-- C730004.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 for a type declared in a package, descendants of the package -- use the full view of type. Specifically check that full view of the -- limited type is visible only in private descendants (children) and in -- the private parts and bodies of public descendants (children). -- Check that a limited type may be used as an out parameter outside -- the package that defines the type. -- -- TEST DESCRIPTION: -- This test defines a parent package containing limited private type -- definitions. Children packages are defined (one public, one private) -- that use the nonlimited full view of the types defined in the private -- part of the parent specification. -- The main declares a procedure with an out parameter that was defined -- as limited in the specification of the parent package. -- -- -- CHANGE HISTORY: -- 15 Sep 95 SAIC Initial prerelease version. -- 23 Apr 96 SAIC Added prefix for parameter in Call_Modify_File. -- 02 Nov 96 SAIC ACVC 2.1: Modified prologue and Test.Report. -- --! package C730004_0 is -- Full views of File_Descriptor, File_Mode, File_Name, and File_Type are -- are nonlimited. type File_Descriptor is limited private; type File_Mode is limited private; Active_Mode : constant File_Mode; type File_Name is limited private; type File_Type is limited private; function Next_Available_File return File_Descriptor; private type File_Descriptor is new Integer; Null_File : constant File_Descriptor := 0; First_File : constant File_Descriptor := 1; type File_Mode is (Read_Only, Write_Only, Read_Write, Archived, Corrupt, Lost); Default_Mode : constant File_Mode := Read_Only; Active_Mode : constant File_Mode := Read_Write; type File_Name is array (1 .. 6) of Character; Null_String : File_Name := " "; String1 : File_Name := "ACVC "; String2 : File_Name := " 1995"; type File_Type is record Descriptor : File_Descriptor := Null_File; Mode : File_Mode := Default_Mode; Name : File_Name := Null_String; end record; end C730004_0; --=================================================================-- package body C730004_0 is File_Count : Integer := 0; function Next_Available_File return File_Descriptor is begin File_Count := File_Count + 1; return (File_Descriptor(File_Count)); -- Type conversion. end Next_Available_File; end C730004_0; --=================================================================-- private package C730004_0.C730004_1 is -- private child -- Since full view of the nontagged File_Name is nonlimited in the parent -- package, it is not limited in the private child, so concatenation is -- available. System_File_Name : constant File_Name := String1(1..4) & String2(5..6); -- Since full view of the nontagged File_Type is nonlimited in the parent -- package, it is not limited in the private child, so a default expression -- is available. function New_File_Validated (File : File_Type := (Descriptor => First_File, Mode => Active_Mode, Name => System_File_Name)) return Boolean; -- Since full view of the nontagged File_Type is nonlimited in the parent -- package, it is not limited in the private child, so initialization -- expression in an object declaration is available. System_File : File_Type := (Null_File, Read_Only, System_File_Name); end C730004_0.C730004_1; --=================================================================-- package body C730004_0.C730004_1 is function New_File_Validated (File : File_Type := (Descriptor => First_File, Mode => Active_Mode, Name => System_File_Name)) return Boolean is Result : Boolean := False; begin if (File.Descriptor > System_File.Descriptor) and (File.Mode in Read_Only .. Read_Write) and (File.Name = "ACVC95") then Result := True; end if; return (Result); end New_File_Validated; end C730004_0.C730004_1; --=================================================================-- package C730004_0.C730004_2 is -- public child -- File_Type is limited here. procedure Create_File (File : out File_Type); procedure Modify_File (File : out File_Type); type File_Dir is limited private; -- The following three validation functions provide the capability to -- check the limited private types defined in the parent and the -- private child package from within the client program. function Validate_Create (File : in File_Type) return Boolean; function Validate_Modification (File : in File_Type) return Boolean; function Validate_Dir (Dir : in File_Dir) return Boolean; private -- Since full view of the nontagged File_Type is nonlimited in the parent -- package, it is not limited in the private part of the public child, so -- aggregates are available. Child_File : File_Type := File_Type'(Descriptor => Null_File, Mode => Write_Only, Name => String2); -- Since full view of the nontagged component File_Type is nonlimited in -- the parent package, it is not limited in the private part of the public -- child, so default expressions are available. type File_Dir is record Comp : File_Type := Child_File; end record; end C730004_0.C730004_2; --=================================================================-- with C730004_0.C730004_1; package body C730004_0.C730004_2 is procedure Create_File (File : out File_Type) is New_File : File_Type; begin New_File.Descriptor := Next_Available_File; New_File.Mode := Default_Mode; New_File.Name := C730004_0.C730004_1.System_File_Name; if C730004_0.C730004_1.New_File_Validated (New_File) then File := New_File; else File := (Null_File, Lost, "MISSED"); end if; end Create_File; -------------------------------------------------------------- procedure Modify_File (File : out File_Type) is begin File.Descriptor := Next_Available_File; File.Mode := Active_Mode; File.Name := String1; end Modify_File; -------------------------------------------------------------- function Validate_Create (File : in File_Type) return Boolean is begin if ((File.Descriptor /= Child_File.Descriptor) and (File.Mode = Read_Only) and (File.Name = "ACVC95")) then return True; else return False; end if; end Validate_Create; ------------------------------------------------------------------------ function Validate_Modification (File : in File_Type) return Boolean is begin if ((File.Descriptor /= C730004_0.C730004_1.System_File.Descriptor) and (File.Mode = Read_Write) and (File.Name = "ACVC ")) then return True; else return False; end if; end Validate_Modification; ------------------------------------------------------------------------ function Validate_Dir (Dir : in File_Dir) return Boolean is begin if ((Dir.Comp.Descriptor = C730004_0.C730004_1.System_File.Descriptor) and (Dir.Comp.Mode = Write_Only) and (Dir.Comp.Name = String2)) then return True; else return False; end if; end Validate_Dir; end C730004_0.C730004_2; --=================================================================-- with C730004_0.C730004_2; with Report; procedure C730004 is package File renames C730004_0; package File_Ops renames C730004_0.C730004_2; Validation_File : File.File_Type; Validation_Dir : File_Ops.File_Dir; ------------------------------------------------------------------------ -- Limited File_Type is allowed as an out parameter outside package File. procedure Call_Modify_File (Modified_File : out File.File_Type) is begin File_Ops.Modify_File (Modified_File); end Call_Modify_File; begin Report.Test ("C730004", "Check that for a type declared in a package, " & "descendants of the package use the full view " & "of the type. Specifically check that full " & "view of the limited type is visible only in " & "private children and in the private parts and " & "bodies of public children"); File_Ops.Create_File (Validation_File); if not File_Ops.Validate_Create (Validation_File) then Report.Failed ("Incorrect creation of file"); end if; Call_Modify_File (Validation_File); if not File_Ops.Validate_Modification (Validation_File) then Report.Failed ("Incorrect modification of file"); end if; if not File_Ops.Validate_Dir (Validation_Dir) then Report.Failed ("Incorrect creation of directory"); end if; Report.Result; end C730004;