/// <summary>
/// Allocates a new aggregate exception with the specified message and list of inner exceptions.
/// </summary>
/// <param name="message">The error message that explains the reason for the exception.</param>
/// <param name="innerExceptions">The exceptions that are the cause of the current exception.</param>
/// <exception cref="T:System.ArgumentNullException">The <paramref name="innerExceptions"/> argument
/// is null.</exception>
/// <exception cref="T:System.ArgumentException">An element of <paramref name="innerExceptions"/> is
/// null.</exception>
private AggregateException(string message, IList <Exception> innerExceptions)
: base(message, innerExceptions != null && innerExceptions.Count > 0 ? innerExceptions[0] : null)
{
if (innerExceptions == null)
{
throw new ArgumentNullException("innerExceptions");
}
// Copy exceptions to our internal array and validate them. We must copy them,
// because we're going to put them into a ReadOnlyCollection which simply reuses
// the list passed in to it. We don't want callers subsequently mutating.
Exception[] exceptionsCopy = new Exception[innerExceptions.Count];
for (int i = 0; i < exceptionsCopy.Length; i++)
{
exceptionsCopy[i] = innerExceptions[i];
if (exceptionsCopy[i] == null)
{
throw new ArgumentException(Environment2.GetResourceString("AggregateException_ctor_InnerExceptionNull"));
}
}
m_innerExceptions = new ReadOnlyCollection <Exception>(exceptionsCopy);
}
/// <summary>Creates an instance of T using m_valueFactory in case its not null or use reflection to create a new T()</summary>
/// <returns>An instance of Boxed.</returns>
private Boxed CreateValue()
{
Boxed boxed = null;
LazyThreadSafetyMode mode = Mode;
if (m_valueFactory != null)
{
try
{
// check for recursion
if (mode != LazyThreadSafetyMode.PublicationOnly && m_valueFactory == PUBLICATION_ONLY_OR_ALREADY_INITIALIZED)
{
throw new InvalidOperationException(Environment2.GetResourceString("Lazy_Value_RecursiveCallsToValue"));
}
Func <T> factory = m_valueFactory;
if (mode != LazyThreadSafetyMode.PublicationOnly) // only detect recursion on None and ExecutionAndPublication modes
{
m_valueFactory = PUBLICATION_ONLY_OR_ALREADY_INITIALIZED;
}
boxed = new Boxed(factory());
}
catch (Exception ex)
{
if (mode != LazyThreadSafetyMode.PublicationOnly) // don't cache the exception for PublicationOnly mode
{
#if PFX_LEGACY_3_5
m_boxed = new LazyInternalExceptionHolder(ex);
#else
m_boxed = new LazyInternalExceptionHolder(ex.PrepForRemoting());// copy the call stack by calling the internal method PrepForRemoting
#endif
}
throw;
}
}
else
{
try
{
boxed = new Boxed((T)Activator.CreateInstance(typeof(T)));
}
catch (System.MissingMethodException)
{
Exception ex = new System.MissingMemberException(Environment2.GetResourceString("Lazy_CreateValue_NoParameterlessCtorForT"));
if (mode != LazyThreadSafetyMode.PublicationOnly) // don't cache the exception for PublicationOnly mode
{
m_boxed = new LazyInternalExceptionHolder(ex);
}
throw ex;
}
}
return(boxed);
}
/// <summary>
/// Creates and returns a string representation of the current <see cref="AggregateException"/>.
/// </summary>
/// <returns>A string representation of the current exception.</returns>
public override string ToString()
{
string text = base.ToString();
for (int i = 0; i < m_innerExceptions.Count; i++)
{
text = String.Format(
CultureInfo.InvariantCulture,
Environment2.GetResourceString("AggregateException_ToString"),
text, Environment.NewLine, i, m_innerExceptions[i].ToString(), "<---", Environment.NewLine);
}
return(text);
}
protected AggregateException(SerializationInfo info, StreamingContext context) :
base(info, context)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
Exception[] innerExceptions = info.GetValue("InnerExceptions", typeof(Exception[])) as Exception[];
if (innerExceptions == null)
{
throw new SerializationException(Environment2.GetResourceString("AggregateException_DeserializationFailure"));
}
m_innerExceptions = new ReadOnlyCollection <Exception>(innerExceptions);
}
/// <summary>
/// Static helper function that returns an object based on the given mode. it also throws an exception if the mode is invalid
/// </summary>
private static object GetObjectFromMode(LazyThreadSafetyMode mode)
{
if (mode == LazyThreadSafetyMode.ExecutionAndPublication)
{
return(new object());
}
else if (mode == LazyThreadSafetyMode.PublicationOnly)
{
return(PUBLICATION_ONLY_OR_ALREADY_INITIALIZED);
}
else if (mode != LazyThreadSafetyMode.None)
{
throw new ArgumentOutOfRangeException("mode", Environment2.GetResourceString("Lazy_ctor_ModeInvalid"));
}
return(null); // None mode
}
/// <summary>
/// Initializes a new instance of the <see cref="AggregateException"/> class with
/// references to the inner exceptions that are the cause of this exception.
/// </summary>
/// <param name="innerExceptions">The exceptions that are the cause of the current exception.</param>
/// <exception cref="T:System.ArgumentNullException">The <paramref name="innerExceptions"/> argument
/// is null.</exception>
/// <exception cref="T:System.ArgumentException">An element of <paramref name="innerExceptions"/> is
/// null.</exception>
public AggregateException(params Exception[] innerExceptions) :
this(Environment2.GetResourceString("AggregateException_ctor_DefaultMessage"), innerExceptions)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="AggregateException"/> class with
/// references to the inner exceptions that are the cause of this exception.
/// </summary>
/// <param name="innerExceptions">The exceptions that are the cause of the current exception.</param>
/// <exception cref="T:System.ArgumentNullException">The <paramref name="innerExceptions"/> argument
/// is null.</exception>
/// <exception cref="T:System.ArgumentException">An element of <paramref name="innerExceptions"/> is
/// null.</exception>
public AggregateException(IEnumerable <Exception> innerExceptions) :
this(Environment2.GetResourceString("AggregateException_ctor_DefaultMessage"), innerExceptions)
{
}
private ReadOnlyCollection <Exception> m_innerExceptions; // Complete set of exceptions.
/// <summary>
/// Initializes a new instance of the <see cref="AggregateException"/> class.
/// </summary>
public AggregateException()
: base(Environment2.GetResourceString("AggregateException_ctor_DefaultMessage"))
{
m_innerExceptions = new ReadOnlyCollection <Exception>(new Exception[0]);
}
public OperationCanceledException2()
: base(Environment2.GetResourceString("OperationCanceled"))
{
}
/// <summary>Creates and returns a string representation of this instance.</summary>
/// <returns>The result of calling <see cref="System.Object.ToString"/> on the <see
/// cref="Value"/>.</returns>
/// <exception cref="T:System.NullReferenceException">
/// The <see cref="Value"/> is null.
/// </exception>
public override string ToString()
{
return(IsValueCreated ? Value.ToString() : Environment2.GetResourceString("Lazy_ToString_ValueNotCreated"));
}
