/// <summary>
/// Enumerate members which will be serialized for the given type.
///
/// Note that these members are generated ahead of time with a source gneerator,
/// and cannot be changed at runtime.
/// </summary>
public IEnumerable <SerializableMember> EnumerateMembersToSerialize(TypeInfo forType)
{
var paired = GetPairedType(forType, SERIALIZER_KIND);
if (paired == null)
{
return(Enumerable.Empty <SerializableMember>());
}
var colNamesField = paired.GetFieldNonNull("ColumnNames", PublicStatic);
var colNames = (ImmutableArray <string>)colNamesField.GetValueNonNull(null);
var ret = ImmutableArray.CreateBuilder <SerializableMember>(colNames.Length);
for (var i = 0; i < colNames.Length; i++)
{
var name = colNames[i];
var colWriterName = $"__Column_{i}";
var colWriterMtd = paired.GetMethodNonNull(colWriterName, PublicStatic);
#pragma warning disable CS0618 // This is obsolete to prevent clients from using them, but they are fine for us.
var emitsDefaultValue = colWriterMtd.GetCustomAttribute <DoesNotEmitDefaultValueAttribute>() == null;
#pragma warning restore CS0618
var shouldSerializeName = $"__Column_{i}_ShouldSerialize";
var shouldSerializeMtd = paired.GetMethod(shouldSerializeName, PublicStatic);
var shouldSerialize = (ShouldSerialize?)shouldSerializeMtd;
var getterName = $"__Column_{i}_Getter";
var getterMtd = paired.GetMethodNonNull(getterName, PublicStatic);
var getter = Getter.ForMethod(getterMtd);
var formatterName = $"__Column_{i}_Formatter";
var formatterMtd = paired.GetMethod(formatterName, PublicStatic);
Formatter formatter;
if (formatterMtd == null)
{
// if a method isn't provided, it must be using the default
formatter = Utils.NonNull(Formatter.GetDefault(getter.Returns));
}
else
{
formatter = Formatter.ForMethod(formatterMtd);
}
ret.Add(SerializableMember.ForGeneratedMethod(name, colWriterMtd, getter, formatter, shouldSerialize, emitsDefaultValue));
}
return(ret.ToImmutable());
}