@Override
public int matchNext(StackFrameList trace, int matchFrom) {
if (matchFrom > 0) {
// assume that match have been found already
return -1;
}
for (int i = matchFrom; i < trace.depth(); ++i) {
if (matcher.evaluate(trace.frameAt(i))) {
return i;
}
}
return -1;
}
@Override
public boolean evaluate(ThreadSnapshot snapshot) {
int n = -1;
while (true) {
int m = matcher.matchNext(snapshot.stackTrace(), n + 1);
if (m < 0) {
break;
}
n = m;
}
if (n >= 0) {
StackFrameList remained = snapshot.stackTrace();
remained = remained.fragment(0, n);
return tailFilter.evaluate(new ThreadSnapProxy(snapshot, remained));
} else {
return false;
}
}
private StackFrameList mask(StackFrameList stackTrace) {
if (maskingRules.isEmpty()) {
return stackTrace;
} else {
StackFrame[] frames = stackTrace.toArray();
for (int i = 0; i != frames.length; ++i) {
frames[i] = mask(frames[i]);
}
return new StackFrameArray(frames);
}
}