1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef TOOLS_GN_VALUE_EXTRACTORS_H_
6 #define TOOLS_GN_VALUE_EXTRACTORS_H_
7
8 #include <string>
9 #include <vector>
10
11 #include "tools/gn/target.h"
12 #include "tools/gn/value.h"
13
14 class BuildSettings;
15 class Err;
16 class Label;
17 class SourceDir;
18 class SourceFile;
19
20 // Sets the error and returns false on failure.
21 template<typename T, class Converter>
ListValueExtractor(const Value & value,std::vector<T> * dest,Err * err,const Converter & converter)22 bool ListValueExtractor(const Value& value, std::vector<T>* dest,
23 Err* err,
24 const Converter& converter) {
25 if (!value.VerifyTypeIs(Value::LIST, err))
26 return false;
27 const std::vector<Value>& input_list = value.list_value();
28 dest->resize(input_list.size());
29 for (size_t i = 0; i < input_list.size(); i++) {
30 if (!converter(input_list[i], &(*dest)[i], err))
31 return false;
32 }
33 return true;
34 }
35
36 // On failure, returns false and sets the error.
37 bool ExtractListOfStringValues(const Value& value,
38 std::vector<std::string>* dest,
39 Err* err);
40
41 // Looks for a list of source files relative to a given current dir.
42 bool ExtractListOfRelativeFiles(const BuildSettings* build_settings,
43 const Value& value,
44 const SourceDir& current_dir,
45 std::vector<SourceFile>* files,
46 Err* err);
47
48 // Looks for a list of source directories relative to a given current dir.
49 bool ExtractListOfRelativeDirs(const BuildSettings* build_settings,
50 const Value& value,
51 const SourceDir& current_dir,
52 std::vector<SourceDir>* dest,
53 Err* err);
54
55 // Extracts the list of labels and their origins to the given vector. Only the
56 // labels are filled in, the ptr for each pair in the vector will be null.
57 bool ExtractListOfLabels(const Value& value,
58 const SourceDir& current_dir,
59 const Label& current_toolchain,
60 LabelConfigVector* dest,
61 Err* err);
62 bool ExtractListOfLabels(const Value& value,
63 const SourceDir& current_dir,
64 const Label& current_toolchain,
65 LabelTargetVector* dest,
66 Err* err);
67
68 bool ExtractRelativeFile(const BuildSettings* build_settings,
69 const Value& value,
70 const SourceDir& current_dir,
71 SourceFile* file,
72 Err* err);
73
74 #endif // TOOLS_GN_VALUE_EXTRACTORS_H_
75