remove oldest deprecated code (#231)

Since Stardew Valley 1.2 breaks most mods anyway, this commits removes the oldest deprecations and fixes the issues that are easiest for mods to update. See documentation for details.

1 files changed, 51 insertions, 0 deletions

diff --git a/src/StardewModdingAPI/Framework/Serialisation/SemanticVersionConverter.cs b/src/StardewModdingAPI/Framework/Serialisation/SemanticVersionConverter.cs
new file mode 100644
index 00000000..52ec999e
--- /dev/null
+++ b/src/StardewModdingAPI/Framework/Serialisation/SemanticVersionConverter.cs
@@ -0,0 +1,51 @@
+using System;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace StardewModdingAPI.Framework.Serialisation
+{
+    /// <summary>Overrides how SMAPI reads and writes <see cref="ISemanticVersion"/>.</summary>
+    internal class SemanticVersionConverter : JsonConverter
+    {
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>Whether this converter can write JSON.</summary>
+        public override bool CanWrite => false;
+
+
+        /*********
+        ** 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 objectType == typeof(ISemanticVersion);
+        }
+
+        /// <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)
+        {
+            JObject obj = JObject.Load(reader);
+            int major = obj.Value<int>("MajorVersion");
+            int minor = obj.Value<int>("MinorVersion");
+            int patch = obj.Value<int>("PatchVersion");
+            string build = obj.Value<string>("Build");
+            return new SemanticVersion(major, minor, patch, build);
+        }
+
+        /// <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)
+        {
+            throw new InvalidOperationException("This converter does not write JSON.");
+        }
+    }
+}