public TValue this[TKey key] {
get {
TValue res;
if (TryGetValue(key, out res))
{
return(res);
}
throw new KeyNotFoundException();
}
set {
IEqualityComparer <TKey> comparer = null;
if (_data == null || (comparer = _data as IEqualityComparer <TKey>) != null)
{
_data = new SingleDependency(key, value, comparer ?? EqualityComparer <TKey> .Default);
return;
}
var single = _data as SingleDependency;
if (single != null)
{
if (single.Comparer.Equals(single.Key, key))
{
single.Value = value;
return;
}
var data = new AnalysisDictionary <TKey, TValue>(single.Comparer);
data[single.Key] = single.Value;
data[key] = value;
_data = data;
return;
}
var dict = _data as AnalysisDictionary <TKey, TValue>;
if (dict == null)
{
_data = dict = new AnalysisDictionary <TKey, TValue>(comparer ?? EqualityComparer <TKey> .Default);
}
dict[key] = value;
}
}
internal AnalysisDictionaryEnumerator(AnalysisDictionary <TKey, TValue> dict)
{
_buckets = dict._buckets;
_curValue = default(KeyValuePair <TKey, TValue>);
_curBucket = 0;
}