From 384553ba9ddece11038eb2b4ecbd04d947c23300 Mon Sep 17 00:00:00 2001
From: mryouse
Date: Wed, 15 Jun 2022 21:45:02 +0000
Subject: filter supports lambdas

---
 interpreter.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/interpreter.py b/interpreter.py
index 000b3c2..da8cc96 100644
--- a/interpreter.py
+++ b/interpreter.py
@@ -34,6 +34,7 @@ class Function:
         self.body = body
         self.args = args
         self.many = many
+        self.type_ = TypeEnum.ANY  # TODO no it's not
 
     def describe(self, name=None):
         if name is None:
@@ -859,18 +860,18 @@ GLOBALS.register("floor", Builtin(interpretFloor, [Arg("floor", TypeEnum.NUMBER,
 def interpretFilter(symbol, args, env, ns):
     # TODO: to support lambdas, we can't assume the func is defined
     func = args[0]
-    if not isinstance(func, Symbol):
-        raise InterpretPanic(symbol, "requires a symbol as its first argument", func)
+    if not isinstance(func, Function):
+        raise InterpretPanic(symbol, "requires a :func as its first argument", func)
     lst = evaluate(args[1], env, ns)
     if not isinstance(lst, List):
         raise InterpretPanic(symbol, "requires a :list as its second argument", lst)
     out = []
     for arg in lst.args:
-        ev = evaluate(List([func, arg]), env, ns)
+        ev = func.call(List([func, arg]), env, ns)
         if not isinstance(ev, Bool):
             raise InterpretPanic(symbol, "function must return :bool", ev)
         if ev.value:
             out.append(arg)
     return List(out, True)
 
-GLOBALS.register("filter", Builtin(interpretFilter, [Arg("func", TypeEnum.ANY, False, True), Arg("list", TypeEnum.LIST, False, False)]))
+GLOBALS.register("filter", Builtin(interpretFilter, [Arg("func", TypeEnum.ANY, False, False), Arg("list", TypeEnum.LIST, False, False)]))
-- 
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