public static IEnumerable<ISymbolicExpressionTreeNode> FindMatches(ISymbolicExpressionTreeNode root, ISymbolicExpressionTreeNode subtree, SymbolicExpressionTreeNodeEqualityComparer comp) {
var fragmentLength = subtree.GetLength();
// below, we use ">=" for Match(n, subtree, comp) >= fragmentLength because in case of relaxed conditions,
// we can have multiple matches of the same node
return root.IterateNodesBreadth().Where(n => n.GetLength() >= fragmentLength && Match(n, subtree, comp) == fragmentLength);
}
public IEnumerable <ISymbolicExpressionTreeNode> IterateNodesBreadth()
{
if (root == null)
{
return(Enumerable.Empty <SymbolicExpressionTreeNode>());
}
return(root.IterateNodesBreadth());
}
public static IEnumerable <ISymbolicExpressionTreeNode> FindMatches(ISymbolicExpressionTreeNode root, ISymbolicExpressionTreeNode subtree, SymbolicExpressionTreeNodeEqualityComparer comp)
{
var fragmentLength = subtree.GetLength();
// below, we use ">=" for Match(n, subtree, comp) >= fragmentLength because in case of relaxed conditions,
// we can have multiple matches of the same node
return(root.IterateNodesBreadth().Where(n => n.GetLength() >= fragmentLength && Match(n, subtree, comp) == fragmentLength));
}
private void contextMenuStrip_Opened(object sender, EventArgs e)
{
var menuStrip = (ContextMenuStrip)sender;
var point = menuStrip.SourceControl.PointToClient(Cursor.Position);
var ea = new MouseEventArgs(MouseButtons.Left, 1, point.X, point.Y, 0);
var visualNode = FindVisualSymbolicExpressionTreeNodeAt(ea.X, ea.Y);
if (visualNode != null)
{
OnSymbolicExpressionTreeNodeClicked(visualNode, ea);
}
else
{
currSelected = null;
}
if (currSelected == null)
{
insertNodeToolStripMenuItem.Visible = false;
changeNodeToolStripMenuItem.Visible = false;
copyToolStripMenuItem.Visible = false;
cutToolStripMenuItem.Visible = false;
removeToolStripMenuItem.Visible = false;
pasteToolStripMenuItem.Visible = false;
}
else
{
var node = currSelected.Content;
insertNodeToolStripMenuItem.Visible = true;
changeNodeToolStripMenuItem.Visible = true;
changeNodeToolStripMenuItem.Enabled = (node is SymbolicExpressionTreeTerminalNode);
insertNodeToolStripMenuItem.Enabled = !changeNodeToolStripMenuItem.Enabled;
copyToolStripMenuItem.Visible = true;
cutToolStripMenuItem.Visible = true;
removeToolStripMenuItem.Visible = true;
pasteToolStripMenuItem.Visible = true;
pasteToolStripMenuItem.Enabled = tempNode != null && insertNodeToolStripMenuItem.Enabled &&
!(lastOp == EditOp.CutSubtree && tempNode.IterateNodesBreadth().Contains(node)) &&
node.SubtreeCount < node.Symbol.MaximumArity;
}
}
