Add pre/postfix decrement and increment operators.

[Dich0tomy]

Pre/postfix decrement and increment operators

Prefix increment

var a = 1;
++a; // a is now equal to 2

Prefix decrement

var a = 1;
--a; // a is now equal to 0

Postfix increment

var a = 1;
a++; // a is now equal to 2

Postfix decrement

var a = 1;
a++; // a is now equal to 0

For loop

This compiles

func main {
	for(var i = 0; i < 3; ++i) {
		print("{}\n", i);
	}
}

and prints

0
1
2

Known bugs

None yet.

[PoetaKodu]

Fixed bugs:

func main {
	var a = 1;
	print("{}\n", a++);
}

Throws a bad optional access. The source is not known yet.

func main {
	var a = 1;
	(++a)++;
}

Results in a segmentation fault. The source is not known yet.