public ReturnExpression(Mapper <TKey, TValue> mapper, Predicate <TKey> keyPredicate)
{
if (mapper == null)
{
throw new ArgumentNullException(nameof(mapper));
}
if (keyPredicate == null)
{
throw new ArgumentNullException(nameof(keyPredicate));
}
_mapper = mapper;
_keyPredicate = new KeyPredicate <TKey>(keyPredicate);
}
internal Mapper(Mapper <TKey, TValue> mapper, KeyPredicate <TKey> keyPredicate, ValueFunc <TValue> valueFunc)
{
if (mapper == null)
{
throw new ArgumentNullException(nameof(mapper));
}
if (keyPredicate == null)
{
throw new ArgumentNullException(nameof(keyPredicate));
}
if (valueFunc == null)
{
throw new ArgumentNullException(nameof(valueFunc));
}
KeyValues = new Dictionary <KeyPredicate <TKey>, ValueFunc <TValue> >(mapper.KeyValues);
KeyValues.Add(keyPredicate, valueFunc);
DefaultValue = mapper.DefaultValue;
}
internal ReturnExpression(Mapper <TKey, TValue> mapper, params TKey[] keys)
{
if (mapper == null)
{
throw new ArgumentNullException(nameof(mapper));
}
if (keys == null)
{
throw new ArgumentNullException(nameof(keys));
}
if (!keys.Any())
{
throw new ArgumentException("No key was passed.", nameof(keys));
}
_mapper = mapper;
CheckKeyDuplications(_mapper, keys);
_keyPredicate = new KeyPredicate <TKey>(keys);
}