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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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* Preprocess equality rewriter for arithmetic |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__THEORY__ARITH__PP_REWRITE_EQ__H |
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#define CVC5__THEORY__ARITH__PP_REWRITE_EQ__H |
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#include "context/context.h" |
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#include "expr/node.h" |
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#include "proof/eager_proof_generator.h" |
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#include "proof/proof_node_manager.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 arith { |
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/** |
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* This class is responsible for rewriting arithmetic equalities based on the |
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* current options. |
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* |
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* In particular, we may rewrite (= x y) to (and (>= x y) (<= x y)). |
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*/ |
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class PreprocessRewriteEq : protected EnvObj |
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{ |
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public: |
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PreprocessRewriteEq(Env& env); |
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~PreprocessRewriteEq() {} |
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/** |
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* Preprocess equality, applies ppRewrite for equalities. This method is |
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* distinct from ppRewrite since it is not allowed to construct lemmas. |
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*/ |
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TrustNode ppRewriteEq(TNode eq); |
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private: |
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/** Used to prove pp-rewrites */ |
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EagerProofGenerator d_ppPfGen; |
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}; |
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} // namespace arith |
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} // namespace theory |
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} // namespace cvc5 |
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#endif |