Add support for including types defined in another assembly in static code generation

YamlDotNet.Analyzers.StaticGenerator/ClassSyntaxReceiver.cs

@@ -44,69 +44,86 @@ public void OnVisitSyntaxNode(GeneratorSyntaxContext context)
                     if (attributes.Any(attribute => attribute.AttributeClass?.ToDisplayString() == "YamlDotNet.Serialization.YamlStaticContextAttribute"))
                     {
                         YamlStaticContextType = classSymbol;
+
+                        var types =
+                            attributes.Where(attribute => attribute.AttributeClass?.ToDisplayString() == "YamlDotNet.Serialization.YamlSerializableAttribute"
+                                                          && attribute.ConstructorArguments.Any(argument => argument.Type?.ToDisplayString() == "System.Type"))
+                                .Select(attribute => attribute.ConstructorArguments.First().Value)
+                                .ToArray();
+
+                        foreach (var type in types.OfType<INamedTypeSymbol>())
+                        {
+                            AddSerializableClass(type);
+                        }
                     }
 
-                    if (classSymbol.GetAttributes().Any(attribute => attribute.AttributeClass?.ToDisplayString() == "YamlDotNet.Serialization.YamlSerializableAttribute"))
+                    if (classSymbol.GetAttributes().Any(attribute => attribute.AttributeClass?.ToDisplayString() == "YamlDotNet.Serialization.YamlSerializableAttribute"
+                        && attribute.ConstructorArguments.Length == 0))
                     {
-                        ClassObject classObject;
-                        var className = SanitizeName(classSymbol.GetFullName());
-                        if (Classes.ContainsKey(className))
+                        AddSerializableClass(classSymbol);
+                    }
+                }
+            }
+        }
+
+        private void AddSerializableClass(INamedTypeSymbol classSymbol)
+        {
+            ClassObject classObject;
+            var className = SanitizeName(classSymbol.GetFullName());
+            if (Classes.ContainsKey(className))
+            {
+                classObject = Classes[className];
+            }
+            else
+            {
+                classObject = new ClassObject(className, classSymbol);
+                Classes[className] = classObject;
+            }
+            while (classSymbol != null)
+            {
+                var members = classSymbol.GetMembers();
+                foreach (var member in members)
+                {
+                    if (member.IsStatic ||
+                        (member.DeclaredAccessibility != Accessibility.Public &&
+                         member.DeclaredAccessibility != Accessibility.Internal) ||
+                        member.GetAttributes().Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.YamlIgnoreAttribute"))
+                    {
+                        continue;
+                    }
+
+                    if (member is IPropertySymbol propertySymbol)
+                    {
+                        classObject.PropertySymbols.Add(propertySymbol);
+                        CheckForSupportedGeneric(propertySymbol.Type);
+                    }
+                    else if (member is IFieldSymbol fieldSymbol)
+                    {
+                        classObject.FieldSymbols.Add(fieldSymbol);
+                        CheckForSupportedGeneric(fieldSymbol.Type);
+                    }
+                    else if (member is IMethodSymbol methodSymbol)
+                    {
+                        var methodAttributes = methodSymbol.GetAttributes();
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnDeserializedAttribute"))
                         {
-                            classObject = Classes[className];
+                            classObject.OnDeserializedMethods.Add(methodSymbol);
                         }
-                        else
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnDeserializingAttribute"))
                         {
-                            classObject = new ClassObject(className, classSymbol);
-                            Classes[className] = classObject;
+                            classObject.OnDeserializingMethods.Add(methodSymbol);
                         }
-                        while (classSymbol != null)
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializedAttribute"))
                         {
-                            var members = classSymbol.GetMembers();
-                            foreach (var member in members)
-                            {
-                                if (member.IsStatic ||
-                                    (member.DeclaredAccessibility != Accessibility.Public &&
-                                     member.DeclaredAccessibility != Accessibility.Internal) ||
-                                    member.GetAttributes().Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.YamlIgnoreAttribute"))
-                                {
-                                    continue;
-                                }
-
-                                if (member is IPropertySymbol propertySymbol)
-                                {
-                                    classObject.PropertySymbols.Add(propertySymbol);
-                                    CheckForSupportedGeneric(propertySymbol.Type);
-                                }
-                                else if (member is IFieldSymbol fieldSymbol)
-                                {
-                                    classObject.FieldSymbols.Add(fieldSymbol);
-                                    CheckForSupportedGeneric(fieldSymbol.Type);
-                                }
-                                else if (member is IMethodSymbol methodSymbol)
-                                {
-                                    var methodAttributes = methodSymbol.GetAttributes();
-                                    if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnDeserializedAttribute"))
-                                    {
-                                        classObject.OnDeserializedMethods.Add(methodSymbol);
-                                    }
-                                    if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnDeserializingAttribute"))
-                                    {
-                                        classObject.OnDeserializingMethods.Add(methodSymbol);
-                                    }
-                                    if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializedAttribute"))
-                                    {
-                                        classObject.OnSerializedMethods.Add(methodSymbol);
-                                    }
-                                    if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializingAttribute"))
-                                    {
-                                        classObject.OnSerializingMethods.Add(methodSymbol);
-                                    }
-                                }
-                            }
-                            classSymbol = classSymbol.BaseType;
+                            classObject.OnSerializedMethods.Add(methodSymbol);
+                        }
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializingAttribute"))
+                        {
+                            classObject.OnSerializingMethods.Add(methodSymbol);
                         }
                     }
                 }
+                classSymbol = classSymbol.BaseType;
             }
         }
 

YamlDotNet.Analyzers.StaticGenerator/TypeFactoryGenerator.cs

@@ -21,7 +21,6 @@
 
 using System;
 using System.Text;
-using System.Xml;
 using Microsoft.CodeAnalysis;
 
 namespace YamlDotNet.Analyzers.StaticGenerator

YamlDotNet.Core7AoTCompileTest.Model/ExternalModel.cs

@@ -0,0 +1,6 @@
+namespace YamlDotNet.Core7AoTCompileTest.Model;
+
+public class ExternalModel
+{
+    public string? Text { get; set; }
+}

YamlDotNet.Core7AoTCompileTest.Model/YamlDotNet.Core7AoTCompileTest.Model.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net70</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <Import Project="../build/common.props" />
+
+</Project>

YamlDotNet.Core7AoTCompileTest/Program.cs

@@ -24,12 +24,14 @@
 
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using YamlDotNet.Core;
+using YamlDotNet.Core7AoTCompileTest.Model;
 using YamlDotNet.Serialization;
 using YamlDotNet.Serialization.Callbacks;
 
-string yaml = $@"MyBool: true
+string yaml = string.Create(CultureInfo.InvariantCulture, $@"MyBool: true
 hi: 1
 MyChar: h
 MyDateTime: {DateTime.Now}
@@ -65,7 +67,9 @@
 Inherited:
   Inherited: hello
   NotInherited: world
-";
+External:
+  Text: hello
+");
 
 var input = new StringReader(yaml);
 
@@ -91,6 +95,7 @@
 Console.WriteLine("MyUInt64: <{0}>", x.MyUInt64);
 Console.WriteLine("Inner == null: <{0}>", x.Inner == null);
 Console.WriteLine("Inner.Text: <{0}>", x.Inner?.Text);
+Console.WriteLine("External.Text: <{0}>", x.External?.Text);
 foreach (var inner in x.InnerArray)
 {
     Console.WriteLine("InnerArray.Text: <{0}>", inner.Text);
@@ -188,6 +193,7 @@ public class PrimitiveTypes
     public Dictionary<string, string>? MyDictionary { get; set; }
     public List<string>? MyList { get; set; }
     public Inherited Inherited { get; set; }
+    public ExternalModel External { get; set; }
 }
 
 public class InheritedBase

YamlDotNet.Core7AoTCompileTest/StaticAoTContext.cs

@@ -19,12 +19,14 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+using YamlDotNet.Core7AoTCompileTest.Model;
 using YamlDotNet.Serialization;
 
 namespace YamlDotNet.Core7AoTCompileTest
 {
     // The rest of this partial class gets generated at build time
     [YamlStaticContext]
+    [YamlSerializable(typeof(ExternalModel))]
     public partial class StaticContext : YamlDotNet.Serialization.StaticContext
     {
     }

YamlDotNet.Core7AoTCompileTest/YamlDotNet.Core7AoTCompileTest.csproj

@@ -25,6 +25,7 @@
     <ProjectReference Include="..\YamlDotNet.Analyzers.StaticGenerator\YamlDotNet.Analyzers.StaticGenerator.csproj"
                       OutputItemType="Analyzer"
                       ReferenceOutputAssembly="false" />
+    <ProjectReference Include="..\YamlDotNet.Core7AoTCompileTest.Model\YamlDotNet.Core7AoTCompileTest.Model.csproj" />
     <ProjectReference Include="..\YamlDotNet\YamlDotNet.csproj" />
   </ItemGroup>
 

YamlDotNet.sln

@@ -31,6 +31,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "YamlDotNet.Core7AoTCompileT
 EndProject
 Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "YamlDotNet.Samples.Fsharp", "YamlDotNet.Samples.Fsharp\YamlDotNet.Samples.Fsharp.fsproj", "{C047392D-6B20-47CD-9FE6-D0FA326FD262}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "YamlDotNet.Core7AoTCompileTest.Model", "YamlDotNet.Core7AoTCompileTest.Model\YamlDotNet.Core7AoTCompileTest.Model.csproj", "{BFE15564-7C2C-47DA-8302-9BCB39B6864B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -69,6 +71,10 @@ Global
 		{C047392D-6B20-47CD-9FE6-D0FA326FD262}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C047392D-6B20-47CD-9FE6-D0FA326FD262}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C047392D-6B20-47CD-9FE6-D0FA326FD262}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BFE15564-7C2C-47DA-8302-9BCB39B6864B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BFE15564-7C2C-47DA-8302-9BCB39B6864B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BFE15564-7C2C-47DA-8302-9BCB39B6864B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BFE15564-7C2C-47DA-8302-9BCB39B6864B}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

YamlDotNet/Serialization/YamlSerializable.cs

@@ -24,10 +24,25 @@
 namespace YamlDotNet.Serialization
 {
     /// <summary>
-    /// Put this attribute on classes that you want the static analyzer to detect and use.
+    /// Put this attribute either on serializable types or on the <see cref="StaticContext"/> that you want
+    /// the static analyzer to detect and use.
     /// </summary>
-    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
+    [AttributeUsage(AttributeTargets.Class, Inherited = false)]
     public sealed class YamlSerializableAttribute : Attribute
     {
+        /// <summary>
+        /// Use this constructor if the attribute is placed on a serializable class.
+        /// </summary>
+        public YamlSerializableAttribute()
+        {
+        }
+
+        /// <summary>
+        /// Use this constructor if the attribute is placed on the <see cref="StaticContext"/>.
+        /// </summary>
+        /// <param name="serializableType">The type for which to include static code generation.</param>
+        public YamlSerializableAttribute(Type serializableType)
+        {
+        }
     }
 }