serene-simple/src/main/java/serene/simple/Main.java

/*
 * This Java source file was generated by the Gradle 'init' task.
 */
package serene.simple;

import java.io.IOException;
import java.io.ByteArrayInputStream;
import java.io.Console;
import java.io.FileInputStream;


public class Main {
    public static void main(String[] args) throws IOException {
        if (args.length == 0) {
            startRepl();
        }
        runSerene(args[0]);
    }

    private static void startRepl() {
        Environment rootEnv = Environment.getBaseEnvironment();

        Console console = System.console();

        while(true) {
            String inputData = console.readLine("serene-> ");

            if (expr == null) break;

            ByteArrayInputStream inputStream = new ByteArrayInputStream(inputData.getBytes());
            ListNode<Node> nodes = Reader.read(inputStream);
            ...
        }

    }

    private static void runSerene(String filePath) throws IOException {
        Environment rootEnv = Environment.getBaseEnvironment();

        ListNode<Node> nodes = Reader.read(new FileInputStream(filePath));

        for (Node n : nodes) {
            n.eval(rootEnv);
        }
    }
}