mcs/class/Microsoft.Build.Framework/Microsoft.Build.Framework/BuildEventContext.cs

   1 using System;
   2
   3
   4 namespace Microsoft.Build.Framework
   5 {
   6         [Serializable]
   7         public class BuildEventContext
   8         {
   9                 static readonly Random rnd = new Random ();
  10
  11                 public static BuildEventContext Invalid = new BuildEventContext (
  12                         InvalidSubmissionId,
  13                         InvalidNodeId,
  14                         InvalidProjectInstanceId,
  15                         InvalidTargetId,
  16                         InvalidProjectContextId,
  17                         InvalidTaskId);
  18
  19                 internal static BuildEventContext NewInstance ()
  20                 {
  21                         return new BuildEventContext (rnd.Next (), rnd.Next (), rnd.Next (), rnd.Next ());
  22                 }
  23
  24                 public BuildEventContext (int nodeId, int targetId, int projectContextId, int taskId)
  25                         : this (nodeId, rnd.Next (), targetId, projectContextId, taskId)
  26                 {
  27                 }
  28
  29                 public BuildEventContext (int nodeId, int projectInstanceId, int targetId, int projectContextId, int taskId)
  30                         : this (rnd.Next (), nodeId, projectInstanceId, targetId, projectContextId, taskId)
  31                 {
  32                 }
  33
  34                 public BuildEventContext (int submissionId, int nodeId, int projectInstanceId, int targetId, int projectContextId, int taskId)
  35                 {
  36                         SubmissionId = submissionId;
  37                         NodeId = nodeId;
  38                         ProjectInstanceId = projectInstanceId;
  39                         TargetId = targetId;
  40                         ProjectContextId = projectContextId;
  41                         TaskId = taskId;
  42                 }
  43
  44                 public const int InvalidSubmissionId = -1;
  45                 public const int InvalidNodeId = -2;
  46                 public const int InvalidProjectInstanceId = -1;
  47                 public const int InvalidTargetId = -1;
  48                 public const int InvalidProjectContextId = -2;
  49                 public const int InvalidTaskId = -1;
  50
  51                 public int SubmissionId { get; private set; }
  52                 public int NodeId { get; private set; }
  53                 public int ProjectInstanceId { get; private set; }
  54                 public int TargetId { get; private set; }
  55                 public int ProjectContextId { get; private set; }
  56                 public int TaskId { get; private set; }
  57
  58                 // MSDN document says "true if the references are equal, false otherwise." but that doesn't make sense.
  59                 public override bool Equals (object other)
  60                 {
  61                         var o = other as BuildEventContext;
  62                         return (object) o != null &&
  63                                 o.NodeId == NodeId &&
  64                                 o.ProjectContextId == ProjectContextId &&
  65                                 o.ProjectInstanceId == ProjectInstanceId &&
  66                                 o.SubmissionId == SubmissionId &&
  67                                 o.TargetId == TargetId &&
  68                                 o.TaskId == TaskId;
  69                 }
  70
  71                 public override int GetHashCode ()
  72                 {
  73                         return
  74                                 (NodeId << 5) +
  75                                 (ProjectContextId << 4) +
  76                                 (ProjectInstanceId << 3) +
  77                                 (SubmissionId << 2) +
  78                                 (TargetId << 1) +
  79                                 TaskId;
  80                 }
  81
  82                 public static bool operator == (BuildEventContext left, BuildEventContext right)
  83                 {
  84                         return (object) left == null ? (object)right == null : left.Equals (right);
  85                 }
  86
  87                 public static bool operator != (BuildEventContext left, BuildEventContext right)
  88                 {
  89                         return (object) left == null ? (object)right != null : !left.Equals (right);
  90                 }
  91         }
  92 }
  93
  94