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-- Ada bindings for GCC internals.
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT 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
-- along with GCC; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Ada.Unchecked_Conversion;
with System;
package C is
pragma Preelaborate (C);
-- Representation of a C String: this is an access to a bounded string.
-- Therefore, with GNAT, such an access is a thin pointer.
subtype Fat_C_String is String (Positive);
type C_String is access all Fat_C_String;
pragma Convention (C, C_String);
-- Convert an address to a C_STRING.
function To_C_String is new Ada.Unchecked_Conversion
(Source => System.Address, Target => C_String);
-- NULL for a string.
C_String_Null : constant C_String;
-- Convert an Ada access string to a C_String.
-- This simply takes the address of the first character of ACC. This
-- is unchecked, so be careful with the life of ACC.
-- The last element of the string designated by ACC must be the NUL-char.
-- This is a little bit more restrictive than being only NUL-terminated.
function To_C_String (Acc : access String) return C_String;
-- Return the length of a C String (ie, the number of characters before
-- the Nul).
function C_String_Len (Str : C_String) return Natural;
-- An (very large) array of C String. This is the type of ARGV.
type C_String_Array is array (Natural) of C_String;
pragma Convention (C, C_String_Array);
-- A structure for a string (len and address).
type C_Str_Len is record
Len : Natural;
Str : C_String;
end record;
pragma Convention (C_Pass_By_Copy, C_Str_Len);
type C_Str_Len_Acc is access C_Str_Len;
function Image (Str : C_Str_Len) return String;
private
C_String_Null : constant C_String := null;
end C;
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