Describe the bug
The serializer throws a Null Exception when serializing enums that have the EnumMember attribute without a Value being specified. Exception details:
| |
Name |
Value |
Type |
| |
Message |
Object reference not set to an instance of an object. |
string |
| |
StackTrace |
" at YamlDotNet.Core.Emitter.AnalyzeScalar(Scalar scalar)\r\n at YamlDotNet.Core.Emitter.AnalyzeEvent(ParsingEvent evt)\r\n at YamlDotNet.Core.Emitter.Emit(ParsingEvent event)\r\n at YamlDotNet.Serialization.EventEmitters.WriterEventEmitter.YamlDotNet.Serialization.IEventEmitter.Emit(MappingEndEventInfo eventInfo, IEmitter emitter)\r\n at YamlDotNet.Serialization.EventEmitters.ChainedEventEmitter.Emit(MappingEndEventInfo eventInfo, IEmitter emitter)\r\n at YamlDotNet.Serialization.ObjectGraphVisitors.EmittingObjectGraphVisitor.YamlDotNet.Serialization.IObjectGraphVisitor<YamlDotNet.Core.IEmitter>.VisitMappingEnd(IObjectDescriptor mapping, IEmitter context, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphVisitors.ChainedObjectGraphVisitor.VisitMappingEnd(IObjectDescriptor mapping, IEmitter context, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphVisitors.ChainedObjectGraphVisitor.VisitMappingEnd(IObjectDescriptor mapping, IEmitter context, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphVisitors.ChainedObjectGraphVisitor.VisitMappingEnd(IObjectDescriptor mapping, IEmitter context, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphVisitors.ChainedObjectGraphVisitor.VisitMappingEnd(IObjectDescriptor mapping, IEmitter context, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphTraversalStrategies.FullObjectGraphTraversalStrategy.TraverseProperties[TContext](IObjectDescriptor value, IObjectGraphVisitor1 visitor, TContext context, Stack1 path, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphTraversalStrategies.FullObjectGraphTraversalStrategy.TraverseObject[TContext](IPropertyDescriptor propertyDescriptor, IObjectDescriptor value, IObjectGraphVisitor1 visitor, TContext context, Stack1 path, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphTraversalStrategies.FullObjectGraphTraversalStrategy.Traverse[TContext](IPropertyDescriptor propertyDescriptor, Object name, IObjectDescriptor value, IObjectGraphVisitor1 visitor, TContext context, Stack1 path, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphTraversalStrategies.FullObjectGraphTraversalStrategy.YamlDotNet.Serialization.IObjectGraphTraversalStrategy.Traverse[TContext](IObjectDescriptor graph, IObjectGraphVisitor`1 visitor, TContext context, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.SerializerBuilder.ValueSerializer.SerializeValue(IEmitter emitter, Object value, Type type)\r\n at YamlDotNet.Serialization.Serializer.EmitDocument(IEmitter emitter, Object graph, Type type)\r\n at YamlDotNet.Serialization.Serializer.Serialize(IEmitter emitter, Object graph)\r\n at YamlDotNet.Serialization.Serializer.Serialize(TextWriter writer, Object graph)\r\n at YamlDotNet.Serialization.Serializer.Serialize(Object graph)\r\n at Program.$(String[] args) in C:\Users\...\ConsoleApp1\ConsoleApp1\Program.cs:line 10" |
string |
To Reproduce
The code below reproduces the issue:
using System.Runtime.Serialization;
using YamlDotNet.Serialization;
using YamlDotNet.Serialization.NamingConventions;
var serializer = new SerializerBuilder()
.WithNamingConvention(CamelCaseNamingConvention.Instance)
.Build();
var obj = new TestClass() { TestEnum = TestEnum.Value1 };
var yaml = serializer.Serialize(obj);
Console.WriteLine(yaml);
public enum TestEnum
{
[EnumMember]
Value1,
[EnumMember]
Value2
}
public class TestClass
{
public TestEnum TestEnum { get; set; }
}Basically, create any enum with the [EnumMember] attribute and try to serialize an object with that.
Describe the bug
The serializer throws a Null Exception when serializing enums that have the
EnumMemberattribute without aValuebeing specified. Exception details:1 visitor, TContext context, Stack1 path, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphTraversalStrategies.FullObjectGraphTraversalStrategy.TraverseObject[TContext](IPropertyDescriptor propertyDescriptor, IObjectDescriptor value, IObjectGraphVisitor1 visitor, TContext context, Stack1 path, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphTraversalStrategies.FullObjectGraphTraversalStrategy.Traverse[TContext](IPropertyDescriptor propertyDescriptor, Object name, IObjectDescriptor value, IObjectGraphVisitor1 visitor, TContext context, Stack1 path, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.ObjectGraphTraversalStrategies.FullObjectGraphTraversalStrategy.YamlDotNet.Serialization.IObjectGraphTraversalStrategy.Traverse[TContext](IObjectDescriptor graph, IObjectGraphVisitor`1 visitor, TContext context, ObjectSerializer serializer)\r\n at YamlDotNet.Serialization.SerializerBuilder.ValueSerializer.SerializeValue(IEmitter emitter, Object value, Type type)\r\n at YamlDotNet.Serialization.Serializer.EmitDocument(IEmitter emitter, Object graph, Type type)\r\n at YamlDotNet.Serialization.Serializer.Serialize(IEmitter emitter, Object graph)\r\n at YamlDotNet.Serialization.Serializer.Serialize(TextWriter writer, Object graph)\r\n at YamlDotNet.Serialization.Serializer.Serialize(Object graph)\r\n at Program.$(String[] args) in C:\Users\...\ConsoleApp1\ConsoleApp1\Program.cs:line 10"To Reproduce
The code below reproduces the issue:
Basically, create any enum with the
[EnumMember]attribute and try to serialize an object with that.