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|
(.require
[library
[lux (.except)
[abstract
["[0]" monad (.only Monad do)
["[0]" indexed]]]
[control
["<>" parser]
["[0]" maybe]
["[0]" exception (.only Exception)]]
[data
[text
["%" \\format (.only format)]]
[collection
["[0]" set]
["[0]" sequence (.only Sequence)]
["[0]" list (.use "[1]#[0]" functor mix)]]]
[math
[number
["n" nat]]]
["[0]" meta (.only)
["[0]" code
["<[1]>" \\parser (.only Parser)]]
["[0]" macro (.only)
[syntax (.only syntax)]]]]]
[//
["[0]" nominal (.except def)]])
(type .public (Procedure ! input output value)
(-> input (! [output value])))
(type .public (Linear ! value)
(All (_ keys)
(Procedure ! keys keys value)))
(type .public (Affine ! permissions value)
(All (_ keys)
(Procedure ! keys [permissions keys] value)))
(type .public (Relevant ! permissions value)
(All (_ keys)
(Procedure ! [permissions keys] keys value)))
(def .public (monad monad)
(All (_ !) (-> (Monad !) (indexed.Monad (Procedure !))))
(implementation
(def (in value)
(function (_ keys)
(at monad in [keys value])))
(def (then f input)
(function (_ keysI)
(do monad
[[keysT value] (input keysI)]
((f value) keysT))))))
(def .public (run! monad procedure)
(All (_ ! v) (-> (Monad !) (Linear ! v) (! v)))
(do monad
[[_ output] (procedure [])]
(in output)))
(def .public (lifted monad procedure)
(All (_ ! v) (-> (Monad !) (! v) (Linear ! v)))
(function (_ keys)
(do monad
[output procedure]
(in [keys output]))))
(nominal.def .public Ordered Any)
(nominal.def .public Commutative Any)
(nominal.def .public (Key mode key)
Any
(with_template [<name> <mode>]
[(def <name>
(Ex (_ k) (-> Any (Key <mode> k)))
(|>> abstraction))]
[ordered_key Ordered]
[commutative_key Commutative]
))
(nominal.def .public (Res key value)
value
(with_template [<name> <mode> <key>]
[(def .public (<name> monad value)
(All (_ ! v) (Ex (_ k) (-> (Monad !) v (Affine ! (Key <mode> k) (Res k v)))))
(function (_ keys)
(at monad in [[(<key> []) keys] (abstraction value)])))]
[ordered Ordered ..ordered_key]
[commutative Commutative ..commutative_key]
)
(def .public (read monad resource)
(All (_ ! v k m)
(-> (Monad !) (Res k v) (Relevant ! (Key m k) v)))
(function (_ [key keys])
(at monad in [keys (representation resource)])))
)
(exception.def .public (index_cannot_be_repeated index)
(Exception Nat)
(exception.report
(list ["Index" (%.nat index)])))
(exception.def .public amount_cannot_be_zero)
(def indices
(Parser (List Nat))
(<code>.tuple (loop (again [seen (set.empty n.hash)])
(do [! <>.monad]
[done? <code>.end?]
(if done?
(in (list))
(do !
[head <code>.nat
_ (<>.assertion (exception.error ..index_cannot_be_repeated head)
(not (set.member? seen head)))
tail (again (set.has head seen))]
(in (list.partial head tail))))))))
(def (no_op monad)
(All (_ m) (-> (Monad m) (Linear m Any)))
(function (_ context)
(at monad in [context []])))
(def .public exchange
(syntax (_ [swaps ..indices])
(macro.with_symbols [g!_ g!context g!!]
(when swaps
{.#End}
(in (list (` ..no_op)))
{.#Item head tail}
(do [! meta.monad]
[.let [max_idx (list#mix n.max head tail)]
g!inputs (<| (monad.all !) (list.repeated (++ max_idx)) (macro.symbol "input"))
.let [g!outputs (|> (monad.mix maybe.monad
(function (_ from to)
(do maybe.monad
[input (list.item from g!inputs)]
(in (sequence.suffix input to))))
(is (Sequence Code) sequence.empty)
swaps)
maybe.trusted
sequence.list)
g!inputsT+ (list#each (|>> (,) (..Key ..Commutative) (`)) g!inputs)
g!outputsT+ (list#each (|>> (,) (..Key ..Commutative) (`)) g!outputs)]]
(in (list (` (is (All ((, g!_) (, g!!) (,* g!inputs) (, g!context))
(-> (monad.Monad (, g!!))
(Procedure (, g!!)
[(,* g!inputsT+) (, g!context)]
[(,* g!outputsT+) (, g!context)]
.Any)))
(function ((, g!_) (, g!!) [(,* g!inputs) (, g!context)])
(at (, g!!) (,' in) [[(,* g!outputs) (, g!context)] []])))))))))))
(def amount
(Parser Nat)
(do <>.monad
[raw <code>.nat
_ (<>.assertion (exception.error ..amount_cannot_be_zero [])
(n.> 0 raw))]
(in raw)))
(with_template [<name> <from> <to>]
[(def .public <name>
(syntax (_ [amount ..amount])
(macro.with_symbols [g!_ g!context g!!]
(do [! meta.monad]
[g!keys (|> (macro.symbol "keys")
(list.repeated amount)
(monad.all !))]
(in (list (` (is (All ((, g!_) (, g!!) (,* g!keys) (, g!context))
(-> (monad.Monad (, g!!))
(Procedure (, g!!)
[<from> (, g!context)]
[<to> (, g!context)]
.Any)))
(function ((, g!_) (, g!!) [<from> (, g!context)])
(at (, g!!) (,' in) [[<to> (, g!context)] []]))))))))))]
[group (,* g!keys) [(,* g!keys)]]
[un_group [(,* g!keys)] (,* g!keys)]
)
|
