Started creating scripting library/namespace and added sol2 for interfacing

1 files changed, 54 insertions, 0 deletions

diff --git a/lib/sol2/examples/source/customization_convert_on_get.cpp b/lib/sol2/examples/source/customization_convert_on_get.cpp
new file mode 100644
index 0000000..da2b5da
--- /dev/null
+++ b/lib/sol2/examples/source/customization_convert_on_get.cpp
@@ -0,0 +1,54 @@
+#define SOL_ALL_SAFETIES_ON 1
+#include <sol/sol.hpp>
+
+#include <iostream>
+#include <iomanip>
+#include "assert.hpp"
+
+struct number_shim {
+	double num = 0;
+};
+
+template <typename Handler>
+bool sol_lua_check(sol::types<number_shim>, lua_State* L, int index, Handler&& handler, sol::stack::record& tracking) {
+	// check_usertype is a backdoor for directly checking sol3 usertypes
+	if (!sol::stack::check_usertype<number_shim>(L, index) 
+		&& !sol::stack::check<double>(L, index)) {
+		handler(L, index, sol::type_of(L, index), sol::type::userdata, "expected a number_shim or a number");
+		return false;
+	}
+	tracking.use(1);
+	return true;
+}
+
+number_shim sol_lua_get(sol::types<number_shim>, lua_State* L, int index, sol::stack::record& tracking) {
+	if (sol::stack::check_usertype<number_shim>(L, index)) {
+		number_shim& ns = sol::stack::get_usertype<number_shim>(L, index, tracking);
+		return ns;
+	}
+	number_shim ns{};
+	ns.num = sol::stack::get<double>(L, index, tracking);
+	return ns;
+}
+
+int main() {
+	sol::state lua;
+
+	// Create a pass-through style of function
+	lua.safe_script("function f ( a ) return a end");
+	lua.set_function("g", [](double a) {
+		number_shim ns;
+		ns.num = a;
+		return ns;
+	});
+
+	lua.script("vf = f(25) vg = g(35)");
+	
+	number_shim thingsf = lua["vf"];
+	number_shim thingsg = lua["vg"];
+
+	c_assert(thingsf.num == 25);
+	c_assert(thingsg.num == 35);
+
+	return 0;
+}