Lexa programming language

Lexa [ˈlʲɵxə] - pronounced as l'yoha

• the "Л" is pronounced like the "L" sound in "love" but with a slightly palatalized or softened quality
• the "ё" sounds like the "yo" in "yoga"
• the "х" is a voiceless velar fricative, similar to the "ch" in the german "Bach"
• the "а" is pronounced as the "a" in "sofa," a schwa sound

a custom programming language with a unique syntax, implemented to run inside roblox this language includes a lexer, parser, and an interpreter

installation guide

follow these steps to add Lexa to ur game:

1. create folders

   • create a folder called Лёха in ServerScriptService
   • create a folder called examples in ReplicatedStorage

2. create core modules

   • inside ServerScriptService/Лёха, create these modulescripts:
     • lexer: tokenizes the code
     • parser: converts tokens to an AST
     • interpreter: executes the AST
     • main: main entry point for the language

3. add example programs

   • inside ReplicatedStorage/LexaExamples, add these modulescripts:
     • hello_world.lexa
     • fibonnaci.lexa
     • multiplication_table.lexa

syntax

program structure

every Lexa program begins with the keyword здарова followed by the filename (which has a .lexa extension) and ends with the phrase давай бб

здарова helloworld.lexa
//// code here
давай бб

statements and <eof>

each statement in Lexa ends with the keyword стоять (similar to a semicolon in other languages)

ебаника "zdarova Lexa" стоять
//// lua equivalent: print("zdarova Lexa");

keywords and their meanings

keyword	meaning	example
здарова	program start	здарова myprogram.lexa
давай бб	program end	давай бб
стоять	statement terminator	ебаника "Hello" стоять
ебаника	print statement	ебаника "Hello, World!" стоять
хуйняебаная	function definition	хуйняебаная square(x)
если	if statement	если x > 0 тогда
тогда	then (follows if)	если x > 0 тогда
уёбывай	return statement	уёбывай x * x стоять
похуй	end block	если x > 0 тогда ... похуй стоять
для_каждого	for loop	для_каждого i = 1, 10 ебашьследующее
ебашьследующее	loop iteration	для_каждого i = 1, 10 ебашьследующее
нарик	variable declaration	нарик x = 10 стоять

comments

• single-line comments begin with ////
• multi-line comments start with ////!!! and end with !!!////

//// this is a single-line comment

////!!! this is a
multi-line
comment !!!////

example programs

hello world

здарова helloworld.lexa
ебаника "Hello, World!" стоять
давай бб

fibonacci function

здарова fibonacci.lexa
хуйняебаная фиб(н)
    если н <= 0 тогда уёбывай 0 похуй стоять
    если н == 1 тогда уёбывай 1 похуй стоять
    уёбывай фиб(н-1) + фиб(н-2) стоять
похуй стоять

для_каждого и = 0, 10 ебашьследующее
    ебаника "Fib(" .. и .. ") = " .. фиб(и) стоять
похуй стоять
давай бб

multiplication table

здарова multiplicationtable.lexa
для_каждого и = 1, 5 ебашьследующее
    нарик линия = "" стоять
    для_каждого д = 1, 5 ебашьследующее
        линия = линия .. (и * д) .. "\t" стоять
    похуй стоять
    ебаника линия стоять
похуй стоять
давай бб

using Lexa in ur game

running Lexa code from a script

local LexaMain = require(game.ServerScriptService["Лёха"].main)

local lexaCode = [[
здарова myprogram.lexa
ебаника "Hello from Lexa!" стоять
давай бб
]]

local output = LexaMain.run(lexaCode)
print(output)

using the UI examples

there's an example .rbxl place in this folder download it and check it out urself

technical implementation

the Lexa language implementation consists of:

1. lexer: breaks down source code into tokens, handling keywords, identifiers, strings, numbers, operators, and comments
2. parser: builds an Abstract Syntax Tree (AST) representing the program structure
3. interpreter: executes the AST with a bytecode-based VM, including a stack for values, constants pool, and call frames for functions

notes

• the implementation is designed to work within roblox
• all printing is done through Roblox's print() function and captured for UI display
• the UI allows u to experiment with the language without modifying scripts
• u can extend the language by modifying the modules in ServerScriptService/Лёха