mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Andrei Shikov
5b489d5f95
Summary: Replaces dynamic manually managed array with a vector of bytes, removing the need for managing memory manually. This approach is a little bit slower than before, as vector is allocating memory more conservatively. This can be improved in the future by providing an estimate for the data size. Changelog: [Internal] Reviewed By: javache Differential Revision: D33611759 fbshipit-source-id: a0e5e57c4e413206a9f891cd5630ecc9088a9bf7
61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <react/debug/react_native_assert.h>
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#include <react/renderer/mapbuffer/MapBuffer.h>
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#include <react/renderer/mapbuffer/primitives.h>
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#include <cstdlib>
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namespace facebook {
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namespace react {
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// Default reserved size for buckets_ vector
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constexpr uint16_t INITIAL_BUCKETS_SIZE = 10;
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/**
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* MapBufferBuilder is a builder class for MapBuffer
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*/
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class MapBufferBuilder {
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private:
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Header _header = {ALIGNMENT, 0, 0};
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void storeKeyValue(Key key, uint8_t const *value, uint32_t valueSize);
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std::vector<Bucket> buckets_{};
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std::vector<Byte> dynamicData_{};
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// Minimmum key to store in the MapBuffer (this is used to guarantee
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// consistency)
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uint16_t minKeyToStore_ = 0;
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public:
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MapBufferBuilder(uint32_t initialSize = INITIAL_BUCKETS_SIZE);
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static MapBuffer EMPTY();
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void putInt(Key key, int32_t value);
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void putBool(Key key, bool value);
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void putDouble(Key key, double value);
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void putNull(Key key);
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void putString(Key key, std::string const &value);
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void putMapBuffer(Key key, MapBuffer const &map);
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// TODO T83483191: This should return MapBuffer!
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MapBuffer build();
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};
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} // namespace react
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} // namespace facebook
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