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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_LOCAL_SEARCH_SERVICE_SEARCH_UTILS_H_
#define CHROMEOS_ASH_COMPONENTS_LOCAL_SEARCH_SERVICE_SEARCH_UTILS_H_
#include <string>
namespace ash::local_search_service {
struct Result;
// Score is non-zero if |query| is a prefix of |text|. No case normalization is
// done.
float ExactPrefixMatchScore(const std::u16string& query,
const std::u16string& text);
// Returns block matching ratio between |query| and |text|. No case
// normalization is done.
float BlockMatchScore(const std::u16string& query, const std::u16string& text);
// If the query's prefix score and block matching score are both below the
// corresponding thresholds, then this returns zero. Otherwise, returns the
// higher of the two scores, which will be in [0,1].
float RelevanceCoefficient(const std::u16string& query,
const std::u16string& text,
float prefix_threshold,
float block_threshold);
// Returns whether |r1| score is higher than |r2|'s.
bool CompareResults(const Result& r1, const Result& r2);
} // namespace ash::local_search_service
#endif // CHROMEOS_ASH_COMPONENTS_LOCAL_SEARCH_SERVICE_SEARCH_UTILS_H_
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