void set_error_from_top_of_stack(lua_State*l)
{
int error_index = lua_gettop(l);
push_error_id_str(l);
lua_pushvalue(l,error_index);
lua_settable(l, LUA_REGISTRYINDEX);
}
void set_error_from_top_of_stack_and_pop_the_error(lua_State* vm)
{
int error_index = lua_gettop(vm);
push_error_id_str(vm);
lua_pushvalue(vm, error_index);
lua_settable(vm, LUA_REGISTRYINDEX);
lua_pop(vm, 1);
}
std::string get_last_error(lua_State*l)
{
push_error_id_str(l);
lua_gettable(l, LUA_REGISTRYINDEX);
std::string error;
if( (! lua_isnil(l,-1 ) ) && (lua_type(l, -1) == LUA_TSTRING ))
error = lua_tolstring(l,-1,0);
lua_pop( l, 1);
return error;
}
std::string get_last_error(lua_State* vm)
{
push_error_id_str(vm);
lua_gettable(vm, LUA_REGISTRYINDEX);
std::string error;
if ( lua_type(vm, -1) == LUA_TSTRING )
{
size_t len(0);
char const* str = lua_tolstring(vm, -1, &len);
error = std::string(str, len);
}
lua_pop(vm, 1);
return error;
}
void reset_error_value(lua_State*l)
{
push_error_id_str(l);
lua_pushnil(l);
lua_settable(l, LUA_REGISTRYINDEX);
}
void reset_error_value(lua_State* vm)
{
push_error_id_str(vm);
lua_pushnil(vm);
lua_settable(vm, LUA_REGISTRYINDEX);
}