diff options
| author | Andy Belle-Isle <drumsetmonkey@gmail.com> | 2019-08-30 00:45:36 -0400 |
|---|---|---|
| committer | Andy Belle-Isle <drumsetmonkey@gmail.com> | 2019-08-30 00:45:36 -0400 |
| commit | dc2493e7525bb7633f697ef10f72b72b46222249 (patch) | |
| tree | 9816755219e65d3f47fdce81c78f3736a7ddb8ab /lib/sol2/examples/source/read_only.cpp | |
| parent | 9d2b31797d0cfd130802b69261df2cd402e39b49 (diff) | |
Forget what I said, I just need to change git attributes to mark for vendor
Diffstat (limited to 'lib/sol2/examples/source/read_only.cpp')
| -rw-r--r-- | lib/sol2/examples/source/read_only.cpp | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/sol2/examples/source/read_only.cpp b/lib/sol2/examples/source/read_only.cpp new file mode 100644 index 0000000..27af9b2 --- /dev/null +++ b/lib/sol2/examples/source/read_only.cpp @@ -0,0 +1,49 @@ +#define SOL_ALL_SAFETIES_ON 1
+#include <sol/sol.hpp>
+
+#include <iostream>
+
+struct object {
+ void my_func() {
+ std::cout << "hello\n";
+ }
+};
+
+int deny(lua_State* L) {
+ return luaL_error(L, "HAH! Deniiiiied!");
+}
+
+int main(int, char*[]) {
+
+ sol::state lua;
+ lua.open_libraries(sol::lib::base);
+
+ object my_obj;
+
+ sol::table obj_table = lua.create_named_table("object");
+
+ sol::table obj_metatable = lua.create_table_with();
+ obj_metatable.set_function("my_func", &object::my_func, &my_obj);
+ // Set whatever else you need to
+ // on the obj_metatable,
+ // not on the obj_table itself!
+
+ // Properly self-index metatable to block things
+ obj_metatable[sol::meta_function::new_index] = deny;
+ obj_metatable[sol::meta_function::index] = obj_metatable;
+
+ // Set it on the actual table
+ obj_table[sol::metatable_key] = obj_metatable;
+
+ try {
+ lua.script(R"(
+print(object.my_func)
+object["my_func"] = 24
+print(object.my_func)
+ )");
+ }
+ catch (const std::exception& e) {
+ std::cout << "an expected error occurred: " << e.what() << std::endl;
+ }
+ return 0;
+}
\ No newline at end of file |