public void initMarkers(Place shreds) {
SmartPointerManager smartPointerManager = SmartPointerManager.getInstance(myProject);
int curOffset = -1;
for (PsiLanguageInjectionHost.Shred shred : shreds) {
final RangeMarker rangeMarker =
myNewDocument.createRangeMarker(
shred.getRange().getStartOffset() + shred.getPrefix().length(),
shred.getRange().getEndOffset() - shred.getSuffix().length());
final TextRange rangeInsideHost = shred.getRangeInsideHost();
PsiLanguageInjectionHost host = shred.getHost();
RangeMarker origMarker =
myOrigDocument.createRangeMarker(
rangeInsideHost.shiftRight(host.getTextRange().getStartOffset()));
SmartPsiElementPointer<PsiLanguageInjectionHost> elementPointer =
smartPointerManager.createSmartPsiElementPointer(host);
Trinity<RangeMarker, RangeMarker, SmartPsiElementPointer> markers =
Trinity.<RangeMarker, RangeMarker, SmartPsiElementPointer>create(
origMarker, rangeMarker, elementPointer);
myMarkers.add(markers);
origMarker.setGreedyToRight(true);
rangeMarker.setGreedyToRight(true);
if (origMarker.getStartOffset() > curOffset) {
origMarker.setGreedyToLeft(true);
rangeMarker.setGreedyToLeft(true);
}
curOffset = origMarker.getEndOffset();
}
initGuardedBlocks(shreds);
}
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, "");
}
}
/**
* intersection may spread over several injected fragments
*
* @param rangeToEdit range in encoded(raw) PSI
* @return list of ranges in encoded (raw) PSI
*/
@Override
@SuppressWarnings({"ConstantConditions", "unchecked"})
@NotNull
public List<TextRange> intersectWithAllEditableFragments(
@NotNull PsiFile injectedPsi, @NotNull TextRange rangeToEdit) {
Place shreds = InjectedLanguageUtil.getShreds(injectedPsi);
if (shreds == null) return Collections.emptyList();
Object result = null; // optimization: TextRange or ArrayList
int count = 0;
int offset = 0;
for (PsiLanguageInjectionHost.Shred shred : shreds) {
TextRange encodedRange =
TextRange.from(
offset + shred.getPrefix().length(), shred.getRangeInsideHost().getLength());
TextRange intersection = encodedRange.intersection(rangeToEdit);
if (intersection != null) {
count++;
if (count == 1) {
result = intersection;
} else if (count == 2) {
TextRange range = (TextRange) result;
if (range.isEmpty()) {
result = intersection;
count = 1;
} else if (intersection.isEmpty()) {
count = 1;
} else {
List<TextRange> list = new ArrayList<TextRange>();
list.add(range);
list.add(intersection);
result = list;
}
} else if (intersection.isEmpty()) {
count--;
} else {
((List<TextRange>) result).add(intersection);
}
}
offset +=
shred.getPrefix().length()
+ shred.getRangeInsideHost().getLength()
+ shred.getSuffix().length();
}
return count == 0
? Collections.<TextRange>emptyList()
: count == 1 ? Collections.singletonList((TextRange) result) : (List<TextRange>) result;
}