src/common/range_spec.h

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */

#pragma once

#include <string>

#include "status.h"

struct RangeLexSpec {
  std::string min, max;
  bool minex = false, maxex = false; /* are min or max exclusive */
  bool max_infinite = false;         /* are max infinite */
  int64_t offset = -1, count = -1;
  bool with_deletion = false, reversed = false;
  explicit RangeLexSpec() = default;
};

Status ParseRangeLexSpec(const std::string &min, const std::string &max, RangeLexSpec *spec);

struct RangeRankSpec {
  int start = 0, stop = -1;
  bool with_deletion = false, reversed = false;
  explicit RangeRankSpec() = default;
};

Status ParseRangeRankSpec(const std::string &min, const std::string &max, RangeRankSpec *spec);

const double kMinScore = (std::numeric_limits<float>::is_iec559 ? -std::numeric_limits<double>::infinity()
                                                                : std::numeric_limits<double>::lowest());
const double kMaxScore = (std::numeric_limits<float>::is_iec559 ? std::numeric_limits<double>::infinity()
                                                                : std::numeric_limits<double>::max());

struct RangeScoreSpec {
  double min = kMinScore, max = kMaxScore;
  bool minex = false, maxex = false; /* are min or max exclusive */
  int64_t offset = -1, count = -1;
  bool with_deletion = false, reversed = false;
  explicit RangeScoreSpec() = default;
};

Status ParseRangeScoreSpec(const std::string &min, const std::string &max, RangeScoreSpec *spec);