/// <summary>
/// Creates a rope from the specified input.
/// This operation runs in O(N).
/// </summary>
/// <exception cref="ArgumentNullException">input is null.</exception>
public Rope(IEnumerable <T> input)
{
if (input == null)
{
throw new ArgumentNullException("input");
}
Rope <T> inputRope = input as Rope <T>;
if (inputRope != null)
{
// clone ropes instead of copying them
inputRope.root.Publish();
this.root = inputRope.root;
}
else
{
string text = input as string;
if (text != null)
{
// if a string is IEnumerable<T>, then T must be char
((Rope <char>)(object) this).root = CharRope.InitFromString(text);
}
else
{
T[] arr = ToArray(input);
this.root = RopeNode <T> .CreateFromArray(arr, 0, arr.Length);
}
}
this.root.CheckInvariants();
}
public void ConcatenateSmallRopesToRope()
{
StringBuilder b = new StringBuilder();
Rope <char> rope = new Rope <char>();
for (int i = 1; i <= 1000; i++)
{
b.Append(i.ToString());
b.Append(' ');
rope.AddRange(CharRope.Create(i.ToString() + " "));
}
Assert.AreEqual(b.ToString(), rope.ToString());
}
public void ConcatenateSmallRopesToRopeBackwards()
{
StringBuilder b = new StringBuilder();
Rope <char> rope = new Rope <char>();
for (int i = 1; i <= 1000; i++)
{
b.Append(i.ToString());
b.Append(' ');
}
for (int i = 1000; i >= 1; i--)
{
rope.InsertRange(0, CharRope.Create(i.ToString() + " "));
}
Assert.AreEqual(b.ToString(), rope.ToString());
}
public void ConcatenateSmallRopesByInsertionInMiddle()
{
StringBuilder b = new StringBuilder();
Rope <char> rope = new Rope <char>();
for (int i = 1; i <= 1000; i++)
{
b.Append(i.ToString("d3"));
b.Append(' ');
}
int middle = 0;
for (int i = 1; i <= 500; i++)
{
rope.InsertRange(middle, CharRope.Create(i.ToString("d3") + " "));
middle += 4;
rope.InsertRange(middle, CharRope.Create((1001 - i).ToString("d3") + " "));
}
Assert.AreEqual(b.ToString(), rope.ToString());
}
