/*
 * Copyright (c) 2002, The Tendra Project <http://www.ten15.org/>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 *    		 Crown Copyright (c) 1997
 *    
 *    This TenDRA(r) Computer Program is subject to Copyright
 *    owned by the United Kingdom Secretary of State for Defence
 *    acting through the Defence Evaluation and Research Agency
 *    (DERA).  It is made available to Recipients with a
 *    royalty-free licence for its use, reproduction, transfer
 *    to other parties and amendment for any purpose not excluding
 *    product development provided that any such use et cetera
 *    shall be deemed to be acceptance of the following conditions:-
 *    
 *        (1) Its Recipients shall ensure that this Notice is
 *        reproduced upon any copies or amended versions of it;
 *    
 *        (2) Any amended version of it shall be clearly marked to
 *        show both the nature of and the organisation responsible
 *        for the relevant amendment or amendments;
 *    
 *        (3) Its onward transfer from a recipient to another
 *        party shall be deemed to be that party's acceptance of
 *        these conditions;
 *    
 *        (4) DERA gives no warranty or assurance as to its
 *        quality or suitability for any purpose and DERA accepts
 *        no liability whatsoever in relation to any use to which
 *        it may be put.
 *
 * $TenDRA: tendra/src/producers/common/construct/access.h,v 1.5 2003/08/24 22:52:55 nonce Exp $
 */


#ifndef ACCESS_INCLUDED
#define ACCESS_INCLUDED


/*
 *    TYPE REPRESENTING LIST OF PENDING ACCESS CHECKS
 *
 *    This type is used to represent a list of pending access checks.  These
 *    fall into two categories - member accesses and base class accesses.
 */

typedef struct {
    LIST (IDENTIFIER) ids;
    LIST (GRAPH) bases;
    LIST (int) info;
    int pending;
    int inherit;
} ACCESS_LIST;


/*
 *    ACCESS DECLARATIONS
 *
 *    The routines in this module are concerned with class member access.
 */

extern IDENTIFIER access_decl(IDENTIFIER);
extern void friend_function(CLASS_TYPE, IDENTIFIER, int);
extern void friend_class(CLASS_TYPE, IDENTIFIER, int);
extern DECL_SPEC join_access(DECL_SPEC, DECL_SPEC);
extern void check_access(IDENTIFIER, DECL_SPEC);
extern void check_base_access(GRAPH);
extern void immediate_access(IDENTIFIER, IDENTIFIER);
extern int clear_access(IDENTIFIER, ACCESS_LIST *);
extern int report_access(IDENTIFIER);
extern void adjust_access(IDENTIFIER, DECL_SPEC, int);
extern void free_access(ACCESS_LIST *);
extern void save_access(ACCESS_LIST *);
extern int restore_access(IDENTIFIER, ACCESS_LIST *);
extern ACCESS_LIST crt_access_list;
extern int do_access_checks;
extern DECL_SPEC crt_access;
extern DECL_SPEC prev_access;
extern int have_access_decl;


/*
 *    SECONDARY ACCESS MACROS
 *
 *    These macros are used for converting between primary and secondary
 *    access values.
 */

#define shadow_access(A)	(((A) & dspec_access) << 2)
#define unshadow_access(A)	(((A) & dspec_access2) >> 2)


#endif