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Merge pull request #57135 from RikkiGibson/delegate-type-args
Support 'ref' type arguments in delegates
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157 changes: 157 additions & 0 deletions
157
src/Compilers/CSharp/Portable/Emitter/Model/RefTypeSymbolAdapter.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
| // See the LICENSE file in the project root for more information. | ||
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| #nullable disable | ||
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| using System.Collections.Immutable; | ||
| using System.Reflection.Metadata; | ||
| using Microsoft.CodeAnalysis.CSharp.Emit; | ||
| using Microsoft.CodeAnalysis.Emit; | ||
| using Roslyn.Utilities; | ||
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| namespace Microsoft.CodeAnalysis.CSharp.Symbols | ||
| { | ||
| internal partial class | ||
| #if DEBUG | ||
| RefTypeSymbolAdapter : SymbolAdapter, | ||
| #else | ||
| RefTypeSymbol : | ||
| #endif | ||
| Cci.IRefTypeReference | ||
| { | ||
| Cci.ITypeReference Cci.IRefTypeReference.GetReferencedType(EmitContext context) | ||
| { | ||
| var type = ((PEModuleBuilder)context.Module).Translate(AdaptedRefTypeSymbol.ReferencedTypeWithAnnotations.Type, syntaxNodeOpt: (CSharpSyntaxNode)context.SyntaxNode, diagnostics: context.Diagnostics); | ||
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| if (AdaptedRefTypeSymbol.ReferencedTypeWithAnnotations.CustomModifiers.Length == 0) | ||
| { | ||
| return type; | ||
| } | ||
| else | ||
| { | ||
| return new Cci.ModifiedTypeReference(type, ImmutableArray<Cci.ICustomModifier>.CastUp(AdaptedRefTypeSymbol.ReferencedTypeWithAnnotations.CustomModifiers)); | ||
| } | ||
| } | ||
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| bool Cci.ITypeReference.IsEnum | ||
| { | ||
| get { return false; } | ||
| } | ||
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| bool Cci.ITypeReference.IsValueType | ||
| { | ||
| get { return false; } | ||
| } | ||
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| Cci.ITypeDefinition Cci.ITypeReference.GetResolvedType(EmitContext context) | ||
| { | ||
| return null; | ||
| } | ||
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| Cci.PrimitiveTypeCode Cci.ITypeReference.TypeCode | ||
| { | ||
| get { return Cci.PrimitiveTypeCode.Reference; } | ||
| } | ||
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| TypeDefinitionHandle Cci.ITypeReference.TypeDef | ||
| { | ||
| get { return default(TypeDefinitionHandle); } | ||
| } | ||
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| Cci.IGenericMethodParameterReference Cci.ITypeReference.AsGenericMethodParameterReference | ||
| { | ||
| get { return null; } | ||
| } | ||
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| Cci.IGenericTypeInstanceReference Cci.ITypeReference.AsGenericTypeInstanceReference | ||
| { | ||
| get { return null; } | ||
| } | ||
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| Cci.IGenericTypeParameterReference Cci.ITypeReference.AsGenericTypeParameterReference | ||
| { | ||
| get { return null; } | ||
| } | ||
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| Cci.INamespaceTypeDefinition Cci.ITypeReference.AsNamespaceTypeDefinition(EmitContext context) | ||
| { | ||
| return null; | ||
| } | ||
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| Cci.INamespaceTypeReference Cci.ITypeReference.AsNamespaceTypeReference | ||
| { | ||
| get { return null; } | ||
| } | ||
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| Cci.INestedTypeDefinition Cci.ITypeReference.AsNestedTypeDefinition(EmitContext context) | ||
| { | ||
| return null; | ||
| } | ||
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| Cci.INestedTypeReference Cci.ITypeReference.AsNestedTypeReference | ||
| { | ||
| get { return null; } | ||
| } | ||
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| Cci.ISpecializedNestedTypeReference Cci.ITypeReference.AsSpecializedNestedTypeReference | ||
| { | ||
| get { return null; } | ||
| } | ||
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| Cci.ITypeDefinition Cci.ITypeReference.AsTypeDefinition(EmitContext context) | ||
| { | ||
| return null; | ||
| } | ||
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| void Cci.IReference.Dispatch(Cci.MetadataVisitor visitor) | ||
| { | ||
| visitor.Visit((Cci.IPointerTypeReference)this); | ||
| } | ||
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| Cci.IDefinition Cci.IReference.AsDefinition(EmitContext context) | ||
| { | ||
| return null; | ||
| } | ||
| } | ||
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| internal partial class RefTypeSymbol | ||
| { | ||
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| #if DEBUG | ||
| private RefTypeSymbolAdapter _lazyAdapter; | ||
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| protected sealed override SymbolAdapter GetCciAdapterImpl() => GetCciAdapter(); | ||
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| internal new RefTypeSymbolAdapter GetCciAdapter() | ||
| { | ||
| if (_lazyAdapter is null) | ||
| { | ||
| return InterlockedOperations.Initialize(ref _lazyAdapter, new RefTypeSymbolAdapter(this)); | ||
| } | ||
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| return _lazyAdapter; | ||
| } | ||
| #else | ||
| internal RefTypeSymbol AdaptedRefTypeSymbol => this; | ||
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| internal new RefTypeSymbol GetCciAdapter() | ||
| { | ||
| return this; | ||
| } | ||
| #endif | ||
| } | ||
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| #if DEBUG | ||
| internal partial class RefTypeSymbolAdapter | ||
| { | ||
| internal RefTypeSymbolAdapter(RefTypeSymbol underlyingRefTypeSymbol) | ||
| { | ||
| AdaptedRefTypeSymbol = underlyingRefTypeSymbol; | ||
| } | ||
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| internal sealed override Symbol AdaptedSymbol => AdaptedRefTypeSymbol; | ||
| internal RefTypeSymbol AdaptedRefTypeSymbol { get; } | ||
| } | ||
| #endif | ||
| } |
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34 changes: 34 additions & 0 deletions
34
src/Compilers/CSharp/Portable/Symbols/PublicModel/RefTypeSymbol.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| // Licensed to the .NET Foundation under one or more agreements. | ||
| // The .NET Foundation licenses this file to you under the MIT license. | ||
| // See the LICENSE file in the project root for more information. | ||
|
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| using System.Diagnostics; | ||
| using Roslyn.Utilities; | ||
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| namespace Microsoft.CodeAnalysis.CSharp.Symbols.PublicModel | ||
| { | ||
| // PROTOTYPE(delegate-type-arg): public model? | ||
| // internal sealed class RefTypeSymbol : TypeSymbol | ||
| // { | ||
| // private readonly Symbols.RefTypeSymbol _underlying; | ||
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| // internal override Symbols.TypeSymbol UnderlyingTypeSymbol => _underlying; | ||
| // internal override Symbols.NamespaceOrTypeSymbol UnderlyingNamespaceOrTypeSymbol => _underlying; | ||
| // internal override CSharp.Symbol UnderlyingSymbol => _underlying; | ||
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| // protected override void Accept(SymbolVisitor visitor) | ||
| // { | ||
| // _underlying.ReferencedTypeWithAnnotations.Accept | ||
| // } | ||
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| // protected override TResult Accept<TResult>(SymbolVisitor<TResult> visitor) | ||
| // { | ||
| // throw new System.NotImplementedException(); | ||
| // } | ||
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| // protected override ITypeSymbol WithNullableAnnotation(CodeAnalysis.NullableAnnotation nullableAnnotation) | ||
| // { | ||
| // throw new System.NotImplementedException(); | ||
| // } | ||
| // } | ||
| } |
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