/// <remarks>
/// These won't be returned by GetAttributes on source methods, but they
/// will be returned by GetAttributes on metadata symbols.
/// </remarks>
internal override void AddSynthesizedAttributes(PEModuleBuilder moduleBuilder, ref ArrayBuilder <SynthesizedAttributeData> attributes)
{
base.AddSynthesizedAttributes(moduleBuilder, ref attributes);
CSharpCompilation compilation = this.DeclaringCompilation;
if (this.ContainsExtensionMethods)
{
// No need to check if [Extension] attribute was explicitly set since
// we'll issue CS1112 error in those cases and won't generate IL.
AddSynthesizedAttribute(ref attributes, compilation.TrySynthesizeAttribute(WellKnownMember.System_Runtime_CompilerServices_ExtensionAttribute__ctor));
}
if (this.IsRefLikeType)
{
AddSynthesizedAttribute(ref attributes, moduleBuilder.SynthesizeIsByRefLikeAttribute(this));
var obsoleteData = ObsoleteAttributeData;
Debug.Assert(obsoleteData != ObsoleteAttributeData.Uninitialized, "getting synthesized attributes before attributes are decoded");
// If user specified an Obsolete attribute, we cannot emit ours.
// NB: we do not check the kind of deprecation.
// we will not emit Obsolete even if Deprecated or Experimental was used.
// we do not want to get into a scenario where different kinds of deprecation are combined together.
//
if (obsoleteData == null && !this.IsRestrictedType(ignoreSpanLikeTypes: true))
{
AddSynthesizedAttribute(ref attributes, compilation.TrySynthesizeAttribute(WellKnownMember.System_ObsoleteAttribute__ctor,
ImmutableArray.Create(
new TypedConstant(compilation.GetSpecialType(SpecialType.System_String), TypedConstantKind.Primitive, PEModule.ByRefLikeMarker), // message
new TypedConstant(compilation.GetSpecialType(SpecialType.System_Boolean), TypedConstantKind.Primitive, true)), // error=true
isOptionalUse: true));
}
}
if (this.IsReadOnly)
{
AddSynthesizedAttribute(ref attributes, moduleBuilder.SynthesizeIsReadOnlyAttribute(this));
}
if (this.Indexers.Any())
{
string defaultMemberName = this.Indexers.First().MetadataName; // UNDONE: IndexerNameAttribute
var defaultMemberNameConstant = new TypedConstant(compilation.GetSpecialType(SpecialType.System_String), TypedConstantKind.Primitive, defaultMemberName);
AddSynthesizedAttribute(ref attributes, compilation.TrySynthesizeAttribute(
WellKnownMember.core_runtime_DefaultMemberAttribute__ctor,
ImmutableArray.Create(defaultMemberNameConstant)));
}
NamedTypeSymbol baseType = this.BaseTypeNoUseSiteDiagnostics;
if ((object)baseType != null)
{
if (baseType.ContainsTupleNames())
{
AddSynthesizedAttribute(ref attributes, compilation.SynthesizeTupleNamesAttribute(baseType));
}
if (baseType.NeedsNullableAttribute())
{
AddSynthesizedAttribute(ref attributes, moduleBuilder.SynthesizeNullableAttribute(this, TypeSymbolWithAnnotations.Create(baseType)));
}
}
}