From 3b02770e7f9ec14487493c68ff12ec42e0f2755b Mon Sep 17 00:00:00 2001
From: s-ol <s-ol@users.noreply.github.com>
Date: Tue, 30 Oct 2018 13:41:14 +1100
Subject: reorganize lib

---
 lib/ordered.moon | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 lib/ordered.moon

(limited to 'lib/ordered.moon')

diff --git a/lib/ordered.moon b/lib/ordered.moon
new file mode 100644
index 0000000..59c07bf
--- /dev/null
+++ b/lib/ordered.moon
@@ -0,0 +1,27 @@
+-- ordered table iterator, for stable(r) renderers
+
+sort = (t, order_fn) ->
+  with index = [k for k,v in pairs t when 'string' == type k]
+    table.sort index, order_fn
+
+-- ordered next(t)
+onext = (state, key) ->
+  state.i += 1
+  { :t, :index, :i } = state
+
+  if key = index[i]
+    key, t[key]
+
+-- ordered pairs(t). order_fn is optional; see table.sort
+opairs = (t, order_fn) ->
+  state = {
+    :t,
+    i: 0,
+    index: sort t, order_fn
+  }
+  onext, state, nil
+
+{
+  :onext
+  :opairs
+}
-- 
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