add support for writing versions to JSON

1 files changed, 55 insertions, 5 deletions

diff --git a/src/StardewModdingAPI.Toolkit/Serialisation/Converters/SemanticVersionConverter.cs b/src/StardewModdingAPI.Toolkit/Serialisation/Converters/SemanticVersionConverter.cs
index 4f0949fa..9b2f5e7d 100644
--- a/src/StardewModdingAPI.Toolkit/Serialisation/Converters/SemanticVersionConverter.cs
+++ b/src/StardewModdingAPI.Toolkit/Serialisation/Converters/SemanticVersionConverter.cs
@@ -1,17 +1,67 @@
+using System;
+using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 
 namespace StardewModdingAPI.Toolkit.Serialisation.Converters
 {
     /// <summary>Handles deserialisation of <see cref="ISemanticVersion"/>.</summary>
-    internal class SemanticVersionConverter : SimpleReadOnlyConverter<ISemanticVersion>
+    internal class SemanticVersionConverter : JsonConverter
     {
         /*********
-        ** Protected methods
+        ** Accessors
+        *********/
+        /// <summary>Get whether this converter can read JSON.</summary>
+        public override bool CanRead => true;
+
+        /// <summary>Get whether this converter can write JSON.</summary>
+        public override bool CanWrite => true;
+
+
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Get whether this instance can convert the specified object type.</summary>
+        /// <param name="objectType">The object type.</param>
+        public override bool CanConvert(Type objectType)
+        {
+            return typeof(ISemanticVersion).IsAssignableFrom(objectType);
+        }
+
+        /// <summary>Reads the JSON representation of the object.</summary>
+        /// <param name="reader">The JSON reader.</param>
+        /// <param name="objectType">The object type.</param>
+        /// <param name="existingValue">The object being read.</param>
+        /// <param name="serializer">The calling serializer.</param>
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            string path = reader.Path;
+            switch (reader.TokenType)
+            {
+                case JsonToken.StartObject:
+                    return this.ReadObject(JObject.Load(reader));
+                case JsonToken.String:
+                    return this.ReadString(JToken.Load(reader).Value<string>(), path);
+                default:
+                    throw new SParseException($"Can't parse {nameof(ISemanticVersion)} from {reader.TokenType} node (path: {reader.Path}).");
+            }
+        }
+
+        /// <summary>Writes the JSON representation of the object.</summary>
+        /// <param name="writer">The JSON writer.</param>
+        /// <param name="value">The value.</param>
+        /// <param name="serializer">The calling serializer.</param>
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            writer.WriteValue(value?.ToString());
+        }
+
+
+        /*********
+        ** Private methods
         *********/
         /// <summary>Read a JSON object.</summary>
         /// <param name="obj">The JSON object to read.</param>
-        /// <param name="path">The path to the current JSON node.</param>
-        protected override ISemanticVersion ReadObject(JObject obj, string path)
+        private ISemanticVersion ReadObject(JObject obj)
         {
             int major = obj.ValueIgnoreCase<int>("MajorVersion");
             int minor = obj.ValueIgnoreCase<int>("MinorVersion");
@@ -26,7 +76,7 @@ namespace StardewModdingAPI.Toolkit.Serialisation.Converters
         /// <summary>Read a JSON string.</summary>
         /// <param name="str">The JSON string value.</param>
         /// <param name="path">The path to the current JSON node.</param>
-        protected override ISemanticVersion ReadString(string str, string path)
+        private ISemanticVersion ReadString(string str, string path)
         {
             if (string.IsNullOrWhiteSpace(str))
                 return null;