add micros-walker (wip)

contrib/walker/example.lisp

@@ -0,0 +1,90 @@
+(block foo
+  (return-from foo 10)
+  (block foo
+    (return-from foo 20)
+    (return-from foo 30))
+  (return-from foo 40))
+
+(let* ((a 0)
+       (b a))
+  (let* ((a a)
+         (b a))
+    a)
+  a)
+
+(let ((a 1))
+  (let ((b a))
+    a
+    b))
+
+(let ((a 0)
+      (b 1))
+  (load-time-value a b)
+  (multiple-value-call 'f a b a)
+  (setq a b
+        b a)
+  (progn a b)
+  (multiple-value-prog1 a
+    b
+    a)
+  (unwind-protect a (the integer b) c))
+
+(lambda (x a b c &key (y x) z &aux (foo 10))
+  x
+  y
+  z
+  foo)
+
+(function (lambda (x a b c &key (y x) z &aux (foo 10))
+            x
+            y
+            z
+            foo))
+
+(flet ((f ()))
+  (flet ((f (&optional (x 1))
+           x
+           #'f
+           (f x)))
+    (f x)
+    #'f))
+
+(labels ((f () (f)))
+  (labels ((f (&optional (x 1))
+             x
+             (f x)))
+    #'f))
+
+(labels ((f (x &key (y x))
+           (g x))
+         (g (y)
+           (f y)))
+  (g 10))
+
+(defmacro with-hoge (() &body body)
+  `(progn ,@body))
+
+(let ((a 0))
+  (do ((x 1 (1+ x)))
+      ((= 10 x))
+    a
+    (let ((a 1))
+      a)
+    b
+    c))
+
+(let ((a 0))
+  (WITH-HOGE NIL
+    A
+    B
+    C))
+
+(eval-when (:compile-toplevel :load-toplevel :execute)
+  (let ((a 0))
+    a))
+
+(macrolet ((with-foo (() &body body)
+             ))
+  (let ((a 0))
+    (with-foo ((aaa ))
+      a)))