------------------------------------------------------------------------------ -- -- -- 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) 1993-2005, 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 2, 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. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING. If not, write -- -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- -- Boston, MA 02110-1301, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- -- this unit does not by itself cause the resulting executable to be -- -- covered by the GNU General Public License. This exception does not -- -- however invalidate any other reasons why the executable file might be -- -- covered by the GNU Public License. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ 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; 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;