forked from Mirrorlandia_minetest/minetest
128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/*
|
|
Minetest
|
|
Copyright (C) 2018 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
|
|
|
|
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.
|
|
*/
|
|
|
|
#include "helper.h"
|
|
#include <cmath>
|
|
#include <sstream>
|
|
#include <irr_v2d.h>
|
|
#include "c_types.h"
|
|
#include "c_internal.h"
|
|
|
|
// imported from c_converter.cpp with pure C++ style
|
|
static inline void check_lua_type(lua_State *L, int index, const char *name, int type)
|
|
{
|
|
int t = lua_type(L, index);
|
|
if (t != type) {
|
|
std::string traceback = script_get_backtrace(L);
|
|
throw LuaError(std::string("Invalid ") + (name) + " (expected " +
|
|
lua_typename(L, (type)) + " got " + lua_typename(L, t) +
|
|
").\n" + traceback);
|
|
}
|
|
}
|
|
|
|
// imported from c_converter.cpp
|
|
#define CHECK_POS_COORD(name) \
|
|
check_lua_type(L, -1, "position coordinate '" name "'", LUA_TNUMBER)
|
|
#define CHECK_POS_TAB(index) check_lua_type(L, index, "position", LUA_TTABLE)
|
|
|
|
bool LuaHelper::isNaN(lua_State *L, int idx)
|
|
{
|
|
return lua_type(L, idx) == LUA_TNUMBER && std::isnan(lua_tonumber(L, idx));
|
|
}
|
|
|
|
/*
|
|
* Read template functions
|
|
*/
|
|
template <> bool LuaHelper::readParam(lua_State *L, int index)
|
|
{
|
|
return lua_toboolean(L, index) != 0;
|
|
}
|
|
|
|
template <> bool LuaHelper::readParam(lua_State *L, int index, const bool &default_value)
|
|
{
|
|
if (lua_isnil(L, index))
|
|
return default_value;
|
|
|
|
return lua_toboolean(L, index) != 0;
|
|
}
|
|
|
|
template <> s16 LuaHelper::readParam(lua_State *L, int index)
|
|
{
|
|
return lua_tonumber(L, index);
|
|
}
|
|
|
|
template <> float LuaHelper::readParam(lua_State *L, int index)
|
|
{
|
|
if (isNaN(L, index))
|
|
throw LuaError("NaN value is not allowed.");
|
|
|
|
return (float)luaL_checknumber(L, index);
|
|
}
|
|
|
|
template <> v2s16 LuaHelper::readParam(lua_State *L, int index)
|
|
{
|
|
v2s16 p;
|
|
CHECK_POS_TAB(index);
|
|
lua_getfield(L, index, "x");
|
|
CHECK_POS_COORD("x");
|
|
p.X = readParam<s16>(L, -1);
|
|
lua_pop(L, 1);
|
|
lua_getfield(L, index, "y");
|
|
CHECK_POS_COORD("y");
|
|
p.Y = readParam<s16>(L, -1);
|
|
lua_pop(L, 1);
|
|
return p;
|
|
}
|
|
|
|
template <> v2f LuaHelper::readParam(lua_State *L, int index)
|
|
{
|
|
v2f p;
|
|
CHECK_POS_TAB(index);
|
|
lua_getfield(L, index, "x");
|
|
CHECK_POS_COORD("x");
|
|
p.X = readParam<float>(L, -1);
|
|
lua_pop(L, 1);
|
|
lua_getfield(L, index, "y");
|
|
CHECK_POS_COORD("y");
|
|
p.Y = readParam<float>(L, -1);
|
|
lua_pop(L, 1);
|
|
return p;
|
|
}
|
|
|
|
template <> std::string LuaHelper::readParam(lua_State *L, int index)
|
|
{
|
|
std::string result;
|
|
const char *str = luaL_checkstring(L, index);
|
|
result.append(str);
|
|
return result;
|
|
}
|
|
|
|
template <>
|
|
std::string LuaHelper::readParam(
|
|
lua_State *L, int index, const std::string &default_value)
|
|
{
|
|
std::string result;
|
|
const char *str = lua_tostring(L, index);
|
|
if (str)
|
|
result.append(str);
|
|
else
|
|
result = default_value;
|
|
return result;
|
|
}
|