src/Idris/REPLParser.hs · Idris-dev

1

2module Idris.REPLParser(parseCmd) where

3

4import System.FilePath ((</>))

5import System.Console.ANSI (Color(..))

6

7import Idris.Colours

8import Idris.AbsSyntax

9import Idris.Core.TT

10import qualified Idris.Parser as P

11

12import Control.Applicative

13import Control.Monad.State.Strict

14

15import Text.Parser.Combinators

16import Text.Parser.Char(anyChar)

17import Text.Trifecta(Result, parseString)

18import Text.Trifecta.Delta

19

20import Debug.Trace

21import Data.List

22import Data.List.Split(splitOn)

23import Data.Char(toLower)

24import qualified Data.ByteString.UTF8 as UTF8

25

26parseCmd :: IState -> String -> String -> Result Command

27parseCmd i inputname = P.runparser pCmd i inputname

28

29cmd :: [String] -> P.IdrisParser ()

30cmd xs = try (do P.lchar ':'; docmd (sortBy (\x y -> compare (length y) (length x)) xs))

31 where docmd [] = fail "No such command"

32 docmd (x:xs) = try (discard (P.reserved x)) <|> docmd xs

33

34pCmd :: P.IdrisParser Command

35

36pCmd = do P.whiteSpace; do cmd ["q", "quit"]; eof; return Quit

37 <|> do cmd ["h", "?", "help"]; eof; return Help

38 <|> do cmd ["w", "warranty"]; eof; return Warranty

39 <|> do cmd ["r", "reload"]; eof; return Reload

40 <|> do cmd ["module"]; f <- P.identifier; eof;

41 return (ModImport (toPath f))

42 <|> do cmd ["e", "edit"]; eof; return Edit

43 <|> do cmd ["exec", "execute"]; eof; return Execute

44 <|> try (do cmd ["c", "compile"]

45 i <- get

46 f <- P.identifier

47 eof

48 return (Compile (Via "c") f))

49 <|> do cmd ["c", "compile"]

50 i <- get

51 c <- codegenOption

52 f <- P.identifier

53 eof

54 return (Compile c f)

55 <|> do cmd ["proofs"]; eof; return Proofs

56 <|> do cmd ["rmproof"]; n <- P.name; eof; return (RmProof n)

57 <|> do cmd ["showproof"]; n <- P.name; eof; return (ShowProof n)

58 <|> do cmd ["log"]; i <- P.natural; eof; return (LogLvl (fromIntegral i))

59 <|> do cmd ["let"]

60 defn <- concat <$> many (P.decl defaultSyntax)

61 return (NewDefn defn)

62 <|> do cmd ["unlet","undefine"]

63 Undefine `fmap` many P.name

64 <|> do cmd ["lto", "loadto"];

65 toline <- P.natural

66 f <- many anyChar;

67 return (Load f (Just (fromInteger toline)))

68 <|> do cmd ["l", "load"]; f <- many anyChar;

69 return (Load f Nothing)

70 <|> do cmd ["cd"]; f <- many anyChar; return (ChangeDirectory f)

71 <|> do cmd ["spec"]; P.whiteSpace; t <- P.fullExpr defaultSyntax; return (Spec t)

72 <|> do cmd ["hnf"]; P.whiteSpace; t <- P.fullExpr defaultSyntax; return (HNF t)

73 <|> do cmd ["inline"]; P.whiteSpace; t <- P.fullExpr defaultSyntax; return (TestInline t)

74 <|> do c <- try (cmd ["doc"] *> P.constant); eof; return (DocStr (Right c))

75 <|> do cmd ["doc"]; n <- (P.fnName <|> (P.string "_|_" >> return falseTy)); eof; return (DocStr (Left n))

76 <|> do cmd ["d", "def"]; P.whiteSpace; n <- P.fnName; eof; return (Defn n)

77 <|> do cmd ["total"]; do n <- P.fnName; eof; return (TotCheck n)

78 <|> do cmd ["t", "type"]; do P.whiteSpace; t <- P.fullExpr defaultSyntax; return (Check t)

79 <|> do cmd ["u", "universes"]; eof; return Universes

80 <|> do cmd ["di", "dbginfo"]; n <- P.fnName; eof; return (DebugInfo n)

81 <|> do cmd ["miss", "missing"]; n <- P.fnName; eof; return (Missing n)

82 <|> try (do cmd ["dynamic"]; eof; return ListDynamic)

83 <|> do cmd ["dynamic"]; l <- many anyChar; return (DynamicLink l)

84 <|> do cmd ["color", "colour"]; pSetColourCmd

85 <|> do cmd ["set"]; o <- pOption; return (SetOpt o)

86 <|> do cmd ["unset"]; o <- pOption; return (UnsetOpt o)

87 <|> do cmd ["s", "search"]; P.whiteSpace;

88 t <- P.typeExpr (defaultSyntax { implicitAllowed = True }); return (Search t)

89 <|> do cmd ["cs", "casesplit"]; P.whiteSpace;

90 upd <- option False (do P.lchar '!'; return True)

91 l <- P.natural; n <- P.name;

92 return (CaseSplitAt upd (fromInteger l) n)

93 <|> do cmd ["apc", "addproofclause"]; P.whiteSpace;

94 upd <- option False (do P.lchar '!'; return True)

95 l <- P.natural; n <- P.name;

96 return (AddProofClauseFrom upd (fromInteger l) n)

97 <|> do cmd ["ac", "addclause"]; P.whiteSpace;

98 upd <- option False (do P.lchar '!'; return True)

99 l <- P.natural; n <- P.name;

100 return (AddClauseFrom upd (fromInteger l) n)

101 <|> do cmd ["am", "addmissing"]; P.whiteSpace;

102 upd <- option False (do P.lchar '!'; return True)

103 l <- P.natural; n <- P.name;

104 return (AddMissing upd (fromInteger l) n)

105 <|> do cmd ["mw", "makewith"]; P.whiteSpace;

106 upd <- option False (do P.lchar '!'; return True)

107 l <- P.natural; n <- P.name;

108 return (MakeWith upd (fromInteger l) n)

109 <|> do cmd ["ml", "makelemma"]; P.whiteSpace;

110 upd <- option False (do P.lchar '!'; return True)

111 l <- P.natural; n <- P.name;

112 return (MakeLemma upd (fromInteger l) n)

113 <|> do cmd ["ps", "proofsearch"]; P.whiteSpace;

114 upd <- option False (do P.lchar '!'; return True)

115 l <- P.natural; n <- P.name;

116 hints <- many P.fnName

117 return (DoProofSearch upd True (fromInteger l) n hints)

118 <|> do cmd ["ref", "refine"]; P.whiteSpace;

119 upd <- option False (do P.lchar '!'; return True)

120 l <- P.natural; n <- P.name;

121 hint <- P.fnName

122 return (DoProofSearch upd False (fromInteger l) n [hint])

123 <|> do cmd ["p", "prove"]; n <- P.name; eof; return (Prove n)

124 <|> do cmd ["m", "metavars"]; eof; return Metavars

125 <|> do cmd ["a", "addproof"]; do n <- option Nothing (do x <- P.name;

126 return (Just x))

127 eof; return (AddProof n)

128 <|> do cmd ["x"]; P.whiteSpace; t <- P.fullExpr defaultSyntax; return (ExecVal t)

129 <|> do cmd ["patt"]; P.whiteSpace; t <- P.fullExpr defaultSyntax; return (Pattelab t)

130 <|> do cmd ["errorhandlers"]; eof ; return ListErrorHandlers

131 <|> do cmd ["consolewidth"]; w <- pConsoleWidth ; return (SetConsoleWidth w)

132 <|> do cmd ["apropos"]; str <- many anyChar ; return (Apropos str)

133 <|> do cmd ["wc", "whocalls"]; P.whiteSpace; n <- P.fnName ; return (WhoCalls n)

134 <|> do cmd ["cw", "callswho"]; P.whiteSpace; n <- P.fnName ; return (CallsWho n)

135 <|> do cmd ["mkdoc"]; str <- many anyChar; return (MakeDoc str)

136 <|> do cmd ["printdef"]; P.whiteSpace; n <- P.fnName; return (PrintDef n)

137 <|> do P.whiteSpace; do eof; return NOP

138 <|> do t <- P.fullExpr defaultSyntax; return (Eval t)

139

140 where toPath n = foldl1' (</>) $ splitOn "." n

141

142pOption :: P.IdrisParser Opt

143pOption = do discard (P.symbol "errorcontext"); return ErrContext

144 <|> do discard (P.symbol "showimplicits"); return ShowImpl

145 <|> do discard (P.symbol "originalerrors"); return ShowOrigErr

146 <|> do discard (P.symbol "autosolve"); return AutoSolve

147 <|> do discard (P.symbol "nobanner") ; return NoBanner

148 <|> do discard (P.symbol "warnreach"); return WarnReach

149

150codegenOption :: P.IdrisParser Codegen

151codegenOption = do discard (P.symbol "bytecode"); return Bytecode

152 <|> do x <- P.identifier

153 return (Via (map toLower x))

154

155pConsoleWidth :: P.IdrisParser ConsoleWidth

156pConsoleWidth = do discard (P.symbol "auto"); return AutomaticWidth

157 <|> do discard (P.symbol "infinite"); return InfinitelyWide

158 <|> do n <- fmap fromInteger P.natural; return (ColsWide n)

159

160colours :: [(String, Maybe Color)]

161colours = [ ("black", Just Black)

162 , ("red", Just Red)

163 , ("green", Just Green)

164 , ("yellow", Just Yellow)

165 , ("blue", Just Blue)

166 , ("magenta", Just Magenta)

167 , ("cyan", Just Cyan)

168 , ("white", Just White)

169 , ("default", Nothing)

170 ]

171

172pColour :: P.IdrisParser (Maybe Color)

173pColour = doColour colours

174 where doColour [] = fail "Unknown colour"

175 doColour ((s, c):cs) = (try (P.symbol s) >> return c) <|> doColour cs

176

177pColourMod :: P.IdrisParser (IdrisColour -> IdrisColour)

178pColourMod = try (P.symbol "vivid" >> return doVivid)

179 <|> try (P.symbol "dull" >> return doDull)

180 <|> try (P.symbol "underline" >> return doUnderline)

181 <|> try (P.symbol "nounderline" >> return doNoUnderline)

182 <|> try (P.symbol "bold" >> return doBold)

183 <|> try (P.symbol "nobold" >> return doNoBold)

184 <|> try (P.symbol "italic" >> return doItalic)

185 <|> try (P.symbol "noitalic" >> return doNoItalic)

186 <|> try (pColour >>= return . doSetColour)

187 where doVivid i = i { vivid = True }

188 doDull i = i { vivid = False }

189 doUnderline i = i { underline = True }

190 doNoUnderline i = i { underline = False }

191 doBold i = i { bold = True }

192 doNoBold i = i { bold = False }

193 doItalic i = i { italic = True }

194 doNoItalic i = i { italic = False }

195 doSetColour c i = i { colour = c }

196

197-- | Generate the colour type names using the default Show instance.

198colourTypes :: [(String, ColourType)]

199colourTypes = map (\x -> ((map toLower . reverse . drop 6 . reverse . show) x, x)) $

200 enumFromTo minBound maxBound

201

202pColourType :: P.IdrisParser ColourType

203pColourType = doColourType colourTypes

204 where doColourType [] = fail $ "Unknown colour category. Options: " ++

205 (concat . intersperse ", " . map fst) colourTypes

206 doColourType ((s,ct):cts) = (try (P.symbol s) >> return ct) <|> doColourType cts

207

208pSetColourCmd :: P.IdrisParser Command

209pSetColourCmd = (do c <- pColourType

210 let defaultColour = IdrisColour Nothing True False False False

211 opts <- sepBy pColourMod (P.whiteSpace)

212 let colour = foldr ($) defaultColour $ reverse opts

213 return $ SetColour c colour)

214 <|> try (P.symbol "on" >> return ColourOn)

215 <|> try (P.symbol "off" >> return ColourOff)