I see the AssemblyBuilder is Obsolete in unity 2023.1. It says the similar functionality can be achieved using the Roslyn compiler. So which Roslyn compiler API should I use. Is there any code example or documents in msdn?
bump
I have the same problem, it is deprecated but it is not clear how to use the Roslyn compiler from my scripts.
Bump.
Would be a great if anyone from the Unity team could take a look at this.
I dont think AssemblyBuilder is involved in Mono.Cecil or any IL Weaving
For example context on this, the code in both Mirage and Mirror: AssemblyBuilder is used to compile a list of .cs files into a .dll for unit tests. The tests then run IL Weaver on that .dll file.
using System;
using System.Collections.Generic;
using System.IO;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using UnityEditor;
using UnityEngine;
public static class BuildScripts
{
[MenuItem("Build/Generate Dll")]
public static void Build()
{
List<SyntaxTree> trees = new();
string[] scriptFolderPathArray = { "Assets/Codes" };
foreach (var folderPath in scriptFolderPathArray)
{
string[] scriptsPath = Directory.GetFiles(folderPath, "*.cs", SearchOption.AllDirectories);
foreach (string filePath in scriptsPath)
{
var originalText = File.ReadAllText(filePath);
var syntaxTree = CSharpSyntaxTree.ParseText(originalText);
trees.Add(syntaxTree);
}
}
List<PortableExecutableReference> references = new();
foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
{
if (assembly.IsDynamic)
{
continue;
}
//如果脚本中包含拓展函数，会导致错误 ： error CS0121: The call is ambiguous between the following methods or properties: 'XXX' and 'XXX'
if (assembly.FullName.Contains("Assembly-CSharp"))
{
continue;
}
if (!string.IsNullOrEmpty(assembly.Location))
{
references.Add(MetadataReference.CreateFromFile(assembly.Location));
}
}
CSharpCompilationOptions options = new(OutputKind.DynamicallyLinkedLibrary, optimizationLevel: OptimizationLevel.Release, allowUnsafe: true, warningLevel: 1);
var compilation = CSharpCompilation.Create("Gen", trees, references, options);
string output = "./Code";
if (!Directory.Exists(output))
{
Directory.CreateDirectory(output);
}
var result = compilation.Emit(Path.Combine(output, "Generated.dll"));
Debug.Log($"编译结果：{result.Success} | 输出路径：{Path.Combine(output, "Gen.dll")}");
foreach (var resultDiagnostic in result.Diagnostics)
{
Debug.Log(resultDiagnostic.ToString());
}
}
}
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