Initial commit of Hyperscan

src/nfagraph/ng_execute.h

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2015, Intel Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *  * Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** \file
+ * \brief Execute an NFA over a given input, returning the set of states that
+ * are active afterwards.
+ */
+
+#ifndef NG_EXECUTE_H
+#define NG_EXECUTE_H
+
+#include "ng_holder.h"
+
+#include <set>
+#include <vector>
+
+namespace ue2 {
+
+class CharReach;
+struct ue2_literal;
+
+void execute_graph(const NGHolder &g, const ue2_literal &input,
+                   std::set<NFAVertex> *states, bool kill_sds = false);
+
+void execute_graph(const NGHolder &g, const std::vector<CharReach> &input,
+                   std::set<NFAVertex> *states);
+
+/** on exit, states contains any state which may still be enabled after
+ * receiving an input which corresponds to some path through the input_dag from
+ * start or startDs to accept. input_dag MUST be acyclic aside from self-loops.
+ */
+void execute_graph(const NGHolder &g, const NGHolder &input_dag,
+                   std::set<NFAVertex> *states);
+
+/* as above, but able to specify the source states for the input graph */
+void execute_graph(const NGHolder &g, const NGHolder &input_dag,
+                   const std::set<NFAVertex> &input_start_states,
+                   std::set<NFAVertex> *states);
+
+} // namespace ue2
+
+#endif