eon/README.md

Deon programming language V0.9.5

My computer programming language made with LEX/YACC written in C. (interpreted)

Downloads

Supported operating systems and downloads:

• Win-32 Download SHA1: 9216C9A0073A66A896346D98FE365E1A3B21C0BC
• Win-64 Download SHA1: AFB2DE7360F34E2C397DD34CE6553A1D37CF1884
• Linux-32 Download
• Linux-64 Download

Hello World.

Hello world in Deon.

def main: 
{ 
    print["hello world"];
};
call main;

Variables

• Variables support "type juggling" where types are assumed at runtime.
• Variables can be assigned to each other even if they are different types.

/* main function */
def main:
{
	my_var = 121231; /* int */
	print[my_var];
	my_var = -123.122;  /* double */
	print[my_var];
	my_var = "cool string"; /* null terminating string */
	print[my_var];
	my_var = 'c'; /* char */
	print[my_var];
	my_var = { print[ "hello world" ]; }; /* lambda function */
	call my_var;
};
call main;

Expressions

• As ov v0.9.5 expressions are only supported for int types, I need to recode the entire expression parsing system to support up to doubles.

def main:
{
	var = 10 + (5 * 2 / (11 % 2));
	/* should print 20 */
	print[var];
};
call main;

Scope

• As of v0.9.5 there is not scope inside of this programming language.

/* changes var from 10 to 100 */
def another_function:
{
	var = 100;
};

def main:
{
	var = 10;
	/* should print 10 */
	print[var];
	call another_function;
	/* should print 100 */
	print[var];
};
call main;

Logic

• while loops are if statements
• As of version 0.9.5, logic conditions must only be variables.

If statements

• As stated above, if statement conditions must be a variable.

def main:
{
	var = 1;
	if[var]: /* condition must be a variable */
	{
		print["var was 1"];
		var = 0;
	};
	if[var]:
	{
		print["this wont print! (or shouldnt)"];
	};
};
call main;

While loop

def main:
{
	var = 1;
	/* loop that runs forever */
	while[var]:
	{
		print["this will run forever"];
		print["it also wont stack overflow, so dont worry"];
	};
};
call main;

Functions

• Functions can be defined as variables (lambda) or defined normally.

def my_function: 
{
    some_function = {
      print["hello world"];
    };
    call some_function;
};
call my_function;

Redefinitions

• As of v0.9.5 everything in this programming language can be redefined. That means everything, including the function that is currently being executed.

def main:
{
    main = {
        print["i just redefined main"];
    };
};
call main;
call main;