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Update SA1119 for stackalloc expressions #3256

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Dec 1, 2020
Merged

Update SA1119 for stackalloc expressions #3256

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3817d7b
Update SA1119 for stackalloc expressions
nxtn Dec 28, 2018
cbcff6b
Handle SyntaxKind.ImplicitStackAllocArrayCreationExpression
nxtn Jan 1, 2019
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16 changes: 16 additions & 0 deletions ....Analyzers/StyleCop.Analyzers.Test.CSharp8/MaintainabilityRules/SA1119CSharp8UnitTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -152,5 +152,21 @@ public unsafe string TestMethod(int n, byte* a, byte* b)

await VerifyCSharpDiagnosticAsync(LanguageVersion.CSharp8, testCode, DiagnosticResult.EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false);
}

[Fact]
public async Task TestStackAllocExpressionInExpressionAsync()
{
const string testCode = @"public class TestClass
{
public unsafe void TestMethod()
{
var ptr = stackalloc byte[1];
var span = (stackalloc byte[1]);
}
}
";

await VerifyCSharpDiagnosticAsync(LanguageVersion.CSharp8, testCode, DiagnosticResult.EmptyDiagnosticResults).ConfigureAwait(false);
}
}
}
2 changes: 1 addition & 1 deletion StyleCop.Analyzers/StyleCop.Analyzers.Test/Verifiers/StyleCopCodeFixVerifier`2.cs
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Expand Up @@ -45,7 +45,7 @@ internal static Task VerifyCSharpDiagnosticAsync(string source, DiagnosticResult
internal static Task VerifyCSharpDiagnosticAsync(LanguageVersion? languageVersion, string source, DiagnosticResult expected, CancellationToken cancellationToken)
=> StyleCopDiagnosticVerifier<TAnalyzer>.VerifyCSharpDiagnosticAsync(languageVersion, source, expected, cancellationToken);

internal static Task VerifyCSharpDiagnosticAsync(LanguageVersion? languageVersion, string source, DiagnosticResult[] expected, CancellationToken cancellationToken)
internal static Task VerifyCSharpDiagnosticAsync(LanguageVersion? languageVersion, string source, DiagnosticResult[] expected, CancellationToken cancellationToken = default)
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=> StyleCopDiagnosticVerifier<TAnalyzer>.VerifyCSharpDiagnosticAsync(languageVersion, source, settings: null, expected, cancellationToken);

internal static Task VerifyCSharpDiagnosticAsync(LanguageVersion? languageVersion, string source, string settings, DiagnosticResult[] expected, CancellationToken cancellationToken)
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6 changes: 6 additions & 0 deletions ...tyleCop.Analyzers/MaintainabilityRules/SA1119StatementMustNotUseUnnecessaryParenthesis.cs
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Expand Up @@ -137,6 +137,12 @@ private static void HandleParenthesizedExpression(SyntaxNodeAnalysisContext cont
return;
}

if (node.Expression.IsKind(SyntaxKind.StackAllocArrayCreationExpression)
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&& node.Parent.IsKind(SyntaxKind.EqualsValueClause))
{
return;
}

ReportDiagnostic(context, node);
}
else
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