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/****************************************************************************** |
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* Top contributors (to current version): |
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* Mudathir Mohamed, Gereon Kremer |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* Bags state object. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__THEORY__BAGS__TERM_REGISTRY_H |
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#define CVC5__THEORY__BAGS__TERM_REGISTRY_H |
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#include <map> |
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#include "context/cdhashmap.h" |
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#include "expr/node.h" |
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#include "smt/env_obj.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace bags { |
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class InferenceManager; |
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class SolverState; |
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/** |
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* Term registry, the purpose of this class is to maintain a database of |
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* commonly used terms, and mappings from bags to their "proxy variables". |
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*/ |
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class TermRegistry : protected EnvObj |
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{ |
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typedef context::CDHashMap<Node, Node> NodeMap; |
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public: |
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TermRegistry(Env& env, SolverState& state, InferenceManager& im); |
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/** |
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* Returns the existing empty bag for type tn |
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* or creates a new one and returns it. |
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**/ |
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Node getEmptyBag(TypeNode tn); |
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private: |
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/** The inference manager */ |
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InferenceManager& d_im; |
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/** Map from bag terms to their proxy variables */ |
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NodeMap d_proxy; |
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/** Backwards map of above */ |
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NodeMap d_proxy_to_term; |
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/** Map from types to empty bag of that type */ |
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std::map<TypeNode, Node> d_emptybag; |
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}; /* class Term */ |
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} // namespace bags |
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} // namespace theory |
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} // namespace cvc5 |
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#endif /* CVC5__THEORY__BAGS__TERM_REGISTRY_H */ |