using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Runtime.InteropServices;
using Microsoft.Cci;
using Microsoft.CodeAnalysis.CSharp.Emit;
using Microsoft.CodeAnalysis.CSharp.Emit.NoPia;
using Microsoft.CodeAnalysis.Emit;
using Microsoft.CodeAnalysis.PooledObjects;
using Roslyn.Utilities;

namespace Microsoft.CodeAnalysis.CSharp.Symbols;

internal abstract class SynthesizedEmbeddedAttributeSymbolBase : NamedTypeSymbol
{
	private readonly string _name;

	private readonly NamedTypeSymbol _baseType;

	private readonly NamespaceSymbol _namespace;

	private readonly ModuleSymbol _module;

	public new abstract ImmutableArray<MethodSymbol> Constructors { get; }

	public override int Arity => 0;

	public override ImmutableArray<TypeParameterSymbol> TypeParameters => ImmutableArray<TypeParameterSymbol>.Empty;

	public override bool IsImplicitlyDeclared => true;

	public override NamedTypeSymbol ConstructedFrom => this;

	public override bool MightContainExtensionMethods => false;

	public override string Name => _name;

	public override IEnumerable<string> MemberNames => Constructors.Select((MethodSymbol m) => m.Name);

	internal override bool HasDeclaredRequiredMembers => false;

	public override Accessibility DeclaredAccessibility => (Accessibility)4;

	public override TypeKind TypeKind => (TypeKind)2;

	public override Symbol ContainingSymbol => _namespace;

	internal override ModuleSymbol ContainingModule => _module;

	public override AssemblySymbol ContainingAssembly => _module.ContainingAssembly;

	public override NamespaceSymbol ContainingNamespace => _namespace;

	public override ImmutableArray<Location> Locations => ImmutableArray<Location>.Empty;

	public override ImmutableArray<SyntaxReference> DeclaringSyntaxReferences => ImmutableArray<SyntaxReference>.Empty;

	public override bool IsStatic => false;

	public override bool IsRefLikeType => false;

	public override bool IsReadOnly => false;

	public override bool IsAbstract => false;

	public override bool IsSealed => true;

	internal override ImmutableArray<TypeWithAnnotations> TypeArgumentsWithAnnotationsNoUseSiteDiagnostics => ImmutableArray<TypeWithAnnotations>.Empty;

	internal override bool MangleName => false;

	internal sealed override bool IsFileLocal => false;

	internal sealed override FileIdentifier AssociatedFileIdentifier => null;

	internal override bool HasCodeAnalysisEmbeddedAttribute => true;

	internal override bool IsInterpolatedStringHandlerType => false;

	internal override bool HasSpecialName => false;

	internal override bool IsComImport => false;

	internal override bool IsWindowsRuntimeImport => false;

	internal override bool ShouldAddWinRTMembers => false;

	public override bool IsSerializable => false;

	public sealed override bool AreLocalsZeroed => ContainingModule.AreLocalsZeroed;

	internal override TypeLayout Layout => default(TypeLayout);

	internal override CharSet MarshallingCharSet => base.DefaultMarshallingCharSet;

	internal override bool HasDeclarativeSecurity => false;

	internal override bool IsInterface => false;

	internal override NamedTypeSymbol BaseTypeNoUseSiteDiagnostics => _baseType;

	internal override ObsoleteAttributeData ObsoleteAttributeData => null;

	internal sealed override bool IsRecord => false;

	internal sealed override bool IsRecordStruct => false;

	internal sealed override NamedTypeSymbol NativeIntegerUnderlyingType => null;

	public SynthesizedEmbeddedAttributeSymbolBase(string name, NamespaceSymbol containingNamespace, ModuleSymbol containingModule, NamedTypeSymbol baseType)
	{
		_name = name;
		_namespace = containingNamespace;
		_module = containingModule;
		_baseType = baseType;
	}

	internal override ManagedKind GetManagedKind(ref CompoundUseSiteInfo<AssemblySymbol> useSiteInfo)
	{
		return (ManagedKind)3;
	}

	protected override NamedTypeSymbol WithTupleDataCore(TupleExtraData newData)
	{
		throw ExceptionUtilities.Unreachable("/_/src/Compilers/CSharp/Portable/Symbols/Synthesized/SynthesizedEmbeddedAttributeSymbol.cs", 133);
	}

	public override ImmutableArray<Symbol> GetMembers()
	{
		return Constructors.CastArray<Symbol>();
	}

	public override ImmutableArray<Symbol> GetMembers(string name)
	{
		if (!(name == ".ctor"))
		{
			return ImmutableArray<Symbol>.Empty;
		}
		return Constructors.CastArray<Symbol>();
	}

	public override ImmutableArray<NamedTypeSymbol> GetTypeMembers()
	{
		return ImmutableArray<NamedTypeSymbol>.Empty;
	}

	public override ImmutableArray<NamedTypeSymbol> GetTypeMembers(ReadOnlyMemory<char> name)
	{
		return ImmutableArray<NamedTypeSymbol>.Empty;
	}

	public override ImmutableArray<NamedTypeSymbol> GetTypeMembers(ReadOnlyMemory<char> name, int arity)
	{
		return ImmutableArray<NamedTypeSymbol>.Empty;
	}

	internal override ImmutableArray<string> GetAppliedConditionalSymbols()
	{
		return ImmutableArray<string>.Empty;
	}

	internal override AttributeUsageInfo GetAttributeUsageInfo()
	{
		//IL_0000: Unknown result type (might be due to invalid IL or missing references)
		return AttributeUsageInfo.Default;
	}

	internal override NamedTypeSymbol GetDeclaredBaseType(ConsList<TypeSymbol> basesBeingResolved)
	{
		return _baseType;
	}

	internal override ImmutableArray<NamedTypeSymbol> GetDeclaredInterfaces(ConsList<TypeSymbol> basesBeingResolved)
	{
		return ImmutableArray<NamedTypeSymbol>.Empty;
	}

	internal override ImmutableArray<Symbol> GetEarlyAttributeDecodingMembers()
	{
		return GetMembers();
	}

	internal override ImmutableArray<Symbol> GetEarlyAttributeDecodingMembers(string name)
	{
		return GetMembers(name);
	}

	internal override IEnumerable<FieldSymbol> GetFieldsToEmit()
	{
		return SpecializedCollections.EmptyEnumerable<FieldSymbol>();
	}

	internal override ImmutableArray<NamedTypeSymbol> GetInterfacesToEmit()
	{
		return ImmutableArray<NamedTypeSymbol>.Empty;
	}

	internal override IEnumerable<SecurityAttribute> GetSecurityInformation()
	{
		return null;
	}

	internal override ImmutableArray<NamedTypeSymbol> InterfacesNoUseSiteDiagnostics(ConsList<TypeSymbol> basesBeingResolved = null)
	{
		return ImmutableArray<NamedTypeSymbol>.Empty;
	}

	internal sealed override bool HasPossibleWellKnownCloneMethod()
	{
		return false;
	}

	internal override void AddSynthesizedAttributes(PEModuleBuilder moduleBuilder, ref ArrayBuilder<SynthesizedAttributeData> attributes)
	{
		//IL_003b: Unknown result type (might be due to invalid IL or missing references)
		//IL_0040: Unknown result type (might be due to invalid IL or missing references)
		//IL_0041: Unknown result type (might be due to invalid IL or missing references)
		//IL_0042: Unknown result type (might be due to invalid IL or missing references)
		base.AddSynthesizedAttributes(moduleBuilder, ref attributes);
		Symbol.AddSynthesizedAttribute(ref attributes, ((PEModuleBuilder<CSharpCompilation, SourceModuleSymbol, AssemblySymbol, TypeSymbol, NamedTypeSymbol, MethodSymbol, SyntaxNode, EmbeddedTypesManager, ModuleCompilationState>)moduleBuilder).Compilation.TrySynthesizeAttribute((WellKnownMember)112));
		Symbol.AddSynthesizedAttribute(ref attributes, moduleBuilder.SynthesizeEmbeddedAttribute());
		AttributeUsageInfo attributeUsageInfo = GetAttributeUsageInfo();
		if (attributeUsageInfo != AttributeUsageInfo.Default)
		{
			Symbol.AddSynthesizedAttribute(ref attributes, ((PEModuleBuilder<CSharpCompilation, SourceModuleSymbol, AssemblySymbol, TypeSymbol, NamedTypeSymbol, MethodSymbol, SyntaxNode, EmbeddedTypesManager, ModuleCompilationState>)moduleBuilder).Compilation.SynthesizeAttributeUsageAttribute(((AttributeUsageInfo)(ref attributeUsageInfo)).ValidTargets, ((AttributeUsageInfo)(ref attributeUsageInfo)).AllowMultiple, ((AttributeUsageInfo)(ref attributeUsageInfo)).Inherited));
		}
	}

	internal sealed override NamedTypeSymbol AsNativeInteger()
	{
		throw ExceptionUtilities.Unreachable("/_/src/Compilers/CSharp/Portable/Symbols/Synthesized/SynthesizedEmbeddedAttributeSymbol.cs", 190);
	}

	internal sealed override IEnumerable<(MethodSymbol Body, MethodSymbol Implemented)> SynthesizedInterfaceMethodImpls()
	{
		return SpecializedCollections.EmptyEnumerable<(MethodSymbol, MethodSymbol)>();
	}

	internal sealed override bool HasInlineArrayAttribute(out int length)
	{
		length = 0;
		return false;
	}

	internal sealed override bool HasCollectionBuilderAttribute(out TypeSymbol? builderType, out string? methodName)
	{
		builderType = null;
		methodName = null;
		return false;
	}
}