1 files changed, 52 insertions, 0 deletions
diff --git a/antiformatter/src/formatter.rkt b/antiformatter/src/formatter.rkt
new file mode 100644
index 0000000..770251f
--- /dev/null
+++ b/antiformatter/src/formatter.rkt
@@ -0,0 +1,52 @@
+#lang racket
+
+(require racket/cmdline)
+(provide mangle mangle-parens? mangle-indents? mangle-newlines?)
+
+(define (random-paren)
+  (match (random 0 3)
+    (0 (list "(" ")"))
+    (1 (list "[" "]"))
+    (2 (list "{" "}"))))
+
+(define (random-newline)
+  (make-string (random 0 3) #\newline))
+
+(define (random-indentation at-least)
+  (make-string (+ at-least (random 0 3)) #\space))
+
+(define indent 0)
+(define mangle-parens? (make-parameter #t))
+(define mangle-indents? (make-parameter #f))
+(define mangle-newlines? (make-parameter #t))
+
+; horrid hack
+(define (mangle sexp)
+  (string-append "#lang racket \n"
+    (mangle-sexp (rest (first (rest (rest (rest (first sexp)))))))))
+
+(define (mangle-sexp sexp)
+  (set! indent (+ indent 2))
+  (if (not (list? sexp)) (error 'mangle "not an s-exp")
+    (if (empty? sexp) ""
+      (let ((paren (random-paren)))
+        (string-append
+          (if (mangle-indents?) (random-indentation indent) "")
+          (if (mangle-parens?) (first paren) ")")
+          (mangle-params sexp)
+          (if (mangle-newlines?) (random-newline) "")
+          (if (mangle-indents?) (random-indentation indent) "")
+          (if (mangle-parens?) (last paren) ")"))))))
+
+(define (mangle-params sexp)
+  (set! indent (max (- indent 2) 0))
+  (if (not (list? sexp)) (~a sexp)
+    (if (empty? sexp) ""
+      (let ((param (first sexp)))
+        (string-join (list
+          (if (list? param)
+            (mangle-sexp param)
+            (if (string? param)
+              (string-append "\"" (~a param) "\"")
+              (~a param)))
+          (mangle-params (rest sexp))))))))