:: *StartType :== (LexerOutput, ParserOutput, *World)
+Start :: *World -> *StartType
+Start w
+# (args, w) = parseArgs w
+| args.help
+ # (out, w) = stdio w
+ # out = out <<< "\nUsage: " <<< args.program <<< " [opts] [FILENAME]\n"
+ <<< "\t--help Show this help\n"
+ <<< "\t--lex Lex only, is mutually exclusive with --parse\n"
+ <<< "\t--parse Lex & Parse only\n\n"
+ <<< "\tFILENAME File to parse, when unspecified stdin is parsed\n"
+ # (_, w) = fclose out w
+ = (Left "", Left "", w)
+# (stdin, w) = stdio w
+# (contents, stdin, w) = readFileOrStdin stdin args.fp w
+| args.lex = case contents of
+ (Right cs) = (lexer cs, Left "Parsing Disabled", w)
+ (Left e) = (Left e, Left "Parsing disabled", w)
+= case contents of
+ (Left e) = (Left e, Left "", w)
+ (Right cs)
+ # lexout = lexer cs
+ # parsout = parser lexout
+ # stdin = stdin <<< (either (const "") toString parsout)
+ # (_, w) = fclose stdin w
+ = (lexout, parser lexout, w)
+
parseArgs :: *World -> (Opts, *World)
parseArgs w
# ([p:args], w) = getCommandLine w
pa ["--parse":r] = \o.pa r {o & lex=False, parse=True}
pa [x:r] = \o.pa r {o & fp=Just x}
-//Start :: *World -> (LexerOutput, ParserOutput, *World)
-//Start w
-//# (args, w) = getCommandLine w
-//# (toparse, out) = readEntireFile out
-//= (lexer toparse, parse (lexer toparse), w)
-
-Start :: *World -> *StartType
-Start w
-# (args, w) = parseArgs w
-| args.help = help args.program w
-# (stdin, w) = stdio w
-# (contents, stdin, w) = readFileOrStdin stdin args.fp w
-| args.lex = case contents of
- (Right cs) = (lexer cs, Left "Parsing Disabled", w)
- (Left e) = (Left e, Left "Parsing disabled", w)
-= case contents of
- (Left e) = (Left e, Left "", w)
- (Right cs) = let lexOut = lexer cs in (lexOut, parser lexOut, w)
-
readFileOrStdin :: *File (Maybe String) *World -> *(Either String [Char], *File, *World)
readFileOrStdin stdin Nothing w
# (cs, stdin) = readEntireFile stdin
# (b, fin, w) = fopen fp FReadText w
| not b = (Left "Unable to open file", stdin, w)
# (cs, fin) = readEntireFile fin
-# (_, w) = fclose fin w
+# (b, w) = fclose fin w
+| not b = (Left "Unable to close file", stdin, w)
= (Right cs, stdin, w)
readEntireFile :: *File -> *([Char], *File)
| not b = ([], f)
# (cs, f) = readEntireFile f
= ([c:cs], f)
-
-help :: String *World -> *StartType
-help p w
-# (out, w) = stdio w
-# out = out <<< "\nUsage: " <<< p <<< " [opts] [FILENAME]\n"
- <<< "\t--help Show this help\n"
- <<< "\t--lex Lex only, is mutually exclusive with --parse\n"
- <<< "\t--parse Lex & Parse only\n\n"
- <<< "\tFILENAME File to parse, when unspecified stdin is parsed\n"
-# (_, w) = fclose out w
-= (Left "", Left "", w)
-