Implement custom deserializer

Author: Stefan Schick

src/GitVersion.Configuration/ConfigurationSerializer.cs

@@ -1,3 +1,4 @@
+using GitVersion.VersionCalculation;
 using YamlDotNet.Serialization;
 using YamlDotNet.Serialization.NamingConventions;
 using YamlDotNet.Serialization.TypeInspectors;
@@ -8,6 +9,7 @@ internal class ConfigurationSerializer : IConfigurationSerializer
 {
     private static IDeserializer Deserializer => new DeserializerBuilder()
         .WithNamingConvention(HyphenatedNamingConvention.Instance)
+        .WithTypeConverter(VersionStrategiesConverter.Instance)
         .WithTypeInspector(inspector => new JsonPropertyNameInspector(inspector))
         .Build();
 

src/GitVersion.Core/GitVersion.Core.csproj

@@ -15,6 +15,7 @@
         <PackageReference Include="Polly" />
         <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" />
         <PackageReference Include="Microsoft.Extensions.Options" />
+        <PackageReference Include="YamlDotNet" />
     </ItemGroup>
 
     <ItemGroup>

src/GitVersion.Core/PublicAPI.Shipped.txt

@@ -707,6 +707,12 @@ GitVersion.VersionCalculation.VersionStrategies.None = 0 -> GitVersion.VersionCa
 GitVersion.VersionCalculation.VersionStrategies.TaggedCommit = 8 -> GitVersion.VersionCalculation.VersionStrategies
 GitVersion.VersionCalculation.VersionStrategies.TrackReleaseBranches = 16 -> GitVersion.VersionCalculation.VersionStrategies
 GitVersion.VersionCalculation.VersionStrategies.VersionInBranchName = 32 -> GitVersion.VersionCalculation.VersionStrategies
+GitVersion.VersionCalculation.VersionStrategiesConverter
+GitVersion.VersionCalculation.VersionStrategiesConverter.VersionStrategiesConverter() -> void
+static readonly GitVersion.VersionCalculation.VersionStrategiesConverter.Instance -> YamlDotNet.Serialization.IYamlTypeConverter!
+GitVersion.VersionCalculation.VersionStrategiesConverter.Accepts(System.Type type) -> bool
+GitVersion.VersionCalculation.VersionStrategiesConverter.ReadYaml(YamlDotNet.Core.IParser! parser, System.Type! type, YamlDotNet.Serialization.ObjectDeserializer! rootDeserializer) -> object?
+GitVersion.VersionCalculation.VersionStrategiesConverter.WriteYaml(YamlDotNet.Core.IEmitter! emitter, object? value, System.Type! type, YamlDotNet.Serialization.ObjectSerializer! serializer) -> void
 GitVersion.VersionCalculation.VersionStrategyModule
 GitVersion.VersionCalculation.VersionStrategyModule.RegisterTypes(Microsoft.Extensions.DependencyInjection.IServiceCollection! services) -> void
 GitVersion.VersionCalculation.VersionStrategyModule.VersionStrategyModule() -> void

src/GitVersion.Core/VersionCalculation/VersionStrategies.cs

@@ -1,7 +1,6 @@
 namespace GitVersion.VersionCalculation;
 
 [Flags]
-[JsonConverter(typeof(JsonStringEnumConverter))]
 public enum VersionStrategies
 {
     None = 0,

src/GitVersion.Core/VersionCalculation/VersionStrategiesConverter.cs

@@ -0,0 +1,34 @@
+using YamlDotNet.Core;
+using YamlDotNet.Core.Events;
+using YamlDotNet.Serialization;
+using YamlDotNet.Serialization.NamingConventions;
+
+namespace GitVersion.VersionCalculation;
+
+public class VersionStrategiesConverter : IYamlTypeConverter
+{
+    public static readonly IYamlTypeConverter Instance = new VersionStrategiesConverter();
+
+    public bool Accepts(Type type)
+    {
+        return type == typeof(VersionStrategies[]);
+    }
+
+    public object? ReadYaml(IParser parser, Type type, ObjectDeserializer rootDeserializer)
+    {
+        string data = parser.Consume<Scalar>().Value;
+
+        var deserializer = new DeserializerBuilder()
+            .WithNamingConvention(UnderscoredNamingConvention.Instance)  // see height_in_inches in sample yml 
+            .Build();
+
+        VersionStrategies[] strategies = deserializer.Deserialize<VersionStrategies[]>(data);
+
+        return strategies;
+    }
+
+    public void WriteYaml(IEmitter emitter, object? value, Type type, ObjectSerializer serializer)
+    {
+        // Convert from an object to text during serialization.
+    }
+}