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ton/crypto/vm/cells/MerkleUpdate.h
2019-09-07 14:33:36 +04:00

51 lines
2.1 KiB
C++

/*
This file is part of TON Blockchain Library.
TON Blockchain Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
TON Blockchain Library 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
Copyright 2017-2019 Telegram Systems LLP
*/
#pragma once
#include "vm/cells/Cell.h"
#include "vm/cells/CellSlice.h"
#include "vm/cells/CellBuilder.h"
#include "td/utils/Status.h"
#include <utility>
namespace vm {
class MerkleUpdate {
public:
// from + update == to
static Ref<Cell> generate(Ref<Cell> from, Ref<Cell> to, CellUsageTree *usage_tree);
// Returns empty Ref<Cell> if something go wrong. If validate(from).is_ok() and may_apply(from, to).is_ok(), then it
// must not fail.
static Ref<Cell> apply(Ref<Cell> from, Ref<Cell> update);
// check if update is valid
static TD_WARN_UNUSED_RESULT td::Status validate(Ref<Cell> update);
// check that hash in from is same as hash stored in update. Do not validate update
static TD_WARN_UNUSED_RESULT td::Status may_apply(Ref<Cell> from, Ref<Cell> update);
static Ref<Cell> apply_raw(Ref<Cell> from, Ref<Cell> update_from, Ref<Cell> update_to, td::uint32 from_level,
td::uint32 to_level);
static std::pair<Ref<Cell>, Ref<Cell>> generate_raw(Ref<Cell> from, Ref<Cell> to, CellUsageTree *usage_tree);
static td::Status validate_raw(Ref<Cell> update_from, Ref<Cell> update_to, td::uint32 from_level,
td::uint32 to_level);
static Ref<Cell> combine(Ref<Cell> ab, Ref<Cell> bc);
};
} // namespace vm