diff --git a/src/protocol/lexer2.rs b/src/protocol/lexer2.rs
new file mode 100644
index 0000000000000000000000000000000000000000..68d39e006e7b820c0aa6e376dff1b21a7d4f3974
--- /dev/null
+++ b/src/protocol/lexer2.rs
@@ -0,0 +1,4 @@
+
+pub struct Lexer<'a> {
+    source: &'a mut InputSource,
+}
\ No newline at end of file