Idris2/libs/prelude/Prelude/IO.idr

147 lines
3.6 KiB
Idris
Raw Normal View History

module Prelude.IO
import Builtin
import PrimIO
import Prelude.Basics
import Prelude.Interfaces
import Prelude.Show
%default total
--------
-- IO --
--------
public export
Functor IO where
2021-06-16 17:22:30 +03:00
map f io = io_bind io $ io_pure . f
%inline
public export
Applicative IO where
pure x = io_pure x
f <*> a
= io_bind f (\f' =>
io_bind a (\a' =>
io_pure (f' a')))
%inline
public export
Monad IO where
b >>= k = io_bind b k
public export
interface Monad io => HasIO io where
constructor MkHasIO
liftIO : IO a -> io a
public export
interface Monad io => HasLinearIO io where
constructor MkHasLinearIO
liftIO1 : (1 _ : IO a) -> io a
public export %inline
HasLinearIO IO where
liftIO1 x = x
public export %inline
HasLinearIO io => HasIO io where
liftIO x = liftIO1 x
export %inline
primIO : HasIO io => (fn : (1 x : %World) -> IORes a) -> io a
primIO op = liftIO (fromPrim op)
export %inline
primIO1 : HasLinearIO io => (1 fn : (1 x : %World) -> IORes a) -> io a
primIO1 op = liftIO1 (fromPrim op)
%extern
prim__onCollectAny : AnyPtr -> (AnyPtr -> PrimIO ()) -> PrimIO GCAnyPtr
%extern
prim__onCollect : Ptr t -> (Ptr t -> PrimIO ()) -> PrimIO (GCPtr t)
export
onCollectAny : HasIO io => AnyPtr -> (AnyPtr -> IO ()) -> io GCAnyPtr
onCollectAny ptr c = primIO (prim__onCollectAny ptr (\x => toPrim (c x)))
export
onCollect : HasIO io => Ptr t -> (Ptr t -> IO ()) -> io (GCPtr t)
onCollect ptr c = primIO (prim__onCollect ptr (\x => toPrim (c x)))
2021-04-23 13:09:31 +03:00
%foreign "C:idris2_getString, libidris2_support, idris_support.h"
"javascript:lambda:x=>x"
export
prim__getString : Ptr String -> String
%foreign "C:putchar,libc 6"
prim__putChar : Char -> (1 x : %World) -> IORes ()
%foreign "C:getchar,libc 6"
%extern prim__getChar : (1 x : %World) -> IORes Char
2021-04-23 13:09:31 +03:00
%foreign "C:idris2_getStr, libidris2_support, idris_support.h"
"node:support:getStr,support_system_file"
prim__getStr : PrimIO String
2021-04-23 13:09:31 +03:00
%foreign "C:idris2_putStr, libidris2_support, idris_support.h"
"node:lambda:x=>process.stdout.write(x)"
"browser:lambda:x=>console.log(x)"
prim__putStr : String -> PrimIO ()
||| Output a string to stdout without a trailing newline.
export
putStr : HasIO io => String -> io ()
putStr str = primIO (prim__putStr str)
||| Output a string to stdout with a trailing newline.
export
putStrLn : HasIO io => String -> io ()
putStrLn str = putStr (prim__strAppend str "\n")
||| Read one line of input from stdin, without the trailing newline.
export
getLine : HasIO io => io String
getLine = primIO prim__getStr
2020-08-08 01:43:51 +03:00
||| Write one single-byte character to stdout.
export
putChar : HasIO io => Char -> io ()
putChar c = primIO (prim__putChar c)
2020-08-08 01:43:51 +03:00
||| Write one multi-byte character to stdout, with a trailing newline.
export
putCharLn : HasIO io => Char -> io ()
putCharLn c = putStrLn (prim__cast_CharString c)
2020-08-08 01:43:51 +03:00
||| Read one single-byte character from stdin.
export
getChar : HasIO io => io Char
getChar = primIO prim__getChar
2020-08-24 19:38:29 +03:00
%foreign "scheme:blodwen-thread"
RefC backend improvements (#2425) * RefC backend improvements 1. OnCollect had the wrong number of arguments. The code creator expects 3 arguments, but onCollect in prim.h expected 4 arguments. The first of which was an erased arguments. That is now fixed. 2. OnCollect did not call `newReference` when creating a new reference to the pointer and the freeing function 3. OnCollect and OnCollectAny still had a spurious printf statement Those issues have been fixed, the test case can be found in tests/refc/garbageCollect 4. The IORef mechanism expects that the %World token will be passed around consistently. This is not the case. States in Control.App make use of IORefs, but the function created from Control.App.prim_app_bind had the world token erased to NULL. Now, IORefs are managed using a global variable, IORef_Storage * global_IORef_Storage; referenced in cBackend.h, defined in the created .c file, and set to NULL in main(); 5. While multithreading and forking is still not supported, compiling a program that makes use of Control.App demands a C implementation of prim_fork. Files support/refc/threads.c and support/refc/threads.h provide a dummy implementation for it, so that Control.App programs compile and run. A test for these 2 issues is given in tests/refc/issue2424 * format changes to make the linter happy * format changes to make the linter happy * format changes to make the linter happy * spelling mistake braket -> bracket Co-authored-by: Volkmar Frinken <volkmar@onutechnology.com>
2022-04-27 15:59:32 +03:00
"C:refc_fork"
2020-08-25 14:30:57 +03:00
export
prim__fork : (1 prog : PrimIO ()) -> PrimIO ThreadID
export
fork : (1 prog : IO ()) -> IO ThreadID
2020-08-24 19:38:29 +03:00
fork act = fromPrim (prim__fork (toPrim act))
%foreign "scheme:blodwen-thread-wait"
export
prim__threadWait : (1 threadID : ThreadID) -> PrimIO ()
export
threadWait : (1 threadID : ThreadID) -> IO ()
threadWait threadID = fromPrim (prim__threadWait threadID)
||| Output something showable to stdout, without a trailing newline.
export
print : (HasIO io, Show a) => a -> io ()
print x = putStr $ show x
||| Output something showable to stdout, with a trailing newline.
export
printLn : (HasIO io, Show a) => a -> io ()
printLn x = putStrLn $ show x