| -- CXA9002.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 operations defined in the generic package |
| -- Ada.Storage_IO provide the ability to store and retrieve objects |
| -- of tagged types from in-memory buffers. |
| -- |
| -- TEST DESCRIPTION: |
| -- The following scenario demonstrates how objects of a tagged type, |
| -- extended types, and twice extended types can be written/read |
| -- to/from Direct_IO files. The Storage_IO subprograms, Read and Write, |
| -- demonstrated in this scenario, perform tag "fixing" prior to/following |
| -- transfer to the Direct_IO files. |
| -- This method is especially important for those implementations that |
| -- represent tags as pointers, or for cases where the tagged objects |
| -- are read in by a program other than the one that wrote them. |
| -- |
| -- In this small example, we have attempted to simulate the situation |
| -- where two independent programs are using a series of Direct_IO files, |
| -- one writing data to the files, and the second program reading the |
| -- data from those files. Two procedures are defined, the first |
| -- simulating the program responsible for writing, the second simulating |
| -- a separate program opening and reading the data from the files. |
| -- |
| -- The hierarchy of types used in this test can be displayed as follows: |
| -- |
| -- Account_Type |
| -- / \ |
| -- / \ |
| -- / \ |
| -- Cash_Account_Type Investment_Account_Type |
| -- / \ |
| -- / \ |
| -- / \ |
| -- Checking_Account_Type Savings_Account_Type |
| -- |
| -- APPLICABILITY CRITERIA: |
| -- Applicable to implementations capable of supporting external |
| -- Direct_IO files. |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 06 Dec 94 SAIC ACVC 2.0 |
| -- 08 Nov 95 SAIC Corrected incorrect prefix of 'Tag for ACVC 2.0.1, |
| -- and mode of files in Procedure Read_Data. |
| -- Added verification of objects reconstructed from |
| -- files. |
| -- 27 Feb 97 PWB.CTA Allowed for non-support of some IO operations |
| --! |
| |
| package CXA9002_0 is |
| |
| type Investment_Type is (Stocks, Bonds, Mutual_Funds); |
| type Savings_Type is (Standard, Business, Impound); |
| |
| type Account_Type is tagged |
| record |
| Num : String (1..3); |
| end record; |
| |
| type Cash_Account_Type is new Account_Type with |
| record |
| Years_As_Customer : Natural := 1; |
| end record; |
| |
| type Investment_Account_Type is new Account_Type with |
| record |
| Investment_Vehicle : Investment_Type := Stocks; |
| end record; |
| |
| type Checking_Account_Type is new Cash_Account_Type with |
| record |
| Checks_Per_Year : Positive := 200; |
| Interest_Bearing : Boolean := False; |
| end record; |
| |
| type Savings_Account_Type is new Cash_Account_Type with |
| record |
| Kind : Savings_Type := Standard; |
| end record; |
| |
| end CXA9002_0; |
| |
| --- |
| |
| with Report; |
| with Ada.Storage_IO; |
| with Ada.Direct_IO; |
| with Ada.Tags; |
| with CXA9002_0; |
| |
| procedure CXA9002 is |
| package Dir_IO is new Ada.Direct_IO (Integer); |
| Test_File : Dir_IO.File_Type; |
| Incomplete : exception; |
| begin |
| |
| Report.Test ("CXA9002", "Check that the operations defined in the " & |
| "generic package Ada.Storage_IO provide the " & |
| "ability to store and retrieve objects of " & |
| "tagged types from in-memory buffers"); |
| |
| |
| Test_For_Direct_IO_Support: |
| begin |
| |
| -- The following Create does not have any bearing on the test scenario, |
| -- but is included to check that the implementation supports Direct_IO |
| -- files. An exception on this Create statement will raise a Name_Error |
| -- or Use_Error, which will be handled to produce a Not_Applicable |
| -- result. If created, the file is immediately deleted, as it is not |
| -- needed for the program scenario. |
| |
| Dir_IO.Create (Test_File, |
| Dir_IO.Out_File, |
| Report.Legal_File_Name(1)); |
| exception |
| |
| when Dir_IO.Use_Error | Dir_IO.Name_Error => |
| Report.Not_Applicable |
| ( "Files not supported - Create as Out_File for Direct_IO" ); |
| raise Incomplete; |
| |
| end Test_for_Direct_IO_Support; |
| |
| Deletion: |
| begin |
| Dir_IO.Delete (Test_File); |
| exception |
| when others => |
| Report.Failed |
| ( "Delete not properly implemented for Direct_IO" ); |
| end Deletion; |
| |
| Test_Block: |
| declare |
| |
| use CXA9002_0; |
| |
| Acct_Filename : constant String := Report.Legal_File_Name(1); |
| Cash_Filename : constant String := Report.Legal_File_Name(2); |
| Inv_Filename : constant String := Report.Legal_File_Name(3); |
| Chk_Filename : constant String := Report.Legal_File_Name(4); |
| Sav_Filename : constant String := Report.Legal_File_Name(5); |
| |
| type Tag_Pointer_Type is access String; |
| |
| TC_Account_Type_Tag, |
| TC_Cash_Account_Type_Tag, |
| TC_Investment_Account_Type_Tag, |
| TC_Checking_Account_Type_Tag, |
| TC_Savings_Account_Type_Tag : Tag_Pointer_Type; |
| |
| TC_Account : Account_Type := |
| (Num => "123"); |
| |
| TC_Cash_Account : Cash_Account_Type := |
| (Num => "234", |
| Years_As_Customer => 3); |
| |
| TC_Investment_Account : Investment_Account_Type := |
| (Num => "456", |
| Investment_Vehicle => Bonds); |
| |
| TC_Checking_Account : Checking_Account_Type := |
| (Num => "567", |
| Years_As_Customer => 2, |
| Checks_Per_Year => 300, |
| Interest_Bearing => True); |
| |
| TC_Savings_Account : Savings_Account_Type := |
| (Num => "789", |
| Years_As_Customer => 14, |
| Kind => Business); |
| |
| procedure Buffer_Data is |
| |
| Account : Account_Type := |
| TC_Account; |
| Cash_Account : Cash_Account_Type := |
| TC_Cash_Account; |
| Investment_Account : Investment_Account_Type := |
| TC_Investment_Account; |
| Checking_Account : Checking_Account_Type := |
| TC_Checking_Account; |
| Savings_Account : Savings_Account_Type := |
| TC_Savings_Account; |
| |
| -- The instantiations below are a central point in this test. |
| -- Storage_IO is instantiated for each of the specific tagged |
| -- type. These instantiated packages will be used to compress |
| -- tagged objects of these various types into buffers that will |
| -- be written to the Direct_IO files declared below. |
| |
| package Acct_SIO is new Ada.Storage_IO (Account_Type); |
| package Cash_SIO is new Ada.Storage_IO (Cash_Account_Type); |
| package Inv_SIO is new Ada.Storage_IO (Investment_Account_Type); |
| package Chk_SIO is new Ada.Storage_IO (Checking_Account_Type); |
| package Sav_SIO is new Ada.Storage_IO (Savings_Account_Type); |
| |
| -- Direct_IO is instantiated for the buffer types defined in the |
| -- instantiated Storage_IO packages. |
| |
| package Acct_DIO is new Ada.Direct_IO (Acct_SIO.Buffer_Type); |
| package Cash_DIO is new Ada.Direct_IO (Cash_SIO.Buffer_Type); |
| package Inv_DIO is new Ada.Direct_IO (Inv_SIO.Buffer_Type); |
| package Chk_DIO is new Ada.Direct_IO (Chk_SIO.Buffer_Type); |
| package Sav_DIO is new Ada.Direct_IO (Sav_SIO.Buffer_Type); |
| |
| Acct_Buffer : Acct_SIO.Buffer_Type; |
| Cash_Buffer : Cash_SIO.Buffer_Type; |
| Inv_Buffer : Inv_SIO.Buffer_Type; |
| Chk_Buffer : Chk_SIO.Buffer_Type; |
| Sav_Buffer : Sav_SIO.Buffer_Type; |
| |
| Acct_File : Acct_DIO.File_Type; |
| Cash_File : Cash_DIO.File_Type; |
| Inv_File : Inv_DIO.File_Type; |
| Chk_File : Chk_DIO.File_Type; |
| Sav_File : Sav_DIO.File_Type; |
| |
| begin |
| |
| Acct_DIO.Create (Acct_File, Acct_DIO.Out_File, Acct_Filename); |
| Cash_DIO.Create (Cash_File, Cash_DIO.Out_File, Cash_Filename); |
| Inv_DIO.Create (Inv_File, Inv_DIO.Out_File, Inv_Filename); |
| Chk_DIO.Create (Chk_File, Chk_DIO.Out_File, Chk_Filename); |
| Sav_DIO.Create (Sav_File, Sav_DIO.Out_File, Sav_Filename); |
| |
| -- Store the tag values of the objects declared above for |
| -- comparison with tag values of objects following processing. |
| |
| TC_Account_Type_Tag := |
| new String'(Ada.Tags.External_Tag(Account_Type'Tag)); |
| |
| TC_Cash_Account_Type_Tag := |
| new String'(Ada.Tags.External_Tag(Cash_Account_Type'Tag)); |
| |
| TC_Investment_Account_Type_Tag := |
| new String'(Ada.Tags.External_Tag(Investment_Account_Type'Tag)); |
| |
| TC_Checking_Account_Type_Tag := |
| new String'(Ada.Tags.External_Tag(Checking_Account_Type'Tag)); |
| |
| TC_Savings_Account_Type_Tag := |
| new String'(Ada.Tags.External_Tag(Savings_Account_Type'Tag)); |
| |
| -- Prepare tagged data for writing to the Direct_IO files using |
| -- Storage_IO procedure to place data in buffers. |
| |
| Acct_SIO.Write (Buffer => Acct_Buffer, Item => Account); |
| Cash_SIO.Write (Cash_Buffer, Cash_Account); |
| Inv_SIO.Write (Inv_Buffer, Item => Investment_Account); |
| Chk_SIO.Write (Buffer => Chk_Buffer, Item => Checking_Account); |
| Sav_SIO.Write (Sav_Buffer, Savings_Account); |
| |
| -- At this point, the data and associated tag values have been |
| -- buffered by the Storage_IO procedure, and the buffered data |
| -- can be written to the appropriate Direct_IO file. |
| |
| Acct_DIO.Write (File => Acct_File, Item => Acct_Buffer); |
| Cash_DIO.Write (Cash_File, Cash_Buffer); |
| Inv_DIO.Write (Inv_File, Item => Inv_Buffer); |
| Chk_DIO.Write (File => Chk_File, Item =>Chk_Buffer); |
| Sav_DIO.Write (Sav_File, Sav_Buffer); |
| |
| -- Close all Direct_IO files. |
| |
| Acct_DIO.Close (Acct_File); |
| Cash_DIO.Close (Cash_File); |
| Inv_DIO.Close (Inv_File); |
| Chk_DIO.Close (Chk_File); |
| Sav_DIO.Close (Sav_File); |
| |
| exception |
| when others => Report.Failed("Exception raised in Buffer_Data"); |
| end Buffer_Data; |
| |
| procedure Read_Data is |
| |
| Account : Account_Type; |
| Cash_Account : Cash_Account_Type; |
| Investment_Account : Investment_Account_Type; |
| Checking_Account : Checking_Account_Type; |
| Savings_Account : Savings_Account_Type; |
| |
| -- Storage_IO is instantiated for each of the specific tagged |
| -- type. |
| |
| package Acct_SIO is new Ada.Storage_IO (Account_Type); |
| package Cash_SIO is new Ada.Storage_IO (Cash_Account_Type); |
| package Inv_SIO is new Ada.Storage_IO (Investment_Account_Type); |
| package Chk_SIO is new Ada.Storage_IO (Checking_Account_Type); |
| package Sav_SIO is new Ada.Storage_IO (Savings_Account_Type); |
| |
| -- Direct_IO is instantiated for the buffer types defined in the |
| -- instantiated Storage_IO packages. |
| |
| package Acct_DIO is new Ada.Direct_IO (Acct_SIO.Buffer_Type); |
| package Cash_DIO is new Ada.Direct_IO (Cash_SIO.Buffer_Type); |
| package Inv_DIO is new Ada.Direct_IO (Inv_SIO.Buffer_Type); |
| package Chk_DIO is new Ada.Direct_IO (Chk_SIO.Buffer_Type); |
| package Sav_DIO is new Ada.Direct_IO (Sav_SIO.Buffer_Type); |
| |
| Acct_Buffer : Acct_SIO.Buffer_Type; |
| Cash_Buffer : Cash_SIO.Buffer_Type; |
| Inv_Buffer : Inv_SIO.Buffer_Type; |
| Chk_Buffer : Chk_SIO.Buffer_Type; |
| Sav_Buffer : Sav_SIO.Buffer_Type; |
| |
| Acct_File : Acct_DIO.File_Type; |
| Cash_File : Cash_DIO.File_Type; |
| Inv_File : Inv_DIO.File_Type; |
| Chk_File : Chk_DIO.File_Type; |
| Sav_File : Sav_DIO.File_Type; |
| |
| begin |
| |
| -- Open the Direct_IO files. |
| |
| Acct_DIO.Open (Acct_File, Acct_DIO.In_File, Acct_Filename); |
| Cash_DIO.Open (Cash_File, Cash_DIO.In_File, Cash_Filename); |
| Inv_DIO.Open (Inv_File, Inv_DIO.In_File, Inv_Filename); |
| Chk_DIO.Open (Chk_File, Chk_DIO.In_File, Chk_Filename); |
| Sav_DIO.Open (Sav_File, Sav_DIO.In_File, Sav_Filename); |
| |
| -- Read the buffer data from the files using Direct_IO. |
| |
| Acct_DIO.Read (File => Acct_File, Item => Acct_Buffer); |
| Cash_DIO.Read (Cash_File, Cash_Buffer); |
| Inv_DIO.Read (Inv_File, Item => Inv_Buffer); |
| Chk_DIO.Read (File => Chk_File, Item =>Chk_Buffer); |
| Sav_DIO.Read (Sav_File, Sav_Buffer); |
| |
| -- At this point, the data and associated tag values are stored |
| -- in buffers. Use the Storage_IO procedure Read to recreate the |
| -- tagged objects from the buffers. |
| |
| Acct_SIO.Read (Buffer => Acct_Buffer, Item => Account); |
| Cash_SIO.Read (Cash_Buffer, Cash_Account); |
| Inv_SIO.Read (Inv_Buffer, Item => Investment_Account); |
| Chk_SIO.Read (Buffer => Chk_Buffer, Item => Checking_Account); |
| Sav_SIO.Read (Sav_Buffer, Savings_Account); |
| |
| -- Delete all Direct_IO files. |
| |
| Acct_DIO.Delete (Acct_File); |
| Cash_DIO.Delete (Cash_File); |
| Inv_DIO.Delete (Inv_File); |
| Chk_DIO.Delete (Chk_File); |
| Sav_DIO.Delete (Sav_File); |
| |
| Data_Verification_Block: |
| begin |
| |
| if Account /= TC_Account then |
| Report.Failed("Incorrect Account object reconstructed"); |
| end if; |
| |
| if Cash_Account /= TC_Cash_Account then |
| Report.Failed |
| ("Incorrect Cash_Account object reconstructed"); |
| end if; |
| |
| if Investment_Account /= TC_Investment_Account then |
| Report.Failed |
| ("Incorrect Investment_Account object reconstructed"); |
| end if; |
| |
| if Checking_Account /= TC_Checking_Account then |
| Report.Failed |
| ("Incorrect Checking_Account object reconstructed"); |
| end if; |
| |
| if Savings_Account /= TC_Savings_Account then |
| Report.Failed |
| ("Incorrect Savings_Account object reconstructed"); |
| end if; |
| |
| exception |
| when others => |
| Report.Failed |
| ("Exception raised during Data_Verification Block"); |
| end Data_Verification_Block; |
| |
| |
| -- To ensure that the tags of the values reconstructed by |
| -- Storage_IO were properly preserved, object tag values following |
| -- object reconstruction are compared with tag values of objects |
| -- stored prior to processing. |
| |
| Tag_Verification_Block: |
| begin |
| |
| if TC_Account_Type_Tag.all /= |
| Ada.Tags.External_Tag(Account_Type'Class(Account)'Tag) |
| then |
| Report.Failed("Incorrect Account tag"); |
| end if; |
| |
| if TC_Cash_Account_Type_Tag.all /= |
| Ada.Tags.External_Tag( |
| Cash_Account_Type'Class(Cash_Account)'Tag) |
| then |
| Report.Failed("Incorrect Cash_Account tag"); |
| end if; |
| |
| if TC_Investment_Account_Type_Tag.all /= |
| Ada.Tags.External_Tag( |
| Investment_Account_Type'Class(Investment_Account)'Tag) |
| then |
| Report.Failed("Incorrect Investment_Account tag"); |
| end if; |
| |
| if TC_Checking_Account_Type_Tag.all /= |
| Ada.Tags.External_Tag( |
| Checking_Account_Type'Class(Checking_Account)'Tag) |
| then |
| Report.Failed("Incorrect Checking_Account tag"); |
| end if; |
| |
| if TC_Savings_Account_Type_Tag.all /= |
| Ada.Tags.External_Tag( |
| Savings_Account_Type'Class(Savings_Account)'Tag) |
| then |
| Report.Failed("Incorrect Savings_Account tag"); |
| end if; |
| |
| exception |
| when others => |
| Report.Failed ("Exception raised during tag evaluation"); |
| end Tag_Verification_Block; |
| |
| exception |
| when others => Report.Failed ("Exception in Read_Data"); |
| end Read_Data; |
| |
| begin -- Test_Block |
| |
| -- Enter the data into the appropriate files. |
| Buffer_Data; |
| |
| -- Reconstruct the data from files, and verify the results. |
| Read_Data; |
| |
| exception |
| when others => Report.Failed ("Exception raised in Test_Block"); |
| end Test_Block; |
| |
| Report.Result; |
| |
| exception |
| when Incomplete => |
| Report.Result; |
| when others => |
| Report.Failed ( "Unexpected exception" ); |
| Report.Result; |
| |
| end CXA9002; |
