63 lines
2.6 KiB
C#
63 lines
2.6 KiB
C#
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using System.Collections.Immutable;
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using Microsoft.CodeAnalysis.CSharp.Symbols;
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using Microsoft.CodeAnalysis.CodeGen;
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using Microsoft.CodeAnalysis.PooledObjects;
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using Roslyn.Utilities;
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namespace Microsoft.CodeAnalysis.CSharp;
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internal sealed class AsyncStateMachine : StateMachineTypeSymbol
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{
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private readonly TypeKind _typeKind;
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private readonly MethodSymbol _constructor;
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private readonly ImmutableArray<NamedTypeSymbol> _interfaces;
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internal readonly TypeSymbol IteratorElementType;
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public override TypeKind TypeKind => _typeKind;
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internal override MethodSymbol Constructor => _constructor;
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internal override bool IsRecord => false;
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internal override bool IsRecordStruct => false;
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public AsyncStateMachine(VariableSlotAllocator variableAllocatorOpt, TypeCompilationState compilationState, MethodSymbol asyncMethod, int asyncMethodOrdinal, TypeKind typeKind)
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: base(variableAllocatorOpt, compilationState, asyncMethod, asyncMethodOrdinal)
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{
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//IL_000c: Unknown result type (might be due to invalid IL or missing references)
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//IL_000e: Unknown result type (might be due to invalid IL or missing references)
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_typeKind = typeKind;
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CSharpCompilation declaringCompilation = asyncMethod.DeclaringCompilation;
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ArrayBuilder<NamedTypeSymbol> instance = ArrayBuilder<NamedTypeSymbol>.GetInstance();
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bool isIterator = asyncMethod.IsIterator;
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if (isIterator)
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{
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TypeSymbol typeSymbol = (IteratorElementType = base.TypeMap.SubstituteType(asyncMethod.IteratorElementTypeWithAnnotations).Type);
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if (asyncMethod.IsAsyncReturningIAsyncEnumerable(declaringCompilation))
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{
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instance.Add(declaringCompilation.GetWellKnownType((WellKnownType)288).Construct(typeSymbol));
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}
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instance.Add(declaringCompilation.GetWellKnownType((WellKnownType)289).Construct(typeSymbol));
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instance.Add(declaringCompilation.GetWellKnownType((WellKnownType)293).Construct(declaringCompilation.GetSpecialType((SpecialType)7)));
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instance.Add(declaringCompilation.GetWellKnownType((WellKnownType)294));
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instance.Add(declaringCompilation.GetWellKnownType((WellKnownType)287));
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}
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instance.Add(declaringCompilation.GetWellKnownType((WellKnownType)242));
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_interfaces = instance.ToImmutableAndFree();
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_constructor = (isIterator ? ((SynthesizedInstanceConstructor)new IteratorConstructor(this)) : ((SynthesizedInstanceConstructor)new AsyncConstructor(this)));
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}
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internal override bool HasPossibleWellKnownCloneMethod()
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{
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return false;
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}
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internal override ImmutableArray<NamedTypeSymbol> InterfacesNoUseSiteDiagnostics(ConsList<TypeSymbol> basesBeingResolved)
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{
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return _interfaces;
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}
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}
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