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jeremybenn |
-- FDD2A00.A
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--
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-- Grant of Unlimited Rights
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--
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-- The Ada Conformity Assessment Authority (ACAA) holds unlimited
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-- rights in the software and documentation contained herein. Unlimited
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-- rights are the same as those granted by the U.S. Government for older
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-- parts of the Ada Conformity Assessment Test Suite, and are defined
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-- in DFAR 252.227-7013(a)(19). By making this public release, the ACAA
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-- intends to confer upon all recipients unlimited rights equal to those
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-- held by the ACAA. These rights include rights to use, duplicate,
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-- release or disclose the released technical data and computer software
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-- in whole or in part, in any manner and for any purpose whatsoever, and
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-- to have or permit others to do so.
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--
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-- DISCLAIMER
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--
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-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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--
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--
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-- FOUNDATION DESCRIPTION:
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-- This foundation provides the basis for testing user-defined stream
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-- attributes. It provides operations which count calls to stream
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-- attributes.
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--
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-- CHANGE HISTORY:
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-- 30 JUL 2001 PHL Initial version.
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-- 5 DEC 2001 RLB Reformatted for ACATS.
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--
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with Ada.Streams;
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use Ada.Streams;
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package FDD2A00 is
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type Kinds is (Read, Write, Input, Output);
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type Counts is array (Kinds) of Natural;
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type My_Stream (Size : Stream_Element_Count) is new Root_Stream_Type with
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record
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First : Stream_Element_Offset := 1;
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Last : Stream_Element_Offset := 0;
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Contents : Stream_Element_Array (1 .. Size);
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end record;
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procedure Clear (Stream : in out My_Stream);
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procedure Read (Stream : in out My_Stream;
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Item : out Stream_Element_Array;
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Last : out Stream_Element_Offset);
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procedure Write (Stream : in out My_Stream; Item : in Stream_Element_Array);
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generic
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type T (<>) is limited private;
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with procedure Actual_Write
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(Stream : access Root_Stream_Type'Class; Item : T);
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with function Actual_Input
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(Stream : access Root_Stream_Type'Class) return T;
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with procedure Actual_Read (Stream : access Root_Stream_Type'Class;
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Item : out T);
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with procedure Actual_Output
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(Stream : access Root_Stream_Type'Class; Item : T);
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package Counting_Stream_Ops is
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procedure Write (Stream : access Root_Stream_Type'Class; Item : T);
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function Input (Stream : access Root_Stream_Type'Class) return T;
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procedure Read (Stream : access Root_Stream_Type'Class; Item : out T);
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procedure Output (Stream : access Root_Stream_Type'Class; Item : T);
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function Get_Counts return Counts;
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end Counting_Stream_Ops;
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end FDD2A00;
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package body FDD2A00 is
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procedure Clear (Stream : in out My_Stream) is
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begin
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Stream.First := 1;
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Stream.Last := 0;
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end Clear;
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procedure Read (Stream : in out My_Stream;
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Item : out Stream_Element_Array;
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Last : out Stream_Element_Offset) is
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begin
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if Item'Length >= Stream.Last - Stream.First + 1 then
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Item (Item'First .. Item'First + Stream.Last - Stream.First) :=
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Stream.Contents (Stream.First .. Stream.Last);
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Last := Item'First + Stream.Last - Stream.First;
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Stream.First := Stream.Last + 1;
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else
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Item := Stream.Contents (Stream.First ..
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Stream.First + Item'Length - 1);
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Last := Item'Last;
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Stream.First := Stream.First + Item'Length;
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end if;
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end Read;
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procedure Write (Stream : in out My_Stream;
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Item : in Stream_Element_Array) is
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begin
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Stream.Contents (Stream.Last + 1 .. Stream.Last + Item'Length) := Item;
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Stream.Last := Stream.Last + Item'Length;
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end Write;
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package body Counting_Stream_Ops is
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Cnts : Counts := (others => 0);
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procedure Write (Stream : access Root_Stream_Type'Class; Item : T) is
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begin
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Cnts (Write) := Cnts (Write) + 1;
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Actual_Write (Stream, Item);
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end Write;
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function Input (Stream : access Root_Stream_Type'Class) return T is
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begin
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Cnts (Input) := Cnts (Input) + 1;
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return Actual_Input (Stream);
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end Input;
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procedure Read (Stream : access Root_Stream_Type'Class; Item : out T) is
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begin
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Cnts (Read) := Cnts (Read) + 1;
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Actual_Read (Stream, Item);
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end Read;
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procedure Output (Stream : access Root_Stream_Type'Class; Item : T) is
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begin
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Cnts (Output) := Cnts (Output) + 1;
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Actual_Output (Stream, Item);
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end Output;
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function Get_Counts return Counts is
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begin
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return Cnts;
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end Get_Counts;
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end Counting_Stream_Ops;
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end FDD2A00;
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