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Fix S1125 FN: recognize "is" and "is not" keyword with constant pattern #7687

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merged 26 commits into from
Aug 4, 2023
Merged

Fix S1125 FN: recognize "is" and "is not" keyword with constant pattern #7687

merged 26 commits into from
Aug 4, 2023

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cristian-ambrosini-sonarsource
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@cristian-ambrosini-sonarsource cristian-ambrosini-sonarsource commented Jul 26, 2023 •
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Fixes #2619
Fixes #7688

martin-strecker-sonarsource
martin-strecker-sonarsource requested changes Jul 27, 2023
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I think, removing GetLeftNode and GetRightNode from the base class was a mistake. Try to fix this first. Call me if you think you have good reasons or problems doing so to discuss it. I might be wrong with that request.

analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Show resolved Hide resolved
analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Show resolved Hide resolved
analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Show resolved Hide resolved
analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessary.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessary.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessary.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessary.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessary.cs Outdated Show resolved Hide resolved
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martin-strecker-sonarsource requested changes Aug 1, 2023
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I don't like how GetRightNode` returns a negate or a non-negated expression. This feels wrong. I made a suggestion to move the logic to another place which (hopefully) fit's better and resolves some complications 🤞. We can also have a chat about it.

analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Show resolved Hide resolved
analyzers/tests/SonarAnalyzer.UnitTest/TestCases/BooleanLiteralUnnecessary.CSharp9.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessaryCodeFix.cs Outdated Show resolved Hide resolved
analyzers/tests/SonarAnalyzer.UnitTest/TestCases/BooleanLiteralUnnecessary.CSharp9.cs Outdated Show resolved Hide resolved
analyzers/tests/SonarAnalyzer.UnitTest/TestCases/BooleanLiteralUnnecessary.CSharp9.cs Show resolved Hide resolved
analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs Outdated Show resolved Hide resolved
analyzers/src/SonarAnalyzer.Common/Rules/BooleanLiteralUnnecessaryBase.cs
private static bool CheckForNullability(SyntaxNode left, SyntaxNode right, SemanticModel model) =>
right is null // Avoids DeclarationPattern or RecursivePattern
|| model.GetTypeInfo(left).Type.IsNullableBoolean()
|| model.GetTypeInfo(right).Type.IsNullableBoolean();
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I think this misses some cases with implicit conversion to bool. But that is another issue and doesn't need to be fixed. See e.g. sharplab

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Maybe we can add an issue/reproducer later

analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessary.cs Outdated Show resolved Hide resolved
@cristian-ambrosini-sonarsource cristian-ambrosini-sonarsource changed the title Fix S1125 FN: recognize "is" keyword with constant pattern Fix S1125 FN: recognize "is" and "is not" keyword with constant pattern Aug 1, 2023
martin-strecker-sonarsource
martin-strecker-sonarsource requested changes Aug 2, 2023
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I think it should be easier to return the pattern for "GetRightNode".

analyzers/src/SonarAnalyzer.CSharp/Extensions/SyntaxNodeExtensions.cs Show resolved Hide resolved
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analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessary.cs Outdated Show resolved Hide resolved
@cristian-ambrosini-sonarsource cristian-ambrosini-sonarsource mentioned this pull request Aug 3, 2023
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There is one unresolved issue from previous rounds. Otherwise LGTM.

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martin-strecker-sonarsource
martin-strecker-sonarsource approved these changes Aug 3, 2023
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LGTM. "Simplifier" might come in handy here as well but optional if you have time.

analyzers/tests/SonarAnalyzer.UnitTest/TestCases/BooleanLiteralUnnecessary.Fixed.cs Show resolved Hide resolved
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sonarcloud bot commented Aug 3, 2023

Kudos, SonarCloud Quality Gate passed!    Quality Gate passed

Bug A 0 Bugs
Vulnerability A 0 Vulnerabilities
Security Hotspot A 0 Security Hotspots
Code Smell A 0 Code Smells

No Coverage information No Coverage information
No Duplication information No Duplication information

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sonarcloud bot commented Aug 3, 2023

SonarCloud Quality Gate failed.    Quality Gate failed

Bug A 0 Bugs
Vulnerability A 0 Vulnerabilities
Security Hotspot A 0 Security Hotspots
Code Smell A 0 Code Smells

94.8% 94.8% Coverage
0.0% 0.0% Duplication

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@pavel-mikula-sonarsource pavel-mikula-sonarsource merged commit 8f6674f into master Aug 4, 2023
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@pavel-mikula-sonarsource pavel-mikula-sonarsource deleted the cristian/fix-S1125-FN branch August 4, 2023 07:55
This was referenced Oct 11, 2023
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