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/* $Id: libgraph.h,v 1.15 2009/06/03 01:10:53 ellson Exp $ $Revision: 1.15 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _LIBGRAPH_H
#define _LIBGRAPH_H 1
#if _PACKAGE_ast
#include <ast.h>
#else
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#if !defined(MSWIN32) && !defined(WIN32)
#include <unistd.h>
#endif
#endif
#include <ctype.h>
#ifndef EXTERN
#define EXTERN extern
#endif
#ifndef NIL
#define NIL(t) ((t)0)
#endif
void ag_yyerror(char *);
int ag_yylex(void);
typedef struct Agraphinfo_t {
char notused;
} Agraphinfo_t;
typedef struct Agnodeinfo_t {
char notused;
} Agnodeinfo_t;
typedef struct Agedgeinfo_t {
char notused;
} Agedgeinfo_t;
#ifndef _BLD_graph
#define _BLD_graph 1
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "graph.h"
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#ifdef offsetof
#undef offsetof
#endif
#ifdef HAVE_INTPTR_T
#define offsetof(typ,fld) ((intptr_t)(&(((typ*)0)->fld)))
#else
#define offsetof(typ,fld) ((int)(&(((typ*)0)->fld)))
#endif
#ifndef NOT
#define NOT(v) (!(v))
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE NOT(FALSE)
#endif
#define NEW(t) (t*)calloc(1,sizeof(t))
#define N_NEW(n,t) (t*)calloc((n),sizeof(t))
#define ALLOC(size,ptr,type) (ptr? (type*)realloc(ptr,(size)*sizeof(type)):(type*)malloc((size)*sizeof(type)))
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))
#define SMALLBUF 128
#define ISALNUM(c) ((isalnum(c)) || ((c) == '_') || (!isascii(c)))
#define NOPRINT 0
#define MULTIPLE 1
#define MUSTPRINT 2
#define ISEMPTYSTR(s) (((s) == NULL) || (*(s) == '\0'))
#define NULL_FN(t) (t(*)())0
#define ZFREE(p) if (p) free(p);
#define TAG_NODE 1
#define TAG_EDGE 2
#define TAG_GRAPH 3
#define TAG_OF(p) (((Agraph_t*)(p))->tag)
#define AGFLAG_STRICT (1<<1)
#define AGFLAG_METAGRAPH (1<<2)
#define METAGRAPH (AGFLAG_DIRECTED | AGFLAG_STRICT | AGFLAG_METAGRAPH)
#define KEY_ID "key"
#define KEYX 0
#define TAILX 1
#define HEADX 2
EXTERN struct AG_s {
int graph_nbytes, node_nbytes, edge_nbytes;
Agraph_t *proto_g, *parsed_g;
char *edge_op;
char *linebuf;
short syntax_errors;
unsigned char accepting_state, init_called;
char * (*fgets) (char *s, int size, FILE *stream);
size_t (*fwrite) (const void *ptr, size_t size, size_t nmemb, FILE *stream);
int (*ferror) (FILE *stream);
} AG;
/* follow structs used in graph parser */
typedef struct objport_t {
void *obj;
char *port;
} objport_t;
typedef struct objlist_t {
objport_t data;
struct objlist_t *link;
} objlist_t;
typedef struct objstack_t {
Agraph_t *subg;
objlist_t *list, *last;
int in_edge_stmt;
struct objstack_t *link;
} objstack_t;
Agdict_t *agdictof(void *);
Agnode_t *agidnode(Agraph_t *, int);
Agdict_t *agNEWdict(char *);
Agedge_t *agNEWedge(Agraph_t *, Agnode_t *, Agnode_t *, Agedge_t *);
Agnode_t *agNEWnode(Agraph_t *, char *, Agnode_t *);
Agsym_t *agNEWsym(Agdict_t *, char *, char *);
int agcmpid(Dt_t *, int *, int *, Dtdisc_t *);
int agcmpin(Dt_t *, Agedge_t *, Agedge_t *, Dtdisc_t *);
int agcmpout(Dt_t *, Agedge_t *, Agedge_t *, Dtdisc_t *);
void agcopydict(Agdict_t *, Agdict_t *);
void agDELedge(Agraph_t *, Agedge_t *);
void agDELnode(Agraph_t *, Agnode_t *);
void agerror(char *);
void agFREEdict(Agraph_t *, Agdict_t *);
void agFREEedge(Agedge_t *);
void agFREEnode(Agnode_t *);
void aginitlib(int, int, int);
void agINSedge(Agraph_t *, Agedge_t *);
void agINSgraph(Agraph_t *, Agraph_t *);
void agINSnode(Agraph_t *, Agnode_t *);
int aglex(void);
void aglexinit(FILE *, gets_f mygets);
int agparse(void);
void agpopproto(Agraph_t *);
void agpushproto(Agraph_t *);
int agtoken(char *);
int aglinenumber(void);
void agwredge(Agraph_t *, FILE *, Agedge_t *, int);
void agwrnode(Agraph_t *, FILE *, Agnode_t *, int, int);
extern Dtdisc_t agNamedisc, agNodedisc, agOutdisc, agIndisc,
agEdgedisc;
#endif
#ifdef __cplusplus
}
#endif
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