transfer_tag.hpp

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#pragma once
 
/// @file userver/formats/common/transfer_tag.hpp
/// @brief @copybrief formats::common::TransferTag
 
USERVER_NAMESPACE_BEGIN
 
namespace formats::common {
 
/// @brief This tag class is used to move a `ValueBuilder` object without
/// copying
///
/// Unlike the move-constructor, if the object points to a subtree, only the
/// pointer is copied. Note that storing the resulting `ValueBuilder` in a
/// container for a long period of time will cause a "memory leak": the child
/// `ValueBuilder` will hold the entire original tree, starting from the root.
class TransferTag final {};
 
}  // namespace formats::common
 
USERVER_NAMESPACE_END