// Weave takes an AssemblyDefinition to be compatible with both old and
// new weavers:
// * old takes a filepath, new takes a in-memory byte[]
// * old uses DefaultAssemblyResolver with added dependencies paths,
// new uses ...?
//
// => assembly: the one we are currently weaving (MyGame.dll)
// => resolver: useful in case we need to resolve any of the assembly's
// assembly.MainModule.AssemblyReferences.
// -> we can resolve ANY of them given that the resolver
// works properly (need custom one for ILPostProcessor)
// -> IMPORTANT: .Resolve() takes an AssemblyNameReference.
// those from assembly.MainModule.AssemblyReferences are
// guaranteed to be resolve-able.
// Parsing from a string for Library/.../Mirror.dll
// would not be guaranteed to be resolve-able because
// for ILPostProcessor we can't assume where Mirror.dll
// is etc.
public bool Weave(AssemblyDefinition assembly, IAssemblyResolver resolver, out bool modified)
{
WeavingFailed = false;
modified = false;
try
{
CurrentAssembly = assembly;
// fix "No writer found for ..." error
// https://github.com/vis2k/Mirror/issues/2579
// -> when restarting Unity, weaver would try to weave a DLL
// again
// -> resulting in two GeneratedNetworkCode classes (see ILSpy)
// -> the second one wouldn't have all the writer types setup
if (CurrentAssembly.MainModule.ContainsClass(GeneratedCodeNamespace, GeneratedCodeClassName))
{
//Log.Warning($"Weaver: skipping {CurrentAssembly.Name} because already weaved");
return(true);
}
weaverTypes = new WeaverTypes(CurrentAssembly, Log, ref WeavingFailed);
// weaverTypes are needed for CreateGeneratedCodeClass
CreateGeneratedCodeClass();
// WeaverList depends on WeaverTypes setup because it uses Import
syncVarAccessLists = new SyncVarAccessLists();
// initialize readers & writers with this assembly.
// we need to do this in every Process() call.
// otherwise we would get
// "System.ArgumentException: Member ... is declared in another module and needs to be imported"
// errors when still using the previous module's reader/writer funcs.
writers = new Writers(CurrentAssembly, weaverTypes, GeneratedCodeClass, Log);
readers = new Readers(CurrentAssembly, weaverTypes, GeneratedCodeClass, Log);
Stopwatch rwstopwatch = Stopwatch.StartNew();
// Need to track modified from ReaderWriterProcessor too because it could find custom read/write functions or create functions for NetworkMessages
modified = ReaderWriterProcessor.Process(CurrentAssembly, resolver, Log, writers, readers, ref WeavingFailed);
rwstopwatch.Stop();
Console.WriteLine($"Find all reader and writers took {rwstopwatch.ElapsedMilliseconds} milliseconds");
ModuleDefinition moduleDefinition = CurrentAssembly.MainModule;
Console.WriteLine($"Script Module: {moduleDefinition.Name}");
modified |= WeaveModule(moduleDefinition);
if (WeavingFailed)
{
return(false);
}
if (modified)
{
SyncVarAttributeAccessReplacer.Process(moduleDefinition, syncVarAccessLists);
// add class that holds read/write functions
moduleDefinition.Types.Add(GeneratedCodeClass);
ReaderWriterProcessor.InitializeReaderAndWriters(CurrentAssembly, weaverTypes, writers, readers, GeneratedCodeClass);
// DO NOT WRITE here.
// CompilationFinishedHook writes to the file.
// ILPostProcessor writes to in-memory assembly.
// it depends on the caller.
//CurrentAssembly.Write(new WriterParameters{ WriteSymbols = true });
}
return(true);
}
catch (Exception e)
{
Log.Error($"Exception :{e}");
WeavingFailed = true;
return(false);
}
}
static bool Weave(string assName, IEnumerable <string> dependencies)
{
using (DefaultAssemblyResolver asmResolver = new DefaultAssemblyResolver())
using (CurrentAssembly = AssemblyDefinition.ReadAssembly(assName, new ReaderParameters {
ReadWrite = true, ReadSymbols = true, AssemblyResolver = asmResolver
}))
{
asmResolver.AddSearchDirectory(Path.GetDirectoryName(assName));
asmResolver.AddSearchDirectory(Helpers.UnityEngineDllDirectoryName());
if (dependencies != null)
{
foreach (string path in dependencies)
{
asmResolver.AddSearchDirectory(path);
}
}
// fix "No writer found for ..." error
// https://github.com/vis2k/Mirror/issues/2579
// -> when restarting Unity, weaver would try to weave a DLL
// again
// -> resulting in two GeneratedNetworkCode classes (see ILSpy)
// -> the second one wouldn't have all the writer types setup
if (ContainsGeneratedCodeClass(CurrentAssembly.MainModule))
{
//Log.Warning($"Weaver: skipping {CurrentAssembly.Name} because already weaved");
return(true);
}
WeaverTypes.SetupTargetTypes(CurrentAssembly);
CreateGeneratedCodeClass();
// WeaverList depends on WeaverTypes setup because it uses Import
WeaveLists = new WeaverLists();
System.Diagnostics.Stopwatch rwstopwatch = System.Diagnostics.Stopwatch.StartNew();
// Need to track modified from ReaderWriterProcessor too because it could find custom read/write functions or create functions for NetworkMessages
bool modified = ReaderWriterProcessor.Process(CurrentAssembly);
rwstopwatch.Stop();
Console.WriteLine($"Find all reader and writers took {rwstopwatch.ElapsedMilliseconds} milliseconds");
ModuleDefinition moduleDefinition = CurrentAssembly.MainModule;
Console.WriteLine($"Script Module: {moduleDefinition.Name}");
modified |= WeaveModule(moduleDefinition);
if (WeavingFailed)
{
return(false);
}
if (modified)
{
PropertySiteProcessor.Process(moduleDefinition);
// add class that holds read/write functions
moduleDefinition.Types.Add(GeneratedCodeClass);
ReaderWriterProcessor.InitializeReaderAndWriters(CurrentAssembly);
// write to outputDir if specified, otherwise perform in-place write
WriterParameters writeParams = new WriterParameters {
WriteSymbols = true
};
CurrentAssembly.Write(writeParams);
}
}
return(true);
}