77 lines
2.7 KiB
C#
77 lines
2.7 KiB
C#
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using System;
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namespace ProtoBuf
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{
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/// <summary>
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/// Additional information about a serialization operation
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/// </summary>
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public sealed class SerializationContext
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{
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private bool frozen;
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internal void Freeze() { frozen = true; }
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private void ThrowIfFrozen() { if (frozen) throw new InvalidOperationException("The serialization-context cannot be changed once it is in use"); }
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private object context;
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/// <summary>
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/// Gets or sets a user-defined object containing additional information about this serialization/deserialization operation.
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/// </summary>
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public object Context
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{
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get { return context; }
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set { if (context != value) { ThrowIfFrozen(); context = value; } }
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}
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private static readonly SerializationContext @default;
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static SerializationContext()
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{
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@default = new SerializationContext();
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@default.Freeze();
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}
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/// <summary>
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/// A default SerializationContext, with minimal information.
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/// </summary>
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internal static SerializationContext Default => @default;
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#if PLAT_BINARYFORMATTER
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#if !(COREFX || PROFILE259)
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private System.Runtime.Serialization.StreamingContextStates state = System.Runtime.Serialization.StreamingContextStates.Persistence;
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/// <summary>
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/// Gets or sets the source or destination of the transmitted data.
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/// </summary>
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public System.Runtime.Serialization.StreamingContextStates State
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{
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get { return state; }
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set { if (state != value) { ThrowIfFrozen(); state = value; } }
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}
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#endif
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/// <summary>
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/// Convert a SerializationContext to a StreamingContext
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/// </summary>
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public static implicit operator System.Runtime.Serialization.StreamingContext(SerializationContext ctx)
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{
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#if COREFX
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return new System.Runtime.Serialization.StreamingContext();
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#else
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if (ctx == null) return new System.Runtime.Serialization.StreamingContext(System.Runtime.Serialization.StreamingContextStates.Persistence);
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return new System.Runtime.Serialization.StreamingContext(ctx.state, ctx.context);
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#endif
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}
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/// <summary>
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/// Convert a StreamingContext to a SerializationContext
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/// </summary>
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public static implicit operator SerializationContext (System.Runtime.Serialization.StreamingContext ctx)
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{
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SerializationContext result = new SerializationContext();
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#if !(COREFX || PROFILE259)
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result.Context = ctx.Context;
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result.State = ctx.State;
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#endif
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return result;
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}
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#endif
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}
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}
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