public FlatArray(Message msg, int count, out AllocationContext allocContext) : this()
{
var elementSize = this.GetElementSize();
// TODO: handle composite
if (elementSize == ElementSize.Composite)
{
int words = 1 + count * (ReflectionCache <T> .KnownDataWords + ReflectionCache <T> .KnownPointerWords);
msg.Allocate(
words,
out var offset,
out var segment);
segment[offset | Word.unit] = new StructPointer
{
Type = PointerType.Struct,
WordOffset = count,
DataWords = ReflectionCache <T> .KnownDataWords,
PointerWords = ReflectionCache <T> .KnownPointerWords,
}.RawValue;
allocContext = new AllocationContext(segment, offset + 1, words - 1);
_pointer = new AbsPointer(
segment,
0,
new ListPointer
{
Type = PointerType.List,
WordOffset = offset,
ElementSize = elementSize,
ElementCount = (uint)words - 1
});
}
else
{
int words = TypeHelpers.SizeOf(elementSize) * count / 8;
msg.Allocate(
words,
out var offset,
out var segment);
allocContext = new AllocationContext(segment, offset, words);
_pointer = new AbsPointer(
segment,
0,
new ListPointer
{
Type = PointerType.List,
WordOffset = offset,
ElementSize = elementSize,
ElementCount = (uint)count
});
}
}
public CompositeList(Message msg, int count, out AllocationContext allocContext)
{
var tag = new StructPointer
{
Type = PointerType.Struct,
WordOffset = 0,
DataWords = ReflectionCache <T> .KnownDataWords,
PointerWords = ReflectionCache <T> .KnownPointerWords,
};
_elementCount = 0;
_dataWords = tag.DataWords;
_pointerWords = tag.PointerWords;
var elementWords = count * (_dataWords + _pointerWords);
msg.Allocate(elementWords + 1, out _tagOffset, out _segment);
allocContext = new AllocationContext(_segment, _tagOffset + 1, elementWords);
_segment[_tagOffset | Word.unit] = tag.RawValue;
}
public Text(Message msg, int bytesWithNulTerminator, out AllocationContext allocContext)
{
_bytes = new FlatArray <byte>(msg, bytesWithNulTerminator, out allocContext);
}
public Data(Message msg, int length, out AllocationContext allocContext)
{
_bytes = new FlatArray <byte>(msg, length, out allocContext);
}