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|
(.using
[library
[lux {"-" Alias if loop}
["[0]" meta]
[abstract
["[0]" monad]]
[control
["[0]" maybe ("[1]#[0]" monad)]]
[data
["[0]" text
["%" format {"+" format}]]
[collection
["[0]" list ("[1]#[0]" mix functor)]]]
["[0]" macro {"+" with_symbols}
["[0]" code]
["[0]" template]
[syntax {"+" syntax:}
["|[0]|" export]]]
[math
[number
["n" nat]
["i" int]
["r" rev]
["f" frac]]]]]
[//
["<>" parser ("[1]#[0]" monad)
["<[0]>" code {"+" Parser}]]])
(type: Alias
[Text Code])
(type: Stack
(Record
[#bottom (Maybe Code)
#top (List Code)]))
(def: aliases^
(Parser (List Alias))
(|> (<>.and <code>.local_symbol <code>.any)
<>.some
<code>.tuple))
(def: top^
(Parser (List Code))
(<code>.tuple (<>.some <code>.any)))
(def: bottom^
(Parser Code)
(<code>.not ..top^))
(def: stack^
(Parser Stack)
(<>.either (<>.and (<>.maybe bottom^)
..top^)
(<>.and (<>#each (|>> {.#Some}) bottom^)
(<>#in (list)))))
(def: (stack_mix tops bottom)
(-> (List Code) Code Code)
(list#mix (function (_ top bottom)
(` [(~ bottom) (~ top)]))
bottom
tops))
(def: (singleton expander)
(-> (Meta (List Code)) (Meta Code))
(monad.do meta.monad
[expansion expander]
(case expansion
{.#Item singleton {.#End}}
(in singleton)
_
(meta.failure (format "Cannot expand to more than a single AST/Code node:" text.new_line
(|> expansion (list#each %.code) (text.interposed " ")))))))
(def: signature^
(Parser [(List Alias) Stack Stack])
(<>.either ($_ <>.and aliases^ stack^ stack^)
($_ <>.and (<>#in (list)) stack^ stack^)))
(syntax: .public (=> [[aliases inputs outputs] signature^])
(let [de_alias (function (_ aliased)
(list#mix (function (_ [from to] pre)
(code.replaced (code.local_symbol from) to pre))
aliased
aliases))]
(case [(the #bottom inputs)
(the #bottom outputs)]
[{.#Some bottomI} {.#Some bottomO}]
(monad.do meta.monad
[inputC (singleton (macro.full_expansion (stack_mix (the #top inputs) bottomI)))
outputC (singleton (macro.full_expansion (stack_mix (the #top outputs) bottomO)))]
(in (list (` (-> (~ (de_alias inputC))
(~ (de_alias outputC)))))))
[?bottomI ?bottomO]
(with_symbols [g!stack]
(monad.do meta.monad
[inputC (singleton (macro.full_expansion (stack_mix (the #top inputs) (maybe.else g!stack ?bottomI))))
outputC (singleton (macro.full_expansion (stack_mix (the #top outputs) (maybe.else g!stack ?bottomO))))]
(with_symbols [g!_]
(in (list (` (All ((~ g!_) (~ g!stack))
(-> (~ (de_alias inputC))
(~ (de_alias outputC)))))))))))))
(def: begin!
Any
[])
(def: end!
(All (_ a) (-> [Any a] a))
(function (_ [_ top])
top))
(syntax: .public (||> [commands (<>.some <code>.any)])
(in (list (` (|> (~! ..begin!) (~+ commands) ((~! ..end!)))))))
(def: word
(Parser [Code Text Code (List Code)])
(|export|.parser
($_ <>.and
<code>.local_symbol
<code>.any
(<>.many <code>.any))))
(syntax: .public (word: [[export_policy name type commands] ..word])
(in (list (` (def: (~ export_policy) (~ (code.local_symbol name))
(~ type)
(|>> (~+ commands)))))))
(syntax: .public (apply [arity (<>.only (n.> 0) <code>.nat)])
(with_symbols [g!_ g!func g!stack g!output]
(monad.do [! meta.monad]
[g!inputs (|> (macro.symbol "input") (list.repeated arity) (monad.all !))]
(in (list (` (: (All ((~ g!_) (~+ g!inputs) (~ g!output))
(-> (-> (~+ g!inputs) (~ g!output))
(=> [(~+ g!inputs)] [(~ g!output)])))
(function ((~ g!_) (~ g!func))
(function ((~ g!_) (~ (stack_mix g!inputs g!stack)))
[(~ g!stack) ((~ g!func) (~+ g!inputs))])))))))))
(template [<arity>]
[(`` (def: .public (~~ (template.symbol ["apply/" <arity>]))
(..apply <arity>)))]
[1] [2] [3] [4]
[5] [6] [7] [8]
)
(def: .public (push x)
(All (_ a) (-> a (=> [] [a])))
(function (_ stack)
[stack x]))
(def: .public drop
(All (_ t) (=> [t] []))
(function (_ [stack top])
stack))
(def: .public nip
(All (_ _ a) (=> [_ a] [a]))
(function (_ [[stack _] top])
[stack top]))
(def: .public dup
(All (_ a) (=> [a] [a a]))
(function (_ [stack top])
[[stack top] top]))
(def: .public swap
(All (_ a b) (=> [a b] [b a]))
(function (_ [[stack l] r])
[[stack r] l]))
(def: .public rotL
(All (_ a b c) (=> [a b c] [b c a]))
(function (_ [[[stack a] b] c])
[[[stack b] c] a]))
(def: .public rotR
(All (_ a b c) (=> [a b c] [c a b]))
(function (_ [[[stack a] b] c])
[[[stack c] a] b]))
(def: .public &&
(All (_ a b) (=> [a b] [(Tuple a b)]))
(function (_ [[stack l] r])
[stack [l r]]))
(def: .public ||L
(All (_ a b) (=> [a] [(Or a b)]))
(function (_ [stack l])
[stack {0 #0 l}]))
(def: .public ||R
(All (_ a b) (=> [b] [(Or a b)]))
(function (_ [stack r])
[stack {0 #1 r}]))
(template [<input> <output> <word> <func>]
[(`` (def: .public <word>
(=> [<input> <input>] [<output>])
(function (_ [[stack subject] param])
[stack (<func> param subject)])))]
[Nat Nat n/+ n.+]
[Nat Nat n/- n.-]
[Nat Nat n/* n.*]
[Nat Nat n// n./]
[Nat Nat n/% n.%]
[Nat Bit n/= n.=]
[Nat Bit n/< n.<]
[Nat Bit n/<= n.<=]
[Nat Bit n/> n.>]
[Nat Bit n/>= n.>=]
[Int Int i/+ i.+]
[Int Int i/- i.-]
[Int Int i/* i.*]
[Int Int i// i./]
[Int Int i/% i.%]
[Int Bit i/= i.=]
[Int Bit i/< i.<]
[Int Bit i/<= i.<=]
[Int Bit i/> i.>]
[Int Bit i/>= i.>=]
[Rev Rev r/+ r.+]
[Rev Rev r/- r.-]
[Rev Rev r/* r.*]
[Rev Rev r// r./]
[Rev Rev r/% r.%]
[Rev Bit r/= r.=]
[Rev Bit r/< r.<]
[Rev Bit r/<= r.<=]
[Rev Bit r/> r.>]
[Rev Bit r/>= r.>=]
[Frac Frac f/+ f.+]
[Frac Frac f/- f.-]
[Frac Frac f/* f.*]
[Frac Frac f// f./]
[Frac Frac f/% f.%]
[Frac Bit f/= f.=]
[Frac Bit f/< f.<]
[Frac Bit f/<= f.<=]
[Frac Bit f/> f.>]
[Frac Bit f/>= f.>=]
)
(def: .public if
(All (_ ,,,0 ,,,1)
(=> [then (=> ,,,0 ,,,1)
else (=> ,,,0 ,,,1)]
,,,0 [Bit then else] ,,,1))
(function (_ [[[stack test] then] else])
(.if test
(then stack)
(else stack))))
(def: .public call
(All (_ ,,,0 ,,,1)
(=> [quote (=> ,,,0 ,,,1)]
,,,0 [quote] ,,,1))
(function (_ [stack quote])
(quote stack)))
(def: .public loop
(All (_ ,,,)
(=> [test (=> ,,, ,,, [Bit])]
,,, [test] ,,,))
(function (loop [stack pred])
(let [[stack' verdict] (pred stack)]
(.if verdict
(loop [stack' pred])
stack'))))
(def: .public dip
(All (_ ,,, a)
(=> ,,, [a (=> ,,, ,,,)]
,,, [a]))
(function (_ [[stack a] quote])
[(quote stack) a]))
(def: .public dip/2
(All (_ ,,, a b)
(=> ,,, [a b (=> ,,, ,,,)]
,,, [a b]))
(function (_ [[[stack a] b] quote])
[[(quote stack) a] b]))
(def: .public do
(All (_ ,,,0 ,,,1)
(=> [body (=> ,,,0 ,,,1)
pred (=> ,,,1 ,,,0 [Bit])]
,,,0 [pred body]
,,,1 [pred body]))
(function (_ [[stack pred] body])
[[(body stack) pred] body]))
(def: .public while
(All (_ ,,,0 ,,,1)
(=> [body (=> ,,,1 ,,,0)
pred (=> ,,,0 ,,,1 [Bit])]
,,,0 [pred body]
,,,1))
(function (while [[stack pred] body])
(let [[stack' verdict] (pred stack)]
(.if verdict
(while [[(body stack') pred] body])
stack'))))
(def: .public compose
(All (_ ,,,0 ,,, ,,,1)
(=> [(=> ,,,0 ,,,) (=> ,,, ,,,1)]
[(=> ,,,0 ,,,1)]))
(function (_ [[stack f] g])
[stack (|>> f g)]))
(def: .public partial
(All (_ ,,,0 ,,,1 a)
(=> ,,,0 [a (=> ,,,0 [a] ,,,1)]
,,,0 [(=> ,,,0 ,,,1)]))
(function (_ [[stack arg] quote])
[stack (|>> (push arg) quote)]))
(word: .public when
(All (_ ,,,)
(=> [body (=> ,,, ,,,)]
,,, [Bit body]
,,,))
swap
(push ..call)
(push ..drop)
if)
(word: .public ?
(All (_ a)
(=> [Bit a a] [a]))
rotL
(push ..drop)
(push ..nip)
if)
|
