ECMAException.java 文件源码

/**
 * Get the line number for a {@code ScriptObject} representing an error
 *
 * @param errObj the error object
 * @return the line number, or undefined if wrapped exception is not a ParserException
 */
public static Object getLineNumber(final ScriptObject errObj) {
    final Object e = getException(errObj);
    if (e instanceof NashornException) {
        return ((NashornException)e).getLineNumber();
    } else if (e instanceof ScriptException) {
        return ((ScriptException)e).getLineNumber();
    }

    return UNDEFINED;
}