From ab0b4923c4f49e7a28f6d17e994d3e013ca344bb Mon Sep 17 00:00:00 2001
From: Loek Le Blansch <loek@pipeframe.xyz>
Date: Thu, 14 Nov 2024 18:04:03 +0100
Subject: more WIP audio system + utilities

---
 src/crepe/util/OptionalRef.hpp | 67 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 src/crepe/util/OptionalRef.hpp

(limited to 'src/crepe/util/OptionalRef.hpp')

diff --git a/src/crepe/util/OptionalRef.hpp b/src/crepe/util/OptionalRef.hpp
new file mode 100644
index 0000000..e603a25
--- /dev/null
+++ b/src/crepe/util/OptionalRef.hpp
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <stdexcept>
+
+#include "OptionalRef.h"
+
+namespace crepe {
+
+template <typename T>
+OptionalRef<T>::OptionalRef(T & ref) {
+	this->set(ref);
+}
+
+template <typename T>
+OptionalRef<T>::OptionalRef(const OptionalRef<T> & other) {
+	this->ref = other.ref;
+}
+
+template <typename T>
+OptionalRef<T>::OptionalRef(OptionalRef<T> && other) {
+	this->ref = other.ref;
+	other.clear();
+}
+
+template <typename T>
+OptionalRef<T> & OptionalRef<T>::operator=(const OptionalRef<T> & other) {
+	this->ref = other.ref;
+	return *this;
+}
+
+template <typename T>
+OptionalRef<T> & OptionalRef<T>::operator=(OptionalRef<T> && other) {
+	this->ref = other.ref;
+	other.clear();
+	return *this;
+}
+
+template <typename T>
+T & OptionalRef<T>::get() const {
+	if (this->ref == nullptr)
+		throw std::runtime_error("OptionalRef: attempt to dereference nullptr");
+	return *this->ref;
+}
+
+template <typename T>
+void OptionalRef<T>::set(T & ref) noexcept {
+	this->ref = &ref;
+}
+
+template <typename T>
+void OptionalRef<T>::clear() noexcept {
+	this->ref = nullptr;
+}
+
+template <typename T>
+OptionalRef<T> & OptionalRef<T>::operator=(T & ref) {
+	this->set(ref);
+	return *this;
+}
+
+template <typename T>
+OptionalRef<T>::operator bool() const noexcept {
+	return this->ref == nullptr;
+}
+
+}
+
-- 
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