Forget what I said, I just need to change git attributes to mark for vendor

1 files changed, 70 insertions, 0 deletions

diff --git a/lib/sol2/examples/source/customization_multiple.cpp b/lib/sol2/examples/source/customization_multiple.cpp
new file mode 100644
index 0000000..2d5ae0f
--- /dev/null
+++ b/lib/sol2/examples/source/customization_multiple.cpp
@@ -0,0 +1,70 @@
+#define SOL_ALL_SAFETIES_ON 1
+#include <sol/sol.hpp>
+
+#include <iostream>
+#include "assert.hpp"
+
+struct two_things {
+	int a;
+	bool b;
+};
+
+template <typename Handler>
+bool sol_lua_check(sol::types<two_things>, lua_State* L, int index, Handler&& handler, sol::stack::record& tracking) {
+	// indices can be negative to count backwards from the top of the stack,
+	// rather than the bottom up
+	// to deal with this, we adjust the index to
+	// its absolute position using the lua_absindex function 
+	int absolute_index = lua_absindex(L, index);
+	// Check first and second second index for being the proper types
+	bool success = sol::stack::check<int>(L, absolute_index, handler) && sol::stack::check<bool>(L, absolute_index + 1, handler);
+	tracking.use(2);
+	return success;
+}
+
+two_things sol_lua_get(sol::types<two_things>, lua_State* L, int index, sol::stack::record& tracking) {
+	int absolute_index = lua_absindex(L, index);
+	// Get the first element
+	int a = sol::stack::get<int>(L, absolute_index);
+	// Get the second element, 
+	// in the +1 position from the first
+	bool b = sol::stack::get<bool>(L, absolute_index + 1);
+	// we use 2 slots, each of the previous takes 1
+	tracking.use(2);
+	return two_things{ a, b };
+}
+
+int sol_lua_push(sol::types<two_things>, lua_State* L, const two_things& things) {
+	int amount = sol::stack::push(L, things.a);
+	// amount will be 1: int pushes 1 item
+	amount += sol::stack::push(L, things.b);
+	// amount 2 now, since bool pushes a single item
+	// Return 2 things
+	return amount;
+}
+
+int main() {
+	std::cout << "=== customization ===" << std::endl;
+	std::cout << std::boolalpha;
+	
+	sol::state lua;
+	lua.open_libraries(sol::lib::base);
+
+	// Create a pass-through style of function
+	lua.script("function f ( a, b ) print(a, b) return a, b end");
+
+	// get the function out of Lua
+	sol::function f = lua["f"];
+
+	two_things things = f(two_things{ 24, false });
+	c_assert(things.a == 24);
+	c_assert(things.b == false);
+	// things.a == 24
+	// things.b == true
+
+	std::cout << "things.a: " << things.a << std::endl;
+	std::cout << "things.b: " << things.b << std::endl;
+	std::cout << std::endl;
+
+	return 0;
+}