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/*
                 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.
*/


/*** entry.h --- Identifier table entry ADT.
 *
 ** Author: Steve Folkes <smf@hermes.mod.uk>
 *
 *** Commentary:
 *
 * See the file "entry.c" for more information.
 *
 *** Change Log:
 * $Log: entry.h,v $
 * Revision 1.1.1.1  1998/01/17  15:57:46  release
 * First version to be checked into rolling release.
 *
 * Revision 1.2  1994/12/15  09:58:11  smf
 * Brought into line with OSSG C Coding Standards Document, as per
 * "CR94_178.sid+tld-update".
 *
 * Revision 1.1.1.1  1994/07/25  16:04:34  smf
 * Initial import of SID 1.8 non shared files.
 *
**/

/****************************************************************************/

#ifndef H_ENTRY
#define H_ENTRY

#include "os-interface.h"
#include "dalloc.h"
#include "dstring.h"
#include "ostream.h"
#include "key.h"

/* To avoid circularity: */
#ifdef __TenDRA__
#pragma TenDRA begin
#pragma TenDRA complete struct/union analysis off
#endif
struct ActionT;
struct BasicT;
struct NameT;
struct RuleT;
struct TypeT;

/*--------------------------------------------------------------------------*/

#ifdef FS_NO_ENUM
typedef int EntryTypeT, *EntryTypeP;
#define ET_TYPE         (0)
#define ET_BASIC        (1)
#define ET_RULE         (2)
#define ET_ACTION       (3)
#define ET_NAME         (4)
#define ET_RENAME       (5)
#define ET_PREDICATE    (6)
#define ET_NON_LOCAL    (7)
#else
typedef enum {
    ET_TYPE,
    ET_BASIC,
    ET_RULE,
    ET_ACTION,
    ET_NAME,
    ET_RENAME,
    ET_PREDICATE,
    ET_NON_LOCAL
} EntryTypeT, *EntryTypeP;
#endif /* defined (FS_NO_ENUM) */

typedef struct EntryT {
    struct EntryT              *next;
    KeyT                        key;
    BoolT                       mapped;
    NStringT                    mapping;
    EntryTypeT                  type;
    BoolT                       traced;
    union {
        struct BasicT          *basic;
        struct RuleT           *rule;
        struct ActionT         *action;
        struct TypeT           *type;
        struct EntryT          *non_local;
    } u;
    struct NameT               *name;
} EntryT, *EntryP;

/*--------------------------------------------------------------------------*/

extern EntryP                   entry_create_from_string
        PROTO_S ((NStringP, unsigned, EntryTypeT));
extern EntryP                   entry_create_from_number
        PROTO_S ((unsigned, EntryTypeT, BoolT, EntryP));
extern void                     entry_set_basic
        PROTO_S ((EntryP, struct BasicT *));
extern void                     entry_set_rule
        PROTO_S ((EntryP, struct RuleT *));
extern void                     entry_set_action
        PROTO_S ((EntryP, struct ActionT *));
extern void                     entry_set_type
        PROTO_S ((EntryP, struct TypeT *));
extern void                     entry_set_non_local
        PROTO_S ((EntryP, EntryP));
extern EntryP                   entry_next
        PROTO_S ((EntryP));
extern EntryP                  *entry_next_ref
        PROTO_S ((EntryP));
extern KeyP                     entry_key
        PROTO_S ((EntryP));
extern EntryTypeT               entry_type
        PROTO_S ((EntryP));
extern void                     entry_change_type
        PROTO_S ((EntryP, EntryTypeT));
extern BoolT                    entry_is_basic
        PROTO_S ((EntryP));
extern BoolT                    entry_is_action
        PROTO_S ((EntryP));
extern BoolT                    entry_is_rule
        PROTO_S ((EntryP));
extern BoolT                    entry_is_type
        PROTO_S ((EntryP));
extern BoolT                    entry_is_non_local
        PROTO_S ((EntryP));
extern struct BasicT           *entry_get_basic
        PROTO_S ((EntryP));
extern struct ActionT          *entry_get_action
        PROTO_S ((EntryP));
extern struct RuleT            *entry_get_rule
        PROTO_S ((EntryP));
extern struct NameT            *entry_get_name
        PROTO_S ((EntryP));
extern struct TypeT            *entry_get_type
        PROTO_S ((EntryP));
extern EntryP                   entry_get_non_local
        PROTO_S ((EntryP));
extern void                     entry_set_mapping
        PROTO_S ((EntryP, NStringP));
extern NStringP                 entry_get_mapping
        PROTO_S ((EntryP));
extern void                     entry_iter
        PROTO_S ((EntryP, BoolT, void (*) (EntryP, GenericP), GenericP));
extern void                     entry_not_traced
        PROTO_S ((EntryP));
extern BoolT                    entry_is_traced
        PROTO_S ((EntryP));

/*--------------------------------------------------------------------------*/

#ifdef FS_FAST
#define entry_set_basic(e, b)  ((e)->u.basic = (b))
#define entry_set_rule(e, r)  ((e)->u.rule = (r))
#define entry_set_action(e, a)  ((e)->u.action = (a))
#define entry_set_type(e, t)  ((e)->u.type = (t))
#define entry_next(e) ((e)->next)
#define entry_next_ref(e) (&((e)->next))
#define entry_key(e) (&((e)->key))
#define entry_type(e) ((e)->type)
#define entry_change_type(e, t) ((e)->type = (t))
#define entry_is_basic(e) ((e)->type == ET_BASIC)
#define entry_is_action(e) ((e)->type == ET_ACTION)
#define entry_is_rule(e) ((e)->type == ET_RULE)
#define entry_is_type(e) ((e)->type == ET_TYPE)
#define entry_is_non_local(e) ((e)->type == ET_NON_LOCAL)
#define entry_get_basic(e) ((e)->u.basic)
#define entry_get_action(e) ((e)->u.action)
#define entry_get_rule(e) ((e)->u.rule)
#define entry_get_name(e) ((e)->name)
#define entry_get_type(e) ((e)->u.type)
#define entry_not_traced(e) ((e)->traced = FALSE)
#define entry_is_traced(e) ((e)->traced)
#endif /* defined (FS_FAST) */

#endif /* !defined (H_ENTRY) */

/*
 * Local variables(smf):
 * eval: (include::add-path-entry "../os-interface" "../library")
 * eval: (include::add-path-entry "../generated")
 * end:
**/