/// <summary>
/// Validates an object for null with defered excecution of error message
/// formating and default ErrReportException
/// </summary>
/// <param name="code">The error code if null</param>
/// <param name="obj">The object to evaluate</param>
/// <param name="msg">The error message function</param>
public static void ChkVar(object obj, int code, Func <string> msgFunc)
{
if (obj == null)
{
WrapErr.ChkVar(obj, code, WrapErr.SafeAction(msgFunc));
}
}
/// <summary>
/// Validates a condition to be false with defered formating of error message
/// with ErrReportException thrown on failure
/// </summary>
/// <param name="condition">The condition to evaluate</param>
/// <param name="code">The error code if true</param>
/// <param name="msg">The error message function</param>
public static void ChkFalse(bool condition, int code, Func <string> msgFunc)
{
if (condition)
{
// Format method only invoked on failure of condition
WrapErr.ChkFalse(condition, code, WrapErr.SafeAction(msgFunc));
}
}
/// <summary>
/// Log the ErrReport
/// </summary>
/// <param name="err"></param>
private static ErrReport LogErr(ErrReport err)
{
lock (WrapErr.onExceptionLogLock) {
if (WrapErr.onExceptionLog != null)
{
WrapErr.SafeAction(() => WrapErr.onExceptionLog.Invoke(err));
}
}
return(err);
}
/// <summary>
/// Wrapper of try catch finally to consitently produce a FaultException ErrReport no matter what the
/// Exception. Information from previous FaultException ErrReport is just retthrown while
/// ErrReportException are converted to FaultException ErrReport with embedded ErrReport info
/// </summary>
/// <param name="code">The unique error number</param>
/// <param name="errMsgFunc">The error message formating method that is only invoked on exception</param>
/// <param name="action">The action to execute</param>
/// <param name="finallyAction">The finally action to execute</param>
private static T WrapTryToErrorReportException <T>(int code, Func <string> errMsgFunc, Func <T> func, Action finallyAction)
{
try {
return(func.Invoke());
}
catch (ErrReportExceptionFromChk e) {
throw new ErrReportException(WrapErr.GetErrReport(e));
}
catch (ErrReportException) {
throw;
}
catch (Exception e) {
throw new ErrReportException(WrapErr.GetErrReport(code, WrapErr.SafeAction(errMsgFunc), e));
}
finally {
WrapErr.SafeAction(() => finallyAction.Invoke());
}
}
/// <summary>
/// Wrap an action and report the results with an ErrReport object. No exceptions will propegate
/// and a finally will be executed. The error message is an anonymous method to prevent costly
/// string formating when no error.
/// </summary>
/// <param name="report">The ErrReport object to initialise</param>
/// <param name="code">The error code on error</param>
/// <param name="errMsgFunc">The error message on error function</param>
/// <param name="action">The action to invoke</param>
/// <param name="finallyAction">The finally action to invoke</param>
public static ErrReport WrapTryToErrReport(int code, Func <string> errMsgFunc, Action action, Action finallyAction)
{
try {
action.Invoke();
return(new ErrReport());
}
catch (ErrReportExceptionFromChk e) {
return(WrapErr.GetErrReport(e));
}
catch (ErrReportException e) {
return(e.Report);
}
catch (Exception e) {
return(WrapErr.GetErrReport(code, WrapErr.SafeAction(errMsgFunc), e));
}
finally {
WrapErr.SafeAction(() => finallyAction.Invoke());
}
}
/// <summary>
/// Wrap a function and report the results with an ErrReport object. No exceptions will propegate
/// and a finally will be executed. The error message is an anonymous method to prevent costly
/// string formating when no error.
/// </summary>
/// <param name="report">The ErrReport object to initialise</param>
/// <param name="code">The error code on error</param>
/// <param name="errMsgFunc">The error message on error function</param>
/// <param name="func">The function to invoke</param>
/// <param name="finallyAction">The finally action to invoke</param>
public static T WrapTryToErrReport <T>(out ErrReport report, int code, Func <string> errMsgFunc, Func <T> func, Action finallyAction)
{
try {
T ret = func.Invoke();
report = new ErrReport();
return(ret);
}
catch (ErrReportExceptionFromChk e) {
report = WrapErr.GetErrReport(e);
}
catch (ErrReportException e) {
report = e.Report;
}
catch (Exception e) {
report = WrapErr.GetErrReport(code, WrapErr.SafeAction(errMsgFunc), e);
}
finally {
WrapErr.SafeAction(() => finallyAction.Invoke());
}
return(default(T));
}
