main.js

import fs from 'node:fs/promises';
import path from 'node:path';
import Parser from './parser.js';
import ProgramCodeWriter from './program-code-writer.js';

let fileOrFolder = process.argv[2];

let stat = await fs.stat(fileOrFolder);

let filePaths = [];

let outputFileName = '';

if (stat.isDirectory()) {
    let dir = await fs.opendir(fileOrFolder);

    for await (const dirent of dir) {
        if (dirent.isFile()) {
            filePaths.push(path.join(dirent.parentPath, dirent.name));
        }
    }

    outputFileName = fileOrFolder + '.asm';
} else {
    filePaths.push(fileOrFolder);

    let parsedPath = path.parse(filePaths[0]);

    outputFileName = parsedPath.name + '.asm';
}

let outputFileHandle = await fs.open(outputFileName, 'w');

let programCodeWriter = new ProgramCodeWriter(outputFileHandle);

await programCodeWriter.writeBootstrap();

for (let filePath of filePaths) {
    let fileHandle = await fs.open(filePath, 'r');

    let parser = new Parser(fileHandle);

    await parser.parse();

    let parsedPath = path.parse(filePath);

    programCodeWriter.currentFileName = parsedPath.name;

    for (let command of parser.commands) {
        await programCodeWriter.write(command);
    }    
}

await outputFileHandle.close();