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(.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]))
  [///]
  (/// [".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))))))

(def: (self-contained content)
  (-> ///.Expression ///.Expression)
  (format "(" content ")"))

(def: (void action)
  (-> ///.Expression ///.Expression)
  (format "(" action "," runtimeT.unit ")"))

## [Procedures]
## [[Lux]]
(def: (lux//is [leftJS rightJS])
  Binary
  (self-contained (format leftJS " === " rightJS)))

(def: (lux//if [testJS thenJS elseJS])
  Trinary
  (caseT.translate-if testJS thenJS elseJS))

(def: (lux//try riskyJS)
  Unary
  (format runtimeT.lux//try "(" riskyJS ")"))

(def: (lux//noop valueJS)
  Unary
  valueJS)

(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> [subjectJS paramJS])
     Binary
     (format <op> "(" subjectJS "," paramJS ")"))]

  [bit//and                  runtimeT.bit//and]
  [bit//or                   runtimeT.bit//or]
  [bit//xor                  runtimeT.bit//xor]
  )

(do-template [<name> <op>]
  [(def: (<name> [subjectJS paramJS])
     Binary
     (let [simple-param (format runtimeT.int//to-number "(" paramJS ")")]
       (format <op> "(" subjectJS "," simple-param ")")))]

  [bit//shift-left           runtimeT.bit//shift-left]
  [bit//shift-right          runtimeT.bit//signed-shift-right]
  [bit//unsigned-shift-right runtimeT.bit//shift-right]
  )

(def: (bit//count subjectJS)
  Unary
  (format runtimeT.bit//count "(" subjectJS ")"))

## [[Arrays]]
(def: (array//new sizeJS)
  Unary
  (self-contained (format "new Array(" runtimeT.int//to-number "(" sizeJS ")" ")")))

(def: (array//get [arrayJS idxJS])
  Binary
  (format runtimeT.array//get "(" arrayJS "," idxJS ")"))

(def: (array//put [arrayJS idxJS elemJS])
  Trinary
  (format runtimeT.array//put "(" arrayJS "," idxJS "," elemJS ")"))

(def: (array//remove [arrayJS idxJS])
  Binary
  (format runtimeT.array//remove "(" arrayJS "," idxJS ")"))

(def: (array//size arrayJS)
  Unary
  (format arrayJS ".length"))

## [[Numbers]]
(host.import java/lang/Long
  (#static MIN_VALUE Long)
  (#static MAX_VALUE Long))

(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                           runtimeT.int]
  [nat//max                -1                           runtimeT.int]

  [int//min                Long::MIN_VALUE              runtimeT.int]
  [int//max                Long::MAX_VALUE              runtimeT.int]
  
  [frac//smallest          Double::MIN_VALUE            runtimeT.frac]
  [frac//min               (f/* -1.0 Double::MAX_VALUE) runtimeT.frac]
  [frac//max               Double::MAX_VALUE            runtimeT.frac]
  [frac//not-a-number      Double::NaN                  runtimeT.frac]
  [frac//positive-infinity Double::POSITIVE_INFINITY    runtimeT.frac]
  [frac//negative-infinity Double::NEGATIVE_INFINITY    runtimeT.frac]

  [deg//min                 0                           runtimeT.int]
  [deg//max                -1                           runtimeT.int]
  )

(do-template [<name> <op>]
  [(def: (<name> [subjectJS paramJS])
     Binary
     (format <op> "(" subjectJS "," paramJS ")"))]

  [int//add        runtimeT.int//+]
  [int//sub        runtimeT.int//-]
  [int//mul        runtimeT.int//*]
  [int//div        runtimeT.int///]
  [int//rem        runtimeT.int//%]
  
  [nat//add        runtimeT.int//+]
  [nat//sub        runtimeT.int//-]
  [nat//mul        runtimeT.int//*]
  [nat//div        runtimeT.nat///]
  [nat//rem        runtimeT.nat//%]

  [deg//add        runtimeT.int//+]
  [deg//sub        runtimeT.int//-]
  [deg//mul        runtimeT.deg//*]
  [deg//div        runtimeT.deg///]
  [deg//rem        runtimeT.int//-]
  [deg//scale      runtimeT.int//*]
  [deg//reciprocal runtimeT.int///]
  )

(do-template [<name> <op>]
  [(def: (<name> [subjectJS paramJS])
     Binary
     (self-contained (format subjectJS " " <op> " " paramJS)))]

  [frac//add "+"]
  [frac//sub "-"]
  [frac//mul "*"]
  [frac//div "/"]
  [frac//rem "%"]
  [frac//=   "==="]
  [frac//<   "<"]

  [text//=   "==="]
  [text//<   "<"]
  )

(do-template [<name> <cmp>]
  [(def: (<name> [subjectJS paramJS])
     Binary
     (format <cmp> "(" subjectJS "," paramJS ")"))]

  [nat//= runtimeT.int//=]
  [nat//< runtimeT.nat//<]
  [int//= runtimeT.int//=]
  [int//< runtimeT.int//<]
  [deg//= runtimeT.int//=]
  [deg//< runtimeT.nat//<]
  )

(do-template [<name>]
  [(def: (<name> inputJS)
     Unary
     inputJS)]

  [nat//to-int]
  [int//to-nat]
  )

(def: (frac//encode inputJS)
  Unary
  (format (self-contained inputJS) ".toString()"))

(def: (frac//decode inputJS)
  Unary
  (let [decoding (format "parseFloat(" inputJS ")")
        thunk (self-contained (format "function () { return " decoding "; }"))]
    (lux//try thunk)))

(do-template [<name> <transform>]
  [(def: (<name> inputJS)
     Unary
     (format <transform> "(" inputJS ")"))]

  [int//to-frac runtimeT.int//to-number]
  [frac//to-int runtimeT.int//from-number]
  [frac//to-deg runtimeT.deg//from-frac]
  [deg//to-frac runtimeT.deg//to-frac]
  [text//hash   runtimeT.text//hash]
  )

(def: (nat//char inputJS)
  Unary
  (format "String.fromCharCode" "(" (int//to-frac inputJS) ")"))

## [[Text]]
(do-template [<name> <op>]
  [(def: (<name> inputJS)
     Unary
     (format inputJS <op>))]

  [text//size  ".length"]
  [text//trim  ".trim()"]
  [text//upper ".toUpperCase()"]
  [text//lower ".toLowerCase()"]
  )

(do-template [<name> <method>]
  [(def: (<name> [subjectJS paramJS])
     Binary
     (format subjectJS "." <method> "(" paramJS ")"))]

  [text//concat    "concat"]
  [text//contains? "includes"]
  )

(def: (text//char [subjectJS paramJS])
  Binary
  (format runtimeT.text//char "(" subjectJS "," paramJS ")"))

(do-template [<name> <runtime>]
  [(def: (<name> [subjectJS paramJS extraJS])
     Trinary
     (format <runtime> "(" subjectJS "," paramJS "," extraJS ")"))]

  [text//clip        runtimeT.text//clip]
  [text//replace-all runtimeT.text//replace-all]
  )

(def: (text//replace-once [subjectJS paramJS extraJS])
  Trinary
  (format subjectJS ".replace(" paramJS "," extraJS ")"))

(do-template [<name> <method>]
  [(def: (<name> [textJS partJS startJS])
     Trinary
     (format <method> "(" textJS "," partJS "," startJS ")"))]

  [text//index      runtimeT.text//index]
  [text//last-index runtimeT.text//last-index]
  )

## [[Math]]
(do-template [<name> <method>]
  [(def: (<name> inputJS)
     Unary
     (format "Math." <method> "(" inputJS ")"))]

  [math//cos "cos"]
  [math//sin "sin"]
  [math//tan "tan"]
  [math//acos "acos"]
  [math//asin "asin"]
  [math//atan "atan"]
  [math//cosh "cosh"]
  [math//sinh "sinh"]
  [math//tanh "tanh"]
  [math//exp "exp"]
  [math//log "log"]
  [math//root2 "sqrt"]
  [math//root3 "cbrt"]
  [math//ceil "ceil"]
  [math//floor "floor"]
  [math//round "round"]
  )

(do-template [<name> <method>]
  [(def: (<name> [inputJS paramJS])
     Binary
     (format "Math." <method> "(" inputJS "," paramJS ")"))]

  [math//atan2 "atan2"]
  [math//pow   "pow"]
  )

## [[IO]]
(def: (io//log messageJS)
  Unary
  (void (format "console.log(" messageJS ")")))

(def: (io//error messageJS)
  Unary
  (format runtimeT.io//error "(" messageJS ")"))

(def: (io//exit codeJS)
  Unary
  (format "("
          (format "(!((typeof process) === \"undefined\") && process.exit && process.exit(" (int//to-frac codeJS) "))")
          " || "
          "window.close()"
          " || "
          "location.reload()"
          ")"))

(def: (io//current-time [])
  Nullary
  (frac//to-int "(new Date()).getTime()"))

## [[Atoms]]
(def: (atom//new initJS)
  Unary
  (format "{" runtimeT.atom-field ":" initJS "}"))

(def: (atom//read atomJS)
  Unary
  (format atomJS "." runtimeT.atom-field))

(def: (atom//compare-and-swap [atomJS oldJS newJS])
  Trinary
  (format runtimeT.atom//compare-and-swap "(" atomJS "," oldJS "," newJS ")"))

## [[Box]]
(def: (box//new initJS)
  Unary
  (format "[" initJS "]"))

(def: (box//read boxJS)
  Unary
  (format "(" boxJS ")[0]"))

(def: (box//write [valueJS boxJS])
  Binary
  (void (format (box//read boxJS) " = " valueJS)))

## [[Processes]]
(def: (process//concurrency-level [])
  Nullary
  (frac//to-int "1"))

(def: (process//future procedureJS)
  Unary
  (format "setTimeout("
          "function() {" procedureJS "(null)" "}"
          ",0)"))

(def: (process//schedule [milli-secondsJS procedureJS])
  Binary
  (format "setTimeout("
          "function() {" procedureJS "(null)" "}"
          "," (int//to-frac milli-secondsJS) ")"))

## [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 "cosh" (unary math//cosh))
          (install "sinh" (unary math//sinh))
          (install "tanh" (unary math//tanh))
          (install "exp" (unary math//exp))
          (install "log" (unary math//log))
          (install "root2" (unary math//root2))
          (install "root3" (unary math//root3))
          (install "ceil" (unary math//ceil))
          (install "floor" (unary math//floor))
          (install "round" (unary math//round))
          (install "atan2" (binary math//atan2))
          (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)
          )))