| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S Y S T E M . V A L _ U N S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2023, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package contains routines for scanning modular Unsigned |
| -- values for use in Text_IO.Modular_IO, and the Value attribute. |
| |
| -- Preconditions in this unit are meant for analysis only, not for run-time |
| -- checking, so that the expected exceptions are raised. This is enforced by |
| -- setting the corresponding assertion policy to Ignore. Postconditions and |
| -- contract cases should not be executed at runtime as well, in order not to |
| -- slow down the execution of these functions. |
| |
| pragma Assertion_Policy (Pre => Ignore, |
| Post => Ignore, |
| Contract_Cases => Ignore, |
| Ghost => Ignore, |
| Subprogram_Variant => Ignore); |
| |
| with System.Unsigned_Types; |
| with System.Value_U; |
| |
| package System.Val_Uns with SPARK_Mode is |
| pragma Preelaborate; |
| |
| subtype Unsigned is Unsigned_Types.Unsigned; |
| |
| package Impl is new Value_U (Unsigned); |
| |
| procedure Scan_Raw_Unsigned |
| (Str : String; |
| Ptr : not null access Integer; |
| Max : Integer; |
| Res : out Unsigned) |
| renames Impl.Scan_Raw_Unsigned; |
| |
| procedure Scan_Unsigned |
| (Str : String; |
| Ptr : not null access Integer; |
| Max : Integer; |
| Res : out Unsigned) |
| renames Impl.Scan_Unsigned; |
| |
| function Value_Unsigned |
| (Str : String) return Unsigned |
| renames Impl.Value_Unsigned; |
| |
| end System.Val_Uns; |
