public override void ComputeLastPos(RegexpBuilder bld)
{
Left.ComputeLastPos(bld);
Right.ComputeLastPos(bld);
LastPos = (BitArray) Right.LastPos.Clone();
if (Right.Nullable)
{
LastPos.Or(Left.LastPos);
}
}
public override void ComputeFollowPos(RegexpBuilder bld)
{
Left.ComputeFollowPos(bld);
Right.ComputeFollowPos(bld);
FollowPos = new BitArray(0);
for (int i = 0; i != Left.LastPos.Length; ++i)
{
if (!Left.LastPos.Get(i))
continue;
ByteNode ii = (ByteNode) bld.positions[i];
ii.FollowPos.Or(Right.FirstPos);
}
}
public override void ComputeFollowPos(RegexpBuilder bld)
{
node.ComputeFollowPos(bld);
FollowPos = node.FollowPos;
for (int i = 0; i != LastPos.Length; ++i)
{
if (!LastPos[i])
continue;
ByteNode ii = (ByteNode) bld.positions[i];
ii.FollowPos.Or(FirstPos);
}
}
public override void ComputeFirstPos(RegexpBuilder bld)
{
Left.ComputeFirstPos(bld);
Right.ComputeFirstPos(bld);
FirstPos = (BitArray) Left.FirstPos.Clone();
if (Left.Nullable)
{
FirstPos.Or(Right.FirstPos);
}
}
public override void ComputeFollowPos(RegexpBuilder b)
{
Left.ComputeFollowPos(b);
Right.ComputeFollowPos(b);
FollowPos = (BitArray)Left.FollowPos.Clone();
FollowPos.Or(Right.FollowPos);
}
public override void ComputeLastPos(RegexpBuilder bld)
{
node.ComputeLastPos(bld);
LastPos = (BitArray) node.LastPos.Clone();
}
public override void ComputeLastPos(RegexpBuilder bld)
{
Left.ComputeLastPos(bld);
Right.ComputeLastPos(bld);
LastPos = (BitArray)Left.FirstPos.Clone();
LastPos.Or(Right.LastPos);
}
public override void ComputeFollowPos(RegexpBuilder b)
{
FollowPos = new BitArray(b.positions.Count);
}
public override void ComputeLastPos(RegexpBuilder bld)
{
LastPos = new BitArray(bld.positions.Count);
LastPos.Set(Position, true);
}
public abstract void ComputeFollowPos(RegexpBuilder bld);
public abstract void ComputeLastPos(RegexpBuilder bld);
