SerializationUtility.cs

using System;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Text;
using Newtonsoft.Json;

namespace CodeName.Serialization
{
 // Mostly copied from https://github.com/jilleJr/Newtonsoft.Json-for-Unity.Converters/blob/master/Packages/Newtonsoft.Json-for-Unity.Converters/UnityConverters/Helpers/JsonHelperExtensions.cs
 public static class SerializationUtility
 {
 public static JsonSerializationException CreateSerializationException(this JsonReader reader, string message, [AllowNull] Exception innerException = null)
 {
 var builder = CreateStringBuilderWithSpaceAfter(message);

 builder.AppendFormat(CultureInfo.InvariantCulture, "Path '{0}'", reader.Path);

 var lineInfo = reader as IJsonLineInfo;
 int lineNumber = default;
 int linePosition = default;

 if (lineInfo?.HasLineInfo() == true)
 {
 lineNumber = lineInfo.LineNumber;
 linePosition = lineInfo.LinePosition;
 builder.AppendFormat(CultureInfo.InvariantCulture, ", line {0}, position {1}", lineNumber, linePosition);
 }

 builder.Append('.');

 return new JsonSerializationException(builder.ToString(), reader.Path, lineNumber, linePosition, innerException);
 }

 public static JsonWriterException CreateWriterException(this JsonWriter writer, string message, [AllowNull] Exception innerException = null)
 {
 var builder = CreateStringBuilderWithSpaceAfter(message);

 builder.AppendFormat(CultureInfo.InvariantCulture, "Path '{0}'.", writer.Path);

 return new JsonWriterException(
 message: builder.ToString(), writer.Path, innerException);
 }

 private static StringBuilder CreateStringBuilderWithSpaceAfter(string message)
 {
 var builder = new StringBuilder(message);

 if (message.EndsWith("."))
 {
 builder.Append(' ');
 }
 else if (!message.EndsWith(". "))
 {
 builder.Append(". ");
 }

 return builder;
 }
 }
}