1 files changed, 8 insertions, 0 deletions
diff --git a/subex/lex.go b/subex/lex.go
index 74bf370..0f00a99 100644
--- a/subex/lex.go
+++ b/subex/lex.go
@@ -22,3 +22,11 @@ func (l *StringRuneReader) Next() rune {
 func (l *StringRuneReader) Rewind() {
 	l.pos -= l.width
 }
+
+func NewStringRuneReader(input string) RuneReader {
+	return &StringRuneReader {
+		input: input,
+		pos: 0,
+		width: 0,
+	}
+}