From a13b3697924cc08738bfad6a54007d9219893412 Mon Sep 17 00:00:00 2001
From: Gary Talent <gtalent2@gmail.com>
Date: Wed, 2 May 2018 21:11:49 -0500
Subject: [PATCH] [ox/buffer] Add copy constructor to NodeBuffer

---
 deps/ox/src/ox/ptrarith/nodebuffer.hpp | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/deps/ox/src/ox/ptrarith/nodebuffer.hpp b/deps/ox/src/ox/ptrarith/nodebuffer.hpp
index 920e1618..4ab16e7d 100644
--- a/deps/ox/src/ox/ptrarith/nodebuffer.hpp
+++ b/deps/ox/src/ox/ptrarith/nodebuffer.hpp
@@ -75,6 +75,8 @@ class __attribute__((packed)) NodeBuffer {
 	public:
 		NodeBuffer() = default;
 
+		NodeBuffer(const NodeBuffer &other);
+
 		explicit NodeBuffer(size_t size);
 
 		const Iterator iterator() const;
@@ -120,9 +122,11 @@ class __attribute__((packed)) NodeBuffer {
 		 */
 		size_t spaceNeeded(size_t size);
 
-	private:
-		void compact(void (*cb)(ItemPtr itemMoved));
+		void compact(void (*cb)(ItemPtr itemMoved) = nullptr);
 
+		void truncate();
+
+	private:
 		uint8_t *data();
 
 };
@@ -132,6 +136,11 @@ NodeBuffer<size_t, Item>::NodeBuffer(size_t size) {
 	m_header.size = size;
 }
 
+template<typename size_t, typename Item>
+NodeBuffer<size_t, Item>::NodeBuffer(const NodeBuffer &other) {
+	ox_memcpy(this, &other, other.size());
+}
+
 template<typename size_t, typename Item>
 const typename NodeBuffer<size_t, Item>::Iterator NodeBuffer<size_t, Item>::iterator() const {
 	return Iterator(this, firstItem());
@@ -314,6 +323,11 @@ void NodeBuffer<size_t, Item>::compact(void (*cb)(ItemPtr)) {
 	}
 }
 
+template<typename size_t, typename Item>
+void NodeBuffer<size_t, Item>::truncate() {
+	m_header.size = m_header.bytesUsed;
+}
+
 template<typename size_t, typename Item>
 uint8_t *NodeBuffer<size_t, Item>::data() {
 	return reinterpret_cast<uint8_t*>(ptr(sizeof(*this)).get());