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Add doc for GetInferredNullableAnnotation #80245

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Merged
merged 2 commits into from
Sep 11, 2025
Merged

Add doc for GetInferredNullableAnnotation #80245

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f4de627
Add doc for GetInferredNullableAnnotation
RikkiGibson Sep 11, 2025
f373e31
Add public API remark
RikkiGibson Sep 11, 2025
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8 changes: 8 additions & 0 deletions src/Compilers/CSharp/Portable/Symbols/Synthesized/SynthesizedBackingFieldSymbol.cs
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Expand Up @@ -147,6 +147,14 @@ internal bool InfersNullableAnnotation
}
}

/// <summary>
/// Gets the inferred nullable annotation of the backing field,
/// potentially binding and nullable-analyzing the associated get accessor.
/// </summary>
/// <remarks>
/// The <see cref="FieldSymbol.TypeWithAnnotations"/> for this symbol does not expose this inferred nullable annotation.
/// For that API, the nullable annotation of the associated property is used instead.
/// </remarks>
internal NullableAnnotation GetInferredNullableAnnotation()
{
if (_inferredNullableAnnotation == (int)NullableAnnotation.Ignored)
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5 changes: 5 additions & 0 deletions src/Compilers/Core/Portable/Symbols/IFieldSymbol.cs
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Expand Up @@ -79,6 +79,11 @@ public interface IFieldSymbol : ISymbol
/// <summary>
/// Gets the top-level nullability of this field.
/// </summary>
/// <remarks>
/// The inferred nullability of a backing field symbol (for example, the symbol for a <see langword="field"/> keyword) is not exposed by this API.
/// In that case, this API returns the nullable annotation of the associated property.
/// The inferred nullability is only exposed indirectly via APIs that give information about expressions, such as <see cref="SemanticModel.GetTypeInfo"/> when called with a <see langword="field"/> expression.
/// </remarks>
NullableAnnotation NullableAnnotation { get; }

/// <summary>
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