Put everything back.

ctrtool/deps/libtoolchain/include/tc/io/IReadableSink.h

@@ -0,0 +1,28 @@
+	/**
+	 * @file IReadableSink.h
+	 * @brief Declaration of tc::io::IReadableSink
+	 * @author Jack (jakcron)
+	 * @version 0.1
+	 * @date 2020/02/07
+	 **/
+#pragma once
+#include <tc/io/ISink.h>
+#include <tc/io/ISource.h>
+
+namespace tc { namespace io {
+
+	/**
+	 * @class IReadableSink
+	 * @brief An interface defining a byte data sink that can be also provide an ISource.
+	 **/
+class IReadableSink : public tc::io::ISink
+{
+public:
+		/// Destructor
+	virtual ~IReadableSink() = default;
+
+		/// Convert to ISource
+	virtual std::shared_ptr<tc::io::ISource>& toSource() = 0;
+};
+
+}} // namespace tc::io