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initial commit 2019-09-07 14:03:22 +04:00 • committed by vvaltman
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crypto/vm/dispatch.h Normal file
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/*
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 <string>
namespace vm {
class VmState;
class CellSlice;
enum class Codepage { test_cp = 0 };
class DispatchTable {
public:
DispatchTable() = default;
virtual ~DispatchTable() = default;
virtual int dispatch(VmState* st, CellSlice& cs) const = 0;
virtual std::string dump_instr(CellSlice& cs) const = 0;
virtual int instr_len(const CellSlice& cs) const = 0;
virtual DispatchTable* finalize() = 0;
virtual bool is_final() const = 0;
static const DispatchTable* get_table(Codepage cp);
static const DispatchTable* get_table(int cp);
static bool register_table(Codepage cp, const DispatchTable& dt);
bool register_table(Codepage cp) const;
};
class DummyDispatchTable : public DispatchTable {
public:
DummyDispatchTable() : DispatchTable() {
}
~DummyDispatchTable() override = default;
int dispatch(VmState* st, CellSlice& cs) const override;
std::string dump_instr(CellSlice& cs) const override;
int instr_len(const CellSlice& cs) const override;
DispatchTable* finalize() override {
return this;
}
bool is_final() const override {
return true;
}
};
extern DummyDispatchTable dummy_dispatch_table;
} // namespace vm