using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.CodeAnalysis.PooledObjects;

namespace Microsoft.CodeAnalysis.CSharp.Symbols;

internal sealed class SynthesizedEmbeddedNullablePublicOnlyAttributeSymbol : SynthesizedEmbeddedAttributeSymbolBase
{
	private readonly ImmutableArray<FieldSymbol> _fields;

	private readonly ImmutableArray<MethodSymbol> _constructors;

	public override ImmutableArray<MethodSymbol> Constructors => _constructors;

	public SynthesizedEmbeddedNullablePublicOnlyAttributeSymbol(string name, NamespaceSymbol containingNamespace, ModuleSymbol containingModule, NamedTypeSymbol systemAttributeType, TypeSymbol systemBooleanType)
		: base(name, containingNamespace, containingModule, systemAttributeType)
	{
		_fields = ImmutableArray.Create((FieldSymbol)new SynthesizedFieldSymbol(this, systemBooleanType, "IncludesInternals", isPublic: true, isReadOnly: true));
		_constructors = ImmutableArray.Create((MethodSymbol)new SynthesizedEmbeddedAttributeConstructorWithBodySymbol(this, (MethodSymbol m) => ImmutableArray.Create(SynthesizedParameterSymbol.Create(m, TypeWithAnnotations.Create(systemBooleanType), 0, (RefKind)0, "", (ScopedKind)0)), GenerateConstructorBody));
	}

	internal override IEnumerable<FieldSymbol> GetFieldsToEmit()
	{
		return _fields;
	}

	internal override AttributeUsageInfo GetAttributeUsageInfo()
	{
		//IL_0003: Unknown result type (might be due to invalid IL or missing references)
		return new AttributeUsageInfo(AttributeTargets.Module, false, false);
	}

	private void GenerateConstructorBody(SyntheticBoundNodeFactory factory, ArrayBuilder<BoundStatement> statements, ImmutableArray<ParameterSymbol> parameters)
	{
		statements.Add((BoundStatement)factory.ExpressionStatement(factory.AssignmentExpression(factory.Field(factory.This(), _fields.Single()), factory.Parameter(parameters.Single()))));
	}
}