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
-Start :: *World -> (LexerOutput, ParserOutput, *World)
+:: Opts = {
+ 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
+| args.help
+ # (out, w) = stdio w
+ # out = out <<< "Usage: " <<< args.program <<< " [opts] [FILENAME]\n"
+ <<< "\t--help Show this help\n"
+ <<< "\t--[no-]lex Lexer output(default: disabled)\n"
+ <<< "\t--[no-]parse Parser output(default: enabled)\n\n"
+ <<< "\tFILENAME File to parse, when unspecified stdin is parsed\n"
+ = snd $ fclose out w
+# (stdin, w) = stdio 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
+ (Left lex) = stdin <<< toString lex
+ (Right toks) = stdin <<<
+ concat (map (\(_, _, t)->printToString t +++ "\n") toks))
+ # parseOut = parser lexOut
+ # stdin = if (not args.parse) stdin (case parser lexOut of
+ (Left parse) = stdin <<< toString parse
+ (Right ast) = stdin <<< toString ast)
+ = snd $ fclose stdin w
+
+parseArgs :: *World -> (Opts, *World)
+parseArgs w
+# ([p:args], w) = getCommandLine w
+= (pa args {program=p, 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 ["--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