AOT compatible: make NuGet.ProjectModel AOT compatible (#7191)

Author: Nigusu-Allehu

src/NuGet.Core/NuGet.ProjectModel/CacheFileFormat.cs

@@ -9,12 +9,18 @@
 using System.Text.Encodings.Web;
 using System.Text.Json;
 using System.Text.Json.Serialization;
+using System.Text.Json.Serialization.Metadata;
 using NuGet.Common;
 
 namespace NuGet.ProjectModel
 {
-    public static class CacheFileFormat
+    public static partial class CacheFileFormat
     {
+        [JsonSerializable(typeof(CacheFile))]
+        private sealed partial class CacheFileSourceGen : JsonSerializerContext
+        {
+        }
+
         private static JsonSerializerOptions SerializerOptions = new JsonSerializerOptions
         {
             WriteIndented = true,
@@ -23,7 +29,10 @@ public static class CacheFileFormat
             DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
             Converters = { new AssetsLogMessageConverter() },
             NumberHandling = JsonNumberHandling.AllowReadingFromString,
-            AllowTrailingCommas = true
+            AllowTrailingCommas = true,
+            TypeInfoResolver = JsonTypeInfoResolver.Combine(
+                CacheFileSourceGen.Default,
+                AssetsLogMessage.AssetsLogMessageSourceGen.Default)
         };
 
         /// <summary>
@@ -33,12 +42,12 @@ private class AssetsLogMessageConverter : JsonConverter<IAssetsLogMessage>
         {
             public override IAssetsLogMessage Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
             {
-                return JsonSerializer.Deserialize<AssetsLogMessage>(ref reader, options);
+                return JsonSerializer.Deserialize(ref reader, (JsonTypeInfo<AssetsLogMessage>)options.GetTypeInfo(typeof(AssetsLogMessage)));
             }
 
             public override void Write(Utf8JsonWriter writer, IAssetsLogMessage value, JsonSerializerOptions options)
             {
-                JsonSerializer.Serialize(writer, (AssetsLogMessage)value, options);
+                JsonSerializer.Serialize(writer, (AssetsLogMessage)value, (JsonTypeInfo<AssetsLogMessage>)options.GetTypeInfo(typeof(AssetsLogMessage)));
             }
         }
 
@@ -50,8 +59,7 @@ public static CacheFile Read(Stream stream, ILogger log, string path)
 
             try
             {
-                var cacheFile = JsonSerializer.Deserialize<CacheFile>(utf8Json: stream, SerializerOptions);
-                return cacheFile;
+                return JsonSerializer.Deserialize(utf8Json: stream, (JsonTypeInfo<CacheFile>)SerializerOptions.GetTypeInfo(typeof(CacheFile)));
             }
             catch (Exception ex) when (ex is ArgumentNullException || ex is JsonException || ex is NotSupportedException)
             {
@@ -89,7 +97,7 @@ public static void Write(Stream stream, CacheFile cacheFile)
 
         private static void Write(TextWriter textWriter, CacheFile cacheFile)
         {
-            textWriter.Write(JsonSerializer.Serialize(cacheFile, SerializerOptions));
+            textWriter.Write(JsonSerializer.Serialize(cacheFile, (JsonTypeInfo<CacheFile>)SerializerOptions.GetTypeInfo(typeof(CacheFile))));
         }
     }
 }

src/NuGet.Core/NuGet.ProjectModel/LockFile/AssetsLogMessage.cs

@@ -11,11 +11,11 @@
 
 namespace NuGet.ProjectModel
 {
-    public class AssetsLogMessage : IAssetsLogMessage, IEquatable<IAssetsLogMessage>
+    public partial class AssetsLogMessage : IAssetsLogMessage, IEquatable<IAssetsLogMessage>
     {
-        [JsonConverter(typeof(JsonStringEnumConverter))]
+        [JsonConverter(typeof(JsonStringEnumConverter<NuGetLogCode>))]
         public NuGetLogCode Code { get; }
-        [JsonConverter(typeof(JsonStringEnumConverter))]
+        [JsonConverter(typeof(JsonStringEnumConverter<LogLevel>))]
         public LogLevel Level { get; }
         public string Message { get; }
         public string ProjectPath { get; set; }
@@ -70,8 +70,13 @@ public static IAssetsLogMessage Create(IRestoreLogMessage logMessage)
             };
         }
 
+        [JsonSerializable(typeof(AssetsLogMessage))]
+        internal sealed partial class AssetsLogMessageSourceGen : JsonSerializerContext
+        {
+        }
+
         [JsonConstructor]
-        private AssetsLogMessage(
+        internal AssetsLogMessage(
             LogLevel level,
             NuGetLogCode code,
             string message,

src/NuGet.Core/NuGet.ProjectModel/NuGet.ProjectModel.csproj

@@ -7,7 +7,6 @@
     <Shipping>true</Shipping>
     <IncludeInVSIX>true</IncludeInVSIX>
     <XPLATProject>true</XPLATProject>
-    <IsAotCompatible>false</IsAotCompatible>
     <Description>NuGet's core types and interfaces for PackageReference-based restore, such as lock files, assets file and internal restore models.</Description>
   </PropertyGroup>