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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds |
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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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* Enumerator for functions. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__THEORY__UF__TYPE_ENUMERATOR_H |
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#define CVC5__THEORY__UF__TYPE_ENUMERATOR_H |
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#include "expr/kind.h" |
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#include "expr/type_node.h" |
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#include "theory/type_enumerator.h" |
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#include "util/integer.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace uf { |
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/** FunctionEnumerator |
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* This enumerates function values, based on the enumerator for the |
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* array type corresponding to the given function type. |
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*/ |
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class FunctionEnumerator : public TypeEnumeratorBase<FunctionEnumerator> |
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{ |
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public: |
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FunctionEnumerator(TypeNode type, TypeEnumeratorProperties* tep = nullptr); |
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/** Get the current term of the enumerator. */ |
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Node operator*() override; |
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/** Increment the enumerator. */ |
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FunctionEnumerator& operator++() override; |
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/** is the enumerator finished? */ |
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bool isFinished() override { return d_arrayEnum.isFinished(); } |
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private: |
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/** Enumerates arrays, which we convert to functions. */ |
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TypeEnumerator d_arrayEnum; |
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/** The bound variable list for the function type we are enumerating. |
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* All terms output by this enumerator are of the form (LAMBDA d_bvl t) for |
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* some term t. |
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*/ |
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Node d_bvl; |
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}; /* class FunctionEnumerator */ |
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} // namespace uf |
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} // namespace theory |
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} // namespace cvc5 |
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#endif /* CVC5__THEORY__UF__TYPE_ENUMERATOR_H */ |