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<!doctype html>
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<title>CodeMirror: LiveScript mode</title>
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<meta charset="utf-8" />
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<link rel=stylesheet href="../../doc/docs.css">
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<link rel="stylesheet" href="../../lib/codemirror.css">
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<link rel="stylesheet" href="../../theme/solarized.css">
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<script src="../../lib/codemirror.js"></script>
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<script src="livescript.js"></script>
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<style>
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.CodeMirror {
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font-size: 80%;
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border-top: 1px solid silver;
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border-bottom: 1px solid silver;
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}
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</style>
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<div id=nav>
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<a href="http://codemirror.net">
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<h1>CodeMirror</h1>
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<img id=logo src="../../doc/logo.png">
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</a>
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<ul>
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<li>
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<a href="../../index.html">Home</a>
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<li>
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<a href="../../doc/manual.html">Manual</a>
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<li>
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<a href="https://github.com/codemirror/codemirror">Code</a>
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</ul>
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<ul>
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<li>
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<a href="../index.html">Language modes</a>
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<li>
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<a class=active href="#">LiveScript</a>
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</ul>
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</div>
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<article>
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<h2>LiveScript mode</h2>
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<form>
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<textarea id="code" name="code"> # LiveScript mode for CodeMirror # The following script, prelude.ls, is used to # demonstrate LiveScript mode for CodeMirror. # https://github.com/gkz/prelude-ls export objToFunc = objToFunc = (obj) -> (key) -> obj[key] export each = (f, xs) -->
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if typeof! xs is \Object for , x of xs then f x else for x in xs then f x xs export map = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object {[key, f x] for key, x of xs} else result = [f x for x in
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xs] if type is \String then result * '' else result export filter = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object {[key, x] for key, x of xs when f x} else result = [x for x in xs when f x] if
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type is \String then result * '' else result export reject = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object {[key, x] for key, x of xs when not f x} else result = [x for x in xs when not f x] if
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type is \String then result * '' else result export partition = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object passed = {} failed = {} for key, x of xs (if f x then passed else failed)[key] = x
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else passed = [] failed = [] for x in xs (if f x then passed else failed)push x if type is \String passed *= '' failed *= '' [passed, failed] export find = (f, xs) --> f = objToFunc f if typeof! f isnt \Function if typeof! xs is \Object for
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, x of xs when f x then return x else for x in xs when f x then return x void export head = export first = (xs) -> return void if not xs.length xs.0 export tail = (xs) -> return void if not xs.length xs.slice 1 export last = (xs) -> return
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void if not xs.length xs[*-1] export initial = (xs) -> return void if not xs.length xs.slice 0 xs.length - 1 export empty = (xs) -> if typeof! xs is \Object for x of xs then return false return yes not xs.length export values = (obj) -> [x
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for , x of obj] export keys = (obj) -> [x for x of obj] export len = (xs) -> xs = values xs if typeof! xs is \Object xs.length export cons = (x, xs) --> if typeof! xs is \String then x + xs else [x] ++ xs export append = (xs, ys) --> if typeof!
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ys is \String then xs + ys else xs ++ ys export join = (sep, xs) --> xs = values xs if typeof! xs is \Object xs.join sep export reverse = (xs) -> if typeof! xs is \String then (xs / '')reverse! * '' else xs.slice!reverse! export fold = export
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foldl = (f, memo, xs) --> if typeof! xs is \Object for , x of xs then memo = f memo, x else for x in xs then memo = f memo, x memo export fold1 = export foldl1 = (f, xs) --> fold f, xs.0, xs.slice 1 export foldr = (f, memo, xs) --> fold f,
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memo, xs.slice!reverse! export foldr1 = (f, xs) --> xs.=slice!reverse! fold f, xs.0, xs.slice 1 export unfoldr = export unfold = (f, b) --> if (f b)? [that.0] ++ unfoldr f, that.1 else [] export andList = (xs) -> for x in xs when not x return
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false true export orList = (xs) -> for x in xs when x return true false export any = (f, xs) --> f = objToFunc f if typeof! f isnt \Function for x in xs when f x return yes no export all = (f, xs) --> f = objToFunc f if typeof! f isnt \Function
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for x in xs when not f x return no yes export unique = (xs) -> result = [] if typeof! xs is \Object for , x of xs when x not in result then result.push x else for x in xs when x not in result then result.push x if typeof! xs is \String then
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result * '' else result export sort = (xs) -> xs.concat!sort (x, y) -> | x > y => 1 | x
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< y=> -1 | _ => 0 export sortBy = (f, xs) --> return [] unless xs.length xs.concat!sort f export compare = (f, x, y) --> | (f x) > (f y) => 1 | (f x)
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< (f y)=> -1 | otherwise => 0 export sum = (xs) -> result = 0 if typeof! xs is \Object for , x of xs then result += x else for x in xs then result += x result export product = (xs) -> result = 1 if typeof! xs is \Object for , x of xs then result
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*= x else for x in xs then result *= x result export mean = export average = (xs) -> (sum xs) / len xs export concat = (xss) -> fold append, [], xss export concatMap = (f, xs) --> fold ((memo, x) -> append memo, f x), [], xs export
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listToObj = (xs) -> {[x.0, x.1] for x in xs} export maximum = (xs) -> fold1 (>?), xs export minimum = (xs) -> fold1 (
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<?), xs
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export scan = export scanl = (f, memo, xs) -->
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last = memo
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if typeof! xs is \Object
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then [memo] ++ [last = f last, x for , x of xs]
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else [memo] ++ [last = f last, x for x in xs]
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export scan1 = export scanl1 = (f, xs) --> scan f, xs.0, xs.slice 1
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export scanr = (f, memo, xs) -->
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xs.=slice!reverse!
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scan f, memo, xs .reverse!
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export scanr1 = (f, xs) -->
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xs.=slice!reverse!
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scan f, xs.0, xs.slice 1 .reverse!
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export replicate = (n, x) -->
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result = []
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i = 0
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while i < n, ++i then result.push x
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result
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export take = (n, xs) -->
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| n <= 0
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if typeof! xs is \String then '' else []
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| not xs.length => xs
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| otherwise => xs.slice 0, n
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export drop = (n, xs) -->
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| n <= 0 => xs
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| not xs.length => xs
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| otherwise => xs.slice n
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export splitAt = (n, xs) --> [(take n, xs), (drop n, xs)]
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export takeWhile = (p, xs) -->
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return xs if not xs.length
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p = objToFunc p if typeof! p isnt \Function
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result = []
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for x in xs
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break if not p x
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result.push x
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if typeof! xs is \String then result * '' else result
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export dropWhile = (p, xs) -->
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return xs if not xs.length
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p = objToFunc p if typeof! p isnt \Function
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i = 0
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for x in xs
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break if not p x
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++i
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drop i, xs
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export span = (p, xs) --> [(takeWhile p, xs), (dropWhile p, xs)]
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export breakIt = (p, xs) --> span (not) << p, xs
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export zip = (xs, ys) -->
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result = []
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for zs, i in [xs, ys]
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for z, j in zs
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result.push [] if i is 0
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result[j]?push z
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result
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export zipWith = (f,xs, ys) -->
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f = objToFunc f if typeof! f isnt \Function
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if not xs.length or not ys.length
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[]
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else
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[f.apply this, zs for zs in zip.call this, xs, ys]
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export zipAll = (...xss) ->
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result = []
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for xs, i in xss
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for x, j in xs
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result.push [] if i is 0
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result[j]?push x
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result
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export zipAllWith = (f, ...xss) ->
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f = objToFunc f if typeof! f isnt \Function
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if not xss.0.length or not xss.1.length
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[]
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else
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[f.apply this, xs for xs in zipAll.apply this, xss]
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export compose = (...funcs) ->
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->
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args = arguments
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for f in funcs
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args = [f.apply this, args]
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args.0
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export curry = (f) ->
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curry$ f # using util method curry$ from livescript
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export id = (x) -> x
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export flip = (f, x, y) --> f y, x
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export fix = (f) ->
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( (g, x) -> -> f(g g) ...arguments ) do
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(g, x) -> -> f(g g) ...arguments
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export lines = (str) ->
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return [] if not str.length
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str / \\n
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export unlines = (strs) -> strs * \\n
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export words = (str) ->
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return [] if not str.length
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str / /[ ]+/
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export unwords = (strs) -> strs * ' '
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export max = (>?)
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export min = (<?)
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export negate = (x) -> -x
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export abs = Math.abs
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export signum = (x) ->
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| x < 0 => -1
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| x > 0 => 1
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| otherwise => 0
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export quot = (x, y) --> ~~(x / y)
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export rem = (%)
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export div = (x, y) --> Math.floor x / y
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export mod = (%%)
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export recip = (1 /)
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export pi = Math.PI
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export tau = pi * 2
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export exp = Math.exp
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export sqrt = Math.sqrt
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# changed from log as log is a
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# common function for logging things
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export ln = Math.log
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export pow = (^)
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export sin = Math.sin
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export tan = Math.tan
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export cos = Math.cos
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export asin = Math.asin
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export acos = Math.acos
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export atan = Math.atan
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export atan2 = (x, y) --> Math.atan2 x, y
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# sinh
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# tanh
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# cosh
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# asinh
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# atanh
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# acosh
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export truncate = (x) -> ~~x
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export round = Math.round
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export ceiling = Math.ceil
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export floor = Math.floor
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export isItNaN = (x) -> x isnt x
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export even = (x) -> x % 2 == 0
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export odd = (x) -> x % 2 != 0
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export gcd = (x, y) -->
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x = Math.abs x
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y = Math.abs y
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until y is 0
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z = x % y
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x = y
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y = z
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x
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export lcm = (x, y) -->
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Math.abs Math.floor (x / (gcd x, y) * y)
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# meta
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export installPrelude = !(target) ->
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unless target.prelude?isInstalled
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target <<< out$ # using out$ generated by livescript
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target <<< target.prelude.isInstalled = true
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export prelude = out$
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</textarea></form>
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<script>
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var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
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theme: "solarized light",
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lineNumbers: true
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});
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</script>
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<p><strong>MIME types defined:</strong> <code>text/x-livescript</code>.</p>
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<p>The LiveScript mode was written by Kenneth Bentley.</p>
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</article>
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