From 169cb88b8ec774868ce8befbc0ccb2be6a91aa73 Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Tue, 4 Dec 2018 20:27:33 -0400
Subject: Restored the "encode" function for duration, to correct for overkill
 when removing contributor code.

---
 stdlib/source/lux/data/text/format.lux    |  5 +++++
 stdlib/source/lux/macro/poly/json.lux     |  6 +++---
 stdlib/source/lux/time/duration.lux       | 25 +++++++++++++++++++++++++
 stdlib/test/test/lux/data/format/json.lux | 11 ++++++-----
 4 files changed, 39 insertions(+), 8 deletions(-)

diff --git a/stdlib/source/lux/data/text/format.lux b/stdlib/source/lux/data/text/format.lux
index ad0653e76..234a639f2 100644
--- a/stdlib/source/lux/data/text/format.lux
+++ b/stdlib/source/lux/data/text/format.lux
@@ -15,6 +15,7 @@
      [list ("list/." Monad<List>)]]]
    [time
     ["." instant]
+    ["." duration]
     ["." date]]
    [math
     ["." modular]]
@@ -57,6 +58,10 @@
   [%date     date.Date         (:: date.Codec<Text,Date> encode)]
   )
 
+(def: #export %duration
+  (Format duration.Duration)
+  duration.encode)
+
 (def: #export (%cursor [file line column])
   (Format Cursor)
   (|> (list (%t file) (%n line) (%n column))
diff --git a/stdlib/source/lux/macro/poly/json.lux b/stdlib/source/lux/macro/poly/json.lux
index f1a5a840a..96c647c6b 100644
--- a/stdlib/source/lux/macro/poly/json.lux
+++ b/stdlib/source/lux/macro/poly/json.lux
@@ -24,7 +24,7 @@
      ["d" dictionary]]]
    [time
     ## ["i" instant]
-    ["du" duration]
+    ## ["du" duration]
     ["da" date]]
    [macro (#+ with-gensyms)
     ["s" syntax (#+ syntax:)]
@@ -103,7 +103,7 @@
                  (wrap (` (: (~ (@JSON//encode inputT))
                              (|>> (:: <codec> (~' encode)) #//.String)))))]
 
-              [du.Duration du.Codec<Text,Duration>]
+              ## [du.Duration du.Codec<Text,Duration>]
               ## [i.Instant   i.Codec<Text,Instant>]
               [da.Date     da.Codec<Text,Date>]
               [da.Day      da.Codec<Text,Day>]
@@ -219,7 +219,7 @@
                  (wrap (` (: (~ (@JSON//decode inputT))
                              (p.codec <codec> //.string)))))]
 
-              [du.Duration du.Codec<Text,Duration>]
+              ## [du.Duration du.Codec<Text,Duration>]
               ## [i.Instant   i.Codec<Text,Instant>]
               [da.Date     da.Codec<Text,Date>]
               [da.Day      da.Codec<Text,Day>]
diff --git a/stdlib/source/lux/time/duration.lux b/stdlib/source/lux/time/duration.lux
index a39e6f9ed..35401497a 100644
--- a/stdlib/source/lux/time/duration.lux
+++ b/stdlib/source/lux/time/duration.lux
@@ -108,3 +108,28 @@
 (structure: #export _ (Monoid Duration)
   (def: identity empty)
   (def: compose merge))
+
+(def: #export (encode duration)		
+  (-> Duration Text)		
+  (if (:: Equivalence<Duration> = empty duration)		
+    "+0ms"		
+    (let [signed? (negative? duration)		
+          [days time-left] [(query day duration) (frame day duration)]		
+          days (if signed?		
+                 (int/abs days)		
+                 days)		
+          time-left (if signed?		
+                      (scale-up -1 time-left)		
+                      time-left)		
+          [hours time-left] [(query hour time-left) (frame hour time-left)]		
+          [minutes time-left] [(query minute time-left) (frame minute time-left)]		
+          [seconds time-left] [(query second time-left) (frame second time-left)]		
+          millis (to-millis time-left)]		
+      ($_ text/compose		
+          (if signed? "-" "+")		
+          (if (i/= +0 days) "" (text/compose (nat/encode (.nat days)) "D"))		
+          (if (i/= +0 hours) "" (text/compose (nat/encode (.nat hours)) "h"))		
+          (if (i/= +0 minutes) "" (text/compose (nat/encode (.nat minutes)) "m"))		
+          (if (i/= +0 seconds) "" (text/compose (nat/encode (.nat seconds)) "s"))		
+          (if (i/= +0 millis) "" (text/compose (nat/encode (.nat millis)) "ms"))		
+          ))))
diff --git a/stdlib/test/test/lux/data/format/json.lux b/stdlib/test/test/lux/data/format/json.lux
index dc30d54d7..0f905a844 100644
--- a/stdlib/test/test/lux/data/format/json.lux
+++ b/stdlib/test/test/lux/data/format/json.lux
@@ -30,13 +30,14 @@
    [time
     ["ti" instant]
     ["tda" date]
-    ["tdu" duration]]
+    ## ["tdu" duration]
+    ]
    test]
   [test
    [lux
     [time
      ["_." instant]
-     ["_." duration]
+     ## ["_." duration]
      ["_." date]]]]
   )
 
@@ -93,7 +94,7 @@
    ## #tuple [Bit Frac Text]
    #recursive Recursive
    ## #instant ti.Instant
-   #duration tdu.Duration
+   ## #duration tdu.Duration
    #date tda.Date
    #grams (unit.Qty unit.Gram)
    })
@@ -125,7 +126,7 @@
         ## ($_ r.and r.bit r.frac (r.unicode size))
         gen-recursive
         ## _instant.instant
-        _duration.duration
+        ## _duration.duration
         _date.date
         qty
         )))
@@ -161,7 +162,7 @@
            ##        (:: text.Equivalence<Text> = tL2 tR2)))
            (:: Equivalence<Recursive> = (get@ #recursive recL) (get@ #recursive recR))
            ## (:: ti.Equivalence<Instant> = (get@ #instant recL) (get@ #instant recR))
-           (:: tdu.Equivalence<Duration> = (get@ #duration recL) (get@ #duration recR))
+           ## (:: tdu.Equivalence<Duration> = (get@ #duration recL) (get@ #duration recR))
            (:: tda.Equivalence<Date> = (get@ #date recL) (get@ #date recR))
            (:: unit.Equivalence<Unit> = (get@ #grams recL) (get@ #grams recR))
            ))))
-- 
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