mcs/class/Microsoft.Build/Microsoft.Build.Internal/BuildTaskDatabase.cs

   1 //
   2 // BuildTaskFactory.cs
   3 //
   4 // Author:
   5 //   Atsushi Enomoto (atsushi@xamarin.com)
   6 //
   7 // Copyright (C) 2013 Xamarin Inc. (http://www.xamarin.com)
   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 using System;
  29 using System.Collections.Generic;
  30 using System.Linq;
  31 using Microsoft.Build.Framework;
  32 using System.Reflection;
  33 using Microsoft.Build.Execution;
  34 using Microsoft.Build.Evaluation;
  35 using Microsoft.Build.Construction;
  36 using System.IO;
  37 using System.Xml;
  38
  39 namespace Microsoft.Build.Internal
  40 {
  41         class BuildTaskDatabase
  42         {
  43                 const string default_tasks_file = "Microsoft.Common.tasks";
  44                 static readonly Dictionary<string,BuildTaskDatabase> default_factory = new Dictionary<string, BuildTaskDatabase> ();
  45
  46                 public static BuildTaskDatabase GetDefaultTaskDatabase (Toolset toolset)
  47                 {
  48                         BuildTaskDatabase defaults;
  49                         if (!default_factory.TryGetValue (toolset.ToolsVersion, out defaults)) {
  50                                 defaults = new BuildTaskDatabase (toolset);
  51                         }
  52                         return defaults;
  53                 }
  54
  55                 // for 'default' tasks.
  56                 BuildTaskDatabase (Toolset toolset)
  57                 {
  58                         ProjectRootElement root;
  59                         using (var xml = XmlReader.Create (Path.Combine (toolset.ToolsPath, default_tasks_file)))
  60                                 root = ProjectRootElement.Create (xml);
  61                         LoadUsingTasks (null, root);
  62                 }
  63
  64                 public BuildTaskDatabase (ProjectInstance projectInstance, ProjectRootElement projectRootElement)
  65                 {
  66                         LoadUsingTasks (projectInstance, projectRootElement);
  67                 }
  68
  69                 internal class TaskDescription
  70                 {
  71                         public TaskAssembly TaskAssembly { get; set; }
  72                         public string Name { get; set; }
  73                         public Type TaskFactoryType { get; set; }
  74                         public Type TaskType { get; set; }
  75                         public IDictionary<string, TaskPropertyInfo> TaskFactoryParameters { get; set; }
  76                         public string TaskBody { get; set; }
  77
  78                         public bool IsMatch (string name)
  79                         {
  80                                 int ridx = Name.LastIndexOf ('.');
  81                                 int tidx = name.IndexOf ('.');
  82                                 return string.Equals (Name, name, StringComparison.OrdinalIgnoreCase) ||
  83                                         tidx < 0 && ridx > 0 && string.Equals (Name.Substring (ridx + 1), name, StringComparison.OrdinalIgnoreCase);
  84                         }
  85                 }
  86
  87                 internal class TaskAssembly
  88                 {
  89                         public string AssemblyName { get; set; }
  90                         public string AssemblyFile { get; set; }
  91                         public Assembly LoadedAssembly { get; set; }
  92                 }
  93
  94                 readonly List<TaskAssembly> assemblies = new List<TaskAssembly> ();
  95                 readonly List<TaskDescription> task_descs = new List<TaskDescription> ();
  96
  97                 public List<TaskDescription> Tasks {
  98                         get { return task_descs; }
  99                 }
 100
 101                 void LoadUsingTasks (ProjectInstance projectInstance, ProjectRootElement project)
 102                 {
 103                         Func<string,bool> cond = s => projectInstance != null ? projectInstance.EvaluateCondition (s) : Convert.ToBoolean (s);
 104                         foreach (var ut in project.UsingTasks) {
 105                                 var ta = assemblies.FirstOrDefault (a => a.AssemblyFile.Equals (ut.AssemblyFile, StringComparison.OrdinalIgnoreCase) || a.AssemblyName.Equals (ut.AssemblyName, StringComparison.OrdinalIgnoreCase));
 106                                 if (ta == null) {
 107                                         ta = new TaskAssembly () { AssemblyName = ut.AssemblyName, AssemblyFile = ut.AssemblyFile };
 108                                         ta.LoadedAssembly = ta.AssemblyName != null ? Assembly.Load (ta.AssemblyName) : Assembly.LoadFile (ta.AssemblyFile);
 109                                         assemblies.Add (ta);
 110                                 }
 111                                 var pg = ut.ParameterGroup == null ? null : ut.ParameterGroup.Parameters.Select (p => new TaskPropertyInfo (p.Name, Type.GetType (p.ParameterType), cond (p.Output), cond (p.Required)))
 112                                         .ToDictionary (p => p.Name);
 113                                 var task = new TaskDescription () {
 114                                         TaskAssembly = ta,
 115                                         Name = ut.TaskName,
 116                                         TaskFactoryType = string.IsNullOrEmpty (ut.TaskFactory) ? null : LoadTypeFrom (ta.LoadedAssembly, ut.TaskName, ut.TaskFactory),
 117                                         TaskType = string.IsNullOrEmpty (ut.TaskFactory) ? LoadTypeFrom (ta.LoadedAssembly, ut.TaskName, ut.TaskName) : null,
 118                                         TaskFactoryParameters = pg,
 119                                         TaskBody = ut.TaskBody != null && cond (ut.TaskBody.Condition) ? ut.TaskBody.Evaluate : null,
 120                                         };
 121                                 task_descs.Add (task);
 122                         }
 123                 }
 124
 125                 Type LoadTypeFrom (Assembly a, string taskName, string possiblyShortTypeName)
 126                 {
 127                         Type type = a.GetType (possiblyShortTypeName, false, true);
 128                         if (possiblyShortTypeName.IndexOf ('.') < 0)
 129                                 type = a.GetTypes ().FirstOrDefault (t => t.Name == possiblyShortTypeName);
 130                         if (type == null)
 131                                 throw new InvalidOperationException (string.Format ("For task '{0}' Specified type '{1}' was not found in assembly '{2}'", taskName, possiblyShortTypeName, a.FullName));
 132                         return type;
 133                 }
 134         }
 135 }
 136