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
Position(std::string filename,size_t line,size_t column)23 Position::Position(std::string filename, size_t line, size_t column)
24 : mFilename(filename), mLine(line), mColumn(column) {}
25
filename() const26 const std::string& Position::filename() const {
27 return mFilename;
28 }
29
line() const30 size_t Position::line() const {
31 return mLine;
32 }
33
column() const34 size_t Position::column() const {
35 return mColumn;
36 }
37
inSameFile(const Position & lhs,const Position & rhs)38 bool Position::inSameFile(const Position& lhs, const Position& rhs) {
39 return lhs.mFilename == rhs.mFilename;
40 }
41
operator <(const Position & pos) const42 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
operator <<(std::ostream & ostr,const Position & pos)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
Location(const Position & begin,const Position & end)59 Location::Location(const Position& begin, const Position& end)
60 : mIsValid(true), mBegin(begin), mEnd(end) {}
61
setLocation(const Position & begin,const Position & end)62 void Location::setLocation(const Position& begin, const Position& end) {
63 mIsValid = true;
64 mBegin = begin;
65 mEnd = end;
66 }
67
isValid() const68 bool Location::isValid() const {
69 return mIsValid;
70 }
71
begin() const72 const Position& Location::begin() const {
73 return mBegin;
74 }
75
end() const76 const Position& Location::end() const {
77 return mEnd;
78 }
79
startOf(const std::string & path)80 Location Location::startOf(const std::string& path) {
81 return Location(Position(path, 1, 1), Position(path, 1, 1));
82 }
83
inSameFile(const Location & lhs,const Location & rhs)84 bool Location::inSameFile(const Location& lhs, const Location& rhs) {
85 return Position::inSameFile(lhs.mBegin, rhs.mBegin);
86 }
87
intersect(const Location & lhs,const Location & rhs)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
operator <(const Location & loc) const93 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
operator <<(std::ostream & ostr,const Location & loc)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