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|
(.using
[library
[lux "*"
["@" target]
["[0]" ffi {"+" import:}]
[abstract
[monad {"+" do}]]
[control
["[0]" maybe]
["[0]" try {"+" Try} ("[1]#[0]" functor)]
["[0]" exception {"+" exception:}]
["[0]" io {"+" IO io} ("[1]#[0]" functor)]
[concurrency
["[0]" async {"+" Async} ("[1]#[0]" monad)]
["[0]" atom]]]
[data
["[0]" text {"+" Char}
["%" format {"+" format}]]]]])
(type: .public (Console !)
(Interface
(is (-> [] (! (Try Char)))
read)
(is (-> [] (! (Try Text)))
read_line)
(is (-> Text (! (Try Any)))
write)
(is (-> [] (! (Try Any)))
close)))
(def: .public (async console)
(-> (Console IO) (Console Async))
(`` (implementation
(~~ (template [<capability>]
[(def: <capability>
(|>> (# console <capability>) async.future))]
[read]
[read_line]
[write]
[close])))))
(exception: .public cannot_close)
(with_expansions [<jvm> (these (import: java/lang/String
"[1]::[0]")
(import: java/io/Console
"[1]::[0]"
(readLine [] "io" "try" java/lang/String))
(import: java/io/InputStream
"[1]::[0]"
(read [] "io" "try" int))
(import: java/io/PrintStream
"[1]::[0]"
(print [java/lang/String] "io" "try" void))
(import: java/lang/System
"[1]::[0]"
("static" console [] "io" "?" java/io/Console)
("static" in java/io/InputStream)
("static" out java/io/PrintStream))
(exception: .public cannot_open)
(def: .public default
(IO (Try (Console IO)))
(do io.monad
[?jvm_console (java/lang/System::console)]
(case ?jvm_console
{.#None}
(in (exception.except ..cannot_open []))
{.#Some jvm_console}
(let [jvm_input (java/lang/System::in)
jvm_output (java/lang/System::out)]
(<| in
{try.#Success}
(is (Console IO)) ... TODO: Remove ASAP
(implementation
(def: (read _)
(|> jvm_input
java/io/InputStream::read
(# (try.with io.monad) each (|>> ffi.of_int .nat))))
(def: (read_line _)
(io#each (try#each (|>> ffi.of_string))
(java/io/Console::readLine jvm_console)))
(def: (write message)
(java/io/PrintStream::print (ffi.as_string message) jvm_output))
(def: close
(|>> (exception.except ..cannot_close) in)))))))))]
(for @.old (these <jvm>)
@.jvm (these <jvm>)
@.js (these (ffi.import: Buffer
"[1]::[0]"
(toString [] ffi.String))
(ffi.import: Readable_Stream
"[1]::[0]"
(read [] "?" Buffer)
(unshift "as" unshift|String [ffi.String] ffi.Boolean)
(unshift "as" unshift|Buffer [Buffer] ffi.Boolean))
(ffi.import: Writable_Stream
"[1]::[0]"
(write [ffi.String ffi.Function] ffi.Boolean)
(once [ffi.String ffi.Function] Any))
(ffi.import: process
"[1]::[0]"
("static" stdout Writable_Stream)
("static" stdin Readable_Stream))
(exception: .public cannot_read)
(template: (!read <type> <query>)
[(let [it (process::stdin)]
(case (Readable_Stream::read it)
{.#Some buffer}
(let [input (Buffer::toString buffer)]
(case (is (Maybe [<type> Text])
<query>)
{.#Some [head tail]}
(exec
(Readable_Stream::unshift|String tail it)
(async#in {try.#Success head}))
{.#None}
(exec
(Readable_Stream::unshift|Buffer buffer it)
(async#in (exception.except ..cannot_read [])))))
{.#None}
(async#in (exception.except ..cannot_read []))))])
(def: .public default
(Maybe (Console Async))
(if ffi.on_node_js?
{.#Some (implementation
(def: (read _)
(!read Char (do maybe.monad
[head (text.char 0 input)
[_ tail] (text.split_at 1 input)]
(in [head tail]))))
(def: (read_line _)
(!read Text (text.split_by text.\n input)))
(def: (write it)
(let [[read! write!] (is [(async.Async (Try [])) (async.Resolver (Try []))]
(async.async []))]
(exec
(Writable_Stream::write it (ffi.function (_ []) Any (io.run! (write! {try.#Success []})))
(process::stdout))
read!)))
(def: close
(|>> (exception.except ..cannot_close) async#in)))}
{.#None})))
(these)))
(def: .public (write_line message console)
(All (_ !) (-> Text (Console !) (! (Try Any))))
(# console write (format message text.new_line)))
(type: .public (Mock s)
(Interface
(is (-> s (Try [s Char]))
on_read)
(is (-> s (Try [s Text]))
on_read_line)
(is (-> Text s (Try s))
on_write)
(is (-> s (Try s))
on_close)))
(def: .public (mock mock init)
(All (_ s) (-> (Mock s) s (Console IO)))
(let [state (atom.atom init)]
(`` (implementation
(~~ (template [<method> <mock>]
[(def: (<method> _)
(do [! io.monad]
[|state| (atom.read! state)]
(case (# mock <mock> |state|)
{try.#Success [|state| output]}
(do !
[_ (atom.write! |state| state)]
(in {try.#Success output}))
{try.#Failure error}
(in {try.#Failure error}))))]
[read on_read]
[read_line on_read_line]
))
(def: (write input)
(do [! io.monad]
[|state| (atom.read! state)]
(case (# mock on_write input |state|)
{try.#Success |state|}
(do !
[_ (atom.write! |state| state)]
(in {try.#Success []}))
{try.#Failure error}
(in {try.#Failure error}))))
(def: (close _)
(do [! io.monad]
[|state| (atom.read! state)]
(case (# mock on_close |state|)
{try.#Success |state|}
(do !
[_ (atom.write! |state| state)]
(in {try.#Success []}))
{try.#Failure error}
(in {try.#Failure error}))))
))))
|
