- Initial Lua backend implementation.

13 files changed, 1906 insertions, 0 deletions

diff --git a/new-luxc/source/luxc/lang/translation/lua/case.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/case.jvm.lux
new file mode 100644
index 000000000..bce4d7bff
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/case.jvm.lux
@@ -0,0 +1,174 @@
+(.module:
+  lux
+  (lux (control [monad #+ do]
+                ["ex" exception #+ exception:])
+       (data text/format
+             (coll [list "list/" Fold<List>]))
+       [macro #+ "meta/" Monad<Meta>])
+  (luxc [lang]
+        (lang ["ls" synthesis]
+              (host [lua #+ Lua Expression Statement])))
+  [//]
+  (// [".T" runtime]
+      [".T" primitive]
+      [".T" reference]))
+
+(def: (expression-block body)
+  (-> Statement Expression)
+  (lua.apply (lua.function (list)
+               body)
+             (list)))
+
+(def: #export (translate-let translate register valueS bodyS)
+  (-> (-> ls.Synthesis (Meta Expression)) Nat ls.Synthesis ls.Synthesis
+      (Meta Expression))
+  (do macro.Monad<Meta>
+    [valueO (translate valueS)
+     bodyO (translate bodyS)]
+    (wrap (expression-block
+           (lua.block! (list (lua.local! (referenceT.variable register) (#.Some valueO))
+                             (lua.return! bodyO)))))))
+
+(def: #export (translate-record-get translate valueS path)
+  (-> (-> ls.Synthesis (Meta Expression)) ls.Synthesis (List [Nat Bool])
+      (Meta Expression))
+  (do macro.Monad<Meta>
+    [valueO (translate valueS)]
+    (wrap (list/fold (function [[idx tail?] source]
+                       (let [method (if tail?
+                                      runtimeT.product//right
+                                      runtimeT.product//left)]
+                         (method source (lua.int (:! Int idx)))))
+                     valueO
+                     path))))
+
+(def: #export (translate-if testO thenO elseO)
+  (-> Expression Expression Expression Expression)
+  (expression-block
+   (lua.if! testO
+            (lua.return! thenO)
+            (lua.return! elseO))))
+
+(def: savepoint
+  Expression
+  "pm_cursor_savepoint")
+
+(def: cursor
+  Expression
+  "pm_cursor")
+
+(def: (push-cursor! value)
+  (-> Expression Expression)
+  (lua.apply "table.insert" (list cursor value)))
+
+(def: save-cursor!
+  Statement
+  (lua.apply "table.insert" (list savepoint (runtimeT.array//copy cursor))))
+
+(def: restore-cursor!
+  Statement
+  (lua.set! cursor (lua.apply "table.remove" (list savepoint))))
+
+(def: cursor-top
+  Expression
+  (lua.nth (lua.length cursor) cursor))
+
+(def: pop-cursor!
+  Statement
+  (lua.apply "table.remove" (list cursor)))
+
+(def: pm-error
+  Expression
+  (lua.string "PM-ERROR"))
+
+(exception: #export Unrecognized-Path)
+
+(def: (translate-pattern-matching' translate path)
+  (-> (-> ls.Synthesis (Meta Expression)) Code (Meta Expression))
+  (case path
+    (^code ("lux case exec" (~ bodyS)))
+    (do macro.Monad<Meta>
+      [bodyO (translate bodyS)]
+      (wrap (lua.return! bodyO)))
+
+    (^code ("lux case pop"))
+    (meta/wrap pop-cursor!)
+
+    (^code ("lux case bind" (~ [_ (#.Nat register)])))
+    (meta/wrap (lua.local! (referenceT.variable register) (#.Some cursor-top)))
+
+    (^template [<tag> <format>]
+      [_ (<tag> value)]
+      (meta/wrap (lua.when! (lua.not (lua.= (|> value <format>) cursor-top))
+                            (lua.return! pm-error))))
+    ([#.Nat  (<| lua.int (:! Int))]
+     [#.Int  lua.int]
+     [#.Deg  (<| lua.int (:! Int))]
+     [#.Bool lua.bool]
+     [#.Frac lua.float]
+     [#.Text lua.string])
+
+    (^template [<pm> <getter>]
+      (^code (<pm> (~ [_ (#.Nat idx)])))
+      (meta/wrap (push-cursor! (<getter> cursor-top (lua.int (:! Int idx))))))
+    (["lux case tuple left" runtimeT.product//left]
+     ["lux case tuple right" runtimeT.product//right])
+
+    (^template [<pm> <flag>]
+      (^code (<pm> (~ [_ (#.Nat idx)])))
+      (meta/wrap (lua.block! (list (lua.set! "temp" (runtimeT.sum//get cursor-top (lua.int (:! Int idx)) <flag>))
+                                   (lua.if! (lua.not (lua.= lua.nil "temp"))
+                                            (push-cursor! "temp")
+                                            (lua.return! pm-error))))))
+    (["lux case variant left" lua.nil]
+     ["lux case variant right" (lua.string "")])
+
+    (^code ("lux case seq" (~ leftP) (~ rightP)))
+    (do macro.Monad<Meta>
+      [leftO (translate-pattern-matching' translate leftP)
+       rightO (translate-pattern-matching' translate rightP)]
+      (wrap (lua.block! (list leftO rightO))))
+
+    (^code ("lux case alt" (~ leftP) (~ rightP)))
+    (do macro.Monad<Meta>
+      [leftO (translate-pattern-matching' translate leftP)
+       rightO (translate-pattern-matching' translate rightP)]
+      (wrap (lua.block! (list (format "local alt_success, alt_value = " (lua.apply "pcall" (list (lua.function (list)
+                                                                                                   (lua.block! (list save-cursor!
+                                                                                                                     leftO))))) ";")
+                              (lua.if! "alt_success"
+                                       (lua.return! "alt_value")
+                                       (lua.if! (lua.= pm-error "alt_value")
+                                                (lua.block! (list restore-cursor!
+                                                                  rightO))
+                                                (lua.error "alt_value")))))))
+
+    _
+    (lang.throw Unrecognized-Path (%code path))
+    ))
+
+(def: (translate-pattern-matching translate path)
+  (-> (-> ls.Synthesis (Meta Expression)) Code (Meta Expression))
+  (do macro.Monad<Meta>
+    [pattern-matching (translate-pattern-matching' translate path)]
+    (wrap (lua.block! (list (format "local success, value = pcall(function () " pattern-matching " end);")
+                            (lua.if! "success"
+                                     (lua.return! "value")
+                                     (lua.if! (lua.= pm-error "value")
+                                              (lua.error (lua.string "Invalid expression for pattern-matching."))
+                                              (lua.error "value"))))))))
+
+(def: (initialize-pattern-matching stack-init)
+  (-> Expression Statement)
+  (lua.block! (list (lua.local! "temp" #.None)
+                    (lua.local! cursor (#.Some (lua.array (list stack-init))))
+                    (lua.local! savepoint (#.Some (lua.array (list)))))))
+
+(def: #export (translate-case translate valueS path)
+  (-> (-> ls.Synthesis (Meta Expression)) ls.Synthesis Code (Meta Expression))
+  (do macro.Monad<Meta>
+    [valueO (translate valueS)
+     pattern-matching (translate-pattern-matching translate path)]
+    (wrap (expression-block
+           (lua.block! (list (initialize-pattern-matching valueO)
+                             pattern-matching))))))
diff --git a/new-luxc/source/luxc/lang/translation/lua/eval.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/eval.jvm.lux
new file mode 100644
index 000000000..331ec857d
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/eval.jvm.lux
@@ -0,0 +1,121 @@
+(.module:
+  lux
+  (lux (control ["ex" exception #+ exception:])
+       (data [bit]
+             [maybe]
+             ["e" error #+ Error]
+             text/format
+             (coll [array]))
+       [host])
+  (luxc [lang]
+        (lang (host [js #+ JS Expression Statement])))
+  [//])
+
+(host.import java/lang/Object
+  (toString [] String)
+  (getClass [] (Class Object)))
+
+(host.import java/lang/Long
+  (intValue [] Integer))
+
+(host.import net/sandius/rembulan/ByteString
+  (decode [] String))
+
+(host.import net/sandius/rembulan/Table
+  (rawget #as get-idx [long] #? Object)
+  (rawget #as get-key [Object] #? Object)
+  (rawlen [] long))
+
+(host.import net/sandius/rembulan/impl/DefaultTable)
+
+(def: (variant lux-object host-object)
+  (-> (-> Object (Error Top)) DefaultTable (Maybe Top))
+  (case [(Table::get-key [//.variant-tag-field] host-object)
+         (Table::get-key [//.variant-flag-field] host-object)
+         (Table::get-key [//.variant-value-field] host-object)]
+    (^multi [(#.Some tag) ?flag (#.Some value)]
+            [(lux-object value)
+             (#.Some value)])
+    (#.Some [(Long::intValue [] (:! Long tag))
+             (: Top (case ?flag (#.Some _) "" #.None (host.null)))
+             value])
+
+    _
+    #.None))
+
+(def: (array lux-object host-object)
+  (-> (-> Object (Error Top)) DefaultTable (Maybe (Array Object)))
+  (let [init-num-keys (:! Nat (Table::rawlen [] host-object))]
+    (loop [num-keys init-num-keys
+           idx +0
+           output (: (Array Object)
+                     (array.new init-num-keys))]
+      (if (n/< num-keys idx)
+        (case (Table::get-idx (:! Long (n/inc idx)) host-object)
+          (#.Some member)
+          (case (lux-object member)
+            (#e.Success parsed-member)
+            (recur num-keys (n/inc idx) (array.write idx (:! Object parsed-member) output))
+
+            (#e.Error error)
+            #.None)
+
+          #.None
+          (recur num-keys (n/inc idx) output))
+        (#.Some output)))))
+
+(exception: #export Unknown-Kind-Of-Host-Object)
+(exception: #export Null-Has-No-Lux-Representation)
+
+(def: (lux-object host-object)
+  (-> Object (Error Top))
+  (`` (cond (host.null? host-object)
+            (ex.throw Null-Has-No-Lux-Representation "")
+
+            (or (host.instance? java/lang/Boolean host-object)
+                (host.instance? java/lang/Long host-object)
+                (host.instance? java/lang/Double host-object)
+                (host.instance? java/lang/String host-object))
+            (ex.return host-object)
+
+            (host.instance? ByteString host-object)
+            (ex.return (ByteString::decode [] (:! ByteString host-object)))
+
+            (host.instance? DefaultTable host-object)
+            (let [host-object (:! DefaultTable host-object)]
+              (case (variant lux-object host-object)
+                (#.Some value)
+                (ex.return value)
+
+                #.None
+                (case (array lux-object host-object)
+                  (#.Some value)
+                  (ex.return value)
+
+                  #.None
+                  (ex.throw Unknown-Kind-Of-Host-Object (format "SECOND " (Object::toString [] (:! Object host-object)))))))
+
+            ## else
+            (ex.throw Unknown-Kind-Of-Host-Object (format "FIRST " (Object::toString [] (:! Object host-object))))
+            )))
+
+(exception: #export Cannot-Evaluate)
+
+(def: #export (eval code)
+  (-> Expression (Meta Top))
+  (function [compiler]
+    (let [interpreter (|> compiler (get@ #.host) (:! //.Host) (get@ #//.interpreter))]
+      (case (interpreter (format "return " code ";"))
+        (#e.Error error)
+        ((lang.throw Cannot-Evaluate error) compiler)
+
+        (#e.Success output)
+        (case (lux-object (|> output
+                              (:! (Array Object))
+                              (array.read +0)
+                              maybe.assume))
+          (#e.Success parsed-output)
+          (#e.Success [compiler parsed-output])
+
+          (#e.Error error)
+          ((lang.throw Cannot-Evaluate error) compiler))))))
diff --git a/new-luxc/source/luxc/lang/translation/lua/expression.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/expression.jvm.lux
new file mode 100644
index 000000000..d3d336420
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/expression.jvm.lux
@@ -0,0 +1,83 @@
+(.module:
+  lux
+  (lux (control [monad #+ do]
+                ["ex" exception #+ exception:]
+                ["p" parser])
+       (data ["e" error]
+             text/format)
+       [macro]
+       (macro ["s" syntax]))
+  (luxc ["&" lang]
+        (lang [".L" variable #+ Variable Register]
+              [".L" extension]
+              ["ls" synthesis]
+              (host [lua #+ Lua Expression Statement])))
+  [//]
+  (// [".T" runtime]
+      [".T" primitive]
+      [".T" structure]
+      [".T" reference]
+      [".T" function]
+      [".T" loop]
+      [".T" case]
+      [".T" procedure]))
+
+(exception: #export Invalid-Function-Syntax)
+(exception: #export Unrecognized-Synthesis)
+
+(def: #export (translate synthesis)
+  (-> ls.Synthesis (Meta Expression))
+  (case synthesis
+    (^code [])
+    (:: macro.Monad<Meta> wrap runtimeT.unit)
+
+    (^code [(~ singleton)])
+    (translate singleton)
+
+    (^template [<tag> <generator>]
+      [_ (<tag> value)]
+      (<generator> value))
+    ([#.Bool primitiveT.translate-bool]
+     [#.Nat  primitiveT.translate-nat]
+     [#.Int  primitiveT.translate-int]
+     [#.Deg  primitiveT.translate-deg]
+     [#.Frac primitiveT.translate-frac]
+     [#.Text primitiveT.translate-text])
+
+    (^code ((~ [_ (#.Nat tag)]) (~ [_ (#.Bool last?)]) (~ valueS)))
+    (structureT.translate-variant translate tag last? valueS)
+
+    (^code [(~+ members)])
+    (structureT.translate-tuple translate members)
+
+    (^ [_ (#.Form (list [_ (#.Int var)]))])
+    (referenceT.translate-variable var)
+
+    [_ (#.Symbol definition)]
+    (referenceT.translate-definition definition)
+
+    (^code ("lux let" (~ [_ (#.Nat register)]) (~ inputS) (~ exprS)))
+    (caseT.translate-let translate register inputS exprS)
+
+    (^code ("lux case" (~ inputS) (~ pathPS)))
+    (caseT.translate-case translate inputS pathPS)
+
+    (^code ("lux function" (~ [_ (#.Nat arity)]) [(~+ environment)] (~ bodyS)))
+    (case (s.run environment (p.some s.int))
+      (#e.Success environment)
+      (functionT.translate-function translate environment arity bodyS)
+
+      _
+      (&.throw Invalid-Function-Syntax (%code synthesis)))
+
+    (^code ("lux call" (~ functionS) (~+ argsS)))
+    (functionT.translate-apply translate functionS argsS)
+
+    (^code ((~ [_ (#.Text procedure)]) (~+ argsS)))
+    (procedureT.translate-procedure translate procedure argsS)
+    ## (do macro.Monad<Meta>
+    ##   [translation (extensionL.find-translation procedure)]
+    ##   (translation argsS))
+
+    _
+    (&.throw Unrecognized-Synthesis (%code synthesis))))
diff --git a/new-luxc/source/luxc/lang/translation/lua/function.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/function.jvm.lux
new file mode 100644
index 000000000..1750cd3eb
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/function.jvm.lux
@@ -0,0 +1,82 @@
+(.module:
+  lux
+  (lux (control [monad #+ do])
+       (data [product]
+             [text]
+             text/format
+             (coll [list "list/" Functor<List>]))
+       [macro])
+  (luxc ["&" lang]
+        (lang ["ls" synthesis]
+              [".L" variable #+ Variable]
+              (host [lua #+ Lua Expression Statement])))
+  [//]
+  (// [".T" reference]
+      [".T" loop]
+      [".T" runtime]))
+
+(def: #export (translate-apply translate functionS argsS+)
+  (-> (-> ls.Synthesis (Meta Expression)) ls.Synthesis (List ls.Synthesis) (Meta Expression))
+  (do macro.Monad<Meta>
+    [functionO (translate functionS)
+     argsO+ (monad.map @ translate argsS+)]
+    (wrap (lua.apply functionO argsO+))))
+
+(def: (input-declaration register)
+  (lua.local! (referenceT.variable (n/inc register))
+              (#.Some (lua.nth (|> register n/inc nat-to-int %i) "curried"))))
+
+(def: (with-closure function-name inits function-definition)
+  (-> Text (List Expression) Statement (Meta Expression))
+  (let [closure-name (format function-name "___CLOSURE")]
+    (case inits
+      #.Nil
+      (do macro.Monad<Meta>
+        [_ (//.save function-definition)]
+        (wrap function-name))
+
+      _
+      (do macro.Monad<Meta>
+        [_ (//.save (lua.function! closure-name
+                                   (|> (list.enumerate inits)
+                                       (list/map (|>> product.left referenceT.closure)))
+                                   (lua.block! (list function-definition
+                                                     (lua.return! function-name)))))]
+        (wrap (lua.apply closure-name inits))))))
+
+(def: #export (translate-function translate env arity bodyS)
+  (-> (-> ls.Synthesis (Meta Expression))
+      (List Variable) ls.Arity ls.Synthesis
+      (Meta Expression))
+  (do macro.Monad<Meta>
+    [[function-name bodyO] (//.with-sub-context
+                             (do @
+                               [function-name //.context]
+                               (//.with-anchor [function-name +1]
+                                 (translate bodyS))))
+     closureO+ (monad.map @ referenceT.translate-variable env)
+     #let [args-initsO+ (|> (list.n/range +0 (n/dec arity))
+                            (list/map input-declaration))
+           selfO (lua.local! (referenceT.variable +0) (#.Some function-name))
+           arityO (|> arity nat-to-int %i)
+           pack (|>> (list) (lua.apply "table.pack"))]]
+    (with-closure function-name closureO+
+      (lua.function! function-name (list "...")
+                     (lua.block! (list (lua.local! "curried" (#.Some (pack "...")))
+                                       (lua.local! "num_args" (#.Some (lua.length "curried")))
+                                       (lua.if! (lua.= arityO "num_args")
+                                                (lua.block! (list selfO
+                                                                  (lua.block! args-initsO+)
+                                                                  (lua.while! (lua.bool true)
+                                                                              (lua.return! bodyO))))
+                                                (let [unpack (|>> (list) (lua.apply "table.unpack"))
+                                                      recur (|>> (list) (lua.apply function-name))]
+                                                  (lua.if! (lua.> arityO "num_args")
+                                                           (let [slice (function [from to]
+                                                                         (runtimeT.array//sub "curried" from to))
+                                                                 arity-args (unpack (slice (lua.int 1) arityO))
+                                                                 output-func-args (unpack (slice (lua.+ (lua.int 1) arityO) "num_args"))]
+                                                             (lua.return! (lua.apply (recur arity-args)
+                                                                                     (list output-func-args))))
+                                                           (lua.return! (lua.function (list "...")
+                                                                          (lua.return! (recur (unpack (runtimeT.array//concat "curried" (pack "..."))))))))))))))))
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+))))
diff --git a/new-luxc/source/luxc/lang/translation/lua/primitive.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/primitive.jvm.lux
new file mode 100644
index 000000000..c322e5005
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/primitive.jvm.lux
@@ -0,0 +1,42 @@
+(.module:
+  lux
+  (lux (control pipe)
+       (data [number]
+             text/format)
+       [macro "meta/" Monad<Meta>])
+  (luxc (lang (host [lua #+ Lua Expression Statement]))))
+
+(def: #export translate-bool
+  (-> Bool (Meta Expression))
+  (|>> %b meta/wrap))
+
+(def: #export translate-int
+  (-> Int (Meta Expression))
+  (|>> %i meta/wrap))
+
+(def: #export translate-nat
+  (-> Nat (Meta Expression))
+  (|>> (:! Int) %i meta/wrap))
+
+(def: #export translate-deg
+  (-> Deg (Meta Expression))
+  (|>> (:! Int) %i meta/wrap))
+
+(def: #export translate-frac
+  (-> Frac (Meta Expression))
+  (|>> (cond> [(f/= number.positive-infinity)]
+              [(new> "math.huge")]
+              
+              [(f/= number.negative-infinity)]
+              [(new> "(-1 * math.huge)")]
+              
+              [(f/= number.not-a-number)]
+              [(new> "(0/0)")]
+              
+              ## else
+              [%f])
+       meta/wrap))
+
+(def: #export translate-text
+  (-> Text (Meta Expression))
+  (|>> %t meta/wrap))
diff --git a/new-luxc/source/luxc/lang/translation/lua/procedure.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/procedure.jvm.lux
new file mode 100644
index 000000000..e25050ede
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/procedure.jvm.lux
@@ -0,0 +1,28 @@
+(.module:
+  lux
+  (lux (control [monad #+ do]
+                ["ex" exception #+ exception:])
+       (data [maybe]
+             text/format
+             (coll [dict])))
+  (luxc ["&" lang]
+        (lang ["ls" synthesis]
+              (host [lua #+ Lua Expression Statement])))
+  [//]
+  (/ ["/." common]
+     ["/." host]))
+
+(exception: #export Unknown-Procedure)
+
+(def: procedures
+  /common.Bundle
+  (|> /common.procedures
+      (dict.merge /host.procedures)))
+
+(def: #export (translate-procedure translate name args)
+  (-> (-> ls.Synthesis (Meta Expression)) Text (List ls.Synthesis)
+      (Meta Expression))
+  (<| (maybe.default (&.throw Unknown-Procedure (%t name)))
+      (do maybe.Monad<Maybe>
+        [proc (dict.get name procedures)]
+        (wrap (proc translate args)))))
diff --git a/new-luxc/source/luxc/lang/translation/lua/procedure/common.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/procedure/common.jvm.lux
new file mode 100644
index 000000000..2b277dec4
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/procedure/common.jvm.lux
@@ -0,0 +1,640 @@
+(.module:
+  lux
+  (lux (control [monad #+ do]
+                ["ex" exception #+ exception:]
+                ["p" parser])
+       (data ["e" error]
+             [text]
+             text/format
+             (coll [list "list/" Functor<List>]
+                   [dict #+ Dict]))
+       [macro #+ with-gensyms]
+       (macro [code]
+              ["s" syntax #+ syntax:])
+       [host])
+  (luxc ["&" lang]
+        (lang ["la" analysis]
+              ["ls" synthesis]
+              (host [lua #+ Lua Expression Statement])))
+  [///]
+  (/// [".T" runtime]
+       [".T" case]
+       [".T" function]
+       [".T" loop]))
+
+## [Types]
+(type: #export Translator
+  (-> ls.Synthesis (Meta Expression)))
+
+(type: #export Proc
+  (-> Translator (List ls.Synthesis) (Meta Expression)))
+
+(type: #export Bundle
+  (Dict Text Proc))
+
+(syntax: (Vector [size s.nat] elemT)
+  (wrap (list (` [(~+ (list.repeat size elemT))]))))
+
+(type: #export Nullary (-> (Vector +0 Expression) Expression))
+(type: #export Unary   (-> (Vector +1 Expression) Expression))
+(type: #export Binary  (-> (Vector +2 Expression) Expression))
+(type: #export Trinary (-> (Vector +3 Expression) Expression))
+(type: #export Variadic (-> (List Expression) Expression))
+
+## [Utils]
+(def: #export (install name unnamed)
+  (-> Text (-> Text Proc)
+      (-> Bundle Bundle))
+  (dict.put name (unnamed name)))
+
+(def: #export (prefix prefix bundle)
+  (-> Text Bundle Bundle)
+  (|> bundle
+      dict.entries
+      (list/map (function [[key val]] [(format prefix " " key) val]))
+      (dict.from-list text.Hash<Text>)))
+
+(def: (wrong-arity proc expected actual)
+  (-> Text Nat Nat Text)
+  (format "Wrong number of arguments for " (%t proc) "\n"
+          "Expected: " (|> expected nat-to-int %i) "\n"
+          "  Actual: " (|> actual nat-to-int %i)))
+
+(syntax: (arity: [name s.local-symbol] [arity s.nat])
+  (with-gensyms [g!proc g!name g!translate g!inputs]
+    (do @
+      [g!input+ (monad.seq @ (list.repeat arity (macro.gensym "input")))]
+      (wrap (list (` (def: #export ((~ (code.local-symbol name)) (~ g!proc))
+                       (-> (-> (..Vector (~ (code.nat arity)) Expression) Expression)
+                           (-> Text ..Proc))
+                       (function [(~ g!name)]
+                         (function [(~ g!translate) (~ g!inputs)]
+                           (case (~ g!inputs)
+                             (^ (list (~+ g!input+)))
+                             (do macro.Monad<Meta>
+                               [(~+ (|> g!input+
+                                        (list/map (function [g!input]
+                                                    (list g!input (` ((~ g!translate) (~ g!input))))))
+                                        list.concat))]
+                               ((~' wrap) ((~ g!proc) [(~+ g!input+)])))
+
+                             (~' _)
+                             (macro.fail (wrong-arity (~ g!name) +1 (list.size (~ g!inputs))))))))))))))
+
+(arity: nullary +0)
+(arity: unary +1)
+(arity: binary +2)
+(arity: trinary +3)
+
+(def: #export (variadic proc)
+  (-> Variadic (-> Text Proc))
+  (function [proc-name]
+    (function [translate inputsS]
+      (do macro.Monad<Meta>
+        [inputsI (monad.map @ translate inputsS)]
+        (wrap (proc inputsI))))))
+
+## [Procedures]
+## [[Lux]]
+(def: (lux//is [leftO rightO])
+  Binary
+  (lua.= leftO rightO))
+
+(def: (lux//if [testO thenO elseO])
+  Trinary
+  (caseT.translate-if testO thenO elseO))
+
+(def: (lux//try riskyO)
+  Unary
+  (runtimeT.lux//try riskyO))
+
+(def: (lux//noop valueO)
+  Unary
+  valueO)
+
+(exception: #export Wrong-Syntax)
+(def: #export (wrong-syntax procedure args)
+  (-> Text (List ls.Synthesis) Text)
+  (format "Procedure: " procedure "\n"
+          "Arguments: " (%code (code.tuple args))))
+
+(def: lux//loop
+  (-> Text Proc)
+  (function [proc-name]
+    (function [translate inputsS]
+      (case (s.run inputsS ($_ p.seq s.nat (s.tuple (p.many s.any)) s.any))
+        (#e.Success [offset initsS+ bodyS])
+        (loopT.translate-loop translate offset initsS+ bodyS)
+
+        (#e.Error error)
+        (&.throw Wrong-Syntax (wrong-syntax proc-name inputsS)))
+      )))
+
+(def: lux//recur
+  (-> Text Proc)
+  (function [proc-name]
+    (function [translate inputsS]
+      (loopT.translate-recur translate inputsS))))
+
+## [[Bits]]
+(do-template [<name> <op>]
+  [(def: (<name> [subjectO paramO])
+     Binary
+     (<op> paramO subjectO))]
+
+  [bit//and lua.bit-and]
+  [bit//or  lua.bit-or]
+  [bit//xor lua.bit-xor]
+  )
+
+(do-template [<name> <op>]
+  [(def: (<name> [subjectO paramO])
+     Binary
+     (<op> paramO subjectO))]
+
+  [bit//shift-left           lua.bit-shl]
+  [bit//shift-right          lua.bit-shr]
+  [bit//unsigned-shift-right runtimeT.bit//shift-right]
+  )
+
+(def: bit//count
+  Unary
+  runtimeT.bit//count)
+
+## [[Arrays]]
+(def: (array//new sizeO)
+  Unary
+  (runtimeT.array//new sizeO))
+
+(def: (array//get [arrayO idxO])
+  Binary
+  (runtimeT.array//get arrayO idxO))
+
+(def: (array//put [arrayO idxO elemO])
+  Trinary
+  (runtimeT.array//put arrayO idxO elemO))
+
+(def: (array//remove [arrayO idxO])
+  Binary
+  (runtimeT.array//remove arrayO idxO))
+
+(def: array//size
+  Unary
+  lua.length)
+
+## [[Numbers]]
+(host.import java/lang/Double
+  (#static MIN_VALUE Double)
+  (#static MAX_VALUE Double)
+  (#static NaN Double)
+  (#static POSITIVE_INFINITY Double)
+  (#static NEGATIVE_INFINITY Double))
+
+(do-template [<name> <const> <encode>]
+  [(def: (<name> _)
+     Nullary
+     (<encode> <const>))]
+
+  [nat//min                 0                           lua.int]
+  [nat//max                -1                           lua.int]
+
+  [frac//smallest          Double::MIN_VALUE            lua.float]
+  [frac//min               (f/* -1.0 Double::MAX_VALUE) lua.float]
+  [frac//max               Double::MAX_VALUE            lua.float]
+  
+  [deg//min                 0                           lua.int]
+  [deg//max                -1                           lua.int]
+  )
+
+(do-template [<name> <expression>]
+  [(def: (<name> _)
+     Nullary
+     <expression>)]
+
+  [int//min "math.mininteger"]
+  [int//max "math.maxinteger"]
+  )
+
+(do-template [<name> <expression>]
+  [(def: (<name> _)
+     Nullary
+     <expression>)]
+
+  [frac//not-a-number      (lua./ (lua.int 0) (lua.int 0))]
+  [frac//positive-infinity "math.huge"]
+  [frac//negative-infinity (lua.* (lua.int -1) "math.huge")]
+  )
+
+(do-template [<name> <op>]
+  [(def: (<name> [subjectO paramO])
+     Binary
+     (<op> paramO subjectO))]
+
+  [int//add        lua.+]
+  [int//sub        lua.-]
+  [int//mul        lua.*]
+  [int//div        lua.//]
+  [int//rem        lua.%]
+  
+  [nat//add        lua.+]
+  [nat//sub        lua.-]
+  [nat//mul        lua.*]
+  [nat//div        runtimeT.nat///]
+  [nat//rem        runtimeT.nat//%]
+
+  [deg//add        lua.+]
+  [deg//sub        lua.-]
+  [deg//mul        runtimeT.deg//*]
+  [deg//div        runtimeT.deg///]
+  [deg//rem        lua.-]
+  [deg//scale      lua.*]
+  [deg//reciprocal lua.//]
+  )
+
+(do-template [<name> <op>]
+  [(def: (<name> [subjectO paramO])
+     Binary
+     (<op> paramO subjectO))]
+
+  [frac//add lua.+]
+  [frac//sub lua.-]
+  [frac//mul lua.*]
+  [frac//div lua./]
+  [frac//rem lua.%]
+  [frac//=   lua.=]
+  [frac//<   lua.<]
+
+  [text//=   lua.=]
+  [text//<   lua.<]
+  )
+
+(do-template [<name> <cmp>]
+  [(def: (<name> [subjectO paramO])
+     Binary
+     (<cmp> paramO subjectO))]
+
+  [nat//= lua.=]
+  [nat//< runtimeT.nat//<]
+  [int//= lua.=]
+  [int//< lua.<]
+  [deg//= lua.=]
+  [deg//< runtimeT.nat//<]
+  )
+
+(do-template [<name>]
+  [(def: (<name> inputO)
+     Unary
+     inputO)]
+
+  [nat//to-int]
+  [int//to-nat]
+  )
+
+(def: frac//encode
+  Unary
+  (|>> (list) (lua.apply "tostring")))
+
+(def: (frac//decode inputO)
+  Unary
+  (lux//try (lua.function (list)
+              (lua.return! (lua.apply "tonumber" (list inputO))))))
+
+(do-template [<name> <divisor>]
+  [(def: (<name> inputO)
+     Unary
+     (lua./ <divisor> inputO))]
+
+  [int//to-frac (lua.float 1.0)]
+  [deg//to-frac (lua.bit-shl (lua.int 32) (lua.int 1))]
+  )
+
+(do-template [<name> <transform>]
+  [(def: (<name> inputO)
+     Unary
+     (|> inputO <transform>))]
+
+  [frac//to-int (<| (lua.apply "math.floor") (list))]
+  [frac//to-deg runtimeT.deg//from-frac]
+  [text//hash   runtimeT.text//hash]
+  )
+
+(def: nat//char
+  Unary
+  (|>> (list) (lua.apply "string.char")))
+
+## [[Text]]
+(do-template [<name> <op>]
+  [(def: <name>
+     Unary
+     (|>> (list) (lua.apply <op>)))]
+
+  [text//size  "string.len"]
+  [text//upper "string.upper"]
+  [text//lower "string.lower"]
+  )
+
+(def: (text//trim inputO)
+  Unary
+  (lua.apply "string.match" (list inputO "^%s*(.-)%s*$")))
+
+(def: (text//concat [subjectO paramO])
+  Binary
+  (format "(" subjectO " .. " paramO ")"))
+
+(def: (text//contains? [subjectO paramO])
+  Binary
+  (|> (lua.apply "string.find" (list subjectO paramO (lua.int 1) (lua.bool true)))
+      (lua.= lua.nil)
+      lua.not))
+
+(def: (text//char [subjectO paramO])
+  Binary
+  (runtimeT.text//char subjectO paramO))
+
+(do-template [<name> <runtime>]
+  [(def: (<name> [subjectO paramO extraO])
+     Trinary
+     (<runtime> subjectO paramO extraO))]
+
+  [text//clip        runtimeT.text//clip]
+  [text//replace-all runtimeT.text//replace-all]
+  [text//replace-once runtimeT.text//replace-once]
+  )
+
+(def: (text//index [textO partO startO])
+  Trinary
+  (runtimeT.text//index textO partO startO))
+
+## [[Math]]
+(do-template [<name> <method>]
+  [(def: (<name> inputO)
+     Unary
+     (lua.apply <method> (list inputO)))]
+
+  [math//cos "math.cos"]
+  [math//sin "math.sin"]
+  [math//tan "math.tan"]
+  [math//acos "math.acos"]
+  [math//asin "math.asin"]
+  [math//atan "math.atan"]
+  [math//exp "math.exp"]
+  [math//log "math.log"]
+  [math//ceil "math.ceil"]
+  [math//floor "math.floor"]
+  )
+
+(def: (math//pow [inputO paramO])
+  Binary
+  (lua.apply "math.pow" (list inputO paramO)))
+
+## [[IO]]
+(def: (io//log messageO)
+  Unary
+  (lua.or (lua.apply "print" (list messageO))
+          runtimeT.unit))
+
+(def: io//error
+  Unary
+  lua.error)
+
+(def: io//exit
+  Unary
+  (|>> (list) (lua.apply "os.exit")))
+
+(def: (io//current-time [])
+  Nullary
+  (|> (lua.apply "os.time" (list))
+      (lua.* (lua.int 1_000))))
+
+## [[Atoms]]
+(def: atom//new
+  Unary
+  (|>> [runtimeT.atom//field] (list) lua.table))
+
+(def: atom//read
+  Unary
+  (lua.nth (lua.string runtimeT.atom//field)))
+
+(def: (atom//compare-and-swap [atomO oldO newO])
+  Trinary
+  (runtimeT.atom//compare-and-swap atomO oldO newO))
+
+## [[Box]]
+(def: box//new
+  Unary
+  (|>> (list) lua.array))
+
+(def: box//read
+  Unary
+  (lua.nth (lua.int 1)))
+
+(def: (box//write [valueO boxO])
+  Binary
+  (runtimeT.box//write valueO boxO))
+
+## [[Processes]]
+(def: (process//concurrency-level [])
+  Nullary
+  (lua.int 1))
+
+(def: process//future
+  Unary
+  runtimeT.process//future)
+
+(def: (process//schedule [milli-secondsO procedureO])
+  Binary
+  (runtimeT.process//schedule milli-secondsO procedureO))
+
+## [Bundles]
+(def: lux-procs
+  Bundle
+  (|> (dict.new text.Hash<Text>)
+      (install "noop" (unary lux//noop))
+      (install "is" (binary lux//is))
+      (install "try" (unary lux//try))
+      (install "if" (trinary lux//if))
+      (install "loop" lux//loop)
+      (install "recur" lux//recur)
+      ))
+
+(def: bit-procs
+  Bundle
+  (<| (prefix "bit")
+      (|> (dict.new text.Hash<Text>)
+          (install "count" (unary bit//count))
+          (install "and" (binary bit//and))
+          (install "or" (binary bit//or))
+          (install "xor" (binary bit//xor))
+          (install "shift-left" (binary bit//shift-left))
+          (install "unsigned-shift-right" (binary bit//unsigned-shift-right))
+          (install "shift-right" (binary bit//shift-right))
+          )))
+
+(def: nat-procs
+  Bundle
+  (<| (prefix "nat")
+      (|> (dict.new text.Hash<Text>)
+          (install "+" (binary nat//add))
+          (install "-" (binary nat//sub))
+          (install "*" (binary nat//mul))
+          (install "/" (binary nat//div))
+          (install "%" (binary nat//rem))
+          (install "=" (binary nat//=))
+          (install "<" (binary nat//<))
+          (install "min" (nullary nat//min))
+          (install "max" (nullary nat//max))
+          (install "to-int" (unary nat//to-int))
+          (install "char" (unary nat//char)))))
+
+(def: int-procs
+  Bundle
+  (<| (prefix "int")
+      (|> (dict.new text.Hash<Text>)
+          (install "+" (binary int//add))
+          (install "-" (binary int//sub))
+          (install "*" (binary int//mul))
+          (install "/" (binary int//div))
+          (install "%" (binary int//rem))
+          (install "=" (binary int//=))
+          (install "<" (binary int//<))
+          (install "min" (nullary int//min))
+          (install "max" (nullary int//max))
+          (install "to-nat" (unary int//to-nat))
+          (install "to-frac" (unary int//to-frac)))))
+
+(def: deg-procs
+  Bundle
+  (<| (prefix "deg")
+      (|> (dict.new text.Hash<Text>)
+          (install "+" (binary deg//add))
+          (install "-" (binary deg//sub))
+          (install "*" (binary deg//mul))
+          (install "/" (binary deg//div))
+          (install "%" (binary deg//rem))
+          (install "=" (binary deg//=))
+          (install "<" (binary deg//<))
+          (install "scale" (binary deg//scale))
+          (install "reciprocal" (binary deg//reciprocal))
+          (install "min" (nullary deg//min))
+          (install "max" (nullary deg//max))
+          (install "to-frac" (unary deg//to-frac)))))
+
+(def: frac-procs
+  Bundle
+  (<| (prefix "frac")
+      (|> (dict.new text.Hash<Text>)
+          (install "+" (binary frac//add))
+          (install "-" (binary frac//sub))
+          (install "*" (binary frac//mul))
+          (install "/" (binary frac//div))
+          (install "%" (binary frac//rem))
+          (install "=" (binary frac//=))
+          (install "<" (binary frac//<))
+          (install "smallest" (nullary frac//smallest))
+          (install "min" (nullary frac//min))
+          (install "max" (nullary frac//max))
+          (install "not-a-number" (nullary frac//not-a-number))
+          (install "positive-infinity" (nullary frac//positive-infinity))
+          (install "negative-infinity" (nullary frac//negative-infinity))
+          (install "to-deg" (unary frac//to-deg))
+          (install "to-int" (unary frac//to-int))
+          (install "encode" (unary frac//encode))
+          (install "decode" (unary frac//decode)))))
+
+(def: text-procs
+  Bundle
+  (<| (prefix "text")
+      (|> (dict.new text.Hash<Text>)
+          (install "=" (binary text//=))
+          (install "<" (binary text//<))
+          (install "concat" (binary text//concat))
+          (install "index" (trinary text//index))
+          (install "size" (unary text//size))
+          (install "hash" (unary text//hash))
+          (install "replace-once" (trinary text//replace-once))
+          (install "replace-all" (trinary text//replace-all))
+          (install "char" (binary text//char))
+          (install "clip" (trinary text//clip))
+          (install "upper" (unary text//upper))
+          (install "lower" (unary text//lower))
+          )))
+
+(def: array-procs
+  Bundle
+  (<| (prefix "array")
+      (|> (dict.new text.Hash<Text>)
+          (install "new" (unary array//new))
+          (install "get" (binary array//get))
+          (install "put" (trinary array//put))
+          (install "remove" (binary array//remove))
+          (install "size" (unary array//size))
+          )))
+
+(def: math-procs
+  Bundle
+  (<| (prefix "math")
+      (|> (dict.new text.Hash<Text>)
+          (install "cos" (unary math//cos))
+          (install "sin" (unary math//sin))
+          (install "tan" (unary math//tan))
+          (install "acos" (unary math//acos))
+          (install "asin" (unary math//asin))
+          (install "atan" (unary math//atan))
+          (install "exp" (unary math//exp))
+          (install "log" (unary math//log))
+          (install "ceil" (unary math//ceil))
+          (install "floor" (unary math//floor))
+          (install "pow" (binary math//pow))
+          )))
+
+(def: io-procs
+  Bundle
+  (<| (prefix "io")
+      (|> (dict.new text.Hash<Text>)
+          (install "log" (unary io//log))
+          (install "error" (unary io//error))
+          (install "exit" (unary io//exit))
+          (install "current-time" (nullary io//current-time)))))
+
+(def: atom-procs
+  Bundle
+  (<| (prefix "atom")
+      (|> (dict.new text.Hash<Text>)
+          (install "new" (unary atom//new))
+          (install "read" (unary atom//read))
+          (install "compare-and-swap" (trinary atom//compare-and-swap)))))
+
+(def: box-procs
+  Bundle
+  (<| (prefix "box")
+      (|> (dict.new text.Hash<Text>)
+          (install "new" (unary box//new))
+          (install "read" (unary box//read))
+          (install "write" (binary box//write)))))
+
+(def: process-procs
+  Bundle
+  (<| (prefix "process")
+      (|> (dict.new text.Hash<Text>)
+          (install "concurrency-level" (nullary process//concurrency-level))
+          (install "future" (unary process//future))
+          (install "schedule" (binary process//schedule))
+          )))
+
+(def: #export procedures
+  Bundle
+  (<| (prefix "lux")
+      (|> lux-procs
+          (dict.merge bit-procs)
+          (dict.merge nat-procs)
+          (dict.merge int-procs)
+          (dict.merge deg-procs)
+          (dict.merge frac-procs)
+          (dict.merge text-procs)
+          (dict.merge array-procs)
+          (dict.merge math-procs)
+          (dict.merge io-procs)
+          (dict.merge atom-procs)
+          (dict.merge box-procs)
+          (dict.merge process-procs)
+          )))
diff --git a/new-luxc/source/luxc/lang/translation/lua/procedure/host.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/procedure/host.jvm.lux
new file mode 100644
index 000000000..85af96ec9
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/procedure/host.jvm.lux
@@ -0,0 +1,87 @@
+(.module:
+  lux
+  (lux (control [monad #+ do])
+       (data [text]
+             text/format
+             (coll [list "list/" Functor<List>]
+                   [dict #+ Dict]))
+       [macro "macro/" Monad<Meta>])
+  (luxc ["&" lang]
+        (lang ["la" analysis]
+              ["ls" synthesis]
+              (host [lua #+ Lua Expression Statement])))
+  [///]
+  (/// [".T" runtime])
+  (// ["@" common]))
+
+(do-template [<name> <lua>]
+  [(def: (<name> _) @.Nullary <lua>)]
+
+  [lua//nil      "nil"]
+  [lua//table    "{}"]
+  )
+
+(def: (lua//global proc translate inputs)
+  (-> Text @.Proc)
+  (case inputs
+    (^ (list [_ (#.Text name)]))
+    (do macro.Monad<Meta>
+      []
+      (wrap name))
+
+    _
+    (&.throw @.Wrong-Syntax (@.wrong-syntax proc inputs))))
+
+(def: (lua//call proc translate inputs)
+  (-> Text @.Proc)
+  (case inputs
+    (^ (list& functionS argsS+))
+    (do macro.Monad<Meta>
+      [functionO (translate functionS)
+       argsO+ (monad.map @ translate argsS+)]
+      (wrap (lua.apply functionO argsO+)))
+
+    _
+    (&.throw @.Wrong-Syntax (@.wrong-syntax proc inputs))))
+
+(def: lua-procs
+  @.Bundle
+  (|> (dict.new text.Hash<Text>)
+      (@.install "nil" (@.nullary lua//nil))
+      (@.install "table" (@.nullary lua//table))
+      (@.install "global" lua//global)
+      (@.install "call" lua//call)))
+
+(def: (table//call proc translate inputs)
+  (-> Text @.Proc)
+  (case inputs
+    (^ (list& tableS [_ (#.Text field)] argsS+))
+    (do macro.Monad<Meta>
+      [tableO (translate tableS)
+       argsO+ (monad.map @ translate argsS+)]
+      (wrap (lua.method field tableO argsO+)))
+
+    _
+    (&.throw @.Wrong-Syntax (@.wrong-syntax proc inputs))))
+
+(def: (table//get [fieldO tableO])
+  @.Binary
+  (runtimeT.lua//get tableO fieldO))
+
+(def: (table//set [fieldO valueO tableO])
+  @.Trinary
+  (runtimeT.lua//set tableO fieldO valueO))
+
+(def: table-procs
+  @.Bundle
+  (<| (@.prefix "table")
+      (|> (dict.new text.Hash<Text>)
+          (@.install "call" table//call)
+          (@.install "get" (@.binary table//get))
+          (@.install "set" (@.trinary table//set)))))
+
+(def: #export procedures
+  @.Bundle
+  (<| (@.prefix "lua")
+      (|> lua-procs
+          (dict.merge table-procs))))
diff --git a/new-luxc/source/luxc/lang/translation/lua/reference.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/reference.jvm.lux
new file mode 100644
index 000000000..0760e700a
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/reference.jvm.lux
@@ -0,0 +1,36 @@
+(.module:
+  lux
+  (lux [macro]
+       (data [text]
+             text/format))
+  (luxc ["&" lang]
+        (lang [".L" variable #+ Variable Register]
+              (host [lua #+ Lua Expression Statement])))
+  [//]
+  (// [".T" runtime]))
+
+(do-template [<register> <translation> <prefix>]
+  [(def: #export (<register> register)
+     (-> Register Expression)
+     (format <prefix> (%i (nat-to-int register))))
+   
+   (def: #export (<translation> register)
+     (-> Register (Meta Expression))
+     (:: macro.Monad<Meta> wrap (<register> register)))]
+
+  [closure  translate-captured "c"]
+  [variable translate-local    "v"])
+
+(def: #export (translate-variable var)
+  (-> Variable (Meta Expression))
+  (if (variableL.captured? var)
+    (translate-captured (variableL.captured-register var))
+    (translate-local (int-to-nat var))))
+
+(def: #export global
+  (-> Ident Expression)
+  //.definition-name)
+
+(def: #export (translate-definition name)
+  (-> Ident (Meta Expression))
+  (:: macro.Monad<Meta> wrap (global name)))
diff --git a/new-luxc/source/luxc/lang/translation/lua/runtime.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/runtime.jvm.lux
new file mode 100644
index 000000000..b5e2147e0
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/runtime.jvm.lux
@@ -0,0 +1,499 @@
+(.module:
+  lux
+  (lux (control ["p" parser "p/" Monad<Parser>]
+                [monad #+ do])
+       (data text/format
+             (coll [list "list/" Monad<List>]))
+       [macro]
+       (macro [code]
+              ["s" syntax #+ syntax:])
+       [io #+ Process])
+  [//]
+  (luxc [lang]
+        (lang (host [lua #+ Lua Expression Statement]))))
+
+(def: prefix Text "LuxRuntime")
+
+(def: #export unit Expression (%t //.unit))
+
+(def: (flag value)
+  (-> Bool Lua)
+  (if value
+    (%t "")
+    "null"))
+
+(def: (variant' tag last? value)
+  (-> Expression Expression Expression Expression)
+  (lua.table (list [//.variant-tag-field tag]
+                   [//.variant-flag-field last?]
+                   [//.variant-value-field value])))
+
+(def: #export (variant tag last? value)
+  (-> Nat Bool Expression Expression)
+  (variant' (%i (nat-to-int tag)) (flag last?) value))
+
+(def: none
+  Expression
+  (variant +0 false unit))
+
+(def: some
+  (-> Expression Expression)
+  (variant +1 true))
+
+(def: left
+  (-> Expression Expression)
+  (variant +0 false))
+
+(def: right
+  (-> Expression Expression)
+  (variant +1 true))
+
+(type: Runtime Lua)
+
+(def: declaration
+  (s.Syntax [Text (List Text)])
+  (p.either (p.seq s.local-symbol (p/wrap (list)))
+            (s.form (p.seq s.local-symbol (p.some s.local-symbol)))))
+
+(syntax: (runtime: [[name args] declaration]
+           definition)
+  (let [implementation (code.local-symbol (format "@@" name))
+        runtime (code.text (format "__" prefix "__" (lang.normalize-name name)))
+        argsC+ (list/map code.local-symbol args)
+        argsLC+ (list/map (|>> lang.normalize-name code.text) args)
+        declaration (` ((~ (code.local-symbol name))
+                        (~+ argsC+)))
+        type (` (-> (~+ (list.repeat (list.size argsC+) (` lua.Lua)))
+                    lua.Lua))]
+    (wrap (list (` (def: #export (~ declaration)
+                     (~ type)
+                     (lua.apply (~ runtime) (list (~+ argsC+)))))
+                (` (def: (~ implementation)
+                     Lua
+                     (~ (case argsC+
+                          #.Nil
+                          (` (lua.global! (~ runtime) (#.Some (~ definition))))
+
+                          _
+                          (` (let [(~' @) (~ runtime)
+                                   (~+ (|> (list.zip2 argsC+ argsLC+)
+                                           (list/map (function [[left right]] (list left right)))
+                                           list/join))]
+                               (lua.function! (~ runtime) (list (~+ argsLC+))
+                                              (~ definition))))))))))))
+
+(runtime: (array//copy array)
+  (lua.block! (list (lua.local! "temp" (#.Some (lua.array (list))))
+                    (lua.for-step! "idx" (lua.int 1) (lua.length array) (lua.int 1)
+                                   (lua.apply "table.insert" (list "temp" (lua.nth "idx" array))))
+                    (lua.return! "temp"))))
+
+(runtime: (array//sub array from to)
+  (lua.block! (list (lua.local! "temp" (#.Some (lua.array (list))))
+                    (lua.for-step! "idx" from to (lua.int 1)
+                                   (lua.apply "table.insert" (list "temp" (lua.nth "idx" array))))
+                    (lua.return! "temp"))))
+
+(runtime: (array//concat left right)
+  (let [copy! (function [input output]
+                (lua.for-step! "idx" (lua.int 1) (format input ".n") (lua.int 1)
+                               (lua.apply "table.insert" (list output (lua.nth "idx" input)))))]
+    (lua.block! (list (lua.local! "temp" (#.Some (lua.array (list))))
+                      (copy! left "temp")
+                      (copy! right "temp")
+                      (lua.return! "temp")))))
+
+(runtime: (lux//try op)
+  (lua.block! (list (format "local success, value = " (lua.apply "pcall" (list (lua.function (list) (lua.return! (lua.apply op (list unit)))))) ";")
+                    (lua.if! "success"
+                             (lua.return! (right "value"))
+                             (lua.return! (left "value"))))))
+
+(runtime: (lux//program-args program-args)
+  (lua.block! (list (lua.local! "inputs" (#.Some none))
+                    (lua.for-step! "idx" (lua.int 1) (lua.length program-args) (lua.int 1)
+                                   (lua.set! "inputs" (some (lua.array (list (lua.nth "idx" program-args)
+                                                                             "inputs")))))
+                    (lua.return! "inputs"))))
+
+(def: runtime//lux
+  Runtime
+  (format @@lux//try
+          @@lux//program-args))
+
+(runtime: (product//left product index)
+  (lua.block! (list (lua.local! "index_min_length" (#.Some (lua.+ (lua.int 1) index)))
+                    (lua.if! (lua.>= "index_min_length" (lua.length product))
+                             ## No need for recursion
+                             (lua.return! (lua.nth "index_min_length" product))
+                             ## Needs recursion
+                             (lua.return! (product//left (lua.nth (lua.length product)
+                                                                  product)
+                                                         (lua.- (lua.length product)
+                                                                "index_min_length")))))))
+
+(runtime: (product//right product index)
+  (lua.block! (list (lua.local! "index_min_length" (#.Some (lua.+ (lua.int 1) index)))
+                    (lua.cond! (list [(lua.= "index_min_length" (lua.length product))
+                                      ## Last element.
+                                      (lua.return! (lua.nth "index_min_length" product))]
+                                     [(lua.< "index_min_length" (lua.length product))
+                                      ## Needs recursion
+                                      (lua.return! (product//right (lua.nth (lua.length product)
+                                                                            product)
+                                                                   (lua.- (lua.length product)
+                                                                          "index_min_length")))])
+                               ## Must slice
+                               (lua.return! (array//sub product "index_min_length" (lua.length product)))))))
+
+(runtime: (sum//get sum wantedTag wantsLast)
+  (let [no-match! (lua.return! lua.nil)
+        sum-tag (format "sum." //.variant-tag-field)
+        sum-flag (format "sum." //.variant-flag-field)
+        sum-value (format "sum." //.variant-value-field)
+        is-last? (lua.= (lua.string "") sum-flag)
+        test-recursion! (lua.if! is-last?
+                                 ## Must recurse.
+                                 (lua.return! (sum//get sum-value (lua.- sum-tag wantedTag) wantsLast))
+                                 no-match!)]
+    (lua.cond! (list [(lua.= sum-tag wantedTag)
+                      (lua.if! (lua.= wantsLast sum-flag)
+                               (lua.return! sum-value)
+                               test-recursion!)]
+
+                     [(lua.> sum-tag wantedTag)
+                      test-recursion!]
+
+                     [(lua.and (lua.< sum-tag wantedTag)
+                               (lua.= (lua.string "") wantsLast))
+                      (lua.return! (variant' (lua.- wantedTag sum-tag) sum-flag sum-value))])
+
+               no-match!)))
+
+(def: runtime//adt
+  Runtime
+  (format @@product//left
+          @@product//right
+          @@sum//get))
+
+(runtime: (bit//shift-right param subject)
+  (let [mask (|> (lua.int 1)
+                 (lua.bit-shl (lua.- param (lua.int 64)))
+                 (lua.- (lua.int 1)))]
+    (lua.return! (|> subject
+                     (lua.bit-shr param)
+                     (lua.bit-and mask)))))
+
+(runtime: (bit//count subject)
+  (lua.block! (list (lua.local! "count" (#.Some (lua.int 0)))
+                    (lua.while! (lua.> (lua.int 0) subject)
+                                (lua.block! (list (lua.set! "count" (lua.+ (lua.% (lua.int 2) subject)
+                                                                           "count"))
+                                                  (lua.set! subject (lua.// (lua.int 2) subject)))))
+                    (lua.return! "count"))))
+
+(def: runtime//bit
+  Runtime
+  (format @@bit//count
+          @@bit//shift-right))
+
+(runtime: (nat//< param subject)
+  (lua.return! (lua.apply "math.ult" (list subject param))))
+
+(runtime: (nat/// param subject)
+  (lua.if! (lua.< (lua.int 0) param)
+           (lua.if! (nat//< param subject)
+                    (lua.return! (lua.int 0))
+                    (lua.return! (lua.int 1)))
+           (lua.block! (list (lua.local! "quotient" (#.Some (|> subject
+                                                                (lua.bit-shr (lua.int 1))
+                                                                (lua.// param)
+                                                                (lua.bit-shl (lua.int 1)))))
+                             (lua.local! "remainder" (#.Some (lua.- (lua.* param "quotient")
+                                                                    subject)))
+                             (lua.if! (lua.not (nat//< param "remainder"))
+                                      (lua.return! (lua.+ (lua.int 1) "quotient"))
+                                      (lua.return! "quotient"))))))
+
+(runtime: (nat//% param subject)
+  (let [flat (|> subject
+                 (nat/// param)
+                 (lua.* param))]
+    (lua.return! (lua.- flat subject))))
+
+(def: runtime//nat
+  Runtime
+  (format @@nat//<
+          @@nat///
+          @@nat//%))
+
+(runtime: deg//low-mask
+  (|> (lua.int 1)
+      (lua.bit-shl (lua.int 32))
+      (lua.- (lua.int 1))))
+
+(runtime: (deg//* param subject)
+  (lua.block! (list (lua.local! "sL" (#.Some (lua.bit-and deg//low-mask subject)))
+                    (lua.local! "sH" (#.Some (bit//shift-right (lua.int 32) subject)))
+                    (lua.local! "pL" (#.Some (lua.bit-and deg//low-mask param)))
+                    (lua.local! "pH" (#.Some (bit//shift-right (lua.int 32) param)))
+                    (lua.local! "bottom" (#.Some (bit//shift-right (lua.int 32)
+                                                                   (lua.* "pL" "sL"))))
+                    (lua.local! "middle" (#.Some (lua.+ (lua.* "pL" "sH")
+                                                        (lua.* "pH" "sL"))))
+                    (lua.local! "top" (#.Some (lua.* "pH" "sH")))
+                    (lua.return! (|> "bottom"
+                                     (lua.+ "middle")
+                                     (bit//shift-right (lua.int 32))
+                                     (lua.+ "top"))))))
+
+(runtime: (deg//leading-zeroes input)
+  (lua.block! (list (lua.local! "zeroes" (#.Some (lua.int 64)))
+                    (lua.while! (lua.not (lua.= (lua.int 0) input))
+                                (lua.block! (list (lua.set! "zeroes" (lua.- (lua.int 1) "zeroes"))
+                                                  (lua.set! input (bit//shift-right (lua.int 1) input)))))
+                    (lua.return! "zeroes"))))
+
+(runtime: (deg/// param subject)
+  (lua.if! (lua.= param subject)
+           (lua.return! (lua.int -1))
+           (lua.block! (list (lua.local! "min_shift" (#.Some (lua.apply "math.min" (list (deg//leading-zeroes param)
+                                                                                         (deg//leading-zeroes subject)))))
+                             (lua.return! (|> (lua.bit-shl "min_shift" subject)
+                                              (lua.// (|> (lua.bit-shl "min_shift" param)
+                                                          (lua.bit-and deg//low-mask)))
+                                              (lua.bit-shl (lua.int 32))))))))
+
+(runtime: (deg//from-frac input)
+  (let [->int (|>> (list) (lua.apply "math.floor"))]
+    (lua.block! (list (lua.local! "two32" (#.Some (lua.apply "math.pow" (list (lua.float 2.0) (lua.float 32.0)))))
+                      (lua.local! "shifted" (#.Some (|> input
+                                                        (lua.% (lua.float 1.0))
+                                                        (lua.* "two32"))))
+                      (lua.local! "low" (#.Some (|> "shifted"
+                                                    (lua.% (lua.float 1.0))
+                                                    (lua.* "two32")
+                                                    ->int)))
+                      (lua.local! "high" (#.Some (|> "shifted" ->int)))
+                      (lua.return! (lua.+ (lua.bit-shl (lua.int 32) "high")
+                                          "low"))))))
+
+(def: runtime//deg
+  Runtime
+  (format @@deg//low-mask
+          @@deg//*
+          @@deg//leading-zeroes
+          @@deg///
+          @@deg//from-frac))
+
+(runtime: (text//index subject param start)
+  (lua.block! (list (lua.local! "idx" (#.Some (lua.apply "string.find" (list subject param start (lua.bool true)))))
+                    (lua.if! (lua.= lua.nil "idx")
+                             (lua.return! none)
+                             (lua.return! (some "idx"))))))
+
+(runtime: (text//clip text from to)
+  (lua.block! (list (lua.local! "size" (#.Some (lua.apply "string.len" (list text))))
+                    (lua.if! (lua.or (lua.> "size" from)
+                                     (lua.> "size" to))
+                             (lua.return! none)
+                             (lua.return! (some (lua.apply "string.sub" (list text from to))))))))
+
+(runtime: (text//replace-once text to-find replacement)
+  (let [find-index (lua.apply "string.find" (list text to-find (lua.int 1) (lua.bool true)))]
+    (lua.block! (list (lua.local! "findSize" (#.Some (lua.apply "string.len" (list to-find))))
+                      (lua.local! "parts" (#.Some (lua.array (list))))
+                      (lua.local! "idx" (#.Some find-index))
+                      (lua.when! (lua.not (lua.= lua.nil "idx"))
+                                 (let [find-pre (lua.apply "string.sub" (list text (lua.int 1) "idx"))
+                                       find-post (lua.apply "string.sub" (list text "idx" (lua.+ "idx" "findSize")))]
+                                   (lua.block! (list (lua.apply "table.insert" (list "parts" find-pre))
+                                                     (lua.apply "table.insert" (list "parts" replacement))
+                                                     (lua.set! text find-post)))))
+                      (lua.apply "table.insert" (list "parts" text))
+                      (lua.return! (lua.apply "table.concat" (list "parts")))))))
+
+(runtime: (text//replace-all text to-find replacement)
+  (let [find-index (lua.apply "string.find" (list text to-find (lua.int 1) (lua.bool true)))]
+    (lua.block! (list (lua.local! "findSize" (#.Some (lua.apply "string.len" (list to-find))))
+                      (lua.local! "parts" (#.Some (lua.array (list))))
+                      (lua.local! "idx" (#.Some find-index))
+                      (lua.while! (lua.not (lua.= lua.nil "idx"))
+                                  (let [find-pre (lua.apply "string.sub" (list text (lua.int 1) (lua.- (lua.int 1) "idx")))
+                                        find-post (lua.apply "string.sub" (list text (lua.+ "findSize" "idx")))]
+                                    (lua.block! (list (lua.apply "table.insert" (list "parts" find-pre))
+                                                      (lua.apply "table.insert" (list "parts" replacement))
+                                                      (lua.set! text find-post)
+                                                      (lua.set! "idx" find-index)))))
+                      (lua.apply "table.insert" (list "parts" text))
+                      (lua.return! (lua.apply "table.concat" (list "parts")))))))
+
+(runtime: (text//char text idx)
+  (lua.block! (list (lua.local! "char" (#.Some (lua.apply "string.byte" (list text idx))))
+                    (lua.if! (lua.= lua.nil "char")
+                             (lua.return! none)
+                             (lua.return! (some "char"))))))
+
+(runtime: (text//hash input)
+  (lua.block! (list (lua.local! "hash" (#.Some (lua.int 0)))
+                    (lua.for-step! "idx" (lua.int 1) (lua.apply "string.len" (list input)) (lua.int 1)
+                                   (lua.set! "hash" (|> "hash"
+                                                        (lua.bit-shl (lua.int 5))
+                                                        (lua.- "hash")
+                                                        (lua.+ (lua.apply "string.byte" (list input "idx"))))))
+                    (lua.return! "hash"))))
+
+(def: runtime//text
+  Runtime
+  (format @@text//index
+          @@text//clip
+          @@text//replace-once
+          @@text//replace-all
+          @@text//char
+          @@text//hash))
+
+(def: (check-index-out-of-bounds array idx body!)
+  (-> Expression Expression Statement Statement)
+  (lua.if! (lua.<= (lua.length array)
+                   idx)
+           body!
+           (lua.error (lua.string "Array index out of bounds!"))))
+
+(runtime: (array//new size)
+  (lua.block! (list (lua.local! "output" (#.Some (lua.array (list))))
+                    (lua.for-step! "idx" (lua.int 1) size (lua.int 1)
+                                   (lua.apply "table.insert" (list "output" unit)))
+                    (lua.return! "output"))))
+
+(runtime: (array//get array idx)
+  (<| (check-index-out-of-bounds array idx)
+      (lua.block! (list (lua.local! "temp" (#.Some (lua.nth idx array)))
+                        (lua.if! (lua.or (lua.= lua.nil "temp")
+                                         (lua.= unit "temp"))
+                                 (lua.return! none)
+                                 (lua.return! (some "temp")))))))
+
+(runtime: (array//put array idx value)
+  (<| (check-index-out-of-bounds array idx)
+      (lua.block! (list (lua.set! (lua.nth idx array) value)
+                        (lua.return! array)))))
+
+(runtime: (array//remove array idx)
+  (array//put array idx unit))
+
+(def: runtime//array
+  Runtime
+  (format @@array//sub
+          @@array//concat
+          @@array//copy
+          @@array//get
+          @@array//put
+          @@array//remove
+          ))
+
+(def: #export atom//field Text "_lux_atom")
+
+(runtime: (atom//compare-and-swap atom old new)
+  (let [atom//field (lua.string atom//field)]
+    (lua.if! (lua.= old (lua.nth atom//field atom))
+             (lua.block! (list (lua.set! (lua.nth atom//field atom) new)
+                               (lua.return! (lua.bool true))))
+             (lua.return! (lua.bool false)))))
+
+(def: runtime//atom
+  Runtime
+  (format @@atom//compare-and-swap))
+
+(runtime: (box//write value box)
+  (lua.block! (list (lua.set! (lua.nth (lua.int 0) box)
+                              value)
+                    (lua.return! unit))))
+
+(def: runtime//box
+  Runtime
+  (format @@box//write))
+
+(def: process//incoming
+  Text
+  (lang.normalize-name "process//incoming"))
+
+(runtime: (process//loop _)
+  (let [migrate-incoming! (lua.block! (list (lua.for-step! "idx" (lua.int 1) (lua.length process//incoming) (lua.int 1)
+                                                           (lua.apply "table.insert" (list "queue" (lua.nth "idx" process//incoming))))
+                                            (lua.set! process//incoming (lua.array (list)))))
+        consume-queue! (lua.block! (list (lua.local! "survivors" (#.Some (lua.array (list))))
+                                         (lua.local! "active_processes" (#.Some (lua.length "queue")))
+                                         (lua.for-step! "idx" (lua.int 1) "active_processes" (lua.int 1)
+                                                        (lua.block! (list (lua.local! "process" (#.Some (lua.nth "idx" "queue")))
+                                                                          (lua.when! (lua.apply "coroutine.resume" (list "process"))
+                                                                                     (lua.apply "table.insert" (list "survivors" "process"))))))
+                                         (lua.set! "queue" "survivors")))]
+    (lua.block! (list (lua.local! "queue" (#.Some (lua.array (list))))
+                      migrate-incoming!
+                      consume-queue!
+                      (lua.when! (lua.> (lua.int 0)
+                                        (lua.length "queue"))
+                                 (process//loop unit))))))
+
+(runtime: (process//future procedure)
+  (lua.block! (list (lua.apply "table.insert" (list process//incoming
+                                                    (lua.function (list)
+                                                      (lua.return! (lua.apply procedure (list unit))))))
+                    (lua.return! unit))))
+
+(runtime: (process//schedule milli-seconds procedure)
+  (let [now (lua.apply "os.time" (list))]
+    (lua.block! (list (lua.local! "start" (#.Some now))
+                      (lua.local! "seconds" (#.Some (lua.// (lua.int 1_000)
+                                                            milli-seconds)))
+                      (lua.apply "table.insert" (list process//incoming
+                                                      (lua.function (list)
+                                                        (lua.block! (list (lua.while! (lua.< "seconds" (lua.- "start" now))
+                                                                                      (lua.apply "coroutine.yield" (list)))
+                                                                          (lua.return! (lua.apply procedure (list unit))))))))
+                      (lua.return! unit)))))
+
+(def: runtime//process
+  Runtime
+  (format (lua.global! process//incoming (#.Some (lua.array (list))))
+          @@process//loop
+          @@process//future
+          @@process//schedule))
+
+(runtime: (lua//get object field)
+  (lua.block! (list (lua.local! "value" (#.Some (lua.nth field object)))
+                    (lua.if! (lua.= lua.nil "value")
+                             (lua.return! none)
+                             (lua.return! (some "value"))))))
+
+(runtime: (lua//set object field value)
+  (lua.block! (list (lua.set! (lua.nth field object) value)
+                    (lua.return! object))))
+
+(def: runtime//lua
+  Runtime
+  (format @@lua//get
+          @@lua//set))
+
+(def: runtime
+  Runtime
+  (format runtime//lux
+          runtime//adt
+          runtime//bit
+          runtime//nat
+          runtime//deg
+          runtime//text
+          runtime//array
+          runtime//atom
+          runtime//box
+          runtime//process
+          runtime//lua))
+
+(def: #export artifact Text (format prefix ".lua"))
+
+(def: #export translate
+  (Meta (Process Unit))
+  (do macro.Monad<Meta>
+    [_ //.init-module-buffer
+     _ (//.save runtime)]
+    (//.save-module! artifact)))
diff --git a/new-luxc/source/luxc/lang/translation/lua/statement.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/statement.jvm.lux
new file mode 100644
index 000000000..eb181d160
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/statement.jvm.lux
@@ -0,0 +1,48 @@
+(.module:
+  lux
+  (lux (control [monad #+ do])
+       [macro]
+       (data text/format))
+  (luxc (lang [".L" module]
+              (host [lua #+ Lua Expression Statement])))
+  [//]
+  (// [".T" runtime]
+      [".T" reference]
+      [".T" eval]))
+
+(def: #export (translate-def name expressionT expressionO metaV)
+  (-> Text Type Expression Code (Meta Unit))
+  (do macro.Monad<Meta>
+    [current-module macro.current-module-name
+     #let [def-ident [current-module name]]]
+    (case (macro.get-symbol-ann (ident-for #.alias) metaV)
+      (#.Some real-def)
+      (do @
+        [[realT realA realV] (macro.find-def real-def)
+         _ (moduleL.define def-ident [realT metaV realV])]
+        (wrap []))
+
+      _
+      (do @
+        [#let [def-name (referenceT.global def-ident)]
+         _ (//.save (lua.global! def-name (#.Some expressionO)))
+         expressionV (evalT.eval def-name)
+         _ (moduleL.define def-ident [expressionT metaV expressionV])
+         _ (if (macro.type? metaV)
+             (case (macro.declared-tags metaV)
+               #.Nil
+               (wrap [])
+
+               tags
+               (moduleL.declare-tags tags (macro.export? metaV) (:! Type expressionV)))
+             (wrap []))
+         #let [_ (log! (format "DEF " (%ident def-ident)))]]
+        (wrap []))
+      )))
+
+(def: #export (translate-program programO)
+  (-> Expression (Meta Statement))
+  (macro.fail "translate-program NOT IMPLEMENTED YET")
+  ## (hostT.save (format "var " (referenceT.variable +0) " = " runtimeT.lux//program-args "();"
+  ##                     "(" programO ")(null);"))
+  )
diff --git a/new-luxc/source/luxc/lang/translation/lua/structure.jvm.lux b/new-luxc/source/luxc/lang/translation/lua/structure.jvm.lux
new file mode 100644
index 000000000..c629b0cae
--- /dev/null
+++ b/new-luxc/source/luxc/lang/translation/lua/structure.jvm.lux
@@ -0,0 +1,31 @@
+(.module:
+  lux
+  (lux (control [monad #+ do])
+       (data [text]
+             text/format)
+       [macro])
+  (luxc ["&" lang]
+        (lang [synthesis #+ Synthesis]
+              (host [js #+ JS Expression Statement])))
+  [//]
+  (// [".T" runtime]))
+
+(def: #export (translate-tuple translate elemsS+)
+  (-> (-> Synthesis (Meta Expression)) (List Synthesis) (Meta Expression))
+  (case elemsS+
+    #.Nil
+    (:: macro.Monad<Meta> wrap runtimeT.unit)
+
+    (#.Cons singletonS #.Nil)
+    (translate singletonS)
+
+    _
+    (do macro.Monad<Meta>
+      [elemsT+ (monad.map @ translate elemsS+)]
+      (wrap (format "{" (text.join-with "," elemsT+) "}")))))
+
+(def: #export (translate-variant translate tag tail? valueS)
+  (-> (-> Synthesis (Meta Expression)) Nat Bool Synthesis (Meta Expression))
+  (do macro.Monad<Meta>
+    [valueT (translate valueS)]
+    (wrap (runtimeT.variant tag tail? valueT))))