1 // Copyright 2018 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 #include "mojo/public/cpp/base/values_mojom_traits.h"
6
7 #include <memory>
8 #include <utility>
9
10 #include "base/strings/string_piece.h"
11
12 namespace mojo {
13
Read(mojo_base::mojom::DictionaryValueDataView data,base::Value * value_out)14 bool StructTraits<mojo_base::mojom::DictionaryValueDataView, base::Value>::Read(
15 mojo_base::mojom::DictionaryValueDataView data,
16 base::Value* value_out) {
17 mojo::MapDataView<mojo::StringDataView, mojo_base::mojom::ValueDataView> view;
18 data.GetStorageDataView(&view);
19 std::vector<base::Value::DictStorage::value_type> dict_storage;
20 dict_storage.reserve(view.size());
21 for (size_t i = 0; i < view.size(); ++i) {
22 base::StringPiece key;
23 auto value = std::make_unique<base::Value>();
24 if (!view.keys().Read(i, &key) || !view.values().Read(i, value.get()))
25 return false;
26 dict_storage.emplace_back(key.as_string(), std::move(value));
27 }
28 *value_out = base::Value(base::Value::DictStorage(std::move(dict_storage),
29 base::KEEP_LAST_OF_DUPES));
30 return true;
31 }
32
Read(mojo_base::mojom::ListValueDataView data,base::Value * value_out)33 bool StructTraits<mojo_base::mojom::ListValueDataView, base::Value>::Read(
34 mojo_base::mojom::ListValueDataView data,
35 base::Value* value_out) {
36 mojo::ArrayDataView<mojo_base::mojom::ValueDataView> view;
37 data.GetStorageDataView(&view);
38 base::Value::ListStorage list_storage(view.size());
39 for (size_t i = 0; i < view.size(); ++i) {
40 if (!view.Read(i, &list_storage[i]))
41 return false;
42 }
43 *value_out = base::Value(std::move(list_storage));
44 return true;
45 }
46
Read(mojo_base::mojom::ValueDataView data,base::Value * value_out)47 bool UnionTraits<mojo_base::mojom::ValueDataView, base::Value>::Read(
48 mojo_base::mojom::ValueDataView data,
49 base::Value* value_out) {
50 switch (data.tag()) {
51 case mojo_base::mojom::ValueDataView::Tag::NULL_VALUE: {
52 *value_out = base::Value();
53 return true;
54 }
55 case mojo_base::mojom::ValueDataView::Tag::BOOL_VALUE: {
56 *value_out = base::Value(data.bool_value());
57 return true;
58 }
59 case mojo_base::mojom::ValueDataView::Tag::INT_VALUE: {
60 *value_out = base::Value(data.int_value());
61 return true;
62 }
63 case mojo_base::mojom::ValueDataView::Tag::DOUBLE_VALUE: {
64 *value_out = base::Value(data.double_value());
65 return true;
66 }
67 case mojo_base::mojom::ValueDataView::Tag::STRING_VALUE: {
68 base::StringPiece string_piece;
69 if (!data.ReadStringValue(&string_piece))
70 return false;
71 *value_out = base::Value(string_piece);
72 return true;
73 }
74 case mojo_base::mojom::ValueDataView::Tag::BINARY_VALUE: {
75 mojo::ArrayDataView<uint8_t> binary_data_view;
76 data.GetBinaryValueDataView(&binary_data_view);
77 const char* data_pointer =
78 reinterpret_cast<const char*>(binary_data_view.data());
79 base::Value::BlobStorage blob_storage(
80 data_pointer, data_pointer + binary_data_view.size());
81 *value_out = base::Value(std::move(blob_storage));
82 return true;
83 }
84 case mojo_base::mojom::ValueDataView::Tag::DICTIONARY_VALUE: {
85 return data.ReadDictionaryValue(value_out);
86 }
87 case mojo_base::mojom::ValueDataView::Tag::LIST_VALUE: {
88 return data.ReadListValue(value_out);
89 }
90 }
91 return false;
92 }
93
94 } // namespace mojo
95