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 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 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 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
