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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [a-timoau.adb] - Blame information for rev 706

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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT RUN-TIME COMPONENTS                         --
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--                                                                          --
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--              A D A . T E X T _ I O . M O D U L A R  _ A U X              --
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--                                                                          --
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--                                 B o d y                                  --
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--                                                                          --
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--          Copyright (C) 1992-2009, 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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with Ada.Text_IO.Generic_Aux; use Ada.Text_IO.Generic_Aux;
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with System.Img_BIU; use System.Img_BIU;
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with System.Img_Uns; use System.Img_Uns;
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with System.Img_LLB; use System.Img_LLB;
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with System.Img_LLU; use System.Img_LLU;
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with System.Img_LLW; use System.Img_LLW;
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with System.Img_WIU; use System.Img_WIU;
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with System.Val_Uns; use System.Val_Uns;
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with System.Val_LLU; use System.Val_LLU;
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package body Ada.Text_IO.Modular_Aux is
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   use System.Unsigned_Types;
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   -----------------------
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   -- Local Subprograms --
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   -----------------------
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   procedure Load_Modular
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     (File : File_Type;
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      Buf  : out String;
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      Ptr  : in out Natural);
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   --  This is an auxiliary routine that is used to load an possibly signed
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   --  modular literal value from the input file into Buf, starting at Ptr + 1.
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   --  Ptr is left set to the last character stored.
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   -------------
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   -- Get_LLU --
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   -------------
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   procedure Get_LLU
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     (File  : File_Type;
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      Item  : out Long_Long_Unsigned;
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      Width : Field)
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   is
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      Buf  : String (1 .. Field'Last);
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      Stop : Integer := 0;
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      Ptr  : aliased Integer := 1;
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   begin
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      if Width /= 0 then
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         Load_Width (File, Width, Buf, Stop);
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         String_Skip (Buf, Ptr);
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      else
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         Load_Modular (File, Buf, Stop);
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      end if;
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      Item := Scan_Long_Long_Unsigned (Buf, Ptr'Access, Stop);
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      Check_End_Of_Field (Buf, Stop, Ptr, Width);
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   end Get_LLU;
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   -------------
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   -- Get_Uns --
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   -------------
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   procedure Get_Uns
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     (File  : File_Type;
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      Item  : out Unsigned;
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      Width : Field)
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   is
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      Buf  : String (1 .. Field'Last);
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      Stop : Integer := 0;
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      Ptr  : aliased Integer := 1;
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   begin
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      if Width /= 0 then
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         Load_Width (File, Width, Buf, Stop);
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         String_Skip (Buf, Ptr);
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      else
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         Load_Modular (File, Buf, Stop);
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      end if;
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      Item := Scan_Unsigned (Buf, Ptr'Access, Stop);
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      Check_End_Of_Field (Buf, Stop, Ptr, Width);
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   end Get_Uns;
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   --------------
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   -- Gets_LLU --
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   --------------
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   procedure Gets_LLU
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     (From : String;
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      Item : out Long_Long_Unsigned;
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      Last : out Positive)
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   is
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      Pos : aliased Integer;
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   begin
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      String_Skip (From, Pos);
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      Item := Scan_Long_Long_Unsigned (From, Pos'Access, From'Last);
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      Last := Pos - 1;
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   exception
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      when Constraint_Error =>
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         raise Data_Error;
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   end Gets_LLU;
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   --------------
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   -- Gets_Uns --
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   --------------
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   procedure Gets_Uns
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     (From : String;
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      Item : out Unsigned;
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      Last : out Positive)
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   is
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      Pos : aliased Integer;
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   begin
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      String_Skip (From, Pos);
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      Item := Scan_Unsigned (From, Pos'Access, From'Last);
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      Last := Pos - 1;
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   exception
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      when Constraint_Error =>
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         raise Data_Error;
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   end Gets_Uns;
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   ------------------
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   -- Load_Modular --
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   ------------------
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   procedure Load_Modular
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     (File : File_Type;
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      Buf  : out String;
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      Ptr  : in out Natural)
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   is
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      Hash_Loc : Natural;
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      Loaded   : Boolean;
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   begin
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      Load_Skip (File);
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      --  Note: it is a bit strange to allow a minus sign here, but it seems
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      --  consistent with the general behavior expected by the ACVC tests
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      --  which is to scan past junk and then signal data error, see ACVC
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      --  test CE3704F, case (6), which is for signed integer exponents,
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      --  which seems a similar case.
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      Load (File, Buf, Ptr, '+', '-');
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      Load_Digits (File, Buf, Ptr, Loaded);
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      if Loaded then
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         Load (File, Buf, Ptr, '#', ':', Loaded);
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         if Loaded then
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            Hash_Loc := Ptr;
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            Load_Extended_Digits (File, Buf, Ptr);
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            Load (File, Buf, Ptr, Buf (Hash_Loc));
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         end if;
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         Load (File, Buf, Ptr, 'E', 'e', Loaded);
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         if Loaded then
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            --  Note: it is strange to allow a minus sign, since the syntax
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            --  does not, but that is what ACVC test CE3704F, case (6) wants
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            --  for the signed case, and there seems no good reason to treat
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            --  exponents differently for the signed and unsigned cases.
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            Load (File, Buf, Ptr, '+', '-');
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            Load_Digits (File, Buf, Ptr);
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         end if;
196
      end if;
197
   end Load_Modular;
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   -------------
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   -- Put_LLU --
201
   -------------
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203
   procedure Put_LLU
204
     (File  : File_Type;
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      Item  : Long_Long_Unsigned;
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      Width : Field;
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      Base  : Number_Base)
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   is
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      Buf : String (1 .. Field'Last);
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      Ptr : Natural := 0;
211
 
212
   begin
213
      if Base = 10 and then Width = 0 then
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         Set_Image_Long_Long_Unsigned (Item, Buf, Ptr);
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      elsif Base = 10 then
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         Set_Image_Width_Long_Long_Unsigned (Item, Width, Buf, Ptr);
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      else
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         Set_Image_Based_Long_Long_Unsigned (Item, Base, Width, Buf, Ptr);
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      end if;
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      Put_Item (File, Buf (1 .. Ptr));
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   end Put_LLU;
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   -------------
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   -- Put_Uns --
226
   -------------
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228
   procedure Put_Uns
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     (File  : File_Type;
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      Item  : Unsigned;
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      Width : Field;
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      Base  : Number_Base)
233
   is
234
      Buf : String (1 .. Field'Last);
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      Ptr : Natural := 0;
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237
   begin
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      if Base = 10 and then Width = 0 then
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         Set_Image_Unsigned (Item, Buf, Ptr);
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      elsif Base = 10 then
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         Set_Image_Width_Unsigned (Item, Width, Buf, Ptr);
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      else
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         Set_Image_Based_Unsigned (Item, Base, Width, Buf, Ptr);
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      end if;
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      Put_Item (File, Buf (1 .. Ptr));
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   end Put_Uns;
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   --------------
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   -- Puts_LLU --
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   --------------
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253
   procedure Puts_LLU
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     (To   : out String;
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      Item : Long_Long_Unsigned;
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      Base : Number_Base)
257
   is
258
      Buf : String (1 .. Field'Last);
259
      Ptr : Natural := 0;
260
 
261
   begin
262
      if Base = 10 then
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         Set_Image_Width_Long_Long_Unsigned (Item, To'Length, Buf, Ptr);
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      else
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         Set_Image_Based_Long_Long_Unsigned (Item, Base, To'Length, Buf, Ptr);
266
      end if;
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268
      if Ptr > To'Length then
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         raise Layout_Error;
270
      else
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         To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
272
      end if;
273
   end Puts_LLU;
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275
   --------------
276
   -- Puts_Uns --
277
   --------------
278
 
279
   procedure Puts_Uns
280
     (To   : out String;
281
      Item : Unsigned;
282
      Base : Number_Base)
283
   is
284
      Buf : String (1 .. Field'Last);
285
      Ptr : Natural := 0;
286
 
287
   begin
288
      if Base = 10 then
289
         Set_Image_Width_Unsigned (Item, To'Length, Buf, Ptr);
290
      else
291
         Set_Image_Based_Unsigned (Item, Base, To'Length, Buf, Ptr);
292
      end if;
293
 
294
      if Ptr > To'Length then
295
         raise Layout_Error;
296
      else
297
         To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
298
      end if;
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   end Puts_Uns;
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end Ada.Text_IO.Modular_Aux;

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