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|
(.module:
[lux #*
[abstract
[monad (#+ do)]]
[control
["." function]
["p" parser]]
[data
[number (#+ hex)
["." i64]]
["." text
format]
[collection
["." list ("#;." functor)]]]
["." macro
["." code]
["s" syntax (#+ syntax:)]]
[host
["_" js (#+ Expression Var Computation Statement)]]]
["." ///
["//." //
[//
["/////." name]
["." synthesis]]]]
)
(template [<name> <base>]
[(type: #export <name>
(<base> Var Expression Statement))]
[Operation ///.Operation]
[Phase ///.Phase]
[Handler ///.Handler]
[Bundle ///.Bundle]
)
(type: #export (Generator i)
(-> i Phase (Operation Expression)))
(def: prefix Text "LuxRuntime")
(def: #export high
(-> (I64 Any) (I64 Any))
(i64.logic-right-shift 32))
(def: #export low
(-> (I64 Any) (I64 Any))
(let [mask (dec (i64.left-shift 32 1))]
(|>> (i64.and mask))))
(def: #export variant-tag-field "_lux_tag")
(def: #export variant-flag-field "_lux_flag")
(def: #export variant-value-field "_lux_value")
(def: #export unit Computation (_.string synthesis.unit))
(def: #export (flag value)
(-> Bit Computation)
(if value
(_.string "")
_.null))
(def: #export (variant tag last? value)
(-> Expression Expression Expression Computation)
(_.object (list [..variant-tag-field tag]
[..variant-flag-field last?]
[..variant-value-field value])))
(def: none
Computation
(..variant (_.i32 +0) (flag #0) unit))
(def: some
(-> Expression Computation)
(..variant (_.i32 +1) (flag #1)))
(def: left
(-> Expression Computation)
(..variant (_.i32 +0) (flag #0)))
(def: right
(-> Expression Computation)
(..variant (_.i32 +1) (flag #1)))
(def: variable
(-> Text Var)
(|>> /////name.normalize
_.var))
(def: runtime-name
(-> Text Var)
(|>> /////name.normalize
(format ..prefix "$")
_.var))
(def: (feature name definition)
(-> Var (-> Var Expression) Statement)
(_.define name (definition name)))
(syntax: #export (with-vars {vars (s.tuple (p.some s.local-identifier))}
body)
(wrap (list (` (let [(~+ (|> vars
(list;map (function (_ var)
(list (code.local-identifier var)
(` (_.var (~ (code.text (/////name.normalize var))))))))
list.concat))]
(~ body))))))
(syntax: (runtime: {declaration (p.or s.local-identifier
(s.form (p.and s.local-identifier
(p.some s.local-identifier))))}
code)
(case declaration
(#.Left name)
(macro.with-gensyms [g!_]
(let [nameC (code.local-identifier name)
code-nameC (code.local-identifier (format "@" name))
runtime-nameC (` (runtime-name (~ (code.text name))))]
(wrap (list (` (def: #export (~ nameC) Var (~ runtime-nameC)))
(` (def: (~ code-nameC)
Statement
(..feature (~ runtime-nameC)
(function ((~ g!_) (~ nameC))
(~ code)))))))))
(#.Right [name inputs])
(macro.with-gensyms [g!_]
(let [nameC (code.local-identifier name)
code-nameC (code.local-identifier (format "@" name))
runtime-nameC (` (runtime-name (~ (code.text name))))
inputsC (list;map code.local-identifier inputs)
inputs-typesC (list;map (function.constant (` _.Expression)) inputs)]
(wrap (list (` (def: #export ((~ nameC) (~+ inputsC))
(-> (~+ inputs-typesC) Computation)
(_.apply/* (~ runtime-nameC) (list (~+ inputsC)))))
(` (def: (~ code-nameC)
Statement
(..feature (~ runtime-nameC)
(function ((~ g!_) (~ g!_))
(..with-vars [(~+ inputsC)]
(_.function (~ g!_) (list (~+ inputsC))
(~ code)))))))))))))
(runtime: (lux//try op)
(with-vars [ex]
(_.try (_.return (_.apply/1 op ..unit))
[ex (_.return (|> ex (_.do "toString" (list))))])))
(def: length
(-> Expression Computation)
(_.the "length"))
(def: last-index
(-> Expression Computation)
(|>> ..length (_.- (_.i32 +1))))
(def: (last-element tuple)
(_.at (..last-index tuple)
tuple))
(runtime: (lux//program-args inputs)
(with-vars [output idx]
($_ _.then
(_.define output ..none)
(_.for idx
(..last-index inputs)
(_.>= (_.i32 +0) idx)
(_.-- idx)
(_.set output (..some (_.array (list (_.at idx inputs)
output)))))
(_.return output))))
(def: runtime//lux
Statement
($_ _.then
@lux//try
@lux//program-args
))
(runtime: (tuple//left lefts tuple)
(with-vars [last-index-right]
($_ _.then
(_.define last-index-right (..last-index tuple))
(_.if (_.> lefts last-index-right)
## No need for recursion
(_.return (_.at lefts tuple))
## Needs recursion
(_.return (tuple//left (_.- last-index-right lefts)
(_.at last-index-right tuple)))))))
(runtime: (tuple//right lefts tuple)
(with-vars [last-index-right right-index]
($_ _.then
(_.define last-index-right (..last-index tuple))
(_.define right-index (_.+ (_.i32 +1) lefts))
(_.cond (list [(_.= right-index last-index-right)
(_.return (_.at right-index tuple))]
[(_.> right-index last-index-right)
## Needs recursion.
(_.return (tuple//right (_.- last-index-right lefts)
(_.at last-index-right tuple)))])
(_.return (_.do "slice" (list right-index) tuple)))
)))
(runtime: (sum//get sum wants-last wanted-tag)
(let [no-match! (_.return _.null)
sum-tag (|> sum (_.the ..variant-tag-field))
sum-flag (|> sum (_.the ..variant-flag-field))
sum-value (|> sum (_.the ..variant-value-field))
is-last? (_.= ..unit sum-flag)
extact-match! (_.return sum-value)
test-recursion! (_.if is-last?
## Must recurse.
(_.return (sum//get sum-value (_.- sum-tag wanted-tag) wants-last))
no-match!)
extrac-sub-variant! (_.return (..variant (_.- wanted-tag sum-tag) sum-flag sum-value))]
(_.cond (list [(_.= wanted-tag sum-tag)
(_.if (_.= wants-last sum-flag)
extact-match!
test-recursion!)]
[(_.< wanted-tag sum-tag)
test-recursion!]
[(_.and (_.> wanted-tag sum-tag)
(_.= ..unit wants-last))
extrac-sub-variant!])
no-match!)))
(def: runtime//structure
Statement
($_ _.then
@tuple//left
@tuple//right
@sum//get
))
(def: #export i64-high-field Text "_lux_high")
(def: #export i64-low-field Text "_lux_low")
(runtime: (i64//new high low)
(_.return (_.object (list [..i64-high-field high]
[..i64-low-field low]))))
(runtime: i64//2^16
(_.left-shift (_.i32 +16) (_.i32 +1)))
(runtime: i64//2^32
(_.* i64//2^16 i64//2^16))
(runtime: i64//2^64
(_.* i64//2^32 i64//2^32))
(runtime: i64//2^63
(|> i64//2^64 (_./ (_.i32 +2))))
(runtime: (i64//unsigned-low i64)
(_.return (_.? (|> i64 (_.the ..i64-low-field) (_.>= (_.i32 +0)))
(|> i64 (_.the ..i64-low-field))
(|> i64 (_.the ..i64-low-field) (_.+ i64//2^32)))))
(runtime: (i64//to-number i64)
(_.return (|> i64 (_.the ..i64-high-field) (_.* i64//2^32)
(_.+ (i64//unsigned-low i64)))))
(runtime: i64//zero
(i64//new (_.i32 +0) (_.i32 +0)))
(runtime: i64//min
(i64//new (_.i32 (hex "+80000000")) (_.i32 +0)))
(runtime: i64//max
(i64//new (_.i32 (hex "+7FFFFFFF")) (_.i32 (hex "+FFFFFFFF"))))
(runtime: i64//one
(i64//new (_.i32 +0) (_.i32 +1)))
(runtime: (i64//= reference sample)
(_.return (_.and (_.= (_.the ..i64-high-field reference)
(_.the ..i64-high-field sample))
(_.= (_.the ..i64-low-field reference)
(_.the ..i64-low-field sample)))))
(runtime: (i64//+ parameter subject)
(let [up-16 (_.left-shift (_.i32 +16))
high-16 (_.logic-right-shift (_.i32 +16))
low-16 (_.bit-and (_.i32 (hex "+FFFF")))
hh (|>> (_.the ..i64-high-field) high-16)
hl (|>> (_.the ..i64-high-field) low-16)
lh (|>> (_.the ..i64-low-field) high-16)
ll (|>> (_.the ..i64-low-field) low-16)]
(with-vars [l48 l32 l16 l00
r48 r32 r16 r00
x48 x32 x16 x00]
($_ _.then
(_.define l48 (hh subject))
(_.define l32 (hl subject))
(_.define l16 (lh subject))
(_.define l00 (ll subject))
(_.define r48 (hh parameter))
(_.define r32 (hl parameter))
(_.define r16 (lh parameter))
(_.define r00 (ll parameter))
(_.define x00 (_.+ l00 r00))
(_.define x16 (high-16 x00))
(_.set x00 (low-16 x00))
(_.set x16 (|> x16 (_.+ l16) (_.+ r16)))
(_.define x32 (high-16 x16))
(_.set x16 (low-16 x16))
(_.set x32 (|> x32 (_.+ l32) (_.+ r32)))
(_.define x48 (|> (high-16 x32) (_.+ l48) (_.+ r48) low-16))
(_.set x32 (low-16 x32))
(_.return (i64//new (_.bit-or (up-16 x48) x32)
(_.bit-or (up-16 x16) x00)))
))))
(template [<name> <op>]
[(runtime: (<name> subject parameter)
(_.return (i64//new (<op> (_.the ..i64-high-field subject)
(_.the ..i64-high-field parameter))
(<op> (_.the ..i64-low-field subject)
(_.the ..i64-low-field parameter)))))]
[i64//xor _.bit-xor]
[i64//or _.bit-or]
[i64//and _.bit-and]
)
(runtime: (i64//not value)
(_.return (i64//new (_.bit-not (_.the ..i64-high-field value))
(_.bit-not (_.the ..i64-low-field value)))))
(runtime: (i64//negate value)
(_.if (i64//= i64//min value)
(_.return i64//min)
(_.return (i64//+ i64//one (i64//not value)))))
(runtime: i64//-one
(i64//negate i64//one))
(runtime: (i64//from-number value)
(_.cond (list [(_.not-a-number? value)
(_.return i64//zero)]
[(_.<= (_.negate i64//2^63) value)
(_.return i64//min)]
[(|> value (_.+ (_.i32 +1)) (_.>= i64//2^63))
(_.return i64//max)]
[(|> value (_.< (_.i32 +0)))
(_.return (|> value _.negate i64//from-number i64//negate))])
(_.return (i64//new (|> value (_./ i64//2^32) _.to-i32)
(|> value (_.% i64//2^32) _.to-i32)))))
(def: (cap-shift! shift)
(-> Var Statement)
(_.set shift (|> shift (_.bit-and (_.i32 +63)))))
(def: (no-shift! shift input)
(-> Var Var [Expression Statement])
[(|> shift (_.= (_.i32 +0)))
(_.return input)])
(def: small-shift?
(-> Var Expression)
(|>> (_.< (_.i32 +32))))
(runtime: (i64//left-shift input shift)
($_ _.then
(..cap-shift! shift)
(_.cond (list (..no-shift! shift input)
[(..small-shift? shift)
(let [high (_.bit-or (|> input (_.the ..i64-high-field) (_.left-shift shift))
(|> input (_.the ..i64-low-field) (_.logic-right-shift (_.- shift (_.i32 +32)))))
low (|> input (_.the ..i64-low-field) (_.left-shift shift))]
(_.return (i64//new high low)))])
(let [high (|> input (_.the ..i64-low-field) (_.left-shift (_.- (_.i32 +32) shift)))]
(_.return (i64//new high (_.i32 +0)))))))
(runtime: (i64//arithmetic-right-shift input shift)
($_ _.then
(..cap-shift! shift)
(_.cond (list (..no-shift! shift input)
[(..small-shift? shift)
(let [high (|> input (_.the ..i64-high-field) (_.arithmetic-right-shift shift))
low (|> input (_.the ..i64-low-field) (_.logic-right-shift shift)
(_.bit-or (|> input (_.the ..i64-high-field) (_.left-shift (_.- shift (_.i32 +32))))))]
(_.return (i64//new high low)))])
(let [high (_.? (|> input (_.the ..i64-high-field) (_.>= (_.i32 +0)))
(_.i32 +0)
(_.i32 -1))
low (|> input (_.the ..i64-high-field) (_.arithmetic-right-shift (_.- (_.i32 +32) shift)))]
(_.return (i64//new high low))))))
(runtime: (i64//logic-right-shift input shift)
($_ _.then
(..cap-shift! shift)
(_.cond (list (..no-shift! shift input)
[(..small-shift? shift)
(let [high (|> input (_.the ..i64-high-field) (_.logic-right-shift shift))
low (|> input (_.the ..i64-low-field) (_.logic-right-shift shift)
(_.bit-or (|> input (_.the ..i64-high-field) (_.left-shift (_.- shift (_.i32 +32))))))]
(_.return (i64//new high low)))]
[(|> shift (_.= (_.i32 +32)))
(_.return (i64//new (_.i32 +0) (|> input (_.the ..i64-high-field))))])
(_.return (i64//new (_.i32 +0)
(|> input (_.the ..i64-high-field) (_.logic-right-shift (_.- (_.i32 +32) shift))))))))
(def: runtime//bit
Statement
($_ _.then
@i64//and
@i64//or
@i64//xor
@i64//not
@i64//left-shift
@i64//arithmetic-right-shift
@i64//logic-right-shift
))
(runtime: (i64//- parameter subject)
(_.return (i64//+ (i64//negate parameter) subject)))
(runtime: (i64//* parameter subject)
(let [negative? (|>> (_.the ..i64-high-field) (_.< (_.i32 +0)))]
(_.cond (list [(negative? subject)
(_.if (negative? parameter)
## Both are negative
(_.return (i64//* (i64//negate parameter) (i64//negate subject)))
## Subject is negative
(_.return (i64//negate (i64//* parameter (i64//negate subject)))))]
[(negative? parameter)
## Parameter is negative
(_.return (i64//negate (i64//* (i64//negate parameter) subject)))])
## Both are positive
(let [up-16 (_.left-shift (_.i32 +16))
high-16 (_.logic-right-shift (_.i32 +16))
low-16 (_.bit-and (_.i32 (hex "+FFFF")))
hh (|>> (_.the ..i64-high-field) high-16)
hl (|>> (_.the ..i64-high-field) low-16)
lh (|>> (_.the ..i64-low-field) high-16)
ll (|>> (_.the ..i64-low-field) low-16)]
(with-vars [l48 l32 l16 l00
r48 r32 r16 r00
x48 x32 x16 x00]
($_ _.then
(_.define l48 (hh subject))
(_.define l32 (hl subject))
(_.define l16 (lh subject))
(_.define l00 (ll subject))
(_.define r48 (hh parameter))
(_.define r32 (hl parameter))
(_.define r16 (lh parameter))
(_.define r00 (ll parameter))
(_.define x00 (_.* l00 r00))
(_.define x16 (high-16 x00))
(_.set x00 (low-16 x00))
(_.set x16 (|> x16 (_.+ (_.* l16 r00))))
(_.define x32 (high-16 x16)) (_.set x16 (low-16 x16))
(_.set x16 (|> x16 (_.+ (_.* l00 r16))))
(_.set x32 (|> x32 (_.+ (high-16 x16)))) (_.set x16 (low-16 x16))
(_.set x32 (|> x32 (_.+ (_.* l32 r00))))
(_.define x48 (high-16 x32)) (_.set x32 (low-16 x32))
(_.set x32 (|> x32 (_.+ (_.* l16 r16))))
(_.set x48 (|> x48 (_.+ (high-16 x32)))) (_.set x32 (low-16 x32))
(_.set x32 (|> x32 (_.+ (_.* l00 r32))))
(_.set x48 (|> x48 (_.+ (high-16 x32)))) (_.set x32 (low-16 x32))
(_.set x48 (|> x48
(_.+ (_.* l48 r00))
(_.+ (_.* l32 r16))
(_.+ (_.* l16 r32))
(_.+ (_.* l00 r48))
low-16))
(_.return (i64//new (_.bit-or (up-16 x48) x32)
(_.bit-or (up-16 x16) x00)))
))))))
(runtime: (i64//< parameter subject)
(let [negative? (|>> (_.the ..i64-high-field) (_.< (_.i32 +0)))]
(with-vars [-subject? -parameter?]
($_ _.then
(_.define -subject? (negative? subject))
(_.define -parameter? (negative? parameter))
(_.cond (list [(_.and -subject? (_.not -parameter?))
(_.return _.true)]
[(_.and (_.not -subject?) -parameter?)
(_.return _.false)])
(_.return (negative? (i64//- parameter subject))))))))
(def: (i64//<= param subject)
(-> Expression Expression Expression)
(_.or (i64//< param subject)
(i64//= param subject)))
(runtime: (i64/// parameter subject)
(let [negative? (function (_ value)
(i64//< i64//zero value))
valid-division-check [(i64//= i64//zero parameter)
(_.throw (_.string "Cannot divide by zero!"))]
short-circuit-check [(i64//= i64//zero subject)
(_.return i64//zero)]]
(_.cond (list valid-division-check
short-circuit-check
[(i64//= i64//min subject)
(_.cond (list [(_.or (i64//= i64//one parameter)
(i64//= i64//-one parameter))
(_.return i64//min)]
[(i64//= i64//min parameter)
(_.return i64//one)])
(with-vars [approximation]
(let [subject/2 (i64//arithmetic-right-shift subject (_.i32 +1))]
($_ _.then
(_.define approximation (i64//left-shift (i64/// parameter
subject/2)
(_.i32 +1)))
(_.if (i64//= i64//zero approximation)
(_.return (_.? (negative? parameter)
i64//one
i64//-one))
(let [remainder (i64//- (i64//* approximation
parameter)
subject)]
(_.return (i64//+ (i64/// parameter
remainder)
approximation))))))))]
[(i64//= i64//min parameter)
(_.return i64//zero)]
[(negative? subject)
(_.return (_.? (negative? parameter)
(i64/// (i64//negate parameter)
(i64//negate subject))
(i64//negate (i64/// parameter
(i64//negate subject)))))]
[(negative? parameter)
(_.return (i64//negate (i64/// (i64//negate parameter) subject)))])
(with-vars [result remainder]
($_ _.then
(_.define result i64//zero)
(_.define remainder subject)
(_.while (i64//<= remainder parameter)
(with-vars [approximate approximate-result approximate-remainder log2 delta]
(let [approximate-result' (i64//from-number approximate)
approx-remainder (i64//* parameter approximate-result)]
($_ _.then
(_.define approximate (|> (i64//to-number remainder)
(_./ (i64//to-number parameter))
(_.apply/1 (_.var "Math.floor"))
(_.apply/2 (_.var "Math.max") (_.i32 +1))))
(_.define log2 (|> approximate
(_.apply/1 (_.var "Math.log"))
(_./ (_.var "Math.LN2"))
(_.apply/1 (_.var "Math.ceil"))))
(_.define delta (_.? (_.<= (_.i32 +48) log2)
(_.i32 +1)
(_.apply/2 (_.var "Math.pow")
(_.i32 +2)
(_.- (_.i32 +48)
log2))))
(_.define approximate-result approximate-result')
(_.define approximate-remainder approx-remainder)
(_.while (_.or (negative? approximate-remainder)
(i64//< approximate-remainder
remainder))
($_ _.then
(_.set approximate (_.- delta approximate))
(_.set approximate-result approximate-result')
(_.set approximate-remainder approx-remainder)))
(_.set result (i64//+ (_.? (i64//= i64//zero approximate-result)
i64//one
approximate-result)
result))
(_.set remainder (i64//- approximate-remainder remainder))))))
(_.return result)))
)))
(runtime: (i64//% parameter subject)
(let [flat (|> subject
(i64/// parameter)
(i64//* parameter))]
(_.return (i64//- flat subject))))
(def: runtime//i64
Statement
($_ _.then
@i64//2^16
@i64//2^32
@i64//2^64
@i64//2^63
@i64//unsigned-low
@i64//new
@i64//zero
@i64//min
@i64//max
@i64//one
@i64//=
@i64//+
@i64//negate
@i64//to-number
@i64//from-number
@i64//-
@i64//*
@i64//<
@i64///
@i64//%
runtime//bit
))
(runtime: (text//index start part text)
(with-vars [idx]
($_ _.then
(_.define idx (|> text (_.do "indexOf" (list part (i64//to-number start)))))
(_.if (_.= (_.i32 -1) idx)
(_.return ..none)
(_.return (..some (i64//from-number idx)))))))
(runtime: (text//clip start end text)
(_.return (|> text (_.do "substring" (list (_.the ..i64-low-field start)
(_.the ..i64-low-field end))))))
(runtime: (text//char idx text)
(with-vars [result]
($_ _.then
(_.define result (|> text (_.do "charCodeAt" (list (_.the ..i64-low-field idx)))))
(_.if (_.not-a-number? result)
(_.return ..none)
(_.return (..some (i64//from-number result)))))))
(def: runtime//text
Statement
($_ _.then
@text//index
@text//clip
@text//char
))
(runtime: (io//log message)
(let [console (_.var "console")
print (_.var "print")
end! (_.return ..unit)]
(_.cond (list [(|> console _.type-of (_.= (_.string "undefined")) _.not
(_.and (_.the "log" console)))
($_ _.then
(_.statement (|> console (_.do "log" (list message))))
end!)]
[(|> print _.type-of (_.= (_.string "undefined")) _.not)
($_ _.then
(_.statement (_.apply/1 print (_.apply/1 (_.var "JSON.stringify") message)))
end!)])
end!)))
(runtime: (io//error message)
(_.throw message))
(def: runtime//io
Statement
($_ _.then
@io//log
@io//error
))
(runtime: (js//get object field)
(with-vars [temp]
($_ _.then
(_.define temp (_.at field object))
(_.if (_.= _.undefined temp)
(_.return ..none)
(_.return (..some temp))))))
(runtime: (js//set object field input)
($_ _.then
(_.set (_.at field object) input)
(_.return object)))
(runtime: (js//delete object field)
($_ _.then
(_.delete (_.at field object))
(_.return object)))
(def: runtime//js
Statement
($_ _.then
@js//get
@js//set
@js//delete
))
(runtime: (array//read idx array)
(let [fail! (_.return ..none)]
(_.if (_.< (..length array) idx)
(with-vars [temp]
($_ _.then
(_.define temp (_.at idx array))
(_.if (_.= _.undefined temp)
fail!
(_.return (..some temp)))))
fail!)))
(runtime: (array//write idx value array)
(_.if (_.< (..length array) idx)
($_ _.then
(_.set (_.at idx array) value)
(_.return (..some array)))
(_.return ..none)))
(runtime: (array//delete idx array)
(_.if (_.< (..length array) idx)
($_ _.then
(_.delete (_.at idx array))
(_.return (..some array)))
(_.return ..none)))
(def: runtime//array
Statement
($_ _.then
@array//read
@array//write
@array//delete))
(def: runtime
Statement
($_ _.then
runtime//lux
runtime//structure
runtime//i64
runtime//text
runtime//io
runtime//js
runtime//array
))
(def: #export artifact Text prefix)
(def: #export generate
(Operation Any)
(///.with-buffer
(do ////.monad
[_ (///.save! ["" ..prefix] ($_ _.then
_.use-strict
..runtime))]
(///.save-buffer! ..artifact))))
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