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 import gen
  23 from yard import :: Error, instance toString Error
  24
  25 :: Opts = {
  26         version :: Bool,
  27         program :: String,
  28         lex :: Bool,
  29         parse :: Bool,
  30         sem :: Bool,
  31     gen :: Bool,
  32         fp :: Maybe String,
  33         help :: Bool}
  34
  35 derive gPrint TokenValue
  36
  37 preamble :: AST -> AST
  38 preamble (AST fd) = AST (pre ++ fd)
  39         where
  40                 pre = [
  41                         FunDecl zero "1printstr" ["x"] Nothing [] [
  42                                 IfStmt (FunExpr zero "isEmpty" [VarExpr zero (VarDef "x" [])] [])
  43                                         []
  44                                         [FunStmt "1printchar" [VarExpr zero (VarDef "x" [FieldHd])] []
  45                                         ,FunStmt "1printstr" [VarExpr zero (VarDef "x" [FieldTl])] []]]
  46                         ,
  47                         FunDecl zero "1printbool" ["x"] Nothing [] [
  48                                 IfStmt (VarExpr zero (VarDef "x" []))
  49                                         [FunStmt "1printstr" [makeStrExpr zero $ fromString "True"] []]
  50                                         [FunStmt "1printstr" [makeStrExpr zero $ fromString "False"] []]]
  51                         ]
  52
  53 Start :: *World -> *World
  54 Start w
  55 # (args, w) = parseArgs w
  56 # (stdin, w) = stdio w
  57 | args.version
  58         # stdin = stdin
  59                 <<< "spl 1.0 (9 June 2016)\n"
  60                 <<< "Copyright Pim Jager and Mart Lubbers\n"
  61         = snd $ fclose stdin w
  62 | args.help
  63         # stdin = stdin
  64                 <<< "Usage: " <<< args.program <<< " [OPTION] [FILE]\n"
  65                 <<< "\n"
  66                 <<< "Options:\n"
  67                 <<< "  --help             Show this help\n"
  68                 <<< "  --version          Show the version\n"
  69                 <<< "  --[no-]lex         Lexer output(default: disabled)\n"
  70                 <<< "  --[no-]parse       Parser output(default: disabled)\n"
  71                 <<< "  --[no-]sem         Semantic analysis output(default: disabled)\n"
  72                 <<< "  --[no-]code        Code generation output(default: enabled)\n"
  73         = snd $ fclose stdin w
  74 # (contents, stdin, w) = readFileOrStdin stdin args.fp w
  75 = case contents of
  76         (Left cs) = snd $ fclose (stdin <<< cs) w
  77         (Right cs) = case lexer cs of
  78                 (Left e) = snd $ fclose (stdin <<< toString e <<< "\n") w
  79                 (Right lexOut)
  80                 # stdin = if (not args.lex) stdin (
  81                         stdin <<< "//LEXER\n" <<< printTokens lexOut <<< "//LEXER\n")
  82                 = case parser lexOut of
  83                         (Left e) = snd $ fclose (stdin <<< toString e <<< "\n") w
  84                         (Right parseOut)
  85                         # stdin = if (not args.parse) stdin (
  86                                 stdin <<<  "//PARSER\n" <<< toString parseOut <<< "//PARSER\n")
  87                         = case sem (preamble parseOut) of
  88                                 (Left e) = snd $ fclose (stdin <<< join "\n" (map toString e) <<< "\n") w
  89                                 (Right (ast, gam))
  90                                 # stdin = if (not args.sem) stdin (stdin
  91                                         <<< "//SEM AST\n" <<< toString ast <<< "//SEM AST\n"
  92                     <<< "//SEM GAMMA\n" <<< toString gam <<< "//SEM GAMMA\n")
  93                                 = case gen ast of
  94                                         (Left e) = snd $ fclose (stdin <<< e) w
  95                                         (Right asm)
  96                                         # stdin = if (not args.gen) stdin (stdin
  97                         <<< ";CODE GEN\n" <<< asm <<< "\n;CODE GEN\n")
  98                                         = snd $ fclose (stdin <<< "\n") w
  99                 where
 100                         printConstraints :: Constraints -> String
 101                         printConstraints [] = ""
 102                         printConstraints [(t1, t2):ts] = concat [
 103                                 "(", toString t1, ",", toString t2, ")"] +++ printConstraints ts
 104
 105                         printTokens :: [Token] -> String
 106                         printTokens ts = concat $ flatten $ map pt ts
 107                                 where
 108                                 pt ({line,col},token) = [toString line, ":",
 109                                                 toString col, ": ", printToString token, "\n"]
 110
 111 parseArgs :: *World -> (Opts, *World)
 112 parseArgs w
 113 # ([p:args], w) = getCommandLine w
 114 = (pa args {
 115         program=p,
 116         version=False,
 117         lex=False,
 118         parse=False,
 119         sem=False,
 120     gen=True,
 121         fp=Nothing,
 122         help=False}, w)
 123 where
 124         pa :: [String] Opts -> Opts
 125         pa [] o = o
 126         pa ["--help":r] o = pa r {o & help=True}
 127         pa ["--version":r] o = pa r {o & version=True}
 128         pa ["--lex":r] o = pa r {o & lex=True}
 129         pa ["--no-lex":r] o = pa r {o & lex=False}
 130         pa ["--parse":r] o = pa r {o & parse=True}
 131         pa ["--no-parse":r] o = pa r {o & parse=False}
 132         pa ["--sem":r] o = pa r {o & sem=True}
 133         pa ["--no-sem":r] o = pa r {o & sem=False}
 134     pa ["--code":r] o = pa r {o & gen=True}
 135     pa ["--no-code":r] o = pa r {o & gen=False}
 136         pa [x:r] o = pa r {o & fp=Just x}
 137
 138 readFileOrStdin :: *File (Maybe String) *World -> *(Either String [Char], *File, *World)
 139 readFileOrStdin stdin Nothing w
 140 # (cs, stdin) = readEntireFile stdin
 141 = (Right cs, stdin, w)
 142 readFileOrStdin stdin (Just fp) w
 143 # (b, fin, w) = fopen fp FReadText w
 144 | not b = (Left "Unable to open file", stdin, w)
 145 # (cs,  fin) = readEntireFile fin
 146 # (b, w) = fclose fin w
 147 | not b = (Left "Unable to close file", stdin, w)
 148 = (Right cs, stdin, w)
 149
 150 readEntireFile :: *File -> *([Char], *File)
 151 readEntireFile f
 152 # (b, c, f) = freadc f
 153 | not b = ([], f)
 154 # (cs, f) = readEntireFile f
 155 = ([c:cs], f)