System.Xml.XmlWellFormedWriter.AddAttribute C# (CSharp) Méthode

        private void AddAttribute(string prefix, string localName, string namespaceName)
        {
            int top = _attrCount++;
            if (top == _attrStack.Length)
            {
                AttrName[] newStack = new AttrName[top * 2];
                Array.Copy(_attrStack, newStack, top);
                _attrStack = newStack;
            }
            _attrStack[top].Set(prefix, localName, namespaceName);

            if (_attrCount < MaxAttrDuplWalkCount)
            {
                // check for duplicates
                for (int i = 0; i < top; i++)
                {
                    if (_attrStack[i].IsDuplicate(prefix, localName, namespaceName))
                    {
                        throw DupAttrException(prefix, localName);
                    }
                }
            }
            else
            {
                // reached the threshold -> add all attributes to hash table
                if (_attrCount == MaxAttrDuplWalkCount)
                {
                    if (_attrHashTable == null)
                    {
                        _attrHashTable = new Dictionary<string, int>(_hasher);
                    }
                    Debug.Assert(_attrHashTable.Count == 0);
                    for (int i = 0; i < top; i++)
                    {
                        AddToAttrHashTable(i);
                    }
                }

                // add last attribute to hash table and check for duplicates
                AddToAttrHashTable(top);
                int prev = _attrStack[top].prev;
                while (prev > 0)
                {
                    // indexes are stored incremented by 1, 0 means no entry
                    prev--;
                    if (_attrStack[prev].IsDuplicate(prefix, localName, namespaceName))
                    {
                        throw DupAttrException(prefix, localName);
                    }
                    prev = _attrStack[prev].prev;
                }
            }
        }