1 files changed, 36 insertions, 0 deletions
diff --git a/src/SMAPI/Framework/Serialisation/SmapiConverters/SemanticVersionConverter.cs b/src/SMAPI/Framework/Serialisation/SmapiConverters/SemanticVersionConverter.cs
new file mode 100644
index 00000000..50181809
--- /dev/null
+++ b/src/SMAPI/Framework/Serialisation/SmapiConverters/SemanticVersionConverter.cs
@@ -0,0 +1,36 @@
+using Newtonsoft.Json.Linq;
+using StardewModdingAPI.Framework.Exceptions;
+
+namespace StardewModdingAPI.Framework.Serialisation.SmapiConverters
+{
+    /// <summary>Handles deserialisation of <see cref="SemanticVersion"/>.</summary>
+    internal class SemanticVersionConverter : SimpleReadOnlyConverter<ISemanticVersion>
+    {
+        /*********
+        ** Protected 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)
+        {
+            int major = obj.Value<int>(nameof(ISemanticVersion.MajorVersion));
+            int minor = obj.Value<int>(nameof(ISemanticVersion.MinorVersion));
+            int patch = obj.Value<int>(nameof(ISemanticVersion.PatchVersion));
+            string build = obj.Value<string>(nameof(ISemanticVersion.Build));
+            return new LegacyManifestVersion(major, minor, patch, build);
+        }
+
+        /// <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)
+        {
+            if (string.IsNullOrWhiteSpace(str))
+                return null;
+            if (!SemanticVersion.TryParse(str, out ISemanticVersion version))
+                throw new SParseException($"Can't parse semantic version from invalid value '{str}', should be formatted like 1.2, 1.2.30, or 1.2.30-beta (path: {path}).");
+            return version;
+        }
+    }
+}