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correctly store reference

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This commit is contained in:
Alexey Kudravtsev
2012-03-15 09:39:23 +04:00
parent 4ff3a83df5
commit d2cd1c33a1
1 changed files with 13 additions and 6 deletions
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java/java-impl/src/com/intellij/codeInsight/daemon/impl/RefCountHolder.java
+13 -6
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@@ -19,7 +19,6 @@ import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.TextRange;
import com.intellij.openapi.util.UserDataHolderEx;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.*;
import com.intellij.psi.util.PsiMatcherImpl;
import com.intellij.psi.util.PsiMatchers;
@@ -56,20 +55,28 @@ public class RefCountHolder {
}
private static final Key<Reference<RefCountHolder>> REF_COUNT_HOLDER_IN_FILE_KEY = Key.create("REF_COUNT_HOLDER_IN_FILE_KEY");
public static RefCountHolder getInstance(PsiFile file) {
@NotNull
public static RefCountHolder getInstance(@NotNull PsiFile file) {
Reference<RefCountHolder> ref = file.getUserData(REF_COUNT_HOLDER_IN_FILE_KEY);
RefCountHolder holder = ref == null ? null : ref.get();
while (holder == null) {
if (holder == null) {
holder = new RefCountHolder(file);
ref = ((UserDataHolderEx)file).putUserDataIfAbsent(REF_COUNT_HOLDER_IN_FILE_KEY, new SoftReference<RefCountHolder>(holder));
holder = ref.get();
while (true) {
boolean replaced = ((UserDataHolderEx)file).replace(REF_COUNT_HOLDER_IN_FILE_KEY, ref, new SoftReference<RefCountHolder>(holder));
if (replaced) break;
ref = file.getUserData(REF_COUNT_HOLDER_IN_FILE_KEY);
RefCountHolder newHolder = ref == null ? null : ref.get();
if (newHolder != null) {
holder = newHolder;
break;
}
}
}
return holder;
}
private RefCountHolder(@NotNull PsiFile file) {
myFile = file;
LOG.debug("RefCountHolder created for '"+ StringUtil.first(file.getText(), 30, true));
}
private void clear() {