private static int addToUsages(
@NotNull Document document,
@NotNull Processor<UsageInfo> consumer,
@NotNull FindModel findModel,
@NotNull final PsiFile psiFile,
@NotNull int[] offsetRef,
int maxUsages) {
int count = 0;
CharSequence text = document.getCharsSequence();
int textLength = document.getTextLength();
int offset = offsetRef[0];
Project project = psiFile.getProject();
FindManager findManager = FindManager.getInstance(project);
while (offset < textLength) {
FindResult result = findManager.findString(text, offset, findModel, psiFile.getVirtualFile());
if (!result.isStringFound()) break;
final SearchScope customScope = findModel.getCustomScope();
if (customScope instanceof LocalSearchScope) {
final TextRange range = new TextRange(result.getStartOffset(), result.getEndOffset());
if (!((LocalSearchScope) customScope).containsRange(psiFile, range)) break;
}
UsageInfo info = new FindResultUsageInfo(findManager, psiFile, offset, findModel, result);
if (!consumer.process(info)) {
throw new ProcessCanceledException();
}
count++;
final int prevOffset = offset;
offset = result.getEndOffset();
if (prevOffset == offset) {
// for regular expr the size of the match could be zero -> could be infinite loop in finding
// usages!
++offset;
}
if (maxUsages > 0 && count >= maxUsages) {
break;
}
}
offsetRef[0] = offset;
return count;
}
