1 files changed, 23 insertions, 15 deletions
diff --git a/examples/calc.lisp b/examples/calc.lisp
index 7b2f9ef..4d8766a 100644
--- a/examples/calc.lisp
+++ b/examples/calc.lisp
@@ -6,21 +6,29 @@
 (in-package #:argot.examples.calc)
 
 (deflanguage calc (:documentation "A calculator language")
-  (<calc> :-> (:or
-               (:seq <subexpr> (:eof))
-               (:seq <value> (:eof))
-               (:seq <unop> (:eof))
-               (:seq <binop> (:eof)))
-          :then car)
-  (<expr>  :-> (:or <subexpr> <value> <unop> <binop>))
-  (<subexpr> :-> (:item)
-             :if listp
-             :then (argot:parse calc <subexpr>))
-  (<value> :-> (:item) :if numberp)
-  (<binop> :-> (:seq (:@ lhs <expr>)
-                     (:@ rhs (:+ (:seq (:or= + - / * ^ %) <expr>))))
-           :then (expand-binop lhs rhs))
-  (<unop>  :-> (:seq (:or= sin cos tan -) <expr>)))
+  (<calc>
+   :match (:or
+           (:seq <subexpr> (:eof))
+           (:seq <value> (:eof))
+           (:seq <unop> (:eof))
+           (:seq <binop> (:eof)))
+   :then car)
+  (<expr>
+   :match (:or <subexpr> <value> <unop> <binop>))
+  (<subexpr>
+   :match (:item)
+   :if listp
+   :then (argot:parse calc <subexpr>))
+  (<value>
+   :match (:item)
+   :if numberp)
+  (<binop>
+   :match (:seq
+            (:@ lhs <expr>)
+            (:@ rhs (:+ (:seq (:or= + - / * ^ %) <expr>))))
+   :then (expand-binop lhs rhs))
+  (<unop>
+   :match (:seq (:or= sin cos tan -) <expr>)))
 
 
 (defun lassoc? (op)