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 import Data.Map
  16 from Text import class Text(concat,join), instance Text String
  17
  18 import parse
  19 import lex
  20 import sem
  21 import AST
  22 from yard import :: Error, instance toString Error
  23
  24 :: Opts = {
  25         version :: Bool,
  26         program :: String,
  27         lex :: Bool,
  28         parse :: Bool,
  29         sem :: Bool,
  30         fp :: Maybe String,
  31         help :: Bool}
  32
  33 derive gPrint TokenValue
  34
  35 Start :: *World -> *World
  36 Start w
  37 # (args, w) = parseArgs w
  38 # (stdin, w) = stdio w
  39 | args.version
  40         # stdin = stdin
  41                 <<< "spl 0.1 (17 march 2016)\n"
  42                 <<< "Copyright Pim Jager and Mart Lubbers\n"
  43         = snd $ fclose stdin w
  44 | args.help
  45         # stdin = stdin
  46                 <<< "Usage: " <<< args.program <<< " [OPTION] [FILE]\n"
  47                 <<< "<spl> ::= <spl> <parser> <lexer>\n"
  48                 <<< "Lex parse and either FILE or stdin\n"
  49                 <<< "\n"
  50                 <<< "Options:\n"
  51                 <<< "  --help             Show this help\n"
  52                 <<< "  --version          Show the version\n"
  53                 <<< "  --[no-]lex         Lexer output(default: disabled)\n"
  54                 <<< "  --[no-]parse       Parser output(default: disabled)\n"
  55                 <<< "  --[no-]sem         Semantic analysis output(default: enabled)\n"
  56         = snd $ fclose stdin w
  57 # (contents, stdin, w) = readFileOrStdin stdin args.fp w
  58 = case contents of
  59         (Left cs) = snd $ fclose (stdin <<< cs) w
  60         (Right cs) = case lexer cs of
  61                 (Left e) = snd $ fclose (stdin <<< toString e) w
  62                 (Right lexOut)
  63                 # stdin = if (not args.lex) stdin (
  64                         stdin <<< "//LEXER\n" <<< printTokens lexOut <<< "//LEXER\n")
  65                 = case parser lexOut of
  66                         (Left e) = snd $ fclose (stdin <<< toString e) w
  67                         (Right parseOut)
  68                         # stdin = if (not args.parse) stdin (
  69                                 stdin <<<  "//PARSER\n" <<< toString parseOut <<< "//PARSER\n")
  70                         = case sem parseOut of
  71                                 (Left e) = snd $ fclose (stdin <<< join "\n" (map toString e)) w
  72                                 (Right ast)
  73                                 # stdin = if (not args.sem) stdin (stdin
  74                                         <<< "//SEM G\n" <<< toString ast <<< "//SEMA\n")
  75                                 = snd $ fclose (stdin <<< "\n") w
  76                 where
  77                         printConstraints :: Constraints -> String
  78                         printConstraints [] = ""
  79                         printConstraints [(t1, t2):ts] = concat [
  80                                 "(", toString t1, ",", toString t2, ")"] +++ printConstraints ts
  81
  82                         printTokens :: [Token] -> String
  83                         printTokens ts = concat $ flatten $ map pt ts
  84                                 where
  85                                 pt ({line,col},token) = [toString line, ":",
  86                                                 toString col, ": ", printToString token, "\n"]
  87
  88 parseArgs :: *World -> (Opts, *World)
  89 parseArgs w
  90 # ([p:args], w) = getCommandLine w
  91 = (pa args {
  92         program=p,
  93         version=False,
  94         lex=False,
  95         parse=False,
  96         sem=True,
  97         fp=Nothing,
  98         help=False}, w)
  99 where
 100         pa :: [String] Opts -> Opts
 101         pa [] o = o
 102         pa ["--help":r] o = pa r {o & help=True}
 103         pa ["--version":r] o = pa r {o & version=True}
 104         pa ["--lex":r] o = pa r {o & lex=True}
 105         pa ["--no-lex":r] o = pa r {o & lex=False}
 106         pa ["--parse":r] o = pa r {o & parse=True}
 107         pa ["--no-parse":r] o = pa r {o & parse=False}
 108         pa ["--sem":r] o = pa r {o & sem=True}
 109         pa ["--no-sem":r] o = pa r {o & sem=False}
 110         pa [x:r] o = pa r {o & fp=Just x}
 111
 112 readFileOrStdin :: *File (Maybe String) *World -> *(Either String [Char], *File, *World)
 113 readFileOrStdin stdin Nothing w
 114 # (cs, stdin) = readEntireFile stdin
 115 = (Right cs, stdin, w)
 116 readFileOrStdin stdin (Just fp) w
 117 # (b, fin, w) = fopen fp FReadText w
 118 | not b = (Left "Unable to open file", stdin, w)
 119 # (cs,  fin) = readEntireFile fin
 120 # (b, w) = fclose fin w
 121 | not b = (Left "Unable to close file", stdin, w)
 122 = (Right cs, stdin, w)
 123
 124 readEntireFile :: *File -> *([Char], *File)
 125 readEntireFile f
 126 # (b, c, f) = freadc f
 127 | not b = ([], f)
 128 # (cs, f) = readEntireFile f
 129 = ([c:cs], f)