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#ifndef _FACTSYSTEMH_

#define _FACTSYSTEMH_

#ifdef INFORMATION

Copyright (C)2011-2021 by Bruce Wilcox

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#endif

#define MAX_FACT_NODES 800000

typedef struct FACT

{

uint64 botBits; // which bots can access this fact (up to 64)

MEANING subject;

MEANING verb;

MEANING object;

unsigned int flags;

// xref lists for querying

FACTOID_OR_MEANING subjectHead;

FACTOID_OR_MEANING verbHead;

FACTOID_OR_MEANING objectHead;

FACTOID_OR_MEANING subjectNext;

FACTOID_OR_MEANING verbNext;

FACTOID_OR_MEANING objectNext;

} FACT;

extern int worstlastFactUsed;

extern FACT* factBase; // start of fact space

extern FACT* factEnd; // end of fact space

extern FACT* currentFact; // most recent fact found or created

extern FACT* factsPreBuild[NUMBER_OF_LAYERS+1]; // end of build0 facts (start of build1 facts)

extern FACT* lastFactUsed; // end of facts - most recent fact allocated (ready for next allocation)

// pre-reserved verb types

extern MEANING Mmember;

extern MEANING Mexclude;

extern MEANING Mis;

extern HEAPREF botVariableThreadList;

extern HEAPREF factThread;

extern bool factsExhausted;

extern size_t maxFacts; // allocation limit of facts

extern uint64 myBot;

void SortFacts(char* set, int alpha, int setpass = -1);

extern bool seeAllFacts;

typedef void (*FACT_FUNCTION)(FACT* F, uint64 data);

// fact index accessing

FACTOID Fact2Index(FACT* F);

FACT* Index2Fact(FACTOID e);

inline FACTOID currentFactIndex() { return (currentFact) ? (FACTOID)((currentFact - factBase)) : 0;}

FACT* FactTextIndex2Fact(char* word);

void RipFacts(FACT* F,WORDP dictbase);

void WeaveFacts(FACT* F);

FACT* WeaveFact(FACT* F);

void UnweaveFact(FACT* F);

void UnweaveFactSubject(FACT* F);

void UnweaveFactVerb(FACT* F);

void UnweaveFactObject(FACT* F);

FACT* EarliestFact(MEANING M);

// fact system startup and shutdown

void InitFacts();

void CloseFacts();

void ResetFactSystem(FACT* locked);

void InitFactWords();

void AutoKillFact(MEANING M);

bool ValidMemberFact(FACT* F);

void VerifyFacts();

bool UnacceptableFact(FACT* F, bool jsonavoid);

// fact creation and destruction

FACT* FindFact(FACTOID_OR_MEANING subject, FACTOID_OR_MEANING verb, FACTOID_OR_MEANING object, unsigned int properties = 0);

FACT* CreateFact(FACTOID_OR_MEANING subject,FACTOID_OR_MEANING verb, FACTOID_OR_MEANING object,unsigned int properties = 0);

FACT* CreateFastFact(FACTOID_OR_MEANING subject, FACTOID_OR_MEANING verb, FACTOID_OR_MEANING object, unsigned int properties);

void KillFact(FACT* F,bool jsonrecurse = true, bool autoreviseArray = true);

FACT* SpecialFact(FACTOID_OR_MEANING verb, FACTOID_OR_MEANING object,unsigned int flags);

void FreeFact(FACT* F);

char* GetSetEnd(char* x);

// fact reading and writing

char* ReadField(char* ptr,char* field,char fieldkind,unsigned int& flags);

char* EatFact(char* ptr,char* buffer,unsigned int flags = 0,bool attribute = false);

FACT* ReadFact(char* &ptr,unsigned int build);

void ReadFacts(const char* name,const char* layer,unsigned int build,bool user = false);

char* WriteFact(FACT* F,bool comments,char* buffer,bool ignoreDead = false,bool eol = false,bool displayonly = false);

void WriteFacts(FILE* out,FACT* from,int flags = 0);

bool ReadBinaryFacts(FILE* in,bool dictionary);

void WriteBinaryFacts(FILE* out,FACT* F);

void ClearUserFacts();

extern char traceSubject[100];

extern char traceVerb[100];

extern char traceObject[100];

extern bool recordBoot;

extern bool bootFacts;

// factset information

char* GetSetType(char* x);

int GetSetID(char* x);

bool GetSetMod(char* x);

unsigned int AddFact(unsigned int set, FACT* F);

FunctionResult ExportJson(char* name, char* jsonitem, char* append);

// reading and writing facts to file

bool ExportFacts(char* name, int set,char* append);

bool ImportFacts(char* buffer,char* name, char* store, char* erase, char* transient);

// debugging

void TraceFact(FACT* F,bool ignoreDead = true);

// field access

inline FACT* GetSubjectHead(FACT* F) {return Index2Fact(F->subjectHead);}

inline FACT* GetVerbHead(FACT* F) {return Index2Fact(F->verbHead);}

inline FACT* GetObjectHead(FACT* F) {return Index2Fact(F->objectHead);}

FACT* GetSubjectNondeadHead(FACT* F);

FACT* GetVerbNondeadHead(FACT* F);

FACT* GetObjectNondeadHead(FACT* F);

inline void SetSubjectHead(FACT* F, FACT* value){ F->subjectHead = Fact2Index(value);}

inline void SetVerbHead(FACT* F, FACT* value) {F->verbHead = Fact2Index(value);}

inline void SetObjectHead(FACT* F, FACT* value){ F->objectHead = Fact2Index(value);}

typedef FACT* (*GetNextFact)(FACT* F);

typedef void (*SetNextFact)(FACT* F,FACT* value);

FACT* GetSubjectNondeadNext(FACT* F,bool jsonaccept = true);

FACT* GetVerbNondeadNext(FACT* F);

FACT* GetObjectNondeadNext(FACT* F) ;

FACT* GetSubjectNext(FACT* F);

FACT* GetVerbNext(FACT* F);

FACT* GetObjectNext(FACT* F) ;

void SetSubjectNext(FACT* F, FACT* value);

void SetVerbNext(FACT* F, FACT* value);

void SetObjectNext(FACT* F, FACT* value);

inline FACT* GetSubjectHead(WORDP D) {return Index2Fact(D->subjectHead);}

inline FACT* GetVerbHead(WORDP D) {return Index2Fact(D->verbHead);}

inline FACT* GetObjectHead(WORDP D) {return Index2Fact(D->objectHead);}

FACT* GetSubjectNondeadHead(WORDP D,bool jsonaccept = true);

FACT* GetVerbNondeadHead(WORDP D);

FACT* GetObjectNondeadHead(WORDP D);

inline FACT* GetSubjectNondeadHead(MEANING M) {return GetSubjectNondeadHead(Meaning2Word(M));}

inline FACT* GetVerbNondeadHead(MEANING M) {return GetVerbNondeadHead(Meaning2Word(M));}

inline FACT* GetObjectNondeadHead(MEANING M) {return GetObjectNondeadHead(Meaning2Word(M));}

inline void SetSubjectHead(WORDP D, FACT* value) {D->subjectHead = Fact2Index(value);}

inline void SetVerbHead(WORDP D, FACT* value) {D->verbHead = Fact2Index(value);}

inline void SetObjectHead(WORDP D, FACT* value) {D->objectHead = Fact2Index(value);}

inline FACT* GetSubjectHead(MEANING M) {return GetSubjectHead(Meaning2Word(M));}

inline FACT* GetVerbHead(MEANING M) {return GetVerbHead(Meaning2Word(M));}

inline FACT* GetObjectHead(MEANING M) {return GetObjectHead(Meaning2Word(M));}

inline void SetSubjectHead(MEANING M, FACT* value) {SetSubjectHead(Meaning2Word(M),value);}

inline void SetVerbHead(MEANING M, FACT* value) {SetVerbHead(Meaning2Word(M),value);}

inline void SetObjectHead(MEANING M, FACT* value) {SetObjectHead(Meaning2Word(M),value);}

void ModBaseFact(FACT* F);

void RedoSystemFactFields();

void NoteBotFacts();

void MigrateFactsToBoot(FACT* oldlastFactUsed, FACT* F);

#endif