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72 lines
2.1 KiB
C++
72 lines
2.1 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 2017-2019 Telegram Systems LLP
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*/
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#include "vm/dispatch.h"
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#include "vm/excno.hpp"
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#include <cassert>
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#include <map>
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#include <mutex>
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namespace vm {
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namespace {
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std::mutex dispatch_tables_mutex;
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std::map<int, const DispatchTable*> dispatch_tables;
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} // namespace
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DummyDispatchTable dummy_dispatch_table;
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bool DispatchTable::register_table(Codepage _cp, const DispatchTable& dt) {
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assert(dt.is_final());
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int cp = (int)_cp;
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if (cp < -0x8000 || cp >= 0x8000 || cp == -1) {
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return false;
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} else {
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std::lock_guard<std::mutex> guard(dispatch_tables_mutex);
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return dispatch_tables.emplace(cp, &dt).second;
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}
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}
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bool DispatchTable::register_table(Codepage cp) const {
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return register_table(cp, *this);
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}
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const DispatchTable* DispatchTable::get_table(Codepage cp) {
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return get_table((int)cp);
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}
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const DispatchTable* DispatchTable::get_table(int cp) {
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std::lock_guard<std::mutex> guard(dispatch_tables_mutex);
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auto entry = dispatch_tables.find(cp);
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return entry != dispatch_tables.end() ? entry->second : 0;
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}
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int DummyDispatchTable::dispatch(VmState* st, CellSlice& cs) const {
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throw VmError{Excno::inv_opcode, "empty opcode table"};
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}
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std::string DummyDispatchTable::dump_instr(CellSlice& cs) const {
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return "";
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}
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int DummyDispatchTable::instr_len(const CellSlice& cs) const {
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return 0;
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}
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} // namespace vm
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