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/** \file
 * \brief Build code for McClellan DFA.
 */

#ifndef NG_MCCLELLAN_H
#define NG_MCCLELLAN_H

#include "ue2common.h"

#include <memory>
#include <vector>

namespace ue2 {

class CharReach;
class NGHolder;
class ReportManager;
struct Grey;
struct raw_dfa;

/**
 * \brief Determinises an NFA Graph into a raw_dfa.
 *
 * \param g
 *      The NGHolder.
 * \param rm
 *      A pointer to the ReportManager, if managed reports are used (e.g.
 *      for outfixes/suffixes). Otherwise nullptr.
 * \param single_trigger
 *      True if it is known that the nfa will only ever be trigger once.
 * \param triggers
 *      Representing when tops may arrive. Only used by NFA_INFIX and
 *      NFA_SUFFIX, should be empty for other types.
 * \param grey
 *      Grey box object.
 * \param finalChance
 *      Allows us to build bigger DFAs as the only alternative is an outfix.
 *
 * \return A raw_dfa, or nullptr on failure (state limit blown).
 */
std::unique_ptr<raw_dfa> buildMcClellan(const NGHolder &g,
                          const ReportManager *rm, bool single_trigger,
                          const std::vector<std::vector<CharReach>> &triggers,
                          const Grey &grey, bool finalChance = false);

/** Convenience wrapper for non-triggered engines */
std::unique_ptr<raw_dfa> buildMcClellan(const NGHolder &g,
                                        const ReportManager *rm,
                                        const Grey &grey);

} // namespace ue2

#endif // NG_MCCLELLAN_H