running rockstar on input

start.js

@@ -0,0 +1,26 @@
+const trackNum = process.argv[2];
+if (!trackNum) { console.error('Usage: node start <daynumber>'); process.exit(1); }
+
+const satriani = require('./rockstar/satriani/satriani.js');
+const fs = require('fs');
+const lineByLine = require('n-readlines');
+
+const rockstar = new satriani.Interpreter();
+const program = fs.readFileSync(`lyrics/${trackNum}.rock`, {encoding:'utf8', flag:'r'});
+const inputByLine = new lineByLine(`inputs/${trackNum}.txt`, {encoding:'utf8', flag:'r'});
+const getNextInputLineAscii = () => {
+  const next = inputByLine.next();
+  if (next === false) {
+    return null;
+  } else {
+    return next.toString('ascii');
+  }
+}
+
+const ast = rockstar.parse(program);
+// Draw the abstract syntax tree (AST) to the console as a JSON object
+//console.log(JSON.stringify(ast, null, 2))
+
+const output = console.log
+const result = rockstar.run(ast, getNextInputLineAscii, output)
+if (result) console.log(result);