Beispiel #1
0
        /// <summary>
        /// Serializes a data reference composed of raw bytes.
        /// </summary>
        /// <param name="tagStream">The stream to write completed blocks of tag data to.</param>
        /// <param name="block">The temporary block to write incomplete tag data to.</param>
        /// <param name="data">The data.</param>
        /// <param name="valueInfo">Information about the value. Can be <c>null</c>.</param>
        private void SerializeDataReference(MemoryStream tagStream, IDataBlock block, byte[] data, TagFieldAttribute valueInfo)
        {
            var  writer = block.Writer;
            uint offset = 0;
            uint size   = 0;

            if (data != null && data.Length > 0)
            {
                // Ensure the block is aligned correctly
                var align = Math.Max(DefaultBlockAlign, (valueInfo != null) ? valueInfo.Align : 0);
                StreamUtil.Align(tagStream, (int)align);

                // Write its data
                offset = (uint)tagStream.Position;
                size   = (uint)data.Length;
                tagStream.Write(data, 0, data.Length);
                StreamUtil.Align(tagStream, DefaultBlockAlign);
            }

            // Write the reference data
            writer.Write(size);
            writer.Write(0);
            writer.Write(0);
            if (size > 0)
            {
                block.WritePointer(offset, typeof(byte[]));
            }
            else
            {
                writer.Write(0);
            }
            writer.Write(0);
        }
Beispiel #2
0
        /// <summary>
        /// Serializes a tag block.
        /// </summary>
        /// <param name="context">The serialization context to use.</param>
        /// <param name="tagStream">The stream to write completed blocks of tag data to.</param>
        /// <param name="block">The temporary block to write incomplete tag data to.</param>
        /// <param name="list">The list of values in the tag block.</param>
        /// <param name="listType">Type of the list.</param>
        private static void SerializeTagBlock(ISerializationContext context, MemoryStream tagStream, IDataBlock block, object list, Type listType)
        {
            var writer    = block.Writer;
            var listCount = 0;

            if (list != null)
            {
                // Use reflection to get the number of elements in the list
                var countProperty = listType.GetProperty("Count");
                listCount = (int)countProperty.GetValue(list);
            }
            if (listCount == 0)
            {
                writer.Write(0);
                writer.Write(0);
                writer.Write(0);
                return;
            }

            // Serialize each value in the list to a data block
            var tagBlock       = context.CreateBlock();
            var enumerableList = (System.Collections.IEnumerable)list;
            var valueType      = listType.GenericTypeArguments[0];

            foreach (var val in enumerableList)
            {
                SerializeValue(context, tagStream, tagBlock, val, null, valueType);
            }

            // Finalize the block and write the tag block reference
            writer.Write(listCount);
            block.WritePointer(tagBlock.Finalize(tagStream), listType);
            writer.Write(0);
        }
Beispiel #3
0
        /// <summary>
        /// Serializes a data reference composed of raw bytes.
        /// </summary>
        /// <param name="tagStream">The stream to write completed blocks of tag data to.</param>
        /// <param name="block">The temporary block to write incomplete tag data to.</param>
        /// <param name="data">The data.</param>
        private static void SerializeDataReference(MemoryStream tagStream, IDataBlock block, byte[] data)
        {
            var  writer = block.Writer;
            uint offset = 0;
            uint size   = 0;

            if (data != null && data.Length > 0)
            {
                // The block has data - write it out to the tag
                StreamUtil.Align(tagStream, DefaultBlockAlign);
                offset = (uint)tagStream.Position;
                size   = (uint)data.Length;
                tagStream.Write(data, 0, data.Length);
                StreamUtil.Align(tagStream, DefaultBlockAlign);
            }

            // Write the reference data
            writer.Write(size);
            writer.Write(0);
            writer.Write(0);
            if (size > 0)
            {
                block.WritePointer(offset, typeof(byte[]));
            }
            else
            {
                writer.Write(0);
            }
            writer.Write(0);
        }
Beispiel #4
0
        /// <summary>
        /// Serializes a tag block.
        /// </summary>
        /// <param name="version"></param>
        /// <param name="context">The serialization context to use.</param>
        /// <param name="tagStream">The stream to write completed blocks of tag data to.</param>
        /// <param name="block">The temporary block to write incomplete tag data to.</param>
        /// <param name="list">The list of values in the tag block.</param>
        /// <param name="listType">Type of the list.</param>
        /// <param name="valueInfo">Information about the value. Can be <c>null</c>.</param>
        private void SerializeTagBlock(CacheVersion version, ISerializationContext context, MemoryStream tagStream, IDataBlock block, object list, Type listType, TagFieldAttribute valueInfo)
        {
            var writer = block.Writer;
            var count  = 0;

            if (list != null)
            {
                // Use reflection to get the number of elements in the list
                var countProperty = listType.GetProperty("Count");
                count = (int)countProperty.GetValue(list);
            }
            if (count == 0)
            {
                writer.Write(0);
                writer.Write(0);
                writer.Write(0);
                return;
            }

            var elementType = listType.GenericTypeArguments[0];
            TagStructureAttribute structure;

            try
            {
                structure = TagStructure.GetTagStructureInfo(elementType, Version).Structure;
            }
            catch
            {
                structure = null;
            }

            // Serialize each value in the list to a data block
            var tagBlock       = context.CreateBlock();
            var enumerableList = (System.Collections.IEnumerable)list;

            foreach (var val in enumerableList)
            {
                SerializeValue(version, context, tagStream, tagBlock, val, null, elementType);
            }

            // Ensure the block is aligned correctly
            var align = Math.Max(DefaultBlockAlign, (valueInfo != null) ? valueInfo.Align : 0);

            StreamUtil.Align(tagStream, (int)align);

            // Finalize the block and write the tag block reference
            writer.Write(count);
            block.WritePointer(tagBlock.Finalize(tagStream), listType);
            writer.Write(0);
        }
Beispiel #5
0
        private void SerializeIndirectValue(CacheVersion version, ISerializationContext context, MemoryStream tagStream, IDataBlock block, object val, Type valueType)
        {
            var writer = block.Writer;

            if (val == null)
            {
                writer.Write(0);
                return;
            }

            // Serialize the value to a temporary block
            var valueBlock = context.CreateBlock();

            SerializeValue(version, context, tagStream, valueBlock, val, null, valueType);

            // Finalize the block and write the pointer
            block.WritePointer(valueBlock.Finalize(tagStream), valueType);
        }
Beispiel #6
0
        /// <summary>
        /// Serializes a data reference composed of raw bytes.
        /// </summary>
        /// <param name="tagStream">The stream to write completed blocks of tag data to.</param>
        /// <param name="block">The temporary block to write incomplete tag data to.</param>
        /// <param name="data">The data.</param>
        /// <param name="valueInfo">Information about the value. Can be <c>null</c>.</param>
        private static void SerializeDataReference(MemoryStream tagStream, IDataBlock block, byte[] data, TagFieldAttribute valueInfo)
        {
            var writer = block.Writer;
            uint offset = 0;
            uint size = 0;
            if (data != null && data.Length > 0)
            {
                // Ensure the block is aligned correctly
                var align = Math.Max(DefaultBlockAlign, (valueInfo != null) ? valueInfo.DataAlign : 0);
                StreamUtil.Align(tagStream, (int)align);

                // Write its data
                offset = (uint)tagStream.Position;
                size = (uint)data.Length;
                tagStream.Write(data, 0, data.Length);
                StreamUtil.Align(tagStream, DefaultBlockAlign);
            }

            // Write the reference data
            writer.Write(size);
            writer.Write(0);
            writer.Write(0);
            if (size > 0)
                block.WritePointer(offset, typeof(byte[]));
            else
                writer.Write(0);
            writer.Write(0);
        }
Beispiel #7
0
        /// <summary>
        /// Serializes a tag block.
        /// </summary>
        /// <param name="context">The serialization context to use.</param>
        /// <param name="tagStream">The stream to write completed blocks of tag data to.</param>
        /// <param name="block">The temporary block to write incomplete tag data to.</param>
        /// <param name="list">The list of values in the tag block.</param>
        /// <param name="listType">Type of the list.</param>
        /// <param name="valueInfo">Information about the value. Can be <c>null</c>.</param>
        private void SerializeTagBlock(ISerializationContext context, MemoryStream tagStream, IDataBlock block, object list, Type listType, TagFieldAttribute valueInfo)
        {
            var writer = block.Writer;
            var listCount = 0;
            if (list != null)
            {
                // Use reflection to get the number of elements in the list
                var countProperty = listType.GetProperty("Count");
                listCount = (int)countProperty.GetValue(list);
            }
            if (listCount == 0)
            {
                writer.Write(0);
                writer.Write(0);
                writer.Write(0);
                return;
            }

            // Serialize each value in the list to a data block
            var tagBlock = context.CreateBlock();
            var enumerableList = (System.Collections.IEnumerable)list;
            var valueType = listType.GenericTypeArguments[0];
            foreach (var val in enumerableList)
                SerializeValue(context, tagStream, tagBlock, val, null, valueType);

            // Ensure the block is aligned correctly
            var align = Math.Max(DefaultBlockAlign, (valueInfo != null) ? valueInfo.DataAlign : 0);
            StreamUtil.Align(tagStream, (int)align);

            // Finalize the block and write the tag block reference
            writer.Write(listCount);
            block.WritePointer(tagBlock.Finalize(tagStream), listType);
            writer.Write(0);
        }
Beispiel #8
0
        private void SerializeIndirectValue(ISerializationContext context, MemoryStream tagStream, IDataBlock block, object val, Type valueType)
        {
            var writer = block.Writer;
            if (val == null)
            {
                writer.Write(0);
                return;
            }

            // Serialize the value to a temporary block
            var valueBlock = context.CreateBlock();
            SerializeValue(context, tagStream, valueBlock, val, null, valueType);

            // Finalize the block and write the pointer
            block.WritePointer(valueBlock.Finalize(tagStream), valueType);
        }