private ArrayTypeSymbol SubstituteArrayType(ArrayTypeSymbol t)
{
var oldElement = t.ElementTypeWithAnnotations;
TypeWithAnnotations element = oldElement.SubstituteType(this);
if (element.IsSameAs(oldElement))
{
return(t);
}
if (t.IsSZArray)
{
ImmutableArray <NamedTypeSymbol> interfaces = t.InterfacesNoUseSiteDiagnostics();
Debug.Assert(0 <= interfaces.Length && interfaces.Length <= 2);
if (interfaces.Length == 1)
{
Debug.Assert(interfaces[0] is NamedTypeSymbol); // IList<T>
interfaces = ImmutableArray.Create <NamedTypeSymbol>(
SubstituteNamedType(interfaces[0])
);
}
else if (interfaces.Length == 2)
{
Debug.Assert(interfaces[0] is NamedTypeSymbol); // IList<T>
interfaces = ImmutableArray.Create <NamedTypeSymbol>(
SubstituteNamedType(interfaces[0]),
SubstituteNamedType(interfaces[1])
);
}
else if (interfaces.Length != 0)
{
throw ExceptionUtilities.Unreachable;
}
return(ArrayTypeSymbol.CreateSZArray(
element,
t.BaseTypeNoUseSiteDiagnostics,
interfaces
));
}
return(ArrayTypeSymbol.CreateMDArray(
element,
t.Rank,
t.Sizes,
t.LowerBounds,
t.BaseTypeNoUseSiteDiagnostics
));
}