Add new syntax to lexer and prepare refactor

1 files changed, 3 insertions, 0 deletions

diff --git a/src/string_view.h b/src/string_view.h
index 4dbbaaf..cb0f488 100644
--- a/src/string_view.h
+++ b/src/string_view.h
@@ -11,6 +11,9 @@ typedef struct StringView {
 // Consume a character in the stream.
 char sv_next(StringView *sv);
 
+// Rewind a character in the stream.
+void sv_rewind(StringView *sv);
+
 // Check what is the current character in the stream.
 char sv_peek(const StringView *sv);