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 //   Ankit Jain (jankit@novell.com)
   7 //
   8 // (C) 2005 Marek Sieradzki
   9 // Copyright 2009 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 #if NET_2_0
  31
  32 using System;
  33 using System.Collections;
  34 using Microsoft.Build.Framework;
  35
  36 namespace Microsoft.Build.BuildEngine {
  37         internal class ItemReference : IReference {
  38
  39                 string          itemName;
  40                 Expression      transform;
  41                 Expression      separator;
  42                 int             start;
  43                 int             length;
  44                 string          original_string;
  45
  46                 public ItemReference (string original_string, string itemName, string transform, string separator, int start, int length)
  47                 {
  48                         this.itemName = itemName;
  49                         this.start = start;
  50                         this.length = length;
  51                         this.original_string = original_string;
  52
  53                         // Transform and separator are never expanded for item refs
  54                         if (transform != null) {
  55                                 this.transform = new Expression ();
  56                                 this.transform.Parse (transform, ParseOptions.AllowMetadata | ParseOptions.Split);
  57                         }
  58
  59                         if (separator != null) {
  60                                 this.separator = new Expression ();
  61                                 this.separator.Parse (separator, ParseOptions.Split);
  62                         }
  63                 }
  64
  65                 // when evaluating property, allowItems=false, so,
  66                 // ItemRef will _not_ get created, so this wont get hit
  67                 // when evaluating items, expand: true
  68                 // other cases, expand: true
  69                 public string ConvertToString (Project project, ExpressionOptions options)
  70                 {
  71                         BuildItemGroup group;
  72                         if (project.TryGetEvaluatedItemByNameBatched (itemName, out group))
  73                                 return group.ConvertToString (transform, separator, options);
  74                         else
  75                                 return String.Empty;
  76                 }
  77
  78                 public ITaskItem [] ConvertToITaskItemArray (Project project, ExpressionOptions options)
  79                 {
  80                         BuildItemGroup group;
  81                         if (project.TryGetEvaluatedItemByNameBatched (itemName, out group))
  82                                 return group.ConvertToITaskItemArray (transform, separator, options);
  83                         else
  84                                 return null;
  85                 }
  86
  87                 public string ItemName {
  88                         get { return itemName; }
  89                 }
  90
  91                 public Expression Transform {
  92                         get { return transform; }
  93                 }
  94
  95                 public Expression Separator {
  96                         get { return separator; }
  97                 }
  98
  99                 public string OriginalString {
 100                         get { return original_string; }
 101                 }
 102
 103                 public int Start {
 104                         get { return start; }
 105                 }
 106
 107                 public int End {
 108                         get { return start + length - 1; }
 109                 }
 110
 111                 public override string ToString ()
 112                 {
 113                         return original_string;
 114                 }
 115         }
 116 }
 117
 118 #endif