protected ParseRequest<TState> adjustParseSpan(OffsetRegion span) {
int start = span.getStart();
int end = span.getEnd();
if (firstDirtyLine != null) {
int firstDirtyLineOffset =
snapshot.findLineFromLineNumber(firstDirtyLine).getStart().getOffset();
start = Math.min(start, firstDirtyLineOffset);
}
TState state = null;
int startLine = snapshot.findLineNumber(start);
while (startLine > 0) {
TState lineState = lineStates.get(startLine - 1);
if (!lineState.getIsMultiLineToken()) {
state = lineState;
break;
}
startLine--;
}
if (startLine == 0) {
state = getStartState();
}
start = snapshot.findLineFromLineNumber(startLine).getStart().getOffset();
int length = end - start;
ParseRequest<TState> request = new ParseRequest<>(new OffsetRegion(start, length), state);
return request;
}
protected void setLineState(int line, TState state) {
synchronized (lock) {
lineStates.set(line, state);
if (!state.getIsDirty() && firstDirtyLine != null && firstDirtyLine.equals(line)) {
firstDirtyLine++;
}
if (!state.getIsDirty() && lastDirtyLine != null && lastDirtyLine.equals(line)) {
firstDirtyLine = null;
lastDirtyLine = null;
}
}
}
protected AbstractTokensTaskTaggerSnapshot(
@NonNull AbstractTokensTaskTaggerSnapshot<TState> reference,
@NonNull DocumentSnapshot snapshot) {
Parameters.notNull("reference", reference);
Parameters.notNull("snapshot", snapshot);
if (!snapshot.getVersionedDocument().equals(reference.snapshot.getVersionedDocument())) {
throw new IllegalArgumentException("The target snapshot is not from the same document.");
}
if (snapshot.getVersion().getVersionNumber()
<= reference.snapshot.getVersion().getVersionNumber()) {
throw new UnsupportedOperationException(
"The target snapshot must be a future version of the reference document.");
}
this.snapshot = snapshot;
this.lineStates.addAll(reference.lineStates);
this.firstDirtyLine = reference.firstDirtyLine;
this.lastDirtyLine = reference.lastDirtyLine;
Integer firstChangedLine = null;
Integer lastChangedLine = null;
for (DocumentVersion version = reference.snapshot.getVersion();
version != null && version.getVersionNumber() < snapshot.getVersion().getVersionNumber();
version = version.getNext()) {
DocumentSnapshot source = version.getSnapshot();
DocumentVersion targetVersion = version.getNext();
assert targetVersion != null;
DocumentSnapshot target = targetVersion.getSnapshot();
NormalizedDocumentChangeCollection changes = version.getChanges();
assert changes != null;
for (int i = changes.size() - 1; i >= 0; i--) {
DocumentChange change = changes.get(i);
int lineCountDelta = change.getLineCountDelta();
int oldOffset = change.getOldOffset();
int oldLength = change.getOldLength();
int newOffset = change.getNewOffset();
int newLength = change.getNewLength();
/* processChange */
int oldStartLine = source.findLineNumber(oldOffset);
int oldEndLine =
oldLength == 0 ? oldStartLine : source.findLineNumber(oldOffset + oldLength - 1);
if (lineCountDelta < 0) {
lineStates.subList(oldStartLine, oldStartLine + Math.abs(lineCountDelta)).clear();
} else if (lineCountDelta > 0) {
TState endLineState = lineStates.get(oldStartLine);
ArrayList<TState> insertedElements = new ArrayList<>();
for (int j = 0; j < lineCountDelta; j++) {
insertedElements.add(endLineState);
}
lineStates.addAll(oldStartLine, insertedElements);
}
if (lastDirtyLine != null && lastDirtyLine > oldStartLine) {
lastDirtyLine += lineCountDelta;
}
if (lastChangedLine != null && lastChangedLine > oldStartLine) {
lastChangedLine += lineCountDelta;
}
for (int j = oldStartLine; j <= oldEndLine + lineCountDelta; j++) {
TState state = lineStates.get(i);
lineStates.set(j, state.createDirtyState());
}
firstChangedLine =
firstChangedLine != null ? Math.min(firstChangedLine, oldStartLine) : oldStartLine;
lastChangedLine =
lastChangedLine != null ? Math.max(lastChangedLine, oldEndLine) : oldEndLine;
/* processAfterChange */
if (firstChangedLine != null && lastChangedLine != null) {
int startLine = firstChangedLine;
int endLineInclusive = Math.min(lastChangedLine, source.getLineCount() - 1);
firstChangedLine = null;
lastChangedLine = null;
/* forceRehighlightLines(startRehighlightLine, endRehighlightLine); */
firstDirtyLine = firstDirtyLine != null ? Math.min(firstDirtyLine, startLine) : startLine;
lastDirtyLine =
lastDirtyLine != null ? Math.max(lastDirtyLine, endLineInclusive) : endLineInclusive;
// int start =
// currentSnapshot.findLineFromLineNumber(startLine).getStart().getOffset();
// int end = (endLineInclusive == lineStates.size() - 1) ?
// currentSnapshot.length() : currentSnapshot.findLineFromLineNumber(endLineInclusive +
// 1).getStart().getOffset();
// if (FIX_HIGHLIGHTER_UPDATE_BUG) {
// fireHighlightsChange(start, document.getLength());
// } else {
// fireHighlightsChange(start, end);
// }
}
}
}
firstDirtyLine = Math.min(firstDirtyLine, snapshot.getLineCount() - 1);
lastDirtyLine = Math.min(lastDirtyLine, snapshot.getLineCount() - 1);
}
