Heh, now I can run a REPL

hy/compiler/modfaker.py

@@ -15,6 +15,10 @@ def _add_native_methods(mod):
             sys.stdout.flush()
 
 
+        def _read(*args):
+            return sys.stdin.readline()
+
+
         def _lex(*args):
             ret = []
             for thing in args:
@@ -124,7 +128,8 @@ def _add_native_methods(mod):
             "<=": _le,
             "!=": _ne,
             "eval": _eval,
-            "lex": _lex
+            "lex": _lex,
+            "read": _read,
         }
 
         for native in natives:

hy/lang/builtins.py

@@ -9,6 +9,14 @@ def _define(obj, lns):
     obj.namespace[args[0]] = args[1]()
 
 
+def _loop(obj, lns):
+    fd = obj.get_invocation()
+    args = fd['args']
+    while True:
+        for arg in args:
+            arg.eval(lns.clone())
+
+
 def _fn(obj, lns):
     fd = obj.get_invocation()
     args = fd['args']
@@ -62,4 +70,5 @@ builtins = {
     "import": _import,
     "kwapply": _kwapply,
     "if": _if,
+    "loop": _loop
 }