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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef LIBTEXTCLASSIFIER_UTILS_CODEPOINT_RANGE_H_
     18 #define LIBTEXTCLASSIFIER_UTILS_CODEPOINT_RANGE_H_
     19 
     20 #include <vector>
     21 
     22 #include "utils/base/integral_types.h"
     23 #include "utils/codepoint-range_generated.h"
     24 
     25 namespace libtextclassifier3 {
     26 
     27 // Represents a codepoint range [start, end).
     28 struct CodepointRangeStruct {
     29   int32 start;
     30   int32 end;
     31 
     32   CodepointRangeStruct(int32 arg_start, int32 arg_end)
     33       : start(arg_start), end(arg_end) {}
     34 };
     35 
     36 // Returns a sorted list of the codepoint (also converts the flatbuffer to
     37 // struct).
     38 void SortCodepointRanges(
     39     const std::vector<const CodepointRange*>& codepoint_ranges,
     40     std::vector<CodepointRangeStruct>* sorted_codepoint_ranges);
     41 
     42 // Returns true if given codepoint is covered by the given sorted vector of
     43 // codepoint ranges.
     44 bool IsCodepointInRanges(
     45     int codepoint, const std::vector<CodepointRangeStruct>& codepoint_ranges);
     46 
     47 }  // namespace libtextclassifier3
     48 
     49 #endif  // LIBTEXTCLASSIFIER_UTILS_CODEPOINT_RANGE_H_
     50