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(.module:
[lux #- not or and list if function cond when let]
(lux (control pipe)
(data [maybe "maybe/" Functor<Maybe>]
[text]
text/format
[number]
(coll [list "list/" Functor<List> Fold<List>]))
(type abstract)))
(abstract: #export Single {} Unit)
(abstract: #export Poly {} Unit)
(abstract: #export (Var kind)
{}
Text
(def: name (All [k] (-> (Var k) Text)) (|>> @representation))
(def: #export var (-> Text (Var Single)) (|>> @abstraction))
(def: #export (poly vars)
(-> (List (Var Single)) (Var Poly))
(@abstraction
(format "(" (|> vars (list/map ..name) (text.join-with " ")) ")")))
(def: #export (poly+ vars rest)
(-> (List (Var Single)) (Var Single) (Var Poly))
(@abstraction
(format "(" (|> vars (list/map ..name) (text.join-with " "))
" . " (..name rest)
")")))
)
(type: #export SVar (Var Single))
(type: #export PVar (Var Poly))
(type: #export *Var (Ex [k] (Var k)))
(abstract: #export Expression
{}
Text
(def: #export expression (-> Expression Text) (|>> @representation))
(def: #export code (-> Text Expression) (|>> @abstraction))
(def: #export nil
Expression
(@abstraction "'()"))
(def: #export bool
(-> Bool Expression)
(|>> (case> true "#t"
false "#f")
@abstraction))
(def: #export int
(-> Int Expression)
(|>> %i @abstraction))
(def: #export float
(-> Frac Expression)
(|>> (cond> [(f/= number.positive-infinity)]
[(new> "+inf.0")]
[(f/= number.negative-infinity)]
[(new> "-inf.0")]
[number.not-a-number?]
[(new> "+nan.0")]
## else
[%f])
@abstraction))
(def: #export positive-infinity Expression (..float number.positive-infinity))
(def: #export negative-infinity Expression (..float number.negative-infinity))
(def: #export not-a-number Expression (..float number.not-a-number))
(def: #export string
(-> Text Expression)
(|>> %t @abstraction))
(def: #export symbol
(-> Text Expression)
(|>> (format "'") @abstraction))
(def: #export (form elements)
(-> (List Expression) Expression)
(@abstraction
(format "(" (|> elements (list/map expression) (text.join-with " ")) ")")))
(def: #export @@
(All [k] (-> (Var k) Expression))
(|>> ..name @abstraction))
(def: #export global
(-> Text Expression)
(|>> var @@))
(def: #export (apply func args)
(-> Expression (List Expression) Expression)
(form (#.Cons func args)))
(do-template [<name> <function>]
[(def: #export <name>
(-> (List Expression) Expression)
(apply (..global <function>)))]
[vector "vector"]
[list "list"]
)
(def: #export (apply1 func)
(-> Expression (-> Expression Expression))
(|>> (.list) (..apply func)))
(do-template [<lux-name> <scheme-name>]
[(def: #export <lux-name> (apply1 (..global <scheme-name>)))]
[length "length"]
[values "values"]
[null? "null?"]
[car "car"]
[cdr "cdr"]
[raise "raise"]
[error-object-message "error-object-message"]
[make-vector "make-vector"]
[not "not"]
[string-hash "string-hash"]
)
(def: #export (apply2 func)
(-> Expression (-> Expression Expression Expression))
(.function (_ _0 _1)
(..apply func (.list _0 _1))))
(do-template [<lux-name> <scheme-name>]
[(def: #export <lux-name> (apply2 (..global <scheme-name>)))]
[append "append"]
[cons "cons"]
[vector-ref "vector-ref"]
[list-tail "list-tail"]
)
(def: #export (apply3 func)
(-> Expression (-> Expression Expression Expression Expression))
(.function (_ _0 _1 _2)
(..apply func (.list _0 _1 _2))))
(do-template [<lux-name> <scheme-name>]
[(def: #export <lux-name> (apply3 (..global <scheme-name>)))]
[vector-set! "vector-set!"]
)
(def: #export (vector-copy! _0 _1 _2 _3 _4)
(-> Expression Expression Expression Expression Expression
Expression)
(..apply (..global "vector-copy!")
(.list _0 _1 _2 _3 _4)))
(do-template [<lux-name> <scheme-name>]
[(def: #export <lux-name>
(-> (List Expression) Expression)
(|>> (.list& (..global <scheme-name>)) ..form))]
[or "or"]
[and "and"]
)
(do-template [<lux-name> <scheme-name>]
[(def: #export (<lux-name> param subject)
(-> Expression Expression Expression)
(..form (.list (..global <scheme-name>) subject param)))]
[= "="]
[eq? "eq?"]
[eqv? "eqv?"]
[< "<"]
[<= "<="]
[> ">"]
[>= ">="]
[string=? "string=?"]
[string<? "string<?"]
[+ "+"]
[- "-"]
[/ "/"]
[* "*"]
[expt "expt"]
[remainder "remainder"]
[quotient "quotient"]
[mod "mod"]
[arithmetic-shift "arithmetic-shift"]
[bit-and "bitwise-and"]
[bit-or "bitwise-ior"]
[bit-xor "bitwise-xor"]
)
(do-template [<lux-name> <scheme-name> <var>]
[(def: #export (<lux-name> bindings body)
(-> (List [<var> Expression]) Expression Expression)
(..form (.list (..global <scheme-name>)
(|> bindings
(list/map (.function (_ [fname fvalue])
(..form (.list (@@ fname) fvalue))))
..form)
body)))]
[let "let" SVar]
[let* "let*" SVar]
[letrec "letrec" SVar]
[let-values "let-values" PVar]
)
(def: #export (if test then else)
(-> Expression Expression Expression Expression)
(..form (.list (..global "if") test then else)))
(def: #export (when test then)
(-> Expression Expression Expression)
(..form (.list (..global "when") test then)))
(def: #export (cond clauses else)
(-> (List [Expression Expression]) Expression Expression)
(list/fold (.function (_ [test then] next)
(if test then next))
else
(list.reverse clauses)))
(def: #export (lambda input body)
(-> *Var Expression Expression)
(..form (.list (..global "lambda") (@@ input) body)))
(def: #export (define name inputs body)
(-> SVar (List SVar) Expression Expression)
(..form (.list (..global "define")
(case inputs
#.Nil
(@@ name)
_
(@@ (..poly (#.Cons name inputs))))
body)))
(def: #export begin
(-> (List Expression) Expression)
(|>> (#.Cons (..global "begin")) ..form))
(def: #export (set! name value)
(-> SVar Expression Expression)
(..form (.list (..global "set!") (@@ name) value)))
(def: #export (with-exception-handler handler body)
(-> Expression Expression Expression)
(..form (.list (..global "with-exception-handler") handler body)))
)
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