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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [gcc/] [ada/] [s-valcha.adb] - Rev 593
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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . V A L _ C H A R -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2009, 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/>. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with System.Val_Util; use System.Val_Util; package body System.Val_Char is --------------------- -- Value_Character -- --------------------- function Value_Character (Str : String) return Character is F : Natural; L : Natural; S : String (Str'Range) := Str; begin Normalize_String (S, F, L); -- Accept any single character enclosed in quotes if L - F = 2 and then S (F) = ''' and then S (L) = ''' then return Character'Val (Character'Pos (S (F + 1))); -- Check control character cases else for C in Character'Val (16#00#) .. Character'Val (16#1F#) loop if S (F .. L) = Character'Image (C) then return C; end if; end loop; for C in Character'Val (16#7F#) .. Character'Val (16#9F#) loop if S (F .. L) = Character'Image (C) then return C; end if; end loop; raise Constraint_Error; end if; end Value_Character; end System.Val_Char;
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