internal Type Add(string value)
{
var bytes = Encoding.UTF8.GetBytes(value);
var length = (ulong)bytes.Length;
var bitWidth = BitWidthUtil.Width(length);
if (_options.HasFlag(Options.ShareStrings) && _stringCache.ContainsKey(value))
{
_stack.Add(StackValue.Value(_stringCache[value], bitWidth, Type.String));
return(Type.String);
}
var byteWidth = Align(bitWidth);
Write(length, byteWidth);
var stringOffset = _offset;
var newOffset = NewOffset(length + 1);
Buffer.BlockCopy(bytes, 0, _bytes, (int)_offset, (int)length);
_offset = newOffset;
_stack.Add(StackValue.Value(stringOffset, bitWidth, Type.String));
if (_options.HasFlag(Options.ShareStrings))
{
_stringCache[value] = stringOffset;
}
return(Type.String);
}
private byte Align(BitWidth width)
{
var byteWidth = 1UL << (int)width;
_offset += BitWidthUtil.PaddingSize(_offset, byteWidth);
return((byte)byteWidth);
}
public static StackValue Value(ulong value)
{
return(new StackValue
{
Width = BitWidthUtil.Width(value),
UValue = value,
ValueType = Type.Uint
});
}
public static StackValue Value(double value)
{
return(new StackValue
{
Width = BitWidthUtil.Width(value),
DValue = value,
ValueType = Type.Float
});
}
internal Type AddIndirect(double value)
{
var type = Type.IndirectFloat;
var bitWidth = BitWidthUtil.Width(value);
var byteWidth = Align(bitWidth);
var valueOffset = _offset;
Write(value, byteWidth);
_stack.Add(StackValue.Value(valueOffset, bitWidth, type));
return(type);
}
internal Type Add(byte[] value)
{
var bitWidth = BitWidthUtil.Width(value.Length);
var byteWidth = Align(bitWidth);
Write(value.Length, byteWidth);
var newOffset = NewOffset(value.Length);
var blobOffset = _offset;
Buffer.BlockCopy(value, 0, _bytes, _offset, value.Length);
_offset = newOffset;
_stack.Add(StackValue.Value(blobOffset, bitWidth, Type.Blob));
return(Type.Blob);
}
public BitWidth ElementWidth(ulong size, int index)
{
if (TypesUtil.IsInline(ValueType))
{
return(Width);
}
for (var i = 0; i < 4; i++)
{
var width = (ulong)1 << i;
var offsetLoc = size + BitWidthUtil.PaddingSize(size, width) + (ulong)index * width;
var offset = offsetLoc - UValue;
var bitWidth = BitWidthUtil.Width(offset);
if ((1UL << (byte)bitWidth) == width)
{
return(bitWidth);
}
}
throw new Exception($"Element with size: {size} and index: {index} is of unknown width");
}
private StackValue CreateVector(int start, int vecLen, int step, bool typed, bool fix, StackValue?keys = null)
{
var bitWidth = BitWidthUtil.Width(vecLen);
var prefixElems = 1;
if (keys != null)
{
var elemWidth = keys.Value.ElementWidth(_offset, 0);
if ((int)elemWidth > (int)bitWidth)
{
bitWidth = elemWidth;
}
prefixElems += 2;
}
var vectorType = Type.Key;
for (var i = start; i < _stack.Count; i += step)
{
var elemWidth = _stack[i].ElementWidth(_offset, i + prefixElems);
if ((int)elemWidth > (int)bitWidth)
{
bitWidth = elemWidth;
}
if (typed)
{
if (i == start)
{
vectorType = _stack[i].TypeOfValue;
}
else
{
if (vectorType != _stack[i].TypeOfValue)
{
throw new Exception($"Your typed vector is of type {vectorType} but the item on index {i} is of type {_stack[i].TypeOfValue}");
}
}
}
}
if (TypesUtil.IsTypedVectorElement(vectorType) == false)
{
throw new Exception("Your fixed types are not one of: Int / UInt / Float / Key");
}
var byteWidth = Align(bitWidth);
if (keys != null)
{
Write(keys.Value, byteWidth);
Write(1 << (int)keys.Value.InternalWidth, byteWidth);
}
if (!fix)
{
Write(vecLen, byteWidth);
}
var vloc = _offset;
for (var i = start; i < _stack.Count; i += step)
{
Write(_stack[i], byteWidth);
}
if (!typed)
{
for (var i = start; i < _stack.Count; i += step)
{
Write(_stack[i].StoredPackedType());
}
}
if (keys != null)
{
return(StackValue.Value(vloc, bitWidth, Type.Map));
}
if (typed)
{
var type = TypesUtil.ToTypedVector(vectorType, (byte)(fix ? vecLen : 0));
return(StackValue.Value(vloc, bitWidth, type));
}
return(StackValue.Value(vloc, bitWidth, Type.Vector));
}