-- CXA4018.A
--
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--
--                                    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 subprograms defined in package 
--      Ada.Strings.Wide_Bounded are available, and that they produce 
--      correct results. Specifically, check the subprograms Append, 
--      Count, Element, Find_Token, Head, Index_Non_Blank, Replace_Element, 
--      Replicate, Tail, To_Bounded_Wide_String, "&", ">", "<", ">=", "<=", 
--      and "*".
--      
-- TEST DESCRIPTION:
--      This test, when taken in conjunction with test CXA40[17,19,20], will 
--      constitute a test of all the functionality contained in package
--      Ada.Strings.Wide_Bounded.  This test uses a variety of the
--      subprograms defined in the wide bounded string package in ways typical
--      of common usage.  Different combinations of available subprograms
--      are used to accomplish similar wide bounded string processing goals.
--
--      
-- CHANGE HISTORY:
--      06 Dec 94   SAIC    ACVC 2.0
--      22 Dec 94   SAIC    Changed obsolete constant to Strings.Wide_Space.
--      06 Nov 95   SAIC    Corrected evaluation string used in Head/Tail
--                          subtests for ACVC 2.0.1.
--
--!

with Ada.Strings;
with Ada.Strings.Wide_Bounded;
with Ada.Characters.Handling;
with Ada.Strings.Wide_Maps;
with Report;

procedure CXA4018 is

   -- The following two functions are used to translate character and string
   -- values to "Wide" values.  They will be applied to all the Wide_Bounded
   -- subprogram parameters to simulate the use of Wide_Characters and 
   -- Wide_Strings in actual practice. Blanks are translated to Wide_Character
   -- blanks and all other characters are translated into Wide_Characters with
   -- position values 256 greater than their (narrow) character position
   -- values.

   function Translate (Ch : Character) return Wide_Character is
      C : Character := Ch;
   begin
      if Ch = ' ' then
         return Ada.Characters.Handling.To_Wide_Character(C);
      else
         return Wide_Character'Val(Character'Pos(Ch) + 
                                   Character'Pos(Character'Last) + 1);
      end if;
   end Translate;

   function Translate (Str : String) return Wide_String is
      WS : Wide_String(Str'First..Str'Last);
   begin
      for i in Str'First..Str'Last loop
         WS(i) := Translate(Str(i));
      end loop;
      return WS;
   end Translate;


begin

   Report.Test ("CXA4018", "Check that the subprograms defined in package " &
                           "Ada.Strings.Wide_Bounded are available, and "   &
                           "that they produce correct results");

   Test_Block:
   declare

      package BS80 is new Ada.Strings.Wide_Bounded.Generic_Bounded_Length(80);
      use type BS80.Bounded_Wide_String;

      Part1 : constant Wide_String     := Translate("Rum");
      Part2 : Wide_Character           := Translate('p');
      Part3 : BS80.Bounded_Wide_String := 
                BS80.To_Bounded_Wide_String(Translate("el"));
      Part4 : Wide_Character           := Translate('s');
      Part5 : BS80.Bounded_Wide_String := 
                BS80.To_Bounded_Wide_String(Translate("tilt"));
      Part6 : Wide_String(1..3)        := Translate("ski");

      Full_Catenate_String,
      Full_Append_String,  
      Constructed_String,   
      Drop_String,
      Replicated_String,     
      Token_String         : BS80.Bounded_Wide_String;

      CharA : Wide_Character := Translate('A');
      CharB : Wide_Character := Translate('B');
      CharC : Wide_Character := Translate('C');
      CharD : Wide_Character := Translate('D');
      CharE : Wide_Character := Translate('E');
      CharF : Wide_Character := Translate('F');

      ABStr : Wide_String(1..15) := Translate("AAAAABBBBBBBBBB");
      StrB  : Wide_String(1..2)  := Translate("BB");
      StrE  : Wide_String(1..2)  := Translate("EE");


   begin

      -- Evaluation of the overloaded forms of the "&" operator.

      Full_Catenate_String := 
        BS80."&"(Part2,                            -- WChar & Bnd WStr
                 BS80."&"(Part3,                   -- Bnd WStr & Bnd WStr
                          BS80."&"(Part4,          -- WChar & Bnd WStr
                                   BS80."&"(Part5, -- Bnd WStr & Bnd WStr
                                            BS80.To_Bounded_Wide_String
                                              (Part6)))));  
                                                 
      Full_Catenate_String := 
        BS80."&"(Part1, Full_Catenate_String);     -- WStr & Bnd WStr
      Full_Catenate_String := 
        BS80."&"(Left  => Full_Catenate_String, 
                 Right => Translate('n'));         -- Bnd WStr & WChar


      -- Evaluation of the overloaded forms of function Append.

      Full_Append_String := 
        BS80.Append(Part2,                               -- WChar,Bnd WStr
          BS80.Append(Part3,                             -- Bnd WStr, Bnd WStr
            BS80.Append(Part4,                           -- WChar,Bnd WStr
              BS80.Append(BS80.To_Wide_String(Part5),    -- WStr,Bnd WStr
                BS80.To_Bounded_Wide_String(Part6)))));

      Full_Append_String := 
        BS80.Append(BS80.To_Bounded_Wide_String(Part1),  -- Bnd WStr, WStr
                    BS80.To_Wide_String(Full_Append_String));

      Full_Append_String := 
        BS80.Append(Left  => Full_Append_String, 
                    Right => Translate('n'));             -- Bnd WStr, WChar


      -- Validate the resulting bounded wide strings.

      if BS80."<"(Full_Catenate_String, Full_Append_String) or
         BS80.">"(Full_Catenate_String, Full_Append_String) or
         not (Full_Catenate_String  = Full_Append_String and
              BS80."<="(Full_Catenate_String, Full_Append_String) and
              BS80.">="(Full_Catenate_String, Full_Append_String))
      then
         Report.Failed
           ("Incorrect results from bounded wide string catenation" &
            " and comparison");
      end if;


      -- Evaluate the overloaded forms of the Constructor function "*" and 
      -- the Replicate function.

      Constructed_String := 
        BS80."*"(2,CharA) &                     -- "AA"
        BS80."*"(2,StrB) &                      -- "AABBBB"
        BS80."*"(3, BS80."*"(2, CharC)) &       -- "AABBBBCCCCCC"
        BS80.Replicate(3, 
                   BS80.Replicate(2, CharD)) &  -- "AABBBBCCCCCCDDDDDD"
        BS80.Replicate(2, StrE) &               -- "AABBBBCCCCCCDDDDDDEEEE"
        BS80.Replicate(2, CharF);               -- "AABBBBCCCCCCDDDDDDEEEEFF"


      -- Use of Function Replicate that involves dropping wide characters.
      -- The attempt to replicate the 15 character wide string six times will
      -- exceed the 80 wide character bound of the wide string.  Therefore, 
      -- the result should be the catenation of 5 copies of the 15 character 
      -- wide string, followed by 5 'A' wide characters (the first five wide 
      -- characters of the 6th replication) with the remaining wide 
      -- characters of the 6th replication dropped.

      Drop_String := 
         BS80.Replicate(Count => 6,                   
                        Item  => ABStr,              -- "AAAAABBBBBBBBBB"
                        Drop  => Ada.Strings.Right); 

      if BS80.Element(Drop_String, 1)  /= Translate('A') or
         BS80.Element(Drop_String, 6)  /= Translate('B') or
         BS80.Element(Drop_String, 76) /= Translate('A') or
         BS80.Element(Drop_String, 80) /= Translate('A') 
      then
         Report.Failed("Incorrect result from Replicate with Drop");
      end if;


      -- Use function Index_Non_Blank in the evaluation of the
      -- Constructed_String.

      if BS80.Index_Non_Blank(Constructed_String, Ada.Strings.Forward)  /=
         BS80.To_Wide_String(Constructed_String)'First                    or
         BS80.Index_Non_Blank(Constructed_String, Ada.Strings.Backward) /=
         BS80.Length(Constructed_String)
      then
         Report.Failed("Incorrect results from constructor functions");
      end if;


      declare

         -- Define wide character set objects for use with the Count function.
         -- Constructed_String = "AABBBBCCCCCCDDDDDDEEEEFF" from above.

         A_Set : Ada.Strings.Wide_Maps.Wide_Character_Set :=
                 Ada.Strings.Wide_Maps.To_Set(BS80.Element(Constructed_String,
                                                           1));
         B_Set : Ada.Strings.Wide_Maps.Wide_Character_Set :=
                 Ada.Strings.Wide_Maps.To_Set(BS80.Element(Constructed_String,
                                                           3));
         C_Set : Ada.Strings.Wide_Maps.Wide_Character_Set :=
                 Ada.Strings.Wide_Maps.To_Set(BS80.Element(Constructed_String,
                                                           7));
         D_Set : Ada.Strings.Wide_Maps.Wide_Character_Set :=
                 Ada.Strings.Wide_Maps.To_Set(BS80.Element(Constructed_String,
                                                           13));
         E_Set : Ada.Strings.Wide_Maps.Wide_Character_Set :=
                 Ada.Strings.Wide_Maps.To_Set(BS80.Element(Constructed_String,
                                                           19));
         F_Set : Ada.Strings.Wide_Maps.Wide_Character_Set :=
                 Ada.Strings.Wide_Maps.To_Set(BS80.Element(Constructed_String,
                                                           23));
         Start : Positive;
         Stop  : Natural  := 0;

      begin

         -- Evaluate the results from function Count by comparing the number
         -- of A's to the number of F's, B's to E's, and C's to D's in the
         -- Constructed_String.  
         -- There should be an equal number of each of the wide characters that 
         -- are being compared (i.e., 2 A's and F's, 4 B's and E's, etc)

         if BS80.Count(Constructed_String, A_Set)      /= 
            BS80.Count(Constructed_String, F_Set)        or
            BS80.Count(Constructed_String, B_Set)      /= 
            BS80.Count(Constructed_String, E_Set)        or
            not (BS80.Count(Constructed_String, C_Set)  =  
                 BS80.Count(Constructed_String, D_Set))  
         then
            Report.Failed("Incorrect result from function Count");
         end if;


         -- Evaluate the functions Head, Tail, and Find_Token.
         -- Create the Token_String from the Constructed_String above.

         Token_String := 
           BS80.Tail(BS80.Head(Constructed_String,  3), 2) &     -- "AB" &
           BS80.Head(BS80.Tail(Constructed_String, 13), 2) &     -- "CD" &
           BS80.Head(BS80.Tail(Constructed_String,  3), 2);      -- "EF"

         if Token_String /= 
            BS80.To_Bounded_Wide_String(Translate("ABCDEF")) then
            Report.Failed("Incorrect result from Catenation of Token_String");
         end if;


         -- Find the starting/ending position of the first A in the 
         -- Token_String (both should be 1, only one A appears in string).
         -- The Function Head uses the default pad character to return a
         -- bounded wide string longer than its input parameter bounded 
         -- wide string.

         BS80.Find_Token(BS80.Head(Token_String, 10),  -- Default pad.
                         A_Set,
                         Ada.Strings.Inside,
                         Start,
                         Stop);

         if Start /= 1 and Stop /= 1 then
            Report.Failed("Incorrect result from Find_Token - 1");
         end if;


         -- Find the starting/ending position of the first non-AB slice in
         -- the "head" five wide characters of Token_String (slice CDE at 
         -- positions 3-5)

         BS80.Find_Token(BS80.Head(Token_String, 5),               -- "ABCDE"
                         Ada.Strings.Wide_Maps."OR"(A_Set, B_Set), -- Set (AB)
                         Ada.Strings.Outside,
                         Start,
                         Stop);

         if Start /= 3 and Stop /= 5 then
            Report.Failed("Incorrect result from Find_Token - 2");
         end if;


         -- Find the starting/ending position of the first CD slice in
         -- the "tail" eight wide characters (including two pad wide 
         -- characters) of Token_String (slice CD at positions 5-6 of 
         -- the tail portion specified)

         BS80.Find_Token(BS80.Tail(Token_String, 8, 
                                   Ada.Strings.Wide_Space), 
                         Ada.Strings.Wide_Maps."OR"(C_Set, D_Set),
                         Ada.Strings.Inside,
                         Start,
                         Stop);

         if Start /= 5 and Stop /= 6 then
            Report.Failed("Incorrect result from Find_Token - 3");
         end if;


         -- Evaluate the Replace_Element function.

         -- Token_String = "ABCDEF"

         BS80.Replace_Element(Token_String, 3, BS80.Element(Token_String,4));

         -- Token_String = "ABDDEF"

         BS80.Replace_Element(Source => Token_String,
                              Index  => 2,
                              By     => BS80.Element(Token_String, 5));

         -- Token_String = "AEDDEF"

         BS80.Replace_Element(Token_String, 
                              1, 
                              BS80.Element(BS80.Tail(Token_String, 2), 2));

         -- Token_String = "FEDDEF"
         -- Evaluate this result.

         if BS80.Element(Token_String, 
                         BS80.To_Wide_String(Token_String)'First)  /=
            BS80.Element(Token_String, 
                         BS80.To_Wide_String(Token_String)'Last)     or
            BS80.Count(Token_String, D_Set)                        /=
            BS80.Count(Token_String, E_Set)                          or
            BS80.Index_Non_Blank(BS80.Head(Token_String,6))        /=
            BS80.Index_Non_Blank(BS80.Tail(Token_String,6))          or
            BS80.Head(Token_String, 1)                             /=
            BS80.Tail(Token_String, 1)
         then
            Report.Failed("Incorrect result from operations in combination");
         end if;

      end;

   exception
      when others => Report.Failed ("Exception raised in Test_Block");
   end Test_Block;


   Report.Result;

end CXA4018;