String filename = _filename;
if (filename == null)
filename = _systemId;
if (filename == null || e instanceof LineCompileException)
return new XslParseException(e);
else if (e instanceof CompileException)
return new XslParseException(filename + ":" + _startLine + ": " +
e.getMessage(), e);
else
return new XslParseException(_filename + ":" + _startLine + ": " +
String.valueOf(e), e);
}