Support wallet-v4 in tonlib (#785)

crypto/smc-envelope/WalletV4.h

@@ -0,0 +1,46 @@
+/*
+    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/>.
+*/
+#pragma once
+
+#include "smc-envelope/SmartContract.h"
+#include "smc-envelope/WalletInterface.h"
+#include "vm/cells.h"
+#include "Ed25519.h"
+#include "block/block.h"
+#include "vm/cells/CellString.h"
+
+namespace ton {
+
+struct WalletV4Traits {
+  using InitData = WalletInterface::DefaultInitData;
+
+  static constexpr unsigned max_message_size = vm::CellString::max_bytes;
+  static constexpr unsigned max_gifts_size = 4;
+  static constexpr auto code_type = SmartContractCode::WalletV4;
+};
+
+class WalletV4 : public WalletBase<WalletV4, WalletV4Traits> {
+ public:
+  explicit WalletV4(State state) : WalletBase(std::move(state)) {
+  }
+  td::Result<td::Ref<vm::Cell>> make_a_gift_message(const td::Ed25519::PrivateKey& private_key, td::uint32 valid_until,
+                                                    td::Span<Gift> gifts) const override;
+  static td::Ref<vm::Cell> get_init_data(const InitData& init_data) noexcept;
+
+  td::Result<td::uint32> get_wallet_id() const override;
+};
+}  // namespace ton