| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME 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) 1992-2014, 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 3, 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. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- 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 : 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 : File_Type; |
| Item : out Long_Long_Unsigned; |
| Width : 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 : File_Type; |
| Item : out Unsigned; |
| Width : 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 : 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 => |
| raise Data_Error; |
| end Gets_LLU; |
| |
| -------------- |
| -- Gets_Uns -- |
| -------------- |
| |
| procedure Gets_Uns |
| (From : 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 => |
| raise Data_Error; |
| end Gets_Uns; |
| |
| ------------------ |
| -- Load_Modular -- |
| ------------------ |
| |
| procedure Load_Modular |
| (File : 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 |
| |
| -- Deal with based case. We recognize either the standard '#' or the |
| -- allowed alternative replacement ':' (see RM J.2(3)). |
| |
| 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 : File_Type; |
| Item : Long_Long_Unsigned; |
| Width : Field; |
| Base : 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 : File_Type; |
| Item : Unsigned; |
| Width : Field; |
| Base : 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 : Long_Long_Unsigned; |
| Base : 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 : Unsigned; |
| Base : 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; |
