class/Mono.Cecil/Mono.Cecil.Metadata/MetadataStreamCollection.cs

   1 //
   2 // MetadataStreamCollection.cs
   3 //
   4 // Author:
   5 //   Jb Evain (jbevain@gmail.com)
   6 //
   7 // (C) 2005 Jb Evain
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 namespace Mono.Cecil.Metadata {
  30
  31         using System;
  32         using System.Collections;
  33
  34         public class MetadataStreamCollection : ICollection, IMetadataVisitable {
  35
  36                 IList m_items;
  37
  38                 BlobHeap m_blobHeap;
  39                 GuidHeap m_guidHeap;
  40                 StringsHeap m_stringsHeap;
  41                 UserStringsHeap m_usHeap;
  42                 TablesHeap m_tablesHeap;
  43
  44                 public MetadataStream this [int index] {
  45                         get { return m_items [index] as MetadataStream; }
  46                         set { m_items [index] = value; }
  47                 }
  48
  49                 public int Count {
  50                         get { return m_items.Count; }
  51                 }
  52
  53                 public bool IsSynchronized {
  54                         get { return false; }
  55                 }
  56
  57                 public object SyncRoot {
  58                         get { return this; }
  59                 }
  60
  61                 public BlobHeap BlobHeap {
  62                         get {
  63                                 if (m_blobHeap == null)
  64                                         m_blobHeap = GetHeap (MetadataStream.Blob) as BlobHeap;
  65                                 return m_blobHeap;
  66                         }
  67                 }
  68
  69                 public GuidHeap GuidHeap {
  70                         get {
  71                                 if (m_guidHeap == null)
  72                                         m_guidHeap = GetHeap (MetadataStream.GUID) as GuidHeap;
  73                                 return m_guidHeap;
  74                         }
  75                 }
  76
  77                 public StringsHeap StringsHeap {
  78                         get {
  79                                 if (m_stringsHeap == null)
  80                                         m_stringsHeap = GetHeap (MetadataStream.Strings) as StringsHeap;
  81                                 return m_stringsHeap;
  82                         }
  83                 }
  84
  85                 public TablesHeap TablesHeap {
  86                         get {
  87                                 if (m_tablesHeap == null)
  88                                         m_tablesHeap = GetHeap (MetadataStream.Tables) as TablesHeap;
  89                                 return m_tablesHeap;
  90                         }
  91                 }
  92
  93                 public UserStringsHeap UserStringsHeap {
  94                         get {
  95                                 if (m_usHeap == null)
  96                                         m_usHeap = GetHeap (MetadataStream.UserStrings) as UserStringsHeap;
  97                                 return m_usHeap;
  98                         }
  99                 }
 100
 101                 public MetadataStreamCollection ()
 102                 {
 103                         m_items = new ArrayList (5);
 104                 }
 105
 106                 private MetadataHeap GetHeap (string name)
 107                 {
 108                         for (int i = 0; i < m_items.Count; i++) {
 109                                 MetadataStream stream = m_items [i] as MetadataStream;
 110                                 if (stream.Heap.Name == name)
 111                                         return stream.Heap;
 112                         }
 113
 114                         return null;
 115                 }
 116
 117                 internal void Add (MetadataStream value)
 118                 {
 119                         m_items.Add (value);
 120                 }
 121
 122                 internal void Remove (MetadataStream value)
 123                 {
 124                         m_items.Remove (value);
 125                 }
 126
 127                 public void CopyTo (Array ary, int index)
 128                 {
 129                         m_items.CopyTo (ary, index);
 130                 }
 131
 132                 public IEnumerator GetEnumerator ()
 133                 {
 134                         return m_items.GetEnumerator ();
 135                 }
 136
 137                 public void Accept (IMetadataVisitor visitor)
 138                 {
 139                         visitor.VisitMetadataStreamCollection (this);
 140
 141                         for (int i = 0; i < m_items.Count; i++)
 142                                 this [i].Accept (visitor);
 143                 }
 144         }
 145 }