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feat: transitive grpc alias #41

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Merged
ronimizy merged 1 commit into from
Mar 28, 2026
Merged

feat: transitive grpc alias #41

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7 changes: 7 additions & 0 deletions SourceKit.sln
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Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SourceKit.Analyzers.MemberA
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SourceKit.Analyzers.MemberAccessibility.Tests", "tests\SourceKit.Analyzers.MemberAccessibility.Tests\SourceKit.Analyzers.MemberAccessibility.Tests.csproj", "{EACEDBCD-081E-4F95-A81E-B62CD18D3028}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SourceKit.Generators.Grpc.Samples.Transitive", "samples\generators\SourceKit.Generators.Grpc.Samples.Transitive\SourceKit.Generators.Grpc.Samples.Transitive.csproj", "{B50328ED-E004-47F6-88F6-AC2E0BEABC17}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Expand Down Expand Up @@ -137,6 +139,7 @@ Global
{B3EEEF25-A90E-404F-9874-93A2E6990468} = {68973D47-37E1-492E-8F62-E94B002349BB}
{6D49F53F-4765-4108-9AA7-1470D5FB8FD7} = {365210F4-5F33-49FD-9E14-552154E26285}
{EACEDBCD-081E-4F95-A81E-B62CD18D3028} = {CB9AFB88-6DC1-436D-8F6F-398E065A07DE}
{B50328ED-E004-47F6-88F6-AC2E0BEABC17} = {84DBA1F6-2A81-452F-97EE-AEB57C0E7BC6}
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{637C01C1-3A3C-4FC6-9874-6CFBA4319A79}.Release|Any CPU.ActiveCfg = Release|Any CPU
Expand Down Expand Up @@ -263,5 +266,9 @@ Global
{EACEDBCD-081E-4F95-A81E-B62CD18D3028}.Debug|Any CPU.Build.0 = Debug|Any CPU
{EACEDBCD-081E-4F95-A81E-B62CD18D3028}.Release|Any CPU.ActiveCfg = Release|Any CPU
{EACEDBCD-081E-4F95-A81E-B62CD18D3028}.Release|Any CPU.Build.0 = Release|Any CPU
{B50328ED-E004-47F6-88F6-AC2E0BEABC17}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{B50328ED-E004-47F6-88F6-AC2E0BEABC17}.Debug|Any CPU.Build.0 = Debug|Any CPU
{B50328ED-E004-47F6-88F6-AC2E0BEABC17}.Release|Any CPU.ActiveCfg = Release|Any CPU
{B50328ED-E004-47F6-88F6-AC2E0BEABC17}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
EndGlobal
21 changes: 21 additions & 0 deletions samples/generators/SourceKit.Generators.Grpc.Samples.Transitive/Program.cs
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@@ -0,0 +1,21 @@
using System;
using System.Collections.Generic;

Console.WriteLine("Hello, World!");

var model = new ProtoProtoModel(
pageToken: "",
values: new[] { "" },
pageSize: 0,
intValues: new[] { 0 },
intOneofValue: null,
stringOneofValue: null,
notNullStringValue: "",
nullIntValue: null,
nullStringValue: null,
mapValue: new Dictionary<int, string> { [1] = "1" },
m: new ProtoProtoModel.Types.InnerMessage(@enum: ProtoProtoModel.Types.InnerEnum.Aboba1));

var emptyModel = new ProtoEmptyMessage();

Console.WriteLine(model);
14 changes: 14 additions & 0 deletions ...it.Generators.Grpc.Samples.Transitive/SourceKit.Generators.Grpc.Samples.Transitive.csproj
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@@ -0,0 +1,14 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net10.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>

<ItemGroup>
<ProjectReference Include="..\SourceKit.Generators.Grpc.Samples\SourceKit.Generators.Grpc.Samples.csproj" />
</ItemGroup>

</Project>
131 changes: 102 additions & 29 deletions src/generators/SourceKit.Generators.Grpc/Generators/ProtoMessageAliasGenerator.cs
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Original file line number Diff line number Diff line change
@@ -1,46 +1,119 @@
using System.Collections.Immutable;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using SourceKit.Extensions;
using SourceKit.Generators.Grpc.Receivers;
using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;

namespace SourceKit.Generators.Grpc.Generators;

[Generator]
public class ProtoMessageAliasGenerator : ISourceGenerator
public sealed class ProtoMessageAliasGenerator : IIncrementalGenerator
{
public void Initialize(GeneratorInitializationContext context)
public void Initialize(IncrementalGeneratorInitializationContext context)
{
context.RegisterForSyntaxNotifications(() => new ProtoMessageAliasReceiver());
IncrementalValuesProvider<INamedTypeSymbol> allTypes = context.CompilationProvider
.SelectMany(static (compilation, ct) => EnumerateNestedTypesAndSelf(compilation.GlobalNamespace, ct));

allTypes = allTypes
.Where(type => type.ContainingNamespace.ToDisplayString().StartsWith("Google") is false);

IncrementalValueProvider<INamedTypeSymbol?> messageInterfaceSymbol = context.CompilationProvider
.Select(static (compilation, _) => compilation.GetTypeByMetadataName(
Constants.ProtobufMessageInterfaceFullyQualifiedName));

IncrementalValueProvider<INamedTypeSymbol?> enumAttributeSymbol = context.CompilationProvider
.Select(static (compilation, _) => compilation.GetTypeByMetadataName(
Constants.ProtobufOriginalNameAttributeFullyQualifiedName));

IncrementalValuesProvider<INamedTypeSymbol> protoMessages = allTypes
.Combine(messageInterfaceSymbol)
.Where(static tuple => tuple.Right is not null)
.Where(static tuple => tuple.Left.TypeKind is TypeKind.Class)
.Where(static tuple => tuple.Left.AllInterfaces.Contains(tuple.Right!, SymbolEqualityComparer.Default))
.Where(static tuple => tuple.Left.ContainingType is null)
.Select(static (tuple, _) => tuple.Left);

IncrementalValuesProvider<INamedTypeSymbol> protoEnums = allTypes
.Combine(enumAttributeSymbol)
.Where(static tuple => tuple.Left.TypeKind is TypeKind.Enum)
.Where(static tuple => tuple.Left
.GetMembers()
.OfType<IFieldSymbol>()
.All(member => member
.GetAttributes()
.Any(attr => attr.AttributeClass?.Equals(tuple.Right, SymbolEqualityComparer.Default) is true)))
.Where(tuple => tuple.Left.ContainingType is null)
.Select((tuple, _) => tuple.Left);

IncrementalValueProvider<ImmutableArray<INamedTypeSymbol>> protoTypes = protoMessages
.Collect()
.Combine(protoEnums.Collect())
.SelectMany((tuple, _) => tuple.Left.Concat(tuple.Right))
.Collect();

context.RegisterSourceOutput(
protoTypes,
static (context, protoTypes) =>
{
if (protoTypes is [])
return;

UsingDirectiveSyntax[] directives = protoTypes
.GroupBy(x => x.Name, (k, values) => (k, values: values.ToArray()))
.Where(x => x.values.Length is 1)
.Select(x => x.values.Single())
.OrderBy(x => x.Name)
.Select(GenerateAlias)
.ToArray();

if (directives is [])
return;

CompilationUnitSyntax unit = CompilationUnit().AddUsings(directives).NormalizeWhitespace(eol: "\n");
string text = unit.ToFullString();

text = $"""
// <auto-generated>
// This code was generated by a SourceKit.Generators.Grpc code generator.
// https://github.com/itmo-is-dev/SourceKit
// </auto-generated>

{text}
""";

context.AddSource("SourceKit.Generators.Builder.ProtoAlias.cs", text);
});
}

public void Execute(GeneratorExecutionContext context)
private static IEnumerable<INamedTypeSymbol> EnumerateNestedTypesAndSelf(
INamespaceOrTypeSymbol symbol,
CancellationToken cancellationToken)
{
if (context.SyntaxContextReceiver is not ProtoMessageAliasReceiver receiver)
return;

UsingDirectiveSyntax[] directives = receiver.Symbols
.GroupBy(x => x.Name, (k, values) => (k, values: values.ToArray()))
.Where(x => x.values.Length is 1)
.Select(x => x.values.Single())
.OrderBy(x => x.Name)
.Select(GenerateAlias)
.ToArray();

CompilationUnitSyntax unit = CompilationUnit().AddUsings(directives).NormalizeWhitespace(eol: "\n");
string text = unit.ToFullString();

text = $"""
// <auto-generated>
// This code was generated by a SourceKit.Generators.Grpc code generator.
// https://github.com/itmo-is-dev/SourceKit
// </auto-generated>
{text}
""";

context.AddSource("SourceKit.Generators.Builder.ProtoAlias.cs", text);
cancellationToken.ThrowIfCancellationRequested();

if (symbol is INamedTypeSymbol namedTypeSymbol)
{
return namedTypeSymbol
.GetTypeMembers()
.SelectMany(type => EnumerateNestedTypesAndSelf(type, cancellationToken))
.Prepend(namedTypeSymbol);
}

if (symbol is INamespaceSymbol namespaceSymbol)
{
IEnumerable<INamedTypeSymbol> directTypes = namespaceSymbol
.GetTypeMembers()
.SelectMany(type => EnumerateNestedTypesAndSelf(type, cancellationToken));

IEnumerable<INamedTypeSymbol> nestedNamespaceTypes = namespaceSymbol
.GetNamespaceMembers()
.SelectMany(ns => EnumerateNestedTypesAndSelf(ns, cancellationToken));

return directTypes.Concat(nestedNamespaceTypes);
}

return [];
}

private static UsingDirectiveSyntax GenerateAlias(INamedTypeSymbol symbol)
Expand Down
60 changes: 0 additions & 60 deletions src/generators/SourceKit.Generators.Grpc/Receivers/ProtoMessageAliasReceiver.cs
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