51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
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#define SOL_ALL_SAFETIES_ON 1
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#include <sol/sol.hpp>
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#include <iostream>
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struct object {
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void my_func() {
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std::cout << "hello\n";
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}
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};
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int deny(lua_State* L) {
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return luaL_error(L, "HAH! Deniiiiied!");
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}
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int main(int, char*[]) {
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sol::state lua;
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lua.open_libraries(sol::lib::base);
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object my_obj;
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sol::table obj_table = lua.create_named_table("object");
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sol::table obj_metatable = lua.create_table_with();
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obj_metatable.set_function(
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"my_func", &object::my_func, &my_obj);
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// Set whatever else you need to
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// on the obj_metatable,
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// not on the obj_table itself!
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// Properly self-index metatable to block things
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obj_metatable[sol::meta_function::new_index] = deny;
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obj_metatable[sol::meta_function::index] = obj_metatable;
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// Set it on the actual table
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obj_table[sol::metatable_key] = obj_metatable;
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try {
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lua.script(R"(
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print(object.my_func)
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object["my_func"] = 24
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print(object.my_func)
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)");
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}
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catch (const std::exception& e) {
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std::cout << "an expected error occurred: " << e.what()
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<< std::endl;
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}
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return 0;
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}
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