X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-cltl2%2Fcompiler-let.lisp;h=6b82f8dea9b073be571825fbfd1a3e797894909c;hb=970dd272dc84f7420252eadb4829cc193f795716;hp=932b4cb5e73e138b72dda367b8d0739a1be25736;hpb=485d9c8e2d3a4ae0561cd57b55a6c6a28cd4bce4;p=sbcl.git

diff --git a/contrib/sb-cltl2/compiler-let.lisp b/contrib/sb-cltl2/compiler-let.lisp
index 932b4cb..6b82f8d 100644
--- a/contrib/sb-cltl2/compiler-let.lisp
+++ b/contrib/sb-cltl2/compiler-let.lisp
@@ -29,3 +29,21 @@
                                          'compiler-let bindings walked-body)))))))
 
 (sb-walker::define-walker-template compiler-let walk-compiler-let)
+
+#+sb-eval
+(setf (getf sb-eval::*eval-dispatch-functions* 'compiler-let)
+      (lambda (form env)
+        (destructuring-bind (bindings &body body) (cdr form)
+          (loop for binding in bindings
+                if (atom binding)
+                collect binding into vars
+                and collect nil into values
+                else do (assert (proper-list-of-length-p binding 1 2))
+                and collect (first binding) into vars
+                and collect (eval (second binding)) into values
+                finally (return
+                          (let ((new-env (sb-eval::make-env
+                                          :parent env
+                                          :vars (sb-eval::special-bindings vars))))
+                            (progv vars values
+                              (sb-eval::eval-progn body new-env))))))))