From 8baadfc47832bbc3820e7d55adbbe5ddfaffedf3 Mon Sep 17 00:00:00 2001
From: s-ol <s+removethis@s-ol.nu>
Date: Wed, 2 Feb 2022 17:37:58 +0100
Subject: =?UTF-8?q?lib:=20rename=20math=20=E2=86=92=20math-simple,=20add?=
 =?UTF-8?q?=20vectorized=20math?=
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---
 alv/type.moon | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'alv')

diff --git a/alv/type.moon b/alv/type.moon
index 4f38e02..765cab2 100644
--- a/alv/type.moon
+++ b/alv/type.moon
@@ -119,6 +119,12 @@ class Struct extends Type
   get: (key) =>
     assert @types[key], Error 'index', "#{@} has no '#{key}' key"
 
+  --- iterate over contained keys and types
+  -- each iteration, returns a key and associated type
+  -- @treturn string key
+  -- @treturn Type associated type
+  iter_keys: => next, @types, nil
+
   --- create a new struct type with a subset of keys.
   project: (keys) =>
     types = {}
@@ -161,6 +167,13 @@ class Array extends Type
     assert key >= 0 and key < @size, Error 'index', "index '#{key}' out of range!"
     @type
 
+  array_next = (i) => if i < @size then i + 1, @type
+  --- iterate over contained types
+  -- each iteration, returns a key and associated type
+  -- @treturn number key
+  -- @treturn Type associated type
+  iter_keys: => array_next, @, 0
+
   __eq: (other) => other.__class == Array and @size == other.size and @type == other.type
   __tostring: => "#{@type}[#{@size}]"
 
-- 
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