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/******************************************************************************
* Top contributors (to current version):
* Andrew Reynolds, Morgan Deters
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 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.
* ****************************************************************************
*
* The quantifiers registry.
*/
#include "theory/quantifiers/quantifiers_registry.h"
#include "options/quantifiers_options.h"
#include "theory/quantifiers/quant_module.h"
#include "theory/quantifiers/term_util.h"
namespace cvc5 {
namespace theory {
namespace quantifiers {
QuantifiersRegistry::QuantifiersRegistry(Env& env)
: QuantifiersUtil(env),
d_quantAttr(),
d_quantBoundInf(options::fmfTypeCompletionThresh(),
options::finiteModelFind()),
d_quantPreproc(env)
{
}
void QuantifiersRegistry::registerQuantifier(Node q)
{
if (d_inst_constants.find(q) != d_inst_constants.end())
{
return;
}
NodeManager* nm = NodeManager::currentNM();
Debug("quantifiers-engine")
<< "Instantiation constants for " << q << " : " << std::endl;
for (size_t i = 0, nvars = q[0].getNumChildren(); i < nvars; i++)
{
d_vars[q].push_back(q[0][i]);
// make instantiation constants
Node ic = nm->mkInstConstant(q[0][i].getType());
d_inst_constants_map[ic] = q;
d_inst_constants[q].push_back(ic);
Debug("quantifiers-engine") << " " << ic << std::endl;
// set the var number attribute
InstVarNumAttribute ivna;
ic.setAttribute(ivna, i);
InstConstantAttribute ica;
ic.setAttribute(ica, q);
}
// compute attributes
d_quantAttr.computeAttributes(q);
}
bool QuantifiersRegistry::reset(Theory::Effort e) { return true; }
std::string QuantifiersRegistry::identify() const
{
return "QuantifiersRegistry";
}
QuantifiersModule* QuantifiersRegistry::getOwner(Node q) const
{
std::map<Node, QuantifiersModule*>::const_iterator it = d_owner.find(q);
if (it == d_owner.end())
{
return nullptr;
}
return it->second;
}
void QuantifiersRegistry::setOwner(Node q,
QuantifiersModule* m,
int32_t priority)
{
QuantifiersModule* mo = getOwner(q);
if (mo == m)
{
return;
}
if (mo != nullptr)
{
if (priority <= d_owner_priority[q])
{
Trace("quant-warn") << "WARNING: setting owner of " << q << " to "
<< (m ? m->identify() : "null")
<< ", but already has owner " << mo->identify()
<< " with higher priority!" << std::endl;
return;
}
}
d_owner[q] = m;
d_owner_priority[q] = priority;
}
bool QuantifiersRegistry::hasOwnership(Node q, QuantifiersModule* m) const
{
QuantifiersModule* mo = getOwner(q);
return mo == m || mo == nullptr;
}
Node QuantifiersRegistry::getInstantiationConstant(Node q, size_t i) const
{
std::map<Node, std::vector<Node> >::const_iterator it =
d_inst_constants.find(q);
if (it != d_inst_constants.end())
{
return it->second[i];
}
return Node::null();
}
size_t QuantifiersRegistry::getNumInstantiationConstants(Node q) const
{
std::map<Node, std::vector<Node> >::const_iterator it =
d_inst_constants.find(q);
if (it != d_inst_constants.end())
{
return it->second.size();
}
return 0;
}
Node QuantifiersRegistry::getInstConstantBody(Node q)
{
std::map<Node, Node>::const_iterator it = d_inst_const_body.find(q);
if (it == d_inst_const_body.end())
{
Node n = substituteBoundVariablesToInstConstants(q[1], q);
d_inst_const_body[q] = n;
return n;
}
return it->second;
}
Node QuantifiersRegistry::substituteBoundVariablesToInstConstants(Node n,
Node q)
{
registerQuantifier(q);
return n.substitute(d_vars[q].begin(),
d_vars[q].end(),
d_inst_constants[q].begin(),
d_inst_constants[q].end());
}
Node QuantifiersRegistry::substituteInstConstantsToBoundVariables(Node n,
Node q)
{
registerQuantifier(q);
return n.substitute(d_inst_constants[q].begin(),
d_inst_constants[q].end(),
d_vars[q].begin(),
d_vars[q].end());
}
Node QuantifiersRegistry::substituteBoundVariables(Node n,
Node q,
std::vector<Node>& terms)
{
registerQuantifier(q);
Assert(d_vars[q].size() == terms.size());
return n.substitute(
d_vars[q].begin(), d_vars[q].end(), terms.begin(), terms.end());
}
Node QuantifiersRegistry::substituteInstConstants(Node n,
Node q,
std::vector<Node>& terms)
{
registerQuantifier(q);
Assert(d_inst_constants[q].size() == terms.size());
return n.substitute(d_inst_constants[q].begin(),
d_inst_constants[q].end(),
terms.begin(),
terms.end());
}
QuantAttributes& QuantifiersRegistry::getQuantAttributes()
{
return d_quantAttr;
}
QuantifiersBoundInference& QuantifiersRegistry::getQuantifiersBoundInference()
{
return d_quantBoundInf;
}
QuantifiersPreprocess& QuantifiersRegistry::getPreprocess()
{
return d_quantPreproc;
}
Node QuantifiersRegistry::getNameForQuant(Node q) const
{
Node name = d_quantAttr.getQuantName(q);
if (!name.isNull())
{
return name;
}
return q;
}
bool QuantifiersRegistry::getNameForQuant(Node q, Node& name, bool req) const
{
name = getNameForQuant(q);
// if we have a name, or we did not require one
return name != q || !req;
}
} // namespace quantifiers
} // namespace theory
} // namespace cvc5
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