[honu] handle empty files

collects/honu/core/private/honu-typed-scheme.rkt

@@ -452,9 +452,12 @@ Then, in the pattern above for 'if', 'then' would be bound to the following synt
 (define-syntax (honu-unparsed-begin stx)
   (emit-remark "Honu unparsed begin!" stx)
   (debug "honu unparsed begin: ~a at phase ~a\n" (syntax->datum stx) (syntax-local-phase-level))
-  (define expanded (honu-expand (stx-cdr stx)))
-  (debug "expanded ~a\n" expanded)
-  expanded)
+  (syntax-parse stx
+    [(_) #'(void)]
+    [(_ forms ...)
+     (define expanded (honu-expand #'(forms ...)))
+     (debug "expanded ~a\n" expanded)
+     expanded]))
 
 (define-syntax (#%dynamic-honu-module-begin stx)
   (syntax-case stx ()

collects/honu/core/read.rkt

@@ -153,7 +153,7 @@
     ;; (printf "next ~a\n" next)
     (match next
       [(struct* position-token ([token (? token-eof?)] [start-pos start] [end-pos end]))
-       ;; (printf "done lexing\n")
+       ; (printf "done lexing ~a\n" tokens)
        (reverse tokens)]
       [(struct* position-token ([token (? token-end-of-line-comment?)]
                                  [start-pos start]
@@ -357,7 +357,7 @@
         [else (loop (cdr use))])))
 
   (if (null? tokens)
-    eof
+    (datum->syntax #f '() #f)
     (datum->syntax #f (do-parse '() tokens dispatch-table)
                    #f)))
 
@@ -380,6 +380,7 @@
   (port-count-lines! port)
   port)
 
+#;
 (test-case
   "Basic tests"
   (check-equal? (strip (lex-string "5"))