Removed sessions for the moment.

They will be revisited in future work.

1 files changed, 0 insertions, 228 deletions

diff --git a/stdlib/source/lux/concurrency/session.lux b/stdlib/source/lux/concurrency/session.lux
deleted file mode 100644
index ac9f984d9..000000000
--- a/stdlib/source/lux/concurrency/session.lux
+++ /dev/null
@@ -1,228 +0,0 @@
-(.module:
-  [lux #*
-   [control
-    ["." monad (#+ do)]
-    ["p" parser]]
-   [data
-    ["." lazy (#+ Lazy)]
-    [text
-     format]
-    [collection
-     ["." list ("list/." Functor<List>)]]]
-   ["." io]
-   ["." type (#+ :share)]
-   ["." macro
-    ["." code]
-    ["s" syntax (#+ syntax:)
-     [common
-      ["." reader]
-      ["." writer]]]]]
-  [//
-   ["." promise (#+ Promise)]])
-
-(def: counterpart-doc
-  (-> Name Code)
-  (|>> %name (format "The session/type counterpart to ") code.text))
-
-## Session
-(type: #export Session
-  {#.doc (doc "A pair of types, for 'me' and 'you'."
-              "They describe each side in a session protocol.")}
-  [Type Type])
-
-(def: #export ($session [mine yours])
-  {#.doc (doc "Create an actual type from a session.")}
-  (-> Session Type)
-  (type [mine yours]))
-
-(def: #export <<
-  {#.doc (doc "Create an actual type from a session.")}
-  $session)
-
-(do-template [<name> <alias> <side> <doc>]
-  [(def: #export (<name> [mine yours])
-     {#.doc (code.text (format "'" <doc> "' side of the session."))}
-     (-> Session Type)
-     <side>)
-
-   (def: #export <alias> <name>)]
-
-  [$my   +<< mine  "My"]
-  [$your -<< yours "Your"]
-  )
-
-## End
-(type: #export End
-  {#.doc (doc "Represents the end of a protocol.")}
-  [])
-
-(def: #export end
-  {#.doc (doc "The last step in a session.")}
-  (Lazy [End End])
-  (lazy.freeze [[] []]))
-
-(def: #export $end
-  {#.doc (doc (counterpart-doc (name-of ..end)))}
-  Session
-  [End End])
-
-(def: #export >>
-  {#.doc (doc (counterpart-doc (name-of ..end)))}
-  $end)
-
-## Read (Receive) / Write (Send)
-(type: #export (Read value next)
-  {#.doc (doc "A reading step.")}
-  (-> [] (Promise [value next])))
-
-(type: #export (Write value next)
-  {#.doc (doc "A writing step.")}
-  (-> value (Promise next)))
-
-(def: #export (receive session)
-  {#.doc (doc "A Read step for 'me', and a Write step for 'you'.")}
-  (All [value mine yours]
-    (-> (Lazy [mine yours])
-        (Lazy [(Read value mine) (Write value yours)])))
-  (lazy.freeze (let [channel (promise.promise #.None)]
-                 [(function (_ _)
-                    (let [[mine yours] (lazy.thaw session)]
-                      (do promise.Monad<Promise>
-                        [value channel]
-                        (wrap [value mine]))))
-                  (function (_ value)
-                    (let [[mine yours] (lazy.thaw session)]
-                      (exec (io.run (promise.resolve value channel))
-                        (promise.promise (#.Some yours)))))])))
-
-(def: #export (send session)
-  {#.doc (doc "A Write step for 'me', and a Read step for 'you'.")}
-  (All [value mine yours]
-    (-> (Lazy [mine yours])
-        (Lazy [(Write value mine) (Read value yours)])))
-  (lazy.freeze (let [channel (promise.promise #.None)]
-                 [(function (_ value)
-                    (let [[mine yours] (lazy.thaw session)]
-                      (exec (io.run (promise.resolve value channel))
-                        (promise.promise (#.Some mine)))))
-                  (function (_ _)
-                    (let [[mine yours] (lazy.thaw session)]
-                      (do promise.Monad<Promise>
-                        [value channel]
-                        (wrap [value yours]))))])))
-
-(do-template [<name> <alias> <me> <you> <counterpart>]
-  [(def: #export (<name> value [mine yours])
-     {#.doc (doc (counterpart-doc (name-of <counterpart>)))}
-     (-> Type Session Session)
-     [(type (<me> value mine)) (type (<you> value yours))])
-
-   (def: #export <alias>
-     {#.doc (doc <doc>)}
-     <name>)]
-
-  [$receive ?? Read  Write ..receive]
-  [$send    !! Write Read  ..send]
-  )
-
-## Fork / Join
-(type: #export (Fork left right)
-  {#.doc (doc "A forking step, that allows choosing which path to take.")}
-  (All [next]
-    (-> (| (-> left next)
-           (-> right next))
-        (Promise next))))
-
-(type: #export (Join left right)
-  {#.doc (doc "A joining step, which communicates which path was taken.")}
-  (-> [] (Promise (| left right))))
-
-(def: #export (fork left right)
-  {#.doc (doc "A Fork step for 'me', and a Join step for 'you'.")}
-  (All [myL yourL myR yourR]
-    (-> (Lazy [myL yourL]) (Lazy [myR yourR])
-        (Lazy [(Fork myL myR) (Join yourL yourR)])))
-  (lazy.freeze (let [channel (: (Promise Bit)
-                                (promise.promise #.None))]
-                 [(function (_ signal)
-                    (let [[myL yourL] (lazy.thaw left)
-                          [myR yourR] (lazy.thaw right)]
-                      (case signal
-                        (#.Left go)
-                        (exec (io.run (promise.resolve #0 channel))
-                          (promise.promise (#.Some (go myL))))
-                        
-                        (#.Right go)
-                        (exec (io.run (promise.resolve #1 channel))
-                          (promise.promise (#.Some (go myR)))))))
-                  (function (_ _)
-                    (let [[myL yourL] (lazy.thaw left)
-                          [myR yourR] (lazy.thaw right)]
-                      (do promise.Monad<Promise>
-                        [choice channel]
-                        (wrap (case choice
-                                #0 (#.Left yourL)
-                                #1 (#.Right yourR))))))])))
-
-(def: #export (join left right)
-  {#.doc (doc "A Join step for 'me', and a Fork step for 'you'.")}
-  (All [myL yourL myR yourR]
-    (-> (Lazy [myL yourL]) (Lazy [myR yourR])
-        (Lazy [(Join myL myR) (Fork yourL yourR)])))
-  (lazy.freeze (let [channel (: (Promise Bit)
-                                (promise.promise #.None))]
-                 [(function (_ _)
-                    (let [[myL yourL] (lazy.thaw left)
-                          [myR yourR] (lazy.thaw right)]
-                      (do promise.Monad<Promise>
-                        [choice channel]
-                        (wrap (case choice
-                                #0 (#.Left myL)
-                                #1 (#.Right myR))))))
-                  (function (_ signal)
-                    (let [[myL yourL] (lazy.thaw left)
-                          [myR yourR] (lazy.thaw right)]
-                      (case signal
-                        (#.Left go)
-                        (exec (io.run (promise.resolve #0 channel))
-                          (promise.promise (#.Some (go yourL))))
-                        
-                        (#.Right go)
-                        (exec (io.run (promise.resolve #1 channel))
-                          (promise.promise (#.Some (go yourR)))))))])))
-
-(do-template [<name> <alias> <+> <-> <counterpart>]
-  [(def: #export (<name> [myL yourL] [myR yourR])
-     {#.doc (doc (counterpart-doc (name-of <counterpart>)))}
-     (-> Session Session Session)
-     [(type (<+> myL myR)) (type (<-> yourL yourR))])
-
-   (def: #export <alias>
-     {#.doc (doc (counterpart-doc (name-of <counterpart>)))}
-     <name>)]
-
-  [$join /\ Join Fork ..join]
-  [$fork \/ Fork Join ..fork]
-  )
-
-(def: #export ($rec scope)
-  (-> (-> Session Session)
-      Session)
-  (case (type (All $recur [$_]
-                (:~ ($session (scope [(#.Apply $_ $recur)
-                                      (#.Apply $_ $recur)])))))
-    (^multi (#.UnivQ _env $scope)
-            [(type.flatten-tuple $scope)
-             (^ (list mine yours))])
-    [(#.Apply Any (#.UnivQ _env mine))
-     (#.Apply Any (#.UnivQ _env yours))]
-
-    _
-    (undefined)))
-
-(def: #export (rec scope)
-  (All [session]
-    (-> (-> (Lazy session)
-            (Lazy session))
-        (Lazy session)))
-  (lazy.freeze (lazy.thaw (scope (rec scope)))))