1 /* 2 * Copyright (C) 2011 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 #ifndef RANGE_H 17 #define RANGE_H 18 19 #include <vector> 20 21 class Range { 22 23 public: 24 Range():m_start(0),m_end(0),m_size(0){}; 25 Range(int start,int size):m_start(start),m_end(start+size),m_size(size){}; 26 Range(const Range& r):m_start(r.m_start),m_end(r.m_end),m_size(r.m_size){}; 27 void setRange(int start,int size){m_start = start; m_end = start+size; m_size = size;}; 28 inline int getStart() const{return m_start;}; 29 inline int getEnd() const{return m_end;}; 30 inline int getSize() const{return m_size;}; 31 Range& operator=(const Range& r) { 32 m_start = r.m_start; 33 m_end = r.m_end; 34 m_size = r.m_size; 35 return *this; 36 } 37 bool operator ==(const Range& r) const { 38 return m_start == r.m_start && m_size == r.m_size && m_end == r.m_end; 39 } 40 bool operator !=(const Range& r) const {return !((*this) == r);}; 41 bool rangeIntersection(const Range& r,Range& rOut) const ; 42 bool rangeUnion(const Range& r,Range& rOut) const ; 43 44 private: 45 int m_start; 46 int m_end; 47 int m_size; 48 }; 49 50 class RangeList { 51 public: 52 void addRange(const Range& r); 53 void addRanges(const RangeList& rl); 54 void delRange(const Range& r,RangeList& deleted); 55 void delRanges(const RangeList& rl,RangeList& deleted); 56 bool empty() const; 57 void merge(); 58 int size() const; 59 void clear(); 60 Range& operator[](unsigned int i){return list[i];}; 61 private: 62 void erase(unsigned int i); 63 std::vector<Range> list; 64 }; 65 66 67 68 69 #endif 70
