X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=src%2Fmain.icl;h=31c98d760e0899bacbfb28ba60d09170f7f69614;hb=b3bedf1e825aaaee9134dddc6de82b373bf8b86b;hp=9bc8d20fcb001e155579114817b1a2ddd99d5222;hpb=b4636110ab65f233ed40d4390b62c7799df3c949;p=cc1516.git

diff --git a/src/main.icl b/src/main.icl
index 9bc8d20..31c98d7 100644
--- a/src/main.icl
+++ b/src/main.icl
@@ -2,16 +2,106 @@ module main
 
 import StdFile
 import StdBool
+import StdMisc
+import StdFunc
+import StdTuple
+import StdList
+import StdString
+import Data.Either
+import Data.Maybe
+import Data.Func
+import System.CommandLine
+import GenPrint
+from Text import class Text(concat), instance Text String
 
 import parse
 import lex
+from yard import :: Error, instance toString Error
 
-Start :: *World -> (LexerOutput, ParserOutput, *World)
+:: Opts = {
+	version :: Bool,
+	program :: String,
+	lex :: Bool,
+	parse :: Bool,
+	fp :: Maybe String,
+	help :: Bool}
+
+derive gPrint TokenValue
+
+Start :: *World -> *World
 Start w
-# (out, w) = stdio w
-# (toparse, out) = readEntireFile out
-# (_, w) = fclose out w
-= (lexer toparse, parse (lexer toparse), w)
+# (args, w) = parseArgs w
+# (stdin, w) = stdio w
+| args.version
+	# stdin = stdin 
+		<<< "main 0.1 (17 march 2016)\n"
+		<<< "Copyright Pim Jager and Mart Lubbers\n"
+	= snd $ fclose stdin w
+| args.help
+	# stdin = stdin 
+		<<< "Usage: " <<< args.program <<< " [OPTION] [FILE]\n"
+		<<< "Lex parse and either FILE or stdin\n"
+		<<< "\n"
+		<<< "Options:\n"
+		<<< "  --help             Show this help\n"
+		<<< "  --version          Show the version\n"
+		<<< "  --[no-]lex         Lexer output(default: disabled)\n"
+		<<< "  --[no-]parse       Parser output(default: enabled)\n"
+	= snd $ fclose stdin w
+# (contents, stdin, w) = readFileOrStdin stdin args.fp w
+= case contents of
+	(Left cs) = snd $ fclose (stdin <<< cs) w
+	(Right cs)
+	# lexOut = lexer cs
+	# stdin = if (not args.lex) stdin (case lexOut of
+		(Right toks) = 
+			stdin <<< "---LEXER\n" <<< printTokens toks <<< "---LEXER\n"
+		_ = stdin)
+	# parseOut = parser lexOut
+	# stdin = if (not args.parse) stdin (case parser lexOut of
+		(Right ast) = 
+			stdin <<<  "---PARSER\n" <<< toString ast <<< "---PARSER\n" 
+		(Left parse) = stdin <<< toString parse)
+	= snd $ fclose stdin w
+		where
+			printTokens :: [Token] -> String
+			printTokens ts = concat $ flatten $ map pt ts
+				where
+					pt {line,column,token} = [toString line, ":", 
+						toString column, ": ", printToString token, "\n"]
+
+parseArgs :: *World -> (Opts, *World)
+parseArgs w
+# ([p:args], w) = getCommandLine w
+= (pa args {
+	program=p,
+	version=False,
+	lex=False,
+	parse=True,
+	fp=Nothing,
+	help=False}, w)
+where
+	pa :: [String] Opts -> Opts
+	pa [] o = o
+	pa ["--help":r] o = pa r {o & help=True}
+	pa ["--version":r] o = pa r {o & version=True}
+	pa ["--lex":r] o = pa r {o & lex=True}
+	pa ["--no-lex":r] o = pa r {o & lex=False}
+	pa ["--parse":r] o = pa r {o & parse=True}
+	pa ["--no-parse":r] o = pa r {o & parse=False}
+	pa [x:r] o = pa r {o & fp=Just x}
+
+readFileOrStdin :: *File (Maybe String) *World -> *(Either String [Char], *File, *World)
+readFileOrStdin stdin Nothing w
+# (cs, stdin) = readEntireFile stdin
+= (Right cs, stdin, w)
+readFileOrStdin stdin (Just fp) w
+# (b, fin, w) = fopen fp FReadText w
+| not b = (Left "Unable to open file", stdin, w)
+# (cs, 	fin) = readEntireFile fin
+# (b, w) = fclose fin w
+| not b = (Left "Unable to close file", stdin, w)
+= (Right cs, stdin, w)
 
 readEntireFile :: *File -> *([Char], *File)
 readEntireFile f