diff options
author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
---|---|---|
committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/gcc/ada/a-stunau.ads | |
parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
download | toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.gz toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.tar.bz2 toolchain_gcc-af0c51ac87ab2a87caa03fa108f0d164987a2764.zip |
[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/gcc/ada/a-stunau.ads')
-rw-r--r-- | gcc-4.8/gcc/ada/a-stunau.ads | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/ada/a-stunau.ads b/gcc-4.8/gcc/ada/a-stunau.ads new file mode 100644 index 000000000..06cffc589 --- /dev/null +++ b/gcc-4.8/gcc/ada/a-stunau.ads @@ -0,0 +1,77 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 1992-2011, 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); + pragma Suppress_Initialization (Big_String); + -- Type used to obtain string access to given address. Initialization is + -- suppressed, since we never want to have variables of this type, and + -- we never want to attempt initialiazation of virtual variables of this + -- type (e.g. when pragma Normalize_Scalars is used). + + type Big_String_Access is access all Big_String; + for Big_String_Access'Storage_Size use 0; + -- We use this access type to pass a pointer to an area of storage to be + -- accessed as a string. Of course when this pointer is used, it is the + -- responsibility of the accessor to ensure proper bounds. The storage + -- size clause ensures we do not allocate variables of this type. + + 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 : 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; |