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A proposition for some simple syntactic sugar that compiles to Javascript
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Goal: | |
1. Not reinventing JavaScript. Minimalistic sugar. | |
2. Aleviate the verbosness of the language especially with function definition, semicolon, and the var keyword | |
3. Avoid CoffeScript error http://lucumr.pocoo.org/2011/12/22/implicit-scoping-in-coffeescript/ | |
Features? Implicit return? | |
Implementation? PEG.js http://pegjs.majda.cz/online | |
> means sugar in | |
< means Js out | |
> list = [1, 2, 3, 4, 5] | |
< var list = [1, 2, 3, 4, 5]; | |
> | |
for key, value in list | |
console.log(key, value) | |
< | |
for (var key in list) { | |
if(!list.hasOwnProperty(key)){ | |
continue; | |
} | |
var value = list[key]; | |
console.log(key, value); | |
} | |
> | |
if 1 == 1 | |
alert(1) | |
elseif 1 == 2 | |
alert(2) | |
else | |
alert(3) | |
< | |
if(1 == 1) { | |
alert(1); | |
} else if (1 == 2) { | |
alert(2); | |
} else { | |
alert(3); | |
} | |
> | |
def myFunction(a, b, c) | |
alert(a, b, c) | |
variable = a | |
< | |
function myFunction(a, b, c) { | |
alert(a, b, c); | |
var variable = a; | |
} | |
> | |
fun = def() return 1 + 1 | |
> | |
fun = def | |
return 1 + 1; | |
< all give this | |
var fun = function() { | |
return 1 + 1; | |
} | |
> | |
[1,2,3].map(def(x) return x * x) | |
< | |
[1,2,3].map(function(x) { | |
return x * x; | |
}) | |
> | |
def f1() | |
a = 1 | |
c = 5 | |
def f2() | |
a = 2 | |
c <- 4 | |
< | |
function f1() { | |
var a = 1; | |
var c = 5; | |
function f2() { | |
var a = 2; | |
c = 4; | |
} | |
} | |
> | |
class Test(a) | |
def init(a) | |
this.a = a | |
obj = Test(1) | |
< | |
function Test(a) { | |
this.a = a; | |
} | |
obj = new Test(1); | |
> | |
str = "hello | |
world" | |
< | |
var str = "hello\ | |
world"; | |
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