public IntPtr BuildWriter(Type type, bool ignoreCustomSerialization) { var constantsBuilder = module.DefineType(type.Name + "_GroBufWriter_" + Guid.NewGuid(), TypeAttributes.Class | TypeAttributes.Public); constantsBuilder.DefineField("pointers", typeof(IntPtr[]), FieldAttributes.Private | FieldAttributes.Static); constantsBuilder.DefineField("delegates", typeof(Delegate[]), FieldAttributes.Private | FieldAttributes.Static); var constantsBuilderContext = new WriterConstantsBuilderContext(groBufWriter, constantsBuilder, writerCollection, dataMembersExtractor); constantsBuilderContext.BuildConstants(type, true, ignoreCustomSerialization); var constantsType = constantsBuilder.CreateTypeInfo(); var fields = constantsBuilderContext.GetFields().ToDictionary(pair => pair.Key, pair => pair.Value.Select(constantsType.GetField).ToArray()); var context = new WriterTypeBuilderContext(groBufWriter, module, constantsType, fields, writerCollection, dataMembersExtractor); var writer = context.GetWriter(type, true, ignoreCustomSerialization); var initializer = BuildInitializer(constantsType.GetField("pointers", BindingFlags.Static | BindingFlags.NonPublic), constantsType.GetField("delegates", BindingFlags.Static | BindingFlags.NonPublic)); var compiledDynamicMethods = context.GetMethods(); var pointers = new IntPtr[compiledDynamicMethods.Length]; var delegates = new Delegate[compiledDynamicMethods.Length]; foreach (var pair in compiledDynamicMethods) { var compiledDynamicMethod = pair.Value; var index = compiledDynamicMethod.Index; pointers[index] = compiledDynamicMethod.Pointer; delegates[index] = compiledDynamicMethod.Delegate; if (compiledDynamicMethod.Pointer != writer.Pointer) { groBufWriter.writersWithCustomSerialization[pair.Key] = (IntPtr?)compiledDynamicMethod.Pointer; } } initializer(pointers, delegates, context.GetFieldInitializers()); return(writer.Pointer); }
public WriterMethodBuilderContext(WriterTypeBuilderContext context, GroboIL il) { Context = context; Il = il; LocalInt = il.DeclareLocal(typeof(int)); }
public void BuildWriter(WriterTypeBuilderContext writerTypeBuilderContext) { var method = new DynamicMethod("Write_" + Type.Name + "_" + Guid.NewGuid(), typeof(void), new[] { Type, typeof(bool), typeof(IntPtr), typeof(int).MakeByRefType(), typeof(WriterContext) }, writerTypeBuilderContext.Module, true); writerTypeBuilderContext.SetWriterMethod(Type, method); using (var il = new GroboIL(method)) { var context = new WriterMethodBuilderContext(writerTypeBuilderContext, il); var notEmptyLabel = il.DefineLabel("notEmpty"); if (CheckEmpty(context, notEmptyLabel)) // Check if obj is empty { context.WriteNull(); // Write null & return } il.MarkLabel(notEmptyLabel); // Now we know that obj is not empty if (!Type.IsValueType && IsReference && writerTypeBuilderContext.GroBufWriter.Options.HasFlag(GroBufOptions.PackReferences)) { // Pack reference var index = il.DeclareLocal(typeof(int)); context.LoadIndex(); // stack: [external index] context.LoadContext(); // stack: [external index, context] il.Ldfld(WriterContext.StartField); // stack: [external index, context.start] il.Sub(); // stack: [external index - context.start] il.Stloc(index); // index = external index - context.start; stack: [] context.LoadContext(); // stack: [context] il.Ldfld(typeof(WriterContext).GetField("objects", BindingFlags.Public | BindingFlags.Instance)); // stack: [context.objects] context.LoadObj(); // stack: [context.objects, obj] var reference = il.DeclareLocal(typeof(int)); il.Ldloca(reference); // stack: [context.objects, obj, ref reference] int dummy; il.Call(HackHelpers.GetMethodDefinition <Dictionary <object, int> >(dict => dict.TryGetValue(null, out dummy))); // stack: [context.object.TryGetValue(obj, out reference)] var storeLocationLabel = il.DefineLabel("storeLocation"); il.Brfalse(storeLocationLabel); // Current object is in dict il.Ldloc(index); il.Ldloc(reference); // stack: [index, reference] var skipSelfLabel = il.DefineLabel("skipSelf"); il.Beq(skipSelfLabel); // if(index == reference) goto skipSelf; stack: [] il.Ldloc(index); // stack: [index] il.Ldloc(reference); // stack: [index, reference] var badReferenceLabel = il.DefineLabel("badReference"); il.Blt(badReferenceLabel, false); // if(index < reference) goto badReference; stack: [] context.WriteTypeCode(GroBufTypeCode.Reference); // result[index++] = GroBufTypeCode.Reference context.GoToCurrentLocation(); // stack: [&result[index]] il.Ldloc(reference); // stack: [&result[index], reference] il.Stind(typeof(int)); // *(int *)&result[index] = reference context.IncreaseIndexBy4(); // index += 4 il.Ret(); il.MarkLabel(badReferenceLabel); il.Ldstr("Bad reference"); il.Newobj(typeof(DataCorruptedException).GetConstructor(new[] { typeof(string) })); il.Throw(); il.MarkLabel(storeLocationLabel); context.LoadContext(); // stack: [context] il.Ldfld(typeof(WriterContext).GetField("objects", BindingFlags.Public | BindingFlags.Instance)); // stack: [context.objects] context.LoadObj(); // stack: [context.objects, obj] il.Ldloc(index); // stack: [context.objects, obj, index] il.Call(HackHelpers.GetMethodDefinition <Dictionary <object, int> >(dict => dict.Add(null, 0))); // context.objects.Add(obj, index); il.MarkLabel(skipSelfLabel); } WriteNotEmpty(context); // Write obj il.Ret(); } var @delegate = method.CreateDelegate(typeof(WriterDelegate <>).MakeGenericType(Type)); var pointer = GroBufHelpers.ExtractDynamicMethodPointer(method); writerTypeBuilderContext.SetWriterPointer(Type, pointer, @delegate); }