sol2/examples/source/metatable_key_low_level.cpp
2022-11-09 18:33:16 -05:00

35 lines
732 B
C++

#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>
int main(int, char*[]) {
struct bark {
int operator()(int x) {
return x;
}
};
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.new_usertype<bark>("bark",
sol::meta_function::call_function,
&bark::operator());
bark b;
lua.set("b", &b);
sol::table b_as_table = lua["b"];
sol::table b_metatable = b_as_table[sol::metatable_key];
sol::function b_call = b_metatable["__call"];
sol::function b_as_function = lua["b"];
int result1 = b_as_function(1);
// pass 'self' directly to argument
int result2 = b_call(b, 1);
SOL_ASSERT(result1 == result2);
SOL_ASSERT(result1 == 1);
SOL_ASSERT(result2 == 1);
}