fix semantic versions always ignoring `-0` tag (#421)

1 files changed, 26 insertions, 0 deletions

diff --git a/src/SMAPI/Framework/LegacyManifestVersion.cs b/src/SMAPI/Framework/LegacyManifestVersion.cs
new file mode 100644
index 00000000..454b9137
--- /dev/null
+++ b/src/SMAPI/Framework/LegacyManifestVersion.cs
@@ -0,0 +1,26 @@
+using Newtonsoft.Json;
+
+namespace StardewModdingAPI.Framework
+{
+    /// <summary>An implementation of <see cref="ISemanticVersion"/> that hamdles the legacy <see cref="IManifest"/> version format.</summary>
+    internal class LegacyManifestVersion : SemanticVersion
+    {
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Construct an instance.</summary>
+        /// <param name="majorVersion">The major version incremented for major API changes.</param>
+        /// <param name="minorVersion">The minor version incremented for backwards-compatible changes.</param>
+        /// <param name="patchVersion">The patch version for backwards-compatible bug fixes.</param>
+        /// <param name="build">An optional build tag.</param>
+        [JsonConstructor]
+        public LegacyManifestVersion(int majorVersion, int minorVersion, int patchVersion, string build = null)
+            : base(
+                majorVersion,
+                minorVersion,
+                patchVersion,
+                build != "0" ? build : null // '0' from incorrect examples in old SMAPI documentation
+            )
+        { }
+    }
+}