/// <summary>
/// Attempts to add the <paramref name="value"/> with the keys
/// <paramref name="key1"/>, <paramref name="key2"/>.
/// </summary>
/// <param name="key1">The <typeparamref name="TKey1"/> which
/// is the first key of the <paramref name="value"/>
/// to add to the <see cref="MultikeyedDictionary{TKey1, TKey2, TValue}"/>.</param>
/// <param name="key2">The <typeparamref name="TKey2"/> which
/// is the second key of the <paramref name="value"/>
/// to add to the <see cref="MultikeyedDictionary{TKey1, TKey2, TValue}"/>.</param>
/// <param name="value">The <typeparamref name="TValue"/> to add to the <see cref="MultikeyedDictionary{TKey1, TKey2, TValue}"/></param>
public bool TryAdd(TKey1 key1, TKey2 key2, TValue value)
{
// Declare the locals relative to the different levels.
LevelOne levelOne;
/* ------------------------------------------------------\
| Check each level individually, if the key set is |
| already present, indicate that nothing was done, and |
| yield; otherwise note that it was inserted. |
\------------------------------------------------------ */
if (((object)(key1)) == null)
{
throw new ArgumentNullException("key1");
}
bool topLevelLock = false;
Monitor.Enter(this.dataCopy, ref topLevelLock);
if (this.dataCopy.TryGetValue(key1, out levelOne))
{
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
if (((object)(key2)) == null)
{
throw new ArgumentNullException("key2");
}
bool levelOneLock = false;
Monitor.Enter(levelOne, ref levelOneLock);
if (levelOne.ContainsKey(key2))
{
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
return(false);
}
else
{
levelOne.Add(key2, value);
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
}
}
else
{
this.dataCopy.Add(key1, (levelOne = new LevelOne()));
levelOne.Add(key2, value);
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
}
return(true);
}
/// <summary>
/// Adds the <paramref name="value"/> with the keys
/// <paramref name="key1"/>, <paramref name="key2"/>.
/// </summary>
/// <param name="key1">The <typeparamref name="TKey1"/> which
/// is the first key of the <paramref name="value"/>
/// to add to the <see cref="MultikeyedDictionary{TKey1, TKey2, TValue}"/>.</param>
/// <param name="key2">The <typeparamref name="TKey2"/> which
/// is the second key of the <paramref name="value"/>
/// to add to the <see cref="MultikeyedDictionary{TKey1, TKey2, TValue}"/>.</param>
/// <param name="value">The <typeparamref name="TValue"/> to add to the <see cref="MultikeyedDictionary{TKey1, TKey2, TValue}"/>.</param>
public void Add(TKey1 key1, TKey2 key2, TValue value)
{
// Declare the locals relative to the different levels.
LevelOne levelOne;
/* ------------------------------------------------------\
| Check each level individually, if the key set is |
| already present, throw an the appropriate exception. |
\------------------------------------------------------ */
if (((object)(key1)) == null)
{
throw new ArgumentNullException("key1");
}
bool topLevelLock = false;
Monitor.Enter(this.dataCopy, ref topLevelLock);
if (this.dataCopy.TryGetValue(key1, out levelOne))
{
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
if (((object)(key2)) == null)
{
throw new ArgumentNullException("key2");
}
bool levelOneLock = false;
Monitor.Enter(levelOne, ref levelOneLock);
if (levelOne.ContainsKey(key2))
{
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
throw new InvalidOperationException();
}
else
{
levelOne.Add(key2, value);
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
}
}
else
{
this.dataCopy.Add(key1, (levelOne = new LevelOne()));
levelOne.Add(key2, value);
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
}
}
/// <summary>
/// Returns/sets the value with the <paramref name="key1"/>, <paramref name="key2"/>, <paramref name="key3"/>, <paramref name="key4"/> provided.
/// </summary>
/// <param name="key1">The <typeparamref name="TKey1"/> which
/// is the first key of the element to set/retrieve.</param>
/// <param name="key2">The <typeparamref name="TKey2"/> which
/// is the second key of the element to set/retrieve.</param>
/// <param name="key3">The <typeparamref name="TKey3"/> which
/// is the third key of the element to set/retrieve.</param>
/// <param name="key4">The <typeparamref name="TKey4"/> which
/// is the fourth key of the element to set/retrieve.</param>
public TValue this[TKey1 key1, TKey2 key2, TKey3 key3, TKey4 key4]
{
get
{
LevelOne levelOne;
LevelTwo levelTwo;
LevelThree levelThree;
if (((object)(key1)) == null)
{
throw new ArgumentNullException("key1");
}
bool topLevelLock = false;
Monitor.Enter(this.dataCopy, ref topLevelLock);
if (this.dataCopy.TryGetValue(key1, out levelOne))
{
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
if (((object)(key2)) == null)
{
throw new ArgumentNullException("key2");
}
bool levelOneLock = false;
Monitor.Enter(levelOne, ref levelOneLock);
if (levelOne.TryGetValue(key2, out levelTwo))
{
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
if (((object)(key3)) == null)
{
throw new ArgumentNullException("key3");
}
bool levelTwoLock = false;
Monitor.Enter(levelTwo, ref levelTwoLock);
if (levelTwo.TryGetValue(key3, out levelThree))
{
TValue value;
if (levelTwoLock)
{
Monitor.Exit(levelTwo);
}
if (((object)(key4)) == null)
{
throw new ArgumentNullException("key4");
}
bool levelThreeLock = false;
Monitor.Enter(levelThree, ref levelThreeLock);
if (levelThree.TryGetValue(key4, out value))
{
if (levelThreeLock)
{
Monitor.Exit(levelThree);
}
return(value);
}
else
{
if (levelThreeLock)
{
Monitor.Exit(levelThree);
}
throw new SubKeyNotFoundException("key4");
}
}
else
{
if (levelTwoLock)
{
Monitor.Exit(levelTwo);
}
throw new SubKeyNotFoundException("key3");
}
}
else
{
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
throw new SubKeyNotFoundException("key2");
}
}
else
{
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
throw new SubKeyNotFoundException("key1");
}
}
set
{
LevelOne levelOne;
LevelTwo levelTwo;
LevelThree levelThree;
if (((object)(key1)) == null)
{
throw new ArgumentNullException("key1");
}
bool topLevelLock = false;
Monitor.Enter(this.dataCopy, ref topLevelLock);
if (this.dataCopy.TryGetValue(key1, out levelOne))
{
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
if (((object)(key2)) == null)
{
throw new ArgumentNullException("key2");
}
bool levelOneLock = false;
Monitor.Enter(levelOne, ref levelOneLock);
if (levelOne.TryGetValue(key2, out levelTwo))
{
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
if (((object)(key3)) == null)
{
throw new ArgumentNullException("key3");
}
bool levelTwoLock = false;
Monitor.Enter(levelTwo, ref levelTwoLock);
if (levelTwo.TryGetValue(key3, out levelThree))
{
if (levelTwoLock)
{
Monitor.Exit(levelTwo);
}
if (((object)(key4)) == null)
{
throw new ArgumentNullException("key4");
}
bool levelThreeLock = false;
Monitor.Enter(levelThree, ref levelThreeLock);
if (levelThree.ContainsKey(key4))
{
if (levelThreeLock)
{
Monitor.Exit(levelThree);
}
levelThree[key4] = value;
}
else
{
levelThree.Add(key4, value);
if (levelThreeLock)
{
Monitor.Exit(levelThree);
}
}
}
else
{
levelTwo.Add(key3, (levelThree = new LevelThree()));
levelThree.Add(key4, value);
if (levelTwoLock)
{
Monitor.Exit(levelTwo);
}
}
}
else
{
levelOne.Add(key2, (levelTwo = new LevelTwo()));
levelTwo.Add(key3, (levelThree = new LevelThree()));
levelThree.Add(key4, value);
if (levelOneLock)
{
Monitor.Exit(levelOne);
}
}
}
else
{
this.dataCopy.Add(key1, (levelOne = new LevelOne()));
levelOne.Add(key2, (levelTwo = new LevelTwo()));
levelTwo.Add(key3, (levelThree = new LevelThree()));
levelThree.Add(key4, value);
if (topLevelLock)
{
Monitor.Exit(this.dataCopy);
}
}
}
}