mirror of
https://github.com/ton-blockchain/ton
synced 2025-03-09 15:40:10 +00:00
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#pragma once
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#include "vm/cells/Cell.h"
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#include "vm/cells/CellUsageTree.h"
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namespace vm {
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class UsageCell : public Cell {
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private:
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struct PrivateTag {};
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public:
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UsageCell(Ref<Cell> cell, CellUsageTree::NodePtr tree_node, PrivateTag)
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: cell_(std::move(cell)), tree_node_(std::move(tree_node)) {
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}
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static Ref<Cell> create(Ref<Cell> cell, CellUsageTree::NodePtr tree_node) {
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if (tree_node.empty()) {
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return cell;
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}
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return Ref<UsageCell>{true, std::move(cell), std::move(tree_node), PrivateTag{}};
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}
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// load interface
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td::Result<LoadedCell> load_cell() const override {
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TRY_RESULT(loaded_cell, cell_->load_cell());
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if (tree_node_.on_load()) {
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CHECK(loaded_cell.tree_node.empty());
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loaded_cell.tree_node = tree_node_;
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}
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return std::move(loaded_cell);
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}
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Ref<Cell> virtualize(VirtualizationParameters virt) const override {
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auto virtualized_cell = cell_->virtualize(virt);
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if (tree_node_.empty()) {
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return virtualized_cell;
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}
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if (virtualized_cell.get() == cell_.get()) {
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return Ref<Cell>(this);
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}
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return create(std::move(virtualized_cell), tree_node_);
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}
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td::uint32 get_virtualization() const override {
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return cell_->get_virtualization();
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}
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CellUsageTree::NodePtr get_tree_node() const override {
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return tree_node_;
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}
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bool is_loaded() const override {
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return cell_->is_loaded();
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}
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// hash and level
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LevelMask get_level_mask() const override {
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return cell_->get_level_mask();
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}
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protected:
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const Hash do_get_hash(td::uint32 level) const override {
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return cell_->get_hash(level);
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}
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td::uint16 do_get_depth(td::uint32 level) const override {
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return cell_->get_depth(level);
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}
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private:
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Ref<Cell> cell_;
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CellUsageTree::NodePtr tree_node_;
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};
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} // namespace vm
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