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-- CB41001.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 the 'Identity attribute returns the unique identity of an
-- exception. Check that the Raise_Exception procedure can raise an
-- exception that is specified through the use of the 'Identity attribute,
-- and that Reraise_Occurrence can re-raise an exception occurrence
-- using an exception choice parameter.
--
-- TEST DESCRIPTION:
-- This test uses the capability of the 'Identity attribute, which
-- returns the unique identity of an exception, as an Exception_Id
-- result. This result is used as an input parameter to the procedure
-- Raise_Exception. The exception that results is handled, propagated
-- using the Reraise_Occurrence procedure, and handled again.
-- The above actions are performed for both a user-defined and a
-- predefined exception.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 11 Nov 96 SAIC ACVC 2.1: Modified Propagate_User_Exception.
--
--!
with Report;
with Ada.Exceptions;
procedure CB41001 is
begin
Report.Test ("CB41001", "Check that the 'Identity attribute returns " &
"the unique identity of an exception. Check " &
"that the 'Identity attribute is of type " &
"Exception_Id. Check that the " &
"Raise_Exception procedure can raise an " &
"exception that is specified through the " &
"use of the 'Identity attribute");
Test_Block:
declare
Check_Points : constant := 5;
type Check_Point_Array_Type is array (1..Check_Points) of Boolean;
-- Global array used to track the processing path through the test.
TC_Check_Points : Check_Point_Array_Type := (others => False);
A_User_Defined_Exception : Exception;
An_Exception_ID : Ada.Exceptions.Exception_Id :=
Ada.Exceptions.Null_Id;
procedure Propagate_User_Exception is
Hidden_Exception : Exception;
begin
-- Use the 'Identity function to store the unique identity of a
-- user defined exception into a variable of type Exception_Id.
An_Exception_ID := A_User_Defined_Exception'Identity;
-- Raise this user defined exception using the result of the
-- 'Identity attribute.
Ada.Exceptions.Raise_Exception(E => An_Exception_Id);
Report.Failed("User defined exception not raised by " &
"procedure Propagate_User_Exception");
exception
when Proc_Excpt : A_User_Defined_Exception => -- Expected exception.
begin
-- By raising a different exception at this point, the
-- information associated with A_User_Defined_Exception must
-- be correctly stacked internally.
Ada.Exceptions.Raise_Exception(Hidden_Exception'Identity);
Report.Failed("Hidden_Exception not raised by " &
"procedure Propagate_User_Exception");
exception
when others =>
TC_Check_Points(1) := True;
-- Reraise the original exception, which will be propagated
-- outside the scope of this procedure.
Ada.Exceptions.Reraise_Occurrence(Proc_Excpt);
Report.Failed("User defined exception not reraised");
end;
when others =>
Report.Failed("Unexpected exception raised by " &
"Procedure Propagate_User_Exception");
end Propagate_User_Exception;
begin
User_Exception_Block:
begin
-- Call procedure to raise, handle, and reraise a user defined
-- exception.
Propagate_User_Exception;
Report.Failed("User defined exception not propagated from " &
"procedure Propagate_User_Exception");
exception
when A_User_Defined_Exception => -- Expected exception.
TC_Check_Points(2) := True;
when others =>
Report.Failed
("Unexpected exception handled in User_Exception_Block");
end User_Exception_Block;
Predefined_Exception_Block:
begin
Inner_Block:
begin
begin
-- Use the 'Identity attribute as an input parameter to the
-- Raise_Exception procedure.
Ada.Exceptions.Raise_Exception(Constraint_Error'Identity);
Report.Failed("Constraint_Error not raised in Inner_Block");
exception
when Excpt : Constraint_Error => -- Expected exception.
TC_Check_Points(3) := True;
-- Reraise the exception.
Ada.Exceptions.Reraise_Occurrence(X => Excpt);
Report.Failed("Predefined exception not raised from " &
"within the exception handler - 1");
when others =>
Report.Failed("Incorrect result from attempt to raise " &
"Constraint_Error using the 'Identity " &
"attribute - 1");
end;
Report.Failed("Constraint_Error not reraised in Inner_Block");
exception
when Block_Excpt : Constraint_Error => -- Expected exception.
TC_Check_Points(4) := True;
-- Reraise the exception in a scope where the exception
-- was not originally raised.
Ada.Exceptions.Reraise_Occurrence(X => Block_Excpt);
Report.Failed("Predefined exception not raised from " &
"within the exception handler - 2");
when others =>
Report.Failed("Incorrect result from attempt to raise " &
"Constraint_Error using the 'Identity " &
"attribute - 2");
end Inner_Block;
Report.Failed("Exception not propagated from Inner_Block");
exception
when Constraint_Error => -- Expected exception.
TC_Check_Points(5) := True;
when others =>
Report.Failed("Unexpected exception handled after second " &
"reraise of Constraint_Error");
end Predefined_Exception_Block;
-- Verify the processing path taken through the test.
for i in 1..Check_Points loop
if not TC_Check_Points(i) then
Report.Failed("Incorrect processing path taken through test, " &
"didn't pass check point #" & Integer'Image(i));
end if;
end loop;
exception
when others => Report.Failed ("Exception raised in Test_Block");
end Test_Block;
Report.Result;
end CB41001;
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