/// <summary>
/// Returns a <see cref="System.String"/> that represents this instance.
/// </summary>
/// <returns>
/// A <see cref="System.String"/> that represents this instance.
/// </returns>
public override string ToString()
{
if (!IsValueCreated)
{
return(EnvironmentEx2.GetResourceString("Lazy_ToString_ValueNotCreated"));
}
return(this.Value.ToString());
}
private static object GetObjectFromMode(LazyThreadSafetyMode mode)
{
if (mode == LazyThreadSafetyMode.ExecutionAndPublication)
{
return(new object());
}
if (mode == LazyThreadSafetyMode.PublicationOnly)
{
return(PUBLICATION_ONLY_OR_ALREADY_INITIALIZED);
}
if (mode != LazyThreadSafetyMode.None)
{
throw new ArgumentOutOfRangeException("mode", EnvironmentEx2.GetResourceString("Lazy_ctor_ModeInvalid"));
}
return(null);
}
private Boxed CreateValue()
{
Boxed boxed = null;
LazyThreadSafetyMode mode = Mode;
if (m_valueFactory != null)
{
try
{
if ((mode != LazyThreadSafetyMode.PublicationOnly) && (m_valueFactory == PUBLICATION_ONLY_OR_ALREADY_INITIALIZED))
{
throw new InvalidOperationException(EnvironmentEx2.GetResourceString("Lazy_Value_RecursiveCallsToValue"));
}
var valueFactory = m_valueFactory;
if (mode != LazyThreadSafetyMode.PublicationOnly)
{
m_valueFactory = PUBLICATION_ONLY_OR_ALREADY_INITIALIZED;
}
return(new Boxed(valueFactory()));
}
catch (Exception exception)
{
if (mode != LazyThreadSafetyMode.PublicationOnly)
{
_boxed = new LazyInternalExceptionHolder(exception.PrepareForRethrow());
}
throw;
}
}
try { boxed = new Boxed((T)Activator.CreateInstance(typeof(T))); }
catch (MissingMethodException)
{
Exception ex = new MissingMemberException(EnvironmentEx2.GetResourceString("Lazy_CreateValue_NoParameterlessCtorForT"));
if (mode != LazyThreadSafetyMode.PublicationOnly)
{
_boxed = new LazyInternalExceptionHolder(ex);
}
throw ex;
}
return(boxed);
}
