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Diffstat (limited to 'gcc-4.8.3/gcc/ada/g-crc32.adb')
| -rw-r--r-- | gcc-4.8.3/gcc/ada/g-crc32.adb | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/ada/g-crc32.adb b/gcc-4.8.3/gcc/ada/g-crc32.adb new file mode 100644 index 000000000..14d592a83 --- /dev/null +++ b/gcc-4.8.3/gcc/ada/g-crc32.adb @@ -0,0 +1,85 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT LIBRARY COMPONENTS -- +-- -- +-- G N A T . C R C 3 2 -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 2001-2010, AdaCore -- +-- -- +-- 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/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +with Ada.Unchecked_Conversion; + +package body GNAT.CRC32 is + + ------------ + -- Update -- + ------------ + + procedure Update (C : in out CRC32; Value : String) is + begin + for K in Value'Range loop + Update (C, Value (K)); + end loop; + end Update; + + procedure Update (C : in out CRC32; Value : Ada.Streams.Stream_Element) is + function To_Char is new Ada.Unchecked_Conversion + (Ada.Streams.Stream_Element, Character); + V : constant Character := To_Char (Value); + begin + Update (C, V); + end Update; + + procedure Update + (C : in out CRC32; + Value : Ada.Streams.Stream_Element_Array) + is + begin + for K in Value'Range loop + Update (C, Value (K)); + end loop; + end Update; + + ----------------- + -- Wide_Update -- + ----------------- + + procedure Wide_Update (C : in out CRC32; Value : Wide_Character) is + subtype S2 is String (1 .. 2); + function To_S2 is new Ada.Unchecked_Conversion (Wide_Character, S2); + VS : constant S2 := To_S2 (Value); + begin + Update (C, VS (1)); + Update (C, VS (2)); + end Wide_Update; + + procedure Wide_Update (C : in out CRC32; Value : Wide_String) is + begin + for K in Value'Range loop + Wide_Update (C, Value (K)); + end loop; + end Wide_Update; + +end GNAT.CRC32; |