1 files changed, 20 insertions, 0 deletions
diff --git a/deimos/core/io.h b/deimos/core/io.h
index 90caadc..12de30e 100644
--- a/deimos/core/io.h
+++ b/deimos/core/io.h
@@ -17,5 +17,25 @@ public:
     virtual void Write(Span<const std::byte>) = 0;
 };
 
+class BufferWriter : public IWriter
+{
+    std::byte*      m_buffer;
+    int64_t         m_size;
+    int64_t         m_written = 0;
+
+public:
+    explicit BufferWriter(Span<std::byte> buffer) :
+        m_buffer{buffer.begin()},
+        m_size{buffer.size()}
+    {}
+
+    void Write(Span<const std::byte>) override;
+
+    constexpr Span<const std::byte> GetWritten() const
+    {
+        return { m_buffer, m_written };
+    }
+};
+
 } // namespace deimos