module validate(valid, message) {
// It would be great if this was more like a stack trace module print_error(string) { echo(str("<br/><font color='red'>", string, "<br/> in module <b>", parent_module(2), "</b> called from <b>", parent_module(3), "</b><br/>")); } if(!valid) { print_error(str("Error: <b>", message, "</b>")); if(version()[0] >= 2017) { assert(false); } }
}