mirror of https://github.com/icsharpcode/ILSpy.git
Daniel Grunwald
5 years ago
17 changed files with 569 additions and 64 deletions
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System; |
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namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty |
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{ |
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public static class SwitchExpressions |
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{ |
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public enum State |
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{ |
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False, |
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True, |
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Null |
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} |
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public static bool? SwitchOverNullableEnum(State? state) |
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{ |
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return state switch { |
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State.False => false, |
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State.True => true, |
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State.Null => null, |
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_ => throw new InvalidOperationException(), |
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}; |
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} |
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public static string SparseIntegerSwitch(int i) |
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{ |
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Console.WriteLine("SparseIntegerSwitch: " + i); |
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return i switch { |
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-10000000 => "-10 mln", |
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-100 => "-hundred", |
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-1 => "-1", |
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0 => "0", |
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1 => "1", |
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2 => "2", |
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4 => "4", |
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100 => "hundred", |
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10000 => "ten thousand", |
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10001 => "ten thousand and one", |
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int.MaxValue => "int.MaxValue", |
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_ => "something else", |
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}; |
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} |
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public static bool SparseIntegerSwitch3(int i) |
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{ |
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// not using a switch expression because we'd have to duplicate the 'true' branch
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switch (i) { |
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case 0: |
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case 10: |
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case 11: |
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case 12: |
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case 100: |
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case 101: |
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case 200: |
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return true; |
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default: |
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return false; |
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} |
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} |
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public static string SwitchOverNullableInt(int? i) |
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{ |
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return i switch { |
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null => "null", |
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0 => "zero", |
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5 => "five", |
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10 => "ten", |
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_ => "large", |
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}; |
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} |
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public static void SwitchOverInt(int i) |
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{ |
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Console.WriteLine(i switch { |
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0 => "zero", |
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5 => "five", |
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10 => "ten", |
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15 => "fifteen", |
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20 => "twenty", |
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25 => "twenty-five", |
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30 => "thirty", |
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_ => throw new NotImplementedException(), |
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}); |
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} |
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public static string SwitchOverString1(string text) |
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{ |
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Console.WriteLine("SwitchOverString1: " + text); |
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return text switch { |
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"First case" => "Text1", |
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"Second case" => "Text2", |
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"Third case" => "Text3", |
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"Fourth case" => "Text4", |
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"Fifth case" => "Text5", |
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"Sixth case" => "Text6", |
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null => null, |
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_ => "Default", |
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}; |
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} |
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public static string SwitchOverString2(string text) |
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{ |
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Console.WriteLine("SwitchOverString1: " + text); |
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// Cannot use switch expression, because "return Text2;" would need to be duplicated
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switch (text) { |
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case "First case": |
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return "Text1"; |
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case "Second case": |
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case "2nd case": |
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return "Text2"; |
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case "Third case": |
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return "Text3"; |
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case "Fourth case": |
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return "Text4"; |
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case "Fifth case": |
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return "Text5"; |
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case "Sixth case": |
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return "Text6"; |
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case null: |
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return null; |
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default: |
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return "Default"; |
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} |
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} |
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} |
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} |
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@ -0,0 +1,118 @@
@@ -0,0 +1,118 @@
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// Copyright (c) 2020 Daniel Grunwald
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
|
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
|
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
|
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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namespace ICSharpCode.Decompiler.CSharp.Syntax |
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{ |
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/// <summary>
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/// Expression switch { SwitchSections }
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/// </summary>
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public class SwitchExpression : Expression |
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{ |
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public static readonly TokenRole SwitchKeywordRole = new TokenRole("switch"); |
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public static readonly Role<SwitchExpressionSection> SwitchSectionRole = new Role<SwitchExpressionSection>("SwitchSection"); |
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public Expression Expression { |
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get { return GetChildByRole(Roles.Expression); } |
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set { SetChildByRole(Roles.Expression, value); } |
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} |
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public CSharpTokenNode SwitchToken { |
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get { return GetChildByRole(SwitchKeywordRole); } |
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} |
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public CSharpTokenNode LBraceToken { |
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get { return GetChildByRole(Roles.LBrace); } |
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} |
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public AstNodeCollection<SwitchExpressionSection> SwitchSections { |
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get { return GetChildrenByRole(SwitchSectionRole); } |
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} |
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public CSharpTokenNode RBraceToken { |
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get { return GetChildByRole(Roles.RBrace); } |
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} |
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public override void AcceptVisitor(IAstVisitor visitor) |
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{ |
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visitor.VisitSwitchExpression(this); |
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} |
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public override T AcceptVisitor<T>(IAstVisitor<T> visitor) |
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{ |
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return visitor.VisitSwitchExpression(this); |
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} |
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public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data) |
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{ |
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return visitor.VisitSwitchExpression(this, data); |
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} |
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protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
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{ |
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SwitchExpression o = other as SwitchExpression; |
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return o != null && this.Expression.DoMatch(o.Expression, match) && this.SwitchSections.DoMatch(o.SwitchSections, match); |
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} |
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} |
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/// <summary>
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/// Pattern => Expression
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/// </summary>
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public class SwitchExpressionSection : AstNode |
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{ |
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public static readonly Role<Expression> PatternRole = new Role<Expression>("Pattern", Expression.Null); |
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public static readonly Role<Expression> BodyRole = new Role<Expression>("Body", Expression.Null); |
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public Expression Pattern { |
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get { return GetChildByRole(PatternRole); } |
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set { SetChildByRole(PatternRole, value); } |
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} |
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public CSharpTokenNode ArrowToken { |
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get { return GetChildByRole(Roles.Arrow); } |
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} |
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public Expression Body { |
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get { return GetChildByRole(BodyRole); } |
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set { SetChildByRole(BodyRole, value); } |
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} |
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public override NodeType NodeType => NodeType.Unknown; |
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public override void AcceptVisitor(IAstVisitor visitor) |
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{ |
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visitor.VisitSwitchExpressionSection(this); |
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} |
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public override T AcceptVisitor<T>(IAstVisitor<T> visitor) |
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{ |
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return visitor.VisitSwitchExpressionSection(this); |
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} |
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public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data) |
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{ |
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return visitor.VisitSwitchExpressionSection(this, data); |
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} |
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protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
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{ |
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SwitchExpressionSection o = other as SwitchExpressionSection; |
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return o != null && this.Pattern.DoMatch(o.Pattern, match) && this.Body.DoMatch(o.Body, match); |
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} |
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} |
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} |
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