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ce3951bbb3
Co-authored-by: Bart <11445373+bthomee@users.noreply.github.com> Co-authored-by: Bart <bthomee@users.noreply.github.com>
77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
#include <xrpl/nodestore/detail/DecodedBlob.h>
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#include <xrpl/basics/Blob.h>
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#include <xrpl/basics/base_uint.h>
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#include <xrpl/basics/safe_cast.h>
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#include <xrpl/beast/utility/instrumentation.h>
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#include <xrpl/nodestore/NodeObject.h>
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#include <algorithm>
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#include <memory>
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#include <utility>
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namespace xrpl::NodeStore {
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DecodedBlob::DecodedBlob(void const* key, void const* value, int valueBytes)
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{
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/* Data format:
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Bytes
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0...7 Unused
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8 char One of NodeObjectType
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9...end The body of the object data
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*/
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m_success = false;
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m_key = key;
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m_objectType = hotUNKNOWN;
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m_objectData = nullptr;
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m_dataBytes = std::max(0, valueBytes - 9);
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// VFALCO NOTE What about bytes 4 through 7 inclusive?
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if (valueBytes > 8)
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{
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unsigned char const* byte = static_cast<unsigned char const*>(value);
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m_objectType = safe_cast<NodeObjectType>(byte[8]);
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}
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if (valueBytes > 9)
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{
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m_objectData = static_cast<unsigned char const*>(value) + 9;
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switch (m_objectType)
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{
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default:
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break;
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case hotUNKNOWN:
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case hotLEDGER:
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case hotACCOUNT_NODE:
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case hotTRANSACTION_NODE:
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m_success = true;
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break;
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}
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}
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}
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std::shared_ptr<NodeObject>
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DecodedBlob::createObject()
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{
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XRPL_ASSERT(m_success, "xrpl::NodeStore::DecodedBlob::createObject : valid object type");
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std::shared_ptr<NodeObject> object;
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if (m_success)
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{
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Blob data(m_objectData, m_objectData + m_dataBytes);
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object = NodeObject::createObject(m_objectType, std::move(data), uint256::fromVoid(m_key));
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}
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return object;
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}
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} // namespace xrpl::NodeStore
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