1 files changed, 21 insertions, 0 deletions
diff --git a/2021/day4/reader.rkt b/2021/day4/reader.rkt
new file mode 100644
index 0000000..b777f92
--- /dev/null
+++ b/2021/day4/reader.rkt
@@ -0,0 +1,21 @@
+#lang racket
+
+(require "parser.rkt")
+(require brag/support)
+
+(define (make-tokenizer port)
+  (define (next-token)
+    (define bf-lexer
+      (lexer
+       [(char-set "\n1234567890, ") lexeme]
+       [any-char (next-token)]))
+    (bf-lexer port))
+  next-token)
+
+(define (read-syntax path port)
+  (define parse-tree (parse path (make-tokenizer port)))
+  (define module-datum `(module day4 racket
+                          ,parse-tree))
+  (datum->syntax #f module-datum))
+
+(provide read-syntax)