New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45957 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 61 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUNTIME COMPONENTS                          --
+--                                                                          --
+--                       S Y S T E M . W C H _ W T S                        --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision: 1.7 $                              --
+--                                                                          --
+--          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 package contains the routine used to convert wide strings to
+--  strings for use by wide character attributes (value, image etc.) and
+--  also by the numeric IO subpackages of Ada.Text_IO.Wide_Text_IO.
+
+with System.WCh_Con;
+
+package System.WCh_WtS is
+pragma Pure (WCh_WtS);
+
+   function Wide_String_To_String
+     (S    : Wide_String;
+      EM   : System.WCh_Con.WC_Encoding_Method)
+      return String;
+   --  This routine simply takes its argument and converts it to a string,
+   --  using the internal compiler escape sequence convention (defined in
+   --  package Widechar) to translate characters that are out of range
+   --  of type String. In the context of the Wide_Value attribute, the
+   --  argument is the original attribute argument, and the result is used
+   --  in a call to the corresponding Value attribute function. If the method
+   --  for encoding is a shift-in, shift-out convention, then it is assumed
+   --  that normal (non-wide character) mode holds at the start and end of
+   --  the result string. EM indicates the wide character encoding method.
+   --  Note: in the WCEM_Brackets case, we only use the brackets encoding
+   --  for characters greater than 16#FF#.
+
+end System.WCh_WtS;