4 changed files with 199 additions and 2 deletions
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//
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// RedundantConstructorIssue.cs
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//
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// Author:
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// Ji Kun <jikun.nus@gmail.com>
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//
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// Copyright (c) 2013 Ji Kun
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// 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
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// all copies or 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
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SaHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using ICSharpCode.NRefactory.CSharp.Resolver; |
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using ICSharpCode.NRefactory.Semantics; |
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using ICSharpCode.NRefactory.TypeSystem; |
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namespace ICSharpCode.NRefactory.CSharp.Refactoring |
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{ |
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[IssueDescription("An empty constructor is not necessary", |
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Description = "An alone empty constructor is not necessary.", |
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Category = IssueCategories.Redundancies, |
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Severity = Severity.Suggestion, |
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ResharperDisableKeyword = "RedundantConstructor", |
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IssueMarker = IssueMarker.GrayOut)] |
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public class RedundantConstructorIssue : ICodeIssueProvider |
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{ |
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public IEnumerable<CodeIssue> GetIssues(BaseRefactoringContext context) |
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{ |
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var unit = context.RootNode as SyntaxTree; |
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if (unit == null) |
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return Enumerable.Empty<CodeIssue>(); |
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return new GatherVisitor(context).GetIssues(); |
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} |
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class GatherVisitor : GatherVisitorBase<RedundantConstructorIssue> |
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{ |
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public GatherVisitor(BaseRefactoringContext ctx) |
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: base(ctx) |
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{ |
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} |
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public override void VisitTypeDeclaration(TypeDeclaration typedeclaration) |
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{ |
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var typeResolveResult = ctx.Resolve(typedeclaration) as TypeResolveResult; |
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var constructors = typeResolveResult.GetType().GetConstructors(); |
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bool hasEmptyConstructor = false; |
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bool hasUnemptyConstructor = false; |
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ConstructorDeclaration emptyContructorNode = new ConstructorDeclaration(); |
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foreach (var child in typedeclaration.Children) |
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{ |
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if (child is ConstructorDeclaration) |
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{ |
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if ((child as ConstructorDeclaration).HasModifier(Modifiers.Static)) |
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continue; |
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if ((child as ConstructorDeclaration).Body.Count() > 0 || |
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((child as ConstructorDeclaration).Parameters.Count > 0)) |
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{ |
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hasUnemptyConstructor = true; |
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} |
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else if ((child as ConstructorDeclaration).HasModifier(Modifiers.Public)) |
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{ |
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hasEmptyConstructor = true; |
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emptyContructorNode = child as ConstructorDeclaration; |
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} |
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} |
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} |
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if (!hasUnemptyConstructor && hasEmptyConstructor) |
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{ |
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AddIssue(emptyContructorNode, ctx.TranslateString("Remove redundant constructor"), script => |
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{ |
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script.Remove(emptyContructorNode); |
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} |
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); |
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} |
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return; |
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} |
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} |
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} |
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} |
@ -0,0 +1,96 @@
@@ -0,0 +1,96 @@
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//
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// RedundantConstructorTest.cs
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//
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// Author:
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// Ji Kun <jikun.nus@gmail.com>
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//
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// Copyright (c) 2013 Ji Kun
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
|
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// of this software and associated documentation files (the "Software"), to deal
|
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// in the Software without restriction, including without limitation the rights
|
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
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// copies of the Software, and to permit persons to whom the Software is
|
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// 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
|
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// all copies or 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
|
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System; |
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using NUnit.Framework; |
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using ICSharpCode.NRefactory.CSharp.Refactoring; |
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using ICSharpCode.NRefactory.CSharp.CodeActions; |
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namespace ICSharpCode.NRefactory.CSharp.CodeIssues |
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{ |
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[TestFixture] |
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public class RedundantConstructorTests : InspectionActionTestBase |
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{ |
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[Test] |
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public void TestInspectorCase1() |
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{ |
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var input = @"using System;class Test {private int member; public Test(){}}"; |
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TestRefactoringContext context; |
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var issues = GetIssues(new RedundantConstructorIssue(), input, out context); |
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Assert.AreEqual(1, issues.Count); |
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CheckFix(context, issues, @"using System;class Test {private int member; }"); |
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} |
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[Test] |
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public void TestInspectorCase2() |
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{ |
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var input = @"using System;class Test {private int member;public Test(){} static Test(){}}"; |
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TestRefactoringContext context; |
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var issues = GetIssues(new RedundantConstructorIssue(), input, out context); |
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Assert.AreEqual(1, issues.Count); |
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CheckFix(context, issues, @"using System;class Test {private int member; static Test(){}}"); |
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} |
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[Test] |
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public void TestResharperDisable() |
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{ |
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var input = @"using System;
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//Resharper disable RedundantConstructor
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class Test { |
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public Test(){ |
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} |
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//Resharper restore RedundantConstructor
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}";
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TestRefactoringContext context; |
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var issues = GetIssues(new RedundantConstructorIssue(), input, out context); |
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Assert.AreEqual(0, issues.Count); |
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} |
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[Test] |
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public void TestNegateCase1() |
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{ |
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var input = @"using System;class Test {public Test(){;}}"; |
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TestRefactoringContext context; |
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var issues = GetIssues(new RedundantConstructorIssue(), input, out context); |
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Assert.AreEqual(0, issues.Count); |
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} |
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[Test] |
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public void TestNegateCase2() |
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{ |
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var input = @"using System;class Test {public Test(){;} private Test(){}}"; |
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TestRefactoringContext context; |
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var issues = GetIssues(new RedundantConstructorIssue(), input, out context); |
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Assert.AreEqual(0, issues.Count); |
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} |
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} |
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} |
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