private readonly bool _cannotUse; // With LanguageVersion 7, we will produce named elements that should not be used
public TupleVirtualElementFieldSymbol(
NamedTypeSymbol container,
FieldSymbol underlyingField,
string name,
int tupleElementIndex,
ImmutableArray <Location> locations,
bool cannotUse,
bool isImplicitlyDeclared,
FieldSymbol?correspondingDefaultFieldOpt
)
: base(
container,
underlyingField,
tupleElementIndex,
locations,
isImplicitlyDeclared,
correspondingDefaultFieldOpt
)
{
// The underlying field for 'Hanna' (an 8-th named element) in a long tuple is Item1. The corresponding field is Item8.
Debug.Assert(container.IsTupleType);
Debug.Assert(underlyingField.ContainingType.IsTupleType);
Debug.Assert(name != null);
Debug.Assert(
name != underlyingField.Name ||
!container.Equals(
underlyingField.ContainingType,
TypeCompareKind.IgnoreDynamicAndTupleNames
),
"fields that map directly to underlying should not be represented by "
+ nameof(TupleVirtualElementFieldSymbol)
);
Debug.Assert(
(correspondingDefaultFieldOpt is null)
== (NamedTypeSymbol.TupleMemberName(tupleElementIndex + 1) == name)
);
Debug.Assert(!(correspondingDefaultFieldOpt is TupleErrorFieldSymbol));
_name = name;
_cannotUse = cannotUse;
}
