Exemple #1
0
 void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     if (!EmitDedicatedMethod(ctx, valueFrom, false))
     {
         ctx.LoadValue(valueFrom);
         if (type.IsValueType)
         {
             ctx.CastToObject(type);
         }
         ctx.LoadValue(key);
         ctx.LoadReaderWriter();
         ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod(recursionCheck ?  "WriteObject" : "WriteRecursionSafeObject"));
     }
 }
 void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     if (!EmitDedicatedMethod(ctx, valueFrom, false))
     {
         ctx.LoadValue(valueFrom);
         if (Helpers.IsValueType(type))
         {
             ctx.CastToObject(type);
         }
         ctx.LoadValue(ctx.MapMetaKeyToCompiledKey(key)); // re-map for formality, but would expect identical, else dedicated method
         ctx.LoadReaderWriter();
         ctx.EmitCall(Helpers.GetStaticMethod(ctx.MapType(typeof(ProtoWriter)), recursionCheck ? "WriteObject" : "WriteRecursionSafeObject", new Type[] { ctx.MapType(typeof(object)), ctx.MapType(typeof(int)), ctx.MapType(typeof(ProtoWriter)) }));
     }
 }
Exemple #3
0
 void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     if (!EmitDedicatedMethod(ctx, valueFrom, true))
     {
         ctx.LoadValue(valueFrom);
         if (type.IsValueType)
         {
             ctx.CastToObject(type);
         }
         ctx.LoadValue(key);
         ctx.LoadReaderWriter();
         ctx.EmitCall(typeof(ProtoReader).GetMethod("ReadObject"));
         ctx.CastFromObject(type);
     }
 }
 void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     if (!EmitDedicatedMethod(ctx, valueFrom, true))
     {
         ctx.LoadValue(valueFrom);
         if (Helpers.IsValueType(type))
         {
             ctx.CastToObject(type);
         }
         ctx.LoadValue(ctx.MapMetaKeyToCompiledKey(key)); // re-map for formality, but would expect identical, else dedicated method
         ctx.LoadReaderWriter();
         ctx.EmitCall(Helpers.GetStaticMethod(ctx.MapType(typeof(ProtoReader)), "ReadObject"));
         ctx.CastFromObject(type);
     }
 }
        public void EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)

        {
            ctx.LoadValue(valueFrom);

            ctx.CastToObject(type);

            ctx.LoadReaderWriter();

            ctx.LoadValue(ctx.MapMetaKeyToCompiledKey(key));

            ctx.LoadValue((int)options);

            ctx.EmitCall(ctx.MapType(typeof(BclHelpers)).GetMethod("WriteNetObject"));
        }
Exemple #6
0
 void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     using (ctx.StartDebugBlockAuto(this))
     {
         if (!EmitDedicatedMethod(ctx, valueFrom, false))
         {
             ctx.LoadValue(valueFrom);
             if (ExpectedType.IsValueType)
             {
                 ctx.CastToObject(ExpectedType);
             }
             ctx.LoadValue(ctx.MapMetaKeyToCompiledKey(_baseKey)); // re-map for formality, but would expect identical, else dedicated method
             ctx.LoadReaderWriter();
             ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("WriteRecursionSafeObject"));
         }
     }
 }
Exemple #7
0
 public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     ctx.LoadValue(valueFrom);
     ctx.CastToObject(type);
     ctx.LoadReaderWriter();
     ctx.LoadValue(key);
     if (type == typeof(object))
     {
         ctx.LoadNullRef();
     }
     else
     {
         ctx.LoadValue(type);
     }
     ctx.EmitCall(typeof(BclHelpers).GetMethod("ReadNetObject"));
     ctx.CastFromObject(type);
 }
Exemple #8
0
 public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     ctx.LoadValue(valueFrom);
     ctx.CastToObject(type);
     ctx.LoadReaderWriter();
     ctx.LoadValue(ctx.MapMetaKeyToCompiledKey(key));
     if (type == ctx.MapType(typeof(object)))
     {
         ctx.LoadNullRef();
     }
     else
     {
         ctx.LoadValue(type);
     }
     ctx.LoadValue((int)options);
     ctx.EmitCall(ctx.MapType(typeof(BclHelpers)).GetMethod("ReadNetObject"));
     ctx.CastFromObject(type);
 }
 void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
 {
     using (ctx.StartDebugBlockAuto(this))
     {
         ProtoTypeCode typeCode = GetTypeCode();
         if (_map == null)
         {
             ctx.LoadValue(valueFrom);
             ctx.ConvertToInt32(typeCode, false);
             ctx.EmitBasicWrite("WriteInt32", null);
         }
         else
         {
             using (Compiler.Local loc = ctx.GetLocalWithValue(ExpectedType, valueFrom))
             {
                 Compiler.CodeLabel @continue = ctx.DefineLabel();
                 for (int i = 0; i < _map.Length; i++)
                 {
                     Compiler.CodeLabel tryNextValue = ctx.DefineLabel(), processThisValue = ctx.DefineLabel();
                     ctx.LoadValue(loc);
                     WriteEnumValue(ctx, typeCode, _map[i].RawValue);
                     ctx.BranchIfEqual(processThisValue, true);
                     ctx.Branch(tryNextValue, true);
                     ctx.MarkLabel(processThisValue);
                     ctx.LoadValue(_map[i].WireValue);
                     ctx.EmitBasicWrite("WriteInt32", null);
                     ctx.Branch(@continue, false);
                     ctx.MarkLabel(tryNextValue);
                 }
                 ctx.LoadReaderWriter();
                 ctx.LoadValue(loc);
                 ctx.CastToObject(ExpectedType);
                 ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("ThrowEnumException"));
                 ctx.MarkLabel(@continue);
             }
         }
     }
 }
        public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local entity)
        {
            using (var val = ctx.GetLocalWithValue(ExpectedType, entity))
            {
                ctx.LoadReader(true);
                ctx.LoadValue(val);
                ctx.CastToObject(ExpectedType);
                ctx.LoadValue(ctx.MapMetaKeyToCompiledKey(key));
                if (ExpectedType == typeof(object))
                {
                    ctx.LoadNullRef();
                }
                else
                {
                    ctx.LoadValue(ExpectedType);
                }
                ctx.LoadValue((int)options);

                ctx.EmitCall(typeof(BclHelpers).GetMethod("ReadNetObject",
                                                          new[] { typeof(ProtoReader), Compiler.ReaderUtil.ByRefStateType, typeof(object),
                                                                  typeof(int), typeof(Type), typeof(BclHelpers.NetObjectOptions) }));
                ctx.CastFromObject(ExpectedType);
            }
        }
Exemple #11
0
        private static void EmitReadAndAddItem(Compiler.CompilerContext ctx, Compiler.Local list, IProtoSerializer tail, MethodInfo add, bool castListForAdd)
        {
            ctx.LoadAddress(list, list.Type); // needs to be the reference in case the list is value-type (static-call)
            if (castListForAdd)
            {
                ctx.Cast(add.DeclaringType);
            }
            Type itemType         = tail.ExpectedType;
            bool tailReturnsValue = tail.ReturnsValue;

            if (tail.RequiresOldValue)
            {
                if (itemType.IsValueType || !tailReturnsValue)
                {
                    // going to need a variable
                    using (Compiler.Local item = new Compiler.Local(ctx, itemType))
                    {
                        if (itemType.IsValueType)
                        {   // initialise the struct
                            ctx.LoadAddress(item, itemType);
                            ctx.EmitCtor(itemType);
                        }
                        else
                        {   // assign null
                            ctx.LoadNullRef();
                            ctx.StoreValue(item);
                        }
                        tail.EmitRead(ctx, item);
                        if (!tailReturnsValue)
                        {
                            ctx.LoadValue(item);
                        }
                    }
                }
                else
                {    // no variable; pass the null on the stack and take the value *off* the stack
                    ctx.LoadNullRef();
                    tail.EmitRead(ctx, null);
                }
            }
            else
            {
                if (tailReturnsValue)
                {   // out only (on the stack); just emit it
                    tail.EmitRead(ctx, null);
                }
                else
                {   // doesn't take anything in nor return anything! WTF?
                    throw new InvalidOperationException();
                }
            }
            // our "Add" is chosen either to take the correct type, or to take "object";
            // we may need to box the value

            Type addParamType = add.GetParameters()[0].ParameterType;

            if (addParamType != itemType)
            {
                if (addParamType == ctx.MapType(typeof(object)))
                {
                    ctx.CastToObject(itemType);
                }
                else if (Helpers.GetUnderlyingType(addParamType) == itemType)
                {                       // list is nullable
                    ConstructorInfo ctor = Helpers.GetConstructor(addParamType, new Type[] { itemType }, false);
                    ctx.EmitCtor(ctor); // the itemType on the stack is now a Nullable<ItemType>
                }
                else
                {
                    throw new InvalidOperationException("Conflicting item/add type");
                }
            }
            ctx.EmitCall(add);
            if (add.ReturnType != ctx.MapType(typeof(void)))
            {
                ctx.DiscardValue();
            }
        }
Exemple #12
0
        private void WriteFieldHandler(
            Compiler.CompilerContext ctx, Type expected, Compiler.Local loc,
            Compiler.CodeLabel handler, Compiler.CodeLabel @continue, IProtoSerializer serializer)
        {
            ctx.MarkLabel(handler);
            Type serType = serializer.ExpectedType;

            if (serType == ExpectedType)
            {
                EmitCreateIfNull(ctx, loc);
                serializer.EmitRead(ctx, loc);
            }
            else
            {
                //RuntimeTypeModel rtm = (RuntimeTypeModel)ctx.Model;
                if (((IProtoTypeSerializer)serializer).CanCreateInstance())
                {
                    Compiler.CodeLabel allDone = ctx.DefineLabel();

                    ctx.LoadValue(loc);
                    ctx.BranchIfFalse(allDone, false); // null is always ok

                    ctx.LoadValue(loc);
                    ctx.TryCast(serType);
                    ctx.BranchIfTrue(allDone, false); // not null, but of the correct type

                    // otherwise, need to convert it
                    ctx.LoadReader(false);
                    ctx.LoadValue(loc);
                    ((IProtoTypeSerializer)serializer).EmitCreateInstance(ctx);

                    ctx.EmitCall(typeof(ProtoReader).GetMethod("Merge",
                                                               new[] { typeof(ProtoReader), typeof(object), typeof(object) }));
                    ctx.Cast(expected);
                    ctx.StoreValue(loc); // Merge always returns a value

                    // nothing needs doing
                    ctx.MarkLabel(allDone);
                }

                if (Helpers.IsValueType(serType))
                {
                    Compiler.CodeLabel initValue = ctx.DefineLabel();
                    Compiler.CodeLabel hasValue  = ctx.DefineLabel();
                    using (Compiler.Local emptyValue = new Compiler.Local(ctx, serType))
                    {
                        ctx.LoadValue(loc);
                        ctx.BranchIfFalse(initValue, false);

                        ctx.LoadValue(loc);
                        ctx.CastFromObject(serType);
                        ctx.Branch(hasValue, false);

                        ctx.MarkLabel(initValue);
                        ctx.InitLocal(serType, emptyValue);
                        ctx.LoadValue(emptyValue);

                        ctx.MarkLabel(hasValue);
                    }
                }
                else
                {
                    ctx.LoadValue(loc);
                    ctx.Cast(serType);
                }

                serializer.EmitRead(ctx, null);
            }

            if (serializer.ReturnsValue)
            {   // update the variable
                if (Helpers.IsValueType(serType))
                {
                    // but box it first in case of value type
                    ctx.CastToObject(serType);
                }
                ctx.StoreValue(loc);
            }
            ctx.Branch(@continue, false); // "continue"
        }
        private static MethodBuilder EmitBoxedSerializer(TypeBuilder type, int i, Type valueType, SerializerPair[] methodPairs, TypeModel model, Compiler.CompilerContext.ILVersion ilVersion, string assemblyName)
        {
            MethodInfo dedicated = methodPairs[i].Deserialize;
            MethodBuilder boxedSerializer = type.DefineMethod("_" + i.ToString(), MethodAttributes.Static, CallingConventions.Standard,
                model.MapType(typeof(object)), new Type[] { model.MapType(typeof(object)), model.MapType(typeof(ProtoReader)) });
            Compiler.CompilerContext ctx = new Compiler.CompilerContext(boxedSerializer.GetILGenerator(), true, false, methodPairs, model, ilVersion, assemblyName, model.MapType(typeof(object)));
            ctx.LoadValue(ctx.InputValue);
            Compiler.CodeLabel @null = ctx.DefineLabel();
            ctx.BranchIfFalse(@null, true);

            Type mappedValueType = valueType;
            ctx.LoadValue(ctx.InputValue);
            ctx.CastFromObject(mappedValueType);
            ctx.LoadReaderWriter();
            ctx.EmitCall(dedicated);
            ctx.CastToObject(mappedValueType);
            ctx.Return();

            ctx.MarkLabel(@null);
            using (Compiler.Local typedVal = new Compiler.Local(ctx, mappedValueType))
            {
                // create a new valueType
                ctx.LoadAddress(typedVal, mappedValueType);
                ctx.EmitCtor(mappedValueType);
                ctx.LoadValue(typedVal);
                ctx.LoadReaderWriter();
                ctx.EmitCall(dedicated);
                ctx.CastToObject(mappedValueType);
                ctx.Return();
            }
            return boxedSerializer;
        }
        private static MethodBuilder EmitBoxedSerializer(TypeBuilder type, int i, Type valueType, SerializerPair[] methodPairs)
        {
            MethodInfo dedicated = methodPairs[i].Deserialize;
            MethodBuilder boxedSerializer = type.DefineMethod("_" + i, MethodAttributes.Static, CallingConventions.Standard,
                typeof(object), new Type[] { typeof(object), typeof(ProtoReader) });
            Compiler.CompilerContext ctx = new Compiler.CompilerContext(boxedSerializer.GetILGenerator(), true, false, methodPairs);
            ctx.LoadValue(Compiler.Local.InputValue);
            Compiler.CodeLabel @null = ctx.DefineLabel();
            ctx.BranchIfFalse(@null, true);

            ctx.LoadValue(Compiler.Local.InputValue);
            ctx.CastFromObject(valueType);
            ctx.LoadReaderWriter();
            ctx.EmitCall(dedicated);
            ctx.CastToObject(valueType);
            ctx.Return();

            ctx.MarkLabel(@null);
            using(Compiler.Local typedVal = new Compiler.Local(ctx, valueType))
            {
                // create a new valueType
                ctx.LoadAddress(typedVal, valueType);
                ctx.EmitCtor(valueType);
                ctx.LoadValue(typedVal);
                ctx.LoadReaderWriter();
                ctx.EmitCall(dedicated);
                ctx.CastToObject(valueType);
                ctx.Return();
            }
            return boxedSerializer;
        }
Exemple #15
0
        private static void EmitReadAndAddItem(Compiler.CompilerContext ctx, Compiler.Local list, IProtoSerializer tail, MethodInfo add)
        {
            ctx.LoadValue(list);
            Type itemType = tail.ExpectedType;

            if (tail.RequiresOldValue)
            {
                if (itemType.IsValueType || !tail.ReturnsValue)
                {
                    // going to need a variable
                    using (Compiler.Local item = new Compiler.Local(ctx, itemType))
                    {
                        if (itemType.IsValueType)
                        {   // initialise the struct
                            ctx.LoadAddress(item, itemType);
                            ctx.EmitCtor(itemType);
                        }
                        else
                        {   // assign null
                            ctx.LoadNullRef();
                            ctx.StoreValue(item);
                        }
                        tail.EmitRead(ctx, item);
                        if (!tail.ReturnsValue)
                        {
                            ctx.LoadValue(item);
                        }
                    }
                }
                else
                {    // no variable; pass the null on the stack and take the value *off* the stack
                    ctx.LoadNullRef();
                    tail.EmitRead(ctx, null);
                }
            }
            else
            {
                if (tail.ReturnsValue)
                {   // out only (on the stack); just emit it
                    tail.EmitRead(ctx, null);
                }
                else
                {   // doesn't take anything in nor return anything! WTF?
                    throw new InvalidOperationException();
                }
            }
            // our "Add" is chosen either to take the correct type, or to take "object";
            // we may need to box the value

            Type addParamType = add.GetParameters()[0].ParameterType;

            if (addParamType != itemType)
            {
                if (addParamType == typeof(object))
                {
                    ctx.CastToObject(itemType);
                }
                else
                {
                    throw new InvalidOperationException("Conflicting item/add type");
                }
            }
            ctx.EmitCall(add);
            if (add.ReturnType != typeof(void))
            {
                ctx.DiscardValue();
            }
        }
        public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local incoming)
        {
            using (ctx.StartDebugBlockAuto(this))
            {
                var g = ctx.G;

                using (Compiler.Local objValue = ctx.GetLocalWithValueForEmitRead(this, incoming))
                    using (Compiler.Local reservedTrap = new Local(ctx, ctx.MapType(typeof(int))))
                        using (Compiler.Local token = new Local(ctx, ctx.MapType(typeof(SubItemToken))))
                            using (Compiler.Local refLocalToNoteObject = new Local(ctx, ctx.MapType(typeof(object))))
                            {
                                ctx.EmitCallReserveNoteObject();
                                ctx.StoreValue(reservedTrap);

                                Compiler.Local[] locals = new Compiler.Local[_members.Length];
                                try
                                {
                                    g.Assign(token, g.ReaderFunc.StartSubItem());

                                    for (int i = 0; i < locals.Length; i++)
                                    {
                                        Type type  = GetMemberType(i);
                                        bool store = true;
                                        locals[i] = new Compiler.Local(ctx, type);
                                        if (!ExpectedType.IsValueType)
                                        {
                                            // value-types always read the old value
                                            if (type.IsValueType)
                                            {
                                                switch (Helpers.GetTypeCode(type))
                                                {
                                                case ProtoTypeCode.Boolean:
                                                case ProtoTypeCode.Byte:
                                                case ProtoTypeCode.Int16:
                                                case ProtoTypeCode.Int32:
                                                case ProtoTypeCode.SByte:
                                                case ProtoTypeCode.UInt16:
                                                case ProtoTypeCode.UInt32:
                                                    ctx.LoadValue(0);
                                                    break;

                                                case ProtoTypeCode.Int64:
                                                case ProtoTypeCode.UInt64:
                                                    ctx.LoadValue(0L);
                                                    break;

                                                case ProtoTypeCode.Single:
                                                    ctx.LoadValue(0.0F);
                                                    break;

                                                case ProtoTypeCode.Double:
                                                    ctx.LoadValue(0.0D);
                                                    break;

                                                case ProtoTypeCode.Decimal:
                                                    ctx.LoadValue(0M);
                                                    break;

                                                case ProtoTypeCode.Guid:
                                                    ctx.LoadValue(Guid.Empty);
                                                    break;

                                                default:
                                                    ctx.LoadAddress(locals[i], type);
                                                    ctx.EmitCtor(type);
                                                    store = false;
                                                    break;
                                                }
                                            }
                                            else
                                            {
                                                ctx.LoadNullRef();
                                            }
                                            if (store)
                                            {
                                                ctx.StoreValue(locals[i]);
                                            }
                                        }
                                    }

                                    Compiler.CodeLabel skipOld = ExpectedType.IsValueType
                                                         ? new Compiler.CodeLabel()
                                                         : ctx.DefineLabel();
                                    if (!ExpectedType.IsValueType)
                                    {
                                        ctx.LoadAddress(objValue, ExpectedType);
                                        ctx.BranchIfFalse(skipOld, false);
                                    }
                                    for (int i = 0; i < _members.Length; i++)
                                    {
                                        ctx.LoadAddress(objValue, ExpectedType);
                                        switch (_members[i].Member.MemberType)
                                        {
                                        case MemberTypes.Field:
                                            ctx.LoadValue((FieldInfo)_members[i].Member);
                                            break;

                                        case MemberTypes.Property:
                                            ctx.LoadValue((PropertyInfo)_members[i].Member);
                                            break;
                                        }
                                        ctx.StoreValue(locals[i]);
                                    }

                                    if (!ExpectedType.IsValueType)
                                    {
                                        ctx.MarkLabel(skipOld);
                                    }

                                    using (Compiler.Local fieldNumber = new Compiler.Local(ctx, ctx.MapType(typeof(int))))
                                    {
                                        Compiler.CodeLabel @continue     = ctx.DefineLabel(),
                                                           processField  = ctx.DefineLabel(),
                                                           notRecognised = ctx.DefineLabel();
                                        ctx.Branch(@continue, false);

                                        Compiler.CodeLabel[] handlers = new Compiler.CodeLabel[_members.Length];
                                        for (int i = 0; i < _members.Length; i++)
                                        {
                                            handlers[i] = ctx.DefineLabel();
                                        }

                                        ctx.MarkLabel(processField);

                                        ctx.LoadValue(fieldNumber);
                                        ctx.LoadValue(1);
                                        ctx.Subtract(); // jump-table is zero-based
                                        ctx.Switch(handlers);

                                        // and the default:
                                        ctx.Branch(notRecognised, false);
                                        for (int i = 0; i < handlers.Length; i++)
                                        {
                                            ctx.MarkLabel(handlers[i]);
                                            IProtoSerializer tail           = _tails[i];
                                            Compiler.Local   oldValIfNeeded = tail.RequiresOldValue ? locals[i] : null;
                                            ctx.ReadNullCheckedTail(locals[i].Type, tail, oldValIfNeeded);
                                            if (tail.EmitReadReturnsValue)
                                            {
                                                if (locals[i].Type.IsValueType)
                                                {
                                                    ctx.StoreValue(locals[i]);
                                                }
                                                else
                                                {
                                                    Compiler.CodeLabel hasValue = ctx.DefineLabel(), allDone = ctx.DefineLabel();

                                                    ctx.CopyValue();
                                                    ctx.BranchIfTrue(hasValue, true); // interpret null as "don't assign"
                                                    ctx.DiscardValue();
                                                    ctx.Branch(allDone, true);
                                                    ctx.MarkLabel(hasValue);
                                                    ctx.StoreValue(locals[i]);
                                                    ctx.MarkLabel(allDone);
                                                }
                                            }
                                            ctx.Branch(@continue, false);
                                        }

                                        ctx.MarkLabel(notRecognised);
                                        ctx.LoadReaderWriter();
                                        ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("SkipField"));

                                        ctx.MarkLabel(@continue);
                                        ctx.EmitBasicRead("ReadFieldHeader", ctx.MapType(typeof(int)));
                                        ctx.CopyValue();
                                        ctx.StoreValue(fieldNumber);
                                        ctx.LoadValue(0);
                                        ctx.BranchIfGreater(processField, false);
                                    }

                                    g.Reader.EndSubItem(token);

                                    for (int i = 0; i < locals.Length; i++)
                                    {
                                        ctx.LoadValue(locals[i]);
                                    }
                                    ctx.EmitCtor(_ctor);
                                    ctx.StoreValue(objValue);

                                    ctx.LoadValue(objValue);
                                    ctx.CastToObject(ctx.MapType(_ctor.DeclaringType));
                                    ctx.StoreValue(refLocalToNoteObject);

                                    ctx.LoadValue(reservedTrap);
                                    ctx.LoadAddress(refLocalToNoteObject, refLocalToNoteObject.Type);
                                    ctx.EmitCallNoteReservedTrappedObject();

                                    if (EmitReadReturnsValue)
                                    {
                                        ctx.LoadValue(objValue);
                                    }
                                }
                                finally
                                {
                                    for (int i = 0; i < locals.Length; i++)
                                    {
                                        if (!locals[i].IsNullRef())
                                        {
                                            locals[i].Dispose(); // release for re-use
                                        }
                                    }
                                }
                            }
            }
        }