babu-language/src/index.js

A fun programming language built on JavaScript. Created by Atikin Verse.

const fs = require('fs');

// Function to transpile Babu code into JavaScript
function transpile(code) {
  return code
    // ✅ Print Statements
    .replace(/^ *bol babu "(.*?)" *$/gm, 'console.log("$1")')    // Static string
    .replace(/^ *bol babu (.+?) *$/gm, 'console.log($1)')        // Dynamic expression

    // ✅ Variable Declarations
    .replace(/let babu (\w+) = (.+)/g, 'let $1 = $2')
    .replace(/const babu (\w+) = (.+)/g, 'const $1 = $2')
    .replace(/var babu (\w+) = (.+)/g, 'var $1 = $2')

    // ✅ Arrays
    .replace(/let babu (\w+) = \[(.*?)\]/g, 'let $1 = [$2]')

    // ✅ Objects
    .replace(/let babu (\w+) = \{(.*?)\}/g, 'let $1 = {$2}')

    // ✅ Conditionals
    .replace(/agar babu \((.*?)\)/g, 'if ($1) {')
    .replace(/nahi to babu/g, '} else {')

    // ✅ Loops
    .replace(/jab tak babu \((.*?)\)/g, 'while ($1) {')

    // ✅ Functions
    .replace(/kaam babu (\w+)\((.*?)\)/g, 'function $1($2) {')   // Function declaration
    .replace(/kaam khatam babu/g, '}')                           // End of block
    .replace(/bula babu (\w+)\((.*?)\)/g, '$1($2)')              // Function call with args

    // ✅ Return
    .replace(/wapis jao babu (.+)/g, 'return $1')

    // ✅ Booleans
    .replace(/\bsahi babu\b/g, 'true')
    .replace(/\bgalat babu\b/g, 'false')

    // ✅ File operations
    .replace(/padho file "(.*?)"/g, 'fs.readFileSync("$1", "utf-8")')
    .replace(/likho file "(.*?)", (.+)/g, 'fs.writeFileSync("$1", $2)')

    // ✅ Error handling
    .replace(/galti ho sakti hai babu/g, 'try {')
    .replace(/pakdo babu \((\w+)\)/g, '} catch ($1) {')
    .replace(/koi ghalti babu "(.*?)"/g, 'throw new Error("$1")')

    // ✅ Event Handling (basic)
    .replace(/event babu (\w+)\s*=\s*(.+)/g, '$1 = function() { $2 }')
    .replace(/bula babu (\w+)\(event\)/g, '$1(event)');
}

// Function to read file, transpile it and execute the result
function run(filePath) {
  const code = fs.readFileSync(filePath, 'utf-8');
  const jsCode = transpile(code);

  try {
    eval(jsCode);
  } catch (err) {
    console.error('Error executing the transpiled code:', err);
  }
}

module.exports = { run };