mcs/class/Microsoft.Build.Engine/Microsoft.Build.BuildEngine/GroupingCollection.cs

   1 //
   2 // GroupingCollection.cs: Represents group of BuildItemGroup,
   3 // BuildPropertyGroup and BuildChoose.
   4 //
   5 // Author:
   6 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   7 //
   8 // (C) 2005 Marek Sieradzki
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28
  29 using System;
  30 using System.Collections;
  31 using System.Collections.Generic;
  32
  33 namespace Microsoft.Build.BuildEngine {
  34         internal class GroupingCollection : IEnumerable {
  35
  36                 int     imports;
  37                 int     itemGroups;
  38                 Project project;
  39                 int     propertyGroups;
  40                 int     chooses;
  41
  42                 LinkedList <object>     list;
  43                 LinkedListNode <object> add_iterator;
  44
  45                 public GroupingCollection (Project project)
  46                 {
  47                         list = new LinkedList <object> ();
  48                         add_iterator = null;
  49                         this.project = project;
  50                 }
  51
  52                 public IEnumerator GetChooseEnumerator ()
  53                 {
  54                         foreach (object o in list)
  55                                 if (o is BuildChoose)
  56                                         yield return o;
  57                 }
  58
  59                 public IEnumerator GetEnumerator ()
  60                 {
  61                         return list.GetEnumerator ();
  62                 }
  63
  64                 public IEnumerator GetImportEnumerator ()
  65                 {
  66                         foreach (object o in list)
  67                                 if (o is Import)
  68                                         yield return o;
  69                 }
  70
  71                 public IEnumerator GetItemGroupAndChooseEnumerator ()
  72                 {
  73                         foreach (object o in list)
  74                                 if (o is BuildItemGroup || o is BuildPropertyGroup)
  75                                         yield return o;
  76                 }
  77
  78                 public IEnumerator GetItemGroupEnumerator ()
  79                 {
  80                         foreach (object o in list)
  81                                 if (o is BuildItemGroup)
  82                                         yield return o;
  83                 }
  84
  85                 public IEnumerator GetPropertyGroupAndChooseEnumerator ()
  86                 {
  87                         foreach (object o in list)
  88                                 if (o is BuildPropertyGroup || o is BuildChoose)
  89                                         yield return o;
  90                 }
  91
  92                 public IEnumerator GetPropertyGroupEnumerator ()
  93                 {
  94                         foreach (object o in list)
  95                                 if (o is BuildPropertyGroup)
  96                                         yield return o;
  97                 }
  98
  99                 internal void Add (BuildPropertyGroup bpg)
 100                 {
 101                         bpg.GroupingCollection = this;
 102                         propertyGroups++;
 103                         if (add_iterator == null)
 104                                 list.AddLast (bpg);
 105                         else {
 106                                 list.AddAfter (add_iterator, bpg);
 107                                 add_iterator = add_iterator.Next;
 108                         }
 109                 }
 110
 111                 internal void Add (BuildItemGroup big)
 112                 {
 113                         itemGroups++;
 114                         if (add_iterator == null)
 115                                 list.AddLast (big);
 116                         else {
 117                                 list.AddAfter (add_iterator, big);
 118                                 add_iterator = add_iterator.Next;
 119                         }
 120                 }
 121
 122                 internal void Add (BuildChoose bc)
 123                 {
 124                         chooses++;
 125                         if (add_iterator == null)
 126                                 list.AddLast (bc);
 127                         else {
 128                                 list.AddAfter (add_iterator, bc);
 129                                 add_iterator = add_iterator.Next;
 130                         }
 131                 }
 132
 133                 internal void Add (Import import)
 134                 {
 135                         imports++;
 136                         if (add_iterator == null)
 137                                 list.AddLast (import);
 138                         else {
 139                                 list.AddAfter (add_iterator, import);
 140                                 add_iterator = add_iterator.Next;
 141                         }
 142                 }
 143
 144                 internal void Remove (BuildItemGroup big)
 145                 {
 146                         if (big.ParentProject != project)
 147                                 throw new InvalidOperationException (
 148                                         "The \"BuildItemGroup\" object specified does not belong to the correct \"Project\" object.");
 149
 150                         big.Detach ();
 151                         list.Remove (big);
 152                 }
 153
 154                 internal void Remove (BuildPropertyGroup bpg)
 155                 {
 156                         // FIXME: add bpg.Detach ();
 157                         bpg.XmlElement.ParentNode.RemoveChild (bpg.XmlElement);
 158                         list.Remove (bpg);
 159                 }
 160
 161                 internal void Evaluate ()
 162                 {
 163                         Evaluate (EvaluationType.Property);
 164                         Evaluate (EvaluationType.Item);
 165                         Evaluate (EvaluationType.Choose);
 166                 }
 167
 168                 internal void Evaluate (EvaluationType type)
 169                 {
 170                         BuildItemGroup big;
 171                         BuildPropertyGroup bpg;
 172                         LinkedListNode <object> evaluate_iterator;
 173
 174                         if (type == EvaluationType.Property) {
 175                                 evaluate_iterator = list.First;
 176                                 add_iterator = list.First;
 177
 178                                 while (evaluate_iterator != null) {
 179                                         if (evaluate_iterator.Value is BuildPropertyGroup) {
 180                                                 bpg = (BuildPropertyGroup) evaluate_iterator.Value;
 181                                                 project.PushThisFileProperty (bpg.DefinedInFileName);
 182                                                 try {
 183                                                         if (ConditionParser.ParseAndEvaluate (bpg.Condition, project))
 184                                                                 bpg.Evaluate ();
 185                                                 } finally {
 186                                                         project.PopThisFileProperty ();
 187                                                 }
 188                                         }
 189
 190                                         // if it wasn't moved by adding anything because of evaluating a Import shift it
 191                                         if (add_iterator == evaluate_iterator)
 192                                                 add_iterator = add_iterator.Next;
 193
 194                                         evaluate_iterator = evaluate_iterator.Next;
 195                                 }
 196                         } else if (type == EvaluationType.Item) {
 197                                 evaluate_iterator = list.First;
 198                                 add_iterator = list.First;
 199
 200                                 while (evaluate_iterator != null) {
 201                                         if (evaluate_iterator.Value is BuildItemGroup) {
 202                                                 big = (BuildItemGroup) evaluate_iterator.Value;
 203                                                 project.PushThisFileProperty (big.DefinedInFileName);
 204                                                 try {
 205                                                         if (ConditionParser.ParseAndEvaluate (big.Condition, project))
 206                                                                 big.Evaluate ();
 207                                                 } finally {
 208                                                         project.PopThisFileProperty ();
 209                                                 }
 210                                         }
 211
 212                                         evaluate_iterator = evaluate_iterator.Next;
 213                                 }
 214                         } else if (type == EvaluationType.Choose) {
 215                                 evaluate_iterator = list.First;
 216                                 add_iterator = list.First;
 217
 218                                 while (evaluate_iterator != null) {
 219                                         if (evaluate_iterator.Value is BuildChoose) {
 220                                                 BuildChoose bc = (BuildChoose)evaluate_iterator.Value;
 221                                                 project.PushThisFileProperty (bc.DefinedInFileName);
 222                                                 try {
 223                                                         bool whenUsed = false;
 224                                                         foreach (BuildWhen bw in bc.Whens) {
 225                                                                 if (ConditionParser.ParseAndEvaluate (bw.Condition, project)) {
 226                                                                         bw.Evaluate ();
 227                                                                         whenUsed = true;
 228                                                                         break;
 229                                                                 }
 230                                                         }
 231                                                         if (!whenUsed && bc.Otherwise != null &&
 232                                                                 ConditionParser.ParseAndEvaluate (bc.Otherwise.Condition, project)) {
 233                                                                 bc.Otherwise.Evaluate ();
 234                                                         }
 235                                                 } finally {
 236                                                         project.PopThisFileProperty ();
 237                                                 }
 238                                         }
 239
 240                                         evaluate_iterator = evaluate_iterator.Next;
 241                                 }
 242                         }
 243
 244                         add_iterator = null;
 245                 }
 246
 247                 internal int Imports {
 248                         get { return this.imports; }
 249                 }
 250
 251                 internal int ItemGroups {
 252                         get { return this.itemGroups; }
 253                 }
 254
 255                 internal int PropertyGroups {
 256                         get { return this.propertyGroups; }
 257                 }
 258
 259                 internal int Chooses {
 260                         get { return this.chooses; }
 261                 }
 262         }
 263
 264         enum EvaluationType {
 265                 Property,
 266                 Item,
 267                 Choose
 268         }
 269 }