1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TOOLS_JSON_SCHEMA_COMPILER_UTIL_H_
#define TOOLS_JSON_SCHEMA_COMPILER_UTIL_H_
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/format_macros.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
namespace json_schema_compiler {
namespace util {
// Populates the item |out| from the value |from|. These are used by template
// specializations of |Get(Optional)ArrayFromList|.
bool PopulateItem(const base::Value& from, base::Value& out);
bool PopulateItem(const base::Value& from, int& out);
bool PopulateItem(const base::Value& from, int& out, std::u16string& error);
bool PopulateItem(const base::Value& from, bool& out);
bool PopulateItem(const base::Value& from, bool& out, std::u16string& error);
bool PopulateItem(const base::Value& from, double& out);
bool PopulateItem(const base::Value& from, double& out, std::u16string& error);
bool PopulateItem(const base::Value& from, std::string& out);
bool PopulateItem(const base::Value& from,
std::string& out,
std::u16string& error);
bool PopulateItem(const base::Value& from, std::vector<uint8_t>& out);
bool PopulateItem(const base::Value& from,
std::vector<uint8_t>& out,
std::u16string& error);
bool PopulateItem(const base::Value& from,
base::Value& out,
std::u16string& error);
// This template is used for types generated by tools/json_schema_compiler.
template <class T>
bool PopulateItem(const base::Value& from, T& out) {
T obj;
if (!T::Populate(from, obj)) {
return false;
}
out = std::move(obj);
return true;
}
// This template is used for types generated by tools/json_schema_compiler with
// error generation enabled.
template <class T>
bool PopulateItem(const base::Value& from, T& out, std::u16string& error) {
T obj;
if (!T::Populate(from, obj, error)) {
return false;
}
out = std::move(obj);
return true;
}
// Populates |out| with |list|. Returns false if there is no list at the
// specified key or if the list has anything other than |T|.
template <class T>
bool PopulateArrayFromList(const base::Value::List& list, std::vector<T>& out) {
out.clear();
out.reserve(list.size());
T item;
for (const auto& value : list) {
if (!PopulateItem(value, item)) {
return false;
}
// T might not be movable, but in that case it should be copyable, and this
// will still work.
out.push_back(std::move(item));
}
return true;
}
// Populates |out| with |list|. Returns false and sets |error| if there is no
// list at the specified key or if the list has anything other than |T|.
template <class T>
bool PopulateArrayFromList(const base::Value::List& list,
std::vector<T>& out,
std::u16string& error) {
out.clear();
out.reserve(list.size());
T item;
std::u16string item_error;
for (size_t i = 0; i < list.size(); ++i) {
if (!PopulateItem(list[i], item, item_error)) {
DCHECK(error.empty());
error = base::ASCIIToUTF16(
base::StringPrintf("Parsing array failed at index %" PRIuS ": %s", i,
base::UTF16ToASCII(item_error).c_str()));
return false;
}
out.push_back(std::move(item));
}
return true;
}
// Creates a new vector containing |list| at |out|. Returns
// true on success or if there is nothing at the specified key. Returns false
// if anything other than a list of |T| is at the specified key.
template <class T>
bool PopulateOptionalArrayFromList(const base::Value::List& list,
absl::optional<std::vector<T>>& out) {
std::vector<T> populated;
if (!PopulateArrayFromList(list, populated)) {
return false;
}
out = std::move(populated);
return true;
}
template <class T>
bool PopulateOptionalArrayFromList(const base::Value::List& list,
absl::optional<std::vector<T>>& out,
std::u16string& error) {
std::vector<T> populated;
if (!PopulateArrayFromList(list, populated, error)) {
return false;
}
out = std::move(populated);
return true;
}
// Appends a Value newly created from |from| to |out|. These used by template
// specializations of |Set(Optional)ArrayToList|.
void AddItemToList(const int from, base::Value::List& out);
void AddItemToList(const bool from, base::Value::List& out);
void AddItemToList(const double from, base::Value::List& out);
void AddItemToList(const std::string& from, base::Value::List& out);
void AddItemToList(const std::vector<uint8_t>& from, base::Value::List& out);
void AddItemToList(const base::Value& from, base::Value::List& out);
void AddItemToList(const base::Value::Dict& from, base::Value::List& out);
// This template is used for types generated by tools/json_schema_compiler.
template <class T>
void AddItemToList(const std::unique_ptr<T>& from, base::Value::List& out) {
out.Append(from->ToValue());
}
// This template is used for types generated by tools/json_schema_compiler.
template <class T>
void AddItemToList(const T& from, base::Value::List& out) {
out.Append(from.ToValue());
}
// Returns a list matching the contents of |from|. Requires PopulateItem to be
// implemented for |T|.
template <class T>
base::Value::List CreateValueFromArray(const std::vector<T>& from) {
base::Value::List list;
for (const T& item : from) {
AddItemToList(item, list);
}
return list;
}
template <class T>
void AppendToContainer(base::Value::List& container, T&& value) {
container.Append(std::forward<T>(value));
}
template <class C, class T>
void AppendToContainer(std::vector<C>& container, T&& value) {
container.emplace_back(std::forward<T>(value));
}
} // namespace util
} // namespace json_schema_compiler
#endif // TOOLS_JSON_SCHEMA_COMPILER_UTIL_H_
|
