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Update UseExceptionThrowHelpers to only recommend ANE for classes #6314

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merged 2 commits into from
Dec 9, 2022
Merged

Update UseExceptionThrowHelpers to only recommend ANE for classes #6314

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0e1ba77
Update UseExceptionThrowHelpers to only recommend ANE for classes
stephentoub Dec 9, 2022
85a4a54
Address PR feedback
stephentoub Dec 9, 2022
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3 changes: 2 additions & 1 deletion src/NetAnalyzers/Core/Microsoft.NetCore.Analyzers/Runtime/UseExceptionThrowHelpers.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -180,7 +180,8 @@ aooreThrowIfGreaterThan is not null || aooreThrowIfGreaterThanOrEqual is not nul
if (SymbolEqualityComparer.Default.Equals(objectCreationOperation.Type, ane))
{
if (aneThrowIfNull is not null &&
IsParameterNullCheck(condition.Condition, out IParameterReferenceOperation? nullCheckParameter))
IsParameterNullCheck(condition.Condition, out IParameterReferenceOperation? nullCheckParameter) &&
nullCheckParameter.Type.IsReferenceType)
{
context.ReportDiagnostic(condition.CreateDiagnostic(
UseArgumentNullExceptionThrowIfNullRule,
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66 changes: 66 additions & 0 deletions ...tAnalyzers/UnitTests/Microsoft.NetCore.Analyzers/Runtime/UseExceptionThrowHelpersTests.cs
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Expand Up @@ -177,6 +177,39 @@ string this[string name]
return name;
}
}

void NullableArg(int? arg)
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}

void GenericMethod<T>(T arg)
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}

void GenericMethodWithClassConstraint<T>(T arg) where T : class
{
{|CA1510:if (arg is null) throw new ArgumentNullException(nameof(arg));|}
}

void GenericMethodWithTypeConstraint<T>(T arg) where T : C
{
{|CA1510:if (arg is null) throw new ArgumentNullException(nameof(arg));|}
}

void GenericMethodWithInterfaceConstraint<T>(T arg) where T : IDisposable
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}
}

class GenericType<T>
{
void M(T arg)
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}
}
",
FixedCode =
Expand Down Expand Up @@ -260,6 +293,39 @@ string this[string name]
return name;
}
}

void NullableArg(int? arg)
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}

void GenericMethod<T>(T arg)
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}

void GenericMethodWithClassConstraint<T>(T arg) where T : class
{
ArgumentNullException.ThrowIfNull(arg);
}

void GenericMethodWithTypeConstraint<T>(T arg) where T : C
{
ArgumentNullException.ThrowIfNull(arg);
}

void GenericMethodWithInterfaceConstraint<T>(T arg) where T : IDisposable
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}
}

class GenericType<T>
{
void M(T arg)
{
if (arg is null) throw new ArgumentNullException(nameof(arg));
}
}
"
}.RunAsync();
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