| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- I N T E R F A C E S . C -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2003 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, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with System.Parameters; |
| |
| package Interfaces.C is |
| pragma Pure (C); |
| |
| -- Declaration's based on C's <limits.h> |
| |
| CHAR_BIT : constant := 8; |
| SCHAR_MIN : constant := -128; |
| SCHAR_MAX : constant := 127; |
| UCHAR_MAX : constant := 255; |
| |
| -- Signed and Unsigned Integers. Note that in GNAT, we have ensured that |
| -- the standard predefined Ada types correspond to the standard C types |
| |
| type int is new Integer; |
| type short is new Short_Integer; |
| type long is range -(2 ** (System.Parameters.long_bits - 1)) |
| .. +(2 ** (System.Parameters.long_bits - 1)) - 1; |
| |
| type signed_char is range SCHAR_MIN .. SCHAR_MAX; |
| for signed_char'Size use CHAR_BIT; |
| |
| type unsigned is mod 2 ** int'Size; |
| type unsigned_short is mod 2 ** short'Size; |
| type unsigned_long is mod 2 ** long'Size; |
| |
| type unsigned_char is mod (UCHAR_MAX + 1); |
| for unsigned_char'Size use CHAR_BIT; |
| |
| subtype plain_char is unsigned_char; -- ??? should be parametrized |
| |
| type ptrdiff_t is |
| range -(2 ** (Standard'Address_Size - 1)) .. |
| +(2 ** (Standard'Address_Size - 1) - 1); |
| |
| type size_t is mod 2 ** Standard'Address_Size; |
| |
| -- Floating-Point |
| |
| type C_float is new Float; |
| type double is new Standard.Long_Float; |
| type long_double is new Standard.Long_Long_Float; |
| |
| ---------------------------- |
| -- Characters and Strings -- |
| ---------------------------- |
| |
| type char is new Character; |
| |
| nul : constant char := char'First; |
| |
| function To_C (Item : Character) return char; |
| function To_Ada (Item : char) return Character; |
| |
| type char_array is array (size_t range <>) of aliased char; |
| for char_array'Component_Size use CHAR_BIT; |
| |
| function Is_Nul_Terminated (Item : in char_array) return Boolean; |
| |
| function To_C |
| (Item : in String; |
| Append_Nul : in Boolean := True) |
| return char_array; |
| |
| function To_Ada |
| (Item : in char_array; |
| Trim_Nul : in Boolean := True) |
| return String; |
| |
| procedure To_C |
| (Item : in String; |
| Target : out char_array; |
| Count : out size_t; |
| Append_Nul : in Boolean := True); |
| |
| procedure To_Ada |
| (Item : in char_array; |
| Target : out String; |
| Count : out Natural; |
| Trim_Nul : in Boolean := True); |
| |
| ------------------------------------ |
| -- Wide Character and Wide String -- |
| ------------------------------------ |
| |
| type wchar_t is new Wide_Character; |
| for wchar_t'Size use Standard'Wchar_T_Size; |
| |
| wide_nul : constant wchar_t := wchar_t'First; |
| |
| function To_C (Item : in Wide_Character) return wchar_t; |
| function To_Ada (Item : in wchar_t) return Wide_Character; |
| |
| type wchar_array is array (size_t range <>) of aliased wchar_t; |
| |
| function Is_Nul_Terminated (Item : in wchar_array) return Boolean; |
| |
| function To_C |
| (Item : in Wide_String; |
| Append_Nul : in Boolean := True) |
| return wchar_array; |
| |
| function To_Ada |
| (Item : in wchar_array; |
| Trim_Nul : in Boolean := True) |
| return Wide_String; |
| |
| procedure To_C |
| (Item : in Wide_String; |
| Target : out wchar_array; |
| Count : out size_t; |
| Append_Nul : in Boolean := True); |
| |
| procedure To_Ada |
| (Item : in wchar_array; |
| Target : out Wide_String; |
| Count : out Natural; |
| Trim_Nul : in Boolean := True); |
| |
| Terminator_Error : exception; |
| |
| private |
| -- No private declarations required |
| end Interfaces.C; |
