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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [ada/] [s-imgenu.adb] - Blame information for rev 847

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1 281 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT RUN-TIME COMPONENTS                         --
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--                                                                          --
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--                      S Y S T E M . I M G _ E N U M                       --
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--                                                                          --
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--                                 B o d y                                  --
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--                                                                          --
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--          Copyright (C) 2000-2009, Free Software Foundation, Inc.         --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
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--                                                                          --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception,   --
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-- version 3.1, as published by the Free Software Foundation.               --
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--                                                                          --
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-- You should have received a copy of the GNU General Public License and    --
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-- a copy of the GCC Runtime Library Exception along with this program;     --
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-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
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-- <http://www.gnu.org/licenses/>.                                          --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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pragma Compiler_Unit;
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with Ada.Unchecked_Conversion;
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package body System.Img_Enum is
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   -------------------------
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   -- Image_Enumeration_8 --
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   -------------------------
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   function Image_Enumeration_8
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     (Pos     : Natural;
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      Names   : String;
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      Indexes : System.Address)
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      return    String
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   is
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      type Natural_8 is range 0 .. 2 ** 7 - 1;
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      type Index_Table is array (Natural) of Natural_8;
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      type Index_Table_Ptr is access Index_Table;
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      function To_Index_Table_Ptr is
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        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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      Start : constant Natural := Natural (IndexesT (Pos));
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      Next  : constant Natural := Natural (IndexesT (Pos + 1));
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      subtype Result_Type is String (1 .. Next - Start);
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      --  We need this result type to force the result to have the
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      --  required lower bound of 1, rather than the slice bounds.
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   begin
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      return Result_Type (Names (Start .. Next - 1));
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   end Image_Enumeration_8;
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   --------------------------
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   -- Image_Enumeration_16 --
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   --------------------------
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   function Image_Enumeration_16
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     (Pos     : Natural;
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      Names   : String;
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      Indexes : System.Address)
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      return    String
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   is
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      type Natural_16 is range 0 .. 2 ** 15 - 1;
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      type Index_Table is array (Natural) of Natural_16;
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      type Index_Table_Ptr is access Index_Table;
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      function To_Index_Table_Ptr is
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        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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      Start : constant Natural := Natural (IndexesT (Pos));
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      Next  : constant Natural := Natural (IndexesT (Pos + 1));
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      subtype Result_Type is String (1 .. Next - Start);
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      --  We need this result type to force the result to have the
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      --  required lower bound of 1, rather than the slice bounds.
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   begin
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      return Result_Type (Names (Start .. Next - 1));
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   end Image_Enumeration_16;
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   --------------------------
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   -- Image_Enumeration_32 --
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   --------------------------
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   function Image_Enumeration_32
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     (Pos     : Natural;
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      Names   : String;
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      Indexes : System.Address)
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      return    String
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   is
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      type Natural_32 is range 0 .. 2 ** 31 - 1;
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      type Index_Table is array (Natural) of Natural_32;
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      type Index_Table_Ptr is access Index_Table;
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      function To_Index_Table_Ptr is
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        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
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      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
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      Start : constant Natural := Natural (IndexesT (Pos));
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      Next  : constant Natural := Natural (IndexesT (Pos + 1));
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      subtype Result_Type is String (1 .. Next - Start);
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      --  We need this result type to force the result to have the
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      --  required lower bound of 1, rather than the slice bounds.
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   begin
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      return Result_Type (Names (Start .. Next - 1));
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   end Image_Enumeration_32;
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end System.Img_Enum;

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