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 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, "");
}
}
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();
}
}
@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
@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);
}
@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
@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;
}
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
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;
}
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 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 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;
}
@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();
}
}
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();
}
}
@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();
}
@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);
}
}
}
}
@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();
}
}