chromium/third_party/re2/src/re2/prefilter_tree.h

// Copyright 2009 The RE2 Authors.  All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#ifndef RE2_PREFILTER_TREE_H_
#define RE2_PREFILTER_TREE_H_

// The PrefilterTree class is used to form an AND-OR tree of strings
// that would trigger each regexp. The 'prefilter' of each regexp is
// added to PrefilterTree, and then PrefilterTree is used to find all
// the unique strings across the prefilters. During search, by using
// matches from a string matching engine, PrefilterTree deduces the
// set of regexps that are to be triggered. The 'string matching
// engine' itself is outside of this class, and the caller can use any
// favorite engine. PrefilterTree provides a set of strings (called
// atoms) that the user of this class should use to do the string
// matching.

#include <string>
#include <vector>

#include "absl/container/flat_hash_set.h"
#include "absl/log/absl_check.h"
#include "absl/log/absl_log.h"
#include "re2/prefilter.h"
#include "re2/sparse_array.h"

namespace re2 {

class PrefilterTree { … };

}  // namespace

#endif  // RE2_PREFILTER_TREE_H_