From c467671ae8b6ec161c17e86f3383fd0625f755b8 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Fri, 19 Aug 2022 19:48:10 -0400
Subject: remove sol2 (will re-add as submodule)

---
 lib/sol2/examples/source/singleton.cpp | 69 ----------------------------------
 1 file changed, 69 deletions(-)
 delete mode 100644 lib/sol2/examples/source/singleton.cpp

(limited to 'lib/sol2/examples/source/singleton.cpp')

diff --git a/lib/sol2/examples/source/singleton.cpp b/lib/sol2/examples/source/singleton.cpp
deleted file mode 100644
index 81ea2a3..0000000
--- a/lib/sol2/examples/source/singleton.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-#define SOL_ALL_SAFETIES_ON 1
-#include <sol/sol.hpp>
-
-#include <iostream>
-
-#include <memory>
-#include <mutex>
-
-struct SomeLib {
-private:
-	SomeLib() {}
-public:
-	static std::shared_ptr<SomeLib> getInstance();
-
-	int doSomething() const {
-		return 20;
-	}
-
-	// destructor must be public to work with 
-	// std::shared_ptr and friends
-	// if you need it to be private, you must implement
-	// a custom deleter with access to the private members
-	// (e.g., a deleter struct defined in this class)
-	~SomeLib() {}
-};
-
-std::shared_ptr<SomeLib> SomeLib::getInstance() {
-	static std::weak_ptr<SomeLib> instance;
-	static std::mutex m;
-
-	m.lock();
-	auto ret = instance.lock();
-	if (!ret) {
-		ret.reset(new SomeLib());
-		instance = ret;
-	}
-	m.unlock();
-
-	return ret;
-}
-
-int main(int, char*[]) {
-	std::cout << "=== singleton ===" << std::endl;
-
-	sol::state lua;
-	lua.open_libraries(sol::lib::base);
-
-	lua.new_usertype<SomeLib>("SomeLib",
-		"new", sol::no_constructor,
-		"getInstance", &SomeLib::getInstance,
-		"doSomething", &SomeLib::doSomething
-		);
-
-	lua.script(R"(
-
--- note we use the `.` here, not `:` (there's no self to access)
-local sli = SomeLib.getInstance()
-
--- we use the `:` here because there is something to access
-local value = sli:doSomething()
-
--- check
-print('sli:doSomething() returned:', value)
-assert(value == 20)
-)");
-
-	std::cout << std::endl;
-	return 0;
-}
-- 
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