Add a #:verbose option to :type.

This prints the old way, expanding all aliases inside the type.
(cherry picked from commit 1f5b262f6d)

collects/tests/typed-racket/succeed/type-printer-single-level.rkt

@@ -21,3 +21,16 @@
 (tr-eval '(:type Bar))
 
 (check-equal? (get-output-string out) "(U Integer String)\n(Foo -> Foo)\n")
+
+;; if #:verbose, make sure it's the full type
+(tr-eval '(:type #:verbose Bar))
+(check-equal? (get-output-string out)
+              (string-append "(U Integer String)\n(Foo -> Foo)\n"
+                             "((U 0 1 Byte-Larger-Than-One Positive-Index-Not-Byte "
+                             "Positive-Fixnum-Not-Index Negative-Fixnum "
+                             "Positive-Integer-Not-Fixnum Negative-Integer-Not-Fixnum String) "
+                             "-> (U 0 1 Byte-Larger-Than-One Positive-Index-Not-Byte "
+                             "Positive-Fixnum-Not-Index Negative-Fixnum "
+                             "Positive-Integer-Not-Fixnum Negative-Integer-Not-Fixnum "
+                             "String))\n"))
+

collects/typed-racket/core.rkt

@@ -53,8 +53,16 @@
   (syntax-parse stx
     [(_ . ((~datum module) . rest))
      #'(module . rest)]
-    [(_ . ((~literal :type) ty:expr))
+    [(_ . ((~literal :type)
-     (parameterize ([current-print-type-fuel 1])
+           (~optional (~and #:verbose verbose-kw))
+           ty:expr))
+     (parameterize ([current-print-type-fuel
+                     (if (attribute verbose-kw) +inf.0 1)]
+                    ;; This makes sure unions are totally flat for the
+                    ;; infinite fuel case. If fuel that's not 0, 1, or +inf.0
+                    ;; is ever used, more may need to be done.
+                    [current-type-names
+                     (if (attribute verbose-kw) '() (current-type-names))])
        #`(display #,(format "~a\n" (parse-type #'ty))))]
     ;; Prints the _entire_ type. May be quite large.
     [(_ . ((~literal :print-type) e:expr))