ElementData.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.Runtime.Serialization;
 
internal sealed class ElementData
{
    public string localName;
 
    public string ns;
 
    public string prefix;
 
    public int attributeCount;
 
    public AttributeData[] attributes;
 
    public IDataNode dataNode;
 
    public int childElementIndex;
 
    public void AddAttribute(string prefix, string ns, string name, string value)
    {
        GrowAttributesIfNeeded();
        AttributeData attributeData = attributes[attributeCount];
        if (attributeData == null)
        {
            attributeData = (attributes[attributeCount] = new AttributeData());
        }
        attributeData.prefix = prefix;
        attributeData.ns = ns;
        attributeData.localName = name;
        attributeData.value = value;
        attributeCount++;
    }
 
    [MemberNotNull("attributes")]
    private void GrowAttributesIfNeeded()
    {
        if (attributes == null)
        {
            attributes = new AttributeData[4];
        }
        else if (attributes.Length == attributeCount)
        {
            AttributeData[] destinationArray = new AttributeData[attributes.Length * 2];
            Array.Copy(attributes, destinationArray, attributes.Length);
            attributes = destinationArray;
        }
    }
}