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The binding coroutines in libretro builds are constructed on the VM stack, so reallocating the VM memory would corrupt the memory of any currently existing coroutines. I've changed it so that the coroutines are no longer constructed on the VM stack so that they're unaffected by VM memory reallocations, and added a "slot" mechanism for storing variables on the VM stack. (Any Ruby `VALUE`s used by a coroutine have to be stored on the VM stack so that the Ruby garbage collector doesn't free them while they're being used, which is why the slot mechanism is necessary.)
205 lines
8.2 KiB
C++
205 lines
8.2 KiB
C++
/*
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** table-binding.cpp
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU 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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**
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** mkxp 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 General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "table-binding.h"
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#include "serializable-binding.h"
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#include "table.h"
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using namespace mkxp_sandbox;
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VALUE mkxp_sandbox::table_class;
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static struct bindings::rb_data_type table_type;
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SANDBOX_DEF_ALLOC_WITH_INIT(table_type, new Table(0, 0, 0))
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static VALUE initialize(int32_t argc, wasm_ptr_t argv, VALUE self) {
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struct coro : boost::asio::coroutine {
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typedef decl_slots<int32_t, int32_t, int32_t> slots;
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VALUE operator()(int32_t argc, wasm_ptr_t argv, VALUE self) {
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BOOST_ASIO_CORO_REENTER (this) {
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SANDBOX_SLOT(1) = SANDBOX_SLOT(2) = 1;
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// TODO: throw error if too many or too few arguments
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SANDBOX_AWAIT_S(0, rb_num2int, ((VALUE *)(**sb() + argv))[0]);
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SANDBOX_SLOT(0) = std::max(SANDBOX_SLOT(0), (int32_t)0);
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if (argc >= 2) {
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SANDBOX_AWAIT_S(1, rb_num2int, ((VALUE *)(**sb() + argv))[1]);
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SANDBOX_SLOT(1) = std::max(SANDBOX_SLOT(1), (int32_t)0);
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if (argc >= 3) {
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SANDBOX_AWAIT_S(2, rb_num2int, ((VALUE *)(**sb() + argv))[2]);
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SANDBOX_SLOT(2) = std::max(SANDBOX_SLOT(2), (int32_t)0);
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}
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}
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Table *table = get_private_data<Table>(self);
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if (table != nullptr) {
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table->resize(SANDBOX_SLOT(0), SANDBOX_SLOT(1), SANDBOX_SLOT(2));
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} else {
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table = new Table(SANDBOX_SLOT(0), SANDBOX_SLOT(1), SANDBOX_SLOT(2));
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set_private_data(self, table);
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}
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}
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return SANDBOX_NIL;
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}
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};
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return sb()->bind<struct coro>()()(argc, argv, self);
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}
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static VALUE initialize_copy(VALUE self, VALUE value) {
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struct coro : boost::asio::coroutine {
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VALUE operator()(VALUE self, VALUE value) {
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BOOST_ASIO_CORO_REENTER (this) {
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if (self != value) {
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SANDBOX_AWAIT(rb_obj_init_copy, self, value);
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set_private_data(self, new Table(*get_private_data<Table>(value)));
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}
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}
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return self;
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}
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};
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return sb()->bind<struct coro>()()(self, value);
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}
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static VALUE resize(int32_t argc, wasm_ptr_t argv, VALUE self) {
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struct coro : boost::asio::coroutine {
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typedef decl_slots<int32_t, int32_t, int32_t> slots;
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VALUE operator()(int32_t argc, wasm_ptr_t argv, VALUE self) {
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BOOST_ASIO_CORO_REENTER (this) {
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SANDBOX_SLOT(1) = SANDBOX_SLOT(2) = 1;
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// TODO: throw error if too many or too few arguments
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SANDBOX_AWAIT_S(0, rb_num2int, ((VALUE *)(**sb() + argv))[0]);
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SANDBOX_SLOT(0) = std::max(SANDBOX_SLOT(0), (int32_t)0);
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if (argc >= 2) {
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SANDBOX_AWAIT_S(1, rb_num2int, ((VALUE *)(**sb() + argv))[1]);
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SANDBOX_SLOT(1) = std::max(SANDBOX_SLOT(1), (int32_t)0);
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if (argc >= 3) {
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SANDBOX_AWAIT_S(2, rb_num2int, ((VALUE *)(**sb() + argv))[2]);
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SANDBOX_SLOT(2) = std::max(SANDBOX_SLOT(2), (int32_t)0);
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}
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}
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get_private_data<Table>(self)->resize(SANDBOX_SLOT(0), SANDBOX_SLOT(1), SANDBOX_SLOT(2));
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}
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return SANDBOX_NIL;
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}
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};
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return sb()->bind<struct coro>()()(argc, argv, self);
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}
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static VALUE xsize(VALUE self) {
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return sb()->bind<struct rb_ll2inum>()()(get_private_data<Table>(self)->xSize());
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}
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static VALUE ysize(VALUE self) {
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return sb()->bind<struct rb_ll2inum>()()(get_private_data<Table>(self)->ySize());
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}
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static VALUE zsize(VALUE self) {
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return sb()->bind<struct rb_ll2inum>()()(get_private_data<Table>(self)->zSize());
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}
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static VALUE get(int32_t argc, wasm_ptr_t argv, VALUE self) {
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struct coro : boost::asio::coroutine {
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typedef decl_slots<VALUE, int32_t, int32_t, int32_t> slots;
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VALUE operator()(int32_t argc, wasm_ptr_t argv, VALUE self) {
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BOOST_ASIO_CORO_REENTER (this) {
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SANDBOX_SLOT(2) = SANDBOX_SLOT(3) = 0;
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SANDBOX_AWAIT_S(1, rb_num2int, ((VALUE *)(**sb() + argv))[0]);
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if (argc >= 2) {
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SANDBOX_AWAIT_S(2, rb_num2int, ((VALUE *)(**sb() + argv))[1]);
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if (argc >= 3) {
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SANDBOX_AWAIT_S(3, rb_num2int, ((VALUE *)(**sb() + argv))[2]);
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// TODO: throw error if too many arguments
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}
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}
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if (SANDBOX_SLOT(1) < 0 || SANDBOX_SLOT(1) >= get_private_data<Table>(self)->xSize() || SANDBOX_SLOT(2) < 0 || SANDBOX_SLOT(2) >= get_private_data<Table>(self)->ySize() || SANDBOX_SLOT(3) < 0 || SANDBOX_SLOT(3) >= get_private_data<Table>(self)->zSize()) {
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SANDBOX_SLOT(0) = SANDBOX_NIL;
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} else {
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SANDBOX_AWAIT_S(0, rb_ll2inum, get_private_data<Table>(self)->get(SANDBOX_SLOT(1), SANDBOX_SLOT(2), SANDBOX_SLOT(3)));
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}
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}
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return SANDBOX_SLOT(0);
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}
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};
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return sb()->bind<struct coro>()()(argc, argv, self);
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}
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static VALUE set(int32_t argc, wasm_ptr_t argv, VALUE self) {
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struct coro : boost::asio::coroutine {
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typedef decl_slots<int32_t, int32_t, int32_t, int16_t> slots;
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VALUE operator()(int32_t argc, wasm_ptr_t argv, VALUE self) {
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BOOST_ASIO_CORO_REENTER (this) {
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SANDBOX_SLOT(1) = SANDBOX_SLOT(2) = 0;
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// TODO: throw error if too few arguments
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SANDBOX_AWAIT_S(0, rb_num2int, ((VALUE *)(**sb() + argv))[0]);
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if (argc >= 3) {
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SANDBOX_AWAIT_S(1, rb_num2int, ((VALUE *)(**sb() + argv))[1]);
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if (argc >= 4) {
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SANDBOX_AWAIT_S(2, rb_num2int, ((VALUE *)(**sb() + argv))[2]);
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}
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}
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SANDBOX_AWAIT_S(3, rb_num2int, ((VALUE *)(**sb() + argv))[std::min(argc, (int32_t)4) - 1]);
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get_private_data<Table>(self)->set(SANDBOX_SLOT(3), SANDBOX_SLOT(0), SANDBOX_SLOT(1), SANDBOX_SLOT(2));
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return ((VALUE *)(**sb() + argv))[std::min(argc, (int32_t)4) - 1];
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}
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return SANDBOX_UNDEF;
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}
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};
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return sb()->bind<struct coro>()()(argc, argv, self);
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}
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void table_binding_init::operator()() {
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BOOST_ASIO_CORO_REENTER (this) {
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table_type = sb()->rb_data_type("Table", nullptr, dfree<Table>, nullptr, nullptr, 0, 0, 0);
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SANDBOX_AWAIT_R(table_class, rb_define_class, "Table", sb()->rb_cObject());
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SANDBOX_AWAIT(rb_define_alloc_func, table_class, alloc);
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SANDBOX_AWAIT(rb_define_method, table_class, "initialize", (VALUE (*)(ANYARGS))initialize, -1);
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SANDBOX_AWAIT(rb_define_method, table_class, "initialize_copy", (VALUE (*)(ANYARGS))initialize_copy, 1);
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SANDBOX_AWAIT(serializable_binding_init<Table>, table_class);
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SANDBOX_AWAIT(rb_define_method, table_class, "resize", (VALUE (*)(ANYARGS))resize, -1);
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SANDBOX_AWAIT(rb_define_method, table_class, "xsize", (VALUE (*)(ANYARGS))xsize, 0);
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SANDBOX_AWAIT(rb_define_method, table_class, "ysize", (VALUE (*)(ANYARGS))ysize, 0);
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SANDBOX_AWAIT(rb_define_method, table_class, "zsize", (VALUE (*)(ANYARGS))zsize, 0);
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SANDBOX_AWAIT(rb_define_method, table_class, "[]", (VALUE (*)(ANYARGS))get, -1);
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SANDBOX_AWAIT(rb_define_method, table_class, "[]=", (VALUE (*)(ANYARGS))set, -1);
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}
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}
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