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load document LineSet lazily

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This commit is contained in:
peter
2014-02-27 22:06:42 +01:00
parent 13e43be065
commit 22985e212f
1 changed files with 44 additions and 20 deletions
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platform/core-impl/src/com/intellij/openapi/editor/impl/DocumentImpl.java
+44 -20
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@@ -59,7 +59,8 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
private final List<RangeMarker> myGuardedBlocks = new ArrayList<RangeMarker>();
private ReadonlyFragmentModificationHandler myReadonlyFragmentModificationHandler;
private final LineSet myLineSet = new LineSet();
private final Object myLineSetLock = new String("line set lock");
private volatile LineSet myLineSet;
private volatile ImmutableText myText;
private volatile SoftReference<String> myTextString;
@@ -112,7 +113,6 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
public DocumentImpl(@NotNull CharSequence chars, boolean forUseInNonAWTThread) {
assertValidSeparators(chars);
myText = ImmutableText.valueOf(chars);
myLineSet.documentCreated(this);
setCyclicBufferSize(0);
setModificationStamp(LocalTimeCounter.currentTime());
myAssertThreading = !forUseInNonAWTThread;
@@ -127,6 +127,22 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
}
}
private LineSet getLineSet() {
LineSet lineSet = myLineSet;
if (lineSet == null) {
synchronized (myLineSetLock) {
lineSet = myLineSet;
if (lineSet == null) {
lineSet = new LineSet();
lineSet.documentCreated(this);
myLineSet = lineSet;
}
}
}
return lineSet;
}
@Override
@NotNull
public char[] getChars() {
@@ -159,11 +175,12 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
CharSequence text = myText;
RangeMarker caretMarker = caretOffset < 0 || caretOffset > getTextLength() ? null : createRangeMarker(caretOffset, caretOffset);
try {
for (int line = 0; line < myLineSet.getLineCount(); line++) {
if (inChangedLinesOnly && !myLineSet.isModified(line)) continue;
LineSet lineSet = getLineSet();
for (int line = 0; line < lineSet.getLineCount(); line++) {
if (inChangedLinesOnly && !lineSet.isModified(line)) continue;
int whiteSpaceStart = -1;
final int lineEnd = myLineSet.getLineEnd(line) - myLineSet.getSeparatorLength(line);
int lineStart = myLineSet.getLineStart(line);
final int lineEnd = lineSet.getLineEnd(line) - lineSet.getSeparatorLength(line);
int lineStart = lineSet.getLineStart(line);
for (int offset = lineEnd - 1; offset >= lineStart; offset--) {
char c = text.charAt(offset);
if (c != ' ' && c != '\t') {
@@ -228,12 +245,13 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
markers.add(marker);
}
}
LineSet lineSet = getLineSet();
lineLoop:
for (int line = 0; line < myLineSet.getLineCount(); line++) {
if (inChangedLinesOnly && !myLineSet.isModified(line)) continue;
for (int line = 0; line < lineSet.getLineCount(); line++) {
if (inChangedLinesOnly && !lineSet.isModified(line)) continue;
int whiteSpaceStart = -1;
final int lineEnd = myLineSet.getLineEnd(line) - myLineSet.getSeparatorLength(line);
int lineStart = myLineSet.getLineStart(line);
final int lineEnd = lineSet.getLineEnd(line) - lineSet.getSeparatorLength(line);
int lineStart = lineSet.getLineStart(line);
for (int offset = lineEnd - 1; offset >= lineStart; offset--) {
char c = text.charAt(offset);
if (c != ' ' && c != '\t') {
@@ -644,19 +662,20 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
@Override
public void clearLineModificationFlags() {
myLineSet.clearModificationFlags();
getLineSet().clearModificationFlags();
}
public void clearLineModificationFlagsExcept(@NotNull List<Integer> caretLines) {
List<Integer> modifiedLines = new ArrayList<Integer>(caretLines.size());
LineSet lineSet = getLineSet();
for (Integer line : caretLines) {
if (line != null && line >= 0 && line < myLineSet.getLineCount() && myLineSet.isModified(line)) {
if (line != null && line >= 0 && line < lineSet.getLineCount() && lineSet.isModified(line)) {
modifiedLines.add(line);
}
}
clearLineModificationFlags();
for (Integer line : modifiedLines) {
myLineSet.setModified(line);
lineSet.setModified(line);
}
}
@@ -725,7 +744,12 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
try {
if (LOG.isDebugEnabled()) LOG.debug(event.toString());
myLineSet.changedUpdate(event);
synchronized (myLineSetLock) {
LineSet lineSet = myLineSet;
if (lineSet != null) {
lineSet.changedUpdate(event);
}
}
setModificationStamp(newModificationStamp);
if (!ShutDownTracker.isShutdownHookRunning()) {
@@ -847,39 +871,39 @@ public class DocumentImpl extends UserDataHolderBase implements DocumentEx {
@Override
public int getLineNumber(final int offset) {
return myLineSet.findLineIndex(offset);
return getLineSet().findLineIndex(offset);
}
@Override
@NotNull
public LineIterator createLineIterator() {
return myLineSet.createIterator();
return getLineSet().createIterator();
}
@Override
public final int getLineStartOffset(final int line) {
if (line == 0) return 0; // otherwise it crashed for zero-length document
return myLineSet.getLineStart(line);
return getLineSet().getLineStart(line);
}
@Override
public final int getLineEndOffset(int line) {
if (getTextLength() == 0 && line == 0) return 0;
int result = myLineSet.getLineEnd(line) - getLineSeparatorLength(line);
int result = getLineSet().getLineEnd(line) - getLineSeparatorLength(line);
assert result >= 0;
return result;
}
@Override
public final int getLineSeparatorLength(int line) {
int separatorLength = myLineSet.getSeparatorLength(line);
int separatorLength = getLineSet().getSeparatorLength(line);
assert separatorLength >= 0;
return separatorLength;
}
@Override
public final int getLineCount() {
int lineCount = myLineSet.getLineCount();
int lineCount = getLineSet().getLineCount();
assert lineCount >= 0;
return lineCount;
}