1 | // |
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2 | // ParenthesizedExpression.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 | /// <summary> |
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30 | /// ( Expression ) |
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31 | /// </summary> |
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32 | public class ParenthesizedExpression : Expression |
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33 | { |
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34 | public CSharpTokenNode LParToken { |
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35 | get { return GetChildByRole (Roles.LPar); } |
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36 | } |
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37 | |
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38 | public Expression Expression { |
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39 | get { return GetChildByRole (Roles.Expression); } |
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40 | set { SetChildByRole (Roles.Expression, value); } |
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41 | } |
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42 | |
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43 | public CSharpTokenNode RParToken { |
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44 | get { return GetChildByRole (Roles.RPar); } |
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45 | } |
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46 | |
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47 | public ParenthesizedExpression() |
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48 | { |
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49 | } |
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50 | |
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51 | public ParenthesizedExpression(Expression expr) |
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52 | { |
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53 | Expression = expr; |
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54 | } |
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55 | |
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56 | public override void AcceptVisitor (IAstVisitor visitor) |
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57 | { |
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58 | visitor.VisitParenthesizedExpression (this); |
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59 | } |
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60 | |
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61 | public override T AcceptVisitor<T> (IAstVisitor<T> visitor) |
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62 | { |
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63 | return visitor.VisitParenthesizedExpression (this); |
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64 | } |
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65 | |
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66 | public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data) |
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67 | { |
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68 | return visitor.VisitParenthesizedExpression (this, data); |
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69 | } |
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70 | |
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71 | protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
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72 | { |
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73 | ParenthesizedExpression o = other as ParenthesizedExpression; |
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74 | return o != null && this.Expression.DoMatch(o.Expression, match); |
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75 | } |
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76 | |
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77 | /// <summary> |
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78 | /// Gets whether the expression acts like a parenthesized expression, |
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79 | /// i.e. whether information about the expected type (for lambda type inference) flows |
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80 | /// into the inner expression. |
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81 | /// </summary> |
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82 | /// <returns>Returns true for ParenthesizedExpression, CheckedExpression or UncheckedExpression; false otherwise.</returns> |
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83 | public static bool ActsAsParenthesizedExpression(AstNode expression) |
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84 | { |
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85 | return expression is ParenthesizedExpression || expression is CheckedExpression || expression is UncheckedExpression; |
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86 | } |
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87 | |
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88 | /// <summary> |
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89 | /// Unpacks the given expression if it is a ParenthesizedExpression, CheckedExpression or UncheckedExpression. |
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90 | /// </summary> |
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91 | public static Expression UnpackParenthesizedExpression(Expression expr) |
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92 | { |
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93 | while (ActsAsParenthesizedExpression(expr)) |
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94 | expr = expr.GetChildByRole(Roles.Expression); |
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95 | return expr; |
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96 | } |
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97 | } |
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98 | } |
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