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-------------------------------------------------------------------------------
--- --
--- GNAT LIBRARY COMPONENTS --
--- --
--- A D A . S T R I N G S . H A S H _ C A S E _ I N S E N S I T I V E --
--- --
--- B o d y --
--- --
--- Copyright (C) 2004-2009, Free Software Foundation, Inc. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 3, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. --
--- --
--- As a special exception under Section 7 of GPL version 3, you are granted --
--- additional permissions described in the GCC Runtime Library Exception, --
--- version 3.1, as published by the Free Software Foundation. --
--- --
--- You should have received a copy of the GNU General Public License and --
--- a copy of the GCC Runtime Library Exception along with this program; --
--- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
--- <http://www.gnu.org/licenses/>. --
--- --
--- This unit was originally developed by Matthew J Heaney. --
-------------------------------------------------------------------------------
-
-with Ada.Characters.Handling; use Ada.Characters.Handling;
-
--- Note: source of this algorithm: GNAT.HTable.Hash (g-htable.adb)
-
-function Ada.Strings.Hash_Case_Insensitive
- (Key : String) return Containers.Hash_Type
-is
- use Ada.Containers;
-
- Tmp : Hash_Type;
-
- function Rotate_Left
- (Value : Hash_Type;
- Amount : Natural) return Hash_Type;
- pragma Import (Intrinsic, Rotate_Left);
-
-begin
- Tmp := 0;
- for J in Key'Range loop
- Tmp := Rotate_Left (Tmp, 3) + Character'Pos (To_Lower (Key (J)));
- end loop;
-
- return Tmp;
-end Ada.Strings.Hash_Case_Insensitive;