hy: Add missing cond macro

ragne · Oct 23, 2017 · 27a793e · 27a793e
1 parent 2ff47a3
commit 27a793e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/hy/stepA_mal.hy b/hy/stepA_mal.hy
@@ -174,6 +174,7 @@
 (REP "(def! *gensym-counter* (atom 0))")
 (REP "(def! gensym (fn* [] (symbol (str \"G__\" (swap! *gensym-counter* (fn* [x] (+ 1 x)))))))")
 (REP "(defmacro! or (fn* (& xs) (if (empty? xs) nil (if (= 1 (count xs)) (first xs) (let* (condvar (gensym)) `(let* (~condvar ~(first xs)) (if ~condvar ~condvar (or ~@(rest xs)))))))))")
+(REP "(defmacro! cond (fn* (& xs) (if (> (count xs) 0) (list 'if (first xs) (if (> (count xs) 1) (nth xs 1) (throw \"odd number of forms to cond\")) (cons 'cond (rest (rest xs)))))))")
 
 (defmain [&rest args]
   (if (>= (len args) 2)