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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/ada/acats/tests/cxa/cxac001.a
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+-- CXAC001.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 attribute T'Write will, for any specific non-limited
+-- type T, write an item of the subtype to the stream.
+--
+-- Check that the attribute T'Read will, for a specific non-limited
+-- type T, read a value of the subtype from the stream.
+--
+-- TEST DESCRIPTION:
+-- The scenario depicted in this test is that of an environment where
+-- product data is stored in stream form, then reconstructed into the
+-- appropriate data structures. Several records of product information
+-- are stored in an array; the array is passed as a parameter to a
+-- procedure for storage in the stream. A header is created based on the
+-- number of data records stored in the array. The header is then written
+-- to the stream, followed by each record maintained in the array.
+-- In order to retrieve data from the stream, the header information is
+-- read from the stream, and the data stored in the header is used to
+-- perform the appropriate number of read operations of record data from
+-- the stream. All data read from the stream is validated against the
+--- values that were written to the stream.
+--
+-- APPLICABILITY CRITERIA:
+-- Applicable to all systems capable of supporting IO operations on
+-- external Stream_IO files.
+--
+--
+-- CHANGE HISTORY:
+-- 06 Dec 94 SAIC ACVC 2.0
+-- 08 Nov 95 SAIC Corrected call to Read in Procedure Retrieve_Data
+-- for ACVC 2.0.1.
+-- 27 Feb 08 PWB.CTA Allowed for non-support of certain IO operations.
+--!
+
+with Ada.Streams.Stream_IO;
+with Report;
+
+procedure CXAC001 is
+
+ package Strm_Pack renames Ada.Streams.Stream_IO;
+ The_File : Strm_Pack.File_Type;
+ The_Filename : constant String :=
+ Report.Legal_File_Name ( Nam => "CXAC001" );
+ Incomplete : exception;
+
+
+begin
+
+ Report.Test ("CXAC001", "Check that the 'Read and 'Write attributes " &
+ "will transfer an object of a specific, " &
+ "non-limited type to/from a stream");
+
+ Test_for_Stream_IO_Support:
+ 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.
+
+ Strm_Pack.Create (The_File, Strm_Pack.Out_File, The_Filename);
+
+ exception
+
+ when Ada.Streams.Stream_IO.Use_Error |
+ Ada.Streams.Stream_IO.Name_Error =>
+ Report.Not_Applicable
+ ( "Files not supported - Create as Out_File for Stream_IO" );
+ raise Incomplete;
+
+ end Test_for_Stream_IO_Support;
+
+ Operational_Test_Block:
+ declare
+
+ The_Stream : Strm_Pack.Stream_Access;
+ Todays_Date : String (1 .. 6) := "271193";
+
+ type ID_Type is range 1 .. 100;
+ type Size_Type is (Small, Medium, Large, XLarge);
+
+ type Header_Type is record
+ Number_of_Elements : Natural := 0;
+ Origination_Date : String (1 .. 6);
+ end record;
+
+ type Data_Type is record
+ ID : ID_Type;
+ Size : Size_Type;
+ end record;
+
+ type Data_Array_Type is array (Positive range <>) of Data_Type;
+
+ Product_Information_1 : Data_Array_Type (1 .. 3) := ((20, Large),
+ (55, Small),
+ (89, XLarge));
+
+ Product_Information_2 : Data_Array_Type (1 .. 4) := (( 5, XLarge),
+ (27, Small),
+ (79, Medium),
+ (93, XLarge));
+
+ procedure Store_Data ( The_Stream : in Strm_Pack.Stream_Access;
+ The_Array : in Data_Array_Type ) is
+ Header : Header_Type;
+ begin
+
+ -- Fill in header info.
+ Header.Number_of_Elements := The_Array'Length;
+ Header.Origination_Date := Todays_Date;
+
+ -- Write header to stream.
+ Header_Type'Write (The_Stream, Header);
+
+ -- Write each record in the array to the stream.
+ for I in 1 .. Header.Number_of_Elements loop
+ Data_Type'Write (The_Stream, The_Array (I));
+ end loop;
+
+ end Store_Data;
+
+ procedure Retrieve_Data (The_Stream : in Strm_Pack.Stream_Access;
+ The_Header : out Header_Type;
+ The_Array : out Data_Array_Type ) is
+ begin
+
+ -- Read header from the stream.
+ Header_Type'Read (The_Stream, The_Header);
+
+ -- Read the records from the stream into the array.
+ for I in 1 .. The_Header.Number_of_Elements loop
+ Data_Type'Read (The_Stream, The_Array (I));
+ end loop;
+
+ end Retrieve_Data;
+
+ begin
+
+ -- Assign access value.
+ The_Stream := Strm_Pack.Stream (The_File);
+
+ -- Product information is to be stored in the stream file. These
+ -- data arrays are of different sizes (actually, the records
+ -- are stored individually, not as a single array). Prior to the
+ -- record data being written, a header record is initialized with
+ -- information about the data to be written, then itself is written
+ -- to the stream.
+
+ Store_Data (The_Stream, Product_Information_1);
+ Store_Data (The_Stream, Product_Information_2);
+
+ Test_Verification_Block:
+ declare
+ Product_Header_1 : Header_Type;
+ Product_Header_2 : Header_Type;
+ Product_Array_1 : Data_Array_Type (1 .. 3);
+ Product_Array_2 : Data_Array_Type (1 .. 4);
+ begin
+
+ Reset1:
+ begin
+ Strm_Pack.Reset (The_File, Strm_Pack.In_File);
+ exception
+ when Ada.Streams.Stream_IO.Use_Error =>
+ Report.Not_Applicable
+ ( "Reset to In_File not supported for Stream_IO" );
+ raise Incomplete;
+ end Reset1;
+
+ -- Data is read from the stream, first the appropriate header,
+ -- then the associated data records, which are then reconstructed
+ -- into a data array of product information.
+
+ Retrieve_Data (The_Stream, Product_Header_1, Product_Array_1);
+
+ -- Validate a field in the header.
+ if (Product_Header_1.Origination_Date /= Todays_Date) or
+ (Product_Header_1.Number_of_Elements /= 3)
+ then
+ Report.Failed ("Incorrect Header_1 info read from stream");
+ end if;
+
+ -- Validate the data records read from the file.
+ for I in 1 .. Product_Header_1.Number_of_Elements loop
+ if (Product_Array_1(I) /= Product_Information_1(I)) then
+ Report.Failed ("Incorrect Product 1 info read from" &
+ " record: " & Integer'Image (I));
+ end if;
+ end loop;
+
+ -- Repeat this read and verify operation for the next parcel of
+ -- data. Again, header and data record information are read from
+ -- the same stream file.
+ Retrieve_Data (The_Stream, Product_Header_2, Product_Array_2);
+
+ if (Product_Header_2.Origination_Date /= Todays_Date) or
+ (Product_Header_2.Number_of_Elements /= 4)
+ then
+ Report.Failed ("Incorrect Header_2 info read from stream");
+ end if;
+
+ for I in 1 .. Product_Header_2.Number_of_Elements loop
+ if (Product_Array_2(I) /= Product_Information_2(I)) then
+ Report.Failed ("Incorrect Product_2 info read from" &
+ " record: " & Integer'Image (I));
+ end if;
+ end loop;
+
+ exception
+
+ when Incomplete =>
+ raise;
+
+ when Strm_Pack.End_Error => -- If correct number of
+ -- items not in file (data
+ -- overwritten), then fail.
+ Report.Failed ("Incorrect number of record elements in file");
+ if not Strm_Pack.Is_Open (The_File) then
+ Strm_Pack.Open (The_File, Strm_Pack.Out_File, The_Filename);
+ end if;
+
+ when others =>
+ Report.Failed ("Exception raised in Data Verification Block");
+ if not Strm_Pack.Is_Open (The_File) then
+ Strm_Pack.Open (The_File, Strm_Pack.Out_File, The_Filename);
+ end if;
+
+ end Test_Verification_Block;
+
+ exception
+
+ when Incomplete =>
+ raise;
+
+ when others =>
+ Report.Failed ("Exception raised in Operational Test Block");
+
+ end Operational_Test_Block;
+
+ Deletion:
+ begin
+ -- Delete the file.
+ if Strm_Pack.Is_Open (The_File) then
+ Strm_Pack.Delete (The_File);
+ else
+ Strm_Pack.Open (The_File, Strm_Pack.Out_File, The_Filename);
+ Strm_Pack.Delete (The_File);
+ end if;
+
+ exception
+
+ when others =>
+ Report.Failed
+ ( "Delete not properly implemented for Stream_IO" );
+ end Deletion;
+
+ Report.Result;
+
+exception
+ when Incomplete =>
+ Report.Result;
+ when others =>
+ Report.Failed ( "Unexpected exception" );
+ Report.Result;
+
+end CXAC001;