public override bool TryRead(ref ReadOnlySpan <byte> remaining, out T result, PropertyMap propMap = null)
{
result = default;
switch (JsonReader.GetTokenType(ref remaining))
{
case JsonTokenType.StartObject:
break;
case JsonTokenType.Null:
remaining = remaining.Slice(4);
result = null;
return(true);
default:
return(false);
}
remaining = remaining.Slice(1);
result = _map.CreateUninitialized();;
if (JsonReader.GetTokenType(ref remaining) == JsonTokenType.EndObject)
{
remaining = remaining.Slice(1);
return(true);
}
uint dependencies = 0;
var deferred = new DeferredPropertyList <byte, byte>();
bool isFirst = true;
bool incomplete = true;
while (incomplete)
{
switch (JsonReader.GetTokenType(ref remaining))
{
case JsonTokenType.None:
return(false);
case JsonTokenType.EndObject:
remaining = remaining.Slice(1);
incomplete = false;
continue;
case JsonTokenType.ListSeparator:
if (isFirst)
{
return(false);
}
remaining = remaining.Slice(1);
break;
default:
if (!isFirst)
{
return(false);
}
isFirst = false;
break;
}
if (!JsonReader.TryReadUtf8String(ref remaining, out var key))
{
return(false);
}
if (JsonReader.GetTokenType(ref remaining) != JsonTokenType.KeyValueSeparator)
{
return(false);
}
remaining = remaining.Slice(1);
// Unknown Property
if (!_map.TryGetProperty(key, out var innerPropMap, out bool isIgnored))
{
if (!isIgnored)
{
_serializer.RaiseUnknownProperty(_map, key);
}
if (!JsonReader.Skip(ref remaining, out _))
{
return(false);
}
continue;
}
if (!innerPropMap.CanRead)
{
return(false);
}
// Property depends on another that hasn't been deserialized yet
if (!innerPropMap.HasReadConverter(result, dependencies))
{
if (!JsonReader.Skip(ref remaining, out var skipped))
{
return(false);
}
if (!deferred.Add(key, skipped))
{
return(false);
}
continue;
}
var restore = remaining;
if (!innerPropMap.TryRead(result, ref remaining, dependencies))
{
if (innerPropMap.IgnoreErrors)
{
remaining = restore;
if (!JsonReader.Skip(ref remaining, out var skipped))
{
return(false);
}
_serializer.RaiseFailedProperty(_map, innerPropMap);
continue;
}
else
{
return(false);
}
}
dependencies |= innerPropMap.IndexMask;
}
// Process all deferred properties
for (int i = 0; i < deferred.Count; i++)
{
if (!_map.TryGetProperty(deferred.GetKey(i), out var innerPropMap, out bool isIgnored))
{
return(false);
}
var value = deferred.GetValue(i);
if (!innerPropMap.TryRead(result, ref value, dependencies))
{
if (innerPropMap.IgnoreErrors)
{
_serializer.RaiseFailedProperty(_map, innerPropMap);
}
else
{
return(false);
}
}
}
return(true);
}
public override bool TryRead(ref ReadOnlySpan <byte> remaining, out T result, PropertyMap propMap = null)
{
if (EtfReader.TryReadNullSafe(ref remaining))
{
result = null;
return(true);
}
result = default;
switch (EtfReader.GetTokenType(ref remaining))
{
case EtfTokenType.Map:
if (remaining.Length < 5)
{
return(false);
}
remaining = remaining.Slice(1);
uint arity = BinaryPrimitives.ReadUInt32BigEndian(remaining); // count
remaining = remaining.Slice(4);
result = _map.CreateUninitialized();
if (arity == 0)
{
return(true);
}
uint dependencies = 0;
var deferred = new DeferredPropertyList <byte, byte>();
for (int i = 0; i < arity; i++)
{
if (!EtfReader.TryReadUtf8String(ref remaining, out var key))
{
return(false);
}
// Unknown Property
if (!_map.TryGetProperty(key, out var innerPropMap, out bool isIgnored))
{
if (!isIgnored)
{
_serializer.RaiseUnknownProperty(_map, key);
}
if (!EtfReader.Skip(ref remaining, out _))
{
return(false);
}
continue;
}
if (!innerPropMap.CanRead)
{
return(false);
}
// Property depends on another that hasn't been deserialized yet
if (!innerPropMap.HasReadConverter(result, dependencies))
{
if (!EtfReader.Skip(ref remaining, out var skipped))
{
return(false);
}
if (!deferred.Add(key, skipped))
{
return(false);
}
continue;
}
var restore = remaining;
if (!innerPropMap.TryRead(result, ref remaining, dependencies))
{
if (innerPropMap.IgnoreErrors)
{
remaining = restore;
if (!EtfReader.Skip(ref remaining, out var skipped))
{
return(false);
}
_serializer.RaiseFailedProperty(_map, innerPropMap);
continue;
}
else
{
return(false);
}
}
dependencies |= innerPropMap.IndexMask;
}
// Process all deferred properties
for (int i = 0; i < deferred.Count; i++)
{
if (!_map.TryGetProperty(deferred.GetKey(i), out var innerPropMap, out _))
{
return(false);
}
var value = deferred.GetValue(i);
if (!innerPropMap.TryRead(result, ref value, dependencies))
{
if (innerPropMap.IgnoreErrors)
{
_serializer.RaiseFailedProperty(_map, innerPropMap);
}
else
{
return(false);
}
}
}
return(true);
default:
return(false);
}
}
