From c03bd9f9787fb9f383c57b4ebb0fa9d49abbfaa1 Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Sun, 3 Jan 2021 07:48:12 -0400
Subject: Place the "program:" macro of "lux/control/parser/cli" in its own
 module.

---
 .../program/aedifex/artifact/time_stamp/date.lux   | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 stdlib/source/program/aedifex/artifact/time_stamp/date.lux

(limited to 'stdlib/source/program/aedifex/artifact/time_stamp/date.lux')

diff --git a/stdlib/source/program/aedifex/artifact/time_stamp/date.lux b/stdlib/source/program/aedifex/artifact/time_stamp/date.lux
new file mode 100644
index 000000000..18df2900b
--- /dev/null
+++ b/stdlib/source/program/aedifex/artifact/time_stamp/date.lux
@@ -0,0 +1,39 @@
+(.module:
+  [lux #*
+   [abstract
+    [monad (#+ do)]]
+   [control
+    ["<>" parser
+     ["<.>" text (#+ Parser)]]]
+   [data
+    [text
+     ["%" format]]]
+   [math
+    [number
+     ["n" nat]]]
+   [time
+    ["." date (#+ Date)]
+    ["." year]
+    ["." month]]])
+
+(def: #export (pad value)
+  (-> Nat Text)
+  (if (n.< 10 value)
+    (%.format "0" (%.nat value))
+    (%.nat value)))
+
+(def: #export (format value)
+  (%.Format Date)
+  (%.format (|> value date.year year.value .nat %.nat)
+            (|> value date.month month.number ..pad)
+            (|> value date.day_of_month ..pad)))
+
+(def: #export parser
+  (Parser Date)
+  (do <>.monad
+    [year (<>.codec n.decimal (<text>.exactly 4 <text>.decimal))
+     year (<>.lift (year.year (.int year)))
+     month (<>.codec n.decimal (<text>.exactly 2 <text>.decimal))
+     month (<>.lift (month.by_number month))
+     day_of_month (<>.codec n.decimal (<text>.exactly 2 <text>.decimal))]
+    (<>.lift (date.date year month day_of_month))))
-- 
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