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/****************************************************************************** |
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* Top contributors (to current version): |
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* Dejan Jovanovic, Tim King, Morgan Deters |
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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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* Rewriter attributes. |
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*/ |
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#include "cvc5_private.h" |
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#pragma once |
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#include "expr/attribute.h" |
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namespace cvc5 { |
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namespace theory { |
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template <bool pre, theory::TheoryId theoryId> |
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struct RewriteCacheTag {}; |
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template <theory::TheoryId theoryId> |
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struct RewriteAttibute { |
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typedef expr::Attribute< RewriteCacheTag<true, theoryId>, Node> pre_rewrite; |
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typedef expr::Attribute< RewriteCacheTag<false, theoryId>, Node> post_rewrite; |
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/** |
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* Get the value of the pre-rewrite cache. |
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*/ |
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static Node getPreRewriteCache(TNode node) |
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{ |
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Node cache; |
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if (node.hasAttribute(pre_rewrite())) { |
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node.getAttribute(pre_rewrite(), cache); |
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} else { |
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return Node::null(); |
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} |
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if (cache.isNull()) { |
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return node; |
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} else { |
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return cache; |
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} |
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} |
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/** |
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* Set the value of the pre-rewrite cache. |
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*/ |
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static void setPreRewriteCache(TNode node, TNode cache) |
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{ |
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Trace("rewriter") << "setting pre-rewrite of " << node << " to " << cache << std::endl; |
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Assert(!cache.isNull()); |
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if (node == cache) { |
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node.setAttribute(pre_rewrite(), Node::null()); |
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} else { |
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node.setAttribute(pre_rewrite(), cache); |
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} |
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} |
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/** |
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* Get the value of the post-rewrite cache. |
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* none). |
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*/ |
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static Node getPostRewriteCache(TNode node) |
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{ |
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Node cache; |
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if (node.hasAttribute(post_rewrite())) { |
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node.getAttribute(post_rewrite(), cache); |
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} else { |
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return Node::null(); |
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} |
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if (cache.isNull()) { |
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return node; |
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} else { |
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return cache; |
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} |
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} |
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/** |
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* Set the value of the post-rewrite cache. v cannot be a null Node. |
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*/ |
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static void setPostRewriteCache(TNode node, TNode cache) |
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{ |
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Assert(!cache.isNull()); |
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Trace("rewriter") << "setting rewrite of " << node << " to " << cache << std::endl; |
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if (node == cache) { |
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node.setAttribute(post_rewrite(), Node::null()); |
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} else { |
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node.setAttribute(post_rewrite(), cache); |
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} |
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} |
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};/* struct RewriteAttribute */ |
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} // namespace theory |
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} // namespace cvc5 |