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Diffstat (limited to 'gcc/ada/a-stunau.ads')
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1 files changed, 72 insertions, 0 deletions
diff --git a/gcc/ada/a-stunau.ads b/gcc/ada/a-stunau.ads new file mode 100644 index 000000000..8cff44f71 --- /dev/null +++ b/gcc/ada/a-stunau.ads @@ -0,0 +1,72 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . S T R I N G S . U N B O U N D E D . A U X -- +-- -- +-- S p e c -- +-- -- +-- 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. -- +-- -- +------------------------------------------------------------------------------ + +-- This child package of Ada.Strings.Unbounded provides some specialized +-- access functions which are intended to allow more efficient use of the +-- facilities of Ada.Strings.Unbounded, particularly by other layered +-- utilities (such as GNAT.SPITBOL.Patterns). + +package Ada.Strings.Unbounded.Aux is + pragma Preelaborate; + + subtype Big_String is String (1 .. Positive'Last); + type Big_String_Access is access all Big_String; + + procedure Get_String + (U : Unbounded_String; + S : out Big_String_Access; + L : out Natural); + pragma Inline (Get_String); + -- This procedure returns the internal string pointer used in the + -- representation of an unbounded string as well as the actual current + -- length (which may be less than S.all'Length because in general there + -- can be extra space assigned). The characters of this string may be + -- not be modified via the returned pointer, and are valid only as + -- long as the original unbounded string is not accessed or modified. + -- + -- This procedure is much more efficient than the use of To_String + -- since it avoids the need to copy the string. The lower bound of the + -- referenced string returned by this call is always one, so the actual + -- string data is always accessible as S (1 .. L). + + procedure Set_String (UP : out Unbounded_String; S : String) + renames Set_Unbounded_String; + -- This function is simply a renaming of the new Ada 2005 function as shown + -- above. It is provided for historical reasons, but should be removed at + -- this stage??? + + procedure Set_String (UP : in out Unbounded_String; S : String_Access); + pragma Inline (Set_String); + -- This version of Set_Unbounded_String takes a string access value, rather + -- than a string. The lower bound of the string value is required to be + -- one, and this requirement is not checked. + +end Ada.Strings.Unbounded.Aux; |