class/corlib/System/AggregateException.cs

   1 #if NET_4_0 || BOOTSTRAP_NET_4_0
   2 // AggregateException.cs
   3 //
   4 // Copyright (c) 2008 Jérémie "Garuma" Laval
   5 //
   6 // Permission is hereby granted, free of charge, to any person obtaining a copy
   7 // of this software and associated documentation files (the "Software"), to deal
   8 // in the Software without restriction, including without limitation the rights
   9 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 // copies of the Software, and to permit persons to whom the Software is
  11 // furnished to do so, subject to the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be included in
  14 // all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 // THE SOFTWARE.
  23 //
  24 //
  25
  26 using System;
  27 using System.Collections.ObjectModel;
  28 using System.Collections.Generic;
  29 using System.Runtime.Serialization;
  30
  31 namespace System
  32 {
  33         [System.SerializableAttribute]
  34         public class AggregateException : Exception
  35         {
  36                 List<Exception> innerExceptions;
  37
  38                 public AggregateException (): base()
  39                 {
  40                 }
  41
  42                 public AggregateException (string message): base (message, null)
  43                 {
  44                 }
  45
  46                 public AggregateException (string message, Exception e): base (message, e)
  47                 {
  48                 }
  49
  50                 protected AggregateException (SerializationInfo info, StreamingContext ctx)
  51                         : base (info, ctx)
  52                 {
  53                 }
  54
  55                 public AggregateException (params Exception[] innerExceptions)
  56                         : this (string.Empty, innerExceptions)
  57                 {
  58                 }
  59
  60                 public AggregateException (string message, params Exception[] innerExceptions)
  61                         : this (message, (IEnumerable<Exception>)innerExceptions)
  62                 {
  63                 }
  64
  65                 public AggregateException (IEnumerable<Exception> innerExceptions)
  66                         : this (string.Empty, innerExceptions)
  67                 {
  68                 }
  69
  70                 public AggregateException (string message, IEnumerable<Exception> inner)
  71                         : base(GetFormattedMessage(message, inner))
  72                 {
  73                         this.innerExceptions = new List<Exception> (inner);
  74                 }
  75
  76                 public AggregateException Flatten ()
  77                 {
  78                         List<Exception> inner = new List<Exception> ();
  79
  80                         foreach (Exception e in innerExceptions) {
  81                                 AggregateException aggEx = e as AggregateException;
  82                                 if (aggEx != null) {
  83                                         inner.AddRange (aggEx.Flatten ().InnerExceptions);
  84                                 } else {
  85                                         inner.Add (e);
  86                                 }
  87                         }
  88
  89                         return new AggregateException (inner);
  90                 }
  91
  92                 public void Handle (Func<Exception, bool> handler)
  93                 {
  94                         List<Exception> failed = new List<Exception> ();
  95                         foreach (var e in innerExceptions) {
  96                                 try {
  97                                         if (!handler (e))
  98                                                 failed.Add (e);
  99                                 } catch {
 100                                         throw new AggregateException (failed);
 101                                 }
 102                         }
 103                         if (failed.Count > 0)
 104                                 throw new AggregateException (failed);
 105                 }
 106
 107                 public ReadOnlyCollection<Exception> InnerExceptions {
 108                         get {
 109                                 return innerExceptions.AsReadOnly ();
 110                         }
 111                 }
 112
 113                 public override string ToString ()
 114                 {
 115                         return this.Message;
 116                 }
 117
 118                 const string baseMessage = "Exception(s) occurred : {0}.";
 119                 static string GetFormattedMessage (string customMessage, IEnumerable<Exception> inner)
 120                 {
 121                         System.Text.StringBuilder finalMessage
 122                                 = new System.Text.StringBuilder (string.Format (baseMessage, customMessage));
 123                         foreach (Exception e in inner) {
 124                                 finalMessage.Append (Environment.NewLine);
 125                                 finalMessage.Append ("[ ");
 126                                 finalMessage.Append (e.ToString ());
 127                                 finalMessage.Append (" ]");
 128                                 finalMessage.Append (Environment.NewLine);
 129                         }
 130                         return finalMessage.ToString ();
 131                 }
 132         }
 133 }
 134 #endif