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+/********************* */
+/*! \file ite_removal.h
+ ** \verbatim
+ ** Original author: Dejan Jovanovic
+ ** Major contributors: Kshitij Bansal, Tim King, Morgan Deters
+ ** Minor contributors (to current version): Clark Barrett
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2014 New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Removal of term ITEs
+ **
+ ** Removal of term ITEs.
+ **/
+
+#include "cvc4_private.h"
+
+#pragma once
+
+#include <vector>
+
+#include "context/cdinsert_hashmap.h"
+#include "context/context.h"
+#include "expr/node.h"
+#include "smt_util/dump.h"
+#include "util/bool.h"
+#include "util/hash.h"
+
+namespace CVC4 {
+
+namespace theory {
+ class ContainsTermITEVisitor;
+}/* CVC4::theory namespace */
+
+typedef std::hash_map<Node, unsigned, NodeHashFunction> IteSkolemMap;
+
+class RemoveITE {
+ typedef context::CDInsertHashMap< std::pair<Node, bool>, Node, PairHashFunction<Node, bool, NodeHashFunction, BoolHashFunction> > ITECache;
+ ITECache d_iteCache;
+
+
+public:
+
+ RemoveITE(context::UserContext* u);
+ ~RemoveITE();
+
+ /**
+ * Removes the ITE nodes by introducing skolem variables. All
+ * additional assertions are pushed into assertions. iteSkolemMap
+ * contains a map from introduced skolem variables to the index in
+ * assertions containing the new Boolean ite created in conjunction
+ * with that skolem variable.
+ *
+ * With reportDeps true, report reasoning dependences to the proof
+ * manager (for unsat cores).
+ */
+ void run(std::vector<Node>& assertions, IteSkolemMap& iteSkolemMap, bool reportDeps = false);
+
+ /**
+ * Removes the ITE from the node by introducing skolem
+ * variables. All additional assertions are pushed into
+ * assertions. iteSkolemMap contains a map from introduced skolem
+ * variables to the index in assertions containing the new Boolean
+ * ite created in conjunction with that skolem variable.
+ */
+ Node run(TNode node, std::vector<Node>& additionalAssertions,
+ IteSkolemMap& iteSkolemMap, bool inQuant);
+
+ /**
+ * Substitute under node using pre-existing cache. Do not remove
+ * any ITEs not seen during previous runs.
+ */
+ Node replace(TNode node, bool inQuant = false) const;
+
+ /** Returns true if e contains a term ite. */
+ bool containsTermITE(TNode e) const;
+
+ /** Returns the collected size of the caches. */
+ size_t collectedCacheSizes() const;
+
+ /** Garbage collects non-context dependent data-structures. */
+ void garbageCollect();
+
+ /** Return the RemoveITE's containsVisitor. */
+ theory::ContainsTermITEVisitor* getContainsVisitor();
+
+private:
+ theory::ContainsTermITEVisitor* d_containsVisitor;
+
+};/* class RemoveTTE */
+
+}/* CVC4 namespace */
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