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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.
*/


#ifndef OBJECT_INCLUDED
#define OBJECT_INCLUDED


/*
    FORWARD STRUCTURE DECLARATIONS

    A number of types are defined recursively, these are declared here.
*/

struct field_tag ;
struct info_tag ;
struct type_tag ;


/*
    TYPE REPRESENTING AN OBJECT

    This type is used to represent a general object of list of objects.
    Each object has an associated name, an object type, a union giving
    different information for different object types, and a pointer to
    the next object.
*/

typedef struct object_tag {
    char *name ;
    int objtype ;
    union {
        int u_num ;
        char *u_str ;
        FILE *u_file ;
        struct field_tag *u_field ;
        struct info_tag *u_info ;
        struct object_tag *u_obj ;
        struct type_tag *u_type ;
    } u ;
    struct object_tag *next ;
    char *filename ;
    int line_no ;
} object ;


/*
    OBJECT TYPES

    These values give the various values for the objtype field of an
    object.  For each object type, the corresponding field of the union
    is given.
*/

#define OBJ_CONST               0        /* u_type */
#define OBJ_DEFINE              1       /* u_str */
#define OBJ_ENUM                2       /* u_type */
#define OBJ_ENUMVAL             3       /* u_str */
#define OBJ_EXP                 4       /* u_type */
#define OBJ_EXTERN              5       /* u_type */
#define OBJ_FIELD               6       /* u_field */
#define OBJ_FILE                7       /* u_file */
#define OBJ_FUNC                8       /* u_type */
#define OBJ_IF                  9       /* u_num */
#define OBJ_IMPLEMENT           10      /* u_obj */
#define OBJ_MACRO               11      /* u_str */
#define OBJ_NAT                 12      /* none */
#define OBJ_SET                 13      /* u_obj */
#define OBJ_STATEMENT           14      /* u_type */
#define OBJ_SUBSET              15      /* u_info */
#define OBJ_TEXT_INCL           16      /* none */
#define OBJ_TEXT_SRC            17      /* none */
#define OBJ_TOKEN               18      /* u_obj or u_str */
#define OBJ_TYPE                19      /* u_type */
#define OBJ_USE                 20      /* u_obj */
#define OBJ_WEAK                21      /* u_type */
#define OBJ_KEYWORD             22      /* u_num */


/*
    SUBTYPES FOR IF STATEMENTS

    Objects of type OBJ_IF are classified by a number indicating the 
    corresponding directive.
*/

#define CMD_END                 0
#define CMD_IF                  1
#define CMD_IFDEF               2
#define CMD_IFNDEF              3
#define CMD_ELSE                4
#define CMD_ENDIF               5
#define CMD_NONE                6


/*
    SUBSET INFORMATION

    This routine is used to represent subset information.
*/

typedef struct info_tag {
    char *api, *file, *subset ;
    time_t age ;
    char *incl, *src ;
    char *block ;
    char *linkage ;
    char *nspace ;
    char *method ;
    char *prefix ;
    char *protect ;
    char *version ;
    boolean tokens ;
    int implemented ;
    object *elements ;
} info ;


/*
    PROCEDURE DECLARATIONS

    These routines are concerned with creating and manipulating objects.
*/

extern object *make_object PROTO_S ( ( char *, int ) ) ;
extern object *join_object PROTO_S ( ( object *, object * ) ) ;
extern object *make_subset PROTO_S ( ( char * ) ) ;
extern info *make_info PROTO_S ( ( char *, char *, char * ) ) ;
extern object *make_token PROTO_S ( ( char *, int, object *, int ) ) ;
extern object *make_exp PROTO_S ( ( char *, int, int ) ) ;
extern void update_time PROTO_S ( ( object *, object * ) ) ;


#endif