internal static InstanceProvider?ForDefault(AttributedMembers attrMembers, INamedTypeSymbol type, ref ImmutableArray <Diagnostic> diags)
{
var(isRecord, recordCons, _) = type.IsRecord();
if (isRecord)
{
recordCons = Utils.NonNull(recordCons);
return(new InstanceProvider(true, recordCons, type));
}
var defaultCons = type.InstanceConstructors.SingleOrDefault(p => p.Parameters.Length == 0);
if (defaultCons != null)
{
var accessible = defaultCons.IsAccessible(attrMembers);
if (!accessible)
{
var diag = Diagnostics.MethodNotPublicOrInternal(defaultCons.Locations.FirstOrDefault(), defaultCons);
diags = diags.Add(diag);
return(null);
}
return(new InstanceProvider(type));
}
else
{
var diag = Diagnostics.NoInstanceProvider(type.Locations.FirstOrDefault(), type);
diags = diags.Add(diag);
return(null);
}
}
