From 20d28e80a5c861a9d5f449ea911ab75b4f37ad0d Mon Sep 17 00:00:00 2001
From: Jef <jef@targetspot.com>
Date: Tue, 24 Sep 2024 14:54:57 +0200
Subject: Initial community commit

---
 Src/replicant/nu/SafeSize.h | 51 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Src/replicant/nu/SafeSize.h

(limited to 'Src/replicant/nu/SafeSize.h')

diff --git a/Src/replicant/nu/SafeSize.h b/Src/replicant/nu/SafeSize.h
new file mode 100644
index 00000000..02c97a07
--- /dev/null
+++ b/Src/replicant/nu/SafeSize.h
@@ -0,0 +1,51 @@
+#pragma once
+
+class SafeSize
+{
+public:
+	SafeSize()
+	{
+		value = 0;
+		overflow = false;
+	}
+
+	void Add(size_t add)
+	{
+		if (!overflow)
+		{
+			value += add;
+			if (value < add)
+				overflow=true;
+		}
+	}
+
+	void AddN(size_t size, size_t count)
+	{
+		if (!overflow)
+		{
+			size_t total = size * count;
+			if (total < size)
+			{
+				overflow = true;
+			}
+			else
+			{
+				Add(total);
+			}
+		}
+	}
+
+	bool Overflowed() const
+	{
+		return overflow;
+	}
+
+	operator size_t ()
+	{
+		return value;
+	}
+
+private:
+	size_t value;
+	bool overflow;
+};
\ No newline at end of file
-- 
cgit