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|
(.module:
[lux #- not or and list if function cond when]
(lux (control pipe)
(data [maybe "maybe/" Functor<Maybe>]
[text]
text/format
[number]
(coll [list "list/" Functor<List> Fold<List>]))
(type abstract)))
(abstract: #export Single {} Any)
(abstract: #export Poly {} Any)
(abstract: #export (Var kind)
{}
Text
(def: name (All [k] (-> (Var k) Text)) (|>> :representation))
(def: #export var (-> Text (Var Single)) (|>> :abstraction))
(def: #export var-args (Var Poly) (:abstraction "..."))
)
(type: #export SVar (Var Single))
(type: #export PVar (Var Poly))
(abstract: #export Expression
{}
Text
(def: #export expression (-> Expression Text) (|>> :representation))
(def: #export code (-> Text Expression) (|>> :abstraction))
(def: (self-contained code)
(-> Text Expression)
(:abstraction
(format "(" code ")")))
(def: nest
(-> Text Text)
(|>> (format "\n")
(text.replace-all "\n" "\n ")))
(def: (_block expression)
(-> Text Text)
(format "{" (nest expression) "\n" "}"))
(def: #export (block expression)
(-> Expression Expression)
(:abstraction
(format "{" (:representation expression) "}")))
(def: #export null
Expression
(|> "NULL" self-contained))
(def: #export n/a
Expression
(|> "NA" self-contained))
(def: #export not-available Expression n/a)
(def: #export not-applicable Expression n/a)
(def: #export no-answer Expression n/a)
(def: #export bool
(-> Bit Expression)
(|>> (case> #0 "FALSE"
#1 "TRUE")
self-contained))
(def: #export (int value)
(-> Int Expression)
(self-contained
(format "as.integer(" (%i value) ")")))
(def: #export float
(-> Frac Expression)
(|>> (cond> [(f/= number.positive-infinity)]
[(new> "1.0/0.0")]
[(f/= number.negative-infinity)]
[(new> "-1.0/0.0")]
[(f/= number.not-a-number)]
[(new> "0.0/0.0")]
## else
[%f])
self-contained))
(def: #export string
(-> Text Expression)
(|>> %t self-contained))
(def: (composite-literal left-delimiter right-delimiter entry-serializer)
(All [a] (-> Text Text (-> a Text)
(-> (List a) Expression)))
(.function (_ entries)
(self-contained
(format left-delimiter
(|> entries (list/map entry-serializer) (text.join-with ","))
right-delimiter))))
(def: #export named-list
(-> (List [Text Expression]) Expression)
(composite-literal "list(" ")" (.function (_ [key value])
(format key "=" (:representation value)))))
(template [<name> <function>]
[(def: #export <name>
(-> (List Expression) Expression)
(composite-literal (format <function> "(") ")" expression))]
[vector "c"]
[list "list"]
)
(def: #export (slice from to list)
(-> Expression Expression Expression Expression)
(self-contained
(format (:representation list)
"[" (:representation from) ":" (:representation to) "]")))
(def: #export (slice-from from list)
(-> Expression Expression Expression)
(self-contained
(format (:representation list)
"[-1" ":-" (:representation from) "]")))
(def: #export (apply args func)
(-> (List Expression) Expression Expression)
(self-contained
(format (:representation func) "(" (text.join-with "," (list/map expression args)) ")")))
(def: #export (apply-kw args kw-args func)
(-> (List Expression) (List [Text Expression]) Expression Expression)
(self-contained
(format (:representation func)
(format "("
(text.join-with "," (list/map expression args)) ","
(text.join-with "," (list/map (.function (_ [key val])
(format key "=" (expression val)))
kw-args))
")"))))
(def: #export (nth idx list)
(-> Expression Expression Expression)
(self-contained
(format (:representation list) "[[" (:representation idx) "]]")))
(def: #export (if test then else)
(-> Expression Expression Expression Expression)
(self-contained
(format "if(" (:representation test) ")"
" " (.._block (:representation then))
" else " (.._block (:representation else)))))
(def: #export (when test then)
(-> Expression Expression Expression)
(self-contained
(format "if(" (:representation test) ") {"
(.._block (:representation then))
"\n" "}")))
(def: #export (cond clauses else)
(-> (List [Expression Expression]) Expression Expression)
(list/fold (.function (_ [test then] next)
(if test then next))
else
(list.reverse clauses)))
(template [<name> <op>]
[(def: #export (<name> param subject)
(-> Expression Expression Expression)
(self-contained
(format (:representation subject)
" " <op> " "
(:representation param))))]
[= "=="]
[< "<"]
[<= "<="]
[> ">"]
[>= ">="]
[+ "+"]
[- "-"]
[* "*"]
[/ "/"]
[%% "%%"]
[** "**"]
[or "||"]
[and "&&"]
)
(def: #export @@
(All [k] (-> (Var k) Expression))
(|>> ..name self-contained))
(def: #export global
(-> Text Expression)
(|>> var @@))
(template [<name> <func>]
[(def: #export (<name> param subject)
(-> Expression Expression Expression)
(..apply (.list subject param) (..global <func>)))]
[bit-or "bitwOr"]
[bit-and "bitwAnd"]
[bit-xor "bitwXor"]
[bit-shl "bitwShiftL"]
[bit-ushr "bitwShiftR"]
)
(def: #export (bit-not subject)
(-> Expression Expression)
(..apply (.list subject) (..global "bitwNot")))
(template [<name> <op>]
[(def: #export <name>
(-> Expression Expression)
(|>> :representation (format <op>) self-contained))]
[not "!"]
[negate "-"]
)
(def: #export (length list)
(-> Expression Expression)
(..apply (.list list) (..global "length")))
(def: #export (range from to)
(-> Expression Expression Expression)
(self-contained
(format (:representation from) ":" (:representation to))))
(def: #export (function inputs body)
(-> (List (Ex [k] (Var k))) Expression Expression)
(let [args (|> inputs (list/map ..name) (text.join-with ", "))]
(self-contained
(format "function(" args ") "
(.._block (:representation body))))))
(def: #export (try body warning error finally)
(-> Expression (Maybe Expression) (Maybe Expression) (Maybe Expression) Expression)
(let [optional (: (-> Text (Maybe Expression) (-> Text Text) Text)
(.function (_ parameter value preparation)
(|> value
(maybe/map (|>> :representation preparation (format ", " parameter " = ")))
(maybe.default ""))))]
(self-contained
(format "tryCatch("
(.._block (:representation body))
(optional "warning" warning id)
(optional "error" error id)
(optional "finally" finally .._block)
")"))))
(def: #export (while test body)
(-> Expression Expression Expression)
(self-contained
(format "while (" (:representation test) ") "
(.._block (:representation body)))))
(def: #export (for-in var inputs body)
(-> SVar Expression Expression Expression)
(self-contained
(format "for (" (..name var) " in " (..expression inputs) ")"
(.._block (:representation body)))))
(template [<name> <keyword>]
[(def: #export (<name> message)
(-> Expression Expression)
(..apply (.list message) (..global <keyword>)))]
[stop "stop"]
[print "print"]
)
(def: #export (set! var value)
(-> (Var Single) Expression Expression)
(self-contained
(format (..name var) " <- " (:representation value))))
(def: #export (set-nth! idx value list)
(-> Expression Expression SVar Expression)
(self-contained
(format (..name list) "[[" (:representation idx) "]] <- " (:representation value))))
(def: #export (then pre post)
(-> Expression Expression Expression)
(:abstraction
(format (:representation pre)
"\n"
(:representation post))))
)
|
