private T SafeJniCall <T>(Func <T> func)
{
_env.GetDelegate <ExceptionClear>()(_currentThreadEnv.Value);
T ret = func();
if (_env.GetDelegate <ExceptionCheck>()(_currentThreadEnv.Value))
{
IntPtr exception = _env.GetDelegate <ExceptionOccurred>()(_currentThreadEnv.Value);
_env.GetDelegate <ExceptionClear>()(_currentThreadEnv.Value);
string exceptionType = GetExceptionType(exception);
JThrowableClass throwableClass = new JThrowableClass(this);
string exceptionMessage = throwableClass.GetMessage(exception);
exceptionMessage = AppendCause(exceptionMessage, exception, throwableClass);
throw new JavaException(exceptionType + (String.IsNullOrEmpty(exceptionMessage) ? "" : ": " + exceptionMessage),
javaStackTrace: throwableClass.GetStackTrace(exception));
}
return(ret);
}
private string AppendCause(string exceptionMessage, IntPtr exception, JThrowableClass throwableClass)
{
IntPtr cause = throwableClass.GetCause(exception);
if (cause == IntPtr.Zero)
{
return(exceptionMessage);
}
else
{
string causeType = GetExceptionType(cause);
string causeMessage = throwableClass.GetMessage(exception);
if (causeMessage != null)
{
exceptionMessage = (exceptionMessage ?? "") + ". Caused by: " + causeType + ": " + causeMessage;
}
return(AppendCause(exceptionMessage, cause, throwableClass));
}
}