BTDB.FieldHandler.DictionaryFieldHandler.Save C# (CSharp) Метод

        public void Save(IILGen ilGenerator, Action<IILGen> pushWriterOrCtx, Action<IILGen> pushValue)
        {
            var realfinish = ilGenerator.DefineLabel();
            var finish = ilGenerator.DefineLabel();
            var next = ilGenerator.DefineLabel();
            var localValue = ilGenerator.DeclareLocal(_type);
            var typeAsICollection = _type.GetInterface("ICollection`1");
            var typeAsIEnumerable = _type.GetInterface("IEnumerable`1");
            var getEnumeratorMethod = typeAsIEnumerable.GetMethod("GetEnumerator");
            var typeAsIEnumerator = getEnumeratorMethod.ReturnType;
            var typeKeyValuePair = typeAsICollection.GetGenericArguments()[0];
            var localEnumerator = ilGenerator.DeclareLocal(typeAsIEnumerator);
            var localPair = ilGenerator.DeclareLocal(typeKeyValuePair);
            ilGenerator
                .Do(pushValue)
                .Stloc(localValue)
                .Do(pushWriterOrCtx)
                .Ldloc(localValue)
                .Castclass(typeof(object))
                .Callvirt(() => default(IWriterCtx).WriteObject(null))
                .Brfalse(realfinish)
                .Do(Extensions.PushWriterFromCtx(pushWriterOrCtx))
                .Ldloc(localValue)
                .Callvirt(typeAsICollection.GetProperty("Count").GetGetMethod())
                .ConvU4()
                .Callvirt(() => default(AbstractBufferedWriter).WriteVUInt32(0))
                .Ldloc(localValue)
                .Callvirt(getEnumeratorMethod)
                .Stloc(localEnumerator)
                .Try()
                .Mark(next)
                .Ldloc(localEnumerator)
                .Callvirt(() => default(IEnumerator).MoveNext())
                .Brfalse(finish)
                .Ldloc(localEnumerator)
                .Callvirt(typeAsIEnumerator.GetProperty("Current").GetGetMethod())
                .Stloc(localPair);
            _keysHandler.Save(ilGenerator, Extensions.PushWriterOrCtxAsNeeded(pushWriterOrCtx, _keysHandler.NeedsCtx()), il => il
                .Ldloca(localPair)
                .Call(typeKeyValuePair.GetProperty("Key").GetGetMethod())
                .Do(_typeConvertorGenerator.GenerateConversion(_type.GetGenericArguments()[0], _keysHandler.HandledType())));
            _valuesHandler.Save(ilGenerator, Extensions.PushWriterOrCtxAsNeeded(pushWriterOrCtx, _valuesHandler.NeedsCtx()), il => il
                .Ldloca(localPair)
                .Call(typeKeyValuePair.GetProperty("Value").GetGetMethod())
                .Do(_typeConvertorGenerator.GenerateConversion(_type.GetGenericArguments()[1], _valuesHandler.HandledType())));
            ilGenerator
                .Br(next)
                .Mark(finish)
                .Finally()
                .Ldloc(localEnumerator)
                .Callvirt(() => default(IDisposable).Dispose())
                .EndTry()
                .Mark(realfinish);
        }