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-- CD92001.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 if X denotes a scalar object, X'Valid
-- yields true if an only if the object denoted by X is normal and
-- has a valid representation.
--
-- TEST DESCRIPTION:
-- Using Unchecked_Conversion, Image and Value attributes, combined
-- with string manipulation, cause valid and invalid values to be
-- stored in various objects. Check their validity with the
-- attribute 'Valid. Invalid objects are created in a loop which
-- performs a simplistic check to ensure that the values being used
-- are indeed not valid, then assigns the value using an instance of
-- Unchecked_Conversion. The creation of the tables of valid values
-- is trivial.
--
-- APPLICABILITY CRITERIA:
-- All implementations must attempt to compile this test.
--
-- For implementations validating against Systems Programming Annex (C):
-- this test must execute and report PASSED.
--
-- For implementations not validating against Annex C:
-- this test may report compile time errors at one or more points
-- indicated by "-- N/A => ERROR", in which case it may be graded as
-- inapplicable. Otherwise, the test must execute and report PASSED.
--
--
-- CHANGE HISTORY:
-- 10 MAY 95 SAIC Initial version
-- 07 MAY 96 SAIC Changed U_C to Ada.U_C for 2.1
-- 05 JAN 99 RLB Added Component_Size clauses to compensate
-- for the fact that there is no required size
-- for either the enumeration or modular components.
--!
with Report;
with Ada.Unchecked_Conversion;
with System;
procedure CD92001 is
type Sparse_Enumerated is
( Help, Home, Page_Up, Del, EndK,
Page_Down, Up, Left, Down, Right );
for Sparse_Enumerated use ( Help => 2,
Home => 4,
Page_Up => 8,
Del => 16,
EndK => 32,
Page_Down => 64,
Up => 128,
Left => 256,
Down => 512,
Right => 1024 );
type Mod_10 is mod 10;
type Default_Enumerated is ( Zero, One, Two, Three, Four,
Five, Six, Seven, Eight, Nine,
Clear, '=', '/', '*', '-',
'+', Enter );
for Default_Enumerated'Size use 8;
Default_Enumerated_Count : constant := 17;
type Mod_By_Enum_Items is mod Default_Enumerated_Count;
type Mod_Same_Size_As_Sparse_Enum is mod 2**12;
-- Sparse_Enumerated 'Size;
type Mod_Same_Size_As_Def_Enum is mod 2**8;
-- Default_Enumerated'Size;
subtype Test_Width is Positive range 1..100;
-- Note: There is no required relationship between 'Size and 'Component_Size,
-- so we must use component_size clauses here.
-- We use the following expressions to insure that the component size is a
-- multiple of the Storage_Unit.
Sparse_Component_Size : constant := ((Sparse_Enumerated'Size / System.Storage_Unit) +
Boolean'Pos((Sparse_Enumerated'Size mod System.Storage_Unit) /= 0)) *
System.Storage_Unit;
Default_Component_Size : constant := ((Default_Enumerated'Size / System.Storage_Unit) +
Boolean'Pos((Sparse_Enumerated'Size mod System.Storage_Unit) /= 0)) *
System.Storage_Unit;
type Sparse_Enum_Table is array(Test_Width) of Sparse_Enumerated;
for Sparse_Enum_Table'Component_Size use Sparse_Component_Size; -- N/A => ERROR.
type Def_Enum_Table is array(Test_Width) of Default_Enumerated;
for Def_Enum_Table'Component_Size use Default_Component_Size; -- N/A => ERROR.
type Sparse_Mod_Table is
array(Test_Width) of Mod_Same_Size_As_Sparse_Enum;
for Sparse_Mod_Table'Component_Size use Sparse_Component_Size; -- N/A => ERROR.
type Default_Mod_Table is
array(Test_Width) of Mod_Same_Size_As_Def_Enum;
for Default_Mod_Table'Component_Size use Default_Component_Size; -- N/A => ERROR.
function UC_Sparse_Mod_Enum is
new Ada.Unchecked_Conversion( Sparse_Mod_Table, Sparse_Enum_Table );
function UC_Def_Mod_Enum is
new Ada.Unchecked_Conversion( Default_Mod_Table, Def_Enum_Table );
Valid_Sparse_Values : Sparse_Enum_Table;
Valid_Def_Values : Def_Enum_Table;
Sample_Enum_Value_Table : Sparse_Mod_Table;
Sample_Def_Value_Table : Default_Mod_Table;
-- fill the Valid tables with valid values for conversion
procedure Fill_Valid is
K : Mod_10 := 0;
P : Mod_By_Enum_Items := 0;
begin
for I in Test_Width loop
Valid_Sparse_Values(I) := Sparse_Enumerated'Val( K );
Valid_Def_Values(I) := Default_Enumerated'Val( Integer(P) );
K := K +1;
P := P +1;
end loop;
end Fill_Valid;
-- fill the Sample tables with invalid values for conversion
procedure Fill_Invalid is
K : Mod_Same_Size_As_Sparse_Enum := 1;
P : Mod_Same_Size_As_Def_Enum := 1;
begin
for I in Test_Width loop
K := K +13;
if K mod 2 = 0 then -- oops, that would be a valid value
K := K +1;
end if;
if P = Mod_Same_Size_As_Def_Enum'Last
or P < Default_Enumerated_Count then -- that would be valid
P := Default_Enumerated_Count + 1;
else
P := P +1;
end if;
Sample_Enum_Value_Table(I) := K;
Sample_Def_Value_Table(I) := P;
end loop;
Valid_Sparse_Values := UC_Sparse_Mod_Enum(Sample_Enum_Value_Table);
Valid_Def_Values := UC_Def_Mod_Enum(Sample_Def_Value_Table);
end Fill_Invalid;
-- fill the tables with second set of valid values for conversion
procedure Refill_Valid is
K : Mod_10 := 0;
P : Mod_By_Enum_Items := 0;
Table : Array(Mod_10) of Mod_Same_Size_As_Sparse_Enum
:= ( 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024 );
begin
for I in Test_Width loop
Sample_Enum_Value_Table(I) := Table(K);
Sample_Def_Value_Table(I) := Mod_Same_Size_As_Def_Enum(P);
K := K +1;
P := P +1;
end loop;
Valid_Sparse_Values := UC_Sparse_Mod_Enum(Sample_Enum_Value_Table);
Valid_Def_Values := UC_Def_Mod_Enum(Sample_Def_Value_Table);
end Refill_Valid;
procedure Validate(Expect_Valid: Boolean) is
begin -- here's where we actually use the tested attribute
for K in Test_Width loop
if Valid_Sparse_Values(K)'Valid /= Expect_Valid then
Report.Failed("Expected 'Valid =" & Boolean'Image(Expect_Valid)
& " for Sparse item " & Integer'Image(K) );
end if;
end loop;
for P in Test_Width loop
if Valid_Def_Values(P)'Valid /= Expect_Valid then
Report.Failed("Expected 'Valid =" & Boolean'Image(Expect_Valid)
& " for Default item " & Integer'Image(P) );
end if;
end loop;
end Validate;
begin -- Main test procedure.
Report.Test ("CD92001", "Check object attribute: X'Valid" );
Fill_Valid;
Validate(True);
Fill_Invalid;
Validate(False);
Refill_Valid;
Validate(True);
Report.Result;
end CD92001;
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