From eef62c82a2e58700fc1216b0b8c03e421bc77995 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lo=C3=AFc=20Blot?= Date: Sat, 30 Jun 2018 17:11:38 +0200 Subject: Modernize lua read (part 2 & 3): C++ templating assurance (#7410) * Modernize lua read (part 2 & 3): C++ templating assurance Implement the boolean reader Implement the string reader Also remove unused & unimplemented script_error_handler Add a reader with default value --- src/script/common/helper.h | 54 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 src/script/common/helper.h (limited to 'src/script/common/helper.h') diff --git a/src/script/common/helper.h b/src/script/common/helper.h new file mode 100644 index 000000000..d639d6e16 --- /dev/null +++ b/src/script/common/helper.h @@ -0,0 +1,54 @@ +/* +Minetest +Copyright (C) 2018 nerzhul, Loic Blot + +This program 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 2.1 of the License, or +(at your option) any later version. + +This program 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 this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#pragma once + +extern "C" { +#include +#include +} + +class LuaHelper +{ +protected: + static bool isNaN(lua_State *L, int idx); + + /** + * Read a value using a template type T from Lua State L and index + * + * + * @tparam T type to read from Lua + * @param L Lua state + * @param index Lua Index to read + * @return read value from Lua + */ + template static T readParam(lua_State *L, int index); + + /** + * Read a value using a template type T from Lua State L and index + * + * @tparam T type to read from Lua + * @param L Lua state + * @param index Lua Index to read + * @param default_value default value to apply if nil + * @return read value from Lua or default value if nil + */ + template + static T readParam(lua_State *L, int index, const T &default_value); +}; -- cgit v1.2.3