The Rena Language Reference.md

Language reference

Rena is an interpreted scripting language. When it executes the script, it first compiles it into own bytecode and then its interpreter executes this bytecode.

Blocks of code in Rena are defined by its indentation, one can use either space or tab to indent blocks(but don't mix it).

Script consist of a series of statements that tell interpreter what to do. The default statement in Rena is so called Say statement, it consists of any number of identifiers or strings:

"Robert" "Hi, I'm Robert!"  # Robert is who speaks
"Robert entered the room and sat next to you"  # Author speech

If a say statement has more than 1 string/id the first one is the speaker by default, if only one speaker is null which can be interpreted as author speech.

Other statements include variable definitions, labels, menus, do statements and so on.

Expressions

Expression is an operation that returns some value. Expressions can consist of some data, like integers, strings, etc., function calls and operators.

Operators

Operator	Name	Precedence level
.	attribute access	0
**	power	1
+	unary plus	2
-	unary minus	2
not	logical not	2
*	multiply	3
/	divide	3
//	floor divide	3
%	modulo	3
+	plus	4
-	minus	4
<<	bitwise left shift	5
>>	bitwise right shift	5
<	less than	6
>	greater than	6
<=	less-equal	6
>=	greater-equal	6
==	equal	7
!=	not equal	7
&	bitwise and	8
^	xor	9
|	bitwise or	10
and	logical and	11
or	logical or	12
in	in	13
=	assign	14

Keywords

Keyword	Example usage	What it does?
label	label start:, label my_label:	Creates a label tag which can be jumped to
jump	jump start, jump my_label	Continues the story from label tag specified after jump
call	call start, call my_label	Same as jump, but when it reaches return keyword, it returns back to the place from where it jumped and continues the story from there.
return	return	Ends the script or returns to the call point.
do	do my_func(args)	Runs any function passed as funcref to the VM globals inside the script(not needed in expressions)
menu	menu:	creates a menu block with options and their outcomes.