/// <summary>
/// Reverse the dictionary encoding of a value.
/// If it cannot be decoded then return null, in this case the value must be an integer.
/// </summary>
/// <param name="value">Value to decode</param>
/// <param name="isIntLegal">Can an integer value be used here?</param>
/// <returns>Original value if it can be decoded.</returns>
public object Reverse(CBORObject value, bool isIntLegal)
{
if (value.IsTagged)
{
if (value.HasOneTag(DictionaryTag))
{
return(Reverse(value.UntagOne(), false));
}
if (CoralItem.IsLiteral(value))
{
return(value);
}
throw new ArgumentException("Value is not a literal value", nameof(value));
}
if (value.Type == CBORType.Integer && (isIntLegal || value.AsInt32() < 0))
{
return(value);
}
if (value.Type != CBORType.Integer)
{
if (value.Type == CBORType.Array || CoralItem.IsLiteral(value))
{
return(value);
}
throw new ArgumentException($"The value '{value}' is not a literal value", nameof(value));
}
if (!_dictionary.ContainsKey(value.AsInt32()))
{
return(null);
}
object o = _dictionary[value.AsInt32()];
CBORObject result;
if (o is Cori)
{
Cori cori = (Cori)o;
result = cori.Data;
}
else if (o is CBORObject)
{
result = (CBORObject)o;
}
else
{
result = CBORObject.FromObject(o);
}
return(result);
}
public CoralDictionary Add(int key, CBORObject value)
{
if (key < 0)
{
throw new ArgumentException("Key must be a non-negative value", nameof(key));
}
if (!CoralItem.IsLiteral(value))
{
throw new ArgumentException("Value must be a literal value");
}
if (value.Type == CBORType.TextString)
{
_dictionary.Add(key, value.AsString());
}
else
{
_dictionary.Add(key, value);
}
return(this);
}
public CoralBody Add(CoralItem item)
{
_items.Add(item);
return(this);
}