1 /* 2 * Copyright (C) 2017 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 #include "Location.h" 18 19 #include <android-base/logging.h> 20 21 namespace android { 22 23 Position::Position(std::string filename, size_t line, size_t column) 24 : mFilename(filename), mLine(line), mColumn(column) {} 25 26 const std::string& Position::filename() const { 27 return mFilename; 28 } 29 30 size_t Position::line() const { 31 return mLine; 32 } 33 34 size_t Position::column() const { 35 return mColumn; 36 } 37 38 bool Position::inSameFile(const Position& lhs, const Position& rhs) { 39 return lhs.mFilename == rhs.mFilename; 40 } 41 42 bool Position::operator<(const Position& pos) const { 43 CHECK(inSameFile(*this, pos)) << "Cannot compare positions in different files"; 44 if (mLine == pos.mLine) { 45 return mColumn < pos.mColumn; 46 } 47 return mLine < pos.mLine; 48 } 49 50 std::ostream& operator<<(std::ostream& ostr, const Position& pos) { 51 if (!pos.filename().empty()) { 52 ostr << pos.filename() << ":"; 53 } 54 return ostr << pos.line() << "." << pos.column(); 55 } 56 57 //////////////////////////////////////// 58 59 Location::Location(const Position& begin, const Position& end) 60 : mIsValid(true), mBegin(begin), mEnd(end) {} 61 62 void Location::setLocation(const Position& begin, const Position& end) { 63 mIsValid = true; 64 mBegin = begin; 65 mEnd = end; 66 } 67 68 bool Location::isValid() const { 69 return mIsValid; 70 } 71 72 const Position& Location::begin() const { 73 return mBegin; 74 } 75 76 const Position& Location::end() const { 77 return mEnd; 78 } 79 80 Location Location::startOf(const std::string& path) { 81 return Location(Position(path, 1, 1), Position(path, 1, 1)); 82 } 83 84 bool Location::inSameFile(const Location& lhs, const Location& rhs) { 85 return Position::inSameFile(lhs.mBegin, rhs.mBegin); 86 } 87 88 bool Location::intersect(const Location& lhs, const Location& rhs) { 89 if (!inSameFile(lhs, rhs)) return false; 90 return !(lhs.mEnd < rhs.mBegin || rhs.mEnd < lhs.mBegin); 91 } 92 93 bool Location::operator<(const Location& loc) const { 94 CHECK(inSameFile(*this, loc)) << "Cannot compare locations in different files"; 95 CHECK(!intersect(*this, loc)); 96 return mEnd < loc.mBegin; 97 } 98 99 std::ostream& operator<<(std::ostream& ostr, const Location& loc) { 100 Position last = Position(loc.end().filename(), loc.end().line(), 101 std::max<size_t>(1u, loc.end().column() - 1)); 102 ostr << loc.begin(); 103 if (loc.begin().filename() != last.filename()) { 104 ostr << "-" << last; 105 } else if (loc.begin().line() != last.line()) { 106 ostr << "-" << last.line() << "." << last.column(); 107 } else if (loc.begin().column() != last.column()) { 108 ostr << "-" << last.column(); 109 } 110 return ostr; 111 } 112 113 } // namespace android 114
