| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . S T R E A M _ A T T R I B U T E S . X D R -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2021, 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 alternate implementations of the stream attributes |
| -- for elementary types based on the XDR standard. These are the subprograms |
| -- that are directly accessed by occurrences of the stream attributes where |
| -- the type is elementary. |
| |
| -- It is especially useful for exchanging streams between two different |
| -- systems with different basic type representations and endianness. |
| |
| -- We only provide the subprograms for the standard base types. For user |
| -- defined types, the subprogram for the corresponding root type is called |
| -- with an appropriate conversion. |
| |
| package System.Stream_Attributes.XDR is |
| pragma Preelaborate; |
| |
| pragma Suppress (Accessibility_Check, XDR); |
| -- No need to check accessibility on arguments of subprograms |
| |
| --------------------- |
| -- Input Functions -- |
| --------------------- |
| |
| -- Functions for S'Input attribute. These functions are also used for |
| -- S'Read, with the obvious transformation, since the input operation |
| -- is the same for all elementary types (no bounds or discriminants |
| -- are involved). |
| |
| function I_AD (Stream : not null access RST) return Fat_Pointer; |
| function I_AS (Stream : not null access RST) return Thin_Pointer; |
| function I_B (Stream : not null access RST) return Boolean; |
| function I_C (Stream : not null access RST) return Character; |
| function I_F (Stream : not null access RST) return Float; |
| function I_I (Stream : not null access RST) return Integer; |
| function I_I24 (Stream : not null access RST) return Integer_24; |
| function I_LF (Stream : not null access RST) return Long_Float; |
| function I_LI (Stream : not null access RST) return Long_Integer; |
| function I_LLF (Stream : not null access RST) return Long_Long_Float; |
| function I_LLI (Stream : not null access RST) return Long_Long_Integer; |
| function I_LLU (Stream : not null access RST) return UST.Long_Long_Unsigned; |
| function I_LU (Stream : not null access RST) return UST.Long_Unsigned; |
| function I_SF (Stream : not null access RST) return Short_Float; |
| function I_SI (Stream : not null access RST) return Short_Integer; |
| function I_SSI (Stream : not null access RST) return Short_Short_Integer; |
| function I_SSU (Stream : not null access RST) return |
| UST.Short_Short_Unsigned; |
| function I_SU (Stream : not null access RST) return UST.Short_Unsigned; |
| function I_U (Stream : not null access RST) return UST.Unsigned; |
| function I_U24 (Stream : not null access RST) return Unsigned_24; |
| function I_WC (Stream : not null access RST) return Wide_Character; |
| function I_WWC (Stream : not null access RST) return Wide_Wide_Character; |
| |
| ----------------------- |
| -- Output Procedures -- |
| ----------------------- |
| |
| -- Procedures for S'Write attribute. These procedures are also used for |
| -- 'Output, since for elementary types there is no difference between |
| -- 'Write and 'Output because there are no discriminants or bounds to |
| -- be written. |
| |
| procedure W_AD (Stream : not null access RST; Item : Fat_Pointer); |
| procedure W_AS (Stream : not null access RST; Item : Thin_Pointer); |
| procedure W_B (Stream : not null access RST; Item : Boolean); |
| procedure W_C (Stream : not null access RST; Item : Character); |
| procedure W_F (Stream : not null access RST; Item : Float); |
| procedure W_I (Stream : not null access RST; Item : Integer); |
| procedure W_I24 (Stream : not null access RST; Item : Integer_24); |
| procedure W_LF (Stream : not null access RST; Item : Long_Float); |
| procedure W_LI (Stream : not null access RST; Item : Long_Integer); |
| procedure W_LLF (Stream : not null access RST; Item : Long_Long_Float); |
| procedure W_LLI (Stream : not null access RST; Item : Long_Long_Integer); |
| procedure W_LLU (Stream : not null access RST; Item : |
| UST.Long_Long_Unsigned); |
| procedure W_LU (Stream : not null access RST; Item : UST.Long_Unsigned); |
| procedure W_SF (Stream : not null access RST; Item : Short_Float); |
| procedure W_SI (Stream : not null access RST; Item : Short_Integer); |
| procedure W_SSI (Stream : not null access RST; Item : Short_Short_Integer); |
| procedure W_SSU (Stream : not null access RST; Item : |
| UST.Short_Short_Unsigned); |
| procedure W_SU (Stream : not null access RST; Item : UST.Short_Unsigned); |
| procedure W_U (Stream : not null access RST; Item : UST.Unsigned); |
| procedure W_U24 (Stream : not null access RST; Item : Unsigned_24); |
| procedure W_WC (Stream : not null access RST; Item : Wide_Character); |
| procedure W_WWC (Stream : not null access RST; Item : Wide_Wide_Character); |
| |
| end System.Stream_Attributes.XDR; |
