1 | // |
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2 | // VariableInitializer.cs |
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3 | // |
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4 | // Author: |
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5 | // Mike Krüger <mkrueger@novell.com> |
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6 | // |
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7 | // Copyright (c) 2009 Novell, Inc (http://www.novell.com) |
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8 | // |
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9 | // Permission is hereby granted, free of charge, to any person obtaining a copy |
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10 | // of this software and associated documentation files (the "Software"), to deal |
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11 | // in the Software without restriction, including without limitation the rights |
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12 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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13 | // copies of the Software, and to permit persons to whom the Software is |
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14 | // furnished to do so, subject to the following conditions: |
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15 | // |
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16 | // The above copyright notice and this permission notice shall be included in |
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17 | // all copies or substantial portions of the Software. |
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18 | // |
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19 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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20 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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21 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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22 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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23 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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24 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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25 | // THE SOFTWARE. |
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26 | |
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27 | namespace ICSharpCode.NRefactory.CSharp |
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28 | { |
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29 | public class VariableInitializer : AstNode |
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30 | { |
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31 | #region Null |
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32 | public new static readonly VariableInitializer Null = new NullVariableInitializer (); |
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33 | |
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34 | sealed class NullVariableInitializer : VariableInitializer |
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35 | { |
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36 | public override bool IsNull { |
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37 | get { |
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38 | return true; |
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39 | } |
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40 | } |
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41 | |
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42 | public override void AcceptVisitor (IAstVisitor visitor) |
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43 | { |
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44 | visitor.VisitNullNode(this); |
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45 | } |
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46 | |
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47 | public override T AcceptVisitor<T> (IAstVisitor<T> visitor) |
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48 | { |
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49 | return visitor.VisitNullNode(this); |
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50 | } |
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51 | |
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52 | public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data) |
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53 | { |
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54 | return visitor.VisitNullNode(this, data); |
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55 | } |
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56 | |
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57 | protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
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58 | { |
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59 | return other == null || other.IsNull; |
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60 | } |
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61 | } |
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62 | #endregion |
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63 | |
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64 | #region PatternPlaceholder |
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65 | public static implicit operator VariableInitializer(PatternMatching.Pattern pattern) |
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66 | { |
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67 | return pattern != null ? new PatternPlaceholder(pattern) : null; |
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68 | } |
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69 | |
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70 | sealed class PatternPlaceholder : VariableInitializer, PatternMatching.INode |
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71 | { |
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72 | readonly PatternMatching.Pattern child; |
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73 | |
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74 | public PatternPlaceholder(PatternMatching.Pattern child) |
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75 | { |
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76 | this.child = child; |
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77 | } |
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78 | |
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79 | public override NodeType NodeType { |
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80 | get { return NodeType.Pattern; } |
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81 | } |
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82 | |
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83 | public override void AcceptVisitor (IAstVisitor visitor) |
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84 | { |
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85 | visitor.VisitPatternPlaceholder (this, child); |
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86 | } |
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87 | |
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88 | public override T AcceptVisitor<T> (IAstVisitor<T> visitor) |
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89 | { |
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90 | return visitor.VisitPatternPlaceholder (this, child); |
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91 | } |
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92 | |
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93 | public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data) |
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94 | { |
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95 | return visitor.VisitPatternPlaceholder(this, child, data); |
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96 | } |
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97 | |
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98 | protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
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99 | { |
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100 | return child.DoMatch(other, match); |
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101 | } |
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102 | |
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103 | bool PatternMatching.INode.DoMatchCollection(Role role, PatternMatching.INode pos, PatternMatching.Match match, PatternMatching.BacktrackingInfo backtrackingInfo) |
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104 | { |
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105 | return child.DoMatchCollection(role, pos, match, backtrackingInfo); |
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106 | } |
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107 | } |
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108 | #endregion |
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109 | |
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110 | public override NodeType NodeType { |
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111 | get { |
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112 | return NodeType.Unknown; |
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113 | } |
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114 | } |
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115 | |
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116 | public VariableInitializer() |
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117 | { |
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118 | } |
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119 | |
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120 | public VariableInitializer(string name, Expression initializer = null) |
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121 | { |
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122 | this.Name = name; |
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123 | this.Initializer = initializer; |
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124 | } |
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125 | |
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126 | public string Name { |
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127 | get { |
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128 | return GetChildByRole (Roles.Identifier).Name; |
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129 | } |
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130 | set { |
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131 | SetChildByRole (Roles.Identifier, Identifier.Create (value)); |
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132 | } |
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133 | } |
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134 | |
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135 | public Identifier NameToken { |
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136 | get { |
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137 | return GetChildByRole (Roles.Identifier); |
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138 | } |
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139 | set { |
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140 | SetChildByRole (Roles.Identifier, value); |
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141 | } |
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142 | } |
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143 | |
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144 | public CSharpTokenNode AssignToken { |
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145 | get { return GetChildByRole (Roles.Assign); } |
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146 | } |
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147 | |
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148 | public Expression Initializer { |
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149 | get { return GetChildByRole (Roles.Expression); } |
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150 | set { SetChildByRole (Roles.Expression, value); } |
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151 | } |
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152 | |
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153 | public override void AcceptVisitor (IAstVisitor visitor) |
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154 | { |
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155 | visitor.VisitVariableInitializer (this); |
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156 | } |
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157 | |
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158 | public override T AcceptVisitor<T> (IAstVisitor<T> visitor) |
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159 | { |
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160 | return visitor.VisitVariableInitializer (this); |
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161 | } |
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162 | |
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163 | public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data) |
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164 | { |
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165 | return visitor.VisitVariableInitializer (this, data); |
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166 | } |
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167 | |
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168 | protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
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169 | { |
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170 | VariableInitializer o = other as VariableInitializer; |
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171 | return o != null && MatchString(this.Name, o.Name) && this.Initializer.DoMatch(o.Initializer, match); |
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172 | } |
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173 | } |
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174 | } |
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