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/********************* */
/*! \file expr_miner_manager.h
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Expression miner manager, which manages individual expression miners.
**/
#include "cvc4_private.h"
#ifndef __CVC4__THEORY__QUANTIFIERS__EXPR_MINER_MANAGER_H
#define __CVC4__THEORY__QUANTIFIERS__EXPR_MINER_MANAGER_H
#include "expr/node.h"
#include "theory/quantifiers/candidate_rewrite_database.h"
#include "theory/quantifiers/extended_rewrite.h"
#include "theory/quantifiers/query_generator.h"
#include "theory/quantifiers/sygus_sampler.h"
#include "theory/quantifiers_engine.h"
namespace CVC4 {
namespace theory {
namespace quantifiers {
/** ExpressionMinerManager
*
* This class manages a set of expression miners. It provides a common place
* to register expressions so that multiple mining algorithms can be run in
* coordination, possibly sharing information and utilities like a common
* sampling object.
*/
class ExpressionMinerManager
{
public:
ExpressionMinerManager();
~ExpressionMinerManager() {}
/** Initialize this class
*
* Initializes this class, informing it that the free variables of terms
* added to this class via addTerm will have free variables that are a subset
* of vars, and have type tn. All expression miners in this class with be
* initialized with this variable list. The arguments nsamples and
* unique_type_ids are used for initializing the sampler class of this manager
* (see SygusSampler::initialize for details).
*/
void initialize(const std::vector<Node>& vars,
TypeNode tn,
unsigned nsamples,
bool unique_type_ids = false);
/** Initialize this class, sygus version
*
* Initializes this class, informing it that the terms added to this class
* via calls to addTerm will be generated by the grammar of f. The method
* takes a pointer to the quantifiers engine qe. If the argument useSygusType
* is true, the terms added to this class are the sygus datatype terms.
* If useSygusType is false, the terms are the builtin equivalent of these
* terms. The argument nsamples is used to initialize the sampler.
*/
void initializeSygus(QuantifiersEngine* qe,
Node f,
unsigned nsamples,
bool useSygusType);
/** enable rewrite rule synthesis (--sygus-rr-synth) */
void enableRewriteRuleSynth();
/** enable query generation (--sygus-query-gen) */
void enableQueryGeneration(unsigned deqThresh);
/** add term
*
* Expression miners may print information on the output stream out, for
* instance, candidate-rewrites. The method returns true if the term sol is
* distinct (up to T-equivalence) with all previous terms added to this class,
* which is computed based on the miners that this manager enables.
*/
bool addTerm(Node sol, std::ostream& out);
/**
* Same as above, but the argument rew_print is set to true if a rewrite rule
* was printed on the output stream out.
*/
bool addTerm(Node sol, std::ostream& out, bool& rew_print);
private:
/** whether we are doing rewrite synthesis */
bool d_doRewSynth;
/** whether we are doing query generation */
bool d_doQueryGen;
/** the sygus function passed to initializeSygus, if any */
Node d_sygus_fun;
/** whether we are using sygus types */
bool d_use_sygus_type;
/** pointer to the quantifiers engine, used if d_use_sygus is true */
QuantifiersEngine* d_qe;
/** the sygus term database of d_qe */
TermDbSygus* d_tds;
/** candidate rewrite database */
CandidateRewriteDatabase d_crd;
/** query generator */
QueryGenerator d_qg;
/** sygus sampler object */
SygusSampler d_sampler;
/** extended rewriter object */
ExtendedRewriter d_ext_rew;
};
} // namespace quantifiers
} // namespace theory
} // namespace CVC4
#endif /* __CVC4__THEORY__QUANTIFIERS__EXPR_MINER_MANAGER_H */
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