private static IImmutableList<Symbol> AddSymbols(Type type, IImmutableList<Symbol> derivedTypeSymbols)
{
if (type == null)
return derivedTypeSymbols;
var symbolFields = type.GetFields(BindingFlags.Public | BindingFlags.Static)
.Where(field => SymbolType.IsAssignableFrom(field.FieldType));
var symbols = symbolFields.Select(field => (Symbol)field.GetValue(null));
return AddSymbols(type.BaseType, derivedTypeSymbols.AddRange(symbols));
}
public SorterStageImpl(int keyCount, IReadOnlyList <IKeyPair> keyPairs)
{
_keyCount = keyCount;
_keyPairs = _keyPairs.AddRange(keyPairs.OrderBy(kp => kp.Index));
}
public INonemptyList <T> AddRange(IEnumerable <T> items)
{
return(_list.AddRange(items)
.AsNonemptyList()
.Extract(() => throw new InvalidOperationException()));
}