private static Dictionary <string, BinField> GetFieldsMap(TypeImpl type) => BinField.Get(type.Type).ToDictionary(GetFieldId, GetField);
private static void GenerateObjectReader(ILGenerator il, TypeImpl type)
{
var addRef = typeof(RefReaderWatcher)
.GetTypeInfo()
.GetMethod(nameof(RefReaderWatcher.AddRef), BindingFlags.Public | BindingFlags.Static)
.MakeGenericMethod(type.Type);
var tryGetRef = typeof(RefReaderWatcher)
.GetTypeInfo()
.GetMethod(nameof(RefReaderWatcher.TryGetRef), BindingFlags.Public | BindingFlags.Static)
.MakeGenericMethod(type.Type);
var getTypeFromHandle = typeof(Type)
.GetTypeInfo()
.GetMethod(nameof(Type.GetTypeFromHandle), BindingFlags.Public | BindingFlags.Static);
var defaultCtor = type.TypeInfo.GetConstructor(Type.EmptyTypes);
var getUninitializedObject = typeof(FormatterServices)
.GetTypeInfo()
.GetMethod(nameof(FormatterServices.GetUninitializedObject), BindingFlags.Public | BindingFlags.Static);
var dynamicObjectRead = typeof(DynamicObjectReader <>)
.MakeGenericType(type.Type)
.GetTypeInfo()
.GetMethod(nameof(DynamicObjectReader <object> .Read), BindingFlags.Public | BindingFlags.Static);
var stringEquals = typeof(string)
.GetTypeInfo()
.GetMethod(nameof(string.Equals), new[] { typeof(string), typeof(string), typeof(StringComparison) });
var onDeserialized = typeof(IBinSerializable).GetMethod(nameof(IBinSerializable.OnDeserialized));
il.DeclareLocal(typeof(int)); // ref if
il.DeclareLocal(type.Type); // readed object
il.DeclareLocal(typeof(string)); // last readed field id
il.DeclareLocal(typeof(int)); // readed object version
il.DeclareLocal(typeof(DeserializationInfo)); // info
var resultLabel = il.DefineLabel();
var readFastLabel = il.DefineLabel();
// Process reference id
if (!type.TypeInfo.IsValueType)
{
var tryLoadReferenceLabel = il.DefineLabel();
// Read reference id
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamReader(typeof(int))); // Read ref id
il.Emit(OpCodes.Dup); // Duplicate ref id
il.Emit(OpCodes.Stloc_0); // Set ref id to local
// Check if result null
il.Emit(OpCodes.Brtrue, tryLoadReferenceLabel); // Check if null was written
// Null was written (return null)
il.Emit(OpCodes.Ldnull);
il.Emit(OpCodes.Stloc_1); // Set result to null
il.Emit(OpCodes.Br, resultLabel); // Jump to result
// Try get readed reference
il.MarkLabel(tryLoadReferenceLabel);
il.Emit(OpCodes.Ldloc_0); // Load reference id
il.Emit(OpCodes.Ldloca_S, (byte)1); // Load address of result
il.Emit(OpCodes.Call, tryGetRef);
il.Emit(OpCodes.Brtrue, resultLabel); // Jump to result if reference already exist
}
// Read version
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamReader(typeof(int))); // Read saved version
il.Emit(OpCodes.Stloc_3); // Save version to local
var reader = SerializerTypes.TryGetStreamReader(type);
if (reader != null)
{
// Read
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Call, reader);
il.Emit(OpCodes.Stloc_1); // Set result to local
// Add reference to watcher
if (!type.TypeInfo.IsValueType)
{
il.Emit(OpCodes.Ldloc_0); // Load reference id
il.Emit(OpCodes.Ldloc_1); // Load result object reference
il.Emit(OpCodes.Call, addRef);
}
}
else
{
// Create
if (!type.TypeInfo.IsValueType)
{
if (defaultCtor != null)
{
il.Emit(OpCodes.Newobj, defaultCtor);
il.Emit(OpCodes.Stloc_1); // Set result to local
}
else
{
il.Emit(OpCodes.Ldtoken, type.Type);
il.Emit(OpCodes.Call, getTypeFromHandle);
il.Emit(OpCodes.Call, getUninitializedObject);
il.Emit(OpCodes.Castclass, type.Type);
il.Emit(OpCodes.Stloc_1); // Set result to local
}
}
else
{
il.Emit(OpCodes.Ldloca_S, (byte)1); // Load result local address
il.Emit(OpCodes.Initobj, type.Type);
}
// Add reference to watcher
if (!type.TypeInfo.IsValueType)
{
il.Emit(OpCodes.Ldloc_0); // Load reference id
il.Emit(OpCodes.Ldloc_1); // Load result object reference
il.Emit(OpCodes.Call, addRef);
}
// Read code type version
var version = SerializerTypes.GetVersion(type);
il.Emit(OpCodes.Ldloc_3); // Load version
il.Emit(OpCodes.Ldc_I4, version); // Load program type version
il.Emit(OpCodes.Beq, readFastLabel);
// Call dynamic read if versions not equal
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Ldloc_1); // Load obj instance
il.Emit(OpCodes.Ldloc_3); // Load version
il.Emit(OpCodes.Call, dynamicObjectRead); // Do dynamic read
il.Emit(OpCodes.Stloc_1); // Set readed value to result local
il.Emit(OpCodes.Br, resultLabel); // Jump to return code part
il.MarkLabel(readFastLabel);
// Read
var typeReader = SerializerTypes.TryGetTypeReader(type);
if (typeReader != null)
{
// Read type
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Ldloc_1); // Load obj instance
il.Emit(OpCodes.Ldloc_3); // Load version
il.Emit(OpCodes.Call, typeReader);
il.Emit(OpCodes.Stloc_1); // Set result to local
}
else
{
// Read fields
Label?nextFieldLabel = null;
foreach (var binField in BinField.Get(type.Type))
{
var markCurrent = nextFieldLabel != null;
if (nextFieldLabel == null)
{
nextFieldLabel = il.DefineLabel();
}
// Read field id
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamReader(typeof(string))); // Read field id
il.Emit(OpCodes.Stloc_2); // Save last readed field id
// Mark next field label only after field read
if (markCurrent)
{
il.MarkLabel(nextFieldLabel.Value);
nextFieldLabel = il.DefineLabel();
}
// Compare field id with endToken
il.Emit(OpCodes.Ldloc_2); // Load readed field id
il.Emit(OpCodes.Ldstr, SerializerTypes.TypeEndToken); // Load endToken id
il.Emit(OpCodes.Ldc_I4, (int)StringComparison.Ordinal); // Load comparsion type
il.Emit(OpCodes.Call, stringEquals); // Compare
il.Emit(OpCodes.Brtrue, resultLabel); // This is the end
// Compare field ids, if it not equals then skip read
il.Emit(OpCodes.Ldloc_2); // Load readed field id
il.Emit(OpCodes.Ldstr, binField.Id); // Load field id
il.Emit(OpCodes.Ldc_I4, (int)StringComparison.Ordinal); // Load comparsion type
il.Emit(OpCodes.Call, stringEquals); // Compare
il.Emit(OpCodes.Brfalse, nextFieldLabel.Value); // These aren't the field your looking for
var deserialize = typeof(BinSerializer <>)
.MakeGenericType(binField.Type)
.GetTypeInfo()
.GetMethod(nameof(BinSerializer <object> .Deserialize), BindingFlags.Static | BindingFlags.Public);
// Prepeare stack to field set
if (type.TypeInfo.IsValueType)
{
il.Emit(OpCodes.Ldloca_S, (byte)1);
}
else
{
il.Emit(OpCodes.Ldloc_1);
}
// Read field
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Call, deserialize);
// Set field
binField.EmitWrite(il);
}
// Mark jump (for last field)
if (nextFieldLabel != null)
{
il.MarkLabel(nextFieldLabel.Value);
}
// Skip end
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamSkiper(typeof(string)));
}
}
// Return result and invoke callback
il.MarkLabel(resultLabel);
// Invoke deserialzation callback
if (typeof(IBinSerializable).IsAssignableFrom(type.Type))
{
il.Emit(OpCodes.Ldloca_S, (byte)4); // Load result local address
il.Emit(OpCodes.Ldloc_3); // Load version
il.Emit(OpCodes.Call, typeof(DeserializationInfo).GetConstructor(new Type[] { typeof(int) }));
il.Emit(OpCodes.Ldloc_1); // Load deserialized object
il.Emit(OpCodes.Ldloc_S, (byte)4); // Load created DeserialzationInfo
il.Emit(OpCodes.Callvirt, onDeserialized); // Call onDeserialized
}
// Return result
il.Emit(OpCodes.Ldloc_1);
BSDebug.TraceEnd(il, "Read " + type.TypeInfo.Name);
il.Emit(OpCodes.Ret);
}
private static void GenerateObjectWriter(ILGenerator il, TypeImpl type)
{
var getRefId = typeof(RefWriterWatcher)
.GetTypeInfo()
.GetMethod(nameof(RefWriterWatcher.GetRefId), BindingFlags.Public | BindingFlags.Static);
var onSerializing = typeof(IBinSerializable).GetMethod(nameof(IBinSerializable.OnSerializing));
il.DeclareLocal(typeof(bool));
il.DeclareLocal(typeof(SerializationInfo));
var skipTypeLabel = il.DefineLabel();
BSDebug.TraceStart(il, "Write " + type.TypeInfo.Name);
// Invoke deserialzation callback
if (typeof(IBinSerializable).IsAssignableFrom(type.Type))
{
il.Emit(OpCodes.Ldloca_S, (byte)1); // Load result local address
il.Emit(OpCodes.Initobj, typeof(SerializationInfo));
il.Emit(OpCodes.Ldarg_1); // Load serializing object
il.Emit(OpCodes.Ldloc_1); // Load created SerializationInfo
il.Emit(OpCodes.Callvirt, onSerializing); // Call onSerializing
}
// Write type
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldstr, SerializerTypes.GetTypeId(type));
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamWriter(typeof(string)));
if (!type.TypeInfo.IsValueType)
{
// Write refId
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Ldarg_1); // Load obj
il.Emit(OpCodes.Ldloca_S, (byte)0); // Load address of bool local
il.Emit(OpCodes.Call, getRefId); // Obj => RefId
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamWriter(typeof(int)));
// Check case when reference type already serialized.
// If null be returned then created flag be zero too and serialization will be skipped.
il.Emit(OpCodes.Ldloc_0);
il.Emit(OpCodes.Brfalse, skipTypeLabel);
}
// Write type version
var version = SerializerTypes.GetVersion(type);
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Ldc_I4, version); // Load version
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamWriter(typeof(int)));
// If writer exist then just write
var writer = SerializerTypes.TryGetStreamWriter(type) ?? SerializerTypes.TryGetTypeWriter(type);
if (writer != null)
{
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Ldarg_1); // Load obj
il.Emit(OpCodes.Call, writer); // Write to stream
}
else
{
foreach (var binField in BinField.Get(type.Type))
{
var skipFieldLabel = il.DefineLabel();
// If field is null then skip it
if (!binField.IsValueType)
{
il.Emit(OpCodes.Ldarg_1); // Load object
binField.EmitRead(il); // Read field form object
il.Emit(OpCodes.Brfalse, skipFieldLabel); // Skip if field is null
}
// Write field id
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Ldstr, binField.Id); // Load field id
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamWriter(typeof(string)));
var serialize = typeof(BinSerializer <>)
.MakeGenericType(binField.Type)
.GetTypeInfo()
.GetMethod(nameof(BinSerializer <object> .Serialize), BindingFlags.Static | BindingFlags.Public);
// Write field
il.Emit(OpCodes.Ldarg_0); // Load stream
il.Emit(OpCodes.Ldarg_1); // Load object
binField.EmitRead(il); // Read field from object
il.Emit(OpCodes.Call, serialize); // Write field value
// Skip field label
il.MarkLabel(skipFieldLabel);
}
// Write end id
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldstr, SerializerTypes.TypeEndToken);
il.Emit(OpCodes.Call, SerializerTypes.TryGetStreamWriter(typeof(string)));
}
// Skip type label
il.MarkLabel(skipTypeLabel);
BSDebug.TraceEnd(il, "Write " + type.TypeInfo.Name);
// End
il.Emit(OpCodes.Ret);
}
private static Dictionary <string, BinField> GetFieldsMap(Type type)
{
return(BinField.Get(type).ToDictionary(GetFieldId, GetField));
}