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 <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 TestIterationUChar32()
{
String text = "\u0061\u0062\ud841\udc02\u20ac\ud7ff\ud842\udc06\ud801\udc00\u0061";
int c;
int i;
{
UCharacterIterator iter = UCharacterIterator.GetInstance(text);
String iterText = iter.GetText();
if (!iterText.Equals(text))
{
Errln("iter.getText() failed");
}
iter.Index = (1);
if (iter.CurrentCodePoint != UTF16.CharAt(text, 1))
{
Errln("Iterator didn't start out in the right place.");
}
iter.SetToStart();
c = iter.CurrentCodePoint;
i = 0;
i = iter.MoveCodePointIndex(1);
c = iter.CurrentCodePoint;
if (c != UTF16.CharAt(text, 1) || i != 1)
{
Errln("moveCodePointIndex(1) didn't work correctly expected " + Hex(c) + " got " + Hex(UTF16.CharAt(text, 1)) + " i= " + i);
}
i = iter.MoveCodePointIndex(2);
c = iter.CurrentCodePoint;
if (c != UTF16.CharAt(text, 4) || i != 4)
{
Errln("moveCodePointIndex(2) didn't work correctly expected " + Hex(c) + " got " + Hex(UTF16.CharAt(text, 4)) + " i= " + i);
}
i = iter.MoveCodePointIndex(-2);
c = iter.CurrentCodePoint;
if (c != UTF16.CharAt(text, 1) || i != 1)
{
Errln("moveCodePointIndex(-2) didn't work correctly expected " + Hex(c) + " got " + Hex(UTF16.CharAt(text, 1)) + " i= " + i);
}
iter.SetToLimit();
i = iter.MoveCodePointIndex(-2);
c = iter.CurrentCodePoint;
if (c != UTF16.CharAt(text, (text.Length - 3)) || i != (text.Length - 3))
{
Errln("moveCodePointIndex(-2) didn't work correctly expected " + Hex(c) + " got " + Hex(UTF16.CharAt(text, (text.Length - 3))) + " i= " + i);
}
iter.SetToStart();
c = iter.CurrentCodePoint;
i = 0;
//testing first32PostInc, nextCodePointPostInc, setTostart
i = 0;
iter.SetToStart();
c = iter.Next();
if (c != UTF16.CharAt(text, i))
{
Errln("first32PostInc failed. Expected->" + Hex(UTF16.CharAt(text, i)) + " Got-> " + Hex(c));
}
if (iter.Index != UTF16.GetCharCount(c) + i)
{
Errln("getIndex() after first32PostInc() failed");
}
iter.SetToStart();
i = 0;
if (iter.Index != 0)
{
Errln("setToStart failed");
}
Logln("Testing forward iteration...");
do
{
if (c != UCharacterIterator.DONE)
{
c = iter.NextCodePoint();
}
if (c != UTF16.CharAt(text, i))
{
Errln("Character mismatch at position " + i + ", iterator has " + Hex(c) + ", string has " + Hex(UTF16.CharAt(text, i)));
}
i += UTF16.GetCharCount(c);
if (iter.Index != i)
{
Errln("getIndex() aftr nextCodePointPostInc() isn't working right");
}
c = iter.CurrentCodePoint;
if (c != UCharacterIterator.DONE && c != UTF16.CharAt(text, i))
{
Errln("current() after nextCodePointPostInc() isn't working right");
}
} while (c != UCharacterIterator.DONE);
c = iter.NextCodePoint();
if (c != UCharacterIterator.DONE)
{
Errln("nextCodePointPostInc() didn't return DONE at the beginning");
}
}
}
/// <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());
}
