| -- CXACB02.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 user defined subprograms can override the default |
| -- attributes 'Input and 'Output using attribute definition clauses, |
| -- when used with objects of discriminated record and multi-dimensional |
| -- array types. |
| -- |
| -- TEST DESCRIPTION: |
| -- This test demonstrates that the default implementations of the |
| -- 'Input and 'Output attributes can be overridden by user specified |
| -- subprograms in conjunction with attribute definition clauses. |
| -- These attributes have been overridden below, and in the user defined |
| -- substitutes, values are added or subtracted to global variables. |
| -- Following the completion of the writing/reading test, the global |
| -- variables are evaluated to ensure that the user defined subprograms |
| -- were used in overriding the type-related default attributes. |
| -- |
| -- APPLICABILITY CRITERIA: |
| -- Applicable to all implementations that support external |
| -- Stream_IO files. |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 06 Dec 94 SAIC ACVC 2.0 |
| -- 14 Nov 95 SAIC Corrected test errors for ACVC 2.0.1. |
| -- |
| --! |
| |
| with Report; |
| with Ada.Streams.Stream_IO; |
| |
| procedure CXACB02 is |
| begin |
| |
| Report.Test ("CXACB02", "Check that user defined subprograms can " & |
| "override the default attributes 'Input and " & |
| "'Output using attribute definition clauses"); |
| |
| Test_for_Stream_IO_Support: |
| declare |
| |
| Util_File : Ada.Streams.Stream_IO.File_Type; |
| Util_Stream : Ada.Streams.Stream_IO.Stream_Access; |
| Utility_Filename : constant String := Report.Legal_File_Name; |
| |
| begin |
| |
| -- If an implementation does not support Stream_IO in a particular |
| -- environment, the exception Use_Error or Name_Error will be raised on |
| -- calls to various Stream_IO operations. This block statement |
| -- encloses a call to Create, which should produce an exception in a |
| -- non-supportive environment. These exceptions will be handled to |
| -- produce a Not_Applicable result. |
| |
| Ada.Streams.Stream_IO.Create (Util_File, |
| Ada.Streams.Stream_IO.Out_File, |
| Utility_Filename); |
| |
| Operational_Test_Block: |
| declare |
| |
| type Customer_Type is (Residence, Apartment, Commercial); |
| type Electric_Usage_Type is range 0..100000; |
| type Months_In_Service_Type is range 1..12; |
| type Quarterly_Period_Type is (Spring, Summer, Autumn, Winter); |
| subtype Month_In_Quarter_Type is Positive range 1..3; |
| type Service_History_Type is |
| array (Quarterly_Period_Type range <>, |
| Month_In_Quarter_Type range <>) of Electric_Usage_Type; |
| |
| type Service_Type (Customer : Customer_Type) is |
| record |
| Name : String (1..21); |
| Account_ID : Natural range 0..100; |
| case Customer is |
| when Residence | Apartment => |
| Low_Income_Credit : Boolean := False; |
| when Commercial => |
| Baseline_Allowance : Natural range 0..1000; |
| Quantity_Discount : Boolean := False; |
| end case; |
| end record; |
| |
| |
| -- Mode conformant, user defined subprograms that will override |
| -- the type-related attributes. |
| -- In this test, the user defines these subprograms to add/subtract |
| -- specific values from global variables. |
| |
| function Service_Input |
| (Stream : access Ada.Streams.Root_Stream_Type'Class) |
| return Service_Type; |
| |
| procedure Service_Output |
| (Stream : access Ada.Streams.Root_Stream_Type'Class; |
| Item : Service_Type); |
| |
| function History_Input |
| (Stream : access Ada.Streams.Root_Stream_Type'Class) |
| return Service_History_Type; |
| |
| procedure History_Output |
| (Stream : access Ada.Streams.Root_Stream_Type'Class; |
| Item : Service_History_Type); |
| |
| |
| -- Attribute definition clauses. |
| |
| for Service_Type'Input use Service_Input; |
| for Service_Type'Output use Service_Output; |
| |
| for Service_History_Type'Input use History_Input; |
| for Service_History_Type'Output use History_Output; |
| |
| |
| -- Object Declarations |
| |
| Customer1 : Service_Type (Residence) := |
| (Residence, "1221 Morningstar Lane", 44, False); |
| Customer2 : Service_Type (Apartment) := |
| (Customer => Apartment, |
| Account_ID => 67, |
| Name => "15 South Front St. #8", |
| Low_Income_Credit => True); |
| Customer3 : Service_Type (Commercial) := |
| (Commercial, |
| "12442 Central Avenue ", |
| 100, |
| Baseline_Allowance => 938, |
| Quantity_Discount => True); |
| |
| C1_Service_History : |
| Service_History_Type (Quarterly_Period_Type, |
| Month_In_Quarter_Type) := |
| (Spring => (1 => 35, 2 => 39, 3 => 32), |
| Summer => (1 => 34, 2 => 33, 3 => 39), |
| Autumn => (1 => 45, 2 => 40, 3 => 38), |
| Winter => (1 => 53, 2 => 0, 3 => 0)); |
| |
| C2_Service_History : |
| Service_History_Type (Quarterly_Period_Type range Spring..Summer, |
| Month_In_Quarter_Type) := |
| (Spring => (23, 22, 0), Summer => (0, 0, 0)); |
| |
| C3_Service_History : |
| Service_History_Type (Quarterly_Period_Type, |
| Month_In_Quarter_Type) := |
| (others => (others => 200)); |
| |
| |
| TC_Input_Total : Integer := 0; |
| TC_Output_Total : Integer := 0; |
| |
| |
| -- Subprogram bodies. |
| -- These subprograms are designed to override the default attributes |
| -- 'Input and 'Output for the specified types. Each adds/subtracts |
| -- a quantity to/from a program control variable, indicating its |
| -- activity. Each user defined "Input" function uses the 'Read |
| -- attribute for the type to accomplish the operation. Likewise, |
| -- each user defined "Output" subprogram uses the 'Write attribute |
| -- for the type. |
| |
| function Service_Input |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class ) |
| return Service_Type is |
| Customer : Customer_Type; |
| begin |
| TC_Input_Total := TC_Input_Total + 1; |
| |
| -- Extract the discriminant value from the stream. |
| -- This discriminant would not otherwise be extracted from the |
| -- stream when the Service_Type'Read attribute is used below. |
| Customer_Type'Read (Stream, Customer); |
| |
| declare |
| -- Declare a constant of Service_Type, using the value just |
| -- read from the stream as the discriminant value of the |
| -- object. |
| Service : Service_Type(Customer); |
| begin |
| Service_Type'Read (Stream, Service); |
| return Service; |
| end; |
| end Service_Input; |
| |
| |
| procedure Service_Output |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| Item : Service_Type ) is |
| begin |
| TC_Output_Total := TC_Output_Total + 2; |
| -- Write the discriminant value to the stream. |
| -- The attribute 'Write (for the record type) will not write the |
| -- discriminant of the record object to the stream. Therefore, it |
| -- must be explicitly written using the 'Write attribute of the |
| -- discriminant type. |
| Customer_Type'Write (Stream, Item.Customer); |
| -- Write the record component values (but not the discriminant) to |
| -- the stream. |
| Service_Type'Write (Stream, Item); |
| end Service_Output; |
| |
| |
| function History_Input |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class ) |
| return Service_History_Type is |
| Quarter_Bound_Low : Quarterly_Period_Type; |
| Quarter_Bound_High : Quarterly_Period_Type; |
| Month_Bound_Low : Month_In_Quarter_Type; |
| Month_Bound_High : Month_In_Quarter_Type; |
| begin |
| TC_Input_Total := TC_Input_Total + 3; |
| |
| -- Read the value of the array bounds from the stream. |
| -- Use these bounds in the creation of an array object that will |
| -- be used to store data from the stream. |
| -- The array bound values would not otherwise be read from the |
| -- stream by use of the Service_History_Type'Read attribute. |
| Quarterly_Period_Type'Read (Stream, Quarter_Bound_Low); |
| Quarterly_Period_Type'Read (Stream, Quarter_Bound_High); |
| Month_In_Quarter_Type'Read (Stream, Month_Bound_Low); |
| Month_In_Quarter_Type'Read (Stream, Month_Bound_High); |
| |
| declare |
| Service_History_Array : |
| Service_History_Type |
| (Quarterly_Period_Type range |
| Quarter_Bound_Low..Quarter_Bound_High, |
| Month_In_Quarter_Type range |
| Month_Bound_Low .. Month_Bound_High); |
| begin |
| Service_History_Type'Read (Stream, Service_History_Array); |
| return Service_History_Array; |
| end; |
| end History_Input; |
| |
| |
| procedure History_Output |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| Item : Service_History_Type ) is |
| begin |
| TC_Output_Total := TC_Output_Total + 7; |
| -- Write the upper/lower bounds of the array object dimensions to |
| -- the stream. |
| Quarterly_Period_Type'Write (Stream, Item'First(1)); |
| Quarterly_Period_Type'Write (Stream, Item'Last(1)); |
| Month_In_Quarter_Type'Write (Stream, Item'First(2)); |
| Month_In_Quarter_Type'Write (Stream, Item'Last(2)); |
| -- Write the array values to the stream in canonical order (last |
| -- dimension varying fastest). |
| Service_History_Type'Write (Stream, Item); |
| end History_Output; |
| |
| |
| |
| begin |
| |
| Util_Stream := Ada.Streams.Stream_IO.Stream (Util_File); |
| |
| -- Write data to the stream. A customer service record is followed |
| -- by a service history array. |
| |
| Service_Type'Output (Util_Stream, Customer1); |
| Service_History_Type'Output (Util_Stream, C1_Service_History); |
| |
| Service_Type'Output (Util_Stream, Customer2); |
| Service_History_Type'Output (Util_Stream, C2_Service_History); |
| |
| Service_Type'Output (Util_Stream, Customer3); |
| Service_History_Type'Output (Util_Stream, C3_Service_History); |
| |
| |
| -- Read data from the stream, and verify the use of the user specified |
| -- attributes. |
| |
| Verify_Data_Block: |
| declare |
| |
| TC_Residence : Service_Type (Residence); |
| TC_Apartment : Service_Type (Apartment); |
| TC_Commercial : Service_Type (Commercial); |
| |
| TC_History1 : Service_History_Type (Quarterly_Period_Type, |
| Month_In_Quarter_Type) := |
| (others => (others => Electric_Usage_Type'First)); |
| |
| TC_History2 : Service_History_Type (Quarterly_Period_Type |
| range Spring .. Summer, |
| Month_In_Quarter_Type) := |
| (others => (others => Electric_Usage_Type'First)); |
| |
| TC_History3 : Service_History_Type (Quarterly_Period_Type, |
| Month_In_Quarter_Type) := |
| (others => (others => Electric_Usage_Type'First)); |
| |
| begin |
| |
| -- Reset Stream file to mode In_File. |
| |
| Ada.Streams.Stream_IO.Reset (Util_File, |
| Ada.Streams.Stream_IO.In_File); |
| |
| -- Read data from the stream. |
| |
| TC_Residence := Service_Type'Input (Util_Stream); |
| TC_History1 := Service_History_Type'Input (Util_Stream); |
| |
| TC_Apartment := Service_Type'Input (Util_Stream); |
| TC_History2 := Service_History_Type'Input (Util_Stream); |
| |
| TC_Commercial := Service_Type'Input (Util_Stream); |
| TC_History3 := Service_History_Type'Input (Util_Stream); |
| |
| |
| -- Verify product data was correctly written to/read from stream, |
| -- including discriminants and array bounds. |
| |
| if (TC_Residence /= Customer1) or |
| (TC_Residence.Customer /= Customer1.Customer) or |
| (TC_History1'Last(1) /= C1_Service_History'Last(1)) or |
| (TC_History1'First(1) /= C1_Service_History'First(1)) or |
| (TC_History1'Last(2) /= C1_Service_History'Last(2)) or |
| (TC_History1'First(2) /= C1_Service_History'First(2)) |
| then |
| Report.Failed ("Incorrect data from stream - 1"); |
| end if; |
| |
| if (TC_Apartment /= Customer2) or |
| (TC_Apartment.Customer /= Customer2.Customer) or |
| (TC_History2 /= C2_Service_History) or |
| (TC_History2'Last(1) /= C2_Service_History'Last(1)) or |
| (TC_History2'First(1) /= C2_Service_History'First(1)) or |
| (TC_History2'Last(2) /= C2_Service_History'Last(2)) or |
| (TC_History2'First(2) /= C2_Service_History'First(2)) |
| then |
| Report.Failed ("Incorrect data from stream - 2"); |
| end if; |
| |
| if (TC_Commercial /= Customer3) or |
| (TC_Commercial.Customer /= Customer3.Customer) or |
| (TC_History3 /= C3_Service_History) or |
| (TC_History3'Last(1) /= C3_Service_History'Last(1)) or |
| (TC_History3'First(1) /= C3_Service_History'First(1)) or |
| (TC_History3'Last(2) /= C3_Service_History'Last(2)) or |
| (TC_History3'First(2) /= C3_Service_History'First(2)) |
| then |
| Report.Failed ("Incorrect data from stream - 3"); |
| end if; |
| |
| -- Verify that the user defined subprograms were used to override |
| -- the default 'Input and 'Output attributes. |
| -- There were three calls on each of the user defined attributes. |
| |
| if (TC_Input_Total /= 12 ) or (TC_Output_Total /= 27 ) then |
| Report.Failed ("Incorrect use of user defined attributes"); |
| end if; |
| |
| end Verify_Data_Block; |
| |
| exception |
| |
| when others => |
| Report.Failed ("Exception raised in Operational Test Block"); |
| |
| end Operational_Test_Block; |
| |
| if Ada.Streams.Stream_IO.Is_Open (Util_File) then |
| Ada.Streams.Stream_IO.Delete (Util_File); |
| else |
| Ada.Streams.Stream_IO.Open (Util_File, |
| Ada.Streams.Stream_IO.Out_File, |
| Utility_Filename); |
| Ada.Streams.Stream_IO.Delete (Util_File); |
| end if; |
| |
| |
| exception |
| |
| -- Since Use_Error or Name_Error can be raised if, for the specified |
| -- mode, the environment does not support Stream_IO operations, |
| -- the following handlers are included: |
| |
| when Ada.Streams.Stream_IO.Name_Error => |
| Report.Not_Applicable ("Name_Error raised on Stream IO Create"); |
| |
| when Ada.Streams.Stream_IO.Use_Error => |
| Report.Not_Applicable ("Use_Error raised on Stream IO Create"); |
| |
| when others => |
| Report.Failed ("Unexpected exception raised"); |
| |
| end Test_for_Stream_IO_Support; |
| |
| Report.Result; |
| |
| end CXACB02; |
