mcs/class/Microsoft.Build/Microsoft.Build.Internal/BuildEngine4.cs

   1 //
   2 // BuildEngine4.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;
  30 using System.Collections.Generic;
  31 using Microsoft.Build.BuildEngine;
  32 using Microsoft.Build.Execution;
  33 using Microsoft.Build.Framework;
  34 using Microsoft.Build.Evaluation;
  35 using System.Linq;
  36 using System.IO;
  37 using Microsoft.Build.Exceptions;
  38
  39 namespace Microsoft.Build.Internal
  40 {
  41         class BuildEngine4
  42 #if NET_4_5
  43                 : IBuildEngine4
  44 #else
  45                 : IBuildEngine3
  46 #endif
  47         {
  48                 public BuildEngine4 (BuildSubmission submission)
  49                 {
  50                         this.submission = submission;
  51                         event_source = new EventSource ();
  52                         if (submission.BuildManager.OngoingBuildParameters.Loggers != null)
  53                                 foreach (var l in submission.BuildManager.OngoingBuildParameters.Loggers)
  54                                         l.Initialize (event_source);
  55                 }
  56
  57                 BuildSubmission submission;
  58                 ProjectInstance project;
  59                 ProjectTargetInstance current_target;
  60                 ProjectTaskInstance current_task;
  61                 EventSource event_source;
  62
  63                 public ProjectCollection Projects {
  64                         get { return submission.BuildManager.OngoingBuildParameters.ProjectCollection; }
  65                 }
  66
  67                 // FIXME:
  68                 // While we are not faced to implement those features, there are some modern task execution requirements.
  69                 //
  70                 // This will have to be available for "out of process" nodes (see NodeAffinity).
  71                 // NodeAffinity is set per project file at BuildManager.HostServices.
  72                 // When NodeAffinity is set to OutOfProc, it should probably launch different build host
  73                 // that runs separate build tasks. (.NET has MSBuildTaskHost.exe which I guess is about that.)
  74                 //
  75                 // Also note that the complete implementation has to support LoadInSeparateAppDomainAttribute
  76                 // (which is most likely derived from AppDomainIsolatedBuildTask) that marks a task to run
  77                 // in separate AppDomain.
  78                 //
  79                 public void BuildProject (Func<bool> checkCancel, BuildResult result, ProjectInstance project, IEnumerable<string> targetNames, IDictionary<string,string> globalProperties, IDictionary<string,string> targetOutputs, string toolsVersion)
  80                 {
  81                         var parameters = submission.BuildManager.OngoingBuildParameters;
  82                         var buildTaskFactory = new BuildTaskFactory (BuildTaskDatabase.GetDefaultTaskDatabase (parameters.GetToolset (toolsVersion)), submission.BuildRequest.ProjectInstance.TaskDatabase);
  83                         BuildProject (new InternalBuildArguments () { CheckCancel = checkCancel, Result = result, Project = project, TargetNames = targetNames, GlobalProperties = globalProperties, TargetOutputs = targetOutputs, ToolsVersion = toolsVersion, BuildTaskFactory = buildTaskFactory });
  84                 }
  85
  86                 class InternalBuildArguments
  87                 {
  88                         public Func<bool> CheckCancel;
  89                         public BuildResult Result;
  90                         public ProjectInstance Project;
  91                         public IEnumerable<string> TargetNames;
  92                         public IDictionary<string,string> GlobalProperties;
  93                         public IDictionary<string,string> TargetOutputs;
  94                         public string ToolsVersion;
  95                         public BuildTaskFactory BuildTaskFactory;
  96
  97                         public void AddTargetResult (string targetName, TargetResult targetResult)
  98                         {
  99                                 if (!Result.HasResultsForTarget (targetName))
 100                                         Result.AddResultsForTarget (targetName, targetResult);
 101                         }
 102                 }
 103
 104                 void BuildProject (InternalBuildArguments args)
 105                 {
 106                         var request = submission.BuildRequest;
 107                         var parameters = submission.BuildManager.OngoingBuildParameters;
 108                         this.project = args.Project;
 109
 110                         event_source.FireBuildStarted (this, new BuildStartedEventArgs ("Build Started", null));
 111
 112                         var initialPropertiesFormatted = "Initial Properties:\n" + string.Join (Environment.NewLine, project.Properties.OrderBy (p => p.Name).Select (p => string.Format ("{0} = {1}", p.Name, p.EvaluatedValue)).ToArray ());
 113                         event_source.FireMessageRaised (this, new BuildMessageEventArgs (initialPropertiesFormatted, null, null, MessageImportance.Low));
 114
 115                         // null targets -> success. empty targets -> success(!)
 116                         if (request.TargetNames == null)
 117                                 args.Result.OverallResult = BuildResultCode.Success;
 118                         else {
 119                                 foreach (var targetName in request.TargetNames.Where (t => t != null))
 120                                         args.AddTargetResult (targetName, BuildTargetByName (targetName, args));
 121
 122                                 // FIXME: check .NET behavior, whether cancellation always results in failure.
 123                                 args.Result.OverallResult = args.CheckCancel () ? BuildResultCode.Failure : args.Result.ResultsByTarget.Select (p => p.Value).Any (r => r.ResultCode == TargetResultCode.Failure) ? BuildResultCode.Failure : BuildResultCode.Success;
 124                         }
 125                         event_source.FireBuildFinished (this, new BuildFinishedEventArgs ("Build Finished.", null, args.Result.OverallResult == BuildResultCode.Success));
 126                 }
 127
 128                 TargetResult BuildTargetByName (string targetName, InternalBuildArguments args)
 129                 {
 130                         var targetResult = new TargetResult ();
 131
 132                         var request = submission.BuildRequest;
 133                         var parameters = submission.BuildManager.OngoingBuildParameters;
 134                         ProjectTargetInstance target;
 135
 136                         // FIXME: check skip condition
 137                         if (false)
 138                                 targetResult.Skip ();
 139                         // null key is allowed and regarded as blind success(!) (as long as it could retrieve target)
 140                         else if (!request.ProjectInstance.Targets.TryGetValue (targetName, out target))
 141                                 targetResult.Failure (new InvalidOperationException (string.Format ("target '{0}' was not found in project '{1}'", targetName, project.FullPath)));
 142                         else {
 143                                 current_target = target;
 144                                 try {
 145                                         if (!DoBuildTarget (targetResult, args))
 146                                                 return targetResult;
 147                                 } finally {
 148                                         current_target = null;
 149                                 }
 150                                 Func<string,ITaskItem> creator = s => new TargetOutputTaskItem () { ItemSpec = s };
 151                                 var items = args.Project.GetAllItems (target.Outputs, string.Empty, creator, creator, s => true, (t, s) => {
 152                                 });
 153                                 targetResult.Success (items);
 154                                 event_source.FireTargetFinished (this, new TargetFinishedEventArgs ("Target Finished", null, targetName, project.FullPath, target.FullPath, true));
 155                         }
 156                         return targetResult;
 157                 }
 158
 159                 bool DoBuildTarget (TargetResult targetResult, InternalBuildArguments args)
 160                 {
 161                         var request = submission.BuildRequest;
 162                         var target = current_target;
 163
 164                         // process DependsOnTargets first.
 165                         foreach (var dep in project.ExpandString (target.DependsOnTargets).Split (';').Where (s => !string.IsNullOrEmpty (s)).Select (s => s.Trim ())) {
 166                                 var result = BuildTargetByName (dep, args);
 167                                 args.AddTargetResult (dep, result);
 168                                 if (result.ResultCode == TargetResultCode.Failure) {
 169                                         targetResult.Failure (null);
 170                                         return false;
 171                                 }
 172                         }
 173
 174                         event_source.FireTargetStarted (this, new TargetStartedEventArgs ("Target Started", null, target.Name, project.FullPath, target.FullPath));
 175
 176                         // Here we check cancellation (only after TargetStarted event).
 177                         if (args.CheckCancel ()) {
 178                                 targetResult.Failure (new BuildAbortedException ("Build has canceled"));
 179                                 return false;
 180                         }
 181
 182                         var propsToRestore = new Dictionary<string,string> ();
 183                         var itemsToRemove = new List<ProjectItemInstance> ();
 184                         try {
 185                                 // Evaluate additional target properties
 186                                 foreach (var c in target.Children.OfType<ProjectPropertyGroupTaskInstance> ()) {
 187                                         if (!args.Project.EvaluateCondition (c.Condition))
 188                                                 continue;
 189                                         foreach (var p in c.Properties) {
 190                                                 if (!args.Project.EvaluateCondition (p.Condition))
 191                                                         continue;
 192                                                 var value = args.Project.ExpandString (p.Value);
 193                                                 propsToRestore.Add (p.Name, project.GetPropertyValue (value));
 194                                                 project.SetProperty (p.Name, value);
 195                                         }
 196                                 }
 197
 198                                 // Evaluate additional target items
 199                                 foreach (var c in target.Children.OfType<ProjectItemGroupTaskInstance> ()) {
 200                                         if (!args.Project.EvaluateCondition (c.Condition))
 201                                                 continue;
 202                                         foreach (var item in c.Items) {
 203                                                 Func<string,ProjectItemInstance> creator = i => new ProjectItemInstance (project, item.ItemType, item.Metadata.Select (m => new KeyValuePair<string,string> (m.Name, m.Value)), i);
 204                                                 foreach (var ti in project.GetAllItems (item.Include, item.Exclude, creator, creator, s => s == item.ItemType, (ti, s) => ti.SetMetadata ("RecurseDir", s)))
 205                                                         itemsToRemove.Add (ti);
 206                                         }
 207                                 }
 208
 209                                 foreach (var c in target.Children.OfType<ProjectOnErrorInstance> ()) {
 210                                         if (!args.Project.EvaluateCondition (c.Condition))
 211                                                 continue;
 212                                         throw new NotImplementedException ();
 213                                 }
 214
 215                                 // run tasks
 216                                 foreach (var ti in target.Children.OfType<ProjectTaskInstance> ()) {
 217                                         current_task = ti;
 218                                         if (!args.Project.EvaluateCondition (ti.Condition)) {
 219                                                 event_source.FireMessageRaised (this, new BuildMessageEventArgs (string.Format ("Task '{0}' was skipped because condition '{1}' wasn't met.", ti.Name, ti.Condition), null, null, MessageImportance.Low));
 220                                                 continue;
 221                                         }
 222                                         if (!RunBuildTask (ti, targetResult, args))
 223                                                 return false;
 224                                 }
 225                         } finally {
 226                                 // restore temporary property state to the original state.
 227                                 foreach (var p in propsToRestore) {
 228                                         if (p.Value == string.Empty)
 229                                                 project.RemoveProperty (p.Key);
 230                                         else
 231                                                 project.SetProperty (p.Key, p.Value);
 232                                 }
 233                                 foreach (var item in itemsToRemove)
 234                                         project.RemoveItem (item);
 235                         }
 236                         return true;
 237                 }
 238
 239                 bool RunBuildTask (ProjectTaskInstance ti, TargetResult targetResult, InternalBuildArguments args)
 240                 {
 241                         var request = submission.BuildRequest;
 242                         var target = current_target;
 243
 244                         var host = request.HostServices == null ? null : request.HostServices.GetHostObject (request.ProjectFullPath, target.Name, ti.Name);
 245
 246                         // Create Task instance.
 247                         var factoryIdentityParameters = new Dictionary<string,string> ();
 248                         #if NET_4_5
 249                         factoryIdentityParameters ["MSBuildRuntime"] = ti.MSBuildRuntime;
 250                         factoryIdentityParameters ["MSBuildArchitecture"] = ti.MSBuildArchitecture;
 251                         #endif
 252                         var task = args.BuildTaskFactory.CreateTask (ti.Name, factoryIdentityParameters, this);
 253                         event_source.FireMessageRaised (this, new BuildMessageEventArgs (string.Format ("Using task {0} from {1}", ti.Name, task.GetType ().AssemblyQualifiedName), null, null, MessageImportance.Low));
 254                         task.HostObject = host;
 255                         task.BuildEngine = this;
 256
 257                         // Prepare task parameters.
 258                         var props = task.GetType ().GetProperties ()
 259                                 .Where (p => p.CanWrite && p.GetCustomAttributes (typeof (RequiredAttribute), true).Any ());
 260                         var missings = props.Where (p => !ti.Parameters.Any (tp => tp.Key.Equals (p.Name, StringComparison.OrdinalIgnoreCase)));
 261                         if (missings.Any ())
 262                                 throw new InvalidOperationException (string.Format ("Task {0} of type {1} is used without specifying mandatory property: {2}",
 263                                         ti.Name, task.GetType (), string.Join (", ", missings.Select (p => p.Name).ToArray ())));
 264
 265                         foreach (var p in ti.Parameters) {
 266                                 var prop = task.GetType ().GetProperty (p.Key);
 267                                 var value = project.ExpandString (p.Value);
 268                                 if (prop == null)
 269                                         throw new InvalidOperationException (string.Format ("Task {0} does not have property {1}", ti.Name, p.Key));
 270                                 if (!prop.CanWrite)
 271                                         throw new InvalidOperationException (string.Format ("Task {0} has property {1} but it is read-only.", ti.Name, p.Key));
 272                                 var valueInstance = ConvertTo (value, prop.PropertyType);
 273                                 prop.SetValue (task, valueInstance, null);
 274                         }
 275
 276                         // Do execute task.
 277                         event_source.FireTaskStarted (this, new TaskStartedEventArgs ("Task Started", null, project.FullPath, ti.FullPath, ti.Name));
 278                         var taskSuccess = task.Execute ();
 279
 280                         if (!taskSuccess) {
 281                                 event_source.FireTaskFinished (this, new TaskFinishedEventArgs ("Task Finished", null, project.FullPath, ti.FullPath, ti.Name, false));
 282                                 targetResult.Failure (null);
 283                                 if (!ContinueOnError) {
 284                                         event_source.FireTargetFinished (this, new TargetFinishedEventArgs ("Target Failed", null, target.Name, project.FullPath, target.FullPath, false));
 285                                         return false;
 286                                 }
 287                         } else {
 288                                 // Evaluate task output properties and items.
 289                                 event_source.FireTaskFinished (this, new TaskFinishedEventArgs ("Task Finished", null, project.FullPath, ti.FullPath, ti.Name, true));
 290                                 foreach (var to in ti.Outputs) {
 291                                         var toItem = to as ProjectTaskOutputItemInstance;
 292                                         var toProp = to as ProjectTaskOutputPropertyInstance;
 293                                         string taskParameter = toItem != null ? toItem.TaskParameter : toProp.TaskParameter;
 294                                         var pi = task.GetType ().GetProperty (taskParameter);
 295                                         if (pi == null)
 296                                                 throw new InvalidOperationException (string.Format ("Task {0} does not have property {1} specified as TaskParameter", ti.Name, toItem.TaskParameter));
 297                                         if (!pi.CanRead)
 298                                                 throw new InvalidOperationException (string.Format ("Task {0} has property {1} specified as TaskParameter, but it is write-only", ti.Name, toItem.TaskParameter));
 299                                         if (toItem != null)
 300                                                 args.Project.AddItem (toItem.ItemType, ConvertFrom (pi.GetValue (task, null)));
 301                                         else
 302                                                 args.Project.SetProperty (toProp.PropertyName, ConvertFrom (pi.GetValue (task, null)));
 303                                 }
 304                         }
 305
 306                         return true;
 307                 }
 308
 309                 object ConvertTo (string source, Type targetType)
 310                 {
 311                         if (targetType == typeof (ITaskItem) || targetType.IsSubclassOf (typeof (ITaskItem)))
 312                                 return new TargetOutputTaskItem () { ItemSpec = WindowsCompatibilityExtensions.NormalizeFilePath (source) };
 313                         if (targetType.IsArray)
 314                                 return new ArrayList (source.Split (';').Where (s => !string.IsNullOrEmpty (s)).Select (s => ConvertTo (s, targetType.GetElementType ())).ToArray ())
 315                                                 .ToArray (targetType.GetElementType ());
 316                         else
 317                                 return Convert.ChangeType (source, targetType);
 318                 }
 319
 320                 string ConvertFrom (object source)
 321                 {
 322                         if (source == null)
 323                                 return string.Empty;
 324                         if (source is ITaskItem)
 325                                 return ((ITaskItem) source).ItemSpec;
 326                         if (source.GetType ().IsArray)
 327                                 return string.Join (":", ((Array) source).Cast<object> ().Select (o => ConvertFrom (o)).ToArray ());
 328                         else
 329                                 return (string) Convert.ChangeType (source, typeof (string));
 330                 }
 331
 332                 class TargetOutputTaskItem : ITaskItem2
 333                 {
 334                         Hashtable metadata = new Hashtable ();
 335
 336                         #region ITaskItem2 implementation
 337                         public string GetMetadataValueEscaped (string metadataName)
 338                         {
 339                                 return ProjectCollection.Escape ((string) metadata [metadataName]);
 340                         }
 341                         public void SetMetadataValueLiteral (string metadataName, string metadataValue)
 342                         {
 343                                 metadata [metadataName] = ProjectCollection.Unescape (metadataValue);
 344                         }
 345                         public IDictionary CloneCustomMetadataEscaped ()
 346                         {
 347                                 var ret = new Hashtable ();
 348                                 foreach (DictionaryEntry e in metadata)
 349                                         ret [e.Key] = ProjectCollection.Escape ((string) e.Value);
 350                                 return ret;
 351                         }
 352                         public string EvaluatedIncludeEscaped {
 353                                 get { return ProjectCollection.Escape (ItemSpec); }
 354                                 set { ItemSpec = ProjectCollection.Unescape (value); }
 355                         }
 356                         #endregion
 357                         #region ITaskItem implementation
 358                         public IDictionary CloneCustomMetadata ()
 359                         {
 360                                 return new Hashtable (metadata);
 361                         }
 362                         public void CopyMetadataTo (ITaskItem destinationItem)
 363                         {
 364                                 foreach (DictionaryEntry e in metadata)
 365                                         destinationItem.SetMetadata ((string) e.Key, (string) e.Value);
 366                         }
 367                         public string GetMetadata (string metadataName)
 368                         {
 369                                 var wk = ProjectCollection.GetWellKnownMetadata (metadataName, ItemSpec, Path.GetFullPath, null);
 370                                 if (wk != null)
 371                                         return wk;
 372                                 return (string) metadata [metadataName];
 373                         }
 374                         public void RemoveMetadata (string metadataName)
 375                         {
 376                                 metadata.Remove (metadataName);
 377                         }
 378                         public void SetMetadata (string metadataName, string metadataValue)
 379                         {
 380                                 metadata [metadataName] = metadataValue;
 381                         }
 382                         public string ItemSpec { get; set; }
 383                         public int MetadataCount {
 384                                 get { return metadata.Count; }
 385                         }
 386                         public ICollection MetadataNames {
 387                                 get { return metadata.Keys; }
 388                         }
 389                         #endregion
 390                 }
 391
 392 #if NET_4_5
 393                 #region IBuildEngine4 implementation
 394
 395                 // task objects are not in use anyways though...
 396
 397                 class TaskObjectRegistration
 398                 {
 399                         public TaskObjectRegistration (object key, object obj, RegisteredTaskObjectLifetime lifetime, bool allowEarlyCollection)
 400                         {
 401                                 Key = key;
 402                                 Object = obj;
 403                                 Lifetime = lifetime;
 404                                 AllowEarlyCollection = allowEarlyCollection;
 405                         }
 406                         public object Key { get; private set; }
 407                         public object Object { get; private set; }
 408                         public RegisteredTaskObjectLifetime Lifetime { get; private set; }
 409                         public bool AllowEarlyCollection { get; private set; }
 410                 }
 411
 412                 List<TaskObjectRegistration> task_objects = new List<TaskObjectRegistration> ();
 413
 414                 public object GetRegisteredTaskObject (object key, RegisteredTaskObjectLifetime lifetime)
 415                 {
 416                         var reg = task_objects.FirstOrDefault (t => t.Key == key && t.Lifetime == lifetime);
 417                         return reg != null ? reg.Object : null;
 418                 }
 419
 420                 public void RegisterTaskObject (object key, object obj, RegisteredTaskObjectLifetime lifetime, bool allowEarlyCollection)
 421                 {
 422                         task_objects.Add (new TaskObjectRegistration (key, obj, lifetime, allowEarlyCollection));
 423                 }
 424
 425                 public object UnregisterTaskObject (object key, RegisteredTaskObjectLifetime lifetime)
 426                 {
 427                         var reg = task_objects.FirstOrDefault (t => t.Key == key && t.Lifetime == lifetime);
 428                         if (reg != null)
 429                                 task_objects.Remove (reg);
 430                         return reg.Object;
 431                 }
 432                 #endregion
 433 #endif
 434
 435                 #region IBuildEngine3 implementation
 436
 437                 public BuildEngineResult BuildProjectFilesInParallel (string[] projectFileNames, string[] targetNames, IDictionary[] globalProperties, IList<string>[] removeGlobalProperties, string[] toolsVersion, bool returnTargetOutputs)
 438                 {
 439                         throw new NotImplementedException ();
 440                 }
 441
 442                 public void Reacquire ()
 443                 {
 444                         throw new NotImplementedException ();
 445                 }
 446
 447                 public void Yield ()
 448                 {
 449                         throw new NotImplementedException ();
 450                 }
 451
 452                 #endregion
 453
 454                 #region IBuildEngine2 implementation
 455
 456                 public bool BuildProjectFile (string projectFileName, string[] targetNames, IDictionary globalProperties, IDictionary targetOutputs, string toolsVersion)
 457                 {
 458                         var proj = GetProjectInstance (projectFileName, toolsVersion);
 459                         var globalPropertiesThatMakeSense = new Dictionary<string,string> ();
 460                         foreach (DictionaryEntry p in globalProperties)
 461                                 globalPropertiesThatMakeSense [(string) p.Key] = (string) p.Value;
 462                         var result = new BuildResult ();
 463                         var outputs = new Dictionary<string, string> ();
 464                         BuildProject (() => false, result, proj, targetNames, globalPropertiesThatMakeSense, outputs, toolsVersion);
 465                         foreach (var p in outputs)
 466                                 targetOutputs [p.Key] = p.Value;
 467                         return result.OverallResult == BuildResultCode.Success;
 468                 }
 469
 470                 public bool BuildProjectFilesInParallel (string[] projectFileNames, string[] targetNames, IDictionary[] globalProperties, IDictionary[] targetOutputsPerProject, string[] toolsVersion, bool useResultsCache, bool unloadProjectsOnCompletion)
 471                 {
 472                         throw new NotImplementedException ();
 473                 }
 474
 475                 public bool IsRunningMultipleNodes {
 476                         get {
 477                                 throw new NotImplementedException ();
 478                         }
 479                 }
 480
 481                 ProjectInstance GetProjectInstance (string projectFileName, string toolsVersion)
 482                 {
 483                         string fullPath = Path.GetFullPath (projectFileName);
 484                         if (submission.BuildRequest.ProjectFullPath == fullPath)
 485                                 return submission.BuildRequest.ProjectInstance;
 486                         // FIXME: could also be filtered by global properties
 487                         // http://msdn.microsoft.com/en-us/library/microsoft.build.evaluation.projectcollection.getloadedprojects.aspx
 488                         var project = Projects.GetLoadedProjects (projectFileName).FirstOrDefault (p => p.ToolsVersion == toolsVersion);
 489                         if (project == null)
 490                                 throw new InvalidOperationException (string.Format ("Project '{0}' is not loaded", projectFileName));
 491                         return submission.BuildManager.GetProjectInstanceForBuild (project);
 492                 }
 493
 494                 #endregion
 495
 496                 #region IBuildEngine implementation
 497
 498                 public bool BuildProjectFile (string projectFileName, string[] targetNames, IDictionary globalProperties, IDictionary targetOutputs)
 499                 {
 500                         return BuildProjectFile (projectFileName, targetNames, globalProperties, targetOutputs, Projects.DefaultToolsVersion);
 501                 }
 502
 503                 public void LogCustomEvent (CustomBuildEventArgs e)
 504                 {
 505                         event_source.FireCustomEventRaised (this, e);
 506                 }
 507
 508                 public void LogErrorEvent (BuildErrorEventArgs e)
 509                 {
 510                         event_source.FireErrorRaised (this, e);
 511                 }
 512
 513                 public void LogMessageEvent (BuildMessageEventArgs e)
 514                 {
 515                         event_source.FireMessageRaised (this, e);
 516                 }
 517
 518                 public void LogWarningEvent (BuildWarningEventArgs e)
 519                 {
 520                         event_source.FireWarningRaised (this, e);
 521                 }
 522
 523                 public int ColumnNumberOfTaskNode {
 524                         get { return current_task.Location != null ? current_task.Location.Column : 0; }
 525                 }
 526
 527                 public bool ContinueOnError {
 528                         get { return current_task != null && project.EvaluateCondition (current_task.Condition) && EvaluateContinueOnError (current_task.ContinueOnError); }
 529                 }
 530
 531                 bool EvaluateContinueOnError (string value)
 532                 {
 533                         switch (value) {
 534                         case "WarnAndContinue":
 535                         case "ErrorAndContinue":
 536                                 return true;
 537                         case "ErrorAndStop":
 538                                 return false;
 539                         }
 540                         // empty means "stop on error", so don't pass empty string to EvaluateCondition().
 541                         return !string.IsNullOrEmpty (value) && project.EvaluateCondition (value);
 542                 }
 543
 544                 public int LineNumberOfTaskNode {
 545                         get { return current_task.Location != null ? current_task.Location.Line : 0; }
 546                 }
 547
 548                 public string ProjectFileOfTaskNode {
 549                         get { return current_task.FullPath; }
 550                 }
 551
 552                 #endregion
 553         }
 554 }
 555