From 94f76a1565f09d189d9f2cef6d3df7860321709e Mon Sep 17 00:00:00 2001
From: Jose Antonio Ortega Ruiz <jao@gnu.org>
Date: Sun, 23 May 2010 23:10:52 +0200
Subject: Racket support (PLT 5 needed).

---
 scheme/plt/geiser/eval.rkt | 81 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 scheme/plt/geiser/eval.rkt

(limited to 'scheme/plt/geiser/eval.rkt')

diff --git a/scheme/plt/geiser/eval.rkt b/scheme/plt/geiser/eval.rkt
new file mode 100644
index 0000000..79f212e
--- /dev/null
+++ b/scheme/plt/geiser/eval.rkt
@@ -0,0 +1,81 @@
+;;; eval.ss -- evaluation
+
+;; Copyright (C) 2009, 2010 Jose Antonio Ortega Ruiz
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the Modified BSD License. You should
+;; have received a copy of the license along with this program. If
+;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
+
+;; Start date: Sun Apr 26, 2009 00:44
+
+#lang scheme
+
+(provide eval-in
+         compile-in
+         load-file
+         compile-file
+         macroexpand
+         make-repl-reader)
+
+(require scheme/enter geiser/modules geiser/autodoc)
+
+(define last-result (void))
+
+(define namespace->module-name
+  (compose module-path-name->name namespace->module-path-name))
+
+(define last-namespace (make-parameter (current-namespace)))
+
+(define (exn-key e)
+  (vector-ref (struct->vector e) 0))
+
+(define (set-last-error e)
+  (set! last-result `((error (key . ,(exn-key e)))))
+  (display (exn-message e)))
+
+(define (write-value v)
+  (with-output-to-string
+    (lambda () (write v))))
+
+(define (set-last-result . vs)
+  (set! last-result `((result  ,@(map write-value vs)))))
+
+(define (call-with-result thunk)
+  (set-last-result (void))
+  (let ((output
+         (with-output-to-string
+           (lambda ()
+             (with-handlers ((exn? set-last-error))
+               (call-with-values thunk set-last-result))))))
+    (append last-result `((output . ,output)))))
+
+(define (eval-in form spec lang)
+  (call-with-result
+   (lambda ()
+     (update-signature-cache spec form)
+     (eval form (module-spec->namespace spec lang)))))
+
+(define compile-in eval-in)
+
+(define (load-file file)
+  (call-with-result
+   (lambda ()
+     (load-module file (current-output-port) (last-namespace))
+     (update-signature-cache file))))
+
+(define compile-file load-file)
+
+(define (macroexpand form . all)
+  (let ((all (and (not (null? all)) (car all))))
+    (with-output-to-string
+      (lambda ()
+        (pretty-print (syntax->datum ((if all expand expand-once) form)))))))
+
+(define (make-repl-reader builtin-reader)
+  (lambda (ns)
+    (last-namespace ns)
+    (printf "racket@~a" (namespace->module-name ns))
+    (builtin-reader)))
+
+;;; eval.ss ends here
-- 
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