Report optimizations and missed optimizations with the DrRacket tool.

Currently, that just means showing the text that would be shown on the
command line. Eventually, it should highlight code in the editor, and
have tooltips explaining what happened.

collects/typed-scheme/optimizer/tool/tool.rkt

@@ -1,8 +1,11 @@
 #lang racket/base
 
-(require racket/unit racket/class
+(require racket/unit racket/class racket/port
          racket/gui/base mrlib/switchable-button)
 
+(require (prefix-in tr: typed-scheme/typed-reader)
+         typed-scheme/optimizer/logging)
+
 (provide performance-report-drracket-button)
 
 ;; DrRacket tool for reporting missed optimizations in the editor.
@@ -20,10 +23,25 @@
     (send bdc set-bitmap #f)
     bmp))
 
+;; performance-report-callback : drracket:unit:frame<%> -> void
+(define (performance-report-callback drr-frame)
+  (define defs     (send drr-frame get-definitions-text)) ; : text%
+  (define portname (send defs get-filename))
+  (message-box
+   "Performance Report"
+   (with-output-to-string
+     (lambda ()
+       (with-tr-logging-to-port
+        (current-output-port)
+        (lambda ()
+          (parameterize ([current-namespace  (make-base-namespace)]
+                         [read-accept-reader #t])
+            (expand
+             (tr:read-syntax portname
+                             (open-input-string (send defs get-text)))))))))))
+
 (define performance-report-drracket-button
   (list
    "Performance Report"
    reverse-content-bitmap
-   (λ (drs-frame)
-      (message-box "Performance Report"
-                   "Coming Soon!"))))
+   performance-report-callback))