recursively readdir for module acquisition. Closes #17

run.js

@@ -19,17 +19,51 @@ const standardLibrary = resolve(fileURLToPath(dirname(import.meta.url)), 'lib');
 
 (async () => {
 	// TODO simplify this line gaddam
-	log('reading', systemLocation, '...');
+	const ignoreDeps = (path) => parse(path).name !== 'node_modules';
+
 	const files = [
-		...readdirSync(systemLocation).map(v => resolve(systemLocation, v)),
-		...readdirSync(standardLibrary).map(v => resolve(standardLibrary, v))
+		...walkdirSync(systemLocation, ignoreDeps),
+		...walkdirSync(standardLibrary, ignoreDeps)
 	];
 	const fullpaths = files
 		.filter(v => lstatSync(v).isFile())
 		.filter(v => parse(v).ext === '.v');
-	for(const path of fullpaths) log(path);
+	log('included modules');
+	log(files);
+	
 	log('parsing modules...');
 	const modules = await Promise.all(fullpaths.map(loc => Module.create(loc, systemLocation)));
 	
 	const sys = new System(modules, systemLocation);
 })()
+
+function walkdirSync(root, filter = () => true) {
+	log('reading', root, '...');
+	const paths = readdirSync(root).map(v => resolve(root, v));
+	const [ files, dirs ] = sift(paths.filter(filter), (v) => lstatSync(v).isFile());
+	log(`files: ${files.length} | dirs: ${dirs.length}`);
+	const rfiles = dirs.map(v => walkdirSync(v, filter)).reduce((a, v) => [...a, ...v], []);
+
+	return [
+		...files,
+		...rfiles
+	];
+}
+
+/**
+ * 
+ * @param {T[]} a
+ * @param {(v: T, i: number, a: T[]) => string} fn
+ * 
+ * @returns {Object<string, T[]>}
+ */
+function sift(a, fn) {
+	let left = [], right = [];
+	for(let i = 0; i < a.length; i ++) {
+		const v = a[i]
+		const lr = !!fn(v, i, a);
+		if(lr) left = [...left, v];
+		else right = [...right, v];
+	}
+	return [left, right];
+}