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/********************* */
/*! \file array_info.h
** \verbatim
** Original author: lianah
** Major contributors: none
** Minor contributors (to current version): mdeters
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010, 2011 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief [[ Add one-line brief description here ]]
**
** [[ Add lengthier description here ]]
** \todo document this file
**/
/*! \file array_info.h
** \verbatim
** Original author: lianah
** Major contributors: none
** Minor contributors (to current version): none
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief Contains additional classes to store context dependent information
** for each term of type array
**
**
**/
#include "cvc4_private.h"
#ifndef __CVC4__THEORY__ARRAYS__ARRAY_INFO_H
#define __CVC4__THEORY__ARRAYS__ARRAY_INFO_H
#include "util/backtrackable.h"
#include "context/cdlist.h"
#include "context/cdhashmap.h"
#include "expr/node.h"
#include "util/stats.h"
#include "util/ntuple.h"
#include <ext/hash_set>
#include <ext/hash_map>
#include <iostream>
#include <map>
namespace CVC4 {
namespace theory {
namespace arrays {
typedef context::CDList<TNode> CTNodeList;
struct TNodeQuadHashFunction {
size_t operator()(const quad<CVC4::TNode, CVC4::TNode, CVC4::TNode, CVC4::TNode>& q ) const {
TNode n1 = q.first;
TNode n2 = q.second;
TNode n3 = q.third;
TNode n4 = q.fourth;
return (size_t) (n1.getId()*0x9e3779b9 + n2.getId()*0x30000059 +
n3.getId()*0x60000005 + n4.getId()*0x07FFFFFF);
}
};/* struct TNodeQuadHashFunction */
void printList (CTNodeList* list);
void printList( List<TNode>* list);
bool inList(const CTNodeList* l, const TNode el);
/**
* Small class encapsulating the information
* in the map. It's a class and not a struct to
* call the destructor.
*/
class Info {
public:
List<TNode>* indices;
CTNodeList* stores;
CTNodeList* in_stores;
Info(context::Context* c, Backtracker<TNode>* bck) {
indices = new List<TNode>(bck);
stores = new(true)CTNodeList(c);
in_stores = new(true)CTNodeList(c);
}
~Info() {
//FIXME!
//indices->deleteSelf();
stores->deleteSelf();
in_stores->deleteSelf();
}
/**
* prints the information
*/
void print() const {
Assert(indices != NULL && stores!= NULL); // && equals != NULL);
Trace("arrays-info")<<" indices ";
printList(indices);
Trace("arrays-info")<<" stores ";
printList(stores);
Trace("arrays-info")<<" in_stores ";
printList(in_stores);
}
};
typedef __gnu_cxx::hash_map<Node, Info*, NodeHashFunction> CNodeInfoMap;
/**
* Class keeping track of the following information for canonical
* representatives of type array [a] :
* indices at which it is being read (all i for which there is a
* term of the form SELECT a i)
* all store terms in the congruence class
* stores in which it appears (terms of the form STORE a _ _ )
*
*/
class ArrayInfo {
private:
context::Context* ct;
Backtracker<TNode>* bck;
CNodeInfoMap info_map;
CTNodeList* emptyList;
List<TNode>* emptyListI;
/* == STATISTICS == */
/** time spent in preregisterTerm() */
TimerStat d_mergeInfoTimer;
AverageStat d_avgIndexListLength;
AverageStat d_avgStoresListLength;
AverageStat d_avgInStoresListLength;
IntStat d_listsCount;
IntStat d_callsMergeInfo;
IntStat d_maxList;
SizeStat<CNodeInfoMap > d_tableSize;
/**
* checks if a certain element is in the list l
* FIXME: better way to check for duplicates?
*/
/**
* helper method that merges two lists into the first
* without adding duplicates
*/
void mergeLists(CTNodeList* la, const CTNodeList* lb) const;
public:
const Info* emptyInfo;
/*
ArrayInfo(): ct(NULl), info
d_mergeInfoTimer("theory::arrays::mergeInfoTimer"),
d_avgIndexListLength("theory::arrays::avgIndexListLength"),
d_avgStoresListLength("theory::arrays::avgStoresListLength"),
d_avgInStoresListLength("theory::arrays::avgInStoresListLength"),
d_listsCount("theory::arrays::listsCount",0),
d_callsMergeInfo("theory::arrays::callsMergeInfo",0),
d_maxList("theory::arrays::maxList",0),
d_tableSize("theory::arrays::infoTableSize", info_map) {
StatisticsRegistry::registerStat(&d_mergeInfoTimer);
StatisticsRegistry::registerStat(&d_avgIndexListLength);
StatisticsRegistry::registerStat(&d_avgStoresListLength);
StatisticsRegistry::registerStat(&d_avgInStoresListLength);
StatisticsRegistry::registerStat(&d_listsCount);
StatisticsRegistry::registerStat(&d_callsMergeInfo);
StatisticsRegistry::registerStat(&d_maxList);
StatisticsRegistry::registerStat(&d_tableSize);
}*/
ArrayInfo(context::Context* c, Backtracker<TNode>* b): ct(c), bck(b), info_map(),
d_mergeInfoTimer("theory::arrays::mergeInfoTimer"),
d_avgIndexListLength("theory::arrays::avgIndexListLength"),
d_avgStoresListLength("theory::arrays::avgStoresListLength"),
d_avgInStoresListLength("theory::arrays::avgInStoresListLength"),
d_listsCount("theory::arrays::listsCount",0),
d_callsMergeInfo("theory::arrays::callsMergeInfo",0),
d_maxList("theory::arrays::maxList",0),
d_tableSize("theory::arrays::infoTableSize", info_map) {
emptyList = new(true) CTNodeList(ct);
emptyListI = new List<TNode>(bck);
emptyInfo = new Info(ct, bck);
StatisticsRegistry::registerStat(&d_mergeInfoTimer);
StatisticsRegistry::registerStat(&d_avgIndexListLength);
StatisticsRegistry::registerStat(&d_avgStoresListLength);
StatisticsRegistry::registerStat(&d_avgInStoresListLength);
StatisticsRegistry::registerStat(&d_listsCount);
StatisticsRegistry::registerStat(&d_callsMergeInfo);
StatisticsRegistry::registerStat(&d_maxList);
StatisticsRegistry::registerStat(&d_tableSize);
}
~ArrayInfo(){
CNodeInfoMap::iterator it = info_map.begin();
for( ; it != info_map.end(); it++ ) {
if((*it).second!= emptyInfo) {
delete (*it).second;
}
}
emptyList->deleteSelf();
delete emptyInfo;
StatisticsRegistry::unregisterStat(&d_mergeInfoTimer);
StatisticsRegistry::unregisterStat(&d_avgIndexListLength);
StatisticsRegistry::unregisterStat(&d_avgStoresListLength);
StatisticsRegistry::unregisterStat(&d_avgInStoresListLength);
StatisticsRegistry::unregisterStat(&d_listsCount);
StatisticsRegistry::unregisterStat(&d_callsMergeInfo);
StatisticsRegistry::unregisterStat(&d_maxList);
StatisticsRegistry::unregisterStat(&d_tableSize);
};
/**
* adds the node a to the map if it does not exist
* and it initializes the info. checks for duplicate i's
*/
void addIndex(const Node a, const TNode i);
void addStore(const Node a, const TNode st);
void addInStore(const TNode a, const TNode st);
/**
* Returns the information associated with TNode a
*/
const Info* getInfo(const TNode a) const;
List<TNode>* getIndices(const TNode a) const;
const CTNodeList* getStores(const TNode a) const;
const CTNodeList* getInStores(const TNode a) const;
/**
* merges the information of nodes a and b
* the nodes do not have to actually be in the map.
* pre-condition
* a should be the canonical representative of b
*/
void mergeInfo(const TNode a, const TNode b);
};
}/* CVC4::theory::arrays namespace */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
#endif /* __CVC4__THEORY__ARRAYS__ARRAY_INFO_H */
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