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|
(.module:
lux
(lux (control ["p" parser "p/" Monad<Parser>]
[monad #+ do])
(data [bit]
[number #+ hex]
text/format
(coll [list "list/" Monad<List>]))
[macro]
(macro [code]
["s" syntax #+ syntax:])
[io #+ Process])
[//]
(luxc [lang]
(lang (host ["_" common-lisp #+ SVar Expression @@]))))
(def: prefix Text "LuxRuntime")
(def: #export unit Expression (_.string //.unit))
(def: (flag value)
(-> Bit Expression)
(if value
(_.string "")
_.nil))
(def: (variant' tag last? value)
(-> Expression Expression Expression Expression)
(<| (_.cons (_.symbol //.variant-tag))
(_.cons tag)
(_.cons last?)
value))
(def: #export (variant tag last? value)
(-> Nat Bit Expression Expression)
(variant' (_.int (:coerce Int tag)) (flag last?) value))
(def: #export none
Expression
(variant +0 false unit))
(def: #export some
(-> Expression Expression)
(variant +1 true))
(def: #export left
(-> Expression Expression)
(variant +0 false))
(def: #export right
(-> Expression Expression)
(variant +1 true))
(type: Runtime Expression)
(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 (format prefix "__" (lang.normalize-name name))
$runtime (` (_.var (~ (code.text runtime))))
@runtime (` (@@ (~ $runtime)))
argsC+ (list/map code.local-symbol args)
argsLC+ (list/map (|>> lang.normalize-name (format "LRV__") code.text (~) (_.var) (`))
args)
declaration (` ((~ (code.local-symbol name))
(~+ argsC+)))
type (` (-> (~+ (list.repeat (list.size argsC+) (` _.Expression)))
_.Expression))]
(wrap (list (` (def: (~' #export) (~ declaration)
(~ type)
(~ (case argsC+
#.Nil
@runtime
_
(` (_.$apply (~ @runtime) (list (~+ argsC+))))))))
(` (def: (~ implementation)
_.Expression
(~ (case argsC+
#.Nil
(` (_.defparameter (~ $runtime) (~ definition)))
_
(` (let [(~+ (|> (list.zip2 argsC+ argsLC+)
(list/map (function (_ [left right])
(list left right)))
list/join))]
(_.defun (~ $runtime) (list (~+ argsLC+))
(~ definition))))))))))))
(syntax: #export (with-vars {vars (s.tuple (p.many s.local-symbol))}
body)
(wrap (list (` (let [(~+ (|> vars
(list/map (function (_ var)
(list (code.local-symbol var)
(` (_.var (~ (code.text (format "LRV__" (lang.normalize-name var)))))))))
list/join))]
(~ body))))))
(runtime: (lux//try op)
(with-vars [error]
(_.handler-case
(list [(_.bool true) error
(..left (_.format/3 _.nil (_.string "~A") (@@ error)))])
(..right (_.funcall (list ..unit) (@@ op))))))
(runtime: (lux//program-args program-args)
(with-vars [loop input output]
(_.labels (list [loop [(_.poly (list input output))
(_.if (_.null (@@ input))
(@@ output)
(_.funcall (list (_.cdr (@@ input))
(..some (_.vector (list (_.car (@@ input)) (@@ output)))))
(_.function (@@ loop))))]])
(_.funcall (list (_.reverse (@@ program-args))
..none)
(_.function (@@ loop))))))
(def: runtime//lux
Runtime
(_.progn (list @@lux//try
@@lux//program-args)))
(def: minimum-index-length
(-> Expression Expression)
(|>> (_.+ (_.int 1))))
(def: product-element
(-> Expression Expression Expression)
_.svref)
(def: (product-tail product)
(-> Expression Expression)
(_.svref product (|> (_.length product) (_.- (_.int 1)))))
(def: (updated-index min-length product)
(-> Expression Expression Expression)
(|> min-length (_.- (_.length product))))
(runtime: (product//left product index)
(with-vars [$index_min_length]
(_.let (list [$index_min_length (minimum-index-length (@@ index))])
(_.if (|> (_.length (@@ product)) (_.> (@@ $index_min_length)))
## No need for recursion
(product-element (@@ product) (@@ index))
## Needs recursion
(product//left (product-tail (@@ product))
(updated-index (@@ $index_min_length) (@@ product)))))))
(runtime: (product//right product index)
(with-vars [$index_min_length $product_length]
(_.let (list [$index_min_length (minimum-index-length (@@ index))]
[$product_length (_.length (@@ product))])
(<| (_.if (|> (@@ $product_length) (_.= (@@ $index_min_length)))
## Last element.
(product-element (@@ product) (@@ index)))
(_.if (|> (@@ $product_length) (_.< (@@ $index_min_length)))
## Needs recursion
(product//right (product-tail (@@ product))
(updated-index (@@ $index_min_length) (@@ product))))
## Must slice
(_.subseq/3 (@@ product) (@@ index) (@@ $product_length))))))
(runtime: (sum//get sum wanted_tag wants_last)
(with-vars [variant-tag sum-tag sum-flag sum-value]
(let [no-match _.nil
is-last? (|> (@@ sum-flag) (_.equal (_.string "")))
test-recursion (_.if is-last?
## Must recurse.
(sum//get (@@ sum-value)
(|> (@@ wanted_tag) (_.- (@@ sum-tag)))
(@@ wants_last))
no-match)]
(<| (_.destructuring-bind [(_.poly (list variant-tag sum-tag sum-flag sum-value))
(@@ sum)])
(_.if (|> (@@ wanted_tag) (_.= (@@ sum-tag)))
(_.if (|> (@@ sum-flag) (_.equal (@@ wants_last)))
(@@ sum-value)
test-recursion))
(_.if (|> (@@ wanted_tag) (_.> (@@ sum-tag)))
test-recursion)
(_.if (_.and (list (|> (@@ wants_last) (_.equal (_.string "")))
(|> (@@ wanted_tag) (_.< (@@ sum-tag)))))
(variant' (|> (@@ sum-tag) (_.- (@@ wanted_tag))) (@@ sum-flag) (@@ sum-value)))
no-match))))
(def: runtime//adt
Runtime
(_.progn (list @@product//left
@@product//right
@@sum//get)))
(runtime: (bit//logical-right-shift shift input)
(_.if (_.= (_.int 0) (@@ shift))
(@@ input)
(|> (@@ input)
(_.ash (_.* (_.int -1) (@@ shift)))
(_.logand (_.int (hex "7FFFFFFFFFFFFFFF"))))))
(def: runtime//bit
Runtime
(_.progn (list @@bit//logical-right-shift)))
(do-template [<name> <top-cmp>]
[(def: (<name> top value)
(-> Expression Expression Expression)
(_.and (list (|> value (_.>= (_.int 0)))
(|> value (<top-cmp> top)))))]
[within? _.<]
[up-to? _.<=]
)
(runtime: (text//char idx text)
(_.if (|> (@@ idx) (within? (_.length (@@ text))))
(..some (_.char-int/1 (_.char/2 (@@ text) (@@ idx))))
..none))
(runtime: (text//clip from to text)
(_.if (_.and (list (|> (@@ to) (within? (_.length (@@ text))))
(|> (@@ from) (up-to? (@@ to)))))
(..some (_.subseq/3 (@@ text) (@@ from) (@@ to)))
..none))
(runtime: (text//index reference start space)
(with-vars [index]
(_.let (list [index (_.search/start2 (@@ reference) (@@ space) (@@ start))])
(_.if (@@ index)
(..some (@@ index))
..none))))
(def: runtime//text
Runtime
(_.progn (list @@text//index
@@text//clip
@@text//char)))
(def: (check-index-out-of-bounds array idx body)
(-> Expression Expression Expression Expression)
(_.if (|> idx (_.<= (_.length array)))
body
(_.error (_.string "Array index out of bounds!"))))
(runtime: (array//get array idx)
(with-vars [temp]
(<| (check-index-out-of-bounds (@@ array) (@@ idx))
(_.let (list [temp (_.svref (@@ array) (@@ idx))])
(_.if (_.null (@@ temp))
..none
(..some (@@ temp)))))))
(runtime: (array//put array idx value)
(<| (check-index-out-of-bounds (@@ array) (@@ idx))
(_.progn
(list (_.setf! (_.svref (@@ array) (@@ idx)) (@@ value))
(@@ array)))))
(def: runtime//array
Runtime
(_.progn
(list @@array//get
@@array//put)))
(runtime: (atom//compare-and-swap atom old new)
(with-vars [temp]
(_.let (list [temp (_.svref (@@ atom) (_.int 0))])
(_.if (_.eq (@@ old) (@@ temp))
(_.progn
(list (_.setf! (_.svref (@@ atom) (_.int 0)) (@@ new))
(_.bool true)))
(_.bool false)))))
(def: runtime//atom
Runtime
@@atom//compare-and-swap)
(runtime: (box//write value box)
(_.progn
(list
(_.setf! (_.svref (@@ box) (_.int 0)) (@@ value))
..unit)))
(def: runtime//box
Runtime
(_.progn (list @@box//write)))
(runtime: (io//exit code)
(_.progn
(list (_.conditional+ (list "sbcl")
(_.$apply (_.global "sb-ext:quit") (list (@@ code))))
(_.conditional+ (list "clisp")
(_.$apply (_.global "ext:exit") (list (@@ code))))
(_.conditional+ (list "ccl")
(_.$apply (_.global "ccl:quit") (list (@@ code))))
(_.conditional+ (list "allegro")
(_.$apply (_.global "excl:exit") (list (@@ code))))
(_.$apply (_.global "cl-user::quit") (list (@@ code))))))
(runtime: (io//current-time _)
(|> _.get-universal-time
(_.* (_.int 1_000))))
(def: runtime//io
(_.progn (list @@io//exit
@@io//current-time)))
(def: process//incoming
SVar
(_.var (lang.normalize-name "process//incoming")))
(runtime: (process//loop _)
(_.if (_.not (_.null (@@ process//incoming)))
(with-vars [queue process]
(_.let (list [queue (@@ process//incoming)])
(_.progn (list (_.setq! process//incoming (_.list (list)))
(_.map/3 _.nil
(_.lambda (_.poly (list process))
(_.funcall (list ..unit) (@@ process)))
(@@ queue))
(process//loop ..unit)))))
..unit))
(runtime: (process//schedule milli-seconds procedure)
(_.progn
(list
(_.if (_.= (_.int 0) (@@ milli-seconds))
(_.setq! process//incoming (_.cons (@@ procedure) (@@ process//incoming)))
(with-vars [start scheduled now diff _ignored]
(_.let (list [start (io//current-time ..unit)])
(_.labels (list [scheduled [(_.poly+ (list) _ignored)
(_.let (list [now (io//current-time ..unit)]
[diff (|> (@@ now) (_.- (@@ start)))])
(_.if (|> (@@ diff) (_.>= (@@ milli-seconds)))
(_.funcall (list ..unit) (@@ procedure))
(process//schedule (|> (@@ milli-seconds) (_.- (@@ diff)))
(_.function (@@ scheduled)))))]])
(_.setq! process//incoming (_.cons (_.function (@@ scheduled))
(@@ process//incoming)))))))
..unit)))
(def: runtime//process
Runtime
(_.progn (list (_.defparameter process//incoming (_.list (list)))
@@process//loop
@@process//schedule)))
(def: runtime
Runtime
(_.progn (list runtime//lux
runtime//bit
runtime//adt
runtime//text
runtime//array
runtime//atom
runtime//box
runtime//io
runtime//process))
)
(def: #export artifact Text (format prefix //.file-extension))
(def: #export translate
(Meta (Process Any))
(do macro.Monad<Meta>
[_ //.init-module-buffer
_ (//.save runtime)]
(//.save-module! artifact)))
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