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/********************* */
/*! \file decision_manager.cpp
** \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 Implementation of Decision manager, which manages all decision
** strategies owned by theory solvers within TheoryEngine.
**/
#include "theory/decision_manager.h"
#include "theory/rewriter.h"
using namespace CVC4::kind;
namespace CVC4 {
namespace theory {
DecisionManager::DecisionManager(context::Context* satContext) {}
void DecisionManager::reset()
{
Trace("dec-manager") << "DecisionManager: reset." << std::endl;
d_reg_strategy.clear();
}
void DecisionManager::registerStrategy(StrategyId id, DecisionStrategy* ds)
{
Trace("dec-manager") << "DecisionManager: Register strategy : "
<< ds->identify() << ", id = " << id << std::endl;
ds->initialize();
d_reg_strategy[id].push_back(ds);
}
Node DecisionManager::getNextDecisionRequest(unsigned& priority)
{
Trace("dec-manager-debug")
<< "DecisionManager: Get next decision..." << std::endl;
for (const std::pair<StrategyId, std::vector<DecisionStrategy*> >& rs :
d_reg_strategy)
{
for (unsigned i = 0, size = rs.second.size(); i < size; i++)
{
DecisionStrategy* ds = rs.second[i];
Node lit = ds->getNextDecisionRequest();
if (!lit.isNull())
{
StrategyId sid = rs.first;
priority = sid < STRAT_LAST_M_SOUND
? 0
: (sid < STRAT_LAST_FM_COMPLETE ? 1 : 2);
Trace("dec-manager")
<< "DecisionManager: -> literal " << lit << " decided by strategy "
<< ds->identify() << std::endl;
return lit;
}
Trace("dec-manager-debug") << "DecisionManager: " << ds->identify()
<< " has no decisions." << std::endl;
}
}
Trace("dec-manager-debug")
<< "DecisionManager: -> no decisions." << std::endl;
return Node::null();
}
} // namespace theory
} // namespace CVC4
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