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feat: Remove runtime dependency on Riok.Mapperly.Abstractions
Creates a new Riok.Mapperly.Templates project with templates. Some Mapperly features may require such a template (currently only the reference handling). If such a template is required by a used Mapperly feature, Mapperly emites the template in a namespace which includes the name of the assembly of the target project. This is done to prevent collisions when using InternalsVisibleTo (see riok#685). Currently the only themplate is the PreserveReferenceHandler which is emitted if reference handling is enabled for any mapper and the mapper does have mapper method definitions without a reference handling parameter and Mapperly needs to instantiate a IReferenceHandler.
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63 changes: 0 additions & 63 deletions
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src/Riok.Mapperly.Abstractions/ReferenceHandling/Internal/PreserveReferenceHandler.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| # keep namespaces block scoped, because .NET Framework language version does not support this | ||
| [*.cs] | ||
| csharp_style_namespace_declarations = block_scoped:warning |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Runtime.CompilerServices; | ||
| using Riok.Mapperly.Abstractions.ReferenceHandling; | ||
|
|
||
| #nullable enable | ||
|
|
||
| namespace Riok.Mapperly.Internal.AssemblyName | ||
| { | ||
| /// <summary> | ||
| /// A <see cref="IReferenceHandler"/> implementation | ||
| /// which returns the same target object instance if encountered the same source object instance. | ||
| /// Do not use directly. Should only be used by Mapperly generated code. | ||
| /// API surface is not subject to semantic releases and may break in any release. | ||
| /// </summary> | ||
| internal sealed class PreserveReferenceHandler : IReferenceHandler | ||
| { | ||
| private readonly Dictionary<(Type, Type), ReferenceHolder> _referenceHolders = new(); | ||
|
|
||
| // disable nullability since older target frameworks | ||
| // may not support the NotNullWhenAttribute | ||
| #nullable disable | ||
| /// <inheritdoc cref="IReferenceHandler.TryGetReference{TSource,TTarget}"/> | ||
| public bool TryGetReference<TSource, TTarget>(TSource source, out TTarget target) | ||
| where TSource : notnull | ||
| where TTarget : notnull | ||
| { | ||
| var refHolder = GetReferenceHolder<TSource, TTarget>(); | ||
| return refHolder.TryGetRef(source, out target); | ||
| } | ||
|
|
||
| #nullable enable | ||
|
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| /// <inheritdoc cref="IReferenceHandler.SetReference{TSource,TTarget}"/> | ||
| public void SetReference<TSource, TTarget>(TSource source, TTarget target) | ||
| where TSource : notnull | ||
| where TTarget : notnull => GetReferenceHolder<TSource, TTarget>().SetRef(source, target); | ||
|
|
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| private ReferenceHolder GetReferenceHolder<TSource, TTarget>() | ||
| { | ||
| var mapping = (typeof(TSource), typeof(TTarget)); | ||
| if (_referenceHolders.TryGetValue(mapping, out var refHolder)) | ||
| return refHolder; | ||
|
|
||
| return _referenceHolders[mapping] = new(); | ||
| } | ||
|
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| private sealed class ReferenceEqualityComparer<T> : IEqualityComparer<T> | ||
| { | ||
| // cannot use System.Collections.Generic.ReferenceEqualityComparer since it is not available in netstandard2.0 | ||
|
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| public static readonly IEqualityComparer<T> Instance = new ReferenceEqualityComparer<T>(); | ||
|
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| private ReferenceEqualityComparer() { } | ||
|
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| bool IEqualityComparer<T>.Equals(T? x, T? y) => ReferenceEquals(x, y); | ||
|
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| int IEqualityComparer<T>.GetHashCode(T obj) => RuntimeHelpers.GetHashCode(obj); | ||
| } | ||
|
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| private class ReferenceHolder | ||
| { | ||
| private readonly Dictionary<object, object> _references = new(ReferenceEqualityComparer<object>.Instance); | ||
|
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| // disable nullability since older target frameworks | ||
| // may not support the NotNullWhenAttribute | ||
| #nullable disable | ||
| public bool TryGetRef<TSource, TTarget>(TSource source, out TTarget target) | ||
| where TSource : notnull | ||
| where TTarget : notnull | ||
| { | ||
| if (_references.TryGetValue(source, out var targetObj)) | ||
| { | ||
| target = (TTarget)targetObj; | ||
| return true; | ||
| } | ||
|
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| target = default; | ||
| return false; | ||
| } | ||
|
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| #nullable enable | ||
|
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| public void SetRef<TSource, TTarget>(TSource source, TTarget target) | ||
| where TSource : notnull | ||
| where TTarget : notnull | ||
| { | ||
| _references[source] = target; | ||
| } | ||
| } | ||
| } | ||
| } |
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