diff options
Diffstat (limited to 'plugins/LocalFilesEditor/codemirror/mode/haskell/haskell.js')
| -rw-r--r-- | plugins/LocalFilesEditor/codemirror/mode/haskell/haskell.js | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/plugins/LocalFilesEditor/codemirror/mode/haskell/haskell.js b/plugins/LocalFilesEditor/codemirror/mode/haskell/haskell.js new file mode 100644 index 000000000..107885c20 --- /dev/null +++ b/plugins/LocalFilesEditor/codemirror/mode/haskell/haskell.js @@ -0,0 +1,242 @@ +CodeMirror.defineMode("haskell", function(cmCfg, modeCfg) { + + function switchState(source, setState, f) { + setState(f); + return f(source, setState); + } + + // These should all be Unicode extended, as per the Haskell 2010 report + var smallRE = /[a-z_]/; + var largeRE = /[A-Z]/; + var digitRE = /[0-9]/; + var hexitRE = /[0-9A-Fa-f]/; + var octitRE = /[0-7]/; + var idRE = /[a-z_A-Z0-9']/; + var symbolRE = /[-!#$%&*+.\/<=>?@\\^|~:]/; + var specialRE = /[(),;[\]`{}]/; + var whiteCharRE = /[ \t\v\f]/; // newlines are handled in tokenizer + + function normal(source, setState) { + if (source.eatWhile(whiteCharRE)) { + return null; + } + + var ch = source.next(); + if (specialRE.test(ch)) { + if (ch == '{' && source.eat('-')) { + var t = "hs-comment"; + if (source.eat('#')) { + t = "hs-pragma"; + } + return switchState(source, setState, ncomment(t, 1)); + } + return "hs-special"; + } + + if (ch == '\'') { + if (source.eat('\\')) { + source.next(); // should handle other escapes here + } + else { + source.next(); + } + if (source.eat('\'')) { + return "hs-char"; + } + return "hs-error"; + } + + if (ch == '"') { + return switchState(source, setState, stringLiteral); + } + + if (largeRE.test(ch)) { + source.eatWhile(idRE); + if (source.eat('.')) { + return "hs-qualifier"; + } + return "hs-conid"; + } + + if (smallRE.test(ch)) { + source.eatWhile(idRE); + return "hs-varid"; + } + + if (digitRE.test(ch)) { + if (ch == '0') { + if (source.eat(/[xX]/)) { + source.eatWhile(hexitRE); // should require at least 1 + return "hs-integer"; + } + if (source.eat(/[oO]/)) { + source.eatWhile(octitRE); // should require at least 1 + return "hs-integer"; + } + } + source.eatWhile(digitRE); + var t = "hs-integer"; + if (source.eat('.')) { + t = "hs-float"; + source.eatWhile(digitRE); // should require at least 1 + } + if (source.eat(/[eE]/)) { + t = "hs-float"; + source.eat(/[-+]/); + source.eatWhile(digitRE); // should require at least 1 + } + return t; + } + + if (symbolRE.test(ch)) { + if (ch == '-' && source.eat(/-/)) { + source.eatWhile(/-/); + if (!source.eat(symbolRE)) { + source.skipToEnd(); + return "hs-comment"; + } + } + var t = "hs-varsym"; + if (ch == ':') { + t = "hs-consym"; + } + source.eatWhile(symbolRE); + return t; + } + + return "hs-error"; + } + + function ncomment(type, nest) { + if (nest == 0) { + return normal; + } + return function(source, setState) { + var currNest = nest; + while (!source.eol()) { + ch = source.next(); + if (ch == '{' && source.eat('-')) { + ++currNest; + } + else if (ch == '-' && source.eat('}')) { + --currNest; + if (currNest == 0) { + setState(normal); + return type; + } + } + } + setState(ncomment(type, currNest)); + return type; + } + } + + function stringLiteral(source, setState) { + while (!source.eol()) { + var ch = source.next(); + if (ch == '"') { + setState(normal); + return "hs-string"; + } + if (ch == '\\') { + if (source.eol() || source.eat(whiteCharRE)) { + setState(stringGap); + return "hs-string"; + } + if (source.eat('&')) { + } + else { + source.next(); // should handle other escapes here + } + } + } + setState(normal); + return "hs-error"; + } + + function stringGap(source, setState) { + if (source.eat('\\')) { + return switchState(source, setState, stringLiteral); + } + source.next(); + setState(normal); + return "hs-error"; + } + + + var wellKnownWords = (function() { + var wkw = {}; + function setType(t) { + return function () { + for (var i = 0; i < arguments.length; i++) + wkw[arguments[i]] = t; + } + } + + setType("hs-reservedid")( + "case", "class", "data", "default", "deriving", "do", "else", "foreign", + "if", "import", "in", "infix", "infixl", "infixr", "instance", "let", + "module", "newtype", "of", "then", "type", "where", "_"); + + setType("hs-reservedop")( + "\.\.", ":", "::", "=", "\\", "\"", "<-", "->", "@", "~", "=>"); + + setType("hs-prelude-varsym")( + "!!", "$!", "$", "&&", "+", "++", "-", ".", "/", "/=", "<", "<=", "=<<", + "==", ">", ">=", ">>", ">>=", "^", "^^", "||", "*", "**"); + + setType("hs-prelude-conid")( + "Bool", "Bounded", "Char", "Double", "EQ", "Either", "Enum", "Eq", + "False", "FilePath", "Float", "Floating", "Fractional", "Functor", "GT", + "IO", "IOError", "Int", "Integer", "Integral", "Just", "LT", "Left", + "Maybe", "Monad", "Nothing", "Num", "Ord", "Ordering", "Rational", "Read", + "ReadS", "Real", "RealFloat", "RealFrac", "Right", "Show", "ShowS", + "String", "True"); + + setType("hs-prelude-varid")( + "abs", "acos", "acosh", "all", "and", "any", "appendFile", "asTypeOf", + "asin", "asinh", "atan", "atan2", "atanh", "break", "catch", "ceiling", + "compare", "concat", "concatMap", "const", "cos", "cosh", "curry", + "cycle", "decodeFloat", "div", "divMod", "drop", "dropWhile", "either", + "elem", "encodeFloat", "enumFrom", "enumFromThen", "enumFromThenTo", + "enumFromTo", "error", "even", "exp", "exponent", "fail", "filter", + "flip", "floatDigits", "floatRadix", "floatRange", "floor", "fmap", + "foldl", "foldl1", "foldr", "foldr1", "fromEnum", "fromInteger", + "fromIntegral", "fromRational", "fst", "gcd", "getChar", "getContents", + "getLine", "head", "id", "init", "interact", "ioError", "isDenormalized", + "isIEEE", "isInfinite", "isNaN", "isNegativeZero", "iterate", "last", + "lcm", "length", "lex", "lines", "log", "logBase", "lookup", "map", + "mapM", "mapM_", "max", "maxBound", "maximum", "maybe", "min", "minBound", + "minimum", "mod", "negate", "not", "notElem", "null", "odd", "or", + "otherwise", "pi", "pred", "print", "product", "properFraction", + "putChar", "putStr", "putStrLn", "quot", "quotRem", "read", "readFile", + "readIO", "readList", "readLn", "readParen", "reads", "readsPrec", + "realToFrac", "recip", "rem", "repeat", "replicate", "return", "reverse", + "round", "scaleFloat", "scanl", "scanl1", "scanr", "scanr1", "seq", + "sequence", "sequence_", "show", "showChar", "showList", "showParen", + "showString", "shows", "showsPrec", "significand", "signum", "sin", + "sinh", "snd", "span", "splitAt", "sqrt", "subtract", "succ", "sum", + "tail", "take", "takeWhile", "tan", "tanh", "toEnum", "toInteger", + "toRational", "truncate", "uncurry", "undefined", "unlines", "until", + "unwords", "unzip", "unzip3", "userError", "words", "writeFile", "zip", + "zip3", "zipWith", "zipWith3"); + + return wkw; + })(); + + + + return { + startState: function () { return { f: normal }; }, + copyState: function (s) { return { f: s.f }; }, + + token: function(stream, state) { + var t = state.f(stream, function(s) { state.f = s; }); + var w = stream.current(); + return (w in wellKnownWords) ? wellKnownWords[w] : t; + } + }; + +}); + +CodeMirror.defineMIME("text/x-haskell", "haskell"); |