------------------------------------------------------------------------------ -- -- -- GNAT RUNTIME COMPONENTS -- -- -- -- A D A . W I D E _ T E X T _ I O . M O D U L A R _ A U X -- -- -- -- B o d y -- -- -- -- -- -- Copyright (C) 1992-2001 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with Ada.Wide_Text_IO.Generic_Aux; use Ada.Wide_Text_IO.Generic_Aux; with System.Img_BIU; use System.Img_BIU; with System.Img_Uns; use System.Img_Uns; with System.Img_LLB; use System.Img_LLB; with System.Img_LLU; use System.Img_LLU; with System.Img_LLW; use System.Img_LLW; with System.Img_WIU; use System.Img_WIU; with System.Val_Uns; use System.Val_Uns; with System.Val_LLU; use System.Val_LLU; package body Ada.Wide_Text_IO.Modular_Aux is use System.Unsigned_Types; ----------------------- -- Local Subprograms -- ----------------------- procedure Load_Modular (File : in File_Type; Buf : out String; Ptr : in out Natural); -- This is an auxiliary routine that is used to load an possibly signed -- modular literal value from the input file into Buf, starting at Ptr + 1. -- Ptr is left set to the last character stored. ------------- -- Get_LLU -- ------------- procedure Get_LLU (File : in File_Type; Item : out Long_Long_Unsigned; Width : in Field) is Buf : String (1 .. Field'Last); Stop : Integer := 0; Ptr : aliased Integer := 1; begin if Width /= 0 then Load_Width (File, Width, Buf, Stop); String_Skip (Buf, Ptr); else Load_Modular (File, Buf, Stop); end if; Item := Scan_Long_Long_Unsigned (Buf, Ptr'Access, Stop); Check_End_Of_Field (Buf, Stop, Ptr, Width); end Get_LLU; ------------- -- Get_Uns -- ------------- procedure Get_Uns (File : in File_Type; Item : out Unsigned; Width : in Field) is Buf : String (1 .. Field'Last); Stop : Integer := 0; Ptr : aliased Integer := 1; begin if Width /= 0 then Load_Width (File, Width, Buf, Stop); String_Skip (Buf, Ptr); else Load_Modular (File, Buf, Stop); end if; Item := Scan_Unsigned (Buf, Ptr'Access, Stop); Check_End_Of_Field (Buf, Stop, Ptr, Width); end Get_Uns; -------------- -- Gets_LLU -- -------------- procedure Gets_LLU (From : in String; Item : out Long_Long_Unsigned; Last : out Positive) is Pos : aliased Integer; begin String_Skip (From, Pos); Item := Scan_Long_Long_Unsigned (From, Pos'Access, From'Last); Last := Pos - 1; exception when Constraint_Error => Last := Pos - 1; raise Data_Error; end Gets_LLU; -------------- -- Gets_Uns -- -------------- procedure Gets_Uns (From : in String; Item : out Unsigned; Last : out Positive) is Pos : aliased Integer; begin String_Skip (From, Pos); Item := Scan_Unsigned (From, Pos'Access, From'Last); Last := Pos - 1; exception when Constraint_Error => Last := Pos - 1; raise Data_Error; end Gets_Uns; ------------------ -- Load_Modular -- ------------------ procedure Load_Modular (File : in File_Type; Buf : out String; Ptr : in out Natural) is Hash_Loc : Natural; Loaded : Boolean; begin Load_Skip (File); -- Note: it is a bit strange to allow a minus sign here, but it seems -- consistent with the general behavior expected by the ACVC tests -- which is to scan past junk and then signal data error, see ACVC -- test CE3704F, case (6), which is for signed integer exponents, -- which seems a similar case. Load (File, Buf, Ptr, '+', '-'); Load_Digits (File, Buf, Ptr, Loaded); if Loaded then Load (File, Buf, Ptr, '#', ':', Loaded); if Loaded then Hash_Loc := Ptr; Load_Extended_Digits (File, Buf, Ptr); Load (File, Buf, Ptr, Buf (Hash_Loc)); end if; Load (File, Buf, Ptr, 'E', 'e', Loaded); if Loaded then -- Note: it is strange to allow a minus sign, since the syntax -- does not, but that is what ACVC test CE3704F, case (6) wants -- for the signed case, and there seems no good reason to treat -- exponents differently for the signed and unsigned cases. Load (File, Buf, Ptr, '+', '-'); Load_Digits (File, Buf, Ptr); end if; end if; end Load_Modular; ------------- -- Put_LLU -- ------------- procedure Put_LLU (File : in File_Type; Item : in Long_Long_Unsigned; Width : in Field; Base : in Number_Base) is Buf : String (1 .. Field'Last); Ptr : Natural := 0; begin if Base = 10 and then Width = 0 then Set_Image_Long_Long_Unsigned (Item, Buf, Ptr); elsif Base = 10 then Set_Image_Width_Long_Long_Unsigned (Item, Width, Buf, Ptr); else Set_Image_Based_Long_Long_Unsigned (Item, Base, Width, Buf, Ptr); end if; Put_Item (File, Buf (1 .. Ptr)); end Put_LLU; ------------- -- Put_Uns -- ------------- procedure Put_Uns (File : in File_Type; Item : in Unsigned; Width : in Field; Base : in Number_Base) is Buf : String (1 .. Field'Last); Ptr : Natural := 0; begin if Base = 10 and then Width = 0 then Set_Image_Unsigned (Item, Buf, Ptr); elsif Base = 10 then Set_Image_Width_Unsigned (Item, Width, Buf, Ptr); else Set_Image_Based_Unsigned (Item, Base, Width, Buf, Ptr); end if; Put_Item (File, Buf (1 .. Ptr)); end Put_Uns; -------------- -- Puts_LLU -- -------------- procedure Puts_LLU (To : out String; Item : in Long_Long_Unsigned; Base : in Number_Base) is Buf : String (1 .. Field'Last); Ptr : Natural := 0; begin if Base = 10 then Set_Image_Width_Long_Long_Unsigned (Item, To'Length, Buf, Ptr); else Set_Image_Based_Long_Long_Unsigned (Item, Base, To'Length, Buf, Ptr); end if; if Ptr > To'Length then raise Layout_Error; else To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr); end if; end Puts_LLU; -------------- -- Puts_Uns -- -------------- procedure Puts_Uns (To : out String; Item : in Unsigned; Base : in Number_Base) is Buf : String (1 .. Field'Last); Ptr : Natural := 0; begin if Base = 10 then Set_Image_Width_Unsigned (Item, To'Length, Buf, Ptr); else Set_Image_Based_Unsigned (Item, Base, To'Length, Buf, Ptr); end if; if Ptr > To'Length then raise Layout_Error; else To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr); end if; end Puts_Uns; end Ada.Wide_Text_IO.Modular_Aux;