| -- CC70C02.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 generic formal package is an instance. Specifically, |
| -- check that a generic formal package may be passed as an actual |
| -- parameter to another generic formal package. Check that the |
| -- visible part of the generic formal package includes the first list of |
| -- basic declarative items of the package specification. |
| -- |
| -- TEST DESCRIPTION: |
| -- A generic formal package is a package, and is an instance. |
| -- |
| -- Declare a list type in a generic package for lists of elements of any |
| -- nonlimited type (foundation code). Declare a second generic package |
| -- which declares operations for the list type, and parameterize it with |
| -- a generic formal package with the list-type package as template |
| -- (foundation code). Declare a third generic package which declares |
| -- additional operations for the list type, and parameterize it with two |
| -- generic formal packages, one with the list-type package as template, |
| -- the other with the second generic package as template. Use the first |
| -- formal package as the generic formal actual part for the second formal |
| -- package. |
| -- |
| -- TEST FILES: |
| -- The following files comprise this test: |
| -- |
| -- FC70C00.A |
| -- CC70C02.A |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 06 Dec 94 SAIC ACVC 2.0 |
| -- |
| --! |
| |
| with FC70C00_0; -- List abstraction. |
| with FC70C00_1; -- Basic list operations. |
| generic |
| |
| -- Import both the list-type abstraction defined in FC70C00_0 and the basic |
| -- list operations defined in FC70C00_1. To ensure that only basic operation |
| -- instances for lists of the same element type as that used to instantiate |
| -- the list type are accepted as actuals to this generic, pass the list-type |
| -- formal package as an actual parameter to the list-operation formal |
| -- package. |
| |
| with package Lists is new FC70C00_0 (<>); |
| with package Basic_List_Ops is new FC70C00_1 (Lists); |
| package CC70C02_0 is -- Additional list operations. |
| |
| End_of_List_Reached : exception; |
| |
| |
| -- Read from current element and advance "current" pointer. |
| procedure Read_Element (L : in out Lists.List_Type; |
| E : out Lists.Element_Type); |
| |
| -- Add element to end of list. |
| procedure Add_Element (L : in out Lists.List_Type; |
| E : in Lists.Element_Type); |
| |
| end CC70C02_0; |
| |
| |
| --==================================================================-- |
| |
| |
| package body CC70C02_0 is |
| |
| procedure Read_Element (L : in out Lists.List_Type; |
| E : out Lists.Element_Type) is |
| begin |
| if Basic_List_Ops.End_Of_List (L) then -- Use of op from the previous |
| raise End_Of_List_Reached; -- generic package. |
| else |
| E := L.Current.Item; -- Retrieve current element. |
| L.Current := L.Current.Next; -- Advance "current" pointer. |
| end if; |
| end Read_Element; |
| |
| |
| procedure Add_Element (L : in out Lists.List_Type; |
| E : in Lists.Element_Type) is |
| New_Node : Lists.Node_Pointer := new Lists.Node_Type'(E, null); |
| use type Lists.Node_Pointer; |
| begin |
| if L.First = null then -- No elements in list, so add new |
| L.First := New_Node; -- element at beginning of list. |
| else |
| L.Last.Next := New_Node; -- Add new element at end of list. |
| end if; |
| L.Last := New_Node; -- Set last-in-list pointer. |
| end Add_Element; |
| |
| |
| end CC70C02_0; |
| |
| |
| --==================================================================-- |
| |
| |
| with FC70C00_0; -- Generic list type abstraction. |
| with FC70C00_1; -- Generic list operations. |
| with CC70C02_0; -- Additional generic list operations. |
| |
| with Report; |
| procedure CC70C02 is |
| |
| type Points is range 0 .. 100; -- Discrete type. |
| |
| package Lists_of_Points is new FC70C00_0 (Points); -- Points lists. |
| |
| package Basic_Point_Ops is new -- Basic points-list ops. |
| FC70C00_1 (Lists_Of_Points); |
| |
| package Points_List_Ops is new -- More points-list ops. |
| CC70C02_0 (Lists => Lists_Of_Points, |
| Basic_List_Ops => Basic_Point_Ops); |
| |
| Scores : Lists_of_Points.List_Type; -- List of points. |
| |
| |
| -- Begin test code declarations: ----------------------- |
| |
| type TC_Score_Array is array (1 .. 3) of Points; |
| |
| TC_List_Values : constant TC_Score_Array := (23, 15, 0); |
| |
| TC_Correct_List_Values : Boolean := False; |
| |
| |
| procedure TC_Initialize_List (L : in out Lists_Of_Points.List_Type) is |
| begin -- Initial list contains 3 scores |
| for I in TC_Score_Array'Range loop -- with the values 23, 15, and 0. |
| Points_List_Ops.Add_Element (L, TC_List_Values(I)); |
| end loop; |
| end TC_Initialize_List; |
| |
| |
| procedure TC_Verify_List (L : in out Lists_Of_Points.List_Type; |
| Expected : in TC_Score_Array; |
| OK : out Boolean) is |
| Actual : TC_Score_Array; |
| begin |
| Basic_Point_Ops.Reset (L); |
| for I in TC_Score_Array'Range loop |
| Points_List_Ops.Read_Element (L, Actual(I)); |
| end loop; |
| OK := (Actual = Expected); |
| end TC_Verify_List; |
| |
| -- End test code declarations. ------------------------- |
| |
| |
| begin |
| |
| Report.Test ("CC70C02", "Check that a generic formal package may be " & |
| "passed as an actual to another formal package"); |
| |
| TC_Initialize_List (Scores); |
| TC_Verify_List (Scores, TC_List_Values, TC_Correct_List_Values); |
| |
| if not TC_Correct_List_Values then |
| Report.Failed ("List contains incorrect values"); |
| end if; |
| |
| Report.Result; |
| |
| end CC70C02; |
