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authorMatthew Heaney <heaney@adacore.com>2006-02-15 10:32:52 +0100
committerArnaud Charlet <charlet@gcc.gnu.org>2006-02-15 10:32:52 +0100
commitffabcde5e102cd7cc8a283ddc89861a727226913 (patch)
tree39a55d293e0dcbbc8992be624d0eb85bc7be0307 /gcc/ada/a-stboha.adb
parent738819cdce8e966e04a3e83d305db2cfa9bdaa75 (diff)
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a-rbtgso.adb, [...]: All explicit raise statements now include an exception message.
2006-02-13 Matthew Heaney <heaney@adacore.com> * a-rbtgso.adb, a-crbtgo.adb, a-crbtgk.adb, a-coorse.adb, a-cohama.adb, a-ciorse.adb, a-cihama.adb, a-cihase.adb, a-cohase.adb: All explicit raise statements now include an exception message. * a-ciormu.ads, a-ciormu.adb, a-coormu.ads, a-coormu.adb (Update_Element_Preserving_Key): renamed op to just Update_Element. Explicit raise statements now include an exception message * a-cihase.ads, a-cohase.ads: Removed comment. * a-stboha.ads, a-stboha.adb, a-stfiha.ads, a-envvar.adb, a-envvar.ads, a-swbwha.ads, a-swbwha.adb, a-swfwha.ads, a-szbzha.ads, a-szbzha.adb, a-szfzha.ads: New files. From-SVN: r111035
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+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- A D A . S T R I N G S . B O U N D E D . H A S H --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 2004-2006 Free Software Foundation, Inc. --
+-- --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the contents of the part following the private keyword. --
+-- --
+-- 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 2, 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. See the GNU General Public License --
+-- for more details. You should have received a copy of the GNU General --
+-- Public License distributed with GNAT; see file COPYING. If not, write --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
+-- --
+-- As a special exception, if other files instantiate generics from this --
+-- unit, or you link this unit with other files to produce an executable, --
+-- this unit does not by itself cause the resulting executable to be --
+-- covered by the GNU General Public License. This exception does not --
+-- however invalidate any other reasons why the executable file might be --
+-- covered by the GNU Public License. --
+-- --
+-- This unit was originally developed by Matthew J Heaney. --
+------------------------------------------------------------------------------
+
+-- Note: source of this algorithm: GNAT.HTable.Hash (g-htable.adb)
+
+function Ada.Strings.Bounded.Hash (Key : Bounded.Bounded_String)
+ return Containers.Hash_Type
+is
+ use Ada.Containers;
+
+ function Rotate_Left
+ (Value : Hash_Type;
+ Amount : Natural) return Hash_Type;
+ pragma Import (Intrinsic, Rotate_Left);
+
+ Tmp : Hash_Type;
+
+begin
+ Tmp := 0;
+ for J in 1 .. Bounded.Length (Key) loop
+ Tmp := Rotate_Left (Tmp, 3) + Character'Pos (Bounded.Element (Key, J));
+ end loop;
+
+ return Tmp;
+end Ada.Strings.Bounded.Hash;