| -- CXACA02.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 'Read and 'Write using attribute definition clauses. |
| -- Use objects of record types. |
| -- |
| -- TEST DESCRIPTION: |
| -- This test demonstrates that the default implementations of the |
| -- 'Read and 'Write 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. |
| -- 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 |
| -- 21 Nov 95 SAIC Corrected recursive attribute definitions |
| -- for ACVC 2.0.1. |
| -- 24 Aug 96 SAIC Corrected typo in test verification criteria. |
| -- |
| --! |
| |
| with Report; |
| with Ada.Streams.Stream_IO; |
| |
| procedure CXACA02 is |
| begin |
| |
| Report.Test ("CXACA02", "Check that user defined subprograms can " & |
| "override the default attributes 'Read and " & |
| "'Write using attribute definition clauses"); |
| |
| Test_for_Stream_IO_Support: |
| declare |
| |
| Data_File : Ada.Streams.Stream_IO.File_Type; |
| Data_Stream : Ada.Streams.Stream_IO.Stream_Access; |
| The_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 (Data_File, |
| Ada.Streams.Stream_IO.Out_File, |
| The_Filename); |
| |
| Operational_Test_Block: |
| declare |
| |
| type Origin_Type is (Foreign, Domestic); |
| subtype String_Data_Type is String(1..8); |
| |
| type Product_Type is |
| record |
| Item : String_Data_Type; |
| ID : Natural range 1..100; |
| Manufacture : Origin_Type := Domestic; |
| Distributor : String_Data_Type; |
| Importer : String_Data_Type; |
| end record; |
| |
| type Sales_Record_Type is |
| record |
| Name : String_Data_Type; |
| Sale_Item : Boolean := False; |
| Buyer : Origin_Type; |
| Quantity_Discount : Boolean; |
| Cash_Discount : Boolean; |
| 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. |
| |
| procedure Product_Read |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : out Product_Type ); |
| |
| procedure Product_Write |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : Product_Type ); |
| |
| procedure Sales_Read |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : out Sales_Record_Type ); |
| |
| procedure Sales_Write |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : Sales_Record_Type ); |
| |
| -- Attribute definition clauses. |
| |
| for Product_Type'Read use Product_Read; |
| for Product_Type'Write use Product_Write; |
| |
| for Sales_Record_Type'Read use Sales_Read; |
| for Sales_Record_Type'Write use Sales_Write; |
| |
| |
| -- Object Declarations |
| |
| Product_01 : Product_Type := |
| ("Product1", 1, Domestic, "Distrib1", "Import 1"); |
| Product_02 : Product_Type := |
| ("Product2", 2, Foreign, "Distrib2", "Import 2"); |
| |
| Sale_Rec_01 : Sales_Record_Type := |
| ("Buyer 01", False, Domestic, True, True); |
| Sale_Rec_02 : Sales_Record_Type := |
| ("Buyer 02", True, Domestic, True, False); |
| Sale_Rec_03 : Sales_Record_Type := (Name => "Buyer 03", |
| Sale_Item => True, |
| Buyer => Foreign, |
| Quantity_Discount => False, |
| Cash_Discount => True); |
| Sale_Rec_04 : Sales_Record_Type := |
| ("Buyer 04", True, Foreign, False, False); |
| Sale_Rec_05 : Sales_Record_Type := |
| ("Buyer 05", False, Foreign, False, False); |
| |
| TC_Read_Total : Integer := 100; |
| TC_Write_Total : Integer := 0; |
| |
| |
| -- Subprogram bodies. |
| -- These subprograms are designed to override the default attributes |
| -- 'Read and 'Write for the specified types. Each adds/subtracts |
| -- a quantity to/from a program control variable, indicating its |
| -- activity. In addition, each component of the record is |
| -- individually read from or written to the stream, using the |
| -- appropriate 'Read or 'Write attribute for the component type. |
| -- The string components are moved to/from the stream using the |
| -- 'Input and 'Output attributes for the string subtype, so that |
| -- the bounds of the strings are also written/read. |
| |
| procedure Product_Read |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : out Product_Type ) is |
| begin |
| TC_Read_Total := TC_Read_Total - 10; |
| |
| The_Item.Item := String_Data_Type'Input(Data_Stream); -- Field 1. |
| Natural'Read(Data_Stream, The_Item.ID); -- Field 2. |
| Origin_Type'Read(Data_Stream, -- Field 3. |
| The_Item.Manufacture); |
| The_Item.Distributor := -- Field 4. |
| String_Data_Type'Input(Data_Stream); |
| The_Item.Importer := -- Field 5. |
| String_Data_Type'Input(Data_Stream); |
| end Product_Read; |
| |
| |
| procedure Product_Write |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : Product_Type ) is |
| begin |
| TC_Write_Total := TC_Write_Total + 5; |
| |
| String_Data_Type'Output(Data_Stream, The_Item.Item); -- Field 1. |
| Natural'Write(Data_Stream, The_Item.ID); -- Field 2. |
| Origin_Type'Write(Data_Stream, -- Field 3. |
| The_Item.Manufacture); |
| String_Data_Type'Output(Data_Stream, -- Field 4. |
| The_Item.Distributor); |
| String_Data_Type'Output(Data_Stream, -- Field 5. |
| The_Item.Importer); |
| end Product_Write; |
| |
| |
| procedure Sales_Read |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : out Sales_Record_Type ) is |
| begin |
| TC_Read_Total := TC_Read_Total - 20; |
| |
| The_Item.Name := String_Data_Type'Input(Data_Stream); -- Field 1. |
| Boolean'Read(Data_Stream, The_Item.Sale_Item); -- Field 2. |
| Origin_Type'Read(Data_Stream, The_Item.Buyer); -- Field 3. |
| Boolean'Read(Data_Stream, The_Item.Quantity_Discount); -- Field 4. |
| Boolean'Read(Data_Stream, The_Item.Cash_Discount); -- Field 5. |
| end Sales_Read; |
| |
| |
| procedure Sales_Write |
| ( Stream : access Ada.Streams.Root_Stream_Type'Class; |
| The_Item : Sales_Record_Type ) is |
| begin |
| TC_Write_Total := TC_Write_Total + 10; |
| |
| String_Data_Type'Output(Data_Stream, The_Item.Name); -- Field 1. |
| Boolean'Write(Data_Stream, The_Item.Sale_Item); -- Field 2. |
| Origin_Type'Write(Data_Stream, The_Item.Buyer); -- Field 3. |
| Boolean'Write(Data_Stream, The_Item.Quantity_Discount); -- Field 4. |
| Boolean'Write(Data_Stream, The_Item.Cash_Discount); -- Field 5. |
| end Sales_Write; |
| |
| |
| |
| begin |
| |
| Data_Stream := Ada.Streams.Stream_IO.Stream (Data_File); |
| |
| -- Write product and sales data to the stream. |
| |
| Product_Type'Write (Data_Stream, Product_01); |
| Sales_Record_Type'Write (Data_Stream, Sale_Rec_01); |
| Sales_Record_Type'Write (Data_Stream, Sale_Rec_02); |
| |
| Product_Type'Write (Data_Stream, Product_02); |
| Sales_Record_Type'Write (Data_Stream, Sale_Rec_03); |
| Sales_Record_Type'Write (Data_Stream, Sale_Rec_04); |
| Sales_Record_Type'Write (Data_Stream, Sale_Rec_05); |
| |
| -- Read data from the stream, and verify the use of the user specified |
| -- attributes. |
| |
| Verify_Data_Block: |
| declare |
| |
| TC_Product1, |
| TC_Product2 : Product_Type; |
| |
| TC_Sale1, |
| TC_Sale2, |
| TC_Sale3, |
| TC_Sale4, |
| TC_Sale5 : Sales_Record_Type; |
| |
| begin |
| |
| -- Reset the mode of the stream file so that Read/Input |
| -- operations may be performed. |
| |
| Ada.Streams.Stream_IO.Reset (Data_File, |
| Ada.Streams.Stream_IO.In_File); |
| |
| -- Data is read/reconstructed from the stream, in the order that |
| -- the data was placed into the stream. |
| |
| Product_Type'Read (Data_Stream, TC_Product1); |
| Sales_Record_Type'Read (Data_Stream, TC_Sale1); |
| Sales_Record_Type'Read (Data_Stream, TC_Sale2); |
| |
| Product_Type'Read (Data_Stream, TC_Product2); |
| Sales_Record_Type'Read (Data_Stream, TC_Sale3); |
| Sales_Record_Type'Read (Data_Stream, TC_Sale4); |
| Sales_Record_Type'Read (Data_Stream, TC_Sale5); |
| |
| -- Verify product data was correctly written to/read from stream. |
| |
| if TC_Product1 /= Product_01 then |
| Report.Failed ("Data verification error, Product 1"); |
| end if; |
| if TC_Product2 /= Product_02 then |
| Report.Failed ("Data verification error, Product 2"); |
| end if; |
| |
| if TC_Sale1 /= Sale_Rec_01 then |
| Report.Failed ("Data verification error, Sale_Rec_01"); |
| end if; |
| if TC_Sale2 /= Sale_Rec_02 then |
| Report.Failed ("Data verification error, Sale_Rec_02"); |
| end if; |
| if TC_Sale3 /= Sale_Rec_03 then |
| Report.Failed ("Data verification error, Sale_Rec_03"); |
| end if; |
| if TC_Sale4 /= Sale_Rec_04 then |
| Report.Failed ("Data verification error, Sale_Rec_04"); |
| end if; |
| if TC_Sale5 /= Sale_Rec_05 then |
| Report.Failed ("Data verification error, Sale_Rec_05"); |
| end if; |
| |
| -- Verify that the user defined subprograms were used to |
| -- override the default 'Read and 'Write attributes. |
| -- There were two "product" reads and two writes; there |
| -- were five "sale record" reads and five writes. |
| |
| if (TC_Read_Total /= -20) or (TC_Write_Total /= 60) 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 (Data_File) then |
| Ada.Streams.Stream_IO.Delete (Data_File); |
| else |
| Ada.Streams.Stream_IO.Open (Data_File, |
| Ada.Streams.Stream_IO.Out_File, |
| The_Filename); |
| Ada.Streams.Stream_IO.Delete (Data_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 CXACA02; |
