spl.icl

   1 module spl
   2
   3 import StdFile
   4 import StdBool
   5 import StdMisc
   6 import StdFunc
   7 import StdTuple
   8 import StdList
   9 import StdString
  10 import Data.Either
  11 import Data.Maybe
  12 import Data.Func
  13 import System.CommandLine
  14 import GenPrint
  15 from Text import class Text(concat), instance Text String
  16
  17 import parse
  18 import lex
  19 import sem
  20 import AST
  21 from yard import :: Error, instance toString Error
  22
  23 :: Opts = {
  24         version :: Bool,
  25         program :: String,
  26         lex :: Bool,
  27         parse :: Bool,
  28         fp :: Maybe String,
  29         help :: Bool}
  30
  31 derive gPrint TokenValue
  32
  33 Start :: *World -> *World
  34 Start w
  35 # (args, w) = parseArgs w
  36 # (stdin, w) = stdio w
  37 | args.version
  38         # stdin = stdin
  39                 <<< "spl 0.1 (17 march 2016)\n"
  40                 <<< "Copyright Pim Jager and Mart Lubbers\n"
  41         = snd $ fclose stdin w
  42 | args.help
  43         # stdin = stdin
  44                 <<< "Usage: " <<< args.program <<< " [OPTION] [FILE]\n"
  45                 <<< "<spl> ::= <spl> <parser> <lexer>\n"
  46                 <<< "Lex parse and either FILE or stdin\n"
  47                 <<< "\n"
  48                 <<< "Options:\n"
  49                 <<< "  --help             Show this help\n"
  50                 <<< "  --version          Show the version\n"
  51                 <<< "  --[no-]lex         Lexer output(default: disabled)\n"
  52                 <<< "  --[no-]parse       Parser output(default: enabled)\n"
  53         = snd $ fclose stdin w
  54 # (contents, stdin, w) = readFileOrStdin stdin args.fp w
  55 = case contents of
  56         (Left cs) = snd $ fclose (stdin <<< cs) w
  57         (Right cs)
  58         # lexOut = lexer cs
  59         # stdin = if (not args.lex) stdin (case lexOut of
  60                 (Right toks) =
  61                         stdin <<< "//LEXER\n" <<< printTokens toks <<< "//LEXER\n"
  62                 _ = stdin)
  63         # parseOut = parser lexOut
  64         # stdin = if (not args.parse) stdin (case parseOut of
  65                 (Right ast) =
  66                         stdin <<<  "//PARSER\n" <<< toString ast <<< "//PARSER\n"
  67                 (Left parse) = stdin <<< toString parse)
  68         # semOut = sem parseOut
  69         # stdin = case semOut of
  70                 (Right ast) =
  71                         stdin <<<  "//TYPE\n" <<< toString ast <<< "//TYPE\n"
  72                 (Left parse) = stdin <<< toString parse
  73         = snd $ fclose stdin w
  74                 where
  75                         printTokens :: [Token] -> String
  76                         printTokens ts = concat $ flatten $ map pt ts
  77                                 where
  78                                 pt ({line,col},token) = [toString line, ":",
  79                                                 toString col, ": ", printToString token, "\n"]
  80
  81 parseArgs :: *World -> (Opts, *World)
  82 parseArgs w
  83 # ([p:args], w) = getCommandLine w
  84 = (pa args {
  85         program=p,
  86         version=False,
  87         lex=False,
  88         parse=True,
  89         fp=Nothing,
  90         help=False}, w)
  91 where
  92         pa :: [String] Opts -> Opts
  93         pa [] o = o
  94         pa ["--help":r] o = pa r {o & help=True}
  95         pa ["--version":r] o = pa r {o & version=True}
  96         pa ["--lex":r] o = pa r {o & lex=True}
  97         pa ["--no-lex":r] o = pa r {o & lex=False}
  98         pa ["--parse":r] o = pa r {o & parse=True}
  99         pa ["--no-parse":r] o = pa r {o & parse=False}
 100         pa [x:r] o = pa r {o & fp=Just x}
 101
 102 readFileOrStdin :: *File (Maybe String) *World -> *(Either String [Char], *File, *World)
 103 readFileOrStdin stdin Nothing w
 104 # (cs, stdin) = readEntireFile stdin
 105 = (Right cs, stdin, w)
 106 readFileOrStdin stdin (Just fp) w
 107 # (b, fin, w) = fopen fp FReadText w
 108 | not b = (Left "Unable to open file", stdin, w)
 109 # (cs,  fin) = readEntireFile fin
 110 # (b, w) = fclose fin w
 111 | not b = (Left "Unable to close file", stdin, w)
 112 = (Right cs, stdin, w)
 113
 114 readEntireFile :: *File -> *([Char], *File)
 115 readEntireFile f
 116 # (b, c, f) = freadc f
 117 | not b = ([], f)
 118 # (cs, f) = readEntireFile f
 119 = ([c:cs], f)