efl/src/examples/eina/EinaError01.cs

76 lines
1.8 KiB
C#

using static System.Console;
public class ExampleEinaError01
{
private static bool RegisteredErrors = false;
private static Eina.Error MyErrorNegative;
private static Eina.Error MyErrorNull;
private static void testFunc(int n, string s)
{
if (!RegisteredErrors)
{
MyErrorNegative = Eina.Error.Register("Negative number");
MyErrorNull = Eina.Error.Register("NULL pointer");
RegisteredErrors = true;
}
if (n < 0)
{
Eina.Error.Set(MyErrorNegative);
return;
}
if (s == null)
{
Eina.Error.Set(MyErrorNull);
return;
}
}
public static void Main()
{
Eina.Config.Init();
Efl.Eo.Config.Init();
// Handling Eina_Error with exception
try
{
testFunc(-1, "abc");
Eina.Error.RaiseIfOccurred();
}
catch(Efl.EflException e)
{
WriteLine($"Caught error: {e.Message}");
}
// Handling Eina_Error directly
testFunc(42, null);
Eina.Error err = Eina.Error.Get();
if (err != 0)
{
WriteLine($"Error set: {err.Message}");
}
Eina.Error.Clear();
// No error set
try
{
testFunc(42, "abc");
Eina.Error.RaiseIfOccurred();
err = Eina.Error.Get();
WriteLine($"Really no error? {err == Eina.Error.NO_ERROR}.");
}
catch
{
WriteLine("Unspected error!!!");
}
WriteLine("No error message is empty string: \"{0}\"", Eina.Error.NO_ERROR.Message);
WriteLine("No error message is empty string: \"{0}\"", Eina.Error.MsgGet(0));
}
}