cxa4015.a

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-- CXA4015.A
--
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--     released technical data and computer software in whole or in part, in 
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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_Fixed
--      are available, and that they produce correct results.  Specifically, 
--      check the subprograms Count, Find_Token, Index, Index_Non_Blank, and
--      Move.
--      
-- TEST DESCRIPTION:
--      This test, when combined with tests CXA4013,14,16 will provide 
--      coverage of the functionality found in Ada.Strings.Wide_Fixed.  
--      This test contains many small, specific test cases, situations that 
--      although common in user environments, are often difficult to generate 
--      in large numbers in a application-based test.
--
--       
-- CHANGE HISTORY:
--      06 Dec 94   SAIC    ACVC 2.0
--      02 Nov 95   SAIC    Corrected various accesssibility problems and
--                          expected result strings for ACVC 2.0.1.
--
--!

package CXA40150 is

   -- Wide Character mapping function defined for use with specific 
   -- versions of functions Index and Count.

   function AK_to_ZQ_Mapping (From : Wide_Character) return Wide_Character;

end CXA40150;

package body CXA40150 is

   function AK_to_ZQ_Mapping (From : Wide_Character) 
     return Wide_Character is
   begin
      if From = 'a' then
         return 'z';
      elsif From = 'k' then
         return 'q';
      else
         return From;
      end if;
   end AK_to_ZQ_Mapping;

end CXA40150;


with CXA40150;
with Report;
with Ada.Strings;
with Ada.Strings.Wide_Fixed;
with Ada.Strings.Wide_Maps;

procedure CXA4015 is
begin

   Report.Test("CXA4015", "Check that the subprograms defined in "         &
                          "package Ada.Strings.Wide_Fixed are available, " &
                          "and that they produce correct results");


   Test_Block:
   declare

      use CXA40150;

      package ASF  renames Ada.Strings.Wide_Fixed;
      package Maps renames Ada.Strings.Wide_Maps;

      Result_String  : Wide_String(1..10) := 
                          (others => Ada.Strings.Wide_Space);

      Source_String1 : Wide_String(1..5)  := "abcde";  -- odd len Wide_String
      Source_String2 : Wide_String(1..6)  := "abcdef"; -- even len Wide_String
      Source_String3 : Wide_String(1..12) := "abcdefghijkl";   
      Source_String4 : Wide_String(1..12) := "abcdefghij  "; -- last 2 ch pad
      Source_String5 : Wide_String(1..12) := "  cdefghijkl"; -- first 2 ch pad
      Source_String6 : Wide_String(1..12) := "abcdefabcdef";   
      
      Location       : Natural := 0;
      Slice_Start    : Positive;
      Slice_End,
      Slice_Count    : Natural := 0;

      CD_Set         : Maps.Wide_Character_Set := Maps.To_Set("cd");  
      ABCD_Set       : Maps.Wide_Character_Set := Maps.To_Set("abcd");
      A_to_F_Set     : Maps.Wide_Character_Set := Maps.To_Set("abcdef");
                  
      CD_to_XY_Map   : Maps.Wide_Character_Mapping :=
                         Maps.To_Mapping(From => "cd",  To => "xy");


      -- Access-to-Subprogram object defined for use with specific versions of 
      -- functions Index and Count.
      
      Map_Ptr : Maps.Wide_Character_Mapping_Function := 
                  AK_to_ZQ_Mapping'Access;


   begin


      -- Procedure Move
      -- Evaluate the Procedure Move with various combinations of
      -- parameters.

      -- Justify = Left (default case)

      ASF.Move(Source => Source_String1,       -- "abcde"
               Target => Result_String);
      
      if Result_String /= "abcde     " then
         Report.Failed("Incorrect result from Move with Justify = Left");
      end if;
 
      -- Justify = Right
 
      ASF.Move(Source  => Source_String2,      -- "abcdef"
               Target  => Result_String,
               Drop    => Ada.Strings.Error,
               Justify => Ada.Strings.Right);

      if Result_String /= "    abcdef" then
         Report.Failed("Incorrect result from Move with Justify = Right");
      end if;

      -- Justify = Center (two cases, odd and even pad lengths)
 
      ASF.Move(Source_String1,                 -- "abcde"
               Result_String,
               Ada.Strings.Error,
               Ada.Strings.Center,
               'x');                           -- non-default padding.

      if Result_String /= "xxabcdexxx" then  -- Unequal padding added right
         Report.Failed("Incorrect result from Move with Justify = Center-1");
      end if;

      ASF.Move(Source_String2,                 -- "abcdef"
               Result_String,
               Ada.Strings.Error,
               Ada.Strings.Center);

      if Result_String /= "  abcdef  " then  -- Equal padding added on L/R.
         Report.Failed("Incorrect result from Move with Justify = Center-2");
      end if;

      -- When the source Wide_String is longer than the target Wide_String,
      -- several cases can be examined, with the results depending on the 
      -- value of the Drop parameter.

      -- Drop = Left

      ASF.Move(Source => Source_String3,       -- "abcdefghijkl"
               Target => Result_String,
               Drop   => Ada.Strings.Left);

      if Result_String /= "cdefghijkl" then
         Report.Failed("Incorrect result from Move with Drop = Left");
      end if;

      -- Drop = Right
     
      ASF.Move(Source_String3, Result_String, Ada.Strings.Right);

      if Result_String /= "abcdefghij" then
         Report.Failed("Incorrect result from Move with Drop = Right");
      end if;

      -- Drop = Error
      -- The effect in this case depends on the value of the justify
      -- parameter, and on whether any characters in Source other than 
      -- Pad would fail to be copied.

      -- Drop = Error, Justify = Left, right overflow characters are pad.

      ASF.Move(Source  => Source_String4,      -- "abcdefghij  "
               Target  => Result_String,
               Drop    => Ada.Strings.Error,
               Justify => Ada.Strings.Left);

      if not(Result_String = "abcdefghij") then  -- leftmost 10 characters
          Report.Failed("Incorrect result from Move with Drop = Error - 1");
      end if;

      -- Drop = Error, Justify = Right, left overflow characters are pad.

      ASF.Move(Source_String5,                 -- "  cdefghijkl"
               Result_String, 
               Ada.Strings.Error, 
               Ada.Strings.Right);

      if Result_String /= "cdefghijkl" then  -- rightmost 10 characters
         Report.Failed("Incorrect result from Move with Drop = Error - 2");
      end if;

      -- In other cases of Drop=Error, Length_Error is propagated, such as:

      begin

         ASF.Move(Source_String3,     -- 12 characters, no Pad.
                  Result_String,      -- 10 characters
                  Ada.Strings.Error,  
                  Ada.Strings.Left);  

         Report.Failed("Length_Error not raised by Move - 1");

      exception
         when Ada.Strings.Length_Error => null;   -- OK
         when others => 
            Report.Failed("Incorrect exception raised by Move - 1");
      end;



      -- Function Index
      -- (Other usage examples of this function found in CXA4013-14.)
      -- Check when the pattern is not found in the source.

      if ASF.Index("abcdef", "gh")       /= 0 or
         ASF.Index("abcde",  "abcdef")   /= 0 or  -- pattern > source
         ASF.Index("xyz", 
                   "abcde", 
                   Ada.Strings.Backward) /= 0 or
         ASF.Index("",      "ab")        /= 0 or  -- null source Wide_String.
         ASF.Index("abcde", "  ")        /= 0     -- blank pattern.
      then
         Report.Failed("Incorrect result from Index, no pattern match");
      end if;

      -- Check that Pattern_Error is raised when the pattern is the 
      -- null Wide_String.
      begin
         Location := ASF.Index(Source_String6,    -- "abcdefabcdef"
                               "",                -- null pattern Wide_String.
                               Ada.Strings.Forward);
         Report.Failed("Pattern_Error not raised by Index");
      exception
         when Ada.Strings.Pattern_Error => null;  -- OK, expected exception.
         when others                    =>
           Report.Failed("Incorrect exception raised by Index, null pattern");
      end;

      -- Use the search direction "backward" to locate the particular
      -- pattern within the source Wide_String.

      Location := ASF.Index(Source_String6,         -- "abcdefabcdef"
                            "de",                   -- slice 4..5, 10..11
                            Ada.Strings.Backward);  -- search from right end.

      if Location /= 10  then
         Report.Failed("Incorrect result from Index going Backward");
      end if;



      -- Function Index
      -- Use the version of Index that takes a Wide_Character_Mapping_Function
      -- parameter.
      -- Use the search directions Forward and Backward to locate the 
      -- particular pattern wide string within the source wide string.
      
      Location := ASF.Index("akzqefakzqef",
                            "qzq",                  -- slice 8..10
                            Ada.Strings.Backward,
                            Map_Ptr);      -- perform 'a' to 'z', 'k' to 'q'