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|
//
// AggregateException.cs
//
// Authors:
// Marek Safar (marek.safar@gmail.com)
//
// Copyright (c) 2008 Jérémie "Garuma" Laval
// Copyright (C) 2013 Xamarin Inc (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
#if NET_4_0
using System;
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.Runtime.Serialization;
namespace System
{
[System.SerializableAttribute]
[System.Diagnostics.DebuggerDisplay ("Count = {InnerExceptions.Count}")]
public class AggregateException : Exception
{
List<Exception> innerExceptions = new List<Exception> ();
const string defaultMessage = "One or more errors occured";
public AggregateException () : base (defaultMessage)
{
}
public AggregateException (string message): base (message)
{
}
public AggregateException (string message, Exception innerException): base (message, innerException)
{
if (innerException == null)
throw new ArgumentNullException ("innerException");
innerExceptions.Add (innerException);
}
protected AggregateException (SerializationInfo info, StreamingContext context)
: base (info, context)
{
}
public AggregateException (params Exception[] innerExceptions)
: this (string.Empty, innerExceptions)
{
}
public AggregateException (string message, params Exception[] innerExceptions)
: base (message, innerExceptions == null || innerExceptions.Length == 0 ? null : innerExceptions[0])
{
if (innerExceptions == null)
throw new ArgumentNullException ("innerExceptions");
foreach (var exception in innerExceptions)
if (exception == null)
throw new ArgumentException ("One of the inner exception is null", "innerExceptions");
this.innerExceptions.AddRange (innerExceptions);
}
public AggregateException (IEnumerable<Exception> innerExceptions)
: this (defaultMessage, innerExceptions)
{
}
public AggregateException (string message, IEnumerable<Exception> innerExceptions)
: this (message, new List<Exception> (innerExceptions).ToArray ())
{
}
public AggregateException Flatten ()
{
List<Exception> inner = new List<Exception> ();
foreach (Exception e in innerExceptions) {
AggregateException aggEx = e as AggregateException;
if (aggEx != null) {
inner.AddRange (aggEx.Flatten ().InnerExceptions);
} else {
inner.Add (e);
}
}
return new AggregateException (inner);
}
public void Handle (Func<Exception, bool> predicate)
{
if (predicate == null)
throw new ArgumentNullException ("predicate");
List<Exception> failed = new List<Exception> ();
foreach (var e in innerExceptions) {
if (!predicate (e))
failed.Add (e);
}
if (failed.Count > 0)
throw new AggregateException (failed);
}
public ReadOnlyCollection<Exception> InnerExceptions {
get {
return innerExceptions.AsReadOnly ();
}
}
internal void AddChildException (AggregateException childEx)
{
if (innerExceptions == null)
innerExceptions = new List<Exception> ();
if (childEx == null)
return;
innerExceptions.Add (childEx);
}
public override string ToString ()
{
System.Text.StringBuilder finalMessage = new System.Text.StringBuilder (base.ToString ());
int currentIndex = -1;
foreach (Exception e in innerExceptions) {
finalMessage.Append (Environment.NewLine);
finalMessage.Append (" --> (Inner exception ");
finalMessage.Append (++currentIndex);
finalMessage.Append (") ");
finalMessage.Append (e.ToString ());
finalMessage.Append (Environment.NewLine);
}
return finalMessage.ToString ();
}
public override void GetObjectData (SerializationInfo info, StreamingContext context)
{
if (info == null) {
throw new ArgumentNullException("info");
}
base.GetObjectData(info, context);
info.AddValue ("InnerExceptions", innerExceptions.ToArray(), typeof (Exception[]));
}
public override Exception GetBaseException ()
{
if (innerExceptions == null || innerExceptions.Count != 1)
return this;
return innerExceptions[0].GetBaseException ();
}
}
}
#endif
|
