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--- C761004.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 an object of a controlled type is finalized with the
--- enclosing master is complete.
--- Check that finalization occurs in the case where the master is
--- left by a transfer of control.
--- Specifically check for types where the derived types do not have
--- discriminants.
---
--- Check that finalization of controlled objects is
--- performed in the correct order. In particular, check that if
--- multiple objects of controlled types are declared immediately
--- within the same declarative part then they are finalized in the
--- reverse order of their creation.
---
--- TEST DESCRIPTION:
--- This test checks these conditions for subprograms and
--- block statements; both variables and constants of controlled
--- types; cases of a controlled component of a record type, as
--- well as an array with controlled components.
---
--- The base controlled types used for the test are defined
--- with a character discriminant. The initialize procedure for
--- the types will record the order of creation in a globally
--- accessible array, the finalize procedure for the types will call
--- TCTouch with that tag character. The test can then check that
--- the order of finalization is indeed the reverse of the order of
--- creation (assuming that the implementation calls Initialize in
--- the order that the objects are created).
---
---
--- CHANGE HISTORY:
--- 06 Dec 94 SAIC ACVC 2.0
--- 04 Nov 95 SAIC Fixed bugs for ACVC 2.0.1
---
---!
-
-package C761004_Support is
-
- function Pick_Char return Character;
- -- successive calls to Pick_Char return distinct characters which may
- -- be assigned to objects to track an order sequence. These characters
- -- are then used in calls to TCTouch.Touch.
-
- procedure Validate(Initcount: Natural; Testnumber:Natural);
- -- does a little extra processing prior to calling TCTouch.Validate,
- -- specifically, it reverses the stored string of characters, and checks
- -- for a correct count.
-
- Inits_Order : String(1..255);
- Inits_Called : Natural := 0;
-
-end C761004_Support;
-
-with Report;
-with TCTouch;
-package body C761004_Support is
- type Pick_Rotation is mod 52;
- type Pick_String is array(Pick_Rotation) of Character;
-
- From : constant Pick_String := "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- & "abcdefghijklmnopqrstuvwxyz";
- Recent_Pick : Pick_Rotation := Pick_Rotation'Last;
-
- function Pick_Char return Character is
- begin
- Recent_Pick := Recent_Pick +1;
- return From(Recent_Pick);
- end Pick_Char;
-
- function Invert(S:String) return String is
- T: String(1..S'Length);
- TI: Positive := 1;
- begin
- for SI in reverse S'Range loop
- T(TI) := S(SI);
- TI := TI +1;
- end loop;
- return T;
- end Invert;
-
- procedure Validate(Initcount: Natural; Testnumber:Natural) is
- Number : constant String := Natural'Image(Testnumber);
- begin
- if Inits_Called /= Initcount then
- Report.Failed("Wrong number of inits, Subtest " & Number);
- TCTouch.Flush;
- else
- TCTouch.Validate(
- Invert(Inits_Order(1..Inits_Called)),
- "Subtest " & Number, True);
- end if;
- end Validate;
-
-end C761004_Support;
-
------------------------------------------------------------------ C761004_0
-
-with Ada.Finalization;
-package C761004_0 is
- type Global is new Ada.Finalization.Controlled with record
- Tag : Character;
- end record;
- procedure Initialize( It: in out Global );
- procedure Finalize ( It: in out Global );
-
- type Second is new Ada.Finalization.Limited_Controlled with record
- Tag : Character;
- end record;
- procedure Initialize( It: in out Second );
- procedure Finalize ( It: in out Second );
-
-end C761004_0;
-
-with TCTouch;
-with C761004_Support;
-package body C761004_0 is
-
- package Sup renames C761004_Support;
-
- procedure Initialize( It: in out Global ) is
- begin
- Sup.Inits_Called := Sup.Inits_Called +1;
- It.Tag := Sup.Pick_Char;
- Sup.Inits_Order(Sup.Inits_Called) := It.Tag;
- end Initialize;
-
- procedure Finalize( It: in out Global ) is
- begin
- TCTouch.Touch(It.Tag); --------------------------------------------- Tag
- end Finalize;
-
- procedure Initialize( It: in out Second ) is
- begin
- Sup.Inits_Called := Sup.Inits_Called +1;
- It.Tag := Sup.Pick_Char;
- Sup.Inits_Order(Sup.Inits_Called) := It.Tag;
- end Initialize;
-
- procedure Finalize( It: in out Second ) is
- begin
- TCTouch.Touch(It.Tag); --------------------------------------------- Tag
- end Finalize;
-end C761004_0;
-
-------------------------------------------------------------------- C761004
-
-with Report;
-with TCTouch;
-with C761004_0;
-with C761004_Support;
-with Ada.Finalization; -- needed to be able to create extension aggregates
-procedure C761004 is
-
- Verbose : constant Boolean := False;
-
- package Sup renames C761004_Support;
-
- -- Subtest 1, general case. Check that several objects declared in a
- -- subprogram are created, and finalized in opposite order.
-
- Subtest_1_Expected_Inits : constant := 3;
-
- procedure Subtest_1 is
- Item_1 : C761004_0.Global;
- Item_2, Item_3 : C761004_0.Global;
- begin
- if Item_2.Tag = Item_3.Tag then -- not germane to the test
- Report.Failed("Duplicate tag");-- but helps prevent code elimination
- end if;
- end Subtest_1;
-
- -- Subtest 2, extension of the general case. Check that several objects
- -- created identically on the stack (via a recursive procedure) are
- -- finalized in the opposite order of their creation.
- Subtest_2_Expected_Inits : constant := 12;
- User_Exception : exception;
-
- procedure Subtest_2 is
-
- Item_1 : C761004_0.Global;
-
- -- combine recursion and exit by exception:
-
- procedure Nested(Recurs: Natural) is
- Item_3 : C761004_0.Global;
- begin
- if Verbose then
- Report.Comment("going in: " & Item_3.Tag);
- end if;
- if Recurs = 1 then
- raise User_Exception;
- else
- Nested(Recurs -1);
- end if;
- end Nested;
-
- Item_2 : C761004_0.Global;
-
- begin
- Nested(10);
- end Subtest_2;
-
- -- subtest 3, check the case of objects embedded in structures:
- -- an array
- -- a record
- Subtest_3_Expected_Inits : constant := 3;
- procedure Subtest_3 is
- type G_List is array(Positive range <>) of C761004_0.Global;
- type Pandoras_Box is record
- G : G_List(1..1);
- end record;
-
- procedure Nested(Recursions: Natural) is
- Merlin : Pandoras_Box;
- begin
- if Recursions > 1 then
- Nested(Recursions-1);
- else
- TCTouch.Validate("","Final Nested call");
- end if;
- end Nested;
-
- begin
- Nested(3);
- end Subtest_3;
-
- -- subtest 4, check the case of objects embedded in structures:
- -- an array
- -- a record
- Subtest_4_Expected_Inits : constant := 3;
- procedure Subtest_4 is
- type S_List is array(Positive range <>) of C761004_0.Second;
- type Pandoras_Box is record
- S : S_List(1..1);
- end record;
-
- procedure Nested(Recursions: Natural) is
- Merlin : Pandoras_Box;
- begin
- if Recursions > 1 then
- Nested(Recursions-1);
- else
- TCTouch.Validate("","Final Nested call");
- end if;
- end Nested;
-
- begin
- Nested(3);
- end Subtest_4;
-
-begin -- Main test procedure.
-
- Report.Test ("C761004", "Check that an object of a controlled type "
- & "is finalized when the enclosing master is "
- & "complete, left by a transfer of control, "
- & "and performed in the correct order" );
-
- Subtest_1;
- Sup.Validate(Subtest_1_Expected_Inits,1);
-
- Subtest_2_Frame: begin
- Sup.Inits_Called := 0;
- Subtest_2;
- exception
- when User_Exception => null;
- when others => Report.Failed("Wrong Exception, Subtest 2");
- end Subtest_2_Frame;
- Sup.Validate(Subtest_2_Expected_Inits,2);
-
- Sup.Inits_Called := 0;
- Subtest_3;
- Sup.Validate(Subtest_3_Expected_Inits,3);
-
- Sup.Inits_Called := 0;
- Subtest_4;
- Sup.Validate(Subtest_4_Expected_Inits,4);
-
- Report.Result;
-
-end C761004;