internal bool IsSecurityAttribute(CSharpCompilation compilation)
{
if (_lazyIsSecurityAttribute == ThreeState.Unknown)
{
Debug.Assert(!this.HasErrors);
// CLI spec (Partition II Metadata), section 21.11 "DeclSecurity : 0x0E" states:
// SPEC: If the attribute's type is derived (directly or indirectly) from System.Security.Permissions.SecurityAttribute then
// SPEC: it is a security custom attribute and requires special treatment.
// NOTE: The native C# compiler violates the above and considers only those attributes whose type derives from
// NOTE: System.Security.Permissions.CodeAccessSecurityAttribute as security custom attributes.
// NOTE: We will follow the specification.
// NOTE: See Devdiv Bug #13762 "Custom security attributes deriving from SecurityAttribute are not treated as security attributes" for details.
// Well-known type SecurityAttribute is optional.
// Native compiler doesn't generate a use-site error if it is not found, we do the same.
var wellKnownType = compilation.GetWellKnownType(WellKnownType.System_Security_Permissions_SecurityAttribute);
Debug.Assert(AttributeClass is object);
HashSet <DiagnosticInfo>?useSiteDiagnostics = null;
_lazyIsSecurityAttribute = AttributeClass.IsDerivedFrom(wellKnownType, TypeCompareKind.ConsiderEverything, useSiteDiagnostics: ref useSiteDiagnostics).ToThreeState();
}
return(_lazyIsSecurityAttribute.Value());
}
public override ImmutableArray <CSharpAttributeData> GetAttributes()
{
if (_lazyCustomAttributes.IsDefault)
{
Debug.Assert(!_handle.IsNil);
var containingPEModuleSymbol = (PEModuleSymbol)this.ContainingModule;
// Filter out ParamArrayAttributes if necessary and cache
// the attribute handle for GetCustomAttributesToEmit
bool filterOutParamArrayAttribute = (!_lazyIsParams.HasValue() || _lazyIsParams.Value());
ConstantValue defaultValue = this.ExplicitDefaultConstantValue;
AttributeDescription filterOutConstantAttributeDescription = default(AttributeDescription);
bool filterIsReadOnlyAttribute = this.RefKind == RefKind.In;
if (filterOutParamArrayAttribute || filterOutConstantAttributeDescription.Signatures != null || filterIsReadOnlyAttribute)
{
CustomAttributeHandle paramArrayAttribute;
CustomAttributeHandle constantAttribute;
CustomAttributeHandle isReadOnlyAttribute;
ImmutableArray <CSharpAttributeData> attributes =
containingPEModuleSymbol.GetCustomAttributesForToken(
_handle,
out paramArrayAttribute,
filterOutParamArrayAttribute ? AttributeDescription.ParamArrayAttribute : default,
internal bool ShouldEmit(ImmutableArray <BoundInitializer> boundInitializersOpt = default)
{
if (_lazyShouldEmit.HasValue())
{
return(_lazyShouldEmit.Value());
}
var shouldEmit = CalculateShouldEmit(boundInitializersOpt);
_lazyShouldEmit = shouldEmit.ToThreeState();
return(shouldEmit);
}
public override ImmutableArray <CSharpAttributeData> GetAttributes()
{
if (_lazyCustomAttributes.IsDefault)
{
Debug.Assert(!_handle.IsNil);
var containingPEModuleSymbol = (PEModuleSymbol)this.ContainingModule;
// Filter out ParamArrayAttributes if necessary and cache
// the attribute handle for GetCustomAttributesToEmit
bool filterOutParamArrayAttribute = (!_lazyIsParams.HasValue() || _lazyIsParams.Value());
ConstantValue defaultValue = this.ExplicitDefaultConstantValue;
AttributeDescription filterOutConstantAttributeDescription = default(AttributeDescription);
if ((object)defaultValue != null)
{
if (defaultValue.Discriminator == ConstantValueTypeDiscriminator.DateTime)
{
filterOutConstantAttributeDescription = AttributeDescription.DateTimeConstantAttribute;
}
else if (defaultValue.Discriminator == ConstantValueTypeDiscriminator.Decimal)
{
filterOutConstantAttributeDescription = AttributeDescription.DecimalConstantAttribute;
}
}
if (filterOutParamArrayAttribute || filterOutConstantAttributeDescription.Signatures != null)
{
CustomAttributeHandle paramArrayAttribute;
CustomAttributeHandle constantAttribute;
ImmutableArray <CSharpAttributeData> attributes =
containingPEModuleSymbol.GetCustomAttributesForToken(
_handle,
out paramArrayAttribute,
filterOutParamArrayAttribute ? AttributeDescription.ParamArrayAttribute : default(AttributeDescription),
out constantAttribute,
filterOutConstantAttributeDescription);
if (!paramArrayAttribute.IsNil || !constantAttribute.IsNil)
{
var builder = ArrayBuilder <CSharpAttributeData> .GetInstance();
if (!paramArrayAttribute.IsNil)
{
builder.Add(new PEAttributeData(containingPEModuleSymbol, paramArrayAttribute));
}
if (!constantAttribute.IsNil)
{
builder.Add(new PEAttributeData(containingPEModuleSymbol, constantAttribute));
}
ImmutableInterlocked.InterlockedInitialize(ref _lazyHiddenAttributes, builder.ToImmutableAndFree());
}
else
{
ImmutableInterlocked.InterlockedInitialize(ref _lazyHiddenAttributes, ImmutableArray <CSharpAttributeData> .Empty);
}
if (!_lazyIsParams.HasValue())
{
Debug.Assert(filterOutParamArrayAttribute);
_lazyIsParams = (!paramArrayAttribute.IsNil).ToThreeState();
}
ImmutableInterlocked.InterlockedInitialize(
ref _lazyCustomAttributes,
attributes);
}
else
{
ImmutableInterlocked.InterlockedInitialize(ref _lazyHiddenAttributes, ImmutableArray <CSharpAttributeData> .Empty);
containingPEModuleSymbol.LoadCustomAttributes(_handle, ref _lazyCustomAttributes);
}
}
Debug.Assert(!_lazyHiddenAttributes.IsDefault);
return(_lazyCustomAttributes);
}
private static bool IsViableSourceMethod(MethodSymbol candidateMethod, string desiredMethodName, ImmutableArray<TypeParameterSymbol> desiredTypeParameters, ThreeState isDesiredMethodStatic)
{
return
!candidateMethod.IsAbstract &&
(isDesiredMethodStatic == ThreeState.Unknown || isDesiredMethodStatic.Value() == candidateMethod.IsStatic) &&
candidateMethod.Name == desiredMethodName &&
HaveSameConstraints(candidateMethod.TypeParameters, desiredTypeParameters);
}