/******************************************************************************\
*                                                                              *
*    SimpleCUDD library (www.cs.kuleuven.be/~theo/tools/simplecudd.html)       *
*  SimpleCUDD was developed at Katholieke Universiteit Leuven(www.kuleuven.be) *
*                                                                              *
*  Copyright Katholieke Universiteit Leuven 2008                               *
*                                                                              *
*  Author: Theofrastos Mantadelis                                              *
*  File: simplecudd.h                                                          *
*                                                                              *
********************************************************************************
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/* modified by Fabrizio Riguzzi in 2009 for dealing with multivalued variables
instead of variables or their negation, the script can contain equations of the 
form
variable=value
*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
#include "util.h"
#include "cudd.h"
#include "cuddInt.h"
#include "general.h"

#define IsHigh(manager, node)  HIGH(manager) == node
#define IsLow(manager, node)   LOW(manager) == node
#define HIGH(manager)          Cudd_ReadOne(manager)
#define LOW(manager)           Cudd_Not(Cudd_ReadOne(manager))
#define NOT(node)              Cudd_Not(node)
#define GetIndex(node)         Cudd_NodeReadIndex(node)
#define GetMVar(manager, index, value, varmap) equality(manager,index,value,varmap)//Cudd_bddIthVar(manager, index)
#define GetVar(manager, index) Cudd_bddIthVar(manager, index)
#define NewVar(manager)        Cudd_bddNewVar(manager)
#define KillBDD(manager)       Cudd_Quit(manager)
#define GetVarCount(manager)   Cudd_ReadSize(manager)
#define DEBUGON                _debug = 1
#define DEBUGOFF               _debug = 0
#define RAPIDLOADON            _RapidLoad = 1
#define RAPIDLOADOFF           _RapidLoad = 0
#define SETMAXBUFSIZE(size)    _maxbufsize = size
#define BDDFILE_ERROR          -1
#define BDDFILE_OTHER          0
#define BDDFILE_SCRIPT         1
#define BDDFILE_NODEDUMP       2

extern int _RapidLoad;
extern int _debug;
extern int _maxbufsize;

typedef struct _bddfileheader {
  FILE *inputfile;
  int version;
  int varcnt;
  int bvarcnt;
  int varstart;
  int intercnt;
  int filetype;
} bddfileheader;

typedef struct
  {
int nVal,nBit,init;
double * probabilities;
int  * booleanVars;
} variable;

typedef struct _namedvars {
  int varcnt;
  int varstart;
  char **vars;
  int *loaded;
  double *dvalue;
  int *ivalue;
  void **dynvalue;
  variable * mvars;
  int * bVar2mVar;
} namedvars;


typedef struct _hisnode {
  DdNode *key;
  double dvalue;
  int ivalue;
  void *dynvalue;
} hisnode;

typedef struct _hisqueue {
  int cnt;
  hisnode *thenode;
} hisqueue;

typedef struct _nodeline {
  char *varname;
  char *truevar;
  char *falsevar;
  int nodenum;
  int truenode;
  int falsenode;
} nodeline;

/* Initialization */

DdManager* simpleBDDinit(int varcnt);

/* BDD Generation */

DdNode* D_BDDAnd(DdManager *manager, DdNode *bdd1, DdNode *bdd2);
DdNode* D_BDDNand(DdManager *manager, DdNode *bdd1, DdNode *bdd2);
DdNode* D_BDDOr(DdManager *manager, DdNode *bdd1, DdNode *bdd2);
DdNode* D_BDDNor(DdManager *manager, DdNode *bdd1, DdNode *bdd2);
DdNode* D_BDDXor(DdManager *manager, DdNode *bdd1, DdNode *bdd2);
DdNode* D_BDDXnor(DdManager *manager, DdNode *bdd1, DdNode *bdd2);

DdNode* FileGenerateBDD(DdManager *manager, namedvars varmap, bddfileheader fileheader);
DdNode* OnlineGenerateBDD(DdManager *manager, namedvars *varmap);
DdNode* LineParser(DdManager *manager, namedvars varmap, DdNode **inter, int maxinter, char *function, int iline);
DdNode* OnlineLineParser(DdManager *manager, namedvars *varmap, DdNode **inter, int maxinter, char *function, int iline);
DdNode* BDD_Operator(DdManager *manager, DdNode *bdd1, DdNode *bdd2, char Operator, int inegoper);
int getInterBDD(char *function);
char* getFileName(const char *function);
int GetParam(char *inputline, int iParam);
int LoadVariableData(namedvars varmap, char *filename);
int LoadMultiVariableData(DdManager * mgr,namedvars varmap, char *filename);

/* Named variables */

namedvars InitNamedVars(int varcnt, int varstart);
namedvars InitNamedMultiVars(int varcnt, int varstart, int bvarcnt);
void EnlargeNamedVars(namedvars *varmap, int newvarcnt);
int AddNamedVarAt(namedvars varmap, const char *varname, int index);
int AddNamedVar(namedvars varmap, const char *varname);
int AddNamedMultiVar(DdManager *mgr,namedvars varmap, const char *varnamei, int *value);
void SetNamedVarValuesAt(namedvars varmap, int index, double dvalue, int ivalue, void *dynvalue);
int SetNamedVarValues(namedvars varmap, const char *varname, double dvalue, int ivalue, void *dynvalue);
int GetNamedVarIndex(const namedvars varmap, const char *varname);
int RepairVarcnt(namedvars *varmap);
char* GetNodeVarName(DdManager *manager, namedvars varmap, DdNode *node);
char* GetNodeVarNameDisp(DdManager *manager, namedvars varmap, DdNode *node);
int all_loaded(namedvars varmap, int disp);

/* Traversal */

DdNode* HighNodeOf(DdManager *manager, DdNode *node);
DdNode* LowNodeOf(DdManager *manager, DdNode *node);

/* Traversal - History */

hisqueue* InitHistory(int varcnt);
void ReInitHistory(hisqueue *HisQueue, int varcnt);
void AddNode(hisqueue *HisQueue, int varstart, DdNode *node, double dvalue, int ivalue, void *dynvalue);
hisnode* GetNode(hisqueue *HisQueue, int varstart, DdNode *node);
int GetNodeIndex(hisqueue *HisQueue, int varstart, DdNode *node);
void onlinetraverse(DdManager *manager, namedvars varmap, hisqueue *HisQueue, DdNode *bdd);

/* Save-load */

bddfileheader ReadFileHeader(char *filename);
int CheckFileVersion(const char *version);

DdNode * LoadNodeDump(DdManager *manager, namedvars varmap, FILE *inputfile);
DdNode * LoadNodeRec(DdManager *manager, namedvars varmap, hisqueue *Nodes, FILE *inputfile, nodeline current);
DdNode * GetIfExists(DdManager *manager, namedvars varmap, hisqueue *Nodes, char *varname, int nodenum);

int SaveNodeDump(DdManager *manager, namedvars varmap, DdNode *bdd, char *filename);
void SaveExpand(DdManager *manager, namedvars varmap, hisqueue *Nodes, DdNode *Current, FILE *outputfile);
void ExpandNodes(hisqueue *Nodes, int index, int nodenum);

/* Export */

int simpleBDDtoDot(DdManager *manager, DdNode *bdd, char *filename);
int simpleNamedBDDtoDot(DdManager *manager, namedvars varmap, DdNode *bdd, char *filename);

DdNode * equality(DdManager *mgr,int varIndex,int value,namedvars varmap);
hisnode* GetNodei1(int *bVar2mVar,hisqueue *HisQueue, int varstart, DdNode *node);
void AddNode1(int *bVar2mVar, hisqueue *HisQueue, int varstart, DdNode *node, double dvalue, int ivalue, void *dynvalue);
hisnode* GetNode1(int *bVar2mVar,hisqueue *HisQueue, int varstart, DdNode *node);
