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Diffstat (limited to 'gcc/ada/a-stunau.ads')
| -rw-r--r-- | gcc/ada/a-stunau.ads | 72 |
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 00000000000..06c986c2d09 --- /dev/null +++ b/gcc/ada/a-stunau.ads @@ -0,0 +1,72 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUNTIME 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 -- +-- -- +-- $Revision: 1.3 $ -- +-- -- +-- Copyright (C) 1992-1998, 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 2, 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +-- 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.Patterns). + +package Ada.Strings.Unbounded.Aux is +pragma Preelaborate (Aux); + + function Get_String (U : Unbounded_String) return String_Access; + pragma Inline (Get_String); + -- This function returns the internal string pointer used in the + -- representation of an unbounded string. There is no copy involved, + -- so the value obtained references the same string as the original + -- unbounded string. The characters of this string may not be modified + -- via the returned pointer, and are valid only as long as the original + -- unbounded string is not modified. Violating either of these two + -- rules results in erroneous execution. + -- + -- This function 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. + + procedure Set_String (UP : in out Unbounded_String; S : String); + pragma Inline (Set_String); + -- This function sets the string contents of the referenced unbounded + -- string to the given string value. It is significantly more efficient + -- than the use of To_Unbounded_String with an assignment, since it + -- avoids the necessity of messing with finalization chains. The lower + -- bound of the string S is not required to be one. + + procedure Set_String (UP : in out Unbounded_String; S : String_Access); + pragma Inline (Set_String); + -- This version of Set_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; |