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Diffstat (limited to 'gcc-4.2.1/gcc/ada/i-cpoint.ads')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/i-cpoint.ads | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/gcc-4.2.1/gcc/ada/i-cpoint.ads b/gcc-4.2.1/gcc/ada/i-cpoint.ads new file mode 100644 index 000000000..80c2bfb27 --- /dev/null +++ b/gcc-4.2.1/gcc/ada/i-cpoint.ads @@ -0,0 +1,101 @@ +------------------------------------------------------------------------------ +-- -- +-- 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; |