projects / thirdparty / gcc.git / blame
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1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3084fecd | 3 | -- GNAT RUN-TIME COMPONENTS -- |
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4 | -- -- |
| 5 | -- S Y S T E M . V A L _ I N T -- | |
| 6 | -- -- | |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| cccef051 | 9 | -- Copyright (C) 1992-2023, Free Software Foundation, Inc. -- |
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10 | -- -- |
| 11 | -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 | -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
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14 | -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| 15 | -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
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16 | -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| 17 | -- -- | |
| 18 | -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 | -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 | -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 | -- -- | |
| 22 | -- You should have received a copy of the GNU General Public License and -- | |
| 23 | -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 | -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 | -- <http://www.gnu.org/licenses/>. -- | |
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26 | -- -- |
| 27 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 28 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
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29 | -- -- |
| 30 | ------------------------------------------------------------------------------ | |
| 31 | ||
| 32 | -- This package contains routines for scanning signed Integer values for use | |
| 33 | -- in Text_IO.Integer_IO, and the Value attribute. | |
| 34 | ||
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35 | -- Preconditions in this unit are meant for analysis only, not for run-time |
| 36 | -- checking, so that the expected exceptions are raised. This is enforced by | |
| 37 | -- setting the corresponding assertion policy to Ignore. Postconditions and | |
| 38 | -- contract cases should not be executed at runtime as well, in order not to | |
| 39 | -- slow down the execution of these functions. | |
| 40 | ||
| 41 | pragma Assertion_Policy (Pre => Ignore, | |
| 42 | Post => Ignore, | |
| 43 | Contract_Cases => Ignore, | |
| 44 | Ghost => Ignore, | |
| 45 | Subprogram_Variant => Ignore); | |
| 46 | ||
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47 | with System.Unsigned_Types; |
| 48 | with System.Val_Uns; | |
| 49 | with System.Value_I; | |
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50 | with System.Vs_Int; |
| 51 | with System.Vs_Uns; | |
| cb7584a4 | 52 | |
| 336ea8f2 | 53 | package System.Val_Int with SPARK_Mode is |
| ca305a84 | 54 | pragma Preelaborate; |
| cacbc350 | 55 | |
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56 | subtype Unsigned is Unsigned_Types.Unsigned; |
| 57 | ||
| 336ea8f2 | 58 | package Impl is new Value_I |
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59 | (Int => Integer, |
| 60 | Uns => Unsigned, | |
| 61 | Scan_Raw_Unsigned => Val_Uns.Scan_Raw_Unsigned, | |
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62 | U_Spec => System.Vs_Uns.Spec, |
| 63 | Spec => System.Vs_Int.Spec); | |
| cb7584a4 | 64 | |
| 649b3efa | 65 | procedure Scan_Integer |
| 9de61fcb | 66 | (Str : String; |
| d90e94c7 | 67 | Ptr : not null access Integer; |
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68 | Max : Integer; |
| 69 | Res : out Integer) | |
| cb7584a4 | 70 | renames Impl.Scan_Integer; |
| cacbc350 | 71 | |
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72 | function Value_Integer (Str : String) return Integer |
| 73 | renames Impl.Value_Integer; | |
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74 | |
| 75 | end System.Val_Int; |