Method PushContainerMethod

library/LuaWrapper.cpp:1263–1279

* Add a 6 upvalue metamethod to the metatable. */

 * Add a 6 upvalue metamethod to the metatable.
 */
void LuaWrapper::PushContainerMethod(lua_State *state, int meta_idx, int ftable_idx,
                                     lua_CFunction function,
    const type_identity *container, const type_identity *item, int count)
{
    lua_rawgetp(state, LUA_REGISTRYINDEX, &DFHACK_TYPETABLE_TOKEN);
    lua_pushvalue(state, meta_idx);
    lua_pushvalue(state, ftable_idx);

    lua_pushlightuserdata(state, const_cast<type_identity*>(container));
    lua_pushlightuserdata(state, const_cast<type_identity*>(item));
    if (count < 0)
        lua_pushnil(state);
    else
        lua_pushinteger(state, count);

    lua_pushcclosure(state, function, 6);
}

/**
 * Add a 6 upvalue metamethod to the metatable.