private static JObject ToJson(StackItem item, HashSet <StackItem> context)
{
JObject json = new();
json["type"] = item.Type;
switch (item)
{
case Array array:
context ??= new HashSet <StackItem>(ReferenceEqualityComparer.Instance);
if (!context.Add(array))
{
throw new InvalidOperationException();
}
json["value"] = new JArray(array.Select(p => ToJson(p, context)));
break;
case Boolean boolean:
json["value"] = boolean.GetBoolean();
break;
case Buffer _:
case ByteString _:
json["value"] = Convert.ToBase64String(item.GetSpan());
break;
case Integer integer:
json["value"] = integer.GetInteger().ToString();
break;
case Map map:
context ??= new HashSet <StackItem>(ReferenceEqualityComparer.Instance);
if (!context.Add(map))
{
throw new InvalidOperationException();
}
json["value"] = new JArray(map.Select(p =>
{
JObject item = new();
item["key"] = ToJson(p.Key, context);
item["value"] = ToJson(p.Value, context);
return(item);
}));
break;
case Pointer pointer:
json["value"] = pointer.Position;
break;
}
return(json);
}
public static string GetString(this StackItem item)
{
return(Encoding.UTF8.GetString(item.GetSpan()));
}
private static ContractParameter ToParameter(StackItem item, List<Tuple<StackItem, ContractParameter>> context)
{
ContractParameter parameter = null;
switch (item)
{
case VMArray array:
if (context is null)
context = new List<Tuple<StackItem, ContractParameter>>();
else
parameter = context.FirstOrDefault(p => ReferenceEquals(p.Item1, item))?.Item2;
if (parameter is null)
{
parameter = new ContractParameter { Type = ContractParameterType.Array };
context.Add(new Tuple<StackItem, ContractParameter>(item, parameter));
parameter.Value = array.Select(p => ToParameter(p, context)).ToList();
}
break;
case Map map:
if (context is null)
context = new List<Tuple<StackItem, ContractParameter>>();
else
parameter = context.FirstOrDefault(p => ReferenceEquals(p.Item1, item))?.Item2;
if (parameter is null)
{
parameter = new ContractParameter { Type = ContractParameterType.Map };
context.Add(new Tuple<StackItem, ContractParameter>(item, parameter));
parameter.Value = map.Select(p => new KeyValuePair<ContractParameter, ContractParameter>(ToParameter(p.Key, context), ToParameter(p.Value, context))).ToList();
}
break;
case VMBoolean _:
parameter = new ContractParameter
{
Type = ContractParameterType.Boolean,
Value = item.ToBoolean()
};
break;
case ByteArray _:
parameter = new ContractParameter
{
Type = ContractParameterType.ByteArray,
Value = item.GetSpan().ToArray()
};
break;
case Integer _:
parameter = new ContractParameter
{
Type = ContractParameterType.Integer,
Value = item.GetBigInteger()
};
break;
case InteropInterface _:
parameter = new ContractParameter
{
Type = ContractParameterType.InteropInterface
};
break;
default: // Null included
throw new ArgumentException();
}
return parameter;
}