From a7d7542dc646a5fd124ef71e71ce260889f1701b Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Tue, 2 Feb 2016 19:24:50 +0100
Subject: Moved to 1415 directory

---
 fp2/week2/mart/StdIOMonad.icl | 138 ------------------------------------------
 1 file changed, 138 deletions(-)
 delete mode 100644 fp2/week2/mart/StdIOMonad.icl

(limited to 'fp2/week2/mart/StdIOMonad.icl')

diff --git a/fp2/week2/mart/StdIOMonad.icl b/fp2/week2/mart/StdIOMonad.icl
deleted file mode 100644
index ffa2857..0000000
--- a/fp2/week2/mart/StdIOMonad.icl
+++ /dev/null
@@ -1,138 +0,0 @@
-implementation module StdIOMonad
-
-import StdBool
-import StdEnum
-import StdFile
-import StdList
-import StdMaybe
-import StdMisc
-import StdMonad
-import StdOverloaded
-import StdString
-import StdTuple
-
-:: IO a = IO (*W -> *(a, *W))
-:: *W :== *(*World, *[*(Filehandle, *File)])
-:: Filemode = Lees | Schrijf
-:: Filenaam :== String
-:: Filehandle :== String
-
-// Conversion from our filemodes to StdFile filemodes
-instance toInt Filemode where
-	toInt Lees = FReadText
-	toInt Schrijf = FWriteText
-
-// Apply the monadic program on the world
-doIO:: (IO a) *World -> *(a, *W)
-doIO (IO f) w = f (w, [])
-
-// Lift the value out of the monadic domain
-unIO:: (IO a) -> *W -> *(a, *W)
-unIO (IO f) = f 
-
-instance return IO where
-	return x = IO (\w -> (x, w))
-instance >>=    IO where
-	(>>=) (IO f) g = IO (\w = let (a, w1) = f w in unIO (g a) w1)
-
-// Read one line from the console
-read:: IO String
-read = IO read`
-	where
-		read`:: *W -> *(String, *W)
-		read` (world, s)
-		# (io, world) = stdio world
-		# (line, io) = freadline io
-		# (_, world) = fclose io world
-		= (line, (world, s))
-
-// Write a line from the console
-write		:: String -> IO Void
-write s = IO (write` s)
-	where
-		write`:: String *W -> *(Void, *W)
-		write` line (world, s)
-		# (io, world) = stdio world
-		# io = io <<< line
-		# (_, world) = fclose io world
-		= (Void, (world, s))
-
-// Open a file
-open:: Filenaam Filemode -> IO (Maybe Filehandle)
-open s m = IO (open` s m)
-	where
-		open`:: String Filemode *W -> *(Maybe Filehandle, *W)
-		open` fp m (world, fs)
-		| any (\l = fp == fst l) fs = (Nothing, (world, fs))
-		# (ok, file, world) = fopen fp (toInt m) world
-		= (Just fp, (world, [(fp, file):fs]))
-
-// Close a file. If the file can't be closed by the system the program will
-// abort
-close:: Filehandle -> IO Bool
-close fh = IO (close` fh)
-	where
-		close`:: Filehandle *W -> *(Bool, *W)
-		close` fp (world, fs)
-		# (currentfiletuple, fs) = getFH fp fs
-		| isNothing currentfiletuple = (False, (world, fs))
-		# (currentfh, currentfile) = fromJust currentfiletuple
-		# (ok, world) = fclose currentfile world
-		| not ok = abort "File can't be closed"
-		| otherwise = (True, (world, fs))
-		
-
-// Determine if the file is at the end. This will abort when the file is not
-// open or error if the file is not opened for reading.
-eof			:: Filehandle -> IO Bool
-eof fh = IO (eof` fh)
-	where 
-		eof`:: Filehandle *W -> *(Bool, *W)
-		eof` fp (world, fs)
-		# (currentfiletuple, fs) = getFH fp fs
-		| isNothing currentfiletuple = abort "Can't do eof on non-existing file"
-		# (currentfh, currentfile) = fromJust currentfiletuple
-		# (ok, file) = fend currentfile
-		= (ok, (world, [(currentfh, file):fs]))
-
-// Read one line from a file (including newline). This will abort when the file
-// is not open or error if the file is not opened for reading.
-readline	:: Filehandle -> IO (Maybe String)
-readline fh = IO (readline` fh)
-	where
-		readline` :: Filehandle *W -> *(Maybe String, *W)
-		readline` fh (world, fs)
-		# (currentfiletuple, fs) = getFH fh fs
-		| isNothing currentfiletuple = abort "File not open"
-		# (currentfh, currentfile) = fromJust currentfiletuple
-		# (s, currentfile) = freadline currentfile
-		= (Just s, (world, [(currentfh, currentfile):fs]))
-
-// Write one line from a file (will not append newline). This will abort when
-// the file is not open or error if the file is not opened for writing.
-writeline	:: String Filehandle -> IO Bool
-writeline s fh = IO (writeline` s fh)
-	where
-		writeline` :: String Filehandle *W -> *(Bool, *W)
-		writeline` s fh (world, fs)
-		# (currentfiletuple, fs) = getFH fh fs
-		| isNothing currentfiletuple = abort "File not open"
-		# (currentfh, currentfile) = fromJust currentfiletuple
-		# currentfile = fwrites s currentfile
-		= (True, (world, [(currentfh, currentfile):fs]))
-
-// Gets the file associated with the filehandle given, this is done in a very
-// ugly way to retain uniqueness...
-getFH:: Filehandle *[*(Filehandle, *File)] ->
-	(Maybe *(Filehandle, *File), *[*(Filehandle, *File)]) 
-getFH fh fs
-# (fhs, fis) = unzip fs
-# fhsC = zip2 [0..length fhs] fhs
-# index = [(i, h) \\ (i, h) <- fhsC | h == fh]
-| length index == 0 = (Nothing, zip2 fhs fis)
-# index = fst (hd index)
-# (fis1, fis2) = splitAt index fis
-# (fhs1, fhs2) = splitAt index fhs
-# (thefile, fis2) = splitAt 1 fis2
-# (thehandle, fhs2) = splitAt 1 fhs2
-= (Just (hd thehandle, hd thefile), zip2 (fhs1 ++ fhs2) (fis1 ++ fis2))
-- 
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