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

   1 //
   2 // ItemReference.cs: Represents "@(Reference)" in expression.
   3 //
   4 // Author:
   5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   6 //
   7 // (C) 2005 Marek Sieradzki
   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 #if NET_2_0
  29
  30 using System;
  31 using System.Collections;
  32 using Microsoft.Build.Framework;
  33 using Microsoft.Build.Utilities;
  34
  35 namespace Microsoft.Build.BuildEngine {
  36         internal class ItemReference {
  37
  38                 string                  itemName;
  39                 OldExpression           separator;
  40                 OldExpression           transform;
  41                 Project                 parentProject;
  42
  43                 /*
  44                 public ItemReference (Project parentProject, string itemName,
  45                                       LiteralExpression transform,
  46                                       LiteralExpression separator)
  47                 {
  48                         this.parentProject = parentProject;
  49                         this.itemName = itemName;
  50                         this.transform = transform;
  51                         this.separator = separator;
  52                 }
  53                 */
  54
  55                 public ItemReference (Project parentProject)
  56                 {
  57                         if (parentProject == null)
  58                                 throw new ArgumentNullException ("Parent Project needed.");
  59                         this.parentProject = parentProject;
  60                         this.itemName = null;
  61                         this.separator = null;
  62                 }
  63
  64                 public void ParseSource (string source)
  65                 {
  66                         string sourceWithoutParens;
  67                         string separatorString = null;
  68                         ApostropheState aState = ApostropheState.Out;
  69                         ItemParsingState iState = ItemParsingState.Name;
  70                         int c = -1;
  71                         int itemNameEnd;
  72                         int transformEnd = -1;
  73                         int separatorStart = -1;
  74
  75                         if (source == null)
  76                                 throw new ArgumentNullException ("source");
  77
  78                         if (source.Length < 3)
  79                                 throw new ArgumentException ("Invalid item.");
  80
  81                         sourceWithoutParens = source.Substring (2, source.Length - 3);
  82                         itemNameEnd = sourceWithoutParens.Length - 1;
  83                         CharEnumerator it = sourceWithoutParens.GetEnumerator ();
  84
  85                         while (it.MoveNext ()) {
  86                                 c++;
  87                                 if (it.Current == '\'') {
  88                                         if (aState == ApostropheState.In)
  89                                                 aState = ApostropheState.Out;
  90                                         else
  91                                                 aState = ApostropheState.In;
  92                                 }
  93                                 if (it.Current == '-' && iState == ItemParsingState.Name && aState == ApostropheState.Out) {
  94                                         iState = ItemParsingState.Transform1;
  95                                         itemNameEnd = c - 1;
  96                                 } else if (it.Current == '>' && iState == ItemParsingState.Transform1 && aState == ApostropheState.Out) {
  97                                         iState = ItemParsingState.Transform2;
  98                                 } else if (iState == ItemParsingState.Transform2 && aState == ApostropheState.Out && c == sourceWithoutParens.Length - 1) {
  99                                         transformEnd = c;
 100                                 } else if (iState == ItemParsingState.Transform2 && aState == ApostropheState.Out && it.Current == ',') {
 101                                         transformEnd = c - 1;
 102                                         separatorStart = c + 1;
 103                                         break;
 104                                 } else if (iState == ItemParsingState.Name && aState == ApostropheState.Out && it.Current == ',') {
 105                                         separatorStart = c + 1;
 106                                         itemNameEnd = c - 1;
 107                                         break;
 108                                 }
 109                         }
 110                         itemName = sourceWithoutParens.Substring (0, itemNameEnd + 1);
 111                         if (transformEnd != -1) {
 112                                 if (separatorStart != -1) {
 113                                         separatorString = sourceWithoutParens.Substring (separatorStart + 1, sourceWithoutParens.Length
 114                                                 - separatorStart - 2);
 115                                         transform = new OldExpression (parentProject);
 116                                         transform.ParseSource (sourceWithoutParens.Substring (itemNameEnd + 4,
 117                                                 transformEnd - itemNameEnd - 4));
 118                                 } else {
 119                                         transform = new OldExpression (parentProject);
 120                                         transform.ParseSource (sourceWithoutParens.Substring (itemNameEnd + 4,
 121                                                 sourceWithoutParens.Length - itemNameEnd - 5));
 122                                 }
 123                         } else {
 124                                 if (separatorStart != -1) {
 125                                         separatorString = sourceWithoutParens.Substring (separatorStart + 1, sourceWithoutParens.Length
 126                                                 - separatorStart - 2);
 127                                 }
 128                         }
 129
 130                         if (separatorString != null) {
 131                                 separator = new OldExpression (parentProject);
 132                                 separator.ParseSource (separatorString);
 133                         }
 134                 }
 135
 136                 public ITaskItem[] ConvertToITaskItemArray ()
 137                 {
 138                         if (itemName != String.Empty) {
 139                                 BuildItemGroup big;
 140                                 if (parentProject.EvaluatedItemsByName.Contains (itemName)) {
 141                                         big = (BuildItemGroup)parentProject.EvaluatedItemsByName [itemName];
 142                                         return big.ConvertToITaskItemArray (transform);
 143                                 } else
 144                                         return null;
 145                         } else
 146                                 return null;
 147                 }
 148
 149                 public string ConvertToString ()
 150                 {
 151                         if (itemName != String.Empty) {
 152                                 BuildItemGroup big;
 153                                 if (parentProject.EvaluatedItemsByName.Contains (itemName)) {
 154                                         big = (BuildItemGroup)parentProject.EvaluatedItemsByName [itemName];
 155
 156                                         return big.ConvertToString (transform, separator);
 157                                 } else
 158                                         return String.Empty;
 159                         } else
 160                                 return String.Empty;
 161                 }
 162
 163                 public string ItemName {
 164                         get { return itemName; }
 165                 }
 166         }
 167 }
 168
 169 #endif