1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- A D A . S T R I N G S . W I D E _ W I D E _ U N B O U N D E D . A U X -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2009, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32-- This child package of Ada.Strings.Wide_Wide_Unbounded provides some 33-- specialized access functions which are intended to allow more efficient 34-- use of the facilities of Ada.Strings.Wide_Wide_Unbounded, particularly by 35-- other layered utilities. 36 37package Ada.Strings.Wide_Wide_Unbounded.Aux is 38 pragma Preelaborate; 39 40 subtype Big_Wide_Wide_String is Wide_Wide_String (Positive); 41 type Big_Wide_Wide_String_Access is access all Big_Wide_Wide_String; 42 43 procedure Get_Wide_Wide_String 44 (U : Unbounded_Wide_Wide_String; 45 S : out Big_Wide_Wide_String_Access; 46 L : out Natural); 47 pragma Inline (Get_Wide_Wide_String); 48 -- This procedure returns the internal string pointer used in the 49 -- representation of an unbounded string as well as the actual current 50 -- length (which may be less than S.all'Length because in general there 51 -- can be extra space assigned). The characters of this string may be 52 -- not be modified via the returned pointer, and are valid only as 53 -- long as the original unbounded string is not accessed or modified. 54 -- 55 -- This procedure is more efficient than the use of To_Wide_Wide_String 56 -- since it avoids the need to copy the string. The lower bound of the 57 -- referenced string returned by this call is always one, so the actual 58 -- string data is always accessible as S (1 .. L). 59 60 procedure Set_Wide_Wide_String 61 (UP : out Unbounded_Wide_Wide_String; 62 S : Wide_Wide_String) 63 renames Set_Unbounded_Wide_Wide_String; 64 -- This function sets the string contents of the referenced unbounded 65 -- string to the given string value. It is significantly more efficient 66 -- than the use of To_Unbounded_Wide_Wide_String with an assignment, since 67 -- it avoids the necessity of messing with finalization chains. The lower 68 -- bound of the string S is not required to be one. 69 70 procedure Set_Wide_Wide_String 71 (UP : in out Unbounded_Wide_Wide_String; 72 S : Wide_Wide_String_Access); 73 pragma Inline (Set_Wide_Wide_String); 74 -- This version of Set_Wide_Wide_String takes a string access value, rather 75 -- than string. The lower bound of the string value is required to be one, 76 -- and this requirement is not checked. 77 78end Ada.Strings.Wide_Wide_Unbounded.Aux; 79