/// <summary>
/// Gets the <see cref="RadioTapField" /> with the specified type, or null if the
/// field is not in the packet.
/// </summary>
/// <param name='type'>
/// Radio Tap field type
/// </param>
public RadioTapField this[RadioTapType type]
{
get
{
RadioTapFields.TryGetValue(type, out var field);
return(field);
}
}
/// <summary>
/// Removes a field of the specified type if one is present in the packet.
/// </summary>
/// <param name='fieldType'>
/// Field type.
/// </param>
public void Remove(RadioTapType fieldType)
{
RadioTapField field;
if (RadioTapFields.TryGetValue(fieldType, out field))
{
RadioTapFields.Remove(fieldType);
Length -= field.Length;
var presenceBit = (int)field.FieldType;
var presenceField = (presenceBit / 32);
Present[presenceField] &= (UInt32) ~(1 << presenceBit);
}
}
/// <summary>
/// Checks for the presence of a field of the specified type in the packet.
/// </summary>
/// <param name='fieldType'>
/// The field type to check for.
/// </param>
/// <returns><c>true</c> if the packet contains a field of the specified type; otherwise, <c>false</c>.</returns>
public bool Contains(RadioTapType fieldType)
{
return(RadioTapFields.ContainsKey(fieldType));
}