Add an option to skip parsing properties that aren't decorated with the protoc attribute

also update to dotnet 8 and update the project folder structure

README.md

@@ -12,6 +12,7 @@ Arguments:
   target_assembly_name  The name of an assembly to parse. If omitted, all assemblies in the target_assembly_dir will be parsed.
 Options:
   --skip_enums                                Skip parsing enums and replace references to them with int32.
+  --skip_properties_without_protoc_attribute  Skip properties that aren't decorated with `GeneratedCode("protoc")` when parsing
 ```
 
 Limitations

protodec.sln

@@ -3,9 +3,9 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.6.33513.286
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "protodec", "protodec\protodec.csproj", "{A5493BF4-F78C-4DCF-B449-D9A9A52FB5F0}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "protodec", "src\protodec\protodec.csproj", "{A5493BF4-F78C-4DCF-B449-D9A9A52FB5F0}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LibProtodec", "LibProtodec\LibProtodec.csproj", "{5F6DAD82-D9AD-4CE5-86E6-D20C9F059A4D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LibProtodec", "src\LibProtodec\LibProtodec.csproj", "{5F6DAD82-D9AD-4CE5-86E6-D20C9F059A4D}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

src/LibProtodec/Enum.cs

@@ -5,7 +5,7 @@ namespace LibProtodec;
 
 public sealed class Enum : Protobuf
 {
-    public readonly List<KeyValuePair<int, string>> Fields = new();
+    public readonly List<KeyValuePair<int, string>> Fields = [];
 
     public override void WriteFileTo(IndentedTextWriter writer)
     {
@@ -22,7 +22,7 @@ public sealed class Enum : Protobuf
 
         if (Fields.ContainsDuplicateKey())
         {
-            writer.WriteLine("""option allow_alias = true;""");
+            writer.WriteLine("option allow_alias = true;");
         }
 
         foreach ((int id, string name) in Fields)

src/LibProtodec/LibProtodec.csproj

@@ -2,24 +2,25 @@
 
   <PropertyGroup>
     <Authors>Xpl0itR</Authors>
+    <BaseOutputPath>$(SolutionDir)bin/$(MSBuildProjectName)</BaseOutputPath>
     <Copyright>Copyright © 2023 Xpl0itR</Copyright>
     <Description>A library to decompile protobuf parser/serializer classes compiled by protoc, from dotnet assemblies back into .proto definitions</Description>
     <IncludeSymbols>true</IncludeSymbols>
     <IsPackable>true</IsPackable>
-    <LangVersion>11</LangVersion>
+    <LangVersion>Latest</LangVersion>
     <Nullable>enable</Nullable>
     <OutputType>Library</OutputType>
     <PackageLicenseExpression>MPL-2.0</PackageLicenseExpression>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="CommunityToolkit.Diagnostics" Version="8.2.2" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
-    <PackageReference Include="System.Reflection.MetadataLoadContext" Version="7.0.0" />
+    <PackageReference Include="System.Reflection.MetadataLoadContext" Version="8.0.0" />
   </ItemGroup>
 
 </Project>

src/LibProtodec/Message.cs

@@ -7,10 +7,10 @@ namespace LibProtodec;
 
 public sealed class Message : Protobuf
 {
-    public readonly HashSet<string>                                              Imports = new();
+    public readonly HashSet<string>                                              Imports = [];
-    public readonly Dictionary<string, int[]>                                    OneOfs  = new();
+    public readonly Dictionary<string, int[]>                                    OneOfs  = [];
-    public readonly Dictionary<int, (bool IsOptional, string Type, string Name)> Fields  = new();
+    public readonly Dictionary<int, (bool IsOptional, string Type, string Name)> Fields  = [];
-    public readonly Dictionary<string, Protobuf>                                 Nested  = new();
+    public readonly Dictionary<string, Protobuf>                                 Nested  = [];
 
     public override void WriteFileTo(IndentedTextWriter writer)
     {

src/LibProtodec/Protodec.cs

@@ -12,14 +12,8 @@ public sealed class Protodec
 {
     public delegate bool LookupFunc(string key, [MaybeNullWhen(false)] out string value);
 
-    private readonly Dictionary<string, Protobuf> _protobufs;
+    private readonly Dictionary<string, Protobuf> _protobufs      = [];
-    private readonly HashSet<string>              _currentDescent;
+    private readonly HashSet<string>              _currentDescent = [];
-
-    public Protodec()
-    {
-        _protobufs      = new Dictionary<string, Protobuf>();
-        _currentDescent = new HashSet<string>();
-    }
 
     public LookupFunc? CustomTypeLookup { get; init; }
 
@@ -40,11 +34,11 @@ public sealed class Protodec
         }
     }
 
-    public void ParseMessage(Type type, bool skipEnums = false)
+    public void ParseMessage(Type type, bool skipEnums = false, bool skipPropertiesWithoutProtocAttribute = false)
     {
         Guard.IsTrue(type.IsClass);
 
-        ParseMessageInternal(type, skipEnums, null);
+        ParseMessageInternal(type, skipEnums, skipPropertiesWithoutProtocAttribute, null);
         _currentDescent.Clear();
     }
 
@@ -66,7 +60,7 @@ public sealed class Protodec
             || !_currentDescent.Add(type.Name);
     }
 
-    private void ParseMessageInternal(Type messageClass, bool skipEnums, Message? parentMessage)
+    private void ParseMessageInternal(Type messageClass, bool skipEnums, bool skipPropertiesWithoutProtocAttribute, Message? parentMessage)
     {
         if (IsParsed(messageClass, parentMessage, out Dictionary<string, Protobuf> protobufs))
         {
@@ -87,7 +81,9 @@ public sealed class Protodec
         {
             PropertyInfo property = properties[pi];
 
-            if (property.GetMethod is null || property.GetMethod.IsVirtual)
+            if (property.GetMethod is null
+             || property.GetMethod.IsVirtual 
+             || (skipPropertiesWithoutProtocAttribute && !HasProtocAttribute(property)))
             {
                 fi--;
                 continue;
@@ -116,7 +112,7 @@ public sealed class Protodec
 
             int    msgFieldId         = (int)idField.GetRawConstantValue()!;
             bool   msgFieldIsOptional = false;
-            string msgFieldType       = ParseFieldType(propertyType, skipEnums, message);
+            string msgFieldType       = ParseFieldType(propertyType, skipEnums, skipPropertiesWithoutProtocAttribute, message);
             string msgFieldName       = TranslateMessageFieldName(property.Name);
 
             // optional protobuf fields will generate an additional "Has" get-only boolean property immediately after the real property
@@ -157,7 +153,7 @@ public sealed class Protodec
         protobufs.Add(@enum.Name, @enum);
     }
 
-    private string ParseFieldType(Type type, bool skipEnums, Message message)
+    private string ParseFieldType(Type type, bool skipEnums, bool skipPropertiesWithoutProtocAttribute, Message message)
     {
         switch (type.Name)
         {
@@ -184,11 +180,11 @@ public sealed class Protodec
         switch (type.GenericTypeArguments.Length)
         {
             case 1:
-                string t = ParseFieldType(type.GenericTypeArguments[0], skipEnums, message);
+                string t = ParseFieldType(type.GenericTypeArguments[0], skipEnums, skipPropertiesWithoutProtocAttribute, message);
                 return "repeated " + t;
             case 2:
-                string t1 = ParseFieldType(type.GenericTypeArguments[0], skipEnums, message);
+                string t1 = ParseFieldType(type.GenericTypeArguments[0], skipEnums, skipPropertiesWithoutProtocAttribute, message);
-                string t2 = ParseFieldType(type.GenericTypeArguments[1], skipEnums, message);
+                string t2 = ParseFieldType(type.GenericTypeArguments[1], skipEnums, skipPropertiesWithoutProtocAttribute, message);
                 return $"map<{t1}, {t2}>";
         }
 
@@ -208,7 +204,7 @@ public sealed class Protodec
         }
         else
         {
-            ParseMessageInternal(type, skipEnums, message);
+            ParseMessageInternal(type, skipEnums, skipPropertiesWithoutProtocAttribute, message);
         }
 
         if (!type.IsNested)
@@ -219,6 +215,12 @@ public sealed class Protodec
         return type.Name;
     }
 
+    private static bool HasProtocAttribute(PropertyInfo property) =>
+        property.GetCustomAttributesData()
+                .Any(attr =>
+                         attr.AttributeType.Name                      == "GeneratedCodeAttribute"
+                      && attr.ConstructorArguments[0].Value as string == "protoc");
+
     private string TranslateProtobufName(string name) =>
         CustomNameLookup?.Invoke(name, out string? translatedName) == true
             ? translatedName

src/protodec/Program.cs

@@ -13,6 +13,7 @@ const string help   = """
       target_assembly_name  The name of an assembly to parse. If omitted, all assemblies in the target_assembly_dir will be parsed.
     Options:
       --skip_enums                                Skip parsing enums and replace references to them with int32.
+      --skip_properties_without_protoc_attribute  Skip properties that aren't decorated with `GeneratedCode("protoc")` when parsing
     """;
 
 if (args.Length < 2)
@@ -30,13 +31,14 @@ if (args.Length > 2 && !args[2].StartsWith('-'))
 string assemblyDir = args[0];
 string outPath     = Path.GetFullPath(args[1]);
 bool   skipEnums   = args.Contains("--skip_enums");
+bool   skipPropertiesWithoutProtocAttribute = args.Contains("--skip_properties_without_protoc_attribute");
 
 using AssemblyInspector inspector = new(assemblyDir, assemblyName);
 Protodec protodec = new();
 
 foreach (Type message in inspector.GetProtobufMessageTypes())
 {
-    protodec.ParseMessage(message, skipEnums);
+    protodec.ParseMessage(message, skipEnums, skipPropertiesWithoutProtocAttribute);
 }
 
 if (Directory.Exists(outPath))

src/protodec/protodec.csproj

@@ -1,11 +1,12 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <LangVersion>11</LangVersion>
+    <BaseOutputPath>$(SolutionDir)bin/$(MSBuildProjectName)</BaseOutputPath>
+    <LangVersion>Latest</LangVersion>
     <Nullable>enable</Nullable>
     <OutputType>Exe</OutputType>
     <RuntimeIdentifiers>win-x64;linux-x64</RuntimeIdentifiers>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>