ObjectScript - a new programming language

, ? , : . , — . .



ObjectScript — - . 459 (, ) source\objectscript.h source\objectscript.cpp. . ObjectScript — , C++.



ObjectScript , JavaScript, Lua PHP. , JavaScript, — Lua, — PHP.



, ObjectScript .

	x = 12;
	y = "Hello World!";

?

	x = 12
	y = "Hello World!"

ObjectScript ( , ), (;) .

, :

	print(5, " differences")

?

	print(5 " differences")

ObjectScript . , concat, , :

	var s = concat("name: " name ", count: " count ", time: " time)

! name, count time — . , .. ( ) , concat , .



, :

	print({firstname:"Ivan", lastname:"Petrov"})

JavaScript . ObjectScript, . ?

	print {firstname:"Ivan", lastname:"Petrov"}

?! Lua. , :

	print "Hello World!"

!

. ? ?

	print {firstname:"Ivan" lastname:"Petrov"}

, , :

	print {firstname="Ivan" lastname="Petrov"}

.. ( ) , . , , (;) . , , , ObjectScript:

	a = {x=1, y=3; "zero" "one", "two" last:7,}

, , . . :

	print a[1]

one. , , :

	a = {[2+3]="five" y=3}

.. . :

	print a[5]

five



, ( , ).



, , :

	a = {x=1 y=2}
	b = {[a]="powerful" 7="greate"}
	print b[a]

powerful, . , , .

— . JavaScript :

	a = [10, 20, 30, 40]

, , — :

	a = [10 20 30 40]

ObjectScript.

ObjectScript :

	i, j, k = 0, 1, 3

i 0, j 1, k — 3. :

	i, j = j, i

. , , , :

	var test = function(){ return 1, 2 }
	var a, b = test()

test , a 1, b — 2. , , — null

	var a, b, c = test()
	print(a, b, c)

: 1 2 null

- . , :

	obj = { null awesome=true 12 "excellent" }
	for(k, v in obj){
		print( k " --> " v )
	}

:

0 --> null
awesome --> true
1 --> 12
2 --> excellent

ObjectScript for in, , :

	obj = { null awesome=true 12 "excellent" };
	{
		var iter_func = obj.__iter()
		for(var iter_valid;;){
			iter_valid, k, v = iter_func()
			if(!iter_valid) break
			print( k " --> " v )
		}
	}

- obj __iter, :

	var iter_func = obj.__iter()

:

	iter_valid, k, v = iter_func()

, true, , , . :

	if(!iter_valid) break

, break .



, . , , , — . , , , :

	obj = { null awesome=true 12 "excellent" }
	for(k in obj){
		print k
	}

, . ObjectScript :

	Array.__iter = function(){
		var i, self = 0, this
		return function(){
			if(i < #self){
				return true, i, self[i++]
			}
		}
	}

, -. Array — , . ++ class Array. , Array . :

	print [1 2 3].prototype === Array

true ( === ). . Array __iter ( ). (. closure). , ObjectScript — - ( ). , i, self.

	var i, self = 0, this

i 0, self this ( , , ).

	return function(){
		if(i < #self){
			return true, i, self[i++]
		}
	}

, . , (# — , ), , true (, ), . . , .. . , , iter_valid, null :

	if(!iter_valid) break

iter_valid , , .



.

	var range = function(a, b){
		return function(){
			if(a <= b){
				return true, a++
			}
		}
	}
	for(var i in range(10, 13)){
		print( "i = ", i )
	}

:

	i = 10
	i = 11
	i = 12
	i = 13

« , __iter?» . , :

	Function.__iter = function(){ return this }

Function — , , call apply, JavaScript.

- () ObjectScript

, .



:

	Person = {
		__construct = function(firstname, lastname){
			this.firstname = firstname
			this.lastname = lastname
		}
		__get@fullname = function(){
			return this.firstname .. " " .. this.lastname
		}
		walk = function(){
			print this.fullname .. " is walking!"
		}
	}

:

	var p = Person("James", "Bond")

Person — , , , ObjectScript __construct. :

	var p = {}
	p.prototype = Person
	p.__construct("James", "Bond")

:

	p.walk()
	print p

:

James Bond is walking!
{"firstname":"James","lastname":"Bond"}

__get@fullname, walk:

	__get@fullname = function(){
		return this.firstname .. " " .. this.lastname
	}
	walk = function(){
		print this.fullname .. " is walking!"
	}

__get@fullname fullname. , , getter- setter-.



, __get@fullname @, ObjectScript , $ .

Person.

	//   IvanPerson
	var IvanPerson = extends Person {
		__construct = function(){
			super("Ivan", "Petrov")
		}
	}
	var p = IvanPerson() //    IvanPerson
	p.walk()
	print p

:

Ivan Petrov is walking!
{"firstname":"Ivan","lastname":"Petrov"}

extends, exp1 exp2, , :

	(function(exp1, exp2){ 
		exp2.prototype = exp1 
		return exp2 
	})()

:

	super("Ivan", "Petrov")

super () , , — __construct, .

, :

	var vec3 = {
		__construct = function(x, y, z){
			this.x = x
			this.y = y
			this.z = z
		}
		__add = function(a, b){
			return vec3(a.x + b.x, a.y + b.y, a.z + b.z)
		}
		__mul = function(a, b){
			return vec3(a.x * b.x, a.y * b.y, a.z * b.z)
		}
	}

	var v1 = vec3(10 20 30)
	var v2 = vec3(1 2 3)
	var v3 = v1 + v2 * v2
	print v3

: {«x»:11,«y»:24,«z»:39}

, getter- setter-

— (, , ...), , .



(getter) — , (setter) — . ObjectScript , , .

	a = {
		_color = "red"
		__get@color = function(){ return this._color }
		__set@color = function(v){ this._color = v }
	}
	
	print a["color"]
	a.color = "blue"
	print a.color

:

red
blue

? color ObjectScript color. , . , __get@color, — , ObjectScript . , , ObjectScript __get. , ObjectScript . , null .



, , __get __set. :

	a = {
		_color = "white"
		__get = function(name){ 
			if(name == "color")
				return this._color 
		}
		__set = function(name, v){
			if(name == "color")
				this._color = v
		}
		__del = function(name){
			if(name == "color")
				delete this._color
		}
	}
	
	print a.color
	a.color = "green"
	print a.color
	delete a.color
	print a.color

:

white
green
null

delete, __del.

ObjectScript ( ) , :

	print a.color
	print a["color"]

, ? ObjectScript !

	a = {
		_matrix = {}
		__getdim = function(x, y){
			return this._matrix[y*4 + x]
		}
		__setdim = function(value, x, y){
			this._matrix[y*4 + x] = value
		}
		__deldim = function(x, y){
			delete this._matrix[y*4 + x]
		}
	}
	a[1, 2] = 5		//     a.__setdim(5, 1, 2)
	print a[1, 2]	// print(a.__getdim(1, 2))
	delete a[1, 2]	// a.__deldim(1, 2)
	print a[1, 2]	// print(a.__getdim(1, 2))

:

5
null

__setdim, , — ( ).

?

	b = a[]
	a[] = 2
	delete a[]

! ObjectScript : __getempty, __setempty, __delempty. , .

.



, :

	print function(a b c){ return a + b * c }(1 2 3)

7



arguments — , , ... ( ) — , .



# __len. , — . Object :

	Object.__get@length = function(){ return #this }

.. , , Object, length, , , JavaScript.



** — .



:

	if(exp) block [elseif(exp) block ][else block ]
	for(pre_block; exp; post_block) block
	for(assign_list in exp) block
	break
	continue
	function(var_list){ block }

ObjectScript , . , .



, .

	var i = 1;
	{
		var i = i
		i++
		print i
	}
	print i

2
1

ObjectScript , — debugger ( JavaScript). debugger , . — debuglocals, debuglocals . :

	function(a){
		var c = a * 2;
		{
			var c = a - 1
			print debuglocals
		}
	}(10)

:

{a:10,c:9}

ObjectScript tail call. . . call stack , call stack, .



boolean : null, false NaN false, . — true, 0.



&& || , , :

	print 7 && 9
	print 7 || 9

:

9
7

, , . , clone, . , , . , . __clone, - . . , __clone. , userdata, .



typeof, valueof, numberof, stringof, arrayof, objectof, functionof, userdataof. .



- . ObjectScript , . , — , , , , environment , , , -, JavaScript ( ). .



, .



C++ . :

int test(OS * os, int, int, int, void*)
{
    os->pushNumber(123);
    return 1;
}

int main(int argc, char* argv[])
{
    OS * os = OS::create();

    os->pushCFunction(test);
    os->setGlobal("test");

    os->eval("print(test())"); //  123

    os->release();
    return 0;
}

, ? , github, . OS\examples test3.cmd.



test3.txt , ObjectScript , , , :

[14] print( a[v1] a.v2 )

    begin call
      get env var print
      begin params 2
        begin get property
          get local var a (1 0 param)
          get local var v1 (0 0 param)
        end get property ret values 1
        ,
        begin get property
          get local var a (1 0 param)
          push const string "v2"
        end get property ret values 1
      end params ret values 2
    end call ret values 0 

ObjectScript JSON, .. , , . ObjectScript , JavaScript, Lua PHP, . ObjectScript — - , . new , . ObjectScript , . ObjectScript C++, ++ ( -). ObjectScript — , 459 . .



ObjectScript , :



www.youtube.com/watch?v=OCWIfQYW9rc

www.youtube.com/watch?v=P5KPJOVSs3E

www.youtube.com/watch?v=htDqDNqHX-I

www.youtube.com/watch?v=wqiDeuf7yu8

www.youtube.com/watch?v=uep2SvXdCNU



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