From 498af2e0123c1ce65e46bf15fe3854266ad58f53 Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Sun, 21 Jan 2018 12:58:48 -0400
Subject: - WIP: Host procedures for JS.

---
 .../source/luxc/lang/translation/js/loop.jvm.lux   | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 new-luxc/source/luxc/lang/translation/js/loop.jvm.lux

(limited to 'new-luxc/source/luxc/lang/translation/js/loop.jvm.lux')

diff --git a/new-luxc/source/luxc/lang/translation/js/loop.jvm.lux b/new-luxc/source/luxc/lang/translation/js/loop.jvm.lux
new file mode 100644
index 000000000..64b2e5b39
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/js/loop.jvm.lux
@@ -0,0 +1,31 @@
+(.module:
+  lux
+  (lux (control [monad #+ do])
+       (data [text]
+             text/format
+             (coll [list "list/" Functor<List>]))
+       [macro])
+  (luxc (lang ["ls" synthesis]))
+  [//]
+  (// [".T" reference]))
+
+(def: #export loop-name Text "_loop")
+
+(def: #export (translate-loop translate offset initsS+ bodyS)
+  (-> (-> ls.Synthesis (Meta //.Expression)) Nat (List ls.Synthesis) ls.Synthesis
+      (Meta //.Expression))
+  (do macro.Monad<Meta>
+    [initsJS+ (monad.map @ translate initsS+)
+     bodyJS (translate bodyS)
+     #let [registersJS+ (|> (list.n/range +0 (n/dec (list.size initsS+)))
+                            (list/map (|>> (n/+ offset) referenceT.variable)))]]
+    (wrap (format "(function " loop-name "(" (text.join-with "," registersJS+) ") {"
+                  "return " bodyJS ";"
+                  "})(" (text.join-with "," initsJS+) ")"))))
+
+(def: #export (translate-iter translate offset argsS+)
+  (-> (-> ls.Synthesis (Meta //.Expression)) Nat (List ls.Synthesis)
+      (Meta //.Expression))
+  (do macro.Monad<Meta>
+    [argsJS+ (monad.map @ translate argsS+)]
+    (wrap (format loop-name "(" (text.join-with "," argsJS+) ")"))))
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