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/********************* */
/*! \file shared_term_manager.h
** \verbatim
** Original author: barrett
** Major contributors:
** Minor contributors (to current version):
** 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 Manager for shared terms
**
** Manager for shared terms.
**/
#include "cvc4_private.h"
#ifndef __CVC4__SHARED_TERM_MANAGER_H
#define __CVC4__SHARED_TERM_MANAGER_H
#include "expr/node.h"
#include "theory/shared_data.h"
namespace CVC4 {
namespace context {
class Context;
}
namespace theory {
class Theory;
}
/**
* Manages shared terms
*/
class SharedTermManager {
TheoryEngine* d_engine;
context::Context* d_context;
std::vector<theory::Theory*> d_theories;
SharedData* find(SharedData* pData);
public:
SharedTermManager(TheoryEngine* engine, context::Context* context);
void registerTheory(theory::Theory* th);
void addTerm(TNode n, theory::Theory* parent,
theory::Theory* child);
void addEq(theory::Theory* thReason, TNode eq);
Node explain(TNode eq);
};/* class SharedTermManager */
/**
* Cleanup function for SharedData. This will be called whenever
* a SharedAttr is being destructed.
*/
struct SharedDataCleanupStrategy {
static void cleanup(SharedData* sd) {
sd->deleteSelf();
}
};/* struct SharedDataCleanupStrategy */
/** Unique name to use for constructing ECAttr. */
struct SharedAttrTag {};
/**
* SharedAttr is the attribute that maps a node to its SharedData.
*/
typedef expr::Attribute<SharedAttrTag, SharedData*,
SharedDataCleanupStrategy> SharedAttr;
}/* CVC4 namespace */
#endif /* __CVC4__SHARED_TERM_MANAGER_H */
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