Add support for serializing Dictionary<TKey,TValue[]> and List<T[]>

Author: prochnowc

YamlDotNet.Analyzers.StaticGenerator/ClassSyntaxReceiver.cs

@@ -94,30 +94,40 @@ private void AddSerializableClass(INamedTypeSymbol? classSymbol)
 
                     if (member is IPropertySymbol propertySymbol)
                     {
-                        classObject.PropertySymbols.Add(propertySymbol);
-                        CheckForSupportedGeneric(propertySymbol.Type);
+                        if (!classObject.PropertySymbols.ContainsName(propertySymbol))
+                        {
+                            classObject.PropertySymbols.Add(propertySymbol);
+                            CheckForSupportedGeneric(propertySymbol.Type);
+                        }
                     }
                     else if (member is IFieldSymbol fieldSymbol)
                     {
-                        classObject.FieldSymbols.Add(fieldSymbol);
-                        CheckForSupportedGeneric(fieldSymbol.Type);
+                        if (!classObject.FieldSymbols.ContainsName(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"))
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnDeserializedAttribute")
+                            && !classObject.OnDeserializedMethods.ContainsName(methodSymbol))
                         {
                             classObject.OnDeserializedMethods.Add(methodSymbol);
                         }
-                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnDeserializingAttribute"))
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnDeserializingAttribute")
+                            && !classObject.OnDeserializingMethods.ContainsName(methodSymbol))
                         {
                             classObject.OnDeserializingMethods.Add(methodSymbol);
                         }
-                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializedAttribute"))
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializedAttribute")
+                            && !classObject.OnSerializedMethods.ContainsName(methodSymbol))
                         {
                             classObject.OnSerializedMethods.Add(methodSymbol);
                         }
-                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializingAttribute"))
+                        if (methodAttributes.Any(x => x.AttributeClass!.ToDisplayString() == "YamlDotNet.Serialization.Callbacks.OnSerializingAttribute")
+                            && !classObject.OnSerializingMethods.ContainsName(methodSymbol))
                         {
                             classObject.OnSerializingMethods.Add(methodSymbol);
                         }
@@ -146,10 +156,12 @@ private void CheckForSupportedGeneric(ITypeSymbol type)
             else if (typeName.StartsWith("System.Collections.Generic.Dictionary"))
             {
                 Classes.Add(sanitizedTypeName, new ClassObject(sanitizedTypeName, (INamedTypeSymbol)type, true));
+                CheckForSupportedGeneric(((INamedTypeSymbol)type).TypeArguments[1]);
             }
             else if (typeName.StartsWith("System.Collections.Generic.List"))
             {
                 Classes.Add(sanitizedTypeName, new ClassObject(sanitizedTypeName, (INamedTypeSymbol)type, isList: true));
+                CheckForSupportedGeneric(((INamedTypeSymbol)type).TypeArguments[0]);
             }
         }
     }

YamlDotNet.Analyzers.StaticGenerator/SymbolCollectionExtensions.cs

@@ -0,0 +1,36 @@
+// This file is part of YamlDotNet - A .NET library for YAML.
+// Copyright (c) Antoine Aubry and contributors
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+// of the Software, and to permit persons to whom the Software is furnished to do
+// so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.CodeAnalysis;
+
+namespace YamlDotNet.Analyzers.StaticGenerator
+{
+    static class SymbolCollectionExtensions
+    {
+        public static bool ContainsName<T>(this IEnumerable<T> enumerable, T symbol)
+            where T : ISymbol
+        {
+            return enumerable.Any(t => t.Name == symbol.Name);
+        }
+    }
+}

YamlDotNet.Analyzers.StaticGenerator/SymbolExtensions.cs

@@ -121,6 +121,9 @@ static string GetGenericTypes(IReadOnlyList<ITypeSymbol> typeArguments)
                     case ITypeParameterSymbol typeParameterSymbol:
                         output.Add(typeParameterSymbol.Name + typeParameterSymbol.GetNullable());
                         break;
+                    case IArrayTypeSymbol arrayTypeSymbol:
+                        output.Add(GetFullName(arrayTypeSymbol.ElementType) + "[]");
+                        break;
                     default:
                         throw new NotSupportedException($"Cannot generate type name from type argument {argument.GetType().FullName}");
                 }

YamlDotNet.Core7AoTCompileTest/Program.cs

@@ -61,6 +61,13 @@
 MyDictionary:
   x: y
   a: b
+MyDictionaryOfArrays:
+  a:
+  - a
+  - b
+  b:
+  - c
+  - d
 MyList:
 - a
 - b
@@ -117,6 +124,15 @@
     }
 }
 
+Console.WriteLine("MyDictionaryOfArrays == null: <{0}>", x.MyDictionaryOfArrays == null);
+if (x.MyDictionaryOfArrays != null)
+{
+    foreach (var kvp in x.MyDictionaryOfArrays)
+    {
+        Console.WriteLine("MyDictionaryOfArrays[{0}] = <{1}>", kvp.Key, string.Join(',', kvp.Value));
+    }
+}
+
 Console.WriteLine("MyList == null: <{0}>", x.MyList == null);
 if (x.MyList != null)
 {
@@ -191,6 +207,7 @@ public class PrimitiveTypes
     public Inner[]? InnerArray { get; set; }
     public MyArray? MyArray { get; set; }
     public Dictionary<string, string>? MyDictionary { get; set; }
+    public Dictionary<string, string[]>? MyDictionaryOfArrays { get; set; }
     public List<string>? MyList { get; set; }
     public Inherited Inherited { get; set; }
     public ExternalModel External { get; set; }