------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUNTIME COMPONENTS                          --
--                                                                          --
--             A D A . S T R I N G S . W I D E _ B O U N D E D              --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--                            $Revision: 1.1 $                              --
--                                                                          --
--           Copyright (c) 1992,1993,1994 NYU, All Rights Reserved          --
--                                                                          --
-- This specification is adapted from the Ada Reference Manual for use with --
-- GNAT.  In accordance with the copyright of that document, you can freely --
-- copy and modify this specification,  provided that if you redistribute a --
-- modified version,  any changes that you have made are clearly indicated. --
--                                                                          --
------------------------------------------------------------------------------


with Ada.Strings.Wide_Maps;

package Ada.Strings.Wide_Bounded is
pragma Preelaborate (Wide_Bounded);

   generic
      Max : Positive;
      --  Maximum length of a Bounded_Wide_String

   package Generic_Bounded_Length is

      Max_Length : constant Positive := Max;

      type Bounded_Wide_String is private;

      Null_Bounded_Wide_String : constant Bounded_Wide_String;

      subtype Length_Range is Natural range 0 .. Max_Length;

      function Length (Source : in Bounded_Wide_String) return Length_Range;

      --------------------------------------------------------
      -- Conversion, Concatenation, and Selection Functions --
      --------------------------------------------------------

      function To_Bounded_Wide_String
        (Source : in Wide_String;
         Drop   : in Truncation := Error)
         return   Bounded_Wide_String;

      function To_Wide_String
        (Source : in Bounded_Wide_String)
         return   Wide_String;

      function Append
        (Left, Right : in Bounded_Wide_String;
         Drop        : in Truncation  := Error)
         return        Bounded_Wide_String;

      function Append
        (Left  : in Bounded_Wide_String;
         Right : in Wide_String;
         Drop  : in Truncation := Error)
         return  Bounded_Wide_String;

      function Append
        (Left  : in Wide_String;
         Right : in Bounded_Wide_String;
         Drop  : in Truncation := Error)
         return  Bounded_Wide_String;

      function Append
        (Left  : in Bounded_Wide_String;
         Right : in Wide_Character;
         Drop  : in Truncation := Error)
         return  Bounded_Wide_String;

      function Append
        (Left  : in Wide_Character;
         Right : in Bounded_Wide_String;
         Drop  : in Truncation := Error)
         return  Bounded_Wide_String;

      procedure Append
        (Source   : in out Bounded_Wide_String;
         New_Item : in Bounded_Wide_String;
         Drop     : in Truncation  := Error);

      procedure Append
        (Source   : in out Bounded_Wide_String;
         New_Item : in Wide_String;
         Drop     : in Truncation  := Error);

      procedure Append
        (Source   : in out Bounded_Wide_String;
         New_Item : in Wide_Character;
         Drop     : in Truncation  := Error);

      function "&"
        (Left, Right : in Bounded_Wide_String)
         return        Bounded_Wide_String;

      function "&"
        (Left  : in Bounded_Wide_String;
         Right : in Wide_String)
         return  Bounded_Wide_String;

      function "&"
        (Left  : in Wide_String;
         Right : in Bounded_Wide_String)
         return  Bounded_Wide_String;

      function "&"
        (Left  : in Bounded_Wide_String;
         Right : in Wide_Character)
         return  Bounded_Wide_String;

      function "&"
        (Left  : in Wide_Character;
         Right : in Bounded_Wide_String)
         return  Bounded_Wide_String;

      function Element
        (Source : in Bounded_Wide_String;
         Index  : in Positive)
         return   Wide_Character;

      procedure Replace_Element
        (Source : in out Bounded_Wide_String;
         Index  : in Positive;
         By     : in Wide_Character);

      function Slice
        (Source : in Bounded_Wide_String;
         Low    : in Positive;
         High   : in Natural)
         return   Wide_String;

      function "="
        (Left  : in Bounded_Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function "="
        (Left  : in Bounded_Wide_String;
         Right : in Wide_String)
         return  Boolean;

      function "="
        (Left  : in Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function "<"
        (Left  : in Bounded_Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function "<"
        (Left  : in Bounded_Wide_String;
         Right : in Wide_String)
         return  Boolean;

      function "<"
        (Left  : in Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function "<="
        (Left  : in Bounded_Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function "<="
        (Left  : in Bounded_Wide_String;
         Right : in Wide_String)
         return  Boolean;

      function "<="
        (Left  : in Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function ">"
        (Left  : in Bounded_Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function ">"
        (Left  : in Bounded_Wide_String;
         Right : in Wide_String)
         return  Boolean;

      function ">"
        (Left  : in Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function ">="
        (Left  : in Bounded_Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      function ">="
        (Left  : in Bounded_Wide_String;
         Right : in Wide_String)
         return  Boolean;

      function ">="
        (Left  : in Wide_String;
         Right : in Bounded_Wide_String)
         return  Boolean;

      ----------------------
      -- Search Functions --
      ----------------------

      function Index
        (Source  : in Bounded_Wide_String;
         Pattern : in Wide_String;
         Going   : in Direction := Forward;
         Mapping : in Wide_Maps.Wide_Character_Mapping := Wide_Maps.Identity)
         return    Natural;

      function Index
        (Source  : in Bounded_Wide_String;
         Pattern : in Wide_String;
         Going   : in Direction := Forward;
         Mapping : in Wide_Maps.Wide_Character_Mapping_Function)
         return    Natural;

      function Index
        (Source : in Bounded_Wide_String;
         Set    : in Wide_Maps.Wide_Character_Set;
         Test   : in Membership := Inside;
         Going  : in Direction  := Forward)
         return   Natural;

      function Index_Non_Blank
        (Source : in Bounded_Wide_String;
         Going  : in Direction := Forward)
         return   Natural;

      function Count
        (Source  : in Bounded_Wide_String;
         Pattern : in Wide_String;
         Mapping : in Wide_Maps.Wide_Character_Mapping := Wide_Maps.Identity)
         return    Natural;

      function Count
        (Source  : in Bounded_Wide_String;
         Pattern : in Wide_String;
         Mapping : in Wide_Maps.Wide_Character_Mapping_Function)
         return    Natural;

      function Count
        (Source : in Bounded_Wide_String;
         Set    : in Wide_Maps.Wide_Character_Set)
         return   Natural;

      procedure Find_Token
        (Source : in Bounded_Wide_String;
         Set    : in Wide_Maps.Wide_Character_Set;
         Test   : in Membership;
         First  : out Positive;
         Last   : out Natural);

      ------------------------------------
      -- Wide_String Translation Subprograms --
      ------------------------------------

      function Translate
        (Source   : in Bounded_Wide_String;
         Mapping  : in Wide_Maps.Wide_Character_Mapping)
         return     Bounded_Wide_String;

      procedure Translate
        (Source   : in out Bounded_Wide_String;
         Mapping  : in Wide_Maps.Wide_Character_Mapping);

      function Translate
        (Source  : in Bounded_Wide_String;
         Mapping : in Wide_Maps.Wide_Character_Mapping_Function)
         return    Bounded_Wide_String;

      procedure Translate
        (Source  : in out Bounded_Wide_String;
         Mapping : in Wide_Maps.Wide_Character_Mapping_Function);

      ---------------------------------------
      -- Wide_String Transformation Subprograms --
      ---------------------------------------

      function Replace_Slice
        (Source   : in Bounded_Wide_String;
         Low      : in Positive;
         High     : in Natural;
         By       : in Wide_String;
         Drop     : in Truncation := Error)
         return     Bounded_Wide_String;

      procedure Replace_Slice
        (Source   : in out Bounded_Wide_String;
         Low      : in Positive;
         High     : in Natural;
         By       : in Wide_String;
         Drop     : in Truncation := Error);

      function Insert
        (Source   : in Bounded_Wide_String;
         Before   : in Positive;
         New_Item : in Wide_String;
         Drop     : in Truncation := Error)
         return     Bounded_Wide_String;

      procedure Insert
        (Source   : in out Bounded_Wide_String;
         Before   : in Positive;
         New_Item : in Wide_String;
         Drop     : in Truncation := Error);

      function Overwrite
        (Source    : in Bounded_Wide_String;
         Position  : in Positive;
         New_Item  : in Wide_String;
         Drop      : in Truncation := Error)
         return      Bounded_Wide_String;

      procedure Overwrite
        (Source    : in out Bounded_Wide_String;
         Position  : in Positive;
         New_Item  : in Wide_String;
         Drop      : in Truncation := Error);

      function Delete
        (Source  : in Bounded_Wide_String;
         From    : in Positive;
         Through : in Natural)
         return    Bounded_Wide_String;

      procedure Delete
        (Source  : in out Bounded_Wide_String;
         From    : in Positive;
         Through : in Natural);

      ---------------------------------
      -- Wide_String Selector Subprograms --
      ---------------------------------

      function Trim
        (Source : in Bounded_Wide_String;
         Side   : in Trim_End)
         return   Bounded_Wide_String;

      procedure Trim
        (Source : in out Bounded_Wide_String;
         Side   : in Trim_End);

      function Trim
        (Source  : in Bounded_Wide_String;
          Left   : in Wide_Maps.Wide_Character_Set;
          Right  : in Wide_Maps.Wide_Character_Set)
          return   Bounded_Wide_String;

      procedure Trim
        (Source : in out Bounded_Wide_String;
         Left   : in Wide_Maps.Wide_Character_Set;
         Right  : in Wide_Maps.Wide_Character_Set);

      function Head
        (Source : in Bounded_Wide_String;
         Count  : in Natural;
         Pad    : in Wide_Character := Wide_Space;
         Drop   : in Truncation := Error)
         return   Bounded_Wide_String;

      procedure Head
        (Source : in out Bounded_Wide_String;
         Count  : in Natural;
         Pad    : in Wide_Character  := Wide_Space;
         Drop   : in Truncation := Error);

      function Tail
        (Source : in Bounded_Wide_String;
         Count  : in Natural;
         Pad    : in Wide_Character  := Wide_Space;
         Drop   : in Truncation := Error)
         return Bounded_Wide_String;

      procedure Tail
        (Source : in out Bounded_Wide_String;
         Count  : in Natural;
         Pad    : in Wide_Character  := Wide_Space;
         Drop   : in Truncation := Error);

      ------------------------------------
      -- Wide_String Constructor Subprograms --
      ------------------------------------

      function "*"
        (Left  : in Natural;
         Right : in Wide_Character)
         return  Bounded_Wide_String;

      function "*"
        (Left  : in Natural;
         Right : in Wide_String)
         return  Bounded_Wide_String;

      function "*"
        (Left  : in Natural;
         Right : in Bounded_Wide_String)
         return  Bounded_Wide_String;

      function Replicate
        (Count : in Natural;
         Item  : in Wide_Character;
         Drop  : in Truncation := Error)
         return  Bounded_Wide_String;

      function Replicate
        (Count : in Natural;
         Item  : in Wide_String;
         Drop  : in Truncation := Error)
         return  Bounded_Wide_String;

      function Replicate
        (Count : in Natural;
         Item  : in Bounded_Wide_String;
         Drop  : in Truncation := Error)
         return  Bounded_Wide_String;

   private
      Wide_NUL : constant Wide_Character := Wide_Character'Val (0);

      type Bounded_Wide_String is record
         Length : Length_Range;
         Data   : Wide_String (1 .. Max_Length);
      end record;

      Null_Bounded_Wide_String : constant Bounded_Wide_String :=
               (Length => 0, Data => (1 .. Max_Length => Wide_NUL));

      --  Pragma Inline declarations (GNAT specific additions)

      pragma Inline ("=");
      pragma Inline ("<");
      pragma Inline ("<=");
      pragma Inline (">");
      pragma Inline (">=");
      pragma Inline ("&");
      pragma Inline (Count);
      pragma Inline (Element);
      pragma Inline (Find_Token);
      pragma Inline (Index);
      pragma Inline (Index_Non_Blank);
      pragma Inline (Length);
      pragma Inline (Replace_Element);
      pragma Inline (Slice);
      pragma Inline (To_Bounded_Wide_String);
      pragma Inline (To_Wide_String);

   end Generic_Bounded_Length;

end Ada.Strings.Wide_Bounded;
