception is available "   &

                           "to an enclosing program unit even when the " &

                           "enclosing unit has no visibility into the "  &

                           "scope where the exception is declared and "  &

                           "raised" );

   High_Seed:

   begin

      -- This seed value will result in the raising of a HighSeedError

      -- exception.

      Seed_Number   := 1001;

      Random_Number := Random_Number_Generator (Seed_Number);

      Report.Failed ("Exception not raised in High_Seed block");

   exception

      when Error : others =>

         if not FB20A00.Find (Ada.Exceptions.Exception_Name (Error),

                              "HighSeedError")

         then

            Report.Failed ("Expected HighSeedError, but found " &

                            Ada.Exceptions.Exception_Name (Error));

         end if;

   end High_Seed;

   Mid_Seed:

   begin

      -- This seed value will generate a Mid_Seed_Error exception.

      Seed_Number   := 101;

      Random_Number := Random_Number_Generator (Seed_Number);

      Report.Failed ("Exception not raised in Mid_Seed block");

   exception

      when Error : others =>

         if not FB20A00.Find (Ada.Exceptions.Exception_Name (Error),

                              "Mid_Seed_Error")

         then

            Report.Failed ("Expected Mid_Seed_Error, but found " &

                            Ada.Exceptions.Exception_Name (Error));

         end if;

   end Mid_Seed;

   Low_Seed:

   begin

      -- This seed value will result in the raising of a

      -- L_o_w_S_e_e_d_E_r_r_o_r exception.

      Seed_Number   := 11;

      Random_Number := Random_Number_Generator (Seed_Number);

      Report.Failed ("Exception not raised in Low_Seed block");

   exception

      when Error : others =>

         if not FB20A00.Find (Ada.Exceptions.Exception_Name (Error),

                              "L_o_w_S_e_e_d_E_r_r_o_r")

         then

            Report.Failed ("Expected L_o_w_S_e_e_d_E_r_r_o_r but found " &

                            Ada.Exceptions.Exception_Name (Error));

         end if;

   end Low_Seed;

   Report.Result;

end CB20A02;