1 // Copyright 2017 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef TESTING_RANGE_SET_H_ 6 #define TESTING_RANGE_SET_H_ 7 8 #include <stddef.h> 9 10 #include <set> 11 #include <utility> 12 13 class RangeSet { 14 public: 15 using Range = std::pair<size_t, size_t>; 16 17 RangeSet(); 18 ~RangeSet(); 19 20 bool Contains(const Range& range) const; 21 22 void Union(const Range& range); 23 24 void Union(const RangeSet& range_set); 25 26 bool IsEmpty() const { return ranges().empty(); } 27 28 void Clear() { ranges_.clear(); } 29 30 struct range_compare { 31 bool operator()(const Range& lval, const Range& rval) const { 32 return lval.first < rval.first; 33 } 34 }; 35 36 using RangesContainer = std::set<Range, range_compare>; 37 const RangesContainer& ranges() const { return ranges_; } 38 39 private: 40 Range FixDirection(const Range& range) const; 41 42 bool IsEmptyRange(const Range& range) const; 43 44 RangesContainer ranges_; 45 }; 46 47 #endif // TESTING_RANGE_SET_H_ 48
