Initial commit of Hyperscan

src/nfa/rdfa_merge.h

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+/*
+ * 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 Merge code for McClellan DFA.
+ */
+
+#ifndef RDFA_MERGE_H
+#define RDFA_MERGE_H
+
+#include <memory>
+#include <vector>
+
+namespace ue2 {
+
+class ReportManager;
+struct raw_dfa;
+struct Grey;
+
+/** \brief Attempts to merge two raw_dfas into one. */
+std::unique_ptr<raw_dfa> mergeTwoDfas(const raw_dfa *d1, const raw_dfa *d2,
+                                      size_t max_states, const ReportManager *rm,
+                                      const Grey &grey);
+
+/** \brief Attempts to merge all the given raw_dfas into one. */
+std::unique_ptr<raw_dfa> mergeAllDfas(const std::vector<const raw_dfa *> &dfas,
+                                      size_t max_states,
+                                      const ReportManager *rm,
+                                      const Grey &grey);
+
+/** \brief Merges the given list of raw_dfas as much as possible in-place. */
+void mergeDfas(std::vector<std::unique_ptr<raw_dfa>> &dfas, size_t max_states,
+               const ReportManager *rm, const Grey &grey);
+
+} // namespace ue2
+
+#endif // RDFA_MERGE_H