- Initial Lua backend implementation.

1 files changed, 35 insertions, 0 deletions

diff --git a/new-luxc/source/luxc/lang/translation/lua/loop.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/loop.jvm.lux
new file mode 100644
index 000000000..d00f6910d
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/loop.jvm.lux
@@ -0,0 +1,35 @@
+(.module:
+  lux
+  (lux (control [monad #+ do])
+       (data [text]
+             text/format
+             (coll [list "list/" Functor<List>]))
+       [macro])
+  (luxc [lang]
+        (lang ["ls" synthesis]
+              (host [lua #+ Lua Expression Statement])))
+  [//]
+  (// [".T" reference]))
+
+(def: #export (translate-loop translate offset initsS+ bodyS)
+  (-> (-> ls.Synthesis (Meta Expression)) Nat (List ls.Synthesis) ls.Synthesis
+      (Meta Expression))
+  (do macro.Monad<Meta>
+    [loop-name (:: @ map (|>> %code lang.normalize-name)
+                   (macro.gensym "loop"))
+     initsO+ (monad.map @ translate initsS+)
+     bodyO (//.with-anchor [loop-name offset]
+             (translate bodyS))
+     #let [registersO+ (|> (list.n/range +0 (n/dec (list.size initsS+)))
+                           (list/map (|>> (n/+ offset) referenceT.variable)))]
+     _ (//.save (lua.function! loop-name registersO+
+                               (lua.return! bodyO)))]
+    (wrap (lua.apply loop-name initsO+))))
+
+(def: #export (translate-recur translate argsS+)
+  (-> (-> ls.Synthesis (Meta Expression)) (List ls.Synthesis)
+      (Meta Expression))
+  (do macro.Monad<Meta>
+    [[loop-name offset] //.anchor
+     argsO+ (monad.map @ translate argsS+)]
+    (wrap (lua.apply loop-name argsO+))))