/ILSpy/TreeNodes/Analyzer/AnalyzedEventOverridesTreeNode.cs

http://github.com/icsharpcode/ILSpy · C# · 73 lines · 47 code · 9 blank · 17 comment · 6 complexity · 81b0abf2d4439f571bb2545ccaa7b30a MD5 · raw file

  1. // Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
  2. //
  3. // Permission is hereby granted, free of charge, to any person obtaining a copy of this
  4. // software and associated documentation files (the "Software"), to deal in the Software
  5. // without restriction, including without limitation the rights to use, copy, modify, merge,
  6. // publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
  7. // to whom the Software is furnished to do so, subject to the following conditions:
  8. //
  9. // The above copyright notice and this permission notice shall be included in all copies or
  10. // substantial portions of the Software.
  11. //
  12. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
  13. // INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14. // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
  15. // FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  16. // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  17. // DEALINGS IN THE SOFTWARE.
  18. using System;
  19. using System.Collections.Generic;
  20. using System.Linq;
  21. using System.Threading;
  22. using ICSharpCode.Decompiler.Ast;
  23. using Mono.Cecil;
  24. namespace ICSharpCode.ILSpy.TreeNodes.Analyzer
  25. {
  26. internal sealed class AnalyzedEventOverridesTreeNode : AnalyzerSearchTreeNode
  27. {
  28. private readonly EventDefinition analyzedEvent;
  29. public AnalyzedEventOverridesTreeNode(EventDefinition analyzedEvent)
  30. {
  31. if (analyzedEvent == null)
  32. throw new ArgumentNullException("analyzedEvent");
  33. this.analyzedEvent = analyzedEvent;
  34. }
  35. public override object Text
  36. {
  37. get { return "Overridden By"; }
  38. }
  39. protected override IEnumerable<AnalyzerTreeNode> FetchChildren(CancellationToken ct)
  40. {
  41. var analyzer = new ScopedWhereUsedAnalyzer<AnalyzerTreeNode>(analyzedEvent, FindReferencesInType);
  42. return analyzer.PerformAnalysis(ct).OrderBy(n => n.Text);
  43. }
  44. private IEnumerable<AnalyzerTreeNode> FindReferencesInType(TypeDefinition type)
  45. {
  46. if (!TypesHierarchyHelpers.IsBaseType(analyzedEvent.DeclaringType, type, resolveTypeArguments: false))
  47. yield break;
  48. foreach (EventDefinition eventDef in type.Events) {
  49. if (TypesHierarchyHelpers.IsBaseEvent(analyzedEvent, eventDef)) {
  50. MethodDefinition anyAccessor = eventDef.AddMethod ?? eventDef.RemoveMethod;
  51. bool hidesParent = !anyAccessor.IsVirtual ^ anyAccessor.IsNewSlot;
  52. var node = new AnalyzedEventTreeNode(eventDef, hidesParent ? "(hides) " : "");
  53. node.Language = this.Language;
  54. yield return node;
  55. }
  56. }
  57. }
  58. public static bool CanShow(EventDefinition property)
  59. {
  60. var accessor = property.AddMethod ?? property.RemoveMethod;
  61. return accessor.IsVirtual && !accessor.IsFinal && !accessor.DeclaringType.IsInterface;
  62. }
  63. }
  64. }