Move dependencies to the top level.

deps/libtoolchain/include/tc/io/StreamUtil.h

@@ -0,0 +1,37 @@
+	/**
+	 * @file StreamUtil.h
+	 * @brief Declaration of tc::io::StreamUtil
+	 * @author Jack (jakcron)
+	 * @version 0.2
+	 * @date 2020/04/06
+	 **/
+#pragma once
+#include <tc/io/IStream.h>
+
+#include <tc/ArgumentOutOfRangeException.h>
+
+namespace tc { namespace io {
+
+	/**
+	 * @class StreamUtil
+	 * @brief Utility class for IStream objects.
+	 **/
+class StreamUtil
+{
+public:
+		/**
+		 * @brief Get the logical result for seek(), given the current position and stream length.
+		 * 
+		 * @param[in] offset A byte offset relative to the origin parameter.
+		 * @param[in] origin A value of type @ref tc::io::SeekOrigin indicating the reference point used to obtain the new position.
+		 * @param[in] current_position The current byte offset relative to the beginning of the stream.
+		 * @param[in] stream_length The length of the stream.
+		 * 
+		 * @return The new position within the stream.
+		 * 
+		 * @throw tc::ArgumentOutOfRangeException @p origin has an illegal value.
+		 **/
+	static int64_t getSeekResult(int64_t offset, tc::io::SeekOrigin origin, int64_t current_position, int64_t stream_length);
+};
+
+}} // namespace tc::io