ColaScript is a language that compiles in JavaScript. This language is similar to Dart, CoffeeScript, Python and PHP, with some original ideas. Compiler based on UglifyJS2. In present time compiler in development. Play with language you can here.

to do:

• semicolon is always required, status: done

Operators:

Unary

• varname?? and alternative isset varname - which is better? status: done

    bool exist = SOME??;
    bool exist2 = isset SOME;
  

• clone, status: done

    a = [];
    b = [];
    Array b = clone a;
    b[0] = 584; // a == []
  

  if object have method __clone__, object will be copied with it.

Binary

• **, status: done

    int pow = 5 ** 2; // 25
  

• %%, status: done

    int modulo = 5 %% 3; // 2
  

• ?=, status: done

    var undef, def = 5;
  
    def ?= undef; // def == 5
    undef = 6;
    def ?= undef; // def == 6
  

• a ? b, status: done

    var a = undefined, b = 3;
  
    a ? b == 3;
    a = 11;
    a ? b == 1;
  

• is, status: done

    bool isRegExp = /[^\d]+/g is RegExp; // true
  

• isnt, status: done

    bool isntString = 3.14 isnt String; // true
  

Multiple

• ..:, status: done

    Object profile = { 
    	name : "dan",
    	nick : "dan",
    	friends : [
    		{ name : "eric", nick : "eric" }
    	], 
    	"info" : "coder"
    }
    	..name += "iil"
    	..nick += "green"
    	..friends[0]:
    		..name = profile.friends[0].name.capitalize()
    		..nick += "bro";
     	..info += ", student"; 
  

• a > b > c, status: done

    if( 0 < x < 100 ) console.log("x E (0; 100)");
  

Compiler

• @require

    @require "./library/jquery.js", "./library/underscore.js" 
  

• @use

    @use strict
    @use asmjs
    @use closure
  

• @if @end_if @else

    @if target == 'web'
    	@require './main.cola'
    @else
    	@require './mobile/main.cola'
    @end_if
  

Expressions

• switch assignment, status: done!

    String weather = switch(temperature){
    	when -10: 'cold';
    	when 20: 'normal';
    	when 35: 'hot';
    };
  

Vars

• declaration with type, status: done, only declaration

    int b = 584;
    Array arr = [];
    Object obj = {};
    String str = "";
  

• multiple assignment, status: done

    [a, b, c] = [b, c, a];
    var {poet: {String name, address: [street, city]}} = futurists;
    [a, ..., b] = someArray; 
  

bool

• aliases, status: done

    yes === on === true;
    no === off === false; 
  

String

• ` new string `, status: done

    String name = `dangreen`; 
  

• multiline, status: done

    String ml = "
  
    Lorem ipsum,
    Lorem ipsum.
  
    ";
  

• raw, status: done

    String str = r"\n \r"; // "\\n \\r" 
  

• templating, status: done

    String name = "dan";
  
    console.log("My name is @name."); // My name is dan.
    name = "eric";  
    console.log("My name is @name."); // My name is eric.
    console.log("My name is @{name.capitalize()} or {{name.capitalize()}}"); // My name is Eric.   
  

RegExp

• multiline ( and x flag ), status: done

    RegExp re = /
    	([^\d]+)-
    	(\w+)
    /gx; 
  

Arrays

• pushing and getting last, status: done

    var arr = [3, 5, 6, 7];
    arr[] = 4; // [3, 5, 6, 7, 4]
    console.log(arr[]); // 4
  

• part assignment, status: done

    arr[0..2] = [0,1]; // [0, 1, 7, 4]
    arr[0..2] = [];    // [7, 4]
  

• slice, status: done

    arr = arr[0..2]; 
  

• inline array ranging, status: done

    arr = [10..1]; // [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
    arr = [1..10]; // [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]     
  

Functions

• without function keyword, status: done

    void main(){
    	console.log('Hello World!');
    }
  

• binding toplevel main functions to onload event, status: done

    // lib.cola
  
    main(){
    	console.log('Hello World from lib.cola!');
    }
  
    // main.cola
  
    require "./lib.cola";
  
    main(){
    	console.log('Hello World!');
    }
  

• arrow functions, status: done

    print(str) => console.log(str);
  

• named arguments, status: done

    hello(String name:) => console.log("Hello @name!");
    hello(name: 'dangreen'); // Hello dangreen!
  
    hello(name: "World") => console.log("Hello @name!");
    hello(); // Hello World!
  

• defaults for positional arguments, status: done

    hello(String name = "World") => console.log("Hello @name!");
    hello('dangreen'); // Hello dangreen!
    hello(); // Hello World!
  

• some arguments into array, status: done

    main(name, skills...){
    	console.log("My name is @name, my skills:");
    	skills.forEach((skill) => console.log("@skill,"));
    }
  

Classes

• classes

• singletones

• injectors

    class A {
  
        private int a = 123;
    	protected var o = {};
  
    	readonly String about = "class";
  
    	A(a){
    		about = "some else";
    	}
  
    	static Hello() => "hello!";
  
    	public String about() => about;
    }
  
    class B extends A {
  
    	B(){
    		parent();
    		about += "!";  
    	}
  
    	B.anotherConstructor(){
    		about = "ups!";  
    	}
  
    	get some => "some " + about;
    	set some(val) => about += val; 
    }
  
    singleton S { // in fact this is object
    	int x = 45;
    	String s = "txt";
  
    	say(some){
    		alert(some);
    	}
  
    	int operator[](int index) => index + 584;
    	operator[]=(int index, int val) => x = index + val;
  
    	String operator.(String key) => key + "!";
    	operator.(String key, String value) => s = "@key @value";
  
    }
  
    injector String {
    	String replaceAll(a, b){
    		String res = this;
    		while(res.indexOf(a) != -1) res = res.replace(a, b);
    		return res;
    	}
    }
  
    // or 
  
    String String::replaceAll(a, b){
    	String res = this;
    	while(res.indexOf(a) != -1) res = res.replace(a, b);
    	return res;
    }
  

Statistic

• 33 features ( without classes )
• 30 done