> On 25 Jul 2017, at 18:45, Itai Ferber via swift-evolution > <[email protected]> wrote: > > Hi Morten, > > This is something we’ve considered adding and may do so in the future — > however, this will require additional API review and will not make it in time > for the Swift 4.0 release. > The usage of JSONSerialization as the serialization backend is a current > implementation detail, and may change in future releases; it would, for > instance, be more efficient to read/write JSON as we encode/decode, instead > of trying to collect the entire object graph before performing the next step. > As a side note, if this could be pushed even further to allow encoding/decoding to/from a Stream, it would allow me to use Codable on a project where I’m parsing JSON files in the hundreds of Mbs. I have no choice but to use a streaming parser. > We could also introduce something like a general > StructureEncoder/StructureDecoder which performs this conversion, as this > might be useful outside of just JSON. (For instance, > PropertyListEncoder/PropertyListDecoder currently do something similar.) > > So yes, this is under consideration for future API. :) > > — Itai > > On 25 Jul 2017, at 0:44, Morten Bek Ditlevsen via swift-evolution wrote: > > In the implementation og JSONEncoder and JSONDecoder we have the internal > functionality that encodes Codable types to a structure that is compatible > with JSONSerialization. > The JSONEncoder then calls JSONSerialization on this structure - and > JSONDecoder vice versa. > In some situations it could be nice to just encode or decode to or from > this structure - and not have the final encoding to Data performed. For > instance if you have some library that hands you a structure in this format > and you would like to perform decoding. > > Can anyone else see the relevance of exposing this functionality? It could > be exposed by wrapping _JSONEncoder in a public JSONStructureEncoder or > something similar. > > Sincerely, > /morten > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution > <https://lists.swift.org/mailman/listinfo/swift-evolution> > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution
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