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-- C761006.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 Program_Error is raised when:

--        * an exception is raised if Finalize invoked as part of an

--          assignment operation; or

--        * an exception is raised if Adjust invoked as part of an assignment

--          operation, after any other adjustment due to be performed are

--          performed; or

--        * an exception is raised if Finalize invoked as part of a call on

--          Unchecked_Deallocation, after any other finalizations to be

--          performed are performed.

--

-- TEST DESCRIPTION:

--      This test defines these four controlled types:

--        Good

--        Bad_Initialize

--        Bad_Adjust

--        Bad_Finalize

--      The type name conveys the associated failure.  The operations in type

--      good will "touch" the boolean array indicating correct path

--      utilization for the purposes of checking "other  are

--      performed", where  ::= initialization, adjusting, and

--      finalization

--

--

--

-- CHANGE HISTORY:

--      12 APR 94   SAIC   Initial version

--      02 MAY 96   SAIC   Visibility fixed for 2.1

--      13 FEB 97   PWB.CTA Corrected value of Events_Occurring at line 286

--      01 DEC 97   EDS    Made correction wrt RM 7.6(21)

--      16 MAR 01   RLB    Corrected Adjust cases to avoid problems with

--                         RM 7.6.1(16/1) from Technical Corrigendum 1.

--

--!

------------------------------------------------------------- C761006_Support

package C761006_Support is

  type Events is ( Good_Initialize, Good_Adjust, Good_Finalize );

  type Event_Array is array(Events) of Boolean;

  Events_Occurring : Event_Array := (others => False);

  Propagating_Exception : exception;

  procedure Raise_Propagating_Exception(Do_It: Boolean);

  function Unique_Value return Natural;

end C761006_Support;

------------------------------------------------------------- C761006_Support

with Report;

package body C761006_Support is

  procedure Raise_Propagating_Exception(Do_It: Boolean) is

  begin

     if Report.Ident_Bool(Do_It) then

       raise Propagating_Exception;

     end if;

  end Raise_Propagating_Exception;

  Seed : Natural := 0;

  function Unique_Value return Natural is

  begin

    Seed := Seed +1;

    return Seed;

  end Unique_Value;

end C761006_Support;

------------------------------------------------------------------- C761006_0

with Ada.Finalization;

with C761006_Support;

package C761006_0 is

  type Good is new Ada.Finalization.Controlled

    with record

      Initialized : Boolean := False;

      Adjusted    : Boolean := False;

      Unique      : Natural := C761006_Support.Unique_Value;

    end record;

  procedure Initialize( It: in out Good );

  procedure Adjust    ( It: in out Good );

  procedure Finalize  ( It: in out Good );

  type Bad_Initialize is private;

  type Bad_Adjust     is private;

  type Bad_Finalize   is private;

  Inits_Order  : String(1..255);

  Inits_Called : Natural := 0;

private

  type Bad_Initialize is new Ada.Finalization.Controlled

                                             with null record;

  procedure Initialize( It: in out Bad_Initialize );

  type Bad_Adjust is new Ada.Finalization.Controlled

                                         with null record;

  procedure Adjust    ( It: in out Bad_Adjust );

  type Bad_Finalize is

       new Ada.Finalization.Controlled with null record;

  procedure Finalize  ( It: in out Bad_Finalize );

end C761006_0;

------------------------------------------------------------------- C761006_1

with Ada.Finalization;

with C761006_0;

package C761006_1 is

  type Init_Check_Root is new Ada.Finalization.Controlled with record

    Good_Component : C761006_0.Good;

    Init_Fails     : C761006_0.Bad_Initialize;

  end record;

  type Adj_Check_Root is new Ada.Finalization.Controlled with record

    Good_Component : C761006_0.Good;

    Adj_Fails      : C761006_0.Bad_Adjust;

  end record;

  type Fin_Check_Root is new Ada.Finalization.Controlled with record

    Good_Component : C761006_0.Good;

    Fin_Fails      : C761006_0.Bad_Finalize;

  end record;

end C761006_1;

------------------------------------------------------------------- C761006_2

with C761006_1;

package C761006_2 is

  type Init_Check is new C761006_1.Init_Check_Root with null record;

  type Adj_Check is  new C761006_1.Adj_Check_Root  with null record;

  type Fin_Check is  new C761006_1.Fin_Check_Root  with null record;

end C761006_2;

------------------------------------------------------------------- C761006_0

with Report;

with C761006_Support;

package body C761006_0 is

  package Sup renames C761006_Support;

  procedure Initialize( It: in out Good ) is

  begin

    Sup.Events_Occurring( Sup.Good_Initialize ) := True;

    It.Initialized := True;

  end Initialize;

  procedure Adjust    ( It: in out Good ) is

  begin

    Sup.Events_Occurring( Sup.Good_Adjust ) := True;

    It.Adjusted := True;

    It.Unique := C761006_Support.Unique_Value;

  end Adjust;

  procedure Finalize  ( It: in out Good ) is

  begin

    Sup.Events_Occurring( Sup.Good_Finalize ) := True;

  end Finalize;

  procedure Initialize( It: in out Bad_Initialize ) is

  begin

    Sup.Raise_Propagating_Exception(Report.Ident_Bool(True));

  end Initialize;

  procedure Adjust( It: in out Bad_Adjust ) is

  begin

    Sup.Raise_Propagating_Exception(Report.Ident_Bool(True));

  end Adjust;

  procedure Finalize( It: in out Bad_Finalize ) is

  begin

    Sup.Raise_Propagating_Exception(Report.Ident_Bool(True));

  end Finalize;

end C761006_0;

--------------------------------------------------------------------- C761006

with Report;

with C761006_0;

with C761006_2;

with C761006_Support;

with Ada.Exceptions;

with Ada.Finalization;

with Unchecked_Deallocation;

procedure C761006 is

  package Sup renames C761006_Support;

  use type Sup.Event_Array;

  type Procedure_Handle is access procedure;

  type Test_ID is ( Simple, Initialize, Adjust, Finalize );

  Sub_Tests : array(Test_ID) of Procedure_Handle;

  procedure Simple_Test is

    A_Good_Object : C761006_0.Good; -- should call Initialize

  begin

    if not A_Good_Object.Initialized then

      Report.Failed("Good object not initialized");

    end if;

    -- should call Adjust

    A_Good_Object := ( Ada.Finalization.Controlled

                       with Unique => 0, others => False );

    if not A_Good_Object.Adjusted then

      Report.Failed("Good object not adjusted");

    end if;

    -- should call Finalize before end of scope

  end Simple_Test;

  procedure Initialize_Test is

  begin

    declare

      This_Object_Fails_In_Initialize : C761006_2.Init_Check;

    begin

      Report.Failed("Exception in Initialize did not occur");

    exception

      when others =>

        Report.Failed("Initialize caused exception at wrong lex");

    end;

    Report.Failed("Error in execution sequence");

  exception

    when Sup.Propagating_Exception => -- this is correct

      if not Sup.Events_Occurring(Sup.Good_Initialize) then

        Report.Failed("Initialization of Good Component did not occur");

      end if;

  end Initialize_Test;

  procedure Adjust_Test is

    This_Object_OK     : C761006_2.Adj_Check;

    This_Object_Target : C761006_2.Adj_Check;

  begin

    Check_Adjust_Due_To_Assignment: begin

      This_Object_Target := This_Object_OK;

      Report.Failed("Adjust did not propagate any exception");

    exception

      when Program_Error =>  -- expected case

             if not This_Object_Target.Good_Component.Adjusted then

               Report.Failed("other adjustment not performed");

             end if;

      when others =>

             Report.Failed("Adjust propagated wrong exception");

    end Check_Adjust_Due_To_Assignment;

    C761006_Support.Events_Occurring := (True, False, False);

    Check_Adjust_Due_To_Initial_Assignment: declare

      Another_Target : C761006_2.Adj_Check := This_Object_OK;

    begin

      Report.Failed("Adjust did not propagate any exception");

    exception

      when others => Report.Failed("Adjust caused exception at wrong lex");

    end Check_Adjust_Due_To_Initial_Assignment;

  exception

    when Program_Error =>  -- expected case

           if Sup.Events_Occurring(Sup.Good_Finalize) /=

              Sup.Events_Occurring(Sup.Good_Adjust) then

              -- RM 7.6.1(16/1) says that the good Adjust may or may not

              -- be performed; but if it is, then the Finalize must be

              -- performed; and if it is not, then the Finalize must not

              -- performed.

              if Sup.Events_Occurring(Sup.Good_Finalize) then

                 Report.Failed("Good adjust not performed with bad adjust, " &

                               "but good finalize was");

              else

                 Report.Failed("Good adjust performed with bad adjust, " &

                               "but good finalize was not");

              end if;

           end if;

    when others =>

           Report.Failed("Adjust propagated wrong exception");

  end Adjust_Test;

  procedure Finalize_Test is

    Fin_Not_Perf : constant String := "other finalizations not performed";

    procedure Finalize_15 is

      Item   : C761006_2.Fin_Check;

      Target : C761006_2.Fin_Check;

    begin

      Item := Target;

      -- finalization of Item should cause PE

      -- ARM7.6:21 allows the implementation to omit the assignment of the

      -- value into an anonymous object, which is the point at which Adjust

      -- is normally called.  However, this would result in Program_Error's

      -- being raised before the call to Adjust, with the consequence that

      -- Adjust is never called.

    exception

      when Program_Error => -- expected case

             if not Sup.Events_Occurring(Sup.Good_Finalize) then

               Report.Failed("Assignment: " & Fin_Not_Perf);

             end if;

      when others =>

             Report.Failed("Other exception in Finalize_15");

    -- finalization of Item/Target should cause PE

    end Finalize_15;

  -- check failure in finalize due to Unchecked_Deallocation

  type Shark is access C761006_2.Fin_Check;

  procedure Catch is

    new Unchecked_Deallocation( C761006_2.Fin_Check, Shark );

  procedure Finalize_17 is

    White : Shark := new C761006_2.Fin_Check;

  begin

    Catch( White );

  exception

    when Program_Error =>

           if not Sup.Events_Occurring(Sup.Good_Finalize) then

             Report.Failed("Unchecked_Deallocation: " & Fin_Not_Perf);

           end if;

  end Finalize_17;

  begin

    Exception_In_Finalization: begin

      Finalize_15;

    exception

      when Program_Error => null; -- anticipated

    end Exception_In_Finalization;

    Use_Of_Unchecked_Deallocation: begin

      Finalize_17;

    exception

      when others =>

        Report.Failed("Unchecked_Deallocation check, unwanted exception");

    end Use_Of_Unchecked_Deallocation;

  end Finalize_Test;

begin  -- Main test procedure.

  Report.Test ("C761006", "Check that exceptions raised in Initialize, " &

                          "Adjust and Finalize are processed correctly" );

  Sub_Tests := (Simple_Test'Access, Initialize_Test'Access,

                Adjust_Test'Access, Finalize_Test'Access);

  for Test in Sub_Tests'Range loop

    begin

      Sup.Events_Occurring := (others => False);

      Sub_Tests(Test).all;

      case Test is

        when Simple | Adjust =>

          if Sup.Events_Occurring /= Sup.Event_Array ' ( others => True ) then

            Report.Failed ( "Other operation missing in " &

                            Test_ID'Image ( Test ) );

          end if;

        when  Initialize =>

          null;

        when Finalize  =>

          -- Note that for Good_Adjust, we may get either True or False

          if Sup.Events_Occurring ( Sup.Good_Initialize ) = False or

             Sup.Events_Occurring ( Sup.Good_Finalize ) = False

          then

            Report.Failed ( "Other operation missing in " &

                            Test_ID'Image ( Test ) );

          end if;

      end case;

    exception

       when How: others => Report.Failed( Ada.Exceptions.Exception_Name( How )

                                        & " from " & Test_ID'Image( Test ) );

    end;

  end loop;

  Report.Result;

end C761006;