Fixed bug in MCE. Now working!

[scheme.forth.jl.git] / examples / metacirc.scm

diff --git a/examples/metacirc.scm b/examples/metacirc.scm
index d63e685..170adaa 100644 (file)
--- a/examples/metacirc.scm
+++ b/examples/metacirc.scm
@@ -88,6 +88,13 @@
     env)
   'ok)
 
+(define (eval-definition exp env)
+  (define-variable! 
+    (definition-variable exp)
+    (eval (definition-value exp) env)
+    env)
+  'ok)
+
 (define (self-evaluating? exp)
   (cond ((number? exp) true)
         ((string? exp) true)
@@ -329,6 +336,7 @@
     (define-variable! 'false false initial-env)
     initial-env))
 
+
 (define (primitive-procedure? proc)
   (tagged-list? proc 'primitive))
 
@@ -352,8 +360,6 @@
          (list 'primitive (cadr proc)))
        primitive-procedures))
 
-
-
 (define (apply-primitive-procedure proc args)
     (apply-in-underlying-scheme
          (primitive-implementation proc) args))
@@ -390,4 +396,6 @@
             '<procedure-env>))
     (display object)))
 
-;; (define the-global-environment (setup-environment))
+
+(define the-global-environment (setup-environment))
+