/// <summary>
/// Sets the position to <see cref="EndIndex"/>-1 (<see cref="EndIndex"/> if the text is empty)
/// and returns the character at that position.
/// </summary>
/// <returns>The last character in the text, or <see cref="UCharacterIterator.Done"/> if the text is empty.</returns>
/// <seealso cref="EndIndex"/>
public override char Last()
{
iterator.SetToLimit();
return((char)iterator.Previous());
}
public void TestIteration()
{
UCharacterIterator iterator = UCharacterIterator.GetInstance(
ITERATION_STRING_);
UCharacterIterator iterator2 = UCharacterIterator.GetInstance(
ITERATION_STRING_);
iterator.SetToStart();
if (iterator.Current != ITERATION_STRING_[0])
{
Errln("Iterator failed retrieving first character");
}
iterator.SetToLimit();
if (iterator.Previous() != ITERATION_STRING_[
ITERATION_STRING_.Length - 1])
{
Errln("Iterator failed retrieving last character");
}
if (iterator.Length != ITERATION_STRING_.Length)
{
Errln("Iterator failed determining begin and end index");
}
iterator2.Index = 0;
iterator.Index = 0;
int ch = 0;
while (ch != UCharacterIterator.DONE)
{
int index = iterator2.Index;
ch = iterator2.NextCodePoint();
if (index != ITERATION_SUPPLEMENTARY_INDEX)
{
if (ch != iterator.Next() &&
ch != UCharacterIterator.DONE)
{
Errln("Error mismatch in next() and nextCodePoint()");
}
}
else
{
if (UTF16.GetLeadSurrogate(ch) != iterator.Next() ||
UTF16.GetTrailSurrogate(ch) != iterator.Next())
{
Errln("Error mismatch in next and nextCodePoint for " +
"supplementary characters");
}
}
}
iterator.Index = ITERATION_STRING_.Length;
iterator2.Index = ITERATION_STRING_.Length;
while (ch != UCharacterIterator.DONE)
{
int index = iterator2.Index;
ch = iterator2.PreviousCodePoint();
if (index != ITERATION_SUPPLEMENTARY_INDEX)
{
if (ch != iterator.Previous() &&
ch != UCharacterIterator.DONE)
{
Errln("Error mismatch in previous() and " +
"previousCodePoint()");
}
}
else
{
if (UTF16.GetLeadSurrogate(ch) != iterator.Previous() ||
UTF16.GetTrailSurrogate(ch) != iterator.Previous())
{
Errln("Error mismatch in previous and " +
"previousCodePoint for supplementary characters");
}
}
}
}
/// <summary>
/// Sets the position to getEndIndex()-1 (getEndIndex() if the text is empty)
/// and returns the character at that position.
/// </summary>
///
/// <returns>the last character in the text, or DONE if the text is empty</returns>
/// <seealso cref="M:IBM.ICU.Impl.UCharacterIteratorWrapper.GetEndIndex"/>
public virtual char Last()
{
iterator.SetToLimit();
return((char)iterator.Previous());
}
