/// <summary>
/// Examines the specified type and calculates necessary information
/// about the layout of the structure.
/// </summary>
private static void LoadData()
{
data = new List <SortedFieldInfo>();
Type sortingType = typeof(T);
// insert sort
foreach (FieldInfo fi in sortingType.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
{
SortedFieldInfo info = new SortedFieldInfo();
info.field = fi;
info.offset = OffsetOf(fi);
int insertIndex = data.Count;
while (insertIndex > 0 && info.offset <= data[insertIndex - 1].offset)
{
insertIndex--;
}
data.Insert(insertIndex, info);
}
// Adjust reference type size to zero (arrays, lists, strings)
int omittedBytes = 0;
for (int i = 0; i < data.Count; i++)
{
SortedFieldInfo dat = data[i];
int originalOffset = dat.offset;
dat.offset -= omittedBytes;
data[i] = dat;
Type type = dat.field.FieldType;
if (typeof(IHandle).IsAssignableFrom(type)) // Handle
// Handle is 4 bytes
{
omittedBytes += (Marshal.SizeOf(type) - 4);
}
else if (type.IsSubclassOf(typeof(ValueType)) && !type.IsSubclassOf(typeof(System.Enum)) && !type.IsPrimitive)
{
// Struct could have any # of omitted bytes
omittedBytes += getOmittedBytesFor_Dynamic(dat.field.FieldType);
}
else if (!data[i].field.FieldType.IsValueType)
{
// Ref is 4 bytes
if (i < data.Count - 1)
{
// just in case of alignment issues
omittedBytes += data[i + 1].offset - originalOffset;
}
else
{
omittedBytes += 4;
}
}
}
compactSize = Marshal.SizeOf(typeof(T)) - omittedBytes;
SortedFieldData <T> .omittedBytes = omittedBytes;
}
/// <summary>
/// Creates a byte array contianing a structure with array references expanded to their contents. See remarks.
/// </summary>
/// <param name="t">The type of the structure.</param>
/// <returns>The binary data of the structure.</returns>
/// <remarks>
/// <para>Valid Types: The specified object must be a structure. The only valid reference types
/// (including contents of arrays and their subfields, recursively)
/// are strings, string builders, arrays and generic IList objects. ILists and
/// StringBuilders will be treated as arrays and strings, respectively.</para>
///
/// <para>Encoding: Strings will be written as ASNI strings unless
/// the field name ends with an encoding specifier (_UTF, _UTF7, _UTF8, _UTF32). Chars will
/// always be ANSI. Store chars in a 1-char string field to specify encoding. Arrays of
/// strings will always be ANSI. Concatenate string arrays into a single-string composite
/// field to specify encoding).</para>
///
/// Strings and arrays
/// will not be prefixed with their length. Invalid objects may be silently omitted.
/// IHandle objects will be treated as IntPtrs.</remarks>
public static Byte[] ExpandArraysInStruct <T>(T obj, out int insertedByteCount) where T : struct
{
Type type = typeof(T);
IList <SortedFieldInfo> fields = SortedFieldData <T> .Data;
MemoryStream result = new MemoryStream(1);
BinaryWriter resultWriter = new BinaryWriter(result);
int offsetAdjustment = 0;
for (int i = 0; i < fields.Count; i++)
{
// Get data
SortedFieldInfo field = fields[i];
int targetOffset = field.offset + offsetAdjustment;
object value = fields[i].field.GetValue(obj);
// Seek to output offset
while (result.Capacity < targetOffset)
{
result.Capacity *= 2;
}
result.Seek(targetOffset, SeekOrigin.Begin);
// Write
if (value is StringBuilder)
{
value = value.ToString();
}
if (value is System.Enum)
{
value = GetEnumValue(value);
}
if (canWriteDirect(value))
{
outputField(resultWriter, value);
}
else if (fields[i].field.FieldType.IsArray)
{
offsetAdjustment += outputList(resultWriter, fields[i].field.FieldType.GetElementType(), (System.Collections.IList)value);
}
else if (value is string || value is StringBuilder)
{
if (field.field.Name.EndsWith("_UTF"))
{
offsetAdjustment += WriteStringUTF(resultWriter, value);
}
else if (field.field.Name.EndsWith("_UTF7"))
{
offsetAdjustment += WriteStringUTF7(resultWriter, value);
}
else if (field.field.Name.EndsWith("_UTF8"))
{
offsetAdjustment += WriteStringUTF8(resultWriter, value);
}
else if (field.field.Name.EndsWith("_UTF32"))
{
offsetAdjustment += WriteStringUTF32(resultWriter, value);
}
else
{
offsetAdjustment += WriteString(resultWriter, value);
}
}
else if (objectImplementsGenerigIList(value))
{
offsetAdjustment += outputList(resultWriter, value.GetType().GetGenericArguments()[0], (System.Collections.IList)value);
}
else if (value is ValueType)
{
int extraBytes;
byte[] structData = ExpandArraysInStruct_Dynamic(value, out extraBytes);
result.Write(structData, 0, structData.Length);
offsetAdjustment += extraBytes;
}
}
insertedByteCount = offsetAdjustment;
result.Capacity = (int)result.Length;
return(result.GetBuffer());
}
