public Get ( int posStart, int length ) : char[] | ||
posStart | int | |
length | int | |
Результат | char[] |
public char[] Get(int posStart, int length)
{
Debug.Assert(length > 0);
Debug.Assert(InBounds(posStart), "posStart=" + posStart + " length=" + length);
//System.out.println(" buffer.Get posStart=" + posStart + " len=" + length);
int startIndex = GetIndex(posStart);
int endIndex = GetIndex(posStart + length);
//System.out.println(" startIndex=" + startIndex + " endIndex=" + endIndex);
var result = new char[length];
if (endIndex >= startIndex && length < buffer.Length)
{
Array.Copy(buffer, startIndex, result, 0, endIndex - startIndex);
}
else
{
// Wrapped:
int part1 = buffer.Length - startIndex;
Array.Copy(buffer, startIndex, result, 0, part1);
Array.Copy(buffer, 0, result, buffer.Length - startIndex, length - part1);
}
return result;
}
RollingCharBuffer::Get ( int pos ) : int |
public virtual void Test() { int ITERS; // LUCENENET specific: NUnit will crash with an OOM if we do the full test // with verbosity enabled. So, decreasing the number of iterations by 1/2 // to keep it from crashing. if (Verbose) { ITERS = AtLeast(500); } else { ITERS = AtLeast(1000); } var buffer = new RollingCharBuffer(); var random = LuceneTestCase.Random; for (var iter = 0; iter < ITERS; iter++) { var stringLen = random.NextBoolean() ? random.Next(50) : random.Next(20000); string s; if (stringLen == 0) { s = ""; } else { s = TestUtil.RandomUnicodeString(random, stringLen); } if (Verbose) { Console.WriteLine("\nTEST: iter=" + iter + " s.length()=" + s.Length); } buffer.Reset(new StringReader(s)); var nextRead = 0; var availCount = 0; while (nextRead < s.Length) { if (Verbose) { Console.WriteLine(" cycle nextRead=" + nextRead + " avail=" + availCount); } if (availCount == 0 || random.NextBoolean()) { // Read next char if (Verbose) { Console.WriteLine(" new char"); } assertEquals(s[nextRead], buffer.Get(nextRead)); nextRead++; availCount++; } else if (random.NextBoolean()) { // Read previous char var pos = TestUtil.NextInt32(random, nextRead - availCount, nextRead - 1); if (Verbose) { Console.WriteLine(" old char pos=" + pos); } assertEquals(s[pos], buffer.Get(pos)); } else { // Read slice int length; if (availCount == 1) { length = 1; } else { length = TestUtil.NextInt32(random, 1, availCount); } int start; if (length == availCount) { start = nextRead - availCount; } else { start = nextRead - availCount + random.Next(availCount - length); } if (Verbose) { Console.WriteLine(" slice start=" + start + " length=" + length); } assertEquals(s.Substring(start, length), new string(buffer.Get(start, length))); } if (availCount > 0 && random.Next(20) == 17) { var toFree = random.Next(availCount); if (Verbose) { Console.WriteLine(" free " + toFree + " (avail=" + (availCount - toFree) + ")"); } buffer.FreeBefore(nextRead - (availCount - toFree)); availCount -= toFree; } } } }