util: Add a postfix increment operator to BitStream::stream_pos

include/ki/util/BitStream.h

@@ -7,11 +7,10 @@
 namespace ki
 {
 	/**
-	 * 
+	 * A readable/writeable stream of bits.
 	 */
 	class BitStream
 	{
-
 	public:
 		/**
 		 * Represents a position in a BitStream's buffer.
@@ -34,6 +33,8 @@ namespace ki
 			stream_pos &operator -=(int bits);
 			stream_pos &operator ++();
 			stream_pos &operator --();
+			stream_pos operator ++(int increment);
+			stream_pos operator --(int increment);
 
 		private:
 			intmax_t m_byte;

src/util/BitStream.cpp

@@ -118,6 +118,20 @@ namespace ki
 		return *this;
 	}
 
+	BitStream::stream_pos BitStream::stream_pos::operator++(int increment)
+	{
+		auto copy(*this);
+		++(*this);
+		return copy;
+	}
+
+	BitStream::stream_pos BitStream::stream_pos::operator--(int increment)
+	{
+		auto copy(*this);
+		--(*this);
+		return copy;
+	}
+
 	BitStream::BitStream(const size_t buffer_size)
 	{
 		m_buffer = new uint8_t[buffer_size] { 0 };