1 /* 2 * Copyright (C) 2016 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 LOCATION_H_ 18 #define LOCATION_H_ 19 20 #include <iostream> 21 #include <stdint.h> 22 #include <string> 23 24 // Mimics for yy::location and yy::position 25 namespace android { 26 27 struct Position { 28 Position(std::string f, size_t l, size_t c) 29 : mFilename(f), mLine(l), mColumn(c) {} 30 inline const std::string &filename() const { return mFilename; } 31 inline size_t line() const { return mLine; } 32 inline size_t column() const { return mColumn; } 33 34 private: 35 // File name to which this position refers. 36 const std::string mFilename; 37 // Current line number. 38 const size_t mLine; 39 // Current column number. 40 const size_t mColumn; 41 }; 42 43 inline std::ostream& operator<< (std::ostream& ostr, const Position& pos) { 44 if (!pos.filename().empty()) { 45 ostr << pos.filename() << ":"; 46 } 47 return ostr << pos.line() << "." << pos.column(); 48 } 49 50 struct Location { 51 Location (Position begin, Position end) 52 : mBegin(begin), mEnd(end) {} 53 inline const Position &begin() const { return mBegin; } 54 inline const Position &end() const { return mEnd; } 55 56 inline static Location startOf(const std::string &path) { 57 return Location(Position(path, 1, 1), Position(path, 1, 1)); 58 } 59 60 private: 61 // Beginning of the located region. 62 const Position mBegin; 63 // End of the located region. 64 const Position mEnd; 65 }; 66 67 inline std::ostream& operator<< (std::ostream& ostr, const Location& loc) { 68 Position last = Position(loc.end().filename(), 69 loc.end().line(), 70 std::max<size_t>(1u, loc.end().column() - 1)); 71 ostr << loc.begin(); 72 if (loc.begin().filename() != last.filename()) { 73 ostr << "-" << last; 74 } else if (loc.begin().line() != last.line()) { 75 ostr << "-" << last.line() << "." << last.column(); 76 } else if (loc.begin().column() != last.column()) { 77 ostr << "-" << last.column(); 78 } 79 return ostr; 80 } 81 82 } // namespace android 83 84 #endif 85
