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Add ability to store and retrieve a list of MapBuffer

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Summary:
Add ability to store and retrieve a list of MapBuffer as an entry of MapBuffer.

```
Example:

MapBuffer1
{
 key1: "test string",
 key2: MapBuffer2,
 key3: [MapBuffer3, MapBuffer4]
}
```

Changelog:
[General][Added] Add ability to store and retrieve a list of MapBuffer

Reviewed By: JoshuaGross

Differential Revision: D38460204

fbshipit-source-id: 3e721418be2dca6d5f15f665753844d6f531e31c
This commit is contained in:
Lulu Wu
2022-08-11 10:14:38 -07:00
committed by Facebook GitHub Bot
parent 7e580b97bf
commit fc065151ce
8 changed files with 123 additions and 0 deletions
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ReactCommon/react/renderer/mapbuffer/MapBuffer.cpp
+25
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@@ -112,6 +112,31 @@ MapBuffer MapBuffer::getMapBuffer(Key key) const {
return MapBuffer(std::move(value));
}
std::vector<MapBuffer> MapBuffer::getMapBufferList(MapBuffer::Key key) const {
std::vector<MapBuffer> mapBufferList;
int32_t dynamicDataOffset = getDynamicDataOffset();
int32_t offset = getInt(key);
int32_t mapBufferListLength = *reinterpret_cast<int32_t const *>(
bytes_.data() + dynamicDataOffset + offset);
offset = offset + sizeof(uint32_t);
int32_t curLen = 0;
while (curLen < mapBufferListLength) {
int32_t mapBufferLength = *reinterpret_cast<int32_t const *>(
bytes_.data() + dynamicDataOffset + offset + curLen);
curLen = curLen + sizeof(uint32_t);
std::vector<uint8_t> value(mapBufferLength);
memcpy(
value.data(),
bytes_.data() + dynamicDataOffset + offset + curLen,
mapBufferLength);
mapBufferList.emplace_back(std::move(value));
curLen = curLen + mapBufferLength;
}
return mapBufferList;
}
size_t MapBuffer::size() const {
return bytes_.size();
}