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));
}
internal Type Add(bool value)
{
_stack.Add(StackValue.Value(value));
return(Type.Bool);
}
internal Type Add(ulong value)
{
_stack.Add(StackValue.Value(value));
return(Type.Uint);
}
internal Type Add(double value)
{
_stack.Add(StackValue.Value(value));
return(Type.Float);
}
internal Type AddNull()
{
_stack.Add(StackValue.Null());
return(Type.Null);
}