public void Set(DotvvmProperty p, object?value)
{
if (values == null)
{
var d = new Dictionary <DotvvmProperty, object?>();
d[p] = value;
this.values = d;
}
else if (keys == null)
{
Debug.Assert(values is Dictionary <DotvvmProperty, object?>);
valuesAsDictionary[p] = value;
}
else
{
Debug.Assert(this.values is object[]);
Debug.Assert(this.keys is DotvvmProperty[]);
var keys = this.keysAsArray;
var values = this.valuesAsArray;
var slot = PropertyImmutableHashtable.FindSlot(keys, this.hashSeed, p);
if (slot >= 0 && Object.Equals(values[slot], value))
{
// no-op, we would be changing it to the same value
}
else
{
var d = new Dictionary <DotvvmProperty, object?>();
for (int i = 0; i < keys.Length; i++)
{
if (keys[i] != null)
{
d[keys[i] !] = values[i];
public void AssignBulk(DotvvmProperty[] keys, object[] values, int hashSeed)
{
// The explicit layout is quite likely to mess with array covariance, just make sure we don't encounter that
Debug.Assert(values.GetType() == typeof(object[]));
Debug.Assert(keys.GetType() == typeof(DotvvmProperty[]));
Debug.Assert(keys.Length == values.Length);
if (this.values == null || this.keys == keys)
{
this.valuesAsArray = values;
this.keysAsArray = keys;
this.hashSeed = hashSeed;
}
else
{
// we can just to check if all current properties are in the proposed set
// if they are not we will have to copy it
if (this.keys == null) // TODO: is this heuristic actually useful?
{
var ok = true;
foreach (var x in (Dictionary <DotvvmProperty, object>) this.values)
{
var e = PropertyImmutableHashtable.FindSlot(keys, hashSeed, x.Key);
if (e < 0 || !Object.Equals(values[e], x.Value))
{
ok = false;
}
}
if (ok)
{
this.values = values;
this.keys = keys;
this.hashSeed = hashSeed;
return;
}
}
for (int i = 0; i < keys.Length; i++)
{
if (keys[i] != null)
{
this.Set(keys[i], values[i]);
}
}
}
}
public bool TryGet(DotvvmProperty p, out object value)
{
value = null;
if (values == null)
{
return(false);
}
if (keys == null)
{
Debug.Assert(values is Dictionary <DotvvmProperty, object>);
return(valuesAsDictionary.TryGetValue(p, out value));
}
Debug.Assert(values is object[]);
Debug.Assert(keys is DotvvmProperty[]);
var index = PropertyImmutableHashtable.FindSlot(this.keysAsArray, this.hashSeed, p);
if (index != -1)
{
value = this.valuesAsArray[index & (this.keysAsArray.Length - 1)];
}
return(index != -1);
}