1 files changed, 18 insertions, 0 deletions
diff --git a/deimos/core/io.cpp b/deimos/core/io.cpp
new file mode 100644
index 0000000..7764ee2
--- /dev/null
+++ b/deimos/core/io.cpp
@@ -0,0 +1,18 @@
+#include "deimos/core/io.h"
+
+namespace deimos
+{
+
+void BufferWriter::Write(Span<const std::byte> to_write)
+{
+    Expects(m_written <= m_size);
+
+    int64_t n_to_write = Min(to_write.size(), m_size - m_written);
+    MemoryCopy(m_buffer + m_written, to_write.data(), n_to_write); // NOLINT
+    m_written += n_to_write;
+
+    Ensures(m_written <= m_size);
+}
+
+} // namespace deimos
+