712 lines
30 KiB
C#
712 lines
30 KiB
C#
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using System;
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using System.Reflection;
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namespace ProtoBuf
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{
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internal enum TimeSpanScale
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{
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Days = 0,
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Hours = 1,
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Minutes = 2,
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Seconds = 3,
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Milliseconds = 4,
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Ticks = 5,
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MinMax = 15
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}
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/// <summary>
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/// Provides support for common .NET types that do not have a direct representation
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/// in protobuf, using the definitions from bcl.proto
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/// </summary>
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public static class BclHelpers
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{
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/// <summary>
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/// Creates a new instance of the specified type, bypassing the constructor.
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/// </summary>
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/// <param name="type">The type to create</param>
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/// <returns>The new instance</returns>
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/// <exception cref="NotSupportedException">If the platform does not support constructor-skipping</exception>
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public static object GetUninitializedObject(Type type)
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{
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#if COREFX
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object obj = TryGetUninitializedObjectWithFormatterServices(type);
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if (obj != null) return obj;
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#endif
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#if PLAT_BINARYFORMATTER && !(COREFX || PROFILE259)
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return System.Runtime.Serialization.FormatterServices.GetUninitializedObject(type);
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#else
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throw new NotSupportedException("Constructor-skipping is not supported on this platform");
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#endif
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}
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#if COREFX // this is inspired by DCS: https://github.com/dotnet/corefx/blob/c02d33b18398199f6acc17d375dab154e9a1df66/src/System.Private.DataContractSerialization/src/System/Runtime/Serialization/XmlFormatReaderGenerator.cs#L854-L894
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static Func<Type, object> getUninitializedObject;
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static internal object TryGetUninitializedObjectWithFormatterServices(Type type)
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{
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if (getUninitializedObject == null)
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{
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try {
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var formatterServiceType = typeof(string).GetTypeInfo().Assembly.GetType("System.Runtime.Serialization.FormatterServices");
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if (formatterServiceType == null)
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{
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// fallback for .Net Core 3.0
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var formatterAssembly = Assembly.Load(new AssemblyName("System.Runtime.Serialization.Formatters"));
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formatterServiceType = formatterAssembly.GetType("System.Runtime.Serialization.FormatterServices");
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}
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MethodInfo method = formatterServiceType?.GetMethod("GetUninitializedObject", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static);
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if (method != null)
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{
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getUninitializedObject = (Func<Type, object>)method.CreateDelegate(typeof(Func<Type, object>));
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}
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}
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catch { /* best efforts only */ }
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if(getUninitializedObject == null) getUninitializedObject = x => null;
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}
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return getUninitializedObject(type);
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}
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#endif
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const int FieldTimeSpanValue = 0x01, FieldTimeSpanScale = 0x02, FieldTimeSpanKind = 0x03;
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internal static readonly DateTime[] EpochOrigin = {
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new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
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new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc),
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new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Local)
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};
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/// <summary>
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/// The default value for dates that are following google.protobuf.Timestamp semantics
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/// </summary>
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private static readonly DateTime TimestampEpoch = EpochOrigin[(int)DateTimeKind.Utc];
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/// <summary>
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/// Writes a TimeSpan to a protobuf stream using protobuf-net's own representation, bcl.TimeSpan
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/// </summary>
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public static void WriteTimeSpan(TimeSpan timeSpan, ProtoWriter dest)
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{
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WriteTimeSpanImpl(timeSpan, dest, DateTimeKind.Unspecified);
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}
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private static void WriteTimeSpanImpl(TimeSpan timeSpan, ProtoWriter dest, DateTimeKind kind)
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{
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if (dest == null) throw new ArgumentNullException(nameof(dest));
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long value;
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switch (dest.WireType)
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{
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case WireType.String:
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case WireType.StartGroup:
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TimeSpanScale scale;
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value = timeSpan.Ticks;
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if (timeSpan == TimeSpan.MaxValue)
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{
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value = 1;
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scale = TimeSpanScale.MinMax;
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}
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else if (timeSpan == TimeSpan.MinValue)
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{
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value = -1;
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scale = TimeSpanScale.MinMax;
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}
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else if (value % TimeSpan.TicksPerDay == 0)
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{
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scale = TimeSpanScale.Days;
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value /= TimeSpan.TicksPerDay;
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}
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else if (value % TimeSpan.TicksPerHour == 0)
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{
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scale = TimeSpanScale.Hours;
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value /= TimeSpan.TicksPerHour;
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}
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else if (value % TimeSpan.TicksPerMinute == 0)
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{
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scale = TimeSpanScale.Minutes;
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value /= TimeSpan.TicksPerMinute;
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}
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else if (value % TimeSpan.TicksPerSecond == 0)
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{
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scale = TimeSpanScale.Seconds;
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value /= TimeSpan.TicksPerSecond;
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}
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else if (value % TimeSpan.TicksPerMillisecond == 0)
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{
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scale = TimeSpanScale.Milliseconds;
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value /= TimeSpan.TicksPerMillisecond;
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}
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else
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{
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scale = TimeSpanScale.Ticks;
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}
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SubItemToken token = ProtoWriter.StartSubItem(null, dest);
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if (value != 0)
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{
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ProtoWriter.WriteFieldHeader(FieldTimeSpanValue, WireType.SignedVariant, dest);
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ProtoWriter.WriteInt64(value, dest);
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}
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if (scale != TimeSpanScale.Days)
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{
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ProtoWriter.WriteFieldHeader(FieldTimeSpanScale, WireType.Variant, dest);
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ProtoWriter.WriteInt32((int)scale, dest);
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}
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if (kind != DateTimeKind.Unspecified)
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{
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ProtoWriter.WriteFieldHeader(FieldTimeSpanKind, WireType.Variant, dest);
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ProtoWriter.WriteInt32((int)kind, dest);
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}
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ProtoWriter.EndSubItem(token, dest);
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break;
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case WireType.Fixed64:
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ProtoWriter.WriteInt64(timeSpan.Ticks, dest);
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break;
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default:
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throw new ProtoException("Unexpected wire-type: " + dest.WireType.ToString());
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}
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}
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/// <summary>
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/// Parses a TimeSpan from a protobuf stream using protobuf-net's own representation, bcl.TimeSpan
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/// </summary>
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public static TimeSpan ReadTimeSpan(ProtoReader source)
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{
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long ticks = ReadTimeSpanTicks(source, out DateTimeKind kind);
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if (ticks == long.MinValue) return TimeSpan.MinValue;
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if (ticks == long.MaxValue) return TimeSpan.MaxValue;
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return TimeSpan.FromTicks(ticks);
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}
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/// <summary>
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/// Parses a TimeSpan from a protobuf stream using the standardized format, google.protobuf.Duration
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/// </summary>
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public static TimeSpan ReadDuration(ProtoReader source)
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{
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long seconds = 0;
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int nanos = 0;
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SubItemToken token = ProtoReader.StartSubItem(source);
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int fieldNumber;
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while ((fieldNumber = source.ReadFieldHeader()) > 0)
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{
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switch (fieldNumber)
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{
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case 1:
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seconds = source.ReadInt64();
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break;
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case 2:
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nanos = source.ReadInt32();
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break;
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default:
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source.SkipField();
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break;
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}
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}
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ProtoReader.EndSubItem(token, source);
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return FromDurationSeconds(seconds, nanos);
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}
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/// <summary>
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/// Writes a TimeSpan to a protobuf stream using the standardized format, google.protobuf.Duration
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/// </summary>
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public static void WriteDuration(TimeSpan value, ProtoWriter dest)
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{
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var seconds = ToDurationSeconds(value, out int nanos);
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WriteSecondsNanos(seconds, nanos, dest);
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}
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private static void WriteSecondsNanos(long seconds, int nanos, ProtoWriter dest)
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{
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SubItemToken token = ProtoWriter.StartSubItem(null, dest);
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if (seconds != 0)
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{
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ProtoWriter.WriteFieldHeader(1, WireType.Variant, dest);
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ProtoWriter.WriteInt64(seconds, dest);
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}
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if (nanos != 0)
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{
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ProtoWriter.WriteFieldHeader(2, WireType.Variant, dest);
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ProtoWriter.WriteInt32(nanos, dest);
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}
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ProtoWriter.EndSubItem(token, dest);
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}
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/// <summary>
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/// Parses a DateTime from a protobuf stream using the standardized format, google.protobuf.Timestamp
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/// </summary>
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public static DateTime ReadTimestamp(ProtoReader source)
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{
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// note: DateTime is only defined for just over 0000 to just below 10000;
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// TimeSpan has a range of +/- 10,675,199 days === 29k years;
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// so we can just use epoch time delta
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return TimestampEpoch + ReadDuration(source);
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}
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/// <summary>
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/// Writes a DateTime to a protobuf stream using the standardized format, google.protobuf.Timestamp
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/// </summary>
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public static void WriteTimestamp(DateTime value, ProtoWriter dest)
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{
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var seconds = ToDurationSeconds(value - TimestampEpoch, out int nanos);
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if (nanos < 0)
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{ // from Timestamp.proto:
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// "Negative second values with fractions must still have
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// non -negative nanos values that count forward in time."
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seconds--;
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nanos += 1000000000;
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}
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WriteSecondsNanos(seconds, nanos, dest);
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}
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static TimeSpan FromDurationSeconds(long seconds, int nanos)
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{
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long ticks = checked((seconds * TimeSpan.TicksPerSecond)
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+ (nanos * TimeSpan.TicksPerMillisecond) / 1000000);
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return TimeSpan.FromTicks(ticks);
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}
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static long ToDurationSeconds(TimeSpan value, out int nanos)
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{
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nanos = (int)(((value.Ticks % TimeSpan.TicksPerSecond) * 1000000)
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/ TimeSpan.TicksPerMillisecond);
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return value.Ticks / TimeSpan.TicksPerSecond;
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}
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/// <summary>
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/// Parses a DateTime from a protobuf stream
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/// </summary>
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public static DateTime ReadDateTime(ProtoReader source)
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{
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long ticks = ReadTimeSpanTicks(source, out DateTimeKind kind);
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if (ticks == long.MinValue) return DateTime.MinValue;
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if (ticks == long.MaxValue) return DateTime.MaxValue;
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return EpochOrigin[(int)kind].AddTicks(ticks);
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}
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/// <summary>
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/// Writes a DateTime to a protobuf stream, excluding the <c>Kind</c>
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/// </summary>
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public static void WriteDateTime(DateTime value, ProtoWriter dest)
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{
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WriteDateTimeImpl(value, dest, false);
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}
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/// <summary>
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/// Writes a DateTime to a protobuf stream, including the <c>Kind</c>
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/// </summary>
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public static void WriteDateTimeWithKind(DateTime value, ProtoWriter dest)
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{
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WriteDateTimeImpl(value, dest, true);
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}
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private static void WriteDateTimeImpl(DateTime value, ProtoWriter dest, bool includeKind)
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{
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if (dest == null) throw new ArgumentNullException(nameof(dest));
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TimeSpan delta;
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switch (dest.WireType)
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{
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case WireType.StartGroup:
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case WireType.String:
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if (value == DateTime.MaxValue)
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{
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delta = TimeSpan.MaxValue;
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includeKind = false;
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}
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else if (value == DateTime.MinValue)
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{
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delta = TimeSpan.MinValue;
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includeKind = false;
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}
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else
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{
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delta = value - EpochOrigin[0];
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}
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break;
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default:
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delta = value - EpochOrigin[0];
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break;
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}
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WriteTimeSpanImpl(delta, dest, includeKind ? value.Kind : DateTimeKind.Unspecified);
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}
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private static long ReadTimeSpanTicks(ProtoReader source, out DateTimeKind kind)
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{
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kind = DateTimeKind.Unspecified;
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switch (source.WireType)
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{
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case WireType.String:
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case WireType.StartGroup:
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SubItemToken token = ProtoReader.StartSubItem(source);
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int fieldNumber;
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TimeSpanScale scale = TimeSpanScale.Days;
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long value = 0;
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while ((fieldNumber = source.ReadFieldHeader()) > 0)
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{
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switch (fieldNumber)
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{
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case FieldTimeSpanScale:
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scale = (TimeSpanScale)source.ReadInt32();
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break;
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case FieldTimeSpanValue:
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source.Assert(WireType.SignedVariant);
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value = source.ReadInt64();
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break;
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case FieldTimeSpanKind:
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kind = (DateTimeKind)source.ReadInt32();
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switch (kind)
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{
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case DateTimeKind.Unspecified:
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case DateTimeKind.Utc:
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case DateTimeKind.Local:
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break; // fine
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default:
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throw new ProtoException("Invalid date/time kind: " + kind.ToString());
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}
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break;
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|
|
default:
|
|||
|
|
source.SkipField();
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
ProtoReader.EndSubItem(token, source);
|
|||
|
|
switch (scale)
|
|||
|
|
{
|
|||
|
|
case TimeSpanScale.Days:
|
|||
|
|
return value * TimeSpan.TicksPerDay;
|
|||
|
|
case TimeSpanScale.Hours:
|
|||
|
|
return value * TimeSpan.TicksPerHour;
|
|||
|
|
case TimeSpanScale.Minutes:
|
|||
|
|
return value * TimeSpan.TicksPerMinute;
|
|||
|
|
case TimeSpanScale.Seconds:
|
|||
|
|
return value * TimeSpan.TicksPerSecond;
|
|||
|
|
case TimeSpanScale.Milliseconds:
|
|||
|
|
return value * TimeSpan.TicksPerMillisecond;
|
|||
|
|
case TimeSpanScale.Ticks:
|
|||
|
|
return value;
|
|||
|
|
case TimeSpanScale.MinMax:
|
|||
|
|
switch (value)
|
|||
|
|
{
|
|||
|
|
case 1: return long.MaxValue;
|
|||
|
|
case -1: return long.MinValue;
|
|||
|
|
default: throw new ProtoException("Unknown min/max value: " + value.ToString());
|
|||
|
|
}
|
|||
|
|
default:
|
|||
|
|
throw new ProtoException("Unknown timescale: " + scale.ToString());
|
|||
|
|
}
|
|||
|
|
case WireType.Fixed64:
|
|||
|
|
return source.ReadInt64();
|
|||
|
|
default:
|
|||
|
|
throw new ProtoException("Unexpected wire-type: " + source.WireType.ToString());
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
const int FieldDecimalLow = 0x01, FieldDecimalHigh = 0x02, FieldDecimalSignScale = 0x03;
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Parses a decimal from a protobuf stream
|
|||
|
|
/// </summary>
|
|||
|
|
public static decimal ReadDecimal(ProtoReader reader)
|
|||
|
|
{
|
|||
|
|
ulong low = 0;
|
|||
|
|
uint high = 0;
|
|||
|
|
uint signScale = 0;
|
|||
|
|
|
|||
|
|
int fieldNumber;
|
|||
|
|
SubItemToken token = ProtoReader.StartSubItem(reader);
|
|||
|
|
while ((fieldNumber = reader.ReadFieldHeader()) > 0)
|
|||
|
|
{
|
|||
|
|
switch (fieldNumber)
|
|||
|
|
{
|
|||
|
|
case FieldDecimalLow: low = reader.ReadUInt64(); break;
|
|||
|
|
case FieldDecimalHigh: high = reader.ReadUInt32(); break;
|
|||
|
|
case FieldDecimalSignScale: signScale = reader.ReadUInt32(); break;
|
|||
|
|
default: reader.SkipField(); break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
ProtoReader.EndSubItem(token, reader);
|
|||
|
|
|
|||
|
|
int lo = (int)(low & 0xFFFFFFFFL),
|
|||
|
|
mid = (int)((low >> 32) & 0xFFFFFFFFL),
|
|||
|
|
hi = (int)high;
|
|||
|
|
bool isNeg = (signScale & 0x0001) == 0x0001;
|
|||
|
|
byte scale = (byte)((signScale & 0x01FE) >> 1);
|
|||
|
|
return new decimal(lo, mid, hi, isNeg, scale);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Writes a decimal to a protobuf stream
|
|||
|
|
/// </summary>
|
|||
|
|
public static void WriteDecimal(decimal value, ProtoWriter writer)
|
|||
|
|
{
|
|||
|
|
int[] bits = decimal.GetBits(value);
|
|||
|
|
ulong a = ((ulong)bits[1]) << 32, b = ((ulong)bits[0]) & 0xFFFFFFFFL;
|
|||
|
|
ulong low = a | b;
|
|||
|
|
uint high = (uint)bits[2];
|
|||
|
|
uint signScale = (uint)(((bits[3] >> 15) & 0x01FE) | ((bits[3] >> 31) & 0x0001));
|
|||
|
|
|
|||
|
|
SubItemToken token = ProtoWriter.StartSubItem(null, writer);
|
|||
|
|
if (low != 0)
|
|||
|
|
{
|
|||
|
|
ProtoWriter.WriteFieldHeader(FieldDecimalLow, WireType.Variant, writer);
|
|||
|
|
ProtoWriter.WriteUInt64(low, writer);
|
|||
|
|
}
|
|||
|
|
if (high != 0)
|
|||
|
|
{
|
|||
|
|
ProtoWriter.WriteFieldHeader(FieldDecimalHigh, WireType.Variant, writer);
|
|||
|
|
ProtoWriter.WriteUInt32(high, writer);
|
|||
|
|
}
|
|||
|
|
if (signScale != 0)
|
|||
|
|
{
|
|||
|
|
ProtoWriter.WriteFieldHeader(FieldDecimalSignScale, WireType.Variant, writer);
|
|||
|
|
ProtoWriter.WriteUInt32(signScale, writer);
|
|||
|
|
}
|
|||
|
|
ProtoWriter.EndSubItem(token, writer);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
const int FieldGuidLow = 1, FieldGuidHigh = 2;
|
|||
|
|
/// <summary>
|
|||
|
|
/// Writes a Guid to a protobuf stream
|
|||
|
|
/// </summary>
|
|||
|
|
public static void WriteGuid(Guid value, ProtoWriter dest)
|
|||
|
|
{
|
|||
|
|
byte[] blob = value.ToByteArray();
|
|||
|
|
|
|||
|
|
SubItemToken token = ProtoWriter.StartSubItem(null, dest);
|
|||
|
|
if (value != Guid.Empty)
|
|||
|
|
{
|
|||
|
|
ProtoWriter.WriteFieldHeader(FieldGuidLow, WireType.Fixed64, dest);
|
|||
|
|
ProtoWriter.WriteBytes(blob, 0, 8, dest);
|
|||
|
|
ProtoWriter.WriteFieldHeader(FieldGuidHigh, WireType.Fixed64, dest);
|
|||
|
|
ProtoWriter.WriteBytes(blob, 8, 8, dest);
|
|||
|
|
}
|
|||
|
|
ProtoWriter.EndSubItem(token, dest);
|
|||
|
|
}
|
|||
|
|
/// <summary>
|
|||
|
|
/// Parses a Guid from a protobuf stream
|
|||
|
|
/// </summary>
|
|||
|
|
public static Guid ReadGuid(ProtoReader source)
|
|||
|
|
{
|
|||
|
|
ulong low = 0, high = 0;
|
|||
|
|
int fieldNumber;
|
|||
|
|
SubItemToken token = ProtoReader.StartSubItem(source);
|
|||
|
|
while ((fieldNumber = source.ReadFieldHeader()) > 0)
|
|||
|
|
{
|
|||
|
|
switch (fieldNumber)
|
|||
|
|
{
|
|||
|
|
case FieldGuidLow: low = source.ReadUInt64(); break;
|
|||
|
|
case FieldGuidHigh: high = source.ReadUInt64(); break;
|
|||
|
|
default: source.SkipField(); break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
ProtoReader.EndSubItem(token, source);
|
|||
|
|
if (low == 0 && high == 0) return Guid.Empty;
|
|||
|
|
uint a = (uint)(low >> 32), b = (uint)low, c = (uint)(high >> 32), d = (uint)high;
|
|||
|
|
return new Guid((int)b, (short)a, (short)(a >> 16),
|
|||
|
|
(byte)d, (byte)(d >> 8), (byte)(d >> 16), (byte)(d >> 24),
|
|||
|
|
(byte)c, (byte)(c >> 8), (byte)(c >> 16), (byte)(c >> 24));
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
private const int
|
|||
|
|
FieldExistingObjectKey = 1,
|
|||
|
|
FieldNewObjectKey = 2,
|
|||
|
|
FieldExistingTypeKey = 3,
|
|||
|
|
FieldNewTypeKey = 4,
|
|||
|
|
FieldTypeName = 8,
|
|||
|
|
FieldObject = 10;
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Optional behaviours that introduce .NET-specific functionality
|
|||
|
|
/// </summary>
|
|||
|
|
[Flags]
|
|||
|
|
public enum NetObjectOptions : byte
|
|||
|
|
{
|
|||
|
|
/// <summary>
|
|||
|
|
/// No special behaviour
|
|||
|
|
/// </summary>
|
|||
|
|
None = 0,
|
|||
|
|
/// <summary>
|
|||
|
|
/// Enables full object-tracking/full-graph support.
|
|||
|
|
/// </summary>
|
|||
|
|
AsReference = 1,
|
|||
|
|
/// <summary>
|
|||
|
|
/// Embeds the type information into the stream, allowing usage with types not known in advance.
|
|||
|
|
/// </summary>
|
|||
|
|
DynamicType = 2,
|
|||
|
|
/// <summary>
|
|||
|
|
/// If false, the constructor for the type is bypassed during deserialization, meaning any field initializers
|
|||
|
|
/// or other initialization code is skipped.
|
|||
|
|
/// </summary>
|
|||
|
|
UseConstructor = 4,
|
|||
|
|
/// <summary>
|
|||
|
|
/// Should the object index be reserved, rather than creating an object promptly
|
|||
|
|
/// </summary>
|
|||
|
|
LateSet = 8
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Reads an *implementation specific* bundled .NET object, including (as options) type-metadata, identity/re-use, etc.
|
|||
|
|
/// </summary>
|
|||
|
|
public static object ReadNetObject(object value, ProtoReader source, int key, Type type, NetObjectOptions options)
|
|||
|
|
{
|
|||
|
|
SubItemToken token = ProtoReader.StartSubItem(source);
|
|||
|
|
int fieldNumber;
|
|||
|
|
int newObjectKey = -1, newTypeKey = -1, tmp;
|
|||
|
|
while ((fieldNumber = source.ReadFieldHeader()) > 0)
|
|||
|
|
{
|
|||
|
|
switch (fieldNumber)
|
|||
|
|
{
|
|||
|
|
case FieldExistingObjectKey:
|
|||
|
|
tmp = source.ReadInt32();
|
|||
|
|
value = source.NetCache.GetKeyedObject(tmp);
|
|||
|
|
break;
|
|||
|
|
case FieldNewObjectKey:
|
|||
|
|
newObjectKey = source.ReadInt32();
|
|||
|
|
break;
|
|||
|
|
case FieldExistingTypeKey:
|
|||
|
|
tmp = source.ReadInt32();
|
|||
|
|
type = (Type)source.NetCache.GetKeyedObject(tmp);
|
|||
|
|
key = source.GetTypeKey(ref type);
|
|||
|
|
break;
|
|||
|
|
case FieldNewTypeKey:
|
|||
|
|
newTypeKey = source.ReadInt32();
|
|||
|
|
break;
|
|||
|
|
case FieldTypeName:
|
|||
|
|
string typeName = source.ReadString();
|
|||
|
|
type = source.DeserializeType(typeName);
|
|||
|
|
if (type == null)
|
|||
|
|
{
|
|||
|
|
throw new ProtoException("Unable to resolve type: " + typeName + " (you can use the TypeModel.DynamicTypeFormatting event to provide a custom mapping)");
|
|||
|
|
}
|
|||
|
|
if (type == typeof(string))
|
|||
|
|
{
|
|||
|
|
key = -1;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
key = source.GetTypeKey(ref type);
|
|||
|
|
if (key < 0)
|
|||
|
|
throw new InvalidOperationException("Dynamic type is not a contract-type: " + type.Name);
|
|||
|
|
}
|
|||
|
|
break;
|
|||
|
|
case FieldObject:
|
|||
|
|
bool isString = type == typeof(string);
|
|||
|
|
bool wasNull = value == null;
|
|||
|
|
bool lateSet = wasNull && (isString || ((options & NetObjectOptions.LateSet) != 0));
|
|||
|
|
|
|||
|
|
if (newObjectKey >= 0 && !lateSet)
|
|||
|
|
{
|
|||
|
|
if (value == null)
|
|||
|
|
{
|
|||
|
|
source.TrapNextObject(newObjectKey);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
source.NetCache.SetKeyedObject(newObjectKey, value);
|
|||
|
|
}
|
|||
|
|
if (newTypeKey >= 0) source.NetCache.SetKeyedObject(newTypeKey, type);
|
|||
|
|
}
|
|||
|
|
object oldValue = value;
|
|||
|
|
if (isString)
|
|||
|
|
{
|
|||
|
|
value = source.ReadString();
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
value = ProtoReader.ReadTypedObject(oldValue, key, source, type);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (newObjectKey >= 0)
|
|||
|
|
{
|
|||
|
|
if (wasNull && !lateSet)
|
|||
|
|
{ // this both ensures (via exception) that it *was* set, and makes sure we don't shout
|
|||
|
|
// about changed references
|
|||
|
|
oldValue = source.NetCache.GetKeyedObject(newObjectKey);
|
|||
|
|
}
|
|||
|
|
if (lateSet)
|
|||
|
|
{
|
|||
|
|
source.NetCache.SetKeyedObject(newObjectKey, value);
|
|||
|
|
if (newTypeKey >= 0) source.NetCache.SetKeyedObject(newTypeKey, type);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if (newObjectKey >= 0 && !lateSet && !ReferenceEquals(oldValue, value))
|
|||
|
|
{
|
|||
|
|
throw new ProtoException("A reference-tracked object changed reference during deserialization");
|
|||
|
|
}
|
|||
|
|
if (newObjectKey < 0 && newTypeKey >= 0)
|
|||
|
|
{ // have a new type, but not a new object
|
|||
|
|
source.NetCache.SetKeyedObject(newTypeKey, type);
|
|||
|
|
}
|
|||
|
|
break;
|
|||
|
|
default:
|
|||
|
|
source.SkipField();
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if (newObjectKey >= 0 && (options & NetObjectOptions.AsReference) == 0)
|
|||
|
|
{
|
|||
|
|
throw new ProtoException("Object key in input stream, but reference-tracking was not expected");
|
|||
|
|
}
|
|||
|
|
ProtoReader.EndSubItem(token, source);
|
|||
|
|
|
|||
|
|
return value;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Writes an *implementation specific* bundled .NET object, including (as options) type-metadata, identity/re-use, etc.
|
|||
|
|
/// </summary>
|
|||
|
|
public static void WriteNetObject(object value, ProtoWriter dest, int key, NetObjectOptions options)
|
|||
|
|
{
|
|||
|
|
if (dest == null) throw new ArgumentNullException("dest");
|
|||
|
|
bool dynamicType = (options & NetObjectOptions.DynamicType) != 0,
|
|||
|
|
asReference = (options & NetObjectOptions.AsReference) != 0;
|
|||
|
|
WireType wireType = dest.WireType;
|
|||
|
|
SubItemToken token = ProtoWriter.StartSubItem(null, dest);
|
|||
|
|
bool writeObject = true;
|
|||
|
|
if (asReference)
|
|||
|
|
{
|
|||
|
|
int objectKey = dest.NetCache.AddObjectKey(value, out bool existing);
|
|||
|
|
ProtoWriter.WriteFieldHeader(existing ? FieldExistingObjectKey : FieldNewObjectKey, WireType.Variant, dest);
|
|||
|
|
ProtoWriter.WriteInt32(objectKey, dest);
|
|||
|
|
if (existing)
|
|||
|
|
{
|
|||
|
|
writeObject = false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (writeObject)
|
|||
|
|
{
|
|||
|
|
if (dynamicType)
|
|||
|
|
{
|
|||
|
|
Type type = value.GetType();
|
|||
|
|
|
|||
|
|
if (!(value is string))
|
|||
|
|
{
|
|||
|
|
key = dest.GetTypeKey(ref type);
|
|||
|
|
if (key < 0) throw new InvalidOperationException("Dynamic type is not a contract-type: " + type.Name);
|
|||
|
|
}
|
|||
|
|
int typeKey = dest.NetCache.AddObjectKey(type, out bool existing);
|
|||
|
|
ProtoWriter.WriteFieldHeader(existing ? FieldExistingTypeKey : FieldNewTypeKey, WireType.Variant, dest);
|
|||
|
|
ProtoWriter.WriteInt32(typeKey, dest);
|
|||
|
|
if (!existing)
|
|||
|
|
{
|
|||
|
|
ProtoWriter.WriteFieldHeader(FieldTypeName, WireType.String, dest);
|
|||
|
|
ProtoWriter.WriteString(dest.SerializeType(type), dest);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
ProtoWriter.WriteFieldHeader(FieldObject, wireType, dest);
|
|||
|
|
if (value is string)
|
|||
|
|
{
|
|||
|
|
ProtoWriter.WriteString((string)value, dest);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
ProtoWriter.WriteObject(value, key, dest);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
ProtoWriter.EndSubItem(token, dest);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|