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scylladb/cql3/values.cc

73 lines
2.4 KiB
C++

/*
* Copyright (C) 2020-present ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#include "cql3/values.hh"
namespace cql3 {
std::ostream& operator<<(std::ostream& os, const raw_value_view& value) {
seastar::visit(value._data, [&] (FragmentedView auto v) {
os << "{ value: ";
for (bytes_view frag : fragment_range(v)) {
os << frag;
}
os << " }";
}, [&] (null_value) {
os << "{ null }";
}, [&] (unset_value) {
os << "{ unset }";
});
return os;
}
raw_value_view raw_value::to_view() const {
switch (_data.index()) {
case 0: return raw_value_view::make_value(managed_bytes_view(bytes_view(std::get<bytes>(_data))));
case 1: return raw_value_view::make_value(managed_bytes_view(std::get<managed_bytes>(_data)));
case 2: return raw_value_view::make_null();
default: return raw_value_view::make_unset_value();
}
}
raw_value raw_value::make_value(const raw_value_view& view) {
switch (view._data.index()) {
case 0: return raw_value::make_value(managed_bytes(std::get<fragmented_temporary_buffer::view>(view._data)));
case 1: return raw_value::make_value(managed_bytes(std::get<managed_bytes_view>(view._data)));
case 2: return raw_value::make_null();
default: return raw_value::make_unset_value();
}
}
raw_value_view raw_value_view::make_temporary(raw_value&& value) {
switch (value._data.index()) {
case 0: return raw_value_view(managed_bytes(std::get<bytes>(value._data)));
case 1: return raw_value_view(std::move(std::get<managed_bytes>(value._data)));
default: return raw_value_view::make_null();
}
}
raw_value_view::raw_value_view(managed_bytes&& tmp) {
_temporary_storage = make_lw_shared<managed_bytes>(std::move(tmp));
_data = managed_bytes_view(*_temporary_storage);
}
}