Method log

src/main/java/org/codehaus/groovy/tools/shell/util/Logger.java:47–78

(final String level, Object msg, Throwable cause)

    }

    private void log(final String level, Object msg, Throwable cause) {
        assert level != null;
        assert msg != null;

        if (io == null) {
            synchronized (Logger.class) {
                if (io == null) {
                    io = new IO();
                }
            }
        }

        // Allow the msg to be a Throwable, and handle it properly if no cause is given
        if (cause == null) {
            if (msg instanceof Throwable) {
                cause = (Throwable) msg;
                msg = cause.getMessage();
            }
        }

        if (io.ansiSupported) {
            logWithAnsi(level, msg);
        } else {
            logDefault(level, msg);
        }

        if (cause != null) {
            cause.printStackTrace(io.out);
        }

        io.flush();
    }

    private void logDefault(String level, Object msg) {
        io.out.println(level + " [" + name + "] " + msg);