/NRefactory/ICSharpCode.NRefactory.CSharp/Ast/CSharpTokenNode.cs

http://github.com/icsharpcode/ILSpy · C# · 131 lines · 83 code · 17 blank · 31 comment · 7 complexity · 788d74cf6220cdd4b8a59cfc1a072c56 MD5 · raw file

  1. //
  2. // TokenNode.cs
  3. //
  4. // Author:
  5. // Mike Krüger <mkrueger@novell.com>
  6. //
  7. // Copyright (c) 2010 Novell, Inc (http://www.novell.com)
  8. //
  9. // Permission is hereby granted, free of charge, to any person obtaining a copy
  10. // of this software and associated documentation files (the "Software"), to deal
  11. // in the Software without restriction, including without limitation the rights
  12. // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13. // copies of the Software, and to permit persons to whom the Software is
  14. // furnished to do so, subject to the following conditions:
  15. //
  16. // The above copyright notice and this permission notice shall be included in
  17. // all copies or substantial portions of the Software.
  18. //
  19. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20. // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21. // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22. // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23. // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24. // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25. // THE SOFTWARE.
  26. using System;
  27. namespace ICSharpCode.NRefactory.CSharp
  28. {
  29. /// <summary>
  30. /// Represents a token in C#. Note that the type of the token is defined through the TokenRole.
  31. /// </summary>
  32. /// <remarks>
  33. /// In all non null c# token nodes the Role of a CSharpToken must be a TokenRole.
  34. /// </remarks>
  35. public class CSharpTokenNode : AstNode
  36. {
  37. public static new readonly CSharpTokenNode Null = new NullCSharpTokenNode ();
  38. class NullCSharpTokenNode : CSharpTokenNode
  39. {
  40. public override bool IsNull {
  41. get {
  42. return true;
  43. }
  44. }
  45. public NullCSharpTokenNode () : base (TextLocation.Empty, null)
  46. {
  47. }
  48. public override void AcceptVisitor (IAstVisitor visitor)
  49. {
  50. visitor.VisitNullNode(this);
  51. }
  52. public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
  53. {
  54. return visitor.VisitNullNode(this);
  55. }
  56. public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
  57. {
  58. return visitor.VisitNullNode(this, data);
  59. }
  60. protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
  61. {
  62. return other == null || other.IsNull;
  63. }
  64. }
  65. public override NodeType NodeType {
  66. get {
  67. return NodeType.Token;
  68. }
  69. }
  70. TextLocation startLocation;
  71. public override TextLocation StartLocation {
  72. get {
  73. return startLocation;
  74. }
  75. }
  76. int TokenLength {
  77. get {
  78. return TokenRole.TokenLengths [(int)(this.flags >> AstNodeFlagsUsedBits)];
  79. }
  80. }
  81. public override TextLocation EndLocation {
  82. get {
  83. return new TextLocation (StartLocation.Line, StartLocation.Column + TokenLength);
  84. }
  85. }
  86. public CSharpTokenNode (TextLocation location, TokenRole role)
  87. {
  88. this.startLocation = location;
  89. if (role != null)
  90. this.flags |= role.TokenIndex << AstNodeFlagsUsedBits;
  91. }
  92. public override string ToString(CSharpFormattingOptions formattingOptions)
  93. {
  94. return TokenRole.Tokens [(int)(this.flags >> AstNodeFlagsUsedBits)];
  95. }
  96. public override void AcceptVisitor (IAstVisitor visitor)
  97. {
  98. visitor.VisitCSharpTokenNode (this);
  99. }
  100. public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
  101. {
  102. return visitor.VisitCSharpTokenNode (this);
  103. }
  104. public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
  105. {
  106. return visitor.VisitCSharpTokenNode (this, data);
  107. }
  108. protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
  109. {
  110. CSharpTokenNode o = other as CSharpTokenNode;
  111. return o != null && !o.IsNull && !(o is CSharpModifierToken);
  112. }
  113. }
  114. }