@Override
@Nullable
public PsiElement restoreElement() {
long typeAndId = myStubElementTypeAndId;
int stubId = (int) typeAndId;
if (stubId != -1) {
PsiFile file = restoreFile();
if (!(file instanceof PsiFileWithStubSupport)) return null;
short index = (short) (typeAndId >> 32);
IStubElementType stubElementType = (IStubElementType) IElementType.find(index);
return PsiAnchor.restoreFromStubIndex(
(PsiFileWithStubSupport) file, stubId, stubElementType, false);
}
Segment psiRange = getPsiRange();
if (psiRange == null) return null;
PsiFile file = restoreFile();
if (file == null) return null;
PsiElement anchor = file.findElementAt(psiRange.getStartOffset());
if (anchor == null) return null;
TextRange range = anchor.getTextRange();
if (range.getStartOffset() != psiRange.getStartOffset()
|| range.getEndOffset() != psiRange.getEndOffset()) return null;
for (SmartPointerAnchorProvider provider : SmartPointerAnchorProvider.EP_NAME.getExtensions()) {
final PsiElement element = provider.restoreElement(anchor);
if (element != null) return element;
}
return null;
}
public int hostToInjectedUnescaped(int hostOffset) {
synchronized (myLock) {
Segment hostRangeMarker = myShreds.get(0).getHostRangeMarker();
if (hostRangeMarker == null || hostOffset < hostRangeMarker.getStartOffset())
return myShreds.get(0).getPrefix().length();
int offset = 0;
for (int i = 0; i < myShreds.size(); i++) {
offset += myShreds.get(i).getPrefix().length();
Segment currentRange = myShreds.get(i).getHostRangeMarker();
if (currentRange == null) continue;
Segment nextRange =
i == myShreds.size() - 1 ? null : myShreds.get(i + 1).getHostRangeMarker();
if (nextRange == null || hostOffset < nextRange.getStartOffset()) {
if (hostOffset >= currentRange.getEndOffset()) {
offset += myShreds.get(i).getRange().getLength();
} else {
// todo use escaper to convert host-range delta into injected space
offset += hostOffset - currentRange.getStartOffset();
}
return offset;
}
offset += myShreds.get(i).getRange().getLength();
offset += myShreds.get(i).getSuffix().length();
}
return getTextLength() - myShreds.get(myShreds.size() - 1).getSuffix().length();
}
}
private int injectedToHost(int offset, boolean preferLeftFragment) {
synchronized (myLock) {
if (offset < myShreds.get(0).getPrefix().length()) {
Segment hostRangeMarker = myShreds.get(0).getHostRangeMarker();
return hostRangeMarker == null ? 0 : hostRangeMarker.getStartOffset();
}
int prevEnd = 0;
for (int i = 0; i < myShreds.size(); i++) {
Segment currentRange = myShreds.get(i).getHostRangeMarker();
if (currentRange == null) continue;
offset -= myShreds.get(i).getPrefix().length();
int length = currentRange.getEndOffset() - currentRange.getStartOffset();
if (offset < 0) {
return preferLeftFragment ? prevEnd : currentRange.getStartOffset() - 1;
}
if (offset == 0) {
return preferLeftFragment && i != 0 ? prevEnd : currentRange.getStartOffset();
}
if (offset < length || offset == length && preferLeftFragment) {
return currentRange.getStartOffset() + offset;
}
offset -= length;
offset -= myShreds.get(i).getSuffix().length();
prevEnd = currentRange.getEndOffset();
}
Segment hostRangeMarker = myShreds.get(myShreds.size() - 1).getHostRangeMarker();
return hostRangeMarker == null ? 0 : hostRangeMarker.getEndOffset();
}
}
private void doReplaceString(int startOffset, int endOffset, CharSequence s) {
assert intersectWithEditable(new TextRange(startOffset, startOffset)) != null;
assert intersectWithEditable(new TextRange(endOffset, endOffset)) != null;
List<Pair<TextRange, CharSequence>> hostRangesToModify;
synchronized (myLock) {
hostRangesToModify = new ArrayList<Pair<TextRange, CharSequence>>(myShreds.size());
int offset = startOffset;
int curRangeStart = 0;
for (int i = 0; i < myShreds.size(); i++) {
PsiLanguageInjectionHost.Shred shred = myShreds.get(i);
curRangeStart += shred.getPrefix().length();
if (offset < curRangeStart) offset = curRangeStart;
Segment hostRange = shred.getHostRangeMarker();
if (hostRange == null) continue;
int hostRangeLength = hostRange.getEndOffset() - hostRange.getStartOffset();
TextRange range = TextRange.from(curRangeStart, hostRangeLength);
if (range.contains(offset)
|| range.getEndOffset() == offset /* in case of inserting at the end*/) {
TextRange rangeToModify =
new TextRange(offset, Math.min(range.getEndOffset(), endOffset));
TextRange hostRangeToModify =
rangeToModify.shiftRight(hostRange.getStartOffset() - curRangeStart);
CharSequence toReplace =
i == myShreds.size() - 1
|| range.getEndOffset() + shred.getSuffix().length() >= endOffset
? s
: s.subSequence(0, Math.min(hostRangeToModify.getLength(), s.length()));
s = toReplace == s ? "" : s.subSequence(toReplace.length(), s.length());
hostRangesToModify.add(Pair.create(hostRangeToModify, toReplace));
offset = rangeToModify.getEndOffset();
}
curRangeStart += hostRangeLength;
curRangeStart += shred.getSuffix().length();
if (curRangeStart > endOffset) break;
}
}
int delta = 0;
for (Pair<TextRange, CharSequence> pair : hostRangesToModify) {
TextRange hostRange = pair.getFirst();
CharSequence replace = pair.getSecond();
myDelegate.replaceString(
hostRange.getStartOffset() + delta, hostRange.getEndOffset() + delta, replace);
delta -= hostRange.getLength() - replace.length();
}
}
@Nullable("null means we were unable to calculate")
LogicalPosition hostToInjectedInVirtualSpace(@NotNull LogicalPosition hPos) {
// beware the virtual space
int hLineStartOffset =
hPos.line >= myDelegate.getLineCount()
? myDelegate.getTextLength()
: myDelegate.getLineStartOffset(hPos.line);
int iLineStartOffset = hostToInjected(hLineStartOffset);
int iLine = getLineNumber(iLineStartOffset);
synchronized (myLock) {
for (int i = myShreds.size() - 1; i >= 0; i--) {
PsiLanguageInjectionHost.Shred shred = myShreds.get(i);
if (!shred.isValid()) continue;
Segment hostRangeMarker = shred.getHostRangeMarker();
if (hostRangeMarker == null) continue;
int hShredEndOffset = hostRangeMarker.getEndOffset();
int hShredStartOffset = hostRangeMarker.getStartOffset();
int hShredStartLine = myDelegate.getLineNumber(hShredStartOffset);
int hShredEndLine = myDelegate.getLineNumber(hShredEndOffset);
if (hShredStartLine <= hPos.line && hPos.line <= hShredEndLine) {
int hColumnOfShredEnd = hShredEndOffset - hLineStartOffset;
int iColumnOfShredEnd = hostToInjected(hShredEndOffset) - iLineStartOffset;
int iColumn = iColumnOfShredEnd + hPos.column - hColumnOfShredEnd;
return new LogicalPosition(iLine, iColumn);
}
}
}
return null;
}
@Override
@Deprecated
@Nullable
public TextRange intersectWithEditable(@NotNull TextRange rangeToEdit) {
int startOffset = -1;
int endOffset = -1;
synchronized (myLock) {
int offset = 0;
for (PsiLanguageInjectionHost.Shred shred : myShreds) {
Segment hostRange = shred.getHostRangeMarker();
if (hostRange == null) continue;
offset += shred.getPrefix().length();
int length = hostRange.getEndOffset() - hostRange.getStartOffset();
TextRange intersection =
new ProperTextRange(offset, offset + length).intersection(rangeToEdit);
if (intersection != null) {
if (startOffset == -1) {
startOffset = intersection.getStartOffset();
}
endOffset = intersection.getEndOffset();
}
offset += length;
offset += shred.getSuffix().length();
}
}
if (startOffset == -1) return null;
return new ProperTextRange(startOffset, endOffset);
}
@Override
public boolean pointsToTheSameElementAs(@NotNull final SmartPointerElementInfo other) {
if (other instanceof SelfElementInfo) {
SelfElementInfo otherInfo = (SelfElementInfo) other;
if (!getVirtualFile().equals(other.getVirtualFile()) || myType != otherInfo.myType)
return false;
Segment range1 = getPsiRange();
Segment range2 = otherInfo.getPsiRange();
return range1 != null
&& range2 != null
&& range1.getStartOffset() == range2.getStartOffset()
&& range1.getEndOffset() == range2.getEndOffset();
}
return areRestoredElementsEqual(other);
}
private void initGuardedBlocks(Place shreds) {
int origOffset = -1;
int curOffset = 0;
for (PsiLanguageInjectionHost.Shred shred : shreds) {
Segment hostRangeMarker = shred.getHostRangeMarker();
int start = shred.getRange().getStartOffset() + shred.getPrefix().length();
int end = shred.getRange().getEndOffset() - shred.getSuffix().length();
if (curOffset < start) {
RangeMarker guard = myNewDocument.createGuardedBlock(curOffset, start);
if (curOffset == 0 && shred == shreds.get(0)) guard.setGreedyToLeft(true);
String padding =
origOffset < 0
? ""
: myOrigDocument.getText().substring(origOffset, hostRangeMarker.getStartOffset());
guard.putUserData(REPLACEMENT_KEY, fixQuotes(padding));
}
curOffset = end;
origOffset = hostRangeMarker.getEndOffset();
}
if (curOffset < myNewDocument.getTextLength()) {
RangeMarker guard =
myNewDocument.createGuardedBlock(curOffset, myNewDocument.getTextLength());
guard.setGreedyToRight(true);
guard.putUserData(REPLACEMENT_KEY, "");
}
}
@Override
public void selectInEditor() {
if (!isValid()) return;
Editor editor = openTextEditor(true);
Segment marker = getFirstSegment();
editor.getSelectionModel().setSelection(marker.getStartOffset(), marker.getEndOffset());
}
@Override
public int getLineStartOffset(int line) {
LOG.assertTrue(line >= 0, line);
if (line == 0) return 0;
String hostText = myDelegate.getText();
int[] pos = new int[2]; // pos[0] = curLine; pos[1] == offset;
synchronized (myLock) {
for (PsiLanguageInjectionHost.Shred shred : myShreds) {
Segment hostRange = shred.getHostRangeMarker();
if (hostRange == null) continue;
int found = countNewLinesIn(shred.getPrefix(), pos, line);
if (found != -1) return found;
CharSequence text =
hostText.subSequence(hostRange.getStartOffset(), hostRange.getEndOffset());
found = countNewLinesIn(text, pos, line);
if (found != -1) return found;
found = countNewLinesIn(shred.getSuffix(), pos, line);
if (found != -1) return found;
}
}
return pos[1];
}
@Override
public void highlightInEditor() {
if (!isValid()) return;
Segment marker = getFirstSegment();
SelectInEditorManager.getInstance(getProject())
.selectInEditor(getFile(), marker.getStartOffset(), marker.getEndOffset(), false, false);
}
void setRange(@Nullable Segment range) {
if (range != null) {
myStartOffset = range.getStartOffset();
myEndOffset = range.getEndOffset();
} else {
myStartOffset = -1;
myEndOffset = -1;
}
}
@Override
public PsiElement restoreElement() {
Segment segment = getPsiRange();
if (segment == null) return null;
PsiFile file = restoreFile();
if (file == null || !file.isValid()) return null;
return findElementInside(file, segment.getStartOffset(), segment.getEndOffset(), myType);
}
@Override
@Nullable
public FileEditorLocation getLocation() {
VirtualFile virtualFile = getFile();
if (virtualFile == null) return null;
FileEditor editor = FileEditorManager.getInstance(getProject()).getSelectedEditor(virtualFile);
if (!(editor instanceof TextEditor)) return null;
Segment segment = getUsageInfo().getSegment();
if (segment == null) return null;
return new TextEditorLocation(segment.getStartOffset(), (TextEditor) editor);
}
private String getRangeText(@NotNull String hostText, int hostNum) {
synchronized (myLock) {
PsiLanguageInjectionHost.Shred shred = myShreds.get(hostNum);
Segment hostRangeMarker = shred.getHostRangeMarker();
return shred.getPrefix()
+ (hostRangeMarker == null
? ""
: hostText.substring(
hostRangeMarker.getStartOffset(), hostRangeMarker.getEndOffset()))
+ shred.getSuffix();
}
}
@Override
public boolean areRangesEqual(@NotNull DocumentWindow otherd) {
DocumentWindowImpl window = (DocumentWindowImpl) otherd;
Place shreds = getShreds();
Place otherShreds = window.getShreds();
if (shreds.size() != otherShreds.size()) return false;
for (int i = 0; i < shreds.size(); i++) {
PsiLanguageInjectionHost.Shred shred = shreds.get(i);
PsiLanguageInjectionHost.Shred otherShred = otherShreds.get(i);
if (!shred.getPrefix().equals(otherShred.getPrefix())) return false;
if (!shred.getSuffix().equals(otherShred.getSuffix())) return false;
Segment hostRange = shred.getHostRangeMarker();
Segment other = otherShred.getHostRangeMarker();
if (hostRange == null
|| other == null
|| hostRange.getStartOffset() != other.getStartOffset()) return false;
if (hostRange.getEndOffset() != other.getEndOffset()) return false;
}
return true;
}
@Override
public int getLineNumber(int offset) {
int lineNumber = 0;
String hostText = myDelegate.getText();
synchronized (myLock) {
for (PsiLanguageInjectionHost.Shred shred : myShreds) {
String prefix = shred.getPrefix();
String suffix = shred.getSuffix();
lineNumber +=
StringUtil.getLineBreakCount(prefix.substring(0, Math.min(offset, prefix.length())));
if (offset < prefix.length()) {
return lineNumber;
}
offset -= prefix.length();
Segment currentRange = shred.getHostRangeMarker();
if (currentRange == null) continue;
int rangeLength = currentRange.getEndOffset() - currentRange.getStartOffset();
CharSequence rangeText =
hostText.subSequence(currentRange.getStartOffset(), currentRange.getEndOffset());
lineNumber +=
StringUtil.getLineBreakCount(rangeText.subSequence(0, Math.min(offset, rangeLength)));
if (offset < rangeLength) {
return lineNumber;
}
offset -= rangeLength;
lineNumber +=
StringUtil.getLineBreakCount(suffix.substring(0, Math.min(offset, suffix.length())));
if (offset < suffix.length()) {
return lineNumber;
}
offset -= suffix.length();
}
}
lineNumber = getLineCount() - 1;
return lineNumber < 0 ? 0 : lineNumber;
}
@Override
public Element export(
@NotNull RefEntity refEntity, @NotNull final Element element, final int actualLine) {
refEntity = getRefinedElement(refEntity);
Element problem = new Element("problem");
if (refEntity instanceof RefElement) {
final RefElement refElement = (RefElement) refEntity;
final SmartPsiElementPointer pointer = refElement.getPointer();
PsiFile psiFile = pointer.getContainingFile();
if (psiFile == null) return null;
Element fileElement = new Element("file");
Element lineElement = new Element("line");
final VirtualFile virtualFile = psiFile.getVirtualFile();
LOG.assertTrue(virtualFile != null);
fileElement.addContent(virtualFile.getUrl());
if (actualLine == -1) {
final Document document =
PsiDocumentManager.getInstance(pointer.getProject()).getDocument(psiFile);
LOG.assertTrue(document != null);
final Segment range = pointer.getRange();
lineElement.addContent(
String.valueOf(
range != null ? document.getLineNumber(range.getStartOffset()) + 1 : -1));
} else {
lineElement.addContent(String.valueOf(actualLine));
}
problem.addContent(fileElement);
problem.addContent(lineElement);
appendModule(problem, refElement.getModule());
} else if (refEntity instanceof RefModule) {
final RefModule refModule = (RefModule) refEntity;
final VirtualFile moduleFile = refModule.getModule().getModuleFile();
final Element fileElement = new Element("file");
fileElement.addContent(moduleFile != null ? moduleFile.getUrl() : refEntity.getName());
problem.addContent(fileElement);
appendModule(problem, refModule);
}
for (RefManagerExtension extension : myExtensions.values()) {
extension.export(refEntity, problem);
}
new SmartRefElementPointerImpl(refEntity, true).writeExternal(problem);
element.addContent(problem);
return problem;
}
@Override
public void deleteString(final int startOffset, final int endOffset) {
assert intersectWithEditable(new TextRange(startOffset, startOffset)) != null;
assert intersectWithEditable(new TextRange(endOffset, endOffset)) != null;
List<TextRange> hostRangesToDelete;
synchronized (myLock) {
hostRangesToDelete = new ArrayList<TextRange>(myShreds.size());
int offset = startOffset;
int curRangeStart = 0;
for (PsiLanguageInjectionHost.Shred shred : myShreds) {
curRangeStart += shred.getPrefix().length();
if (offset < curRangeStart) offset = curRangeStart;
if (offset >= endOffset) break;
Segment hostRange = shred.getHostRangeMarker();
if (hostRange == null) continue;
int hostRangeLength = hostRange.getEndOffset() - hostRange.getStartOffset();
TextRange range = TextRange.from(curRangeStart, hostRangeLength);
if (range.contains(offset)) {
TextRange rangeToDelete =
new TextRange(offset, Math.min(range.getEndOffset(), endOffset));
hostRangesToDelete.add(
rangeToDelete.shiftRight(hostRange.getStartOffset() - curRangeStart));
offset = rangeToDelete.getEndOffset();
}
curRangeStart += hostRangeLength;
curRangeStart += shred.getSuffix().length();
}
}
int delta = 0;
for (TextRange hostRangeToDelete : hostRangesToDelete) {
myDelegate.deleteString(
hostRangeToDelete.getStartOffset() + delta, hostRangeToDelete.getEndOffset() + delta);
delta -= hostRangeToDelete.getLength();
}
}
// by start offset
@Override
public int compareTo(final UsageInfo2UsageAdapter o) {
VirtualFile containingFile = getFile();
int shift1 = 0;
if (containingFile instanceof VirtualFileWindow) {
shift1 = ((VirtualFileWindow) containingFile).getDocumentWindow().injectedToHost(0);
containingFile = ((VirtualFileWindow) containingFile).getDelegate();
}
VirtualFile oContainingFile = o.getFile();
int shift2 = 0;
if (oContainingFile instanceof VirtualFileWindow) {
shift2 = ((VirtualFileWindow) oContainingFile).getDocumentWindow().injectedToHost(0);
oContainingFile = ((VirtualFileWindow) oContainingFile).getDelegate();
}
if (containingFile == null && oContainingFile == null
|| !Comparing.equal(containingFile, oContainingFile)) {
return 0;
}
Segment s1 = getFirstSegment();
Segment s2 = o.getFirstSegment();
if (s1 == null || s2 == null) return 0;
return s1.getStartOffset() + shift1 - s2.getStartOffset() - shift2;
}
@Override
public int hostToInjected(int hostOffset) {
synchronized (myLock) {
Segment hostRangeMarker = myShreds.get(0).getHostRangeMarker();
if (hostRangeMarker == null || hostOffset < hostRangeMarker.getStartOffset())
return myShreds.get(0).getPrefix().length();
int offset = 0;
for (int i = 0; i < myShreds.size(); i++) {
offset += myShreds.get(i).getPrefix().length();
Segment currentRange = myShreds.get(i).getHostRangeMarker();
if (currentRange == null) continue;
Segment nextRange =
i == myShreds.size() - 1 ? null : myShreds.get(i + 1).getHostRangeMarker();
if (nextRange == null || hostOffset < nextRange.getStartOffset()) {
if (hostOffset >= currentRange.getEndOffset()) hostOffset = currentRange.getEndOffset();
return offset + hostOffset - currentRange.getStartOffset();
}
offset += currentRange.getEndOffset() - currentRange.getStartOffset();
offset += myShreds.get(i).getSuffix().length();
}
return getTextLength() - myShreds.get(myShreds.size() - 1).getSuffix().length();
}
}
@Override
public int getTextLength() {
int length = 0;
synchronized (myLock) {
for (PsiLanguageInjectionHost.Shred shred : myShreds) {
Segment hostRange = shred.getHostRangeMarker();
if (hostRange == null) continue;
length += shred.getPrefix().length();
length += hostRange.getEndOffset() - hostRange.getStartOffset();
length += shred.getSuffix().length();
}
}
return length;
}
@NotNull
private String calcText() {
StringBuilder text = new StringBuilder();
CharSequence hostText = myDelegate.getCharsSequence();
synchronized (myLock) {
for (PsiLanguageInjectionHost.Shred shred : myShreds) {
Segment hostRange = shred.getHostRangeMarker();
if (hostRange != null) {
text.append(shred.getPrefix());
text.append(hostText, hostRange.getStartOffset(), hostRange.getEndOffset());
text.append(shred.getSuffix());
}
}
}
return text.toString();
}
@NotNull
@Override
public List<TextRange> getNonEditableFragments(@NotNull DocumentWindow window) {
List<TextRange> result = ContainerUtil.newArrayList();
int offset = 0;
for (PsiLanguageInjectionHost.Shred shred : ((DocumentWindowImpl) window).getShreds()) {
Segment hostRange = shred.getHostRangeMarker();
if (hostRange == null) continue;
offset = appendRange(result, offset, shred.getPrefix().length());
offset += hostRange.getEndOffset() - hostRange.getStartOffset();
offset = appendRange(result, offset, shred.getSuffix().length());
}
return result;
}
public static void renameNonCodeUsages(
@NotNull Project project, @NotNull NonCodeUsageInfo[] usages) {
PsiDocumentManager.getInstance(project).commitAllDocuments();
Map<Document, List<UsageOffset>> docsToOffsetsMap = new HashMap<Document, List<UsageOffset>>();
final PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(project);
for (NonCodeUsageInfo usage : usages) {
PsiElement element = usage.getElement();
if (element == null) continue;
element = CodeInsightUtilBase.forcePsiPostprocessAndRestoreElement(element, true);
if (element == null) continue;
final ProperTextRange rangeInElement = usage.getRangeInElement();
if (rangeInElement == null) continue;
final PsiFile containingFile = element.getContainingFile();
final Document document = psiDocumentManager.getDocument(containingFile);
final Segment segment = usage.getSegment();
LOG.assertTrue(segment != null);
int fileOffset = segment.getStartOffset();
List<UsageOffset> list = docsToOffsetsMap.get(document);
if (list == null) {
list = new ArrayList<UsageOffset>();
docsToOffsetsMap.put(document, list);
}
list.add(new UsageOffset(fileOffset, fileOffset + rangeInElement.getLength(), usage.newText));
}
for (Document document : docsToOffsetsMap.keySet()) {
List<UsageOffset> list = docsToOffsetsMap.get(document);
LOG.assertTrue(list != null, document);
UsageOffset[] offsets = list.toArray(new UsageOffset[list.size()]);
Arrays.sort(offsets);
for (int i = offsets.length - 1; i >= 0; i--) {
UsageOffset usageOffset = offsets[i];
document.replaceString(usageOffset.startOffset, usageOffset.endOffset, usageOffset.newText);
}
PsiDocumentManager.getInstance(project).commitDocument(document);
}
PsiDocumentManager.getInstance(project).commitAllDocuments();
}
@Override
public int injectedToHostLine(int line) {
if (line < myPrefixLineCount) {
synchronized (myLock) {
Segment hostRangeMarker = myShreds.get(0).getHostRangeMarker();
return hostRangeMarker == null
? 0
: myDelegate.getLineNumber(hostRangeMarker.getStartOffset());
}
}
int lineCount = getLineCount();
if (line > lineCount - mySuffixLineCount) {
return lineCount;
}
int offset = getLineStartOffset(line);
int hostOffset = injectedToHost(offset);
return myDelegate.getLineNumber(hostOffset);
}
@Override
public void setText(@NotNull CharSequence text) {
synchronized (myLock) {
LOG.assertTrue(text.toString().startsWith(myShreds.get(0).getPrefix()));
LOG.assertTrue(text.toString().endsWith(myShreds.get(myShreds.size() - 1).getSuffix()));
if (isOneLine()) {
text = StringUtil.replace(text.toString(), "\n", "");
}
String[] changes = calculateMinEditSequence(text.toString());
assert changes.length == myShreds.size();
for (int i = 0; i < changes.length; i++) {
String change = changes[i];
if (change != null) {
Segment hostRange = myShreds.get(i).getHostRangeMarker();
if (hostRange == null) continue;
myDelegate.replaceString(hostRange.getStartOffset(), hostRange.getEndOffset(), change);
}
}
}
}
public int hashCode() {
synchronized (myLock) {
Segment hostRangeMarker = myShreds.get(0).getHostRangeMarker();
return hostRangeMarker == null ? -1 : hostRangeMarker.getStartOffset();
}
}