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-- CXB3002.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 specifications of the package Interfaces.C.Strings
--      are available for use.
--
-- TEST DESCRIPTION:
--      This test verifies that the types and subprograms specified for the
--      interface are present
--
-- APPLICABILITY CRITERIA: 
--      If an implementation provides packages Interfaces.C and
--      Interfaces.C.Strings, this test must compile, execute, and 
--      report "PASSED".
--
--
-- CHANGE HISTORY:
--      06 Dec 94   SAIC    ACVC 2.0
--      28 Feb 96   SAIC    Added applicability criteria.
--
--!

with Report;
with Interfaces.C;                                            -- N/A => ERROR
with Interfaces.C.Strings;                                    -- N/A => ERROR

procedure CXB3002 is
   package Strings renames Interfaces.C.Strings;              
   package C renames Interfaces.C;                            

begin

   Report.Test ("CXB3002", "Check the specification of Interfaces.C.Strings");


   declare  -- encapsulate the test

      TC_Int_1      : integer := 1;
      TC_Int_2      : integer := 1;
      TC_String     : String := "ABCD";
      TC_Boolean    : Boolean := true;
      TC_char_array : C.char_array (1..5);
      TC_size_t     : C.size_t := C.size_t'first;


      --  Note In all of the following the Strings spec. being tested
      --  is shown in comment lines
      -- 
      --    type char_array_access is access all char_array;
      TST_char_array_access :  Strings.char_array_access := 
                                       new Interfaces.C.char_array (1..5);

      --    type chars_ptr is private;
      --    Null_Ptr : constant chars_ptr;
      TST_chars_ptr : Strings.chars_ptr := Strings.Null_ptr;

      --  type chars_ptr_array is array (size_t range <>) of chars_ptr;
      TST_chars_ptr_array : Strings.chars_ptr_array(1..5);

   begin    -- encapsulation

      -- Arrange that the calls to the subprograms are compiled but
      -- not executed
      -- 
      if not Report.Equal ( TC_Int_1, TC_Int_2 ) then

         --    function To_Chars_Ptr (Item      : in char_array_access;
         --                           Nul_Check : in Boolean := False)
         --       return chars_ptr;
         TST_chars_ptr := Strings.To_Chars_Ptr 
                                          (TST_char_array_access, TC_Boolean); 

         --    This one is out of LRM order so that we can "initialize"
         --    TC_char_array for the "in" parameter of the next one
         -- 
         --    function Value (Item : in chars_ptr) return char_array;
         TC_char_array := Strings.Value (TST_chars_ptr);

         --    function New_Char_Array (Chars   : in char_array) 
         --       return chars_ptr;
         TST_chars_ptr := Strings.New_Char_Array (TC_char_array); 

         --    function New_String (Str : in String) return chars_ptr;
         TST_chars_ptr := Strings.New_String ("TEST STRING");

         --    procedure Free (Item : in out chars_ptr);
         Strings.Free (TST_chars_ptr);

         --    function Value (Item : in chars_ptr; Length : in size_t)
         --       return char_array;
         TC_char_array := Strings.Value (TST_chars_ptr, TC_size_t);

         -- Use Report.Comment as a known procedure which takes a string as
         -- a parameter (this does not actually get output)
         --    function Value (Item : in chars_ptr) return String;
         Report.Comment ( Strings.Value (TST_chars_ptr) );

         --    function Value (Item : in chars_ptr; Length : in size_t) 
         --       return String;
         TC_String := Strings.Value (TST_chars_ptr, TC_size_t);

         --    function Strlen (Item : in chars_ptr) return size_t;
         TC_size_t := Strings.Strlen (TST_chars_ptr);

         --    procedure Update (Item   : in chars_ptr;
         --                      Offset : in size_t;
         --                      Chars  : in char_array;
         --                      Check  : in Boolean := True);
         Strings.Update (TST_chars_ptr, TC_size_t, TC_char_array, TC_Boolean);

         --    procedure Update (Item   : in chars_ptr;
         --                      Offset : in size_t;
         --                      Str    : in String;
         --                      Check  : in Boolean := True);
         Strings.Update (TST_chars_ptr, TC_size_t, TC_String, TC_Boolean);

         --    Update_Error : exception;
         raise Strings.Update_Error;
         
      end if;

      if not Report.Equal ( TC_Int_2, TC_Int_1 ) then

         -- This exception is out of LRM presentation order to avoid
         -- compiler warnings about unreachable code
         --    Dereference_Error : exception;
         raise Strings.Dereference_Error;

      end if;

   end;     -- encapsulation

   Report.Result;

end CXB3002;