1 /*
2  * Copyright (C) 2015 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 AAPT_SOURCE_H
18 #define AAPT_SOURCE_H
19 
20 #include <ostream>
21 #include <string>
22 
23 #include "androidfw/StringPiece.h"
24 
25 #include "util/Maybe.h"
26 
27 namespace aapt {
28 
29 /**
30  * Represents a file on disk. Used for logging and
31  * showing errors.
32  */
33 struct Source {
34   std::string path;
35   Maybe<size_t> line;
36 
37   Source() = default;
38 
SourceSource39   inline Source(const android::StringPiece& path) : path(path.to_string()) {  // NOLINT(implicit)
40   }
41 
SourceSource42   inline Source(const android::StringPiece& path, size_t line)
43       : path(path.to_string()), line(line) {}
44 
WithLineSource45   inline Source WithLine(size_t line) const { return Source(path, line); }
46 };
47 
48 //
49 // Implementations
50 //
51 
52 inline ::std::ostream& operator<<(::std::ostream& out, const Source& source) {
53   out << source.path;
54   if (source.line) {
55     out << ":" << source.line.value();
56   }
57   return out;
58 }
59 
60 inline bool operator==(const Source& lhs, const Source& rhs) {
61   return lhs.path == rhs.path && lhs.line == rhs.line;
62 }
63 
64 inline bool operator<(const Source& lhs, const Source& rhs) {
65   int cmp = lhs.path.compare(rhs.path);
66   if (cmp < 0) return true;
67   if (cmp > 0) return false;
68   if (lhs.line) {
69     if (rhs.line) {
70       return lhs.line.value() < rhs.line.value();
71     }
72     return false;
73   }
74   return bool(rhs.line);
75 }
76 
77 }  // namespace aapt
78 
79 #endif  // AAPT_SOURCE_H
80