| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- I N T E R F A C E S . C . P O I N T E R S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1993-2011, Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- 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 System.Parameters; |
| |
| generic |
| type Index is (<>); |
| type Element is private; |
| type Element_Array is array (Index range <>) of aliased Element; |
| Default_Terminator : Element; |
| |
| package Interfaces.C.Pointers is |
| pragma Preelaborate; |
| |
| type Pointer is access all Element; |
| for Pointer'Size use System.Parameters.ptr_bits; |
| |
| pragma No_Strict_Aliasing (Pointer); |
| -- We turn off any strict aliasing assumptions for the pointer type, |
| -- since it is possible to create "improperly" aliased values. |
| |
| function Value |
| (Ref : Pointer; |
| Terminator : Element := Default_Terminator) return Element_Array; |
| |
| function Value |
| (Ref : Pointer; |
| Length : ptrdiff_t) return Element_Array; |
| |
| Pointer_Error : exception; |
| |
| -------------------------------- |
| -- C-style Pointer Arithmetic -- |
| -------------------------------- |
| |
| function "+" (Left : Pointer; Right : ptrdiff_t) return Pointer; |
| function "+" (Left : ptrdiff_t; Right : Pointer) return Pointer; |
| function "-" (Left : Pointer; Right : ptrdiff_t) return Pointer; |
| function "-" (Left : Pointer; Right : Pointer) return ptrdiff_t; |
| |
| procedure Increment (Ref : in out Pointer); |
| procedure Decrement (Ref : in out Pointer); |
| |
| pragma Convention (Intrinsic, "+"); |
| pragma Convention (Intrinsic, "-"); |
| pragma Convention (Intrinsic, Increment); |
| pragma Convention (Intrinsic, Decrement); |
| |
| function Virtual_Length |
| (Ref : Pointer; |
| Terminator : Element := Default_Terminator) return ptrdiff_t; |
| |
| procedure Copy_Terminated_Array |
| (Source : Pointer; |
| Target : Pointer; |
| Limit : ptrdiff_t := ptrdiff_t'Last; |
| Terminator : Element := Default_Terminator); |
| |
| procedure Copy_Array |
| (Source : Pointer; |
| Target : Pointer; |
| Length : ptrdiff_t); |
| |
| private |
| pragma Inline ("+"); |
| pragma Inline ("-"); |
| pragma Inline (Decrement); |
| pragma Inline (Increment); |
| |
| end Interfaces.C.Pointers; |
