index.js

import Lexer from "./lexer.js";
import {Parser} from "./parser.js"
import fs from 'fs';
import { Emitter} from "./emit.js";
import { CodeGenerator } from "./visitor.js";
import {LLVMGenerator} from "./llvm.js";

function main() {
    if (process.argv.length !== 3) {
        console.error('Error: Compiler needs source file as argument.');
        process.exit(1);
    }

    // let source = "+-Anas /*is (the) {best}*/ true 1234 0xFF 0.1234 0b10101010 false //comment  123" ;
    const source = fs.readFileSync(process.argv[2], 'utf8');
    let lexer = new Lexer(source);
    //  let token = lexer.getToken();
    // while (token.tokenKind != TokenType.EOF) {
    //     console.log(`Token: ${token.tokenText}, Type: ${Token.getTokenTypeName(token.tokenKind)}`);
    //     token = lexer.getToken();
    // }
    // console.log(`Token: , Type: EOF, Line: ${token.line}, Col: ${token.column}`);
    // lexer = new Lexer(source);
    const emitter = new Emitter('output.c');
    let parser = new Parser(lexer);
    const ast = parser.program();
    console.log("Parser errors: ", parser.errors);
     if (parser.errors.length > 0) {
        console.error('Parser encountered errors. Compilation aborted.');
        process.exit(1);
    }
    
    if (!ast) {
        console.error('Failed to parse program. AST is null.');
        process.exit(1);
    }
    console.dir(ast, { depth: null }); // Pretty print full AST
    
     try {
        const c_generator = new CodeGenerator();
        c_generator.visit(ast);
        emitter.header = c_generator.header.join('\n');
        emitter.code = c_generator.code.join('\n');
        emitter.writeFile();
        console.log('C code generated to output.c');

        const llvmGen = new LLVMGenerator();
        llvmGen.visit(ast);
        const irCode = llvmGen.generate();
        fs.writeFileSync("output.ll", irCode); 
        console.log("LLVM IR code written to output.ll");
    } catch (error) {
        console.error('Code generation failed:', error.message);
        process.exit(1);
    }

    // while(lexer.peek() != '\0') {
    //     console.log(lexer.currChar);
    //     lexer.nextChar();
    // }
}

main();