private void InitializeNullableFlagsAndOriginalNullability(ref int nullableFlagsIndex, IEnumerable <dynamic> customAttributeProviders)
{
try
{
if (_nullableFlags == null)
{
var nullableAttribute = ContextAttributes.FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute != null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else if (customAttributeProviders != null)
{
_nullableFlags = GetFlagsFromCustomAttributeProviders(customAttributeProviders);
}
else
{
_nullableFlags = new byte[] { 0 };
}
}
}
catch
{
_nullableFlags = new byte[] { 0 };
#if DEBUG
throw;
#endif
}
if (OriginalType.GetTypeInfo().IsValueType)
{
OriginalNullability = Nullability.NotNullable;
}
else
{
var nullableFlag = _nullableFlags.Length > nullableFlagsIndex ? _nullableFlags[nullableFlagsIndex] : _nullableFlags.Last();
nullableFlagsIndex++;
OriginalNullability = nullableFlag == 0 ? Nullability.Unknown :
nullableFlag == 1 ? Nullability.NotNullable :
nullableFlag == 2 ? Nullability.Nullable :
Nullability.Unknown;
}
}
private void InitializeNullableFlagsAndOriginalNullability(ref int nullableFlagsIndex, IEnumerable <dynamic> customAttributeProviders)
{
try
{
if (_nullableFlags == null)
{
var nullableAttribute = ContextAttributes.FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute != null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else if (customAttributeProviders != null)
{
_nullableFlags = GetFlagsFromCustomAttributeProviders(customAttributeProviders);
}
else
{
_nullableFlags = new byte[] { 0 };
}
}
}
catch
{
_nullableFlags = new byte[] { 0 };
#if DEBUG
throw;
#endif
}
if (OriginalType.GetTypeInfo() is var typeInfo && typeInfo.IsValueType)
{
if (typeInfo.IsGenericType && typeInfo.GetGenericTypeDefinition() != typeof(Nullable <>))
{
nullableFlagsIndex++;
}
OriginalNullability = Nullability.NotNullable;
}
private void InitializeNullableFlagsAndOriginalNullability(ref int nullableFlagsIndex, IEnumerable <dynamic>?customAttributeProviders)
{
var typeInfo = OriginalType.GetTypeInfo();
try
{
if (_nullableFlags == null)
{
var nullableAttribute = ContextAttributes.FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute is not null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else if (typeInfo.IsGenericParameter)
{
nullableAttribute = typeInfo.GetCustomAttributes().FirstOrDefault(a => a.GetType().FullName == "System.Runtime.CompilerServices.NullableAttribute");
if (nullableAttribute is not null)
{
_nullableFlags = GetFlagsFromNullableAttribute(nullableAttribute);
}
else
{
// Default nullability (NullableContextAttribute) from the context
_nullableFlags = GetFlagsFromCustomAttributeProviders(typeInfo.DeclaringType.IsNested ? new dynamic[] { typeInfo.DeclaringType, typeInfo.DeclaringType.DeclaringType } : new dynamic[] { typeInfo.DeclaringType });
}
}
else if (customAttributeProviders is not null)
{
// Default nullability (NullableContextAttribute) from the context
_nullableFlags = GetFlagsFromCustomAttributeProviders(customAttributeProviders);
}
else
{
_nullableFlags = new byte[] { 0 }; // Unknown
}
}
}
catch
{
_nullableFlags = new byte[] { 0 };
#if DEBUG
throw;
#endif
}
if (typeInfo.IsValueType)
{
if (typeInfo.IsGenericType && typeInfo.GetGenericTypeDefinition() != typeof(Nullable <>))
{
nullableFlagsIndex++;
}
OriginalNullability = Nullability.NotNullable;
}
else
{
var nullableFlag = _nullableFlags.Length > nullableFlagsIndex ? _nullableFlags[nullableFlagsIndex] : _nullableFlags.Last();
nullableFlagsIndex++;
OriginalNullability = nullableFlag == 0 ? Nullability.Unknown :
nullableFlag == 1 ? Nullability.NotNullable :
nullableFlag == 2 ? Nullability.Nullable :
Nullability.Unknown;
}
}
